Special temperature-control cooling thermal treatment technology

A temperature-controlled cooling and process technology, applied in the field of heat treatment technology, can solve problems such as affecting the hardness of high-frequency quenching, scrapping workpieces, and increasing production costs.
CN102634646AActive Publication Date: 2012-08-15JIANGSU SUNWAY PRECISION FORGING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU SUNWAY PRECISION FORGING
Publication Date
2012-08-15

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Abstract

The invention discloses a special temperature-control cooling thermal treatment technology which is characterized by comprising the following steps of: placing a blank workpiece to be processed after warm forging in a continuous mesh-belt temperature control furnace; and controlling the temperature in the furnace so as to transform the structure in a constant-temperature environment, wherein a heating area of the continuous mesh-belt temperature control furnace is divided into four areas, the temperature of the first and second areas is 630-660 DEG C, the temperature of the third area is 590-630 DEG C, and the temperature of the fourth area is not higher than 560 DEG C; the time of the workpiece passing through the whole mesh belt is 75-90 minutes; and the workpiece enters a slow-cooling area and is discharged when the temperature is lower than 500 DEG C. The technology is relatively simple, the requirements on equipment are low, the production efficiency is high, the production period is short, and the cost is low.
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Description

technical field

[0001] The invention relates to a heat treatment process, in particular to a process related to temperature-controlled cooling. Background technique

[0002] At present, in the prior art, after the blank is processed by the warm forging process, in order to smooth the subsequent cold finish forming and spline twisting, the blank after warm forging must be annealed to soften the material and reduce the deformation resistance. Reduce the hardness dispersion of the workpiece to control the technical parameters of the twisted spline. And it is not conducive to the subsequent medium and high frequency quenching process.

[0003] After the logistics turnover, and then enter the next process.

[0004] Moreover, the annealing process after warm forging and the turnover of intermediate logistics from forging to annealing greatly increase the production cost, and there is also the risk of decarburization of the workpiece caused by annealing. After the decarburization...

Claims

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