Seamless steel pipe for vehicle shaft and manufacturing method

A technology for seamless steel pipes and manufacturing methods, applied in the direction of manufacturing tools, pipes, rigid pipes, etc., can solve problems such as cracks in fatigue test cracks, and achieve the effects of mild implementation conditions, good safety performance, and improved performance
CN105506464AActive Publication Date: 2016-04-20BEIJING TAIPU INT PIPE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING TAIPU INT PIPE CO LTD
Publication Date
2016-04-20

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Abstract

The invention discloses a seamless steel pipe for a vehicle shaft. The seamless steel pipe is characterized in that a material forming the seamless steel pipe comprises the chemical components of Fe, C, Si, Mn, P, S, Al, Mo, Cr, Ni and Cu, wherein the mass percentages of the chemical components are as follows: 0.19-0.23% of C, 0.17-0.37% of Si, 1.50-1.70% of Mn, P not more than 0.020%, S not more than 0.010%, 0.025-0.045% of Al, Mo not more than 0.10%, Cr not more than 0.10%, Ni not more than 0.10%, and Cu not more than 0.20%. The seamless steel pipe for the vehicle shaft, provided by the invention, has better performances than a steel pipe staged by the black metallurgical industry standard of the People's Republic of China-seamless steel pipe for vehicle semitrailer shaft YB / T4203-2009, and solves the technical problems of generation of cracks in the square pushing process of an integral bearing square shaft and generation of cracks in the square pushing and expanding process of a drive axle shell in a seamless steel pipe produced according to the black metallurgical industry standard of the People's Republic of China-seamless steel pipe for vehicle semitrailer shaft YB / T4203-2009.
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Description

technical field

[0001] The invention relates to a seamless steel pipe and a manufacturing method, in particular to a seamless steel pipe for an automobile shaft and a manufacturing method. Background technique

[0002] The demand for light trucks, heavy trucks and their trailers is increasing in the modern automobile transportation industry, and seamless steel pipes for shafts that are lightweight, overload-resistant, and long-lasting are essential components for manufacturing automobiles. The existing People's Republic of China's ferrous metallurgical industry standard "Seamless Steel Tubes for Automobile Semi-hanging Shafts" YB / T4203-2009 only makes some regulations on the production of seamless steel pipes for automobile axles, but there are many in North China, East China and South China. When axle manufacturing enterprises carry out industrialized production, the seamless steel pipes for automobile axles produced according to the above standards have problems such as cr...

Claims

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