QB 1596-1992 Technical regulations on labor safety in sewing machine industry

This standard specifies the basic requirements for safety technology and industrial hygiene in the production process of sewing machine industrial enterprises. This standard applies to sewing machine manufacturers. QB 1596-1992 Technical Regulations for Labor Safety in Sewing Machine Industry QB1596-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Technical Regulations for Labor Safety in Sewing Machine Industry
1 Subject Content and Scope of Application
QB 1596--1992
This standard specifies the basic requirements for safety technology and industrial hygiene in the production process of sewing machine industrial enterprises. This standard applies to sewing machine manufacturers. 2 Reference standards
GB2893 Safety colors
GB2894
Safety signs
Fixed steel straight ladders
GB 4053. 1[
GB 4053. 2
Fixed steel inclined ladders
GB 4053.3
Fixed industrial protective railings
Fixed industrial steel platforms
GB 4053. 4[
GB4387
GB4674
GB5083
GB 6067
GB6514
GB6515
GB8176
GBJ 16
GBJ 54
Safety regulations for in-plant transportation in industrial enterprises
Safety regulations for grinding machinery
General principles for safety and sanitation design of production equipment
Safety regulations for lifting machinery
Safety regulations for painting operationsPainting process safetySafety regulations for painting operationsPainting processVentilation and purificationGeneral safety rules for press workshops
Code for fire protection of building design
Line design specifications for low-voltage power distribution devices
Design specifications for heating, ventilation and air conditioning in industrial enterprisesT J32
Industrial Enterprise Lighting Design Standard
Industrial Enterprise Lighting Design Standard
TJ36 Industrial Enterprise Design Hygiene Standard
Labor Guozi [1990] No. 8 Pressure Vessel Safety Technical Supervision Regulations 3 Factory Yard
3.1 The sidewalks and driveways of the factory yard should be flat and unobstructed. There must be obvious warning signs, signal devices or railings at the intersections. Pit and pool should have fences or covers and other safety measures. The buildings must be solid and safe, and the lighting facilities must be complete. 3.2 Factory Site SelectionbZxz.net
3.2.1 The new factory site should meet the requirements of labor safety and industrial hygiene, and be based on the principles of reliable geology, convenient transportation, conducive to the transportation of raw materials and products, production development, convenient life of employees, and no impact on environmental quality standards. 3.2.2 When selecting the site, the water for production, life, fire fighting, water source, sewage discharge location, waste residue dump, wastewater treatment station, etc. should be determined. 3.3 Factory Building
3.3.1 Factory building design shall comply with the relevant provisions of TJ36 and GBJ16, and shall be designed in combination with the characteristics of sewing machine industry production. Approved by the Ministry of Light Industry of the People's Republic of China on August 31, 1992, and implemented on April 1, 1993
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3.3.2 Architectural design shall ensure good natural lighting and ventilation indoors. 3.3.3 The building structure, factory building height, decoration materials and floor space of the production workshop shall meet the safety and health requirements while meeting the process requirements; anti-corrosion measures must be adopted for factories with corrosive operations. 3.3.4 Production workshop - generally, reasonable layout shall be made according to material flow, workshops closely related to production shall be arranged close to each other, and auxiliary rooms shall be arranged around the workshop.
3.3.5 High temperature workshops shall minimize sunlight exposure and be equipped with skylights with windproof facilities. Skylights and side windows shall be easy to open and close and clean. 3.3.6 Dust and toxic workshops should be arranged on the upper floors. For explosion-hazardous plants, the ratio of the pressure relief area to the plant volume should meet the requirements of GBJ16.
3.4 ​​Plant area
For pipelines crossing the aisle, the height of the trestle should not be less than 4m. The width of the fire passage in the plant area should not be less than 3.5m. 3.4.1
3.4.2 Pipelines along the factory roads should be as straight as possible, with fewer turns and intersections, and should also meet the following requirements: Flammable and combustible medium pipelines should be arranged above other pipelines; a.
Oxygen pipes should be lower than flammable and combustible pipes, and higher than other pipelines; b.
Heat pipes should be above cables, gas, water supply and drainage pipes; c.
Water pipes should be arranged above sewage pipes;
The distance between each pipeline and power line should meet the requirements of GBJ54; e.
Each pipeline should meet the requirements of GB2893.
3.4.3 Non-drinking water pipelines whose water quality does not meet the sanitary standards for drinking water shall not be connected to drinking water pipelines. 4 Labor safety
4.1 Workplace
4.1.1 Raw materials, semi-finished products and finished products should be stored in designated areas or in special containers, neatly and stably stacked, waste and scraps should be removed in time, and the passages should be kept unobstructed and clean.
4.1.2 The equipment layout should be reasonable, the passage width should not be less than 1m, the platform should be fenced, and the fence height should not be less than 1.05m. The lighting should meet the requirements of TJ33, and the lighting should meet the requirements of TJ34. 4.1.3 Ground surfaces that are often exposed to water, oil or other liquids should be equipped with drainage, anti-slip, anti-corrosion and anti-leakage facilities. 4.1.4 Workplaces and warehouses must be configured in separate rooms and equipped with effective fire-fighting equipment. 4.1.5 When there is no bare wire (body) protected by a fence in the workplace, the height from the ground shall not be less than 3.5m. When protected by a mesh or perforated fence, the height shall not be less than 2.5m. ：
4.2 Machinery and Equipment
4.2.1 Purchased or self-made production equipment must comply with the requirements of the corresponding safety standards of GB5083. 4.2.2 Equipment must be regularly inspected and repaired, and it is not allowed to operate with defects. It is not allowed to operate under over-temperature, over-pressure, and overload conditions. 4.2.3 The exposed transmission and dangerous parts of the machinery must be equipped with effective safety protection devices or insurance devices. 4.2.4 The inlet and outlet of production equipment should be automatic or semi-automatic as much as possible. 4.2.5 The housing of mechanical equipment must take effective protective zeroing or protective grounding measures according to the power supply method. 4.2.6 The power distribution device and line layout of mechanical equipment shall comply with the specifications of GBJ54. 4.2.7 The design, implementation, safe operation and maintenance of intra-factory transportation and vehicles shall comply with the requirements of GB4387. 4.2.8 The use, management and inspection of lifting machinery shall comply with the requirements of GB6067. 4.2.9 The equipment location, installation, equipment maintenance and safety management of key departments such as boilers, pressure vessels and other special equipment, substations, liquefied gas stations, acetylene and air compression stations shall comply with the relevant national standards. 4.2.10 The fixed steel straight ladders, inclined ladders, fixed maintenance steel platforms and their guardrails of mechanical equipment and facilities shall comply with the relevant provisions of GB4053.1, GB4053.2, GB4053.3 and GB4053.4. 99
5 Labor hygiene
5.1 Dust and toxic prevention
QB1596—1992
5.1.1 Dust and toxic operations should be combined with technical transformation, and new technologies, new processes, new equipment and new materials should be used as much as possible to eliminate or reduce the hazards of dust and toxicity. 5.1.2 Dust and toxic operations should adopt closed, ventilated and dust removal measures to ensure that the dust and toxic concentration in the air of the workplace meets the provisions of Chapter 3 of TJ36 and the requirements of TJ19.
5.2 Anti-vibration and noise: Anti-vibration and vibration reduction measures should be adopted for the parts that generate vibration in the production workshop, and the noise should meet the requirements of the noise hygiene standards in TJ36.
5.3 Anti-radiation: Shielding protection measures should be taken for high-frequency equipment, and isolation protection and heat exhaust and ventilation measures should be set for high-temperature thermal radiation and strong visible light operations.
5.4 Anti-heat and cold: The temperature of the workplace should meet the provisions of Articles 49 and 55 of TJ36. When the specified requirements cannot be met, anti-heat cooling and cold protection measures should be taken.
6 Casting
6.1 Pond furnace
6.1.1 The power supply of the feeder should be cut off first, the dangerous objects at the feeding port should be removed, and steel plates or mesh covers should be laid. After the furnace wall is cooled, personal protective equipment (safety helmet, gloves, protective glasses) should be worn before entering the furnace for operation. 6.1.2 The bottom support of the furnace should be vertical and firm to prevent collapse. 6.2 When starting the furnace, all air vents should be opened and the front furnace should be clamped with screws around to prevent fire. 6.3 It is strictly forbidden to mix flammable, explosive, toxic and other items in the furnace charge. The closed container should be broken and added to the furnace. 6.4 The ladle and slag rod must be dried, and it is strictly forbidden to use hollow rods. 6.5 The molten iron in the ladle shall not exceed 85% of the volume, and the lifting ladle shall not be out of control. 6.6 The core shooting machine shall be used for core making, and the mud core sand shall be made of non-toxic and harmless adhesive. A continuous furnace or electric oven shall be used to dry the mud core. 6.7 Sand treatment
6.7.1 When conveying old sand with a belt, a sealed dustproof device should be installed. Powdered auxiliary materials should be transported by pipes. 6.7.2 The sand mixing equipment should use a wheel-type sand mixer with good sealing performance. The quantitative equipment (screw feeder, disc feeder, etc.) should be sealed. 6.8 For cupola furnaces with a melting rate of less than 5t/h (including 5t/h), a climbing feeder should be used. For furnaces with a melting rate of more than 5t/h, a central feeder should be used, and a smoke and dust removal device should be installed.
6.9 For cleaning castings, a cleaning roller with a dust suction device should be used. 6.10 Dust-prone feeding and unloading points and material operation points should be equipped with dust prevention and dust suction devices, and the height difference of the material should be minimized. 6.11 Ventilation, dust prevention and protection management
6.11.1 The concentration of harmful substances in the air in the operating area of ​​the workshop shall not exceed the provisions of TJ36. 6.11.2 The operating positions and tunnels at the pouring, molding, and mud core drying furnace outlets should be forced to supply air, and the cooling section of the mold box conveyor belt should have a heat exhaust device.
6.11.3 A safe operation system should be formulated for fans and air ducts of various dust removal equipment, so that they can be managed by dedicated personnel, regularly discharged, cleaned and maintained, repaired, replaced, updated, and measured to ensure normal operation and dust removal effect. 6.12. Transportation and storage of auxiliary material particle size and powder 6.12.1 Metal furnace materials (pig iron, ferromanganese, ferrosilicon, old iron, pouring risers, etc.) are not allowed to be mixed, and the stacking height is generally not greater than the natural stacking angle of the materials.
6.12.2 Red coal powder must be stored in bags in the warehouse, stacked in blocks, with gaps around, the lowest load shall not exceed 0.35t, the warehouse temperature is strictly controlled below 40℃, and ventilation is required. There are fire prevention facilities and fire prevention systems. 6.13 Sealed dust prevention of casting equipment
6.13.1 The belt conveyor should be sealed with steel plates (0.8~~1.2mm) or non-metallic materials with high heat resistance, and it should be easy to disassemble and assemble. 100
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6.3.2 The feeding port of the sand mixer should be equipped with a closed door, a safe sampling port, and an insertable self-unloading negative pressure eliminator. 6.13.3 When repairing and cleaning the sand in the sand mixer and cooling drum, the power supply must be cut off and a safety guardian must be appointed. 6.13.4 Equipment such as drum screens, hexagonal screens, and vibrating screens should be sealed as a whole, and dust hoods should be installed at the top receiving point and the lower discharge point. A protective railing with a height of more than 1.2m should be installed in front of the drum screen.
6.13.5 The material inlet of the spiral feeder should be connected to the upper material warehouse, and the material port of the unpacking machine should have a grid cover and a dust collection device. 6.13.6 Reliable safety devices should be adopted between the molding machine pressure head and the sand box, and interlocking protection measures should be taken in the gas circuit and electrical circuit. 6.13.7 Roots blower should be installed in a separate room with sound and vibration reduction facilities. 6.14 The rear feeding elevator and hopper should have limit travel switches, which should be adjusted or replaced in time to ensure normal operation. 6.15 A protective net cover should be installed under the feeder track to check and repair the condition of each moving part in time. It is strictly forbidden to operate directly under the hopper. 6.16 The charging platform of the cupola should be sturdy and equipped with protective railings. Two people must operate when troubleshooting, and there should be air supply devices at the operating position. 7 Aluminum alloy die casting
7.1 Die casting equipment
7.1.1 It should have an alarm device controlled by the hydraulic system and a safety device for the movable plate interlocking. The hydraulic system should use kerosene. 7.1.2 A manipulator or special tools should be used to take materials and replace models. 7.2 Melting
7.2.1 The power frequency induction furnace and the crucible insulation furnace should be equipped with a fume hood. 7.2.2 The electric furnace should have obvious indicator lights and temperature control devices for power on and off. 7.2.3 It is advisable to use water-based die-casting paint instead of oil-based graphite, sodium fluoride, etc. Non-toxic and harmless refining agents should be used during refining. 7.3 Cleaning
7.3.1 The trimming press should be equipped with reduction and isolation measures, and the press safety device must meet the requirements of Article 6.5 of GB8176. 7.3.2 The grinder should be equipped with a dust removal device.
8 Special machine tools
8.1: The layout of the production site should comply with the process flow, and the distance between the machine tool and the wall and column should ensure that the lifting machinery can avoid direct lifting. 8.2 The installation of the machine tool should take into account the lighting and processing chip removal direction, the layout should be reasonable and standardized, and it should be fixed to the foundation with anchor bolts, and it is not allowed to be shelved for use.
8.3 The layout of the machine tool should meet the following requirements at the same time: a
The machine tool can be freely operated under the conditions of complying with the safety operating procedures. The lifting machinery can lift the mold, fixture, and vertically to the machine tool. There is space and place for disassembling and installing the main baby parts of the machine tool. The station tools, ring materials, semi-ring products, and crystals should have temporary storage areas and should not occupy pedestrian passages. The front and back of the machine tool (combination, semi-automatic, automatic, assembly line) should be kept away from adjacent staff as much as possible: The distance between the machine tool and the distribution box and cabinet should be no less than 1.5m; f.
The foundation of the machine tool must meet the requirements of the machine tool manual. 8.4 The signs, graphic symbols, engravings, and engraved line markings of the operating mechanism should be correct and clear. The positioning should be clear, correct and reliable, and the photoelectric display or sound device should be accurately coordinated.
8.5 After the V-belt and round belt are loose, fatigued or broken, they should be updated in time and are not allowed to be connected for use. The speed-changing tower pulley must be stopped before changing speed.
8.6 Gears, worms, and worm wheels should be installed in boxes. When exposed, they must be equipped with protective covers and lubricants that match the tooth surfaces. 8.7 The tensioning device of the chain drive must meet the design requirements. The tensioning device must be intact and reliable and have measures to prevent loosening and falling off. 8.8 The exposed transmission parts should be connected reliably and have measures to prevent human contact and loosening. 8.9 Hydraulic system
QB1596--1992
8.9.1 The transmission shafts of the oil pump and the drive motor should ensure their coaxiality, and protective covers should be installed when the coupling is exposed. 8.9.2 The pressure gauge should be sensitive, accurate, reliable, leak-free and calibrated regularly. 8.9.3 The oil temperature should be kept above 10C and below 60℃, and the temperature rise should not exceed 30℃. 8.9.4 The oil circuit is unobstructed, well sealed, and leak-free. The pressure that the pipe joints and pipelines can withstand shall not be less than 1.5 times the maximum working pressure of the system.
8.10 The machine tool must be equipped with a single-machine single-control power cut-off switch, and local lighting must use safe voltage. 8.11 The dangerous area of ​​the machine tool processing part should have a reasonably designed and reliably installed protective device. 8.12 Grinding processing must comply with the requirements of GB4674. 9 Stamping
9.1 Equipment
9.1.1 The press must comply with the requirements of Article 6.2 of GB8176. 9.1.2 The press must be in good technical condition, and all fasteners must not be loose. The clutch and brake foot safety power switches must have protective covers.
9.1.3 For presses operated below the ground, protective railings should be added to the edge of the pit, and measures such as reducing pads and spacer grooves should be taken. 9.2 Dies
9.2.1 The design, manufacture and use of dies must comply with the requirements of Articles 5.3 and 6.3 of GB8176, and mechanization and automation should be adopted as much as possible. 9.2.2 To produce batch-standard products, continuous dies, multi-station dies, compound dies and automatic dies should be developed to realize stamping lines and automatic lines.
9.2.3 The mold should be installed correctly and firmly, and should be compatible with the equipment model and tonnage. The closing height of the press should be slightly larger than the closing height of the die, and guide pillars and positioners should be provided. Protective devices must be provided when the guide pillars and guide sleeves are disengaged. 9.2.4 The die should be equipped with unloading devices such as punching, ejecting parts, and pneumatic blowing parts required by the tooling. 9.3 Safety devices
9.3.1 The safety devices of the press must comply with the requirements of Article 6.5 of GB8176. 9.3.2 For those who work within 100mm of the die closing area, sensitive, reliable and practical safety devices must be installed. If there is no condition to install, effective and easy-to-operate special tools must be selected. 9.3.3 Each press machine shall be equipped with safety signs such as prohibition, warning and instruction, which shall comply with the provisions of GB2894. 10 Pickling, phosphating and electroplating
10.1 Ventilation
The solution tank should take effective measures as much as possible to prevent and reduce the emission of harmful gases, so that the air in the workshop meets the requirements of TJ36 and TJ19. 10.2 Plating tanks, acid tanks, acid storage tanks, etc. should have a certain strength and must be made of acid-resistant materials. Leakage is strictly prohibited. 10.3 The mechanical transmission systems such as cranes, water-throwing machines, cathode movement, etc. used in the production line must have safety protection devices. 10.4 When using electric heaters for heating, there must be good power protection devices and fire prevention measures. The steam heating pipe must be made of corresponding corrosion-resistant materials.
10.5 Solution preparation
10.5.1 Containers for various chemicals should be clearly marked and mixing is strictly prohibited. 10.5.2 The preparation, storage and transportation of cyanide solutions must be equipped with special equipment. It is strictly prohibited to contact with acid solutions. Cyanide must be stored separately and the "two-person, double-lock" storage and use system must be strictly implemented. 10.5.3 Sodium hydroxide (solid) should be crushed mechanically as much as possible, and protective measures must be taken for manual crushing. 10.5.4 Special tools should be equipped when adding chemicals to the solution tank. 10.5.5 The liquid surface of the pickling tank should be at a certain distance from the tank edge, and acid overflow is strictly prohibited. 10.5.6 When preparing acid, water must be added first and then acid. When transporting and adding acid, special tools must be equipped. Acid should be added mechanically or by other methods as much as possible.
QB1596.1992
10.5.7 Corrosive items such as triacids, dialkalis, chromic anhydride, etc. should be stored in a special warehouse and managed by a dedicated person. 10.6 Cleaning and maintenance
10.6.1 If a fault occurs in the electroplating production line, it must be shut down for maintenance. When troubleshooting the solution tank, reliable safety measures must be taken. 10.6.2 When cleaning or repairing the solution tank, the solution in the tank must be drained and rinsed clean before proceeding. When working in the tank, safety measures must be taken to facilitate going up and down.
10.6.3 Before cleaning and repairing, the concentration of hydrogen sulfide and hydrocyanic acid in the air should be measured in the solution tank. If it is higher than the national allowable standard, effective protective measures must be taken.
10.6.4 Sediments in the grooves should be cleaned regularly and transported out in time for proper disposal. 10.7 The electroplating production line must be equipped with effective start and stop signal devices. 11 Painting
11.1 The labor safety and sanitation of the painting workshop shall comply with the provisions of Chapter 4 of GB6514. 11.2 The ventilation and purification measures or facilities of the painting workshop shall comply with the provisions of GB6515. 11.3 The electrical equipment, open flames and ignition sources equipped for the painting process shall comply with the provisions of Chapter 5 of GB6514. 11.4 Preparation, storage and transportation of paint
11.4.1 Paint preparation room
11.4.1.1 The preparation of paint used in the painting process shall be carried out in a special paint preparation room, which shall be located outside the painting workshop and isolated from the painting operation site. The preparation of new varieties of paint or new process paint is allowed to be prepared on site within 20kg. 11.4.1.2 The paint preparation room shall be equipped with ventilation, lighting and electrical equipment in accordance with the provisions of Articles 11.2 and 11.3 of this Regulation. 11.4.1.3 Various flammable and explosive materials in the paint preparation room shall be classified and neatly stacked. 11.4.1.4 The barrel opening tools in the paint preparation room must be made of copper, and the containers for solvents and paints must be made of metal. 11.4.1.5 Gasoline and solvents must not be impacted or exposed to the sun during transportation and movement, and leaks should be removed and properly disposed of in a timely manner. 11.4.1.6 Recycled waste solvents should be returned to the warehouse regularly and are strictly prohibited from being placed outdoors. 11.4.1.7, the paint preparation room should be equipped with a warning sign prohibiting fireworks. 11.4.2 Pipelines for transporting paints, solvents and other liquids should be connected in good condition and leakage is strictly prohibited. 11.5 Dipping paint
11.5.1 On the continuous dipping paint production line, partition protection facilities and exhaust devices should be installed around the dipping tank and leveling area, and the leveling section should be equipped with a paint tray and paint liquid recovery device.
11.5.2 The paint dirt in the paint tray should be cleaned regularly and centrally processed. 11.6 Scraping paint
11.6.1 The diluent solvent for putty should be stored in a special box (cabinet) and kept by a dedicated person, and the storage volume should not exceed 17kg. 11.6.2 The putty container should be cleaned and stored in a designated place after the shift, and it is not allowed to be placed randomly. 11.6.3 The hook on the workpiece should be hung straight and secure. 11.7 Air spray painting operations should comply with the provisions of Chapter 9 of GB6514. 11.8 Naturally dried painted workpieces should be placed in a place approved by the enterprise's safety and technology department. If it is indoors, it should be a special room; if it is outdoors, there should be no open flames or sparks within 5m around.
11.9 Electrostatic spray painting
11.9.1 The structure and requirements of the electrostatic spray painting room shall comply with the provisions of Article 11.1.4 of GB6514. 11.9.2 The minimum distance between the electrostatic spray gun or bell and the workpiece, as well as the minimum distance from the grounding equipment and grounding parts shall comply with the provisions of Articles 11.2.1 and 11.3.2 of GB6514. 11.9.3 The electrostatic spray painting room shall be equipped with ventilation facilities and paint mist filtering devices. 11.9.4 The conveyor belt (chain) in the electrostatic room shall have reliable grounding and smooth operation. 103
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11.9.5 The positive and negative output terminals of the high-voltage generator used for electrostatic spray painting shall have a distance, and there shall be a protective device proportional to the voltage (that is, the closer the distance, the smaller the output voltage, and the farther the distance, the larger the output voltage). 11.9.6 The amount of paint stored in the electrostatic spray painting workplace is not allowed to exceed the amount used in one shift. 11.10 Paint supply system
11.10.1 The pressure tank paint supply device shall comply with the requirements of the "Regulations on Safety Technical Supervision of Pressure Vessels" (Lao Guozi (1990) No. 8). 11.10.2 The gravity-type or paint pump suction paint supply device shall have fire and explosion prevention measures for electrical equipment. 11.11 Cleaning and maintenance of paint spraying equipment.
11.11.1 The flammable deposits, air inlets and pipe deposits in the spraying room, electrostatic spraying room and immersion paint room must be checked regularly. When the deposited cross-section reaches more than 60%, the operation must be stopped and cleaned up. 11.11.2 The spray gun and the rotary cup should always be kept clean, and the flash point of the cleaning solvent should not be lower than 38°C. 11.12 The labor safety of powder electrostatic spraying operations shall comply with the provisions of Chapter 12 of GB6514. 11.13 Drying
11.13.1 The drying equipment in the paint shop should be centralized and isolated from the spray paint room. 11.13.2 When the workpiece enters the high temperature zone of the drying oven, no residual paint is allowed to drip, and an automatic overflow control device for the drying oven should be installed. 11.13.3 When a workpiece fails in the drying oven, the machine must be stopped and the power supply must be cut off. Anti-scalding measures should be taken to eliminate the failure, and a special person should be designated for supervision. 11.13.4 For intermittent ovens, the workpiece should be placed in a designated location after painting and enter the oven after the residual paint has dripped off. 11.14 Decals
11.14.1 When applying polyester glue decals, there should be fireproof and explosion-proof ventilation facilities in the room, and the lighting, open flames and ignition sources of electrical equipment should comply with the provisions of Chapter 5 of GB6514.
11.14.2 Regularly clean the residual paint around the static cup, and shut down when not working. 11.14.3 Gasoline used for decals should be placed in a covered container and in a designated location. Waste decals should be placed in a waste paper box and handled by a designated person. 11.15 The paint shop workplace should be equipped with sufficient and effective fire-fighting equipment. 11.16 The flammable and explosive parts on the painting production line should have automatic alarm and automatic fire extinguishing equipment. 11.17 The paint process should use benzene-free paint and benzene-free solvents, or powder coatings instead of solvent-based coatings. 12 Heat treatment
12.1 Heat treatment environment
12.1.1 The heat treatment workshop should have an independent factory building. It is strictly forbidden to use this structure. The ventilation is good. The height of the factory building is not less than 5. Skylights should be set up as much as possible, and effective exhaust devices should be installed.
12.1.2 The transportation pipelines of methanol, liquefied petroleum gas, ammonia, kerosene, etc. should be arranged neatly. Plastic pipes that transport flammable, explosive and toxic media should be protected from heat and rupture, and leakage is strictly prohibited.
12.1.3 The water and oil tanks for heat treatment should be arranged away from the passage as far as possible, and the distance between various bath furnaces and water and oil machines shall not be less than 1.5m. 12.1.4 The medium of various bath furnaces should be selected according to the required degree, and the working temperature shall not exceed the corresponding high temperature of the formula. 12.1.5 Various bath furnaces should be equipped with effective ventilation and condensation removal devices; transformers and overflow control cabinets of electric heating equipment must have measures to prevent electric shock and keep ventilation and dry.
12.1.6 Evaporation on the surface of nitrate bath furnaces should be removed, overheating is strictly prohibited, and combustibles are strictly prohibited from being piled up in the work area. 12.1.7 Heat treatment workpieces must be preheated, and the work area should be kept dry. 12.1.8 Heat treatment equipment that generates heat, light, and electromagnetic radiation should adopt heat, light avoidance, shielding and other protective measures. 12.2 The temperature of the ignition oil shall not exceed the flash point temperature. 12.3 Carbon monoxide, carbon dioxide, ammonia, unsaturated hydrocarbons and other residual gases discharged from gas carburizing heat treatment should be ignited or purified.
12.4 Waste slag from the heat treatment process should be properly handled in a timely manner. 12.5 Box-type drip-controlled multi-purpose furnace
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12.5.1 Fireworks are strictly prohibited in the instrument and operation room of the box-type drip-controlled multi-purpose furnace. 12.5.2 The proportion of protective atmosphere filled into the furnace should meet the standards and must reach the safety value. 12.6 Nitrogen must be filled in the trial operation or restart of the vacuum furnace, as well as during air cooling, and the oxygen content in the nitrogen must be less than 3%. 12.7 Box-type drip-controlled multi-purpose furnaces and vacuum furnaces should be equipped with sensitive and effective power outage and water outage alarm devices. 12.8 The heat treatment process should adopt the continuous automatic heat treatment carburizing method. The heat treatment process using sodium cyanide as raw material should not be used. Enterprises that use it in small quantities should properly handle the waste slag.
13 Assembly and packaging
13.1 Assembly
13.1.1 The mechanical equipment used for assembly should be equipped with qualified tooling to ensure that the workpiece can be positioned and clamped during assembly. 13.1.2 The assembled parts and components should be placed in special containers and should be neatly stacked. 13.2 The uphill, downhill, turning and crossing passages of the continuous conveyor line (suspension chain) should be equipped with protective devices. 13.3 The belt conveyor should have an electrical interlocking device, an emergency stop button every 30m, and an alarm device when the equipment is started. 13.4 All types of solenoid valves should use safe voltage, and the electric (gas) cutter should be protected by a sheath. 13.5 Touch-up paint
13.5.1 The scope of the touch-up paint and drying area should comply with the provisions of 1.6.2C and 8.7 of GB6514. 13.5.2 In winter, intermittent drying equipment can be used for touch-up paint drying, but it must comply with the provisions of Chapter 8 of GB6514. 13.6 Packaging
13.6.1 There should be obvious fire ban signs in the workplace and finished product warehouse, and the packaged parts should be neatly stacked to ensure that the fireproof passage is unobstructed. The packaging should be cleared after each shift.
13.6.2 Various tools used in packaging must be safe and reliable. 13.6.3 The stacking height of finished product boxes shall not exceed 1.8m. Additional notes:
This standard was proposed by the Production Coordination Department of the Ministry of Light Industry. This standard was drafted by the Shanghai Light Industry Bureau. The main drafter of this standard is Ye Shanliang.
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