Method for manufacturing bi-metal composite material by pouring two layers of molten metal with cooling speed adjustable

A composite material and bimetal technology, which is applied in the field of bimetal composite materials with adjustable cooling rate two-liquid casting, can solve the problems of low qualification rate of bimetal composite and excessive fusion amount, etc., and is convenient for industrialized large-scale production. Expanded, easy-to-control effects

Inactive Publication Date: 2017-05-31
邢振国
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the double-liquid composite fusion amount is too large or the composite surface is delaminated, resulting in a low pass rate of bimetallic composites, the invention provides a dual-liquid casting method for bimetallic composite materials with adjustable cooling speed

Method used

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  • Method for manufacturing bi-metal composite material by pouring two layers of molten metal with cooling speed adjustable
  • Method for manufacturing bi-metal composite material by pouring two layers of molten metal with cooling speed adjustable
  • Method for manufacturing bi-metal composite material by pouring two layers of molten metal with cooling speed adjustable

Examples

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Effect test

Embodiment 1

[0019] Example 1: 500×500×50mm composite wear-resistant plate

[0020] The bimetal composite wear-resistant plate is composed of low-carbon cast steel and high-chromium cast iron. The thickness of the high-chromium cast iron layer is 25-35mm, and the hardness requirement is ≥55HRC. The thickness of the low-carbon cast steel is 15-25mm, and the impact toughness is not less than 50J. .

[0021] Process analysis: Comparing the composition of low-carbon cast steel and high-chromium cast iron in the table below, it can be seen that the composition of Si, Mn, P, and S after fusion has little change, mainly due to the change of C and Cr. From the physical properties of the two, the thermal conductivity of low-carbon cast steel is higher than that of high-chromium cast iron. The melting point of low-carbon cast steel is about 1590-1610°C, and the melting point of high-chromium cast iron is about 1400-1450°C. If the composite wear-resistant plate requires welding connection, in order ...

Embodiment 2

[0029] Example 2: Bimetal Composite Hammer

[0030] The product in this embodiment is a crusher hammer head, the hammer head part is made of high manganese steel, the hammer handle part is made of low carbon cast steel, and the size of the hammer head part is 100×240×225 mm.

[0031] See attached for gating system image 3 and 4 , including water inlet pipe 1, first layer metal runner 2, cold iron 3, riser (observation hole) 4, sand mold 5, cavity 6, paint 7, water outlet pipe 8, second layer metal runner 9 and overflow Mouth 10. Two cold irons 3 are symmetrically arranged, and each cold iron is connected to a water inlet pipe 1 and an outlet pipe 8. The diameter of the water inlet pipe is Φ16mm, and the diameter of the water outlet pipe is Φ24mm. The cross-sectional area ratio of the two is 1:2.25. The outlet pipe 8 has a length of 300mm, and the outlet extends into a closed water tank placed underground. The air volume of the water tank is not less than 3m³, and the total...

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Abstract

The invention discloses a method for manufacturing a bi-metal composite material by pouring two layers of molten metal with the cooling speed adjustable. The method comprises the steps that after the first layer of molten metal is poured, water is introduced into a chiller for cooling, and the cooling speed of the first layer of molten metal is adjusted by adjusting the pressure and flow of the cooling water in the chiller or controlling the introduction time of the cooling water; and the second layer of molten metal is poured at the high temperature so that the first layer of molten metal can be fully fused by the second layer of molten metal, due to the fact that controlled cooling measures are taken for the first layer of molten metal, fusion of the first layer of metal achieved through the second layer of metal is guaranteed, superfusion is also prevented, constituents of the second layer of metal are guaranteed, and the bi-metal composite material acquired through metallurgical bonding is obtained. By means of the process method, the qualification rate of composting of the two layers of molten metal is greatly increased; process parameters are simplified; and industrialized production can be conducted conveniently.

Description

technical field [0001] The invention relates to a manufacturing process of a bimetallic composite material. The bimetallic composite material is cast by casting two layers of metal liquids separately and controlling the composition of the fusion layer to ensure the components. Background technique [0002] Casting bimetallic composite materials mostly use solid-liquid composite and liquid-liquid composite, liquid-liquid composite is mostly used for centrifugal casting of bimetallic composite pipes, solid-liquid composite is mostly used for bimetallic composite materials of various shapes, these two processes have their own Flaws and pros. [0003] Solid-liquid compounding is suitable for bimetallic workpieces with irregular composite surfaces, but since the liquid metal can hardly melt the solid metal, the composition of the bimetallic material, especially the composition of the second layer of iron-based metal, is guaranteed, but the bimetallic workpiece produced by this me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B22D15/00
CPCB22D19/16B22D15/00
Inventor 邢振国齐自新常连波李美霞
Owner 邢振国
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