The welding and quenching of the shearer picks is completed once: the tooth body is placed in the coil of the induction heating device to heat and weld the cemented carbide cutter head, and the frequency range is 15-25KHZ, the temperature is 840-920 ° C, and the temperature is constant. The time is 5-10 minutes, then the toothed body with the cutter head is directly placed in the 260-290 °C nitrate salt tank for quenching and cooling, the composite process can be completed, the main advantage of the process is to save the salt The heating process of the bath furnace improves the toughness of the cutter head, prolongs the service life, improves work efficiency, reduces power consumption, and reduces equipment investment.

The main components of coal mining pick/bit induction brazing equipment:

1) Automatic transmission rack: frame, speed control motor, sprocket, chain, asbestos board, stainless steel bracket, governor, electrical control, etc.

2) Intermediate frequency power supply: 200KW type main control cabinet, special furnace for picking welding process, etc.

(3) Composition of nitrate salt furnace: stainless steel plate or ordinary steel plate is used for inner tank, insulation layer, outer casing, transmission mechanism, heating part of molten nitrate salt, cooling part, stirring device, temperature control device, electrical control, material hook and so on.

Coal mining pick / bit induction brazing power supply power saving effect

The class produces 10 tons of forgings, saving 80-100 degrees per ton, saving 560-700 yuan for electricity in the class; saving 20,000 yuan for electricity in the month; double or three shifts, saving electricity costs of 40,000-60,000 yuan per month. Equipment investment can be recovered in a few months.

Features of coal mining pick/bit induction brazing equipment:

(1) The comprehensive mechanical properties of the cutting tooth body are stable and the strength is high;

(2) The weld is full and full, the appearance is exquisite, and the welding strength is high;

(3) Save time and labor, only need two people to load and unload, operate a full set of equipment;

(4) Power saving, saving more than 30% of electricity compared with traditional processes;

(5) Improve efficiency: 4-6 finished picks per minute for different models;