A production process of large steel sheet material for commercial vehicle clutch skeleton

Abstract

The invention discloses a production process of a commercial vehicle clutch framework big steel sheet material. The process comprises the following steps: (1) selecting a blank material; eliminating an oxide layer from the surface of the blank material; (2) performing annealing heat treatment on the blank material, i.e., firstly heating to eliminate moisture and oil stain on the surface of a steelbelt; ensuring the vacuum degree in a furnace; then charging protection gas; heating to a recrystallization temperature region; performing heat insulation for heat treatment so that the grain size isrecovered; finally, lowering the temperature of the blank material through a fast cooling process, thus obtaining a material subjected to heat treatment ; (3) performing cold rolling on the materialsubjected to heat treatment to obtain the clutch framework big steel sheet material. The production process has the advantages that most work procedures can be removed or reduced; the production defects in a current stage are avoided; meanwhile, a great amount of labor can be liberated; the production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of metal heat treatment and pressure processing, in particular to a production process of a commercial vehicle clutch frame large steel sheet material. Background technique [0002] The large steel plate material of the commercial vehicle clutch frame itself is made of imported C75S material, which is first stamped and formed and then quenched and tempered. This production process is to achieve the heat resistance of the parts when they are operated at high temperatures in commercial vehicles. [0003] This process is a normal manufacturing method in the automotive industry, but due to the complexity of the parts, they are often deformed after heat treatment, resulting in the final flatness of the parts not meeting the requirements for use, and abnormal noise will be generated during the operation of commercial vehicles, and they are easy to wear In order to avoid the occurrence of this situation, the manufa...

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Problems solved by technology

[0003] This process is a normal manufacturing method in the automotive industry, but due to the complexity of the parts, they are often deformed after heat treatment, resulting in the final flatness of the parts not meeting the requirements for use, causing abnormal noise during the operation of commercial vehicles, and easy to wear In order to avoid the occurrence of this situation, the manufacturer heat-treated the parts and then heat-set the mold before they can be used on commercial vehicles. First, the material is stamped, then heat-treated, and then heat-set, which greatly increases the cost and labor, and the process is cumbersome. Difficult to control production accuracy

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