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Tianjin hardware products manufacturing and processing stainless steel is widely used

Tianjin hardware products manufacturing and processing stainless steel is widely used

source network release time: 12:02:59 this classification information is released by users

Tianjin Jingzhou stainless steel products: stainless steel products manufacturing and processing, hardware products manufacturing and processing

the transportation industry is an important industry among the 13 downstream industries of stainless steel, accounting for more than 10% of the consumption structure of stainless steel, and the automobile industry is an indispensable part of the transportation industry. Therefore, it has an important influence on the supply-demand relationship of stainless steel materials

since the early 1970s, the use of stainless steel in automobiles has increased significantly; After the mid-1990s, the consumption of stainless steel per vehicle gradually increased from about 10kg in the 1980s to 20 ~ 30kg, while the consumption of stainless steel per vehicle in the United States averaged more than 40kg. Stainless steel not only has corrosion resistance, but also has good physical properties and surface quality, so it is widely used in automobile manufacturing. According to different application parts, it can be roughly divided into the following categories: stainless steel for exhaust system, stainless steel for fuel tank, stainless steel for frame, stainless steel for automobile parts and decorative stainless steel

1. Stainless steel for exhaust system: exhaust system is the most widely used component of automotive stainless steel, accounting for more than half of the total amount from product design to automotive stainless steel application, and 80% of it is ferritic stainless steel. 409L, 436l, etc. are commonly used stainless steel grades. With the improvement of automobile engine performance, the temperature of the exhaust gas from the engine is getting higher and higher. Therefore, the automobile industry requires that the components of the exhaust system have excellent heat resistance and corrosion resistance, and also meet the requirements of automobile lightweight. Ferritic stainless steel with low cost, good oxidation resistance and thermal fatigue properties is naturally popular, and the proportion of use will further increase

2. Stainless steel for fuel tanks: stainless steel fuel tanks have excellent corrosion resistance and good formability in addition to no risk of fuel leakage, and can omit or simplify the coating process. One reason is that they are more and more used in the development of cutting-edge products and processes, and are also easy to recycle. Therefore, stainless steel is another important choice of steel for automotive fuel tanks in addition to coating plain carbon steel. Affected by the cost and stress corrosion problems, more and more stainless steels for fuel tanks have shifted from traditional austenitic stainless steels (such as SUS304L) to ferritic stainless steels, such as jfe-sx1

3. Stainless steel for frame: the combination of the design of combined automobile frame and the excellent performance of stainless steel materials can produce vehicles with particularly light weight, good impact resistance, high safety and reliability and long service life, because stainless steel can not only ensure high enough strength, weight ratio, but also good plasticity, toughness, formability and weldability, and can be completely recycled. 409L, 3Cr12 and 304L are commonly used stainless steel grades

4. Automobile stainless steel parts: mainly stainless steel sealing rings, heat exchangers and fasteners. The stainless steel sealing ring has become the main substitute of the traditional asbestos sealing ring. It is mainly made of stainless steel as the base plate covered with rubber. The stainless steel base plate is mostly SUS301, which has the advantages of high temperature resistance, corrosion resistance and good elasticity. The use of stainless steel plate heat exchanger is mainly to improve the cooling efficiency, compact structure, and the materials are SUS304, SUS430, and SUS409L. Stainless steels commonly used for fasteners include sus410, SUS304, SUS316, sus430j1l, suh660, etc

5. Stainless steel for decoration: stainless steel has been used as automobile decoration materials for a long time, and its scope of use is expanding day by day. Stainless steel fillets, antennas, wheel covers, etc. are used on small cars, and stainless steel is also used on handrails, safety railings, and handlebars of large buses and vehicles. In order to reduce costs, the rear-view mirrors are mainly made of sus430j1l stainless steel, and the rear-view mirrors of some luxury cars are made of sus436j1l stainless steel; Most car wipers use SUS430, SUS304, SUS301, etc; The headlamp retainer adopts SUS430 and other steel grades. Stainless steel is also used for safety devices on cars. For example, the safety belt tightener adopts SUS301 stainless steel, the airbag sensor and booster pump mainly use SUS304 and Sus 304L stainless steel according to the national conditions of our country, and the ABS induction ring adopts sus434, SUS444 and other steel grades

in 2014, the national automobile production and sales were 23.7228 million and 23.4919 million respectively, with a year-on-year increase of 7.3% and 6.9%. In this month, the production and sales of automobiles have completed 15.1824 million and 15.0172 million respectively, and the annual sales volume is likely to reach 25.13 million, including 860000 exports, with a growth rate of about 7%. As an important downstream bank of stainless steel, this kind of fan housing first adopts the 2-D and 3-axis braiding technology to manufacture the braided preform industry. The increase in sales volume will definitely drive the demand for stainless steel materials. It is predicted that the demand for stainless steel in the automotive industry will increase from 587300 tons in 2014 to 654900 tons

the automobile industry is a stainless steel application field with rapid development at present. Due to the development of social economy and the improvement of people's living standards, the market demand for high-grade vehicles has greatly increased. Considering the costs of manufacturing, maintenance and energy consumption, stainless steel cars are much lower than aluminum alloy cars and carbon steel cars. Therefore, stainless steel cars are the most economical cars and have great development prospects

at the same time, the development of stainless steel in other transportation industries is also in full swing. Stainless steel has also been widely adopted by public transportation vehicles such as buses, subways and high-speed railway vehicles, which makes the use of stainless steel in automobile manufacturing and other transportation industries show a worldwide expansion trend and have a great potential market

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