A copper-containing titanium high-strength and high-corrosion-resistant austenitic stainless steel and its preparation method
A high-strength austenitic stainless steel technology, applied in the field of austenitic stainless steel, can solve problems affecting the safe operation of nuclear power plants, damage to components or equipment, etc.
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Embodiment 1
[0052]Select electrical pure iron, metal chromium sheet, metal nickel plate, metal molybdenum, 316 stainless steel waste, pure copper plate, and metal titanium as raw materials. The stainless steel composition is as follows: C=0.03, Ni=12.5, Cr=17.0, Mo=2.2, Ti=0.12, Cu=0.2, Mn=1.2, Si=0.8, P≤0.035, S≤0.030, Fe=balance. After weighing the corresponding raw materials according to the composition requirements, argon shielded arc melting, the temperature of the molten pool is kept at 1720°C during melting; the molten steel is calmed for 10 minutes before pouring, and the molten steel is poured under argon shielding at 1650°C. Cast into round ingots.
[0053] The ingot can be opened by hot forging, and the billet after hot forging is then cross-rolled and pierced to obtain a pipe billet; hot forging and cross-rolled piercing are heated to 1260 ° C, kept for 5 hours and then released for forging, the initial forging temperature is 1170 ° C, and the final forging temperature is 1170...
Embodiment 2
[0058] Select 316 stainless steel waste, pure copper plate, and ferrotitanium as raw materials, and configure the stainless steel composition as follows: C=0.04, Ni=12.0, Cr=17.8, Mo=2.7, Ti=0.16, Cu=0.3, Mn=1.2, Si=0.7 , P≤0.035, S≤0.030, Fe=balance.
[0059] After weighing the corresponding raw materials according to the composition requirements, vacuum induction melting is carried out, and the temperature of the molten pool is maintained at 1680°C during melting; the molten steel is calmed for 5 minutes before pouring, and the molten steel is vacuum poured at 1550°C. Cast into square ingots.
[0060] The billet is heated to 1270°C, and after 3 hours of heat preservation, the billet is opened by pass rolling. The initial rolling temperature is 1160°C, the final rolling temperature is 980°C, and the total area reduction rate of rolling is 62%. Bars were obtained, and the total rolling deformation was calculated as 82% according to the reduction of area. The bar is kept at 1...
Embodiment 3
[0063] 316 stainless steel waste, pure copper plate, titanium iron, and graphite block are selected as raw materials, and the stainless steel components configured are as follows: C=0.08, Ni=12.2, Cr=17.5, Mo=2.4, Ti=0.32, Cu=0.8, Mn=1.2, Si=0.6, P≤0.035, S≤0.030, Fe=balance.
[0064] After weighing the corresponding raw materials according to the composition requirements, vacuum induction melting is carried out, and the temperature of the molten pool is kept at 1710°C during melting; the molten steel is calmed for 8 minutes before pouring, and the molten steel is vacuum poured at 1580°C. Cast into square ingots.
[0065] The ingot can be opened by hot forging. The forging plan is to heat the billet to 1250°C, heat it for 3 hours and then take it out of the furnace for forging. The initial forging temperature is 1150°C, the final forging temperature is 1000°C, and the total forging ratio is 4.0;
[0066] The blank is first processed by cold forging, and then cold stamped to ...
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