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Quenching for material rack by high pressure gas

A high-pressure gas and material rack technology, applied in the field of heat treatment, can solve the problems that can only be used for heating, hinder the flow of quenching gas, and affect the cooling effect of parts, so as to meet cost requirements, reduce temperature differences, and improve flow uniformity. Effect

Inactive Publication Date: 2007-06-20
SHANGHAI AUTOMOBILE GEAR WORKS
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  • Abstract
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Problems solved by technology

However, this patent only improves the uniformity by changing the heating area, and the multi-layer charging will cause the airflow direction to change from turbulent flow to turbulent flow, which will even hinder the flow of quenching gas and affect the gas quenching effect. At the same time, the increase in surface area will also affect The cooling effect of the parts, so this patent cannot be applied to quenching, only to the heating process

Method used

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  • Quenching for material rack by high pressure gas

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Embodiment Construction

[0010] As shown in FIGS. 1 and 2 , the present invention includes: a support plate 1 , a support rod 2 , a support thimble 3 , and a shelf 4 . The connection method is: the shelf 4, the support plate 1, and the support rod 2 are screwed together to form the frame of the material rack; when used for shaft parts, the support thimbles 3 are directly cast on the support plate 1, evenly distributed, and relatively The distance between adjacent supporting thimbles 3 is the sum of the maximum outer diameter of the shaft parts 8 plus 30~40mm, and the supporting thimbles 3 fix the shaft parts 8 with the smallest area; there are holes 7 for placing the shaft parts 8 on the shelf 4, and The supporting thimbles 3 are correspondingly distributed; when used for disk parts 9, add movable sleeves 5 and fixed pins 6, and the fixed pins 6 are directly cast on the support plate 1, evenly distributed, and are used to fix the disk parts 9 from the inner diameter, adjacent The distance between the ...

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Abstract

A workpiece supporting frame for high-pressure gas quenching is composed of supporting plate, supporting rod, supporting needles and shelves, which are connected together by spiral threads to form a multi-layer frame. Some additional elements are used for special workpieces, such as axle, disk, etc. Its advantage is high efficiency of heat treatment.

Description

technical field [0001] The invention relates to a material rack for parts heat treatment, in particular to a high-pressure gas quenching material rack. It belongs to the technical field of heat treatment. Background technique [0002] At present, with the gradual improvement of heat treatment deformation control and quenching uniformity requirements of parts, and the promotion of vacuum heat treatment technology, the use of high-pressure gas quenching technology has gradually become popular. High-pressure gas quenching mainly realizes the change of hardenability through the cooling capacity of different gases and the change of quenching pressure; stirring can only improve the gas convection intensity, but cannot change the hardenability of the gas. Therefore, how to achieve the uniformity of gas stirring is very important to improve the uniformity of quenching of high-pressure gas. [0003] It is found through document retrieval of the prior art that the Chinese patent app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/62
Inventor 马森林沈玉明
Owner SHANGHAI AUTOMOBILE GEAR WORKS
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