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Manufacturing method for stainless steel plate for sightseeing vehicle

A stainless steel plate and stainless steel technology, which is applied in the field of stainless steel processing, can solve the problems of low product qualification rate, large inventory pressure, and difficulty in the production of stainless steel materials, and achieve the effects of less process volume, improved high temperature performance, and improved corrosion resistance.

Inactive Publication Date: 2017-02-15
SUZHOU DACHENG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult to organize the production of stainless steel materials for vehicles, and the qualified rate of products is relatively low. In order to meet the order contract, a high feed-to-material ratio is required, resulting in a great inventory pressure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing a stainless steel plate for sightseeing vehicles, the composition and mass percentage of the stainless steel plate are: C≤0.03%, Si: 0.9-1.5%, Mn: 0.6-1.5%, Cr: 18-19%, Ni: 5.5-7.5%, N: 0.1-0.22%, Mo: 0.1-0.2%, Cu: 0.1-0.2%, P≤0.04%, S≤0.03%, the rest is Fe and unavoidable impurities; the preparation method includes the following steps:

[0021] (1) Preparation of stainless steel slab: refining the alloy after melting, and forging it into a stainless steel slab at 1000-1200°C; the refining is carried out under the protection of nitrogen;

[0022] (2) Hot rolling: heat the stainless steel slab to 1000-1200°C, keep it warm for 20-40min, and roll it with a hot rolling mill to obtain a stainless steel plate; quickly cool the stainless steel plate to 500-600°C with cold water, and heat it again to 900-1000°C, keep warm for 2-3 hours, quickly cool down to 500-600°C, and cool to room temperature naturally;

[0023] (3) Cold rolling: the pickled stainle...

Embodiment 2

[0027] A method for preparing a stainless steel plate for sightseeing vehicles, the composition and mass percentage of the stainless steel plate are: C≤0.03%, Si: 0.9-1.5%, Mn: 0.6-1.5%, Cr: 18-19%, Ni: 5.5-7.5%, N: 0.1-0.22%, Mo: 0.1-0.2%, Cu: 0.1-0.2%, P≤0.04%, S≤0.03%, the rest is Fe and unavoidable impurities; the preparation method includes the following steps:

[0028] (1) Preparation of stainless steel slab: refining the alloy after melting, and forging it into a stainless steel slab at 1000-1200°C; the smelting is carried out under the protection of nitrogen;

[0029] (2) Hot rolling: heat the stainless steel slab to 1000-1200°C, keep it warm for 20-40min, and roll it with a hot rolling mill to obtain a stainless steel plate; quickly cool the stainless steel plate to 500-600°C with cold water, and heat it again to 900-1000°C, keep warm for 2-3 hours, quickly cool down to 500-600°C, and cool to room temperature naturally;

[0030] (3) Cold rolling: the pickled stainle...

Embodiment 3

[0034] A method for preparing a stainless steel plate for sightseeing vehicles, the composition and mass percentage of the stainless steel plate are: C≤0.03%, Si: 0.9-1.5%, Mn: 0.6-1.5%, Cr: 18-19%, Ni: 5.5-7.5%, N: 0.1-0.22%, Mo: 0.1-0.2%, Cu: 0.1-0.2%, P≤0.04%, S≤0.03%, the rest is Fe and unavoidable impurities; the preparation method includes the following steps:

[0035] (1) Preparation of stainless steel slab: refining the alloy after melting, and forging it into a stainless steel slab at 1000-1200°C; the smelting is carried out under the protection of nitrogen;

[0036] (2) Hot rolling: heat the stainless steel slab to 1000-1200°C, keep it warm for 20-40min, and roll it with a hot rolling mill to obtain a stainless steel plate; quickly cool the stainless steel plate to 500-600°C with cold water, and heat it again to 900-1000°C, keep warm for 2-3 hours, quickly cool down to 500-600°C, and cool to room temperature naturally;

[0037] (3) Cold rolling: the pickled stainle...

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PUM

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Abstract

The invention discloses a manufacturing method for a stainless steel plate for a sightseeing vehicle. The manufacturing method includes the steps of manufacturing of a stainless steel slab, hot rolling and cold rolling. According to the manufacturing method, through hot rolling, cooling, re-heating and re-cooling, the strength of the stainless steel plate is improved; and meanwhile, the process quantity is slightly changed, the increased cost is quite low, and the qualified rate is increased.

Description

technical field [0001] The invention relates to a preparation method of a stainless steel plate for a sightseeing vehicle, belonging to the technical field of stainless steel processing. Background technique [0002] The materials used for passenger cars and subway vehicles are mainly aluminum alloy and stainless steel. With the continuous enhancement of people's awareness of safety and environmental protection, stainless steel is becoming more and more popular as a car body material. Stainless steel used as car body material has the characteristics of high strength, high corrosion resistance, good plate shape flatness, excellent processing performance and fire prevention. [0003] In actual production, due to the different chemical composition of each batch of steel, especially the nitrogen content, the same quenched and tempered rolling will have different properties, so it is necessary to adjust the reduction of quenched and tempered rolling according to the smelting com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/44C21D8/02C22C33/04
CPCC21D8/0226C22C33/04C22C38/001C22C38/02C22C38/04C22C38/42C22C38/44
Inventor 夏钢方芳方宁陈牧遥方天翼陈斌何迎春宋杨罗兵
Owner SUZHOU DACHENG ELECTRIC TECH CO LTD