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How can I determine the cooling water flow of square billet mold for special steel?
- Determine the cooling water flow rate according to the cooling water flow rate. The cooling water amount of mould W can be calculated according to the following formula: W=0.0036FV, W - cooling water of mould, m3/h;F - total area of mold water gap, mm2;V - the velocity of cooling water in the water seam, m/s, for the billet mold, the flow speed should be greater than 6m/s, generally take 6~9m/s.s
What's the difference between special steel and ordinary steel?
- Compared with ordinary steel, special steel has higher strength and toughness, physical properties, chemical properties, biocompatibility and process performance.s
What is the difference between general steel and special steel?
- Special steel: it is an important symbol to measure whether a country can become a steel power. It is the main steel used in most industries such as machinery, automobile, military industry, chemical industry, household electrical appliance, shipping, traffic, railway and new industries. China's special steel industry is responsible for the special steel products needed by the key industries such as defense industry, high and new technology industry and machinery and automobile industry. China manufacturing growth to provide a space for the development of domestic special steel, sustained and rapid development of manufacturing industry, especially in machinery, automobile, machinery, shipbuilding and other industries, the strong demand of special steel, become the direct impetus to support excellent steel market.s
Carbon steel and stainless steel and pattern steel and special steel and high carbon steel difference
- Steel containing less than 0.25% of carbon is low carbon steel, 0. 25%-0.6% is medium carbon steel, more than 0.6% is high carbon steel, low, medium and high carbon steel can be called carbon steel, useful alloy composition is greater than 3, alloy steels
Classification of special steel products
- According to the carbon content of the steel can be divided into low carbon steel (WC = 0.25%), steel (0.25% WC 0.6%) and high carbon steel (wc>0.6%) according to the content of phosphorus and sulfur can be divided into ordinary carbon steel (carbon steel with phosphorus, sulfur, high quality carbon steel (P), low sulfur and high quality (steel) phosphorus, sulfur lower).In general, the higher carbon content in carbon steel, the higher hardness and higher strength, but lower plasticity. This kind of steel is mainly carbon steel to ensure mechanical properties, so the brand reflects its mechanical properties, represented by the Q+ number, "Q" to "yield point bend" word Pinyin prefix, a digital representation of the yield point value, such as Q275 said the yield point is 275MPa. If the grades are marked with letters A, B, C and D, the quality grade of steel is different. The quantity of S and P is reduced, and the quality of steel is improved. If the letter "F" is marked behind the grade, it is "boiling steel". The label "B" is a semi killed steel, and no "F" or "B" is used as a killed steel. For example, Q235-A = F indicates a yield point of 235MPa for grade a rimmed steel, and Q235-c represents a C grade killed steel with a yield point of 235MPa.s
What grade of iron powder should be used for processing special steel? Are there any other elements on the request? How much are they?
- Special steel into high quality carbon steel, alloy steel, high alloy steel (alloy element is greater than 10%) three categories, including alloy steel and high alloy steel special steel production accounted for 70%.s
Is the steel column of the steel structure HM a special steel?
- Because the legs are parallel inside and outside, the legs are at right angles and are assembled and assembled into components to save welding and riveting, and the work load is 25%. Often used in large capacity requirements, large cross section stability, such as buildings, high-rise buildings, as well as bridges, ships, lifting transport machinery, equipment foundation, support, foundation piles.s
What is special steel? What is special steel?
- However, special steel refers to stainless steel, other special steel plate, such as automobile steel plate and military steel plate, etc., stainless steel is divided into austenite and ferrite, such as 304316410439 stainless steel varieties. According to the specific use of stainless steel quality, such as 409L can be used as a container, microwave oven and elevator industry, 304 can be used as medical devices. The market prospect is not an ordinary person can predict, domestic steel prices are monthly pricing, big companies such as Baosteel, TISCO, Zhangjiagang Pohang. Lead the trend of special steel prices.s
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