Galvanizing bake hardening steel plate with timeliness being larger than 6 months and production method of galvanizing bake hardening steel plate
A baking hardening and production method technology, applied in the field of metallurgy, can solve problems such as insufficient aging resistance, achieve the effects of solving insufficient aging resistance, improving aging resistance, and reducing precipitation tendency
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[0018] Example 1
[0019] The specification of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment is 0.6mm*1200mm, and its chemical composition and mass percentage are shown in Table 1.
[0020] The production method of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment includes hot metal pretreatment, decarburization converter, RH vacuum treatment, continuous casting, slab hot charging, hot rolling, acid continuous rolling, and continuous hot plating The zinc and finishing process after plating, the specific process steps are as follows:
[0021] (1) Decarburization converter process: the molten iron is pretreated and decarburized to 0.035% by the decarburization converter;
[0022] (2) RH vacuum treatment process: control the B content of RH outbound station at 0.0008%;
[0023] (3) Continuous casting process: the whole process of continuous casting protects the casting, and the N is controlled at 0.0...
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[0030] Example 2
[0031] The specification of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment is 1.0mm*1325mm in thickness, and its chemical composition and mass percentage are shown in Table 1.
[0032] The production method of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment includes hot metal pretreatment, decarburization converter, RH vacuum treatment, continuous casting, slab hot charging, hot rolling, acid continuous rolling, and continuous hot plating The zinc and finishing process after plating, the specific process steps are as follows:
[0033] (1) Decarburization converter process: the molten iron is pretreated and decarburized to 0.040% by the decarburization converter;
[0034] (2) RH vacuum treatment process: the B content of RH outbound station is controlled at 0.0010%;
[0035] (3) Continuous casting process: the whole process of continuous casting protects the casting, and the N i...
Example Embodiment
[0042] Example 3
[0043] The specification of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment is 0.8mm*1300mm, and its chemical composition and mass percentage are shown in Table 1.
[0044] The production method of the galvanized bake-hardened steel sheet with aging of more than 6 months in this embodiment includes hot metal pretreatment, decarburization converter, RH vacuum treatment, continuous casting, slab hot charging, hot rolling, acid continuous rolling, and continuous hot plating The zinc and finishing process after plating, the specific process steps are as follows:
[0045] (1) Decarburization converter process: the molten iron is pretreated and decarburized to 0.045% by the decarburization converter;
[0046] (2) RH vacuum treatment process: the B content of RH outbound station is controlled at 0.0012%;
[0047] (3) Continuous casting process: the whole process of continuous casting protects the casting, and the N is controlled ...
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