Quenching process and structure of rolled sheet

Abstract

The invention discloses a quenching process and a structure of a rolled sheet, and relates to the field of rolled sheet manufacturing. The quenching process comprises the following steps that S1, a raw material is cut off to obtain a product blank; S2, the blank enters a first-section quenching furnace to be heated, then the blank is taken out, and punching, two-end short cone rolling and two-end treatment are conducted on the blank; and S3, the formed blank is put into a second-section quenching furnace to be heated to AC3 or 50 DEG C above AC3, heat preservation is conducted, then the blank is taken out, the blank is put into quenching clamping teeth to be formed, oil cooling is conducted, and therefore the needed metallographic structure and quenching hardness are obtained, the forming time is shortened, the production efficiency and quality of rolled sheets are improved, and production energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of rolling sheet manufacturing, in particular to a quenching process and structure of a rolling sheet. Background technique [0002] The few leaf springs with two levels of rigidity solve the problem of the natural vibration frequency of the heavy-duty vehicle when it is empty or fully loaded, and effectively improve the comfort of the vehicle when it is empty or fully loaded. However, in the trailer industry, due to the widespread promotion and application of lightweight vehicles, the weight of the vehicle is very light, while the weight of the full load increases, so there is a large gap between empty and full load. If the design of the two-stage stiffness is concerned, the empty The thickness of the full-load plates varies greatly. The main spring plates are very thin, while the secondary springs must bear the full load, so the design is very thick, which makes the plate springs not clamped tightly, resulting in th...

AI Technical Summary

Problems solved by technology

However, in the trailer industry, due to the widespread promotion and application of lightweight vehicles, the weight of the vehicle is very light, while the weight of the full load increases, so there is a large gap between empty and full load. If the design of the two-stage stiffness is concerned, the empty The thickness of the full-load plates varies greatly. The main spring plates are very thin, while the secondary springs must bear the full load, so the design is very thick, which makes the plate springs not clamped tightly, resulting in the breakage of the secondary springs; If the gap of full load is too large, it will also cause the impact of the secondary spring on the main spring.

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