Thin layer carbonitriding heat treatment process for lightweight automobile clutch main boards

Abstract

The invention provides a thin layer carbonitriding heat treatment process for lightweight automobile clutch main boards. The thin layer carbonitriding heat treatment process includes the steps that a,material stacking is conducted; b, workpieces are put in a furnace to be subjected to heat treatment; c, the workpieces are taken out of the furnace, washed and dried, the workpieces are sent into awashing machine, and quenching oil on the workpieces is washed away; d, quenching inspection is conducted, and the surface hardness and infiltrated layer depth of the workpieces which are completely quenched are inspected; e, pressure leveling and tempering treatment are conducted; and f, tempering inspection is conducted, and the surface hardness, infiltrated layer depth and deformation degree ofthe workpieces which are completely tempered are inspected. The thin layer carbonitriding heat treatment process has the beneficial effects that the product quality can be stably improved, deformation is reduced, and riveting cracks are completely eradicated.

Description

technical field [0001] The invention relates to the technical field of heat treatment technology, in particular to a thin-layer carbonitriding heat treatment technology for a light-duty automobile clutch main board. Background technique [0002] The clutch main board of a light vehicle is an important part of the vehicle clutch. It is formed by stamping a low-carbon steel cold-rolled sheet. Its shape is complex, the grooves are uneven, and it contains many special-shaped holes. In the prior art, the production quality stability of the heat treatment process of the clutch main board of the light-duty automobile is poor, and it often cannot fit into the mold during assembly, or cracks during assembly and riveting. The deformation of the workpiece has been improved by using QPQ process, soft nitriding (nitrogen-carburizing) process, etc., but the carburized layer cannot meet the requirements, which affects the overall strength and stiffness of the workpiece. Contents of the i...

AI Technical Summary

Problems solved by technology

In the prior art, the heat treatment process of the clutch main board of light-duty vehicles has poor production quality stability, and often cannot fit into the mold during assembly, or cracks during assembly and riveting

Using QPQ process, soft nitriding (nitrogen-carburizing) process, etc. to treat the deformation of the workpiece has improved, but the carburized layer does not meet the requirements, which affects the overall strength and stiffness of the workpiece.

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