Low-silicon cold rolled precision strip steel for copper-lead bearing steel back and production method thereof

A bearing bush and steel back technology, applied in the direction of metal rolling, metal rolling, rolling mill control devices, etc., can solve problems such as production process difficulties, introduction of bimetallic bond strength performance parameters, increase in material costs, etc., to achieve size and uniform distribution, excellent cohesiveness, and the effect of reducing production costs

Inactive Publication Date: 2010-07-28
武汉钢铁有限公司
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

However, adding these microalloying elements not only increases the cost of the material, but also brings difficulties to the control of the production process
Moreover, neither of these two patent documents gives a corr

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  • Low-silicon cold rolled precision strip steel for copper-lead bearing steel back and production method thereof

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Embodiment Construction

[0045] Below in conjunction with accompanying drawing and specific embodiment, cold-rolled precision steel strip of the present invention and production method thereof are described in further detail:

[0046] Table 1 lists the chemical composition weight percentages of low-silicon cold-rolled precision steel strips for copper-lead bearing bush steel backs in Examples 1-6 of the present invention (the balance is Fe and unavoidable impurities).

[0047] Table 1: The chemical composition weight percentage of steel strip in embodiment 1~6

[0048] Example number

[0049] The production method of the low-silicon cold-rolled precision steel strip for the copper-lead bearing bush steel back described in the above-mentioned embodiments 1 to 6 is as follows: an industrial converter with a capacity of 80 tons is blown at the top and bottom, and the deep desulfurization technology of molten iron is adopted to make the weight percentage of S in the molten iron ≤0.005, set the t...

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Abstract

The invention discloses low-silicon cold rolled precision strip steel for copper-lead bearing steel back and a production method thereof. The strip steel comprises the following chemical components in percentage by weight: 0.09 to 0.15 percent of C, less than or equal to 0.01 percent of Si, 0.25 to 0.55 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 of S, 0.02 to 0.06 percent of Al, and the balance of Fe and inevitable impurities. The production method comprises the steps of molten iron desulfuration, refining in a converter, argon blowing, continuous casting, slab heating, hot continuous rolling, laminar cooling, coiling, acid cleaning, cold rolling, whole hydrogen cover annealing, levelling, finishing and the like. By detecting the comprehensive mechanical property of the strip steel, the strip steel has the advantages of high strength, high hardness, excellent cohesiveness and high surface accuracy; and the method has the advantages of simple production process and low production cost.

Description

technical field [0001] The invention relates to cold-rolled strip steel, in particular to a low-silicon cold-rolled precision strip steel for copper-lead bearing bush steel back and a production method thereof. Background technique [0002] Cold-rolled strip steel is a special steel backing steel used to make copper-lead composite bearing bushes such as crankshaft main bushes and connecting rod bushes of various automobile engines. It supports the bearing bushes and affects the fatigue strength and service life of the bearing bushes. essential material. The production process of bearing bushes of different material types is also different, and the requirements for cold-rolled strip steel are also different. Generally, the production process of copper-lead bearing bush is as follows: shearing of cold-rolled strip steel → roughening of cold-rolled strip steel → cloth copper-lead alloy powder on the rough surface of cold-rolled strip steel → sintering at about 850 °C → rolling...

Claims

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Application Information

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IPC IPC(8): C22C38/06C21C5/30B22D11/16B21B1/46B21B37/74B21B37/16C21D9/663
Inventor 王立辉陈宇彭涛田德新林承江嵇伟斌
Owner 武汉钢铁有限公司
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