qizhen0926
Guest
|
 |
Safe operating procedures for vacuum sintering fur
« on: Aug 7th, 2017, 2:33am » |
 Quote  Modify
 Remove
|
1. Intermediate frequency power supply, vacuum furnace furnace, induction coil cooling water source - the reservoir of water must be filled, the water shall not have impurities.
2. Start the pump, so that the frequency of power supply, vacuum furnace induction coil, the furnace cooling system water circulation is normal, and adjust the water pressure control in the specified value.
3. Check the vacuum pump power supply system, belt belt belt tight, vacuum pump oil is located in the oil seal observation center line. Check the proper, manual rotation of the vacuum pump belt, if no exception, can be closed in the case of butterfly valve, start the vacuum pump.
4. Check the vacuum furnace body, requiring a vacuum furnace body health, induction coil insulation is good, sealed vacuum tape with flexibility, size qualified.
5. Check the vacuum handle of the lever to start the handle is flexible.1600 1700 1500 degree laboratory ceramic muffle furnace
6. Check whether the rotary Maxwell vacuum gauge meets the requirements.
7. Check the graphite crucible, furnace accessories are complete.
8. After the above is ready, turn on the power, IF power closing, according to the IF start rules, try to start frequency, after the success of the frequency,
9. Vacuum furnace cover on the observation, temperature holes, each opening are required to clean treatment, in order to observe and temperature measurement.
10. Furnace should be based on different sintering products, take the appropriate furnace way. According to the relevant material installed furnace rules plate, not free to change.
11. In order to maintain constant temperature, to prevent heat radiation, heating crucible with two layers of carbon fiber, and then cover the insulation screen.
12. Pad is a good vacuum seal tape.
13. Operate the lever handle, turn the vacuum furnace top cover and the furnace body close, put down the top cover, and lock the fixed nut.
14. Slowly open the butterfly valve, pumping furnace air, to the vacuum to reach the specified value.
15. In the vacuum to meet the specified requirements, began to start the frequency, adjust the IF power, according to the provisions of the material sintering operation; heating, insulation cooling.3-4kg gold induction melting furnace
16. After sintering, stop the frequency, press the stop frequency switch, inverter stop working, disconnect the power supply sub-gate and disconnect the power gate.
17. After observing the furnace from the furnace observation hole, turn off the vacuum pump butterfly valve and disconnect the vacuum pump current, then connect the water to continue cooling the induction coil and the furnace, and finally stop the pump.
18. IF voltage 750 volts with electric shock hazard. In the entire operation and inspection process, pay attention to safe operation, do not touch the IF cabinet.
19. In the sintering process, at any time from the furnace side of the observation hole to see whether the induction loop arc phenomenon, such as the discovery of abnormal phenomena, should immediately report the relevant personnel.
20. Start the vacuum butterfly valve should be slow, otherwise it will be too much trouble due to pumping oil, bring adverse consequences.
21. Correct use of rotary Maxwell vacuum gauge, otherwise it will cause a vacuum reading error or due to harsh operation caused by mercury overflow caused by pollution.
22. Note that the vacuum pump belt drive safe operation.
23. In the pad vacuum seal tape, cover the furnace body cover, pay attention to prevent the pressure hand.
24. Where in vacuum conditions, easy to volatilize the impact of vacuum hygiene, resulting in pipe clogging, vacuum pump dirty parts or containers, not into the furnace.
25. Where the product with a molding agent (such as oil or paraffin), must be removed before the furnace sintering, otherwise it will cause adverse consequences.
26. All sintering process, pay attention to the water pressure range and cooling water circulation, so as to avoid accidents.Roller Hearth Heating Furnace
|
Sponsored by: The Fans!
Home
Help
Search
Members
Chat
Member Map
Login
Register
Reply
Add Poll
Notify of replies
Send Topic
Print