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Metal-based composite reinforcement phase casting technique

A technology of metal matrix composite and casting technology, which is applied in the field of metal matrix composite reinforced phase casting technology, which can solve the problems of poor impact resistance, difficult operation, complex bimetal process, etc., and achieve the effect of simple production process and low cost

Inactive Publication Date: 2015-04-29
北京金煤创业科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, high manganese steel is resistant to impact, but not resistant to erosion, high chromium cast iron is resistant to erosion, but not resistant to impact, and nickel hard cast iron is also poor in impact resistance. At the same time, the current bimetallic process is complicated, and it needs to be smelted and cast at the same time, which is difficult to operate. And the range of composite materials is small

Method used

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  • Metal-based composite reinforcement phase casting technique
  • Metal-based composite reinforcement phase casting technique
  • Metal-based composite reinforcement phase casting technique

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Embodiment Construction

[0011] The reinforcing phase material is made into 1-3mm particles and 140 mesh powder, mixed with the binder at a ratio of 1:1:1, the mixed material is filled into the corresponding mold, and then the mixture is dry-pressed with an isostatic press After forming the pellets, it is pre-fired, and the powder and particles of the reinforcing phase are connected to each other through a binder to form a porous structure with high strength, and will not be washed out during the casting of high-temperature molten metal at 1300-1550 °C scattered. The shape, structure and size of the prefabricated body, that is, the core block, can be obtained by designing the corresponding mold. This kind of reinforced phase material powder and granular prefabricated body is more conducive to the casting and infiltration of molten metal, and its thickness can also be adjusted according to the wear resistance requirements of the product. Make adjustments accordingly.

[0012] The casting process of me...

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Abstract

The invention relates to a metal-based composite reinforcement phase casting technique. The casting technique comprises the steps of infiltrating and combining reinforcement phase metal in a quick-wearing part of a metal part, mixing and pressing reinforcement phase metal particles, powder and a binding agent into pellets, pre-sintering the pellets, fixing the pellets on the surface of the metal part, casting liquid metal on the pellets, infiltrating molten metal to the pellets to soak and combine with the reinforcement phase metal by virtue of static pressure and capillary force, and forming metal and a reinforcement phase composite layer when a casting is formed. The casting process provided by the invention is convenient in production process and low in cost; furthermore, the infiltration and combination between the prefabricate pellets and a casting body can be solved, therefore the pellets and a matrix are fused together without any obvious limit.

Description

technical field [0001] The invention relates to a metal-matrix composite reinforcement phase casting process (that is, a metal matrix + other reinforcement phase composite casting process). Background technique [0002] With the continuous deepening of global industrialization, various industries have higher and higher requirements for wear-resistant and heat-resistant materials, and the development of new materials is more and more inclined to high alloying and compounding. At present, the main wear-resistant materials include: high manganese steel, high chromium cast iron, nickel hard cast iron and bimetallic materials. Among them, high manganese steel is resistant to impact, but not resistant to erosion, high chromium cast iron is resistant to erosion, but not resistant to impact, and nickel hard cast iron is also poor in impact resistance. At the same time, the current bimetallic process is complicated, and it needs to be smelted and cast at the same time, which is diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16
CPCB22D19/16
Inventor 李刚
Owner 北京金煤创业科技股份有限公司
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