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Brief introduction of Chengdu 304 stainless steel pipe Release time: November 30, 2020 Chengdu 304 stainless steel pipe, 304 stainless steel pipe in the air or chemical corrosion medium can resist corrosion of a kind of high alloy steel, 304 stainless steel pipe has beautiful surface and good corrosion resistance, does not need to go through the surface treatment such as color plating, but play the inherent surface properties of stainless steel, used in many kinds of steel. -
What are the advantages of BOF steelmaking Release time: November 24, 2020 First of all, the top blowing time of converter is not more than one hour. It takes about seven hours for a 300 ton open hearth furnace to make one furnace of steel. Secondly, there are many varieties: oxygen top blown converter can not only make ordinary steel, but also some ordinary low alloy steel. Almost all kinds of steel can be made in open hearth furnace. Due to pure oxygen blowing, the content of harmful gases such as nitrogen and hydrogen in the steel is relatively high, which improves the quality of steel -
How to control the quality of high grade silicon steel casting billet Release time: November 17, 2020 Where is Chongqing stainless steel pipe wholesale market? Wuhan Iron and steel works is a stainless steel pipe manufacturer which produces high grade silicon steel with good quality and large output (annual output of 100000) and a world-class new process flow. Silicon steel is divided into non oriented and oriented. The non oriented silicon steel is rolled in the same direction, which is mainly used for motor. The grain orientation is obtained during the treatment of silicon steel sheet, which is mainly used as silicon steel sheet for transformer. -
Common machining defects of flame quenched stainless steel pipe and its prevention Release time: November 4, 2020 Compared with high frequency quenching stainless steel pipe, the flame quenching device of Sichuan stainless steel pipe is simple and the price is low. Parts such as the end face of small shaft can be heated and quenched by welding machine. -
Output and production process of stainless steel pipe Release time: October 28, 2020 Sichuan stainless steel special shaped pipe -
How to identify the difference between scrap and scrap iron Release time: October 21, 2020 Chengdu stainless steel special-shaped pipe: the identification of waste steel using chemical analysis and spectral analysis is more accurate rhyme. At present, these two methods are mostly used in iron and steel enterprises and mechanical processing departments to test and distinguish the chemical composition of various steel materials and products. Special equipment and instruments and skilled operators are needed. At present, due to the limited conditions of metal recovery departments, it is rarely used in the identification of scrap iron and steel, and most of them are based on work experience, using simple and easy sensory identification and spark identification methods -
Principle of cathode activation and chemical activation for pre nickel plating of stainless steel tube Release time: October 13, 2020 In order to avoid iron, chromium and other metal elements from dissolving into the pre nickel plating tank and causing the instability of the pre nickel plating tank, the anode electrolytic activation was changed to the cathode electrolytic activation, which was set up separately from the pre nickel plating bath. The hydrogen generated from the cathode was used to reduce and destroy the surface oxide film to purify the surface. After the cathode electrolysis activation, the stainless steel is transferred into the pre nickel plating bath immediately without washing, which also achieves good results. However, the time required for transfer should be as short as possible. -
Effect of alloying elements on mechanical properties of Chongqing stainless steel tube after tempering transformation Release time: September 30, 2020 Chongqing stainless steel tube: the influence of alloy elements on mechanical properties of tempering transformation of stainless steel pipe is mainly summarized in several aspects: martensite decomposition in the structure of stainless steel pipe; transformation of retained austenite; recrystallization of ferrite and formation, transformation and aggregation and growth of carbide -
Significance of iron and steel recycling in Chengdu Release time: September 23, 2020 Chengdu Iron and steel market: the iron and steel industry is an important part of the national economy. The amount of steel output of a country indicates the progress and backwardness of the country's industrial level. The recovery and utilization of scrap iron and steel is closely related to the development of iron and steel industry, and it increases with the increase of steel output. The main raw materials of steelmaking are pig iron and scrap steel. In order to save ore and energy and reduce production cost in developed capitalist countries, the utilization of scrap iron and steel resources is emphasized in iron and steel production. With the rapid development of national economy, China's waste iron and steel recycling work is also growing -
Chongqing 304 stainless steel pipe production and production process Release time: September 21, 2020 The output of Chongqing 304 stainless steel pipe is about 8 million tons / year, of which more than 30% is produced by continuous casting machine; the stainless steel tube billet continuously cast in Japan accounts for more than 60% of the total output of stainless steel. There are 79 continuous casters for Chongqing 304 stainless steel tube billet, and the slab is about twice of the square billet. The new type of caster is mainly arc caster. Continuous casting stainless steel includes high nickel austenite, high chromium ferrite and martensitic stainless steel sensitive to crack. -
Chongqing stainless steel accessories report: Steel by chemical composition classification Release time: September 18, 2020 Chongqing stainless steel accessories -
Effect of alloying elements on mechanical properties of Chongqing stainless steel pipe after tempering transformation Release time: September 16, 2020 Chongqing stainless steel pipe fittings: the influence of alloy elements on the mechanical properties of stainless steel pipe tempering transformation is mainly summarized in several aspects: martensite decomposition in the structure of stainless steel pipe; transformation of retained austenite; recrystallization of ferrite and formation, transformation and aggregation and growth of carbides. These four processes are staggered in a temperature range with the increase of tempering temperature. Generally speaking, the existence of alloying elements in stainless steel tubes does not change the general rules and basic characteristics of the four processes, but it shows different effects in different stages.
Chengdu Zhengshang Stainless Steel Co., Ltd 
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