Characteristics of the work. Assembly and regulation complex nodes and engine mechanisms and units that require adjustment and fit according to 6 - 9 qualifications, their fastening. Dismantling of complex engine components and assemblies having connections of 6 - 7 qualifications. Pressing of engine parts and units into hydraulic and screw presses. Participation in hydraulic testing of assembled components and mechanisms on special installations. Static balancing of individual engine parts. Elimination of identified defects during assembly and after engine testing. Branding, silencing, sealing of complex engine parts and components various stages technological process.
Must know: rules for regulating systems of engine components and assemblies; technical requirements requirements for the quality of parts and assemblies supplied for assembly; basic information about engine operation; rules for the use of preservatives and lubricants, metal-ceramic, graphite, talc and rubber products on the engine; design of stands for pumping engine and engine components; design of assembly and disassembly stands for disassembling engine components and rules for their use; design and operating principle of piston and gas turbine engines; tolerances and landings; design changes to parts and assemblies of engines and assemblies by series.
Work examples
1. The devices are zero, the guides are pre-assembled.
2. Crankshafts - assembly, static balancing.
3. Gas collectors with nozzle devices, diffusers, adjustable nozzles - assembly.
4. Products and components - pumping with hot oil.
5. Combustion chambers - disassembly.
6. Carburetors, ignition manifolds - assembly.
7. Piston kits, exhaust manifolds, magneto - installation on the engine.
8. Compressors, turbines, gearbox housings, turbostarter gearboxes - complete disassembly.
9. Compressors, turbines - measuring gaps during disassembly.
10. Drive boxes, gas turbine engine units - assembly.
11. Impellers, intakes centrifugal compressors- static balancing.
12. Rear and middle engine mounts - pumping with hot oil.
13. Turbine rotors, compressor rotors - hydrotests.
14. Levers, rod housings, piston engine rods - assembly.
15. Front-line devices - assembly.
16. Fuel filters, starting and operating injectors - assembly and testing.
§ 141. Mechanic for assembling metal structures, 4th category
Characteristics of the work.
Assembly of complex components of metal structures for welding and riveting according to drawings and assembly diagrams using universal devices, as well as assembly of complex components of metal structures using universal assembly and special devices and templates. Marking places for installation of complex basic parts and assemblies of metal structures. Editing complex and complex parts and assemblies of metal structures. Cleaning for gumming welds manual pneumatic grinder. Participation in the assembly of experimental and unique components of metal structures under the guidance of a mechanic more than highly qualified. Hydraulic and pneumatic test complex components of metal structures operating under pressure. Elimination of defects discovered after testing complex components of metal structures. Drawing up sketches and assembly diagrams. Assembly, lifting and installation with temporary distribution of metal structural elements in various positions at various heights.What you should know:
- technical specifications for the assembly of complex metal structures
- system of admissions and landings
- qualities and roughness parameters
- influence of heating metals (during welding) on their deformation
- symbols welds
- methods for reconciling complex steel structures
- installation rules and device lifting mechanisms and accessories
- methods for straightening complex metal structures in devices using templates and according to drawings
- device and rules for setting up manual pneumatic machines.
Work examples
- A-shaped trusses for excavators - assembly of individual units.
- Cylindrical tanks and other vessels operating under pressure over 15 to 30 MPa (150 to 300 kgf/sq. cm) - assembly and hydrotesting.
- Tanks of T-bar, box-shaped and lattice sections for load-bearing metal structures - assembly.
- Mixer bands - assembly.
- Mixing drums with internal spirals - assembly.
- Cell shafts of disk vacuum filters made of high-alloy steel - assembly.
- Auger screws - assembly.
- Drilling derricks - assembly individual parts metal structures.
- Gas tanks, air collectors and water separators - assembly.
- Gas pipelines - assembly.
- Turbine casing frames - assembly.
- Frames and casings of industrial ovens and dryers - assembly.
- Protective casings - assembly, installation.
- Pipeline load-bearing bridge structures - assembly.
- Conductors, copiers for farms - assembly.
- Evaporator and condenser housings are assembled with spherical bottoms and fittings for welding.
- Cranes with a lifting capacity of up to 100 tons - assembly of structures and individual components.
- Monorails - assembly.
- Lattice supports - assembly.
- Welded dimensional tanks - assembly.
- Ties and spacers - assembly.
- Sections of nozzles of drying drums - assembly.
- Crossbars - assembled for welding.
- Half-timbering - assembly of purlins and elements.
- Refrigerators and inclined machines of blast furnaces - manufacturing and assembly.
- Cabinets and drawers (waterproof) - assembly.
- Electric blowers and turbo blowers - assembly.
- Elements of radio towers, power line supports - assembly.
- Elevators, smoke exhausters, exhausters - assembly.
Unified Tariff and Qualification Directory of Works and Professions of Workers (UTKS), 2019
Part No. 2 of Issue No. 2 of ETKS
The issue was approved by Resolution of the Ministry of Labor of the Russian Federation dated November 15, 1999 N 45
(as amended by Order of the Ministry of Health and Social Development of the Russian Federation dated November 13, 2008 N 645)
Metalwork assembly mechanic
§ 139. Mechanic for assembling metal structures, 2nd category
Characteristics of work. Manual chopping and cutting of wire, sheet and long metal blanks. Filing and deburring. Participation, under the guidance of a more highly qualified mechanic, in performing certain simple and medium-complexity works and operations for assembling metal structures and testing them. Manufacturing simple details from varietal and sheet metal. Marking parts using simple templates. Drilling and cutting threads manually using taps and dies. Alignment of racks for assembly. Installation of bolts and studs into compatible holes in metal structures. Assembly of simple components of metal structures for welding and riveting according to drawings and sketches using universal assembly and special devices. Tack welding of parts during assembly using electric welding. Drilling, reaming and reaming holes of small parts according to markings on a machine and portable power tools. Editing parts and assemblies of metal structures.
Must know: name and purpose of plumbing and measuring tools and devices and their use; refueling methods metalworking tools; techniques for performing simple and medium-complexity metalwork operations and the process of assembling simple and medium-complexity metal structures; design and operating rules for lifting and transport devices, working and control instruments and devices; technological process, methods and techniques for assembling, adjusting, checking and straightening metal structures; system of admissions and landings; properties, brands and range of materials and pipes used; methods of connecting parts for welding; rules and types of marking of assembled units.
Work examples
1. Cylindrical tanks and vessels operating under pressure up to 5 MPa (60 kgf/sq. cm) - assembly and hydraulic testing.
2. Parts made of sheet and strip steel - marking according to a template, editing.
3. Sheet steel parts - bending.
4. Parts made of high-quality steel of all profiles with a thickness of up to and over 6 mm - cutting, chopping
5. Various parts - filing of free sizes, cutting at angles, drilling according to markings.
6. Small-sized casings - assembly.
7. Caps, lids, brushes, vessels, funnels, boxes, cabinets of all sizes - preparation, straightening and assembly of parts for welding.
8. Sheet and profile metal - drilling, cutting with guillotine and press shears, joining for welding.
9. Strip and twisted metal - bending and cleaning after gas cutting.
10. Butt plates, stiffeners, temporary bolts - installation.
11. Supports and frames for devices - assembly.
12. Gaskets of simple and complex configurations made of sheet steel, cardboard, asbestos, clinoherite, rubber - manual cutting and cutting according to markings.
13. Material staples different sections- flexible in adaptation.
14. Welded racks - assembly for welding.
15. Belt conveyors - assembly of metal structures.
16. Fittings made of pipes with flanges - assembly.
17. Metal cabinets and shelves - assembly.
§ 140. Mechanic for assembling metal structures, 3rd category
Characteristics of work. Assembly of metal structure assemblies of medium complexity for welding and riveting according to drawings and sketches using universal devices, as well as assembly of complex metal structure assemblies using universal assembly and special devices and templates. Adjustment of sealing surfaces. Marking locations for installation of simple basic parts and assemblies of metal structures. Assembly of complex metal structures together with a mechanic and electric welder of a higher qualification. Editing parts and assemblies of metal structures of medium complexity. Hydraulic and pneumatic tests of metal structures of medium complexity operating under pressure.
Must know: methods for marking locations for installation of basic parts and assemblies of metal structures; structural device devices used during assembly; methods of sharpening metalwork tools; state standards for materials used; system of tolerances, fits and their designation on drawings; requirements for the work performed; rules for working with a gas cutter and electric welding machine; sequence and methods of assembly on assembly racks and on conductors-copiers; assortment and grades of steel.
Work examples
1. Devices low pressure with detachable connections - assembly.
2. Oil tanks - manufacturing and assembly.
3. Cylindrical tanks and other vessels operating under pressure above 5 to 15 MPa (50 to 150 kgf/sq. cm) - assembly and hydraulic testing.
4. I-beams for monorails - assembly.
5. Baths of rolling equipment and oil gearboxes, pouring ladles of various capacities - assembly for welding.
6. Insulation of collectors - production and assembly of parts.
7. Plate and overhead conveyors - assembly of metal structures.
8. Door and window frames and metal doors with a rigid frame - assembly.
9. Counterweight housings - assembled for welding.
10. Stairs, platforms, purlins, bunker walls, decking, metal railings made of pipes and tees, brake sheets, fences, sliding supports, gratings - assembly.
11. Cylindrical and conical shells made of sheet metal - bending.
12. Settling tanks, measuring tanks, collection tanks - assembly.
13. Foundation slabs - assembly.
14. Louvre grilles, decking for openings, rod racks for fastening conductors, conductors for anchor bolts- assembly.
15. I-section rods - assembly of metal structures.
16. Trusses - assembly according to the copier.
§ 141. Mechanic for assembling metal structures, 4th category
Characteristics of work. Assembly of complex components of metal structures for welding and riveting according to drawings and assembly diagrams using universal devices, as well as assembly of complex components of metal structures using universal assembly and special devices and templates. Marking locations for installation of complex basic parts and assemblies of metal structures. Editing complex and complex parts and assemblies of metal structures. Cleaning welded seams for gumming using a manual pneumatic grinder. Participation in the assembly of experimental and unique components of metal structures under the guidance of a more highly qualified mechanic. Hydraulic and pneumatic testing of complex metal structures operating under pressure. Elimination of defects discovered after testing complex components of metal structures. Drawing up sketches and assembly diagrams. Assembly, lifting and installation with temporary distribution of metal structural elements in various positions at various heights.
Must know: technical specifications for the assembly of complex metal structures; system of admissions and landings; qualities and roughness parameters; the effect of heating metals (during welding) on their deformation; symbols of welds; methods of alignment of complex steel structures; installation rules and arrangement of lifting mechanisms and devices; methods for straightening complex metal structures in devices using templates and according to drawings; device and rules for setting up manual pneumatic machines.
Work examples
1. A-shaped trusses for excavators - assembly of individual units.
2. Cylindrical tanks and other vessels operating under pressure above 15 to 30 MPa (150 to 300 kgf/sq. cm) - assembly and hydrotesting.
3. T-section, box-shaped and lattice-section tanks for load-bearing metal structures - assembly.
4. Mixer bands - assembly.
5. Mixing drums with internal spirals - assembly.
6. Cell shafts of disk vacuum filters made of high-alloy steel - assembly.
7. Auger screws - assembly.
8. Drilling derricks - assembly of individual parts of metal structures.
9. Gas tanks, air collectors and water separators - assembly.
10. Gas pipelines - assembly.
11. Turbine casing frames - assembly.
12. Frames and casings of industrial ovens and dryers - assembly.
13. Protective casings - assembly, installation.
14. Structures of load-bearing pipeline bridges - assembly.
15. Conductors, copiers for farms - assembly.
16. Evaporator and condenser housings - assembly with spherical bottoms and fittings for welding.
17. Cranes with a lifting capacity of up to 100 tons - assembly of structures and individual components.
18. Monorails - assembly.
19. Lattice supports - assembly.
20. Welded dimensional tanks - assembly.
21. Ties and spacers - assembly.
22. Sections of drying drum nozzles - assembly.
23. Crossbars - assembly for welding.
24. Half-timbers - assembly of purlins and elements.
25. Refrigerators and inclined machines of blast furnaces - manufacturing and assembly.
26. Cabinets and drawers (waterproof) - assembly.
27. Electric blowers and turbo blowers - assembly.
28. Elements of radio towers, power line supports - assembly.
29. Elevators, smoke exhausters, exhausters - assembly.
§ 142. Mechanic for assembling metal structures, 5th category
Characteristics of work. Assembly of complex components of metal structures for welding and riveting according to drawings and assembly diagrams using universal and special devices and templates. Marking locations for installation of complex basic parts and assemblies of metal structures. Leveling and alignment of assembled metal structures. Construction of simple geometric shapes according to assembly diagrams and sketches. Assembly of experimental and unique components of metal structures. Hydraulic and pneumatic testing of complex metal structures operating under pressure. Elimination of defects discovered after testing complex components of metal structures.
Must know: purpose of various kinds of complex metal structures; operating conditions of lifting and transport devices, methods for determining their reliability; mechanical properties base metals; permissible tensile, bending, compression forces; mechanical characteristics lifting mechanisms used; techniques for performing rigging and welding work; the procedure for organizing work on the assembly of complex metal structures; methods for marking complex developments.
Work examples
1. Excavator base - assembly.
2. Water tanks, gas and air ducts, bunkers and chimneys - assembly.
3. Cylindrical tanks and other vessels operating under pressure over 30 MPa (300 kgf/sq. cm) - assembly and hydrotesting.
4. Main and end beams of overhead cranes - assembly.
5. Drums: coal grinding, ore grinding mills, mining machines - assembly.
6. Towers and scoop dredger frames - manufacturing of parts.
7. Car dumpers - assembly.
8. Sluice gates - assembly.
9. Thin-walled telescopic casings made of special steel - assembly.
10. Metal structures (trusses, columns, rafters, blocks, casings) - assembly, inspection of all structures.
11. Bridge structures - assembly.
12. Building structures - control and enlarged assembly, verification.
13. Containers with a carrying capacity of over 0.5 tons and organizational equipment with mechanical, telescopic and other drives for moving or lifting loads - manufacturing, assembly, adjustment and testing.
14. Mine pile drivers - manufacturing of parts.
15. Housings of heat exchangers - assembly.
16. Housings of cement, metallurgical and other furnaces of complex structures - checking the complete assembly.
17. Electrostatic precipitator housings - assembly.
18. Cranes with a lifting capacity of over 100 tons - assembly of structures and individual components.
19. Rotation mechanisms for excavators, loaders, portal cranes - control assembly.
20. Nozzle for dryers - installation in the housing.
21. Samples of simulators intended for training workers (crane operators and elevator operators) - manufacturing, assembly, adjustment and testing.
22. Technological equipment intended for the manufacture, assembly and testing of prototypes - manufacturing.
23. Furnaces for heat treatment- production of parts and installation.
24. Open hearth furnaces - assembly of metal structures.
25. Plates of automatic filter presses - assembly.
26. High pressure heaters - assembly.
27. Reactors, autoclaves, multi-chamber tunnel dryers - assembly.
28. Tanks under high pressure- assembly.
29. Elevator body sections - assembly.
30. Projectiles and dredging installations with a capacity of up to 300 cubic meters. m/h - assembly.
31. Complex shelving, chairs and armchairs with movement in three planes - manufacturing, assembly, testing.
32. A-shaped excavator trusses - general assembly.
33. Automatic filter presses - general installation.
34. Tanks - assembly.
35. Walking excavators high power- assembly.
§ 143. Mechanic for assembling metal structures, 6th category
Characteristics of work. Assembly, adjustment, testing and delivery in accordance with technical specifications of complex metal structures, as well as experimental and unique components of metal structures that require increased accuracy of assembly work. Construction of complex geometric shapes using assembly diagrams and sketches. Participation in the preparation of a passport for the assembled components of metal structures. Hydraulic and pneumatic testing of experimental and unique components of metal structures operating under pressure. Checking the correct assembly of metal structures of varying complexity, taking operational diagrams and characteristics.
Must know: fundamentals of heat engineering, mechanics, geometry and trigonometry; principle of operation and rules of operation of complex metal structures; equipment, complex tools, devices and various instruments used in the assembly of metal structures; sequence of assembly of metal structures; requirements for the assembly of structures and products subject to special tests; technology and technical conditions for the assembly of metal structures.
Work examples
1. Autoclaves, recuperators, muffle-free, tempering and hardening units - production of components and installation.
2. Heat exchangers complex design- production of pipe systems, general assembly, installation and testing.
3. Casings of blast furnaces, domes of air heaters, inclined bridges of blast furnaces - control and enlarged assembly.
4. Heavy power line supports - control and enlarged assembly.
5. Supports for tubular structures (television towers, radio towers) - assembly.
6. Projectiles and dredging installations with a capacity of over 300 cubic meters. m/h - assembly.
7. Circular air ducts, tangent inlets, elliptical nozzles - assembly.
equipment and devices
4th category
Characteristics of the work. Assembly with mechanical adjustment of complex instruments, mechanisms and communications equipment, assemblies and blocks of radio-electronic equipment, radio devices. Scraping of base surfaces and guide elements of structures, running in of various types of gears and worm gears, fine-tuning and fitting of complex parts within 7-10 grades. Marking slabs, bases for installing mechanisms, blocks and assemblies on them, ensuring rigid fixation and correct interaction of assembled products in accordance with the specifications. Trial assembled mechanisms, blocks and devices of equipment and instruments, eliminating inaccuracies in operation discovered during testing. Checking the mechanical part of assembled products using instrumentation and tools. Manufacturing of assembly devices.
Must know: the device, the operating principle of the equipment used in the work and how to set it up; purpose, design and principle of operation of the assembled equipment; rules for heat treatment of normal and special cutting tool; methods and methods of mechanical adjustment of assembled equipment; basic information about processing parameters; basics of electrical and radio engineering.
Work examples
1. Automatic brakes, consoles, electromagnets - assembly and mechanical adjustment.
2. Telescopic antennas - assembly with adjustment.
3. Semiconductor equipment - assembly of complex components.
4. Phototelegraph devices - assembly, debugging and adjustment.
5. Blocks and subblocks of long-distance communication equipment for high-frequency telephony - assembly.
6. Measurement blocks - assembly.
7. Power supplies with high saturation of incoming nodes and ERE assembly.
8. High-voltage rectifiers, amplifiers, dividers, modulators, ferrovaliometers - assembly.
9. Generators, oscilloscopes - assembly with alignment and fitting of parts.
10. Contact groups, consisting of several contact plates, assembly with forced pressure testing.
11. Code discs - wipe after filling.
12. Products for "Video equipment" - assembly.
13. Decade-step finders - complete assembly, fitting and testing.
14. Power supplies stabilized on semiconductors - assembly of complex components.
15. Flat cables - laying, connecting, checking connections in racks and frames of computer devices.
16. Cabin assembly with markings, drilling holes, cutting threads and fitting parts.
17. Command buttons - head assembly and adjustment.
18. Caps, casings and fiberglass - pressing and unpressing, checking for leaks.
19. Magnetic cores - calibration, lapping of prototypes.
20. Register-assembly mechanisms.
21. Microswitches of all-climate design for special radio-electronic equipment with a given switching speed on a plastic base; "Toggle switches" of all-climate design for special electronic equipment - complete assembly and adjustment with checking of electrical parameters.
22. Clutches of different types - assembly and adjustment.
23. Transmitters-assembly.
24. Push-button switches of all-climate design for printed circuit mounting with light signaling for special radio-electronic equipment on a plastic base - assembly with testing of electrical parameters.
25. PCB type switches - installation of shunts and rings.
26. Voltage converters - assembly.
27. Radio receivers - assembly and installation of complex blocks and mechanisms on one axis (adjusting the antenna and scale with gearboxes).
28. Radio stations - complex assembly of blocks and assemblies.
29. Gearboxes of medium complexity - assembly, adjustment.
30. Sealed relays (complex and particularly complex) - assembly with fitting and finishing of parts.
31. Waveguide sections (complex) - manufacturing.
32. Ventilation systems, antennas, air conditioners, air ducts, lighting - assembly and installation in the body.
33. Special equipment - assembly with installation of components.
34. Stands for assembling experimental samples with fitting of parts and assemblies.
35. Operator desks - preliminary and final assembly.
36. Televisions - elimination of mechanical assembly defects with the replacement of individual components and parts.
37. Transformers: high-voltage, high-potential, all-climate design - assembly.
38. Transformers: power, output, toroidal, frame, sound - assembly in small-scale production.
39. Transformers and blocks pulse transformers for hybrid film circuits; high-frequency transformers for printed circuit circuits, pulse microtransformers; especially stable transformers and chokes-assembly.
40. Gears, bushings, mounting rings - pinning on rollers with conical pins with preliminary drilling and reaming of holes for the pins.
2nd category
Characteristics of the work. Manual chopping and cutting of wire, sheet and long metal blanks. Filing and deburring. Participation, under the guidance of a more highly qualified mechanic, in performing certain simple and medium-complexity works and operations for assembling metal structures and testing them. Manufacturing of simple parts from section and sheet metal. Marking parts using simple templates. Drilling and cutting threads manually using taps and dies. Alignment of racks for assembly. Installation of bolts and studs into compatible holes in metal structures. Assembly of simple components of metal structures for welding and riveting according to drawings and sketches using universal assembly and special devices. Tack welding of parts during assembly using electric welding. Drilling, reaming and reaming holes of small parts according to markings on a machine and portable power tools. Editing parts and assemblies of metal structures.
Must know: name and purpose of plumbing and measuring tools and devices and their use; methods for refilling plumbing tools; techniques for performing simple and medium-complexity metalwork operations and the process of assembling simple and medium-complexity metal structures; design and operating rules for lifting and transport devices, working and control instruments and devices; technological process, methods and techniques for assembling, fitting, checking and straightening metal structures; system of admissions and landings; properties, brands and range of materials and pipes used; methods of connecting parts for welding; rules and types of marking of assembled units.
Work examples
- Cylindrical tanks and vessels operating under pressure up to 5 MPa (60 kgf/sq.cm) - assembly and hydraulic testing.
- Parts made of sheet and strip steel - marking according to a template, editing.
- Sheet steel parts - bending.
- Parts made of high-quality steel of all profiles with a thickness of up to and over 6 mm - cutting, chopping.
- Various parts - filing of free sizes, cutting at angles, drilling according to markings.
- Small-sized casings - assembly.
- Caps, lids, brushes, vessels, funnels, boxes, cabinets of all sizes - preparation, straightening and assembly of parts for welding.
- Sheet and profile metal - drilling, cutting with guillotine and press shears, joining for welding.
- Strip and twisted metal - bending and cleaning after gas cutting.
- Butt plates, stiffeners, temporary bolts - installation.
- Supports and frames for devices - assembly.
- Gaskets of simple and complex configurations made of sheet steel, cardboard, asbestos, clinoherite, rubber - cutting and cutting according to markings manually.
- Staples made of material of different sections - flexible in the device.
- Welded racks - assembled for welding.
- Belt conveyors - assembly of metal structures.
- Pipe fittings with flanges - assembly.
- Metal cabinets and shelves - assembly.
3rd category
Characteristics of the work. Assembly of metal structure assemblies of medium complexity for welding and riveting according to drawings and sketches using universal devices, as well as assembly of complex metal structure assemblies using universal assembly and special devices and templates. Adjustment of sealing surfaces.
Marking locations for installation of simple basic parts and assemblies of metal structures. Assembly of complex metal structures together with a mechanic and electric welder of a higher qualification. Editing parts and assemblies of metal structures of medium complexity. Hydraulic and pneumatic tests of metal structures of medium complexity operating under pressure.
Must know: methods for marking locations for installation of basic parts and assemblies of metal structures; structural design of devices used during assembly; methods of sharpening metalwork tools; state standards on the materials used; system of tolerances, fits and their designation on drawings; requirements for the work performed; rules for working with a gas cutter and electric welding machine; sequence and methods of assembly on assembly racks and on conductors-copiers; assortment and grades of steel.
Work examples
- Low pressure devices with detachable connections - assembly.
- Oil tanks - manufacturing and assembly.
- Cylindrical tanks and other vessels operating under pressure over 5 to 15 MPa (50 to 150 kgf/sq.cm.) - assembly and hydraulic testing.
- I-beams for monorails - assembly.
- Baths of rolling equipment and oil gearboxes, pouring ladles of various capacities - assembly for welding.
- Manifold insulation - manufacturing and assembly of parts.
- Plate and overhead conveyors - assembly of metal structures.
- Door and window frames and metal doors with a rigid frame - assembly.
- Counterweight housings are assembled for welding.
- Stairs, platforms, purlins, bunker walls, decking, metal railings made of pipes and tees, brake sheets, fences, sliding supports, gratings - assembly.
- Cylindrical and conical shells made of sheet metal - bending.
- Settling tanks, measuring tanks, collection tanks - assembly.
- Foundation slabs - assembly.
- Louvre grilles, decking for openings, rod racks for fastening conductors, conductors for anchor bolts - assembly.
- I-section rods - assembly of metal structures.
- Trusses - assembly according to the copier.
§141. Metalwork assembly mechanic
4th category
Characteristics of the work. Assembly of complex components of metal structures for welding and riveting according to drawings and assembly diagrams using universal devices, as well as assembly of complex components of metal structures using universal assembly and special devices and templates. Marking locations for installation of complex basic parts and assemblies of metal structures. Editing complex and complex parts and assemblies of metal structures. Cleaning welded seams for gumming using a manual pneumatic grinder. Participation in the assembly of experimental and unique components of metal structures under the guidance of a more highly qualified mechanic. Hydraulic and pneumatic testing of complex metal structures operating under pressure. Elimination of defects discovered after testing complex components of metal structures. Drawing up sketches and assembly diagrams. Assembly, lifting and installation with temporary distribution of metal structural elements in various positions at various heights.
Must know: technical specifications for the assembly of complex metal structures; system of admissions and landings; qualities and roughness parameters; the effect of heating metals (during welding) on their deformation; symbols of welds; methods of alignment of complex steel structures; installation rules and arrangement of lifting mechanisms and devices; methods for straightening complex metal structures in devices using templates and according to drawings; device and rules for setting up manual pneumatic machines.
Work examples
- A-shaped trusses for excavators - assembly of individual units.
- Cylindrical tanks and other vessels operating under pressure above 15 to 30 MPa (150 to 300 kgf/cm2) - assembly and hydrotesting.
- Tanks of T-bar, box-shaped and lattice sections for load-bearing metal structures - assembly.
- Mixer bands - assembly.
- Mixing drums with internal spirals - assembly.
- Cell shafts of disk vacuum filters made of high-alloy steel - assembly.
- Auger screws - assembly.
- Drilling derricks - assembly of individual parts of metal structures.
- Gas tanks, air collectors and water separators - assembly.
- Gas pipelines - assembly.
- Turbine casing frames - assembly.
- Frames and casings of industrial ovens and dryers - assembly.
- Protective casings - assembly, installation.
- Pipeline load-bearing bridge structures - assembly.
- Conductors, copiers for farms - assembly.
- Evaporator and condenser housings are assembled with spherical bottoms and fittings for welding.
- Cranes with a lifting capacity of up to 100 tons - assembly of structures and individual components.
- Monorails - assembly.
- Lattice supports - assembly.
- Welded dimensional tanks - assembly.
- Ties and spacers - assembly.
- Sections of nozzles of drying drums - assembly.
- Crossbars - assembled for welding.
- Half-timbering - assembly of purlins and elements.
- Refrigerators and inclined machines of blast furnaces - manufacturing and assembly.
- Cabinets and drawers (waterproof) - assembly.
- Electric blowers and turbo blowers - assembly.
- Elements of radio towers, power line supports - assembly.
- Elevators, smoke exhausters, exhausters - assembly.
§142. Metalwork assembly mechanic
5th category
Characteristics of the work. Assembly of complex components of metal structures for welding and riveting according to drawings and assembly diagrams using universal and special devices and templates. Marking locations for installation of complex basic parts and assemblies of metal structures. Leveling and alignment of assembled metal structures. Construction of simple geometric figures using assembly diagrams and sketches. Assembly of experimental and unique components of metal structures. Hydraulic and pneumatic testing of complex metal structures operating under pressure. Elimination of defects discovered after testing complex components of metal structures.
Must know: purpose of various kinds of complex metal structures; operating conditions of lifting and transport devices, methods for determining their reliability; mechanical properties of base metals; permissible tensile, bending, compression forces; mechanical characteristics of the lifting mechanisms used; techniques for performing rigging and welding work; the procedure for organizing work on the assembly of complex metal structures; methods for marking complex developments.
Work examples
- Excavator base - assembly.
- Water tanks, gas ducts, bunkers and chimneys- assembly.
- Cylindrical tanks and other vessels operating under pressure over 30 MPa (300 kgf/sq.cm) - assembly and hydrotesting.
- Main and end beams of overhead cranes - assembly.
- Drums: coal grinding, ore grinding mills, mining machines - assembly.
- Towers and frames for scoop dredgers - manufacturing of parts.
- Car dumpers - assembly.
- Sluice gates - assembly.
- Thin-walled telescopic casings made of special steel - assembly.
- Metal structures (trusses, columns, rafters, blocks, casings) - assembly, inspection of all structures.
- Bridge structures - assembly.
- Building structures - control and enlarged assembly, alignment.
- Containers with a carrying capacity of over 0.5 tons and organizational equipment with mechanical, telescopic and other drives for moving or lifting loads - manufacturing, assembly, adjustment and testing.
- Mine pile drivers - manufacturing of parts.
- Heat exchanger casings - assembly.
- Cases of cement, metallurgical and other kilns of complex structures - inspection of complete assembly.
- Electrostatic precipitator housings - assembly.
- Cranes with a lifting capacity of over 100 tons - assembly of structures and individual components.
- Rotation mechanisms for excavators, material handlers, portal cranes - control assembly.
- Dryer nozzle - installation in the housing.
- Samples of simulators intended for training workers (crane operators and elevator operators) - manufacturing, assembly, adjustment and testing.
- Technological equipment intended for the manufacture, assembly and testing of prototypes - manufacturing.
- Furnaces for heat treatment - production of parts and installation.
- Open hearth furnaces - assembly of metal structures.
- Automatic filter press plates - assembly.
- High pressure heaters - assembly.
- Reactors, autoclaves, multi-chamber tunnel dryers - assembly.
- High pressure tanks - assembly.
- Elevator body sections - assembly.
- Projectiles and dredging installations with a capacity of up to 300 cubic meters. m/h - assembly.
- Complex shelving, chairs and armchairs with movement in three planes - manufacturing, assembly, testing.
- A-shaped excavator trusses - general assembly.
- Automatic filter presses - general installation.
- Tanks - assembly.
- High power walking excavators - assembly.
6th category
Characteristics of the work. Assembly, adjustment, testing and delivery in accordance with technical specifications of complex metal structures, as well as experimental and unique components of metal structures that require increased accuracy of assembly work. Construction of complex geometric shapes using assembly diagrams and sketches. Participation in the preparation of a passport for the assembled components of metal structures. Hydraulic and pneumatic testing of experimental and unique components of metal structures operating under pressure. Checking the correct assembly of metal structures of varying complexity, taking operational diagrams and characteristics.
Must know: fundamentals of heat engineering, mechanics, geometry and trigonometry; principle of operation and rules of operation of complex metal structures; equipment, complex tools, devices and various instruments used in the assembly of metal structures; sequence of assembly of metal structures; requirements for the assembly of structures and products subject to special tests; technology and technical conditions for the assembly of metal structures.
Work examples
- Autoclaves, recuperators, muffleless, tempering and hardening units - production of components and installation.
- Heat exchangers of complex design - manufacturing of pipe systems, general assembly, installation and testing.
- Blast furnace casings, air heater domes, inclined bridges of blast furnaces - control and enlarged assembly.
- Heavy power transmission line supports - control and enlarged assembly.
- Supports for tubular structures (television towers, radio towers) - assembly.
- Projectiles and dredging installations with a capacity of over 300 cubic meters. m/h - assembly,
- Circular air ducts, tangent inlets, elliptical nozzles - assembly.