Through type muffle furnace, gas carburizing furnace heat treatment work safety rules

1. Blast furnace gas pipes should be checked to open the valve sealing and gas pipeline pressure is not less than the specified value.2. Air furnace test putter agencies, institutions and rod lifting mechanism work.3. Release of the compression spring to a predetermined size range.4. Regulate the water level in the water seal, seal exhaust combustion tube through the open valve, close the valve through the seal.5. The feed side of the oven door closed, turn on the discharge side of the door look, when kerosene spray mist flow direction normal form and then close the door.6. The feed chamber burner lit.7. Exhaust valve seal shall be discharged by the barrier.8. First, the intermittent production carburizing furnace tank.9. Parts placement, parts and not less than 5 mm distance between the parts; Part bottom edge does not exceed the specified length and height.10. To quickly switch the feed and discharge gate door, but the speed of push-pull rod to be stable.11. Parts should be located in a pre-cooling chamber is below the thermocouple.12. Furnace filled with 24 chassis only allowed to continue feeding must first pull push.13. When we shutdown the furnace zone down to the same temperature, and then began to naturally cool.14. Equipment cleaning:(A) in the continuous production carburizing furnace tank cleaned once a week, intermittent production furnace tank cleaning should be carried out immediately after shutdown,(2) tank cleaning oven temperature is 850 ~ 870 ℃ when the chassis all out;(3) a nozzle with compressed air blown from the feed end of the furnace, the valve opening was not too much, blowing must move around, to prevent local overheating;(4) In the carburizing gas burner with kerosene before cleaning.15. Chassis or fixture should return after quenching chilling room to remove oil.16. Found that the exhaust pipe blockage (sudden increase in pressure inside the furnace) should be cleaned up immediately. First open the exhaust valve seal barrier, and then close the valve exhaust pipe through the water seal. Cleared should hit the exhaust pipe valve seal the opening, and then close the barrier seal exhaust valves.17. Note:(A) combustion conditions and constant attention to districts gas pressure;(2) Open the door can not stand them, to prevent the flame jet burns;(3) Note whether the combustion burner into sections and wedge the door with torches check for leaks;(4) found in the work burner flame goes out, you should immediately turn off the gas valve, close the air valve;(5) working parts from falling or wedge the door switch not working, you should stop feeding, remove the parts.