X65 steel plate for pipe fittings and production method thereof
A technology of X65 and steel plates, which is applied in the field of X65 steel plates for pipe fittings and its production, can solve the problems of difficult production, long production cycle and high cost
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Embodiment 1
[0033] Through KR molten iron pretreatment, converter smelting, LF refining, VD vacuum refining, continuous casting, heating, rolling, controlled cooling, and slow cooling processes, the finished steel X65 steel plate for pipe fittings with the chemical composition described in Table 1 below is obtained, wherein The mechanical and mechanical properties of X65 steel plates for pipe fittings are shown in Table 3 below.
[0034] Table 1 Chemical Composition of Steel in Example 1
[0035]
Embodiment 2
[0037] Through KR hot metal pretreatment, converter smelting, LF refining, VD vacuum refining, continuous casting, heating, rolling, controlled cooling, and slow cooling processes, the finished steel X65 steel plate for pipe fittings with the chemical composition described in Table 2 below is obtained, wherein The mechanical and mechanical properties of X65 steel plates for pipe fittings are shown in Table 3 below.
[0038] Table 2 Chemical Composition of Steel in Example 2
[0039]
[0040] The process route of the present invention: KR molten iron pretreatment→converter smelting→LF refining→VD vacuum smelting→continuous casting machine pouring→slab slow cooling→slab heating→slab dephosphorization→TMCP rolling→controlled cooling→steel plate straightening→stacking Pile slow cooling→surface inspection→finishing→flaw detection→performance inspection→qualified product storage.
[0041]Steelmaking composition: Since the steel plate requires high yield strength, it is difficult...
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