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Magnesium-silicon-iron alloy spheroidizing agent and preparation method thereof

A ferroalloy and nodulizer technology, applied in the field of alloy metal materials, can solve the problems of subcutaneous stoma defects and high cost, and achieve the effects of reducing production cost, reducing environmental burden and low aluminum content

Inactive Publication Date: 2020-07-14
SANXIANG ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned process for obtaining low-alumina nodulizers has the problems of high cost and easy generation of subcutaneous stomata defects

Method used

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  • Magnesium-silicon-iron alloy spheroidizing agent and preparation method thereof
  • Magnesium-silicon-iron alloy spheroidizing agent and preparation method thereof
  • Magnesium-silicon-iron alloy spheroidizing agent and preparation method thereof

Examples

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preparation example Construction

[0022] The preparation method of the magnesium ferrosilicon alloy spheroidizing agent provided by the present invention includes the following steps:

[0023] (1) Dry the monocrystalline silicon cutting material or polycrystalline silicon cutting material;

[0024] (2) Mix 40-50 parts by weight of the dried monocrystalline silicon cutting material or polycrystalline silicon cutting material with 45-55 parts by weight of scrap steel, and then use an induction furnace for smelting to obtain an alloy liquid;

[0025] (3) 5-9 parts by weight of metallic magnesium, 2-5 parts by weight of metallic calcium and 1-3 parts by weight of lanthanum-cerium rare earth are added to the alloy liquid, and the alloying reaction is carried out at 1250-1300°C, and then Pouring and molding are carried out to obtain a magnesium ferrosilicon alloy spheroidizing agent.

[0026] From the above description, the beneficial effects of the present invention are:

[0027] Through the design of the above preparation ...

Embodiment 1

[0038] The preparation method of the magnesium ferrosilicon alloy spheroidizing agent of this embodiment includes the following steps:

[0039] The high-purity water-containing silicon powder scraps produced during the slicing process of solar-grade single / polycrystalline silicon plates are used as raw materials, which are extruded and pelletized in an extruder. The pellets are put into a rotary drying kiln and dried at 80°C. 1mm or more of the pellets account for more than 85%. The weighed mono / polycrystalline silicon chip cutting powder pellets and clean scrap are heated and melted in the induction furnace. After the materials are melted, the power is cut off and the slag is removed. The molten pool The temperature is controlled at 1250℃, the power is turned on, and the semi-hermetic gravity pressure magnesium process is adopted to quickly press the metal magnesium, metal calcium and lanthanum cerium rare earth into the alloy liquid for alloying reaction. After the reaction is c...

Embodiment 2

[0042] The preparation method of the magnesium ferrosilicon alloy spheroidizing agent of this embodiment includes the following steps:

[0043] The high-purity water-containing silicon powder scraps produced during the slicing process of solar-grade single / polycrystalline silicon plates are used as raw materials, which are extruded and pelletized in an extruder. The pellets are put into a rotary drying kiln and dried at 150°C. 1mm or more of the pellets account for more than 85%. The weighed mono / polycrystalline silicon chip cutting powder pellets and clean scrap are heated and melted in the induction furnace. After the materials are melted, the power is cut off and the slag is removed. The molten pool The temperature is controlled at 1300℃, the power is turned on, and the semi-hermetic gravity pressure magnesium process is adopted to quickly press the metallic magnesium, metallic calcium and lanthanum-cerium rare earth into the alloy liquid for alloying reaction. After the reacti...

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Abstract

The invention relates to a magnesium-silicon-iron alloy spheroidizing agent and a preparation method thereof. The preparation method of the magnesium-silicon-iron alloy spheroidizing agent comprises the following steps: (1) a monocrystalline silicon cutting material or a polycrystalline silicon cutting material is dried; (2) 40-50 parts by weight of the dried monocrystalline silicon cutting material or polycrystalline silicon cutting material is mixed with 45-55 parts by weight of scrap steel, and then an induction furnace is adopted for smelting a mixture to obtain an alloy liquid; and (3) 5-9 parts by weight of magnesium metal, 2-5 parts by weight of calcium metal and 1-3 parts by weight of lanthanum-cerium rare earth are added into the alloy liquid, and alloying reaction is carried outunder the condition of 1250-1300 DEG C, and then casting molding is carried out to obtain the magnesium-silicon-iron alloy spheroidizing agent. According to the magnesium-silicon-iron alloy spheroidizing agent and the preparation method thereof, the cost can be reduced, and the content of the aluminum element is controlled to be at a low level.

Description

Technical field [0001] The invention relates to alloy metal material technology, in particular to a magnesium-silicon-iron alloy spheroidizing agent and a preparation method thereof. Background technique [0002] As one of the most widely used metal materials in industrial applications, ductile iron has greatly improved the original properties of cast iron. Its strength, ductility and ductility are similar to those of steel. It can be better used for complex forces, strength, toughness and resistance. Casting parts requiring high grinding degree. The spheroidizing treatment, as an important means of obtaining nodular cast iron, is realized by the addition of spheroidizing agent. The addition of spheroidizing agent changes the shape of graphite in cast iron from bars, flakes, and spheroids to spherical shapes, and then obtains the structure of nodular cast iron. Effectively improve the mechanical properties of cast iron. [0003] The spheroidizing agent of magnesium ferrosilicon r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/10C22C33/10C22C30/00
CPCC21C1/105C22C33/10C22C30/00C22C38/06C22C38/02C22C38/005C22C38/002Y02P10/20
Inventor 包晓刚魏爽史鑫叶文高鸿魁
Owner SANXIANG ADVANCED MATERIALS
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