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Method for preparing silicon carbide metal composite material

A metal composite material and silicon carbide technology, applied in the field of metal composite materials, can solve the problems of low hardness and wear resistance, complicated operation, complicated process, etc., and achieve the effects of low equipment cost, uniform composite material and stable performance

Inactive Publication Date: 2019-04-26
赛兴(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In Chinese patent CN108265219 A, iron, red lead, osmium, phosphorus flake graphite, nickel, feldspar, titanium, ceramics, chlorinated nitrile rubber, dimethylsiloxane, lead stearate, modified montmorillonite, Talc, kaolin and calcium carbonate are used as raw materials to produce a metal composite material. This method has a wide variety of raw materials, and the process is complicated and time-consuming. It also introduces pollution sources such as heavy metal ions and rubber.
In Chinese patent CN108060315 A, metal powder and boron carbide powder are mixed and pressed, and boron carbide powder is sprayed at high pressure after heating, and then molded and sintered into a wear-resistant metal composite material. This method uses powder pressing, high-pressure spraying powder, etc. Operation is complex and There are certain safety hazards, and its hardness and wear resistance are lower than those of silicon carbide metal composite materials

Method used

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  • Method for preparing silicon carbide metal composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of silicon carbide metal composite wear-resistant parts, select three generations of continuous silicon carbide fibers with a length of 500m / roll, a fiber diameter of 10-12μm, a fiber strength of 2.3GPa, and a fiber density of 2.3g / cm³; Weaving 1K fibers into 3×3 strands / cm woven cloth, the weight of the woven cloth is 80~90g / ㎡, the thickness is about 0.3mm, and the size of the hole is a square with a side length of 2 mm; the woven cloth is Cut it into a rectangle of 50×70mm, and fix it on the cavity wall with iron nails. The gap between the woven cloth and the cavity wall is about 1cm, and the two ends of the woven cloth are embedded in the center of the clay sand mold. The molten iron is compacted to cover the cavity mold to prevent the lifting phenomenon when the molten iron is poured. After the molten iron is cooled naturally, the silicon carbide metal composite wear-resistant parts are obtained.

Embodiment 2

[0033] Select a continuous silicon carbide fiber with a length of 500m / roll, a fiber diameter of 10~12μm, a fiber strength of 2.4GPa, and a fiber density of 2.4g / cm³; weave 1K fibers into a weave of 6×6 fibers / cm by plain weaving Cloth, the weight of the woven cloth is 300~320g / ㎡, the thickness is about 0.35mm, and the size of the hole is a square with a side length of 3 mm; the woven cloth is cut into a rectangle of 50×140mm, and fixed on the mold On the cavity wall, the gap between the woven cloth and the cavity wall is about 0.5cm. Fix it on the cavity wall with iron nails, pour molten iron into the cavity, and compact it to cover the cavity mold to prevent molten iron from pouring The phenomenon of lifting occurs when the molten iron is cooled naturally, and the silicon carbide metal composite wear-resistant parts are obtained.

Embodiment 3

[0035] Select a continuous silicon carbide fiber with a length of 500m / roll, a fiber diameter of 10~12μm, a fiber strength of 2.5GPa, and a fiber density of 2.5g / cm³; weave the 1K fiber into a weave of 8×4 fibers / cm by plain weaving Cloth, the weight of the woven cloth is 360~380g / ㎡, the thickness is about 0.4mm, and the size of the hole is a square with a side length of 5 mm; the woven cloth is cut into a rectangle of 50×140mm, and fixed on the mold On the cavity wall, the woven cloth is tightly attached to the cavity wall, fixed on the cavity wall with iron nails, poured molten iron into the cavity, and compacted to cover the cavity mold to prevent the molten iron from lifting when pouring Phenomenon, after the molten iron is naturally cooled, silicon carbide metal composite wear-resistant parts are obtained.

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Abstract

The invention provides a method for preparing a silicon carbide metal composite material. The method comprises the following steps that three-dimensional continuous silicon carbide fiber with a multifilament number of 1K is woven into through-hole silicon carbide fiber cloth; in order to improve the interface performance, the surface of the through-hole silicon carbide fiber cloth is coated; the through-hole silicon carbide fiber cloth is cut into the shape of the cavity wall and fixed to a mold cavity; molten iron is poured into the mold cavity; the molten iron is infiltrated and covered withthe through-hole silicon carbide fiber cloth; and the silicon carbide metal composite material can be obtained after the natural cooling of the molten iron. Compared with the prior art, the silicon carbide metal composite material prepared has higher strength and better wear resistance and corrosion resistance; the production process is simple, safe, green and environmentally-friendly; the original molten iron pouring molding process can be used; the equipment cost is low; the production process of a manufacturer is not changed; and the production and promotion are convenient.

Description

technical field [0001] The invention relates to a method for preparing a silicon carbide metal composite material, belonging to the technical field of metal composite materials. Background technique [0002] With the rapid development of my country's industrial modernization and urban economy, my country's basic industries such as building materials, cement, metallurgical mines, dredging engineering and thermal power generation have also developed rapidly. Due to the very harsh working conditions in industrial production, a large number of wear problems will occur during the mining, crushing, grinding and transportation of materials and cause damage to machine parts and components. In order to maintain normal production and operation, it is necessary to have enough durability. Mill spare parts are in continuous supply. Wear is one of the main sources of material and energy consumption in industry, among which abrasive wear is the most serious, accounting for about 50% of va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/08C22C47/06C22C47/04C22C49/08C22C49/14C22C101/14
CPCC22C47/04C22C47/06C22C47/08C22C49/08C22C49/14
Inventor 田秀梅钱钦张博
Owner 赛兴(北京)科技有限公司