News

  • Time axis of stainless steel development in China

    The development and progress of China’s stainless steel industry is relatively late. From the founding of the people’s Republic of China to the reform and opening up, the demand for stainless steel in China is mainly based on the cutting-edge use of industry and national defense. Afte...
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  • Characteristics and performance of various stainless steel valves

    Stainless steel valve is made of stainless steel, with handle, turbine, pneumatic, electric and other transmission structures, flexible and light switch. Compact structure, light weight, easy insulation and installation. Connection mode: welding, thread and flange are available for users to choos...
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  • How to deoxidize stainless steel casting

    Stainless steel casting generally needs two deoxidation, primary deoxidation and final deoxidation. Deoxidizer and deoxidation process should be reasonable to ensure the quality of stainless steel castings. 1. For deoxidation in stainless steel smelting stage, manganese (electrolytic manganese sh...
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  • Stainless steel turned out to be an accident

    Stainless steel was accidentally discovered in England in 1912. Harry Brearley invented stainless steel, but this was not his original intention. It was a completely unexpected product. Harry Brearley is working for gun manufacturers and trying to find more wear-resistant materials. The inner dia...
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  • Application and principle of stainless steel Strainer

    When the stainless steel Strainer works, the water to be Strainered enters from the water inlet, flows through the Strainer screen, and enters the pipeline required by the user through the outlet for process circulation. The particle acrobatics in the water is intercepted inside the Strainer scre...
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  • Common knowledge of flange pipeline: why stainless steel flange rusts?

    Stainless steel flange is deeply loved by people because of its beauty, corrosion resistance and not easy to be damaged. However, when there are brown rust spots on the surface of stainless steel flange, people will be surprised: why does “stainless steel” rust? If it does, is it stil...
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  • Detailed explanation of the way of connecting pipes with stainless steel flanges

    Stainless steel flange is often used in pipeline engineering. The material is generally high in hardness and is mostly formed by quenching, so the toughness is general, so it is suitable to be used in pipeline application. The core hardness of stainless steel flange is generally only more than 30...
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  • Maintenance of stainless steel valve elbow

    In the pipeline system, elbow is a pipe fitting that changes the direction of the pipeline. According to the angle, there are three most commonly used elbows: 45 ° and 90 ° 180 °, and other abnormal angle elbows such as 60 ° are also included according to the needs of the project. Elbow materials...
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  • What are the differences between stainless steel 304 and 202?

    1. What kind of steel is stainless steel? Stainless steel is a type of steel. Steel refers to steel that contains less than 2% carbon (C), and iron is more than 2% . The addition of chromium (Cr), nickel (Ni), manganese (Mn), silicon (Si), titanium (Ti), molybdenum (Mo) and other alloying element...
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  • Factors affecting dimensional accuracy of precision castings

    In general, the dimensional accuracy of precision castings is affected by many factors, such as casting structure, casting material, mold making, shell making, roasting, pouring and so on. Unreasonable setting and operation of any link will change the shrinkage rate of castings, resulting in devi...
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  • Methods and technological problems of improving the quality of stainless steel precision casting

    Stainless steel precision casting first makes the electrode of the required blank, and then uses the electrode corrosion mold to form a cavity. Then cast wax by casting method to obtain the original wax mold. Brush the wax mold with high temperature resistant liquid sand layer by layer. After the...
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  • Repair procedure of precision casting wax mold

    A、 Process operation: 1. When repairing any kind of precision casting wax mold, wax repairers should first find out which part to repair. 2. Check whether there are bubbles, concavity, deformation and other defects in the wax mold. If any problems are found, inform the wax shooter in time to avo...
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