Rolling method for high carbon steel
A high-carbon steel and finishing rolling technology, applied in the field of hot-rolled strip steel manufacturing, can solve the problems of decreased turnover rate of steel coil warehouses and extended production cycle, and achieve the effects of good plasticity, increased turnover rate and high strength
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Embodiment 1
[0031] The chemical composition and rolling process parameters of the steel slab in Example 1 are shown in Table 1 and Table 2, respectively, corresponding to the data of Example 1.
[0032] The rolling process of Example 1 is now described, and Examples 2-5 are compared with the method of Example 1, but are carried out according to the respective chemical composition and rolling process parameters in Table 1 and Table 2, and will not be repeated here.
[0033] The chemical composition (as shown in Table 1) is C: 0.80%, Si: 0.20%, Mn: 0.30%, P: 0.012%, S: 0.005%, balance: Fe and unavoidable impurities, high carbon steel plate The billet undergoes rough rolling, finish rolling, laminar cooling, and coiling in sequence, among which,
[0034] The rolling method of high carbon steel, the process steps include rough rolling, finish rolling, laminar cooling, and coiling of high carbon steel slabs in sequence, the rough rolling is rolled according to the conventional process, and the...
Embodiment 2
[0039] Example 2 is compared with the method of Example 1, but is carried out according to the chemical composition and rolling process parameters of the billet corresponding to Example 2 in Table 1 and Table 2, and will not be repeated here.
[0040] The billet chemical composition of embodiment 2, rolling process parameter see the corresponding data of embodiment 2 in table 1, table 2 respectively, wherein finish rolling is divided into 5 pass rolling, and the rolling temperature of each pass and reduction rate are as table 5. After finishing rolling, laminar cooling, and coiling, the microstructure and mechanical properties of the plate are shown in the corresponding data of Example 2 in Table 3. The pearlite lamellar spacing is 200nm, the yield strength is 720MPa, and the tensile strength is 1154MPa , the elongation rate is 22%.
[0041] The finishing process of table 5 embodiment 2
[0042] pass
Embodiment 3
[0044] Example 3 is compared with the method of Example 1, but is carried out according to the chemical composition and rolling process parameters of the billet corresponding to Example 3 in Table 1 and Table 2, and will not be repeated here.
[0045] The billet chemical composition of embodiment 3, rolling process parameter see the corresponding data of embodiment 3 in table 1, table 2 respectively, and wherein finishing rolling is divided into 6 pass rolling, and the rolling temperature of each pass and reduction rate are as table 6. After finishing rolling, laminar cooling, and coiling, the microstructure and mechanical properties of the plate are shown in the corresponding data of Example 3 in Table 3. The pearlite lamellar spacing is 175nm, the yield strength is 750MPa, and the tensile strength is 1218MPa , the elongation rate is 23%.
[0046] The finishing process of table 6 embodiment 3
[0047] pass
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Abstract
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