Mesh belt furnace is commonly by furnace, mesh belt transmission system and temperature control of three most, it is mainly used in powder metallurgy products, sintering and the reduction of metal powder. According to the mesh belt furnace operation can be divided into the furnace roller and plate furnace two, plate furnace and points with and without muffle furnace muffle furnace two kinds.
Because the mesh belt furnace in the kiln system is often used to, so hard to avoid can appear some fault, the following several kinds of common failures and solutions for a brief analysis and maintenance.
1, the heating switch is not open, but the temperature is still rising. The cause of this situation is heating ac contactor contact adhesive in one, can't disconnect. Out to do is change the contactor.
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2, open the heating switch power trip. Cause there are three possible reasons for this: the first is the heat pipes and electric short circuit, ruled out around the furnace internal way is apart, check the heating tube; The second is the total brake switch power supply capacity is too small, elimination method is to replace the large capacity switch; The third is the main power switch box installed leakage protection switch, but the connection is not correct, eliminate and correct way is to check line.
3, after electrify unbootable. There are two possible reasons for this: the first is the power supply do not conform to the requirements of specification, elimination method is connected to specification requirements on power supply; The second it is possible to zero line not connected, elimination method is to connected to the zero line.
4, the internal temperature of the furnace body is not uniform, abnormal high. Caused by the three possible reasons: the first is a response to a thermocouple is not sensitive, elimination method is to replace thermocouple; The second is the temperature controller is not sensitive, the movement out of control and elimination method is to change the temperature control; Put unreasonable, the third is the workpiece oven door didn't close, excluding method is to change the artifact put method, shut the door.
Only on a regular basis within the furnace on the various projects, such as the control box, top cover vent, control box parts often check project such as screws, believe that we can save for a rainy day, avoid many unnecessary failure.