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Cold-rolled steel sheet for automobile-seat-adjusting toothed plate produced through precision stamping and manufacturing method of cold-rolled steel sheet

A car seat and precision stamping technology, which is applied in the field of cold-rolled steel plates, can solve the problems of low spheroidization rate, unsuitability for high-speed precision stamping, and low dimensional accuracy, and achieve good performance uniformity, shorten annealing time, and reduce energy consumption. Effect

Active Publication Date: 2016-03-16
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a precision stamping cold-rolled steel plate for automobile seat adjustment tooth plate and its manufacturing method, to solve the problem of low dimensional accuracy, low spheroidization rate, and Technical problems not suitable for high-speed precision stamping

Method used

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  • Cold-rolled steel sheet for automobile-seat-adjusting toothed plate produced through precision stamping and manufacturing method of cold-rolled steel sheet
  • Cold-rolled steel sheet for automobile-seat-adjusting toothed plate produced through precision stamping and manufacturing method of cold-rolled steel sheet
  • Cold-rolled steel sheet for automobile-seat-adjusting toothed plate produced through precision stamping and manufacturing method of cold-rolled steel sheet

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with Examples 1-6 and Comparative Example 1—disclosed in Chinese Patent Application 200780004015.3, and Comparative Example 2—disclosed in Chinese Patent Application 200780004180.9, as shown in Tables 1 to 4.

[0048] Table 1 Chemical composition of the present invention (% by weight), the balance is Fe and unavoidable impurities.

[0049]

[0050] According to the requirements of the material composition design of the present invention, pre-desulfurization of molten iron is adopted, combined blowing at the top and bottom of the converter, bottom blowing of Ar at the Ar blowing station (or LF furnace temperature rise) ensures that the stirring time is longer than 5 minutes, fine-tuning of the composition of the RH furnace, and vacuum cycle degassing Treatment, to ensure that the RH pure degassing time is greater than 15 minutes, and at the same time feed an appropriate amount of iron-calcium wire, ...

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Abstract

The invention relates to a cold-rolled steel sheet for an automobile-seat-adjusting toothed plate produced through precision stamping and a manufacturing method of the cold-rolled steel sheet, and solves the technical problem that a cold-rolled steel sheet for an automobile-seat-adjusting toothed plate prepared through precision stamping in the prior art is low in size precision and relatively low in spheroidization rate, and is not suitable for high-speed precision stamping. The cold-rolled steel sheet comprises chemical components, by weight: 0.38-0.45% of C, 0.20-0.30% of Si, 0.70-0.90% of Mn, no more than 0.015% of P, no more than 0.005% of S, 0.80-1.10% of Cr, 0.05-0.30% of Mo, 0.015-0.050% of Alt, and no more than 0.0080% of N, with the balance being iron and inevitable impurities. The cold-rolled steel sheet is used for high-speed precision stamping to produce components, such as an automobile-seat-adjusting toothed plate.

Description

technical field [0001] The invention relates to a cold-rolled steel plate used for precise stamping, in particular to a cold-rolled steel plate for precision stamping automobile seat adjustment tooth plates and a manufacturing method thereof. Background technique [0002] Hot-rolled strip steel is mainly produced by hot rolling mills. After spheroidizing annealing, the strength and plasticity are well matched. It is widely used in the fine blanking industry to manufacture automobiles, motorcycles, electric bicycles, tractors, hardware, home appliances, switch appliances, Sewing machines, cameras, clocks, instruments, communication electronics and other precision parts. Traditional precision parts processing methods have many procedures and poor precision, and are generally completed by general punching, machining, forging, casting and powder metallurgy processing. After the fine blanking process is adopted, the entire part can be manufactured in one process, which has great...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/22C22C33/04C21D8/02
Inventor 马植甄魏宝民穆海玲
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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