Composite medium thrust wheel heat treatment technology
A technology of composite media and supporting rollers, which is applied in the direction of heat treatment equipment, improvement of process efficiency, manufacturing tools, etc., can solve the problems of slow quenching speed, deformation cracking hardness, unevenness, etc., achieve uniform cooling, uniform hardness, and improve induction The effect of heating rate
Inactive Publication Date: 2016-08-31
KUSN KENSETABU BUHIN
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Problems solved by technology
[0004] Aiming at the deficiencies in the above-mentioned technologies, the present invention provides a heat treatment process for supporting rollers, which solves the problem of supporting rollers in the prior art by adopting the cooling process of clear water-salt water-oil and increasing the tempering temperature of the supporting rollers. The wheel quenching speed is slow, there are problems of deformation and cracking, and the hardness after quenching is different. It has the advantages of uniform hardness of the supporting wheel and high quenching efficiency.
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[0050] As another embodiment of the present invention, the shape of the induction coil body is the same as that of the support wheel, and it heats the support wheel uniformly at the same time in the energized state; the induction coil body is sleeved on the outside of the support wheel and the support wheel There are gaps in between. The shape of the spray hood is the same as that of the track roller, and the distance from each nozzle to the surface of the track roller is equal. The induction coil body with the same shape as the track roller is used to inductively heat the track roller, and the nozzles arranged in a matrix inside the spray cover with the same shape as the track roller are sprayed and cooled to the track roller, so that each of the induction coil body The distance from the center to the surface of the track roller is the same, the distance from each nozzle to the surface of the track roller is the same, and the track roller rotates, so that the track roller rec...
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The invention discloses a composite medium thrust wheel heat treatment technology. The thrust wheel heat treatment technology includes the steps that firstly, a thrust wheel rotates around the center of the thrust wheel, and high-frequency induction heating and medium-frequency induction heating are sequentially conducted on the thrust wheel through an induction coil body; secondly, the thrust wheel obtained after induction heating is cooled, wherein the thrust wheel obtained after induction heating is subjected to clean water spraying cooling, saline water spraying cooling and oil spraying cooling in sequence through spraying nozzles arranged in a spraying cover in a matrix manner and facing the thrust wheel; and thirdly, the thrust wheel obtained after spraying cooling is subjected to tempering heating, heat insulation and cooling in air in sequence. The third step specifically includes the following sub-steps that S31, the thrust wheel obtained after spraying cooling is subjected to tempering heating and is heated to the temperature ranging from 500 DEG C to 550 DEG C; S32, the thrust wheel heated to the temperature ranging from 500 DEG C to 550 DEG C is subjected to heat insulation for 150 s; and S33, heat insulation of the thrust wheel obtained after tempering heating and heat insulation is stopped, and cooling is conducted. The thrust wheel heat treatment technology is provided and has the beneficial effects of being uniform in thrust wheel hardness and high in quenching efficiency.
Description
technical field [0001] The invention relates to a metal material heat treatment process, more specifically, the invention relates to a composite medium support roller heat treatment process. Background technique [0002] The track roller is one of the four-wheel belts of the tracked construction machinery chassis. It is mainly used to carry the weight of large machinery such as bulldozers and excavators, so that the track can move forward along the rolling direction of the track rollers. Therefore, the track rollers are required to have Strong strength, hardness, wear resistance. In the prior art, a quenching process is usually adopted, and the hardness of the surface of the supporting wheel is increased by performing processes such as quenching and tempering on the surface of the supporting wheel. In the quenching process, induction coils are usually used to heat the rollers, and medium-frequency induction heating is used to ensure the hardness of the rollers. [0003] In...
Claims
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Login to View More IPC IPC(8): C21D1/18C21D1/42C21D1/667
CPCC21D1/18C21D1/42C21D1/667Y02P10/25
Inventor 燕伟周雪龙郝生前
Owner KUSN KENSETABU BUHIN