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A kind of copper alloy filling device of antifriction layer of bearing bush and a kind of preparation method of bimetallic composite material of bearing bush

A technology of copper alloy and bimetal, which is applied in the preparation of bimetallic composite materials for bearing pads, and the field of copper alloy filling devices for anti-friction layer of bearing pads, which can solve the problems of insufficient pouring, irregular flow of copper alloy melt, and increased difficulty in processing copper alloy bearing pads. Raw material waste and other issues

Active Publication Date: 2020-06-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of pouring and compounding, the copper alloy melt flows irregularly, and casting defects such as cold shut and insufficient pouring are prone to occur.
In addition, the thickness of the alloy layer obtained by this method is not uniform. For example, the thickness difference between the middle layer and the edge of the composite casting slab of the bearing bush can reach 2-6mm, which will increase the difficulty of later processing of the bearing bush and waste the raw materials of the copper alloy layer.

Method used

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  • A kind of copper alloy filling device of antifriction layer of bearing bush and a kind of preparation method of bimetallic composite material of bearing bush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Use 10# high-quality carbon steel plate with a thickness of 3mm and a width of 200mm, and use NaOH and HCl to clean the surface oxide and oil;

[0055] (2) Install the copper alloy filling device for the friction-reducing layer of the bearing bush, in which the apex angle of the triangular flow channel is 20°, and three distribution strips are installed in the triangular flow channel;

[0056] (3) Weigh the raw material cathode copper (purity 99.97wt.%), pure lead (purity 99.9wt.%), pure tin (purity 99.9wt.%), and the composition is Cu-24wt.%Pb-2wt.% The copper alloy raw material of Sn is smelted at 1100°C in an intermediate frequency induction melting furnace to produce a copper alloy melt with uniform composition;

[0057] (4) Heat the temperature of the heating device to 1100°C and the temperature of the heating coil to 600°C. Under the protection of Ar gas (the flow rate is 20 / min), open the flow control system to spread the copper alloy melt through the diversi...

Embodiment 2

[0062] (1) Use 10# high-quality carbon steel plate with a thickness of 3mm and a width of 200mm, and use NaOH and HCl to clean the surface oxide and oil;

[0063] (2) Install the copper alloy filling device for the friction-reducing layer of the bearing bush, in which the apex angle of the triangular flow channel is 30°, and 5 distribution strips are installed in the triangular flow channel;

[0064] (3) Weigh the raw material cathode copper (purity 99.97wt.%), pure lead (purity 99.9wt.%), pure tin (purity 99.9wt.%), and the composition is Cu-24wt.%Pb-2wt.% The copper alloy raw material of Sn is smelted at 1200°C in an intermediate frequency induction melting furnace to produce a copper alloy melt with uniform composition;

[0065] (4) Heat the temperature of the heating device to 1150°C and the temperature of the heating coil to 700°C. Under the protection of Ar gas (the flow rate is 30 / min), open the flow control system to spread the copper alloy melt through the diversion s...

Embodiment 3

[0069](1) Use 10# high-quality carbon steel plate with a thickness of 3mm and a width of 200mm, and use NaOH and HCl to clean the surface oxide and oil;

[0070] (2) Install the copper alloy filling device for the friction-reducing layer of the bearing bush, in which the apex angle of the triangular flow channel is 50°, and 8 flow distribution strips are installed in the triangular flow channel;

[0071] (3) Weigh the raw material cathode copper (purity 99.97wt.%), pure lead (purity 99.9wt.%), pure tin (purity 99.9wt.%), and the composition is Cu-24wt.%Pb-2wt.% The copper alloy raw material of Sn is smelted at 1250°C in an intermediate frequency induction melting furnace to produce a copper alloy melt with uniform composition;

[0072] (4) Heat the temperature of the heating device to 1150°C and the temperature of the heating coil to 800°C. Under the protection of Ar gas (the flow rate is 35 / min), open the flow control system to spread the copper alloy melt through the diversi...

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Abstract

The invention provides a copper alloy filling device for a friction-reducing layer of a bearing pad and a preparation method of a bimetallic composite material for a bearing pad, belonging to the technical field of metal alloy materials. The copper alloy mold filling device for the anti-friction layer of the bearing pad provided by the invention includes a copper alloy smelting device and a copper alloy bearing device. The copper alloy raw material can be smelted through a melting furnace in the copper alloy smelting device in the invention to obtain a copper alloy melt; The invention utilizes a flow control device to control the outflow rate of the melt. When the fluid passes through the flow channel of the diversion structure, the diversion effect of the diverter bar can make the copper alloy melt evenly spread on the copper alloy carrying device, and better control The uniformity of the thickness of the copper alloy in the anti-friction layer avoids the cold shut and insufficient pouring of the bearing material; at the same time, due to the shunt effect of the shunt bar, the impact of the copper alloy melt on the bearing matrix can be reduced, thereby reducing the copper alloy melt. Body oxide inclusions.

Description

technical field [0001] The invention relates to the technical field of metal alloy materials, in particular to a copper alloy filling device for a friction-reducing layer of a bearing pad and a method for preparing a bimetallic composite material for a bearing pad. Background technique [0002] With the development of various motor vehicle engines towards high speed, heavy load, and high power, the quality requirements for bearing pad materials are becoming more and more stringent. [0003] At present, the widely used bearing material is copper-lead-tin alloy / carbon steel bearing material, and its main preparation methods include static casting method, centrifugal casting method, particle induction centrifugal casting method, powder metallurgy sintering and rolling compounding and other methods. However, the above methods all have their own weaknesses. For example, there are casting defects and Pb element segregation in the static casting method. The centrifugal casting meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/01C22C9/08B22D19/16F16C33/12F16C33/14
CPCB22D11/01B22D11/004C22C9/08B22D19/16F16C33/121F16C33/14F16C2204/10F16C2220/02
Inventor 李廷举接金川王同敏曹志强卢一平康慧君张宇博陈宗宁郭恩宇
Owner DALIAN UNIV OF TECH
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