Year1
- 材质：
- 高压锅炉钢管
- 规格：
- 常规齐全
- 品牌：
- 国产进口
Alloy structural steel B/ is based on high-quality carbon structural steel, with one or several alloying elements appropriately added to improve the mechanical properties, toughness and hardenability of the steel. sex. Products made of this type of steel usually need to be heat treated, normalized or quenched and tempered. The parts made of them usually need to be quenched and tempered or surface chemical treatment, such as carburizing and nitriding, surface quenching or high frequency quenching before use. Therefore, according to the chemical composition, mainly carbon content, heat treatment process and use, this type of steel can be roughly divided into three types: carburizing, quenching and tempering and nitrided steel.
This type of steel is often rolled and forged into round and square flat profiles and seamless steel pipes. It is mostly used to make important and larger parts of mechanical products and high-pressure pipeline containers. This high-quality carbon structural steel has more Excellent comprehensive mechanical properties.
Seamless steel pipes made of this type of steel are widely used in hydraulic props, high-pressure gas bottles, high-pressure boilers, fertilizer equipment, petroleum cracking, automobile axle sleeves, diesel engine hydraulic pipe fittings and other pipes.
Chemical composition of high pressure boiler tube
Material
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High quality carbon structural steel steel number have.
Alloy structural steel grades, etc.
In addition to ensuring the chemical composition and mechanical properties of commonly used boiler tubes made of rusty and heat-resistant steel, hydraulic pressure tests must be carried out one by one, and expansion and flattening tests must be carried out. Steel pipes are delivered in heat treated condition.
In addition, there are also certain requirements for the microstructure and grain size of the decarburized layer of the finished steel pipe.
Specifications and appearance quality of high-pressure boiler tubes "Seamless Steel Pipes for High-Pressure Boilers" The outer diameter and wall thickness of hot-rolled tubes vary from ~ to ~. The outer diameter of cold-drawn and cold-rolled pipes varies from ~ to ~, and the wall thickness ranges from ~ to ~.
Alloy structural steel is steel used as mechanical parts and various engineering components and contains one or several certain amounts of alloying elements. Alloy structural steel has better mechanical properties than carbon steel, especially excellent heat treatment properties. Since alloy elements can hinder the diffusion of various atoms in steel during tempering, compared with carbon steel at the same temperature, they generally play the role of delaying the decomposition of martensite and the aggregation and growth of carbides, thus improving the The tempering stability of steel, that is, improving the tempering softening resistance of steel, has a more significant effect, while the effect of . Alloy structural steel is generally divided into quenched and tempered structural steel and surface-hardened structural steel.
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