Stock plate, stock rack and workpiece arrangement method for heat treatment and high pressure gas quenching

Abstract

The invention relates to a stock plate for heat treatment and high pressure gas quenching. The stock plate comprises a stock plate body; a plurality of limiting parts are arranged on the stock plate;the multiple limiting parts are arranged in lines and rows; the limiting parts in the adjacent lines or the adjacent rows are arranged in a staggered mode; and the distances between the adjacent limiting parts in the same line or the same row are gradually increased from the edge of the stock plate body to the middle of the stock plate body. The invention further relates to a stock rack for heat treatment and high pressure gas quenching. The stock rack comprises a plurality of the stock plate for heat treatment and high pressure gas quenching; the stock plates are sequentially laminated from bottom to top; the adjacent stock plates are supported through supporting parts; and the heights of the supporting plates are gradually increased from the two ends of the supporting plates to the middles of the supporting plates. The invention also relates to a workpiece arrangement method for heat treatment and high pressure gas quenching. The method adopts the stock plate for heat treatment and high pressure gas quenching. The workpiece density is high at the edges and the workpiece density is low in the middle in the X direction, the Y direction and the Z direction, thus, a temperature fieldduring part cooling is more uniform, and the part heat treatment performance is remarkably improved.

Description

technical field [0001] The invention relates to a method for arranging material plates, material racks and workpieces for heat treatment and high-pressure gas quenching. Background technique [0002] After the parts undergo vacuum heat treatment + high pressure gas quenching, they can obtain certain properties such as hardness and strength. In theory, it is hoped that all parts can achieve consistent performance indicators after the same heat treatment process, so as to ensure stable product quality and reliable performance. This requires that all parts undergo the same heating and cooling process during heat treatment. In the actual manufacturing process, the parts are radiated and heated in a vacuum state. During quenching, the high-pressure and high-speed flow of gas takes away the surface heat of the parts and the rack. Due to the constraints of the rack structure, the temperature field of all parts cannot be exactly the same, so Part performance will always vary. [...

AI Technical Summary

Problems solved by technology

This makes the temperature field of the parts very uneven during the heating and cooling process. On the same shelf, the temperature difference between the parts at the edge and the center is very large, which makes the performance of the parts after heat treatment very different, affecting the quality of the parts. In severe cases, even cause waste

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