The power voltage used in induction heating equipment is 440V,380V, 415V, 575V, 660V Can be customized, but some internal voltage reaches up to 10kV or more. Therefore, attention must be paid to the safety of high voltage when using induction heating and heat treatment equipment.
(1) Medium-frequency induction heating frequency conversion equipment, there are two types of generator type and silicon controlled type. The highest voltage of intermediate frequency current can be up to about 750V, and safety rules must be followed when using it (the power of frequency conversion machine is generally greater than 100kW). If room should be well ventilated, keep clean, tidy, and dry. Intermediate frequency equipment must have more than two people to boot operation and a designated operator. Operators should be familiar with and abide by the operating rules of intermediate frequency equipment and wear the prescribed protective equipment. The workpiece should be removed burr, iron filings, and oil dirt, otherwise, it is easy to produce an arc. During operation, the workpiece should also be prevented from contacting with the sensor to produce an arc. When using medium frequency quenching machine tools, attention should be paid to the safe operation rules of electrical, mechanical, and hydraulic transmission. The equipment shall be repaired by a special person. Before repair, the discharge rod shall discharge the capacitor, etc. It is strictly prohibited to rush repair with electricity.
(2) Power frequency induction heating equipment is used to heat and quench or normalize large workpiece with industrial electric frequency, low voltage, and large current. Use should abide by the safe electricity rules.
In order to prevent the breakage of a large workpiece during the power-frequency induction heating operation, the operation procedure of the power-frequency heat treatment and the corresponding technological procedure of the large-size heat treatment must be strictly observed. Ultrasonic inspection should be carried out on large parts one by one first. After inspection, the workpiece with defects such as white spot, serious segregation and loose shall not be heated by using frequent equipment.The workpiece should be removed burrs, iron filings, and oil stains to prevent arc. In production operation, the person in charge must be appointed and the operator must be familiar with and abide by the operating rules of power frequency equipment.
The workpiece should have a hoisting hole or appropriate card platform to ensure the safety of the workpiece handling and hoisting. Operators should pay attention to the safety rules of electrical and mechanical transmission.