A bell type sintering box protection device

Abstract

The invention discloses a bell-jar type sintering tank protecting device, and relates to bell-jar type sintering equipment. The device comprises a base (1), a sintering tank (2) and a graphite disc (3), wherein the graphite disc (3) is arranged in the sintering tank (2), the sintering tank (2) is provided with welding points (6), the edge of the base (1) is provided with a water tank (7), the bottom of the sintering tank (1) is provided with a cushion plate (4), the cross section of the cushion plate (4) is in an inverted U shape, the cushion plate (4) is arranged in the water tank (7), and sealing water (5) is arranged between the cushion plate (4) and the water tank (7) to realize the buffering function. The device has the advantages that by utilizing the compression and expansion of the sealing water (5), the phenomena of the cracking of the welding points (6), the lengthening of the jar body and the like due to the high-temperature expansion or low-temperature shrinkage of the sintering tank (2) are avoided, and the phenomena of the blocking of the resetting of a sintering transverse beam, the oxidization of products, the sintering of waste products and the like, caused by the gas leakage of the sintering tank (2) and the lengthening of the sintering tank body are avoided; the phenomenon of pressure not being applied to parts during sintering is avoided; meanwhile, multiple potential safety hazards are omitted.

Description

technical field [0001] The invention relates to a bell-type sintering box equipment, in particular to a bell-jar sintering box protection device. Background technique [0002] Sintering is one of the most important processes in the production of sintered metal friction materials. During the sintering process, the material is compacted. The commonly used equipment for sintered friction materials is a bell furnace. The sintered friction parts are placed on the base in one or several stacks. Put the pressure-transmitting sintered graphite discs on top of the sintered parts, then cover the sintering box (protective cover), and then cover the heating bell jar. Gas (explosive), energized for heating and sintering, usually the sintering temperature is 800-1040°C, after 2-3 hours of high-temperature sintering, the heating bell jar is removed, and then the cooling cover is put on pressurized water cooling, and the sintering box is sintered during the whole sintering process To prote...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above technical problems, the present invention provides a bell-jar sintering box protection device, mainly to solve the problems of bell-type sintering box weld cracks and box elongation, improve the life of the sintering box, and provide a structure and Simple manufacturing process, safe and reliable protective device

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