P-si intermediate alloy and preparing method
An intermediate alloy, p-si technology, applied in the field of metal materials, can solve the problems of environmental pollution, high use cost, low phosphorus content, etc., and achieve the effect of improving mechanical and service performance, reducing production cost, and high phosphorus content
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Embodiment 1
[0014] (1) at first take raw material by the mass ratio of pure silicon 60%, red phosphorus 20%, pure nickel 20%;
[0015] (2) Alloying pure silicon and pure nickel in a high-temperature melting furnace and keeping it warm at 1550°C;
[0016] (3) Heat the red phosphorus to 450°C in a nitrogen-protected low-temperature holding furnace, keep the phosphorus vapor pressure in the furnace at 1 atmosphere, connect the phosphorus vapor to the bottom of the silicon-nickel-manganese alloy melt through the phosphorus pipe, and stir the alloy melt , to promote the dissolution of phosphorus in the melt;
[0017] (4) Cast directly into ingots.
[0018] A P-Si master alloy with an optimal composition is obtained according to the above proportioning ratio, and its chemical composition (mass percentage) is: 60 silicon, 20 phosphorus, and 20 nickel.
Embodiment 2
[0020] (1) at first take raw material by the mass ratio of pure silicon 65%, red phosphorus 20%, pure manganese 15%;
[0021] (2) Alloying pure silicon and pure manganese in the above-mentioned high-temperature smelting furnace, and keeping it warm at 1450°C;
[0022] (3) Red phosphorus is heated to 520 DEG C in the low-temperature holding furnace protected by argon, and the phosphorus vapor pressure in the furnace is kept at 1.5 atmospheres, and phosphorus is added to the silicon-manganese alloy melt by the method of Example 1;
[0023] (4) Atomized into powder by atomizer.
[0024] A P-Si master alloy with optimal composition is obtained according to the above proportioning ratio, and its chemical composition (mass percentage) is: silicon 65, phosphorus 20, manganese 15.
Embodiment 3
[0026] (1) at first take raw material by the mass ratio of pure silicon 40%, red phosphorus 25%, pure nickel 20%, pure manganese 15%;
[0027] (2) Alloying pure silicon, pure nickel and pure manganese in the above-mentioned high-temperature melting furnace, and keeping it warm at 1500°C;
[0028] (3) Red phosphorus is heated to 500 DEG C in the low-temperature holding furnace protected by argon, and the phosphorus vapor pressure in the furnace is kept at 1.25 atmospheres, and phosphorus is added to the silicon-nickel-manganese alloy melt by the method of Example 1;
[0029] (4) Pouring into ingots or atomizing powder.
[0030] A P-Si master alloy with optimal composition is obtained according to the above proportioning ratio, and its chemical composition (mass percentage) is: 40% silicon, 25% phosphorus, 20% nickel, and 15% manganese.
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