Method for making high intensity non-magnetic non-corrodible steel tauten screw rod
A technology of non-magnetic stainless steel and tightening screw, which is applied in the field of metallurgy to achieve the effect of less investment, simple equipment and lower cost
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[0014] Embodiment: the manufacture method of present embodiment is as follows:
[0015] 1. Manganese (Mn), nitrogen (N) instead of nickel, such as 55Mn18Cr4N, Mn (17-19%), Cr (3-5%), N (0.20-0.45%), has become nickel-free and non-magnetic steel, Since nitrogen (N) is difficult to add to steel, it is baked into nitrogen compounds, which are ferrochromium nitride (Fe-Cr-N), or ferromanganese nitride (Fe-Mn-N), or two The way of the combination of the former is added to the molten steel. The amount of nitride added accounts for 20-30% by weight of the whole raw material, and 70-80% of original ecological scrap steel is added, and the steel ingot is smelted by an electric arc furnace. Raw ecological steel is the material cut from iron ore smelted into steel. It has not entered the society, does not contain dirt, oil, and has few impurities.
[0016] Usually, there are always many impurities and inclusions in molten steel, but non-magnetic stainless steel is very sensitive to inc...
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