Hot rolling roll for rolling titanium plate and manufacturing method thereof
A technology of hot roll and titanium plate, applied in the direction of roll, metal rolling, manufacturing tools, etc., can solve the problems such as hot cracks on the surface of the roll body, poor quality of the titanium plate surface, large amount of grinding under the machine, etc. The effect of enhancing corrosion resistance, strong corrosion resistance and strong thermal crack resistance
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Embodiment 1
[0027] Hot rolls for rolling titanium plates, the design targets for the chemical components and weight percentages in the hot rolls are: C0.30-0.35%, Si0.80-0.90%, Mn0.70-0.80%, Cr4 .50~5.00%, Ni0.35~0.45%, Mo1.40~1.50%, V0.80~0.90%, P≤0.025%, S≤0.020%; the rest is Fe and unavoidable impurities.
[0028] The manufacturing method of the hot-rolled titanium work roll comprises the following process steps:
[0029] A. Refining steel ingots: prepare raw materials according to the above chemical components and their weight percentages, and carry out preliminary smelting in an electric arc furnace into molten steel. After smelting, the molten steel is refined and vacuum degassed in an LF refining furnace. The molten steel is poured and molded into electrode ingots;
[0030] After the obtained electrode ingot is annealed, the electrode ingot is melted and cast into a steel ingot by using an electroslag remelting method.
[0031] After analyzing the chemical composition of the obta...
Embodiment 2
[0040] Process step is identical with embodiment 1 among the embodiment 2, and the difference with embodiment 1 is:
[0041] The design targets for the chemical components and weight percentages of the hot rolls described in this example are: C0.40-0.45%, Si0.60-0.70%, Mn0.90-1.00%, Cr4.50-5.00% , Ni0.05~0.10%, Mo1.60~2.00%, V0.50~0.60%, P≤0.025%, S≤0.020%; the rest is Fe and unavoidable impurities.
[0042]Carry out chemical composition analysis to the steel ingot that step A obtains, the chemical composition and weight percentage composition thereof in the obtained steel ingot are: C0.45%, Si0.60%, Mn1.00%, Cr4.50%, Ni0.05 %, Mo2.00%, V0.50%, P0.019%, S0.015%.
[0043] The surface hardness of the hot-rolled work roll of this embodiment is measured by a dedicated roll Shore hardness tester to be 73-75 HSD. The hot roll produced in this embodiment has good metallographic structure and metallurgical properties. Under the same rolling temperature and rolling load, the corrosio...
Embodiment 3
[0045] Process step is identical with embodiment 1 among the embodiment 3, and the difference with embodiment 1 is:
[0046] The design targets of the chemical components and weight percentages of the hot rolls described in this example are: C0.30-0.35%, Si0.80-0.90%, Mn0.60-0.70%, Cr4.80-5.50% , Ni0.55~0.65%, Mo1.00~1.10%, V0.60~0.70%, P≤0.020%, S≤0.010%; the rest is Fe and unavoidable impurities.
[0047] Carry out chemical composition analysis to the steel ingot that step A obtains, the chemical composition and weight percentage composition thereof in the steel ingot that obtains are: C0.30%, Si0.80%, Mn0.60%, Cr5.50%, Ni0.65 %, Mo1.00%, V0.70%, P0.017%, S0.007%.
[0048] The surface hardness of the hot-rolled work roll of this embodiment is measured by a dedicated roll Shore hardness tester to be 72-74 HSD. The hot roll produced in this embodiment has good metallographic structure and metallurgical properties. Under the same rolling temperature and rolling load, the corr...
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