Installation of electric contact heating and elect

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Safe use technology of vacuum heat treatment furnace, electric contact heating and electrolytic heating equipment

1. Safe operation of vacuum heat treatment furnace

vacuum heat treatment furnace is an advanced heat treatment equipment that has been greatly developed in recent years, and the workpiece is heated and cooled in the space of ultra-low pressure. It has the advantages of good quality, energy saving, safety and less pollution

although the heating body of the vacuum furnace uses low-voltage electricity, the power supply voltage is still 380V, and safe electricity is still required during operation

when the vacuum furnace is manufactured, it should be ensured that there is no air leakage and water leakage. The sealing of the vacuum furnace body and cover is made of rubber parts, so it needs to be cooled with water interlayer. If water leaks into the furnace, the temperature of the furnace will be very high, which will cause an explosion. The surface oil stain of the workpiece treated in the vacuum furnace should be cleaned, and the oil vapor from the quenching oil tank should not enter the furnace. These oil vapors and air will not affect the use until the critical moment. After mixing, they will form an explosive atmosphere, which will explode once there is an open fire or power on. Therefore, after the vacuum furnace is loaded, the furnace door should be closed, and the furnace can be powered on for heating only after the chamber is vacuumed, which causes the line to jam or automatically break during the printing process

2. Safe operation of electric contact heating quenching equipment

electric contact heating uses low voltage and high current (350~400 can easily realize the exchange of accessories a/cm2), and when the electrode is in contact with the workpiece surface, the workpiece surface is locally heated and cooled rapidly through resistance to complete quenching. Operators should be familiar with and abide by the operating procedures for contact heating and quenching and the rules for safe use of electricity. Wear insulating shoes, gloves and other protective equipment before operation. The surface of the workpiece shall be carefully cleaned without burrs, iron filings and oil stains. In case of more sparks during heating and quenching, shut down the machine to find out the cause

3. Safe operation of electrolytic heating and quenching equipment

electrolytic heating and quenching equipment uses high-voltage direct current (200~300v) to electrolyze electrolyte with a certain formula. The method of heating and cooling the surface of the workpiece (cathode) sharply by using the cathode effect, so that the surface of the workpiece can be hardened. Because the electrolytic heating and quenching equipment is relatively simple, with high productivity, low energy consumption, easy automation, low cost and stable quality, it is increasingly widely used. Because the AC voltage and DC voltage used are relatively high, 1. Clean, dehydrate and dry the recycled broken pieces of cross-linked PE cables and PE hollow blow molded products (the size of the broken pieces is 4 ⑺ mm); The rules for safe use of electricity must be observed during operation. Wear insulated shoes and gloves. Commonly used electrolytes include carbonate, caustic soda, calcium chloride, magnesium chloride, etc. 5~10% sodium carbonate aqueous solution should be used as the electrolyte as far as possible, which is less harmful, safe and reliable. And there is no corrosion to the workpiece and container. The waste liquid produced by electrolytic quenching can only be discharged after being treated to meet the discharge standard

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