Wearable nut and manufacture method thereof
A manufacturing method and technology of nuts, applied in the direction of nuts, threaded fasteners, connecting components, etc., can solve the problems of low hardness, poor wear resistance, unsatisfactory, etc., achieve high hardness, reduce phase transition stress, and reduce cracks The effect produced
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Embodiment 1
[0031] 1. The manufacturing steps of alloy materials are as follows:
[0032] 1) Take the raw material iron and put it into a low-frequency melting furnace and heat it at 1000°C for 10 hours, then put the molten material in the low-frequency melting furnace in a converter and simultaneously use a 20T oxygen top-blown converter; the low-frequency melting furnace heats the material through electromagnetic induction.
[0033] The refining of molten steel outside the furnace is to move the refining tasks to be completed in the general steelmaking furnace, such as desulfurization, deoxidation, degassing, removal of non-metallic inclusions, adjustment of steel composition and molten steel temperature, etc., to the "ladle" outside the furnace. ” or in a dedicated container. In this way, the original steelmaking process is divided into two steps. First, melting and primary refining are carried out in a general steelmaking furnace. In this embodiment, a low-frequency melting furnace is...
Embodiment 2
[0048] 1. The manufacturing steps of alloy materials are as follows:
[0049] 1) Take the raw material iron and put it into a low-frequency melting furnace and heat it at 1200°C for 15 hours, then put the molten material in the low-frequency melting furnace into a converter and simultaneously use a 35T oxygen top-blown converter;
[0050] The raw material iron is composed of pig iron block and scrap steel, wherein the pig iron block is the main raw material for steelmaking, and generally accounts for 70%-100% of the loaded amount. The chemical heat and physical heat of molten iron obtained by heating the pig iron block are the main heat sources for the oxygen top-blown converter steelmaking. The silicon (Si) content of each element in the pig iron block is 0.30% to 0.60%; the manganese (Mn) content is 0.20% to 0.80%; the lower the phosphorus (P) content is ≤0.20%; the sulfur (S) content is ≤0.05%; The carbon (C) content is 3.5% to 4.5%. The sulfur and phosphorus content of s...
Embodiment 3
[0063] 1. The manufacturing steps of alloy materials are as follows:
[0064] 1) Take the raw material iron and put it into a low-frequency melting furnace and heat it at 1050°C for 12 hours, then place the molten material in the low-frequency melting furnace in a converter and simultaneously use a 25T oxygen top-blown converter;
[0065] The raw material iron is composed of pig iron block and scrap steel, wherein the pig iron block is the main raw material for steelmaking, and generally accounts for 70%-100% of the loaded amount. The chemical heat and physical heat of molten iron obtained by heating the pig iron block are the main heat sources for the oxygen top-blown converter steelmaking. The silicon (Si) content of each element in the pig iron block is 0.30% to 0.60%; the manganese (Mn) content is 0.20% to 0.80%; the lower the phosphorus (P) content is ≤0.20%; the sulfur (S) content is ≤0.05%; The carbon (C) content is 3.5% to 4.5%. The sulfur and phosphorus content of s...
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