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510L steel plate
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High-strength steel plate (high-strength plate) refers to the grade Q460 steel, which has high strength, especially in the normalizing or normalizing and tempering state, which has higher comprehensive mechanical properties. Mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, hoisting machinery, mining machinery and other large welded structural parts.
The rapid development of the automobile industry has played an important role in the development of the national economy and society. However, due to energy shortages, environmental pollution and other issues, the contradictions in the development of the industry have become increasingly prominent. Looking to the future, the development of this industry can only be sustainable if it is built on the background of nature, ecology, energy conservation, and safety.
In this context, the application of automotive lightweight and high-strength steel has become an important development direction. However, as the strength of high-strength steel sheets increases, the traditional cold stamping process is prone to cracking during the forming process, which cannot meet the processing requirements of high-strength steel sheets. Under this circumstance, the hot stamping technology of ultra-high-strength steel plates has been gradually studied in the world-a new process that integrates forming, heat transfer and structural transformation, mainly using the plasticity of the sheet under the state of high-temperature austenite The characteristic of increasing and decreasing yield strength is a process of forming through a mold. However, thermoforming requires in-depth research on process conditions, metal phase transition, and CAE analysis technology. However, this technology is monopolized by foreign manufacturers and the domestic development is slow.
According to survey statistics, the application of high-strength steel for some automobile brands is expanding, and the application of high-strength steel for the body frame of some models has reached 90%. According to research conducted by the Energy Department of the US Institute of Iron and Steel, even if high-strength steel is reduced in value, it is still much more difficult to stretch than traditional cold plates. The ductility of high-strength steel is only half that of ordinary steel.
When the material is stamped and formed, it becomes hard, and different steels have different degrees of hardening. Generally, high-strength low-alloy steel only has a slight increase of 20MPa, which is less than 10%. Note: The yield strength of duplex steel has increased by 140MPa, which is an increase of more than 40%! During the forming process, the metal becomes completely different, unlike before the stamping process. After these steels are stressed, their yield strength increases a lot. The higher yield stress of the material plus work hardening equals a great increase in flow stress. Therefore, cracking, springback, wrinkling, workpiece size, mold wear, micro welding wear, etc. have become the focus of problems in the high-strength steel forming process.
Based on the characteristics and characteristics of high-strength steel, if the metal flow and friction cannot be changed, the cracking and uneven texture of high-strength steel (HSS) may cause the scrap rate of parts to rise. The material’s high kilopound force per square inch (KSI) (a unit of measurement of deflection force), increased resilience, tendency to work hardening, and operation at elevated molding temperatures are all factors for the mold challenge.
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Shandong Chengming Steel Co.,Ltd
Our company supplies cold/hot-rolled stainless steel sheets,stainless steel bars ,stainless steel coil stainless steel pipes,lead plate,bearing steel,spring steel,steel plate pile,tank plate,alloy steel plate,weather resistant steel plate and wear resistant plate to many steel factories from at home and abroad, including Shanxi Taigang Iron& Steel CO,.LTD (TISCO) Zhangjiagang Pohang (ZPSS), Shanghai Krupp, Ningbo Baoxin and steel factories in Taiwan area, Mainland Chinese and foreign countries and regions.
Our annual capacity is 25, 000 tons. The Annual Domestic Sale is 20 million, Annual Exported Sale about 12 million dollars.Our products supplied to more than 20 countries, such as Indonesia, Spain, Japan, Korea, Vietnam, Italy, Israel,Australia, Malaysia, Brazil, Pakistan, U. A. E, Peru, India etc. Good quality has been getting more and more prise from buyers at home and abroad.Our long-term business lines are 304 .202, 201 .430.409L, 304L, 316L, 309S and 310S, Finish: 2B ,BA ,NO.1 NO.4 ,HL, NO.8 and so on . For the sheets and coils,the thickness ranging from 0.3mm to 100mm.For the bars,the diameter ranging from 1mm to 300mm.For the pipes ,we have seamless pipe and weld pipe. Meanwhile, our company is also engaged in the long-term supply of homemade & imported medium and thick plates,galvanized or carbon
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Steel Sheet pile Description The steel sheet pile is a kind of steel structure with a linkage device on the edge, and this linkage device can be freely combined to form a continuous and compact steel structure with a retaining wall or a water retaining wall. The steel sheet pile is a type of steel with a lock. Its cross-sections are straight, trough and Z-shaped. There are various sizes and interlocking forms. The common ones are Larsonian, Lakwanaian and so on. Its advantages are: high strength, easy to penetrate hard soil; can be constructed in deep water, if necessary, add diagonal support to become a cage. It has good waterproof performance; it can be formed into cofferdams of various shapes as required and can be reused many times. Therefore, it has a wide range of uses. classification Steel sheet pile products are classified into cold-formed thin-walled steel sheet piles and hot-rolled steel sheet piles according to the production process. (1) There are two types of cold-formed steel sheet piles: non-bite type cold-formed steel sheet piles (also called channel plates) and bite type cold-formed steel sheet piles (divided into L-shaped, S-shaped, U-shaped, and Z-shaped) . Production process: Use thinner plates (commonly used thickness 8mm ~ 14mm) to be continuously rolled and formed in the cold bending unit. Advantages: less investment in the production line, lower production cost, flexible control of product size. Disadvantages: the thickness of each part of the pile body is the same, the section size cannot be optimized, which leads to an increase in steel consumption, the shape of the lock part is difficult to control, the joint is not tightly buckled, and the water cannot be stopped, and the pile body is easy to tear during use. (2) Hot-rolled steel sheet piles Hot-rolled steel sheet piles in the world mainly include U-shaped, Z-shaped, AS-shaped, H-shaped and dozens of specifications. The production, processing and installation processes of Z-type and AS-type steel sheet piles are relatively complicated, and are mainly used in Europe and America; U-type steel sheet piles are mainly used in China. Production process: It is formed by high temperature rolling by a section steel rolling mill. Advantages: standard size, superior performance, reasonable cross-section, high quality, and tight water barrier for the lock bite. Disadvantages: technical difficulty is relatively high, production cost is relatively high, specification series are not flexible. In engineering construction, the application range of cold-formed steel sheet piles is relatively narrow, and most of them are used as supplementary materials for applications. Hot-rolled steel sheet piles have always been the leading product for engineering applications. Based on the many advantages of steel sheet piles in construction operations, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Management Committee issued the national standard for "Hot Rolled U-shaped Steel Sheet Pile" on May 14, 2007, and on December 1, 2007 Formally implemented. At the end of the 20th century, Maanshan Iron & Steel Co., Ltd. produced more than 5,000 tons of U-shaped steel sheet piles with a width of 400mm with the introduction of the universal rolling mill production line from abroad. The U-shaped steel sheet piles were successfully used in the cofferdam of Nenjiang Bridge and the 300,000 tons of Jingjiang New Century Shipyard. Ton shipyard and Bangladesh flood control projects. However, due to the low production efficiency, poor economic efficiency, low domestic demand and insufficient technical experience during the trial production period, continuous production was not possible. According to statistics, the annual consumption of steel sheet piles in my country remains at about 30,000 tons, accounting for only 1% of the world’s total, and it is limited to permanent projects such as the construction of some ports, wharves, and shipyards, as well as the construction of bridges, cofferdams, and foundation pit support Temporary works. The cold-formed steel sheet pile is continuously rolled and formed by the cold-formed unit, and the side lock can be continuously overlapped to form a steel structure of the sheet pile wall. The cold-formed steel sheet pile is made of thinner plates (commonly used thickness is 8mm-14mm) and processed by cold-formed forming units. The production cost is lower and the price is cheap, and the fixed-length control is more flexible. However, due to the simple processing method, the thickness of each part of the pile body is the same, the cross-sectional size cannot be optimized, which leads to an increase in steel consumption; the shape of the lock part is difficult to control, the joint is not tightly buckled, and the water cannot be stopped; limited by the capacity of cold bending processing equipment, It can produce low-strength ste
The steel sheet pile is a kind of steel structure with a linkage device on the edge, and this linkage device can be freely combined to form a continuous and compact steel structure with a retaining wall or a water retaining wall.
Stainless steel round steel belongs to the category of long products and bars. The so-called stainless steel round steel refers to a long product with a uniform circular cross section
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