12Cr1MoV alloy steel pipe
Main characteristics: the creep limit of this steel is very close to the permanent strength value, and it has high plasticity under the condition of permanent stretching; the steel has good manufacturability and weldability, but it needs to be preheated to 300 ℃ before welding, and after welding Stress relief is required.
It is a widely used steel grade for high pressure, ultra-high pressure and subcritical power plant boiler superheaters, headers and main steam conduits. At 580 ℃, it still has high thermal strength and oxidation resistance, and has high permanent plasticity. The production process is simple and the welding performance is good, but it is more sensitive to the normalizing cooling rate. Long-term use at 580°C will produce pearlite spheroidization. The biggest advantage is that it can be recycled 100%, which is in line with the national strategy of environmental protection, energy saving and resource saving. The domestic policy encourages the expansion of the application field of 12Cr1MoV alloy steel pipe.
At present, the consumption of 12Cr1MoV alloy steel pipe in my country accounts for only half of the total amount of steel in developed countries. The expansion of the use field of 12Cr1MoV alloy steel pipe provides a broader space for the development of the industry. According to the research of 12Cr1MoV alloy steel pipe branch of China Special Steel Association, the demand for high-pressure 12Cr1MoV alloy steel pipe long products in my country will increase by an average of 10-12% in the future.
Dec 01, 2021
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