Steel pipe with ultrahigh strength and continuous production method of steel pipe
An ultra-high-strength, production method technology, applied in the field of metal and steel, can solve the problems of high manufacturing cost, low production operation rate, increase manufacturing cost, etc., to save production time and operation intensity, improve production operation rate, and reduce production cost. Effect
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[0014] Examples 1 to 6: The ultra-high-strength steel pipe adopts the following raw materials and continuous production methods.
[0015] Steel raw materials: the chemical composition ratio of the steel used in this ultra-high-strength steel pipe is shown in Table 1.
[0016] Table 1: Chemical composition of steel raw materials (wt%)
[0017]
[0018] Production process: The above-mentioned steel plate or steel coil is crimped and formed through a welding production line and a heat treatment production line to make the ultra-high-strength steel pipe; the welding production line includes pipe winding, welding, deburring and smoothing processes; the heat treatment production line installation Behind the welding production line, including high-frequency quenching, intermediate-frequency tempering and shot peening processes.
[0019] The specific process flow is: steel plate or steel coil-slitting into strips-uncoiling-coiled pipe-welding-deburring-smoothing-high frequency quenching-inter...
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