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Hot rolling pickle sheet with high yield ratio

A technology of hot-rolled pickling and high yield ratio, applied in the field of hot-rolled pickled plates, to achieve the effects of eliminating yield platforms, reducing development costs, and shortening development cycles

Inactive Publication Date: 2012-01-11
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, hot-rolled pickling plates are gradually being applied to some imported car models in China, such as FAW Jetta, Audi series, Mazda 6, etc. Washboard is still blank

Method used

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  • Hot rolling pickle sheet with high yield ratio
  • Hot rolling pickle sheet with high yield ratio
  • Hot rolling pickle sheet with high yield ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A variety of parts have been stamped and loaded into the vehicle, and the results show that GQRS can completely replace the ordinary cold plate, and it shows good mechanical properties and stamping performance. At present, the cabs of FAW J5 series trucks use ordinary cold plates St13 and St14. We applied the hot-rolled pickled plates with high yield ratio to this vehicle. Firstly, the chemical composition and mechanical properties of the materials were designed. The production process is under control. In addition, under a certain tensile strength, it is composed of the following chemical elements by weight ratio (Wt%): C 0.04, S 0.007, P0.015, Mn0.18, Si0.02, Als 0.040. In order to obtain a higher yield ratio, the rolling process strictly controls various conditions to obtain relatively fine grains, and the metallographic structure is ferrite plus a small amount of pearlite.

[0014] The hole expansion test and cupping test of simulated forming prove that GQRS materi...

Embodiment 2

[0022] With the help of CAE analysis means, the whole process of sheet metal stamping forming is simulated for the designed parts, so as to judge the rationality of product design and stamping process plan. The analysis of the formability and structural strength of the same parts under old and new materials shows that the developed GQRS can completely replace the traditional cold-rolled sheet, and shows good formability and mechanical properties, and can achieve the purpose of reducing weight to a certain extent .

[0023] Firstly, the CAE simulation analysis of the suspension reinforcement plate with relatively simple deformation and low formability requirements was carried out. The results show that both materials can meet the forming conditions mechanically, and can be completely replaced. After stamping with GQRS, they have been loaded and tested run.

[0024] Afterwards, CAE simulation analysis was carried out on beam parts with more complex deformation. Under the same b...

Embodiment 3

[0027] The hot-rolled pickled plate with high yield ratio is composed of the following chemical elements by weight ratio (Wt%): C 0.06, S 0.010, P 0.020, Mn 0.35, Si 0.03, Als 0.060.

[0028] A variety of parts have been stamped and formed, and loaded and run. The results show that the performance is good. GQRS can completely replace the ordinary cold plate, and it shows good mechanical properties and stamping properties. Table 8 shows some complex and typical stamping parts processed by this kind of high yield ratio hot-rolled pickling plate.

[0029]

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Abstract

The invention provides a hot rolling pickle sheet with high yield ratio. The hot rolling pickle sheet with high yield ratio is characterized by comprising the following chemical ingredients of 0.04-0.06wt% of C, 0.007-0.010wt% of S, 0.015-0.020wt% of P, 0.15-0.35 wt% of Mn, 0.02-0.03 wt% of Si, 0.030-0.060 wt% of Als. The invention solves a problem of vehicle body weight losing, increases structural strength and processing performance, reduces production costs, and enhances vehicle body strength and security.

Description

Technical field [0001] The present invention involves a high -tech -and -strong hot -rolled acid washing board, which is a technical field that is preferred to design the metal plate of the J5 series cab. Background technique [0002] The rapid development of the global automotive industry and the fierce market competition put forward increasing requirements for the high performance and low cost of automotive metal plates.Energy saving, consumption reduction, safety, and economy have become one of the essential conditions for products to have vitality.Hot -rolled acid washing plate is a type of emerging products for the development of the production of the board belt. It is a middle product between hot rolled plates and cold rolled plates. Good surface quality, thickness tolerance, and processing performance make it some hot rolled rolledThe ideal and economic alternatives of the board and cold rolled plate.With the continuous development of rolling technology technology, the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04
Inventor 常连霞应善强张连玉张建振李凤华朱士凤徐香秋苏瑛徐杰
Owner CHINA FIRST AUTOMOBILE
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