A kind of aluminum base-steel bimetal bearing material and its preparation process

A technology of bimetallic shafts and aluminum-based alloys, which is applied to mechanical equipment, bearing components, shafts and bearings, etc., can solve the problems of energy saving and emission reduction, human body and environmental hazards, and high cost, and achieve low energy consumption for smelting and production Low cost and long service life

Active Publication Date: 2018-05-04
HENAN MECHANICAL & ELECTRICAL ENG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, copper-lead alloys are widely used as bearing materials in China. Although this bearing material has high fatigue strength, its cost is high, and it contains the polluting element lead, which is harmful to the human body and the environment to varying degrees. National Energy Conservation and Emission Reduction Requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Mix 6.30Kg K according to the molar ratio of Ti:B=1:2 2 TiF 6 -KBF 4 Mixed salt as reactant, according to the mass ratio of Al: Sn: Cu: Zn: Mn=85.0: 12: 1.2: 1.0: 0.8 preparation 10.2Kg matrix alloy, matrix alloy is made of aluminum ingot, aluminum copper zinc manganese master alloy and tin block composition; according to Na 3 AlF 6 : MgCl 2 =3:1 mass ratio to prepare 0.50Kg Na 3 AlF 6 -MgCl 2 Mixed salts as reaction aids; according to NaCl:KCl:CaF 2 =4:4:1 mass ratio to prepare 0.31Kg NaCl-KCl-CaF 2 Mixed salt is used as a refining agent, and its total amount is 3% of the mass of the matrix alloy.

[0032] (2) Melt the aluminum ingot at 700°C, and overheat it to 920°C, add the above-mentioned mixed salt and reaction aid after drying, and stir for 20 minutes to obtain 2 Granular aluminum melt, to contain endogenous TiB2 After the aluminum melt of the particles is calm and the reaction is over, the salt slag is removed; then the 2 The aluminum melt of the ...

Embodiment 2

[0038] (1) Prepare 4.6Kg K according to the molar ratio of Ti: B=1:2 2 TiF 6 -KBF 4 Mixed salt is as reactant, according to the mass ratio of Al: Sn: Cu: Zn: Mn=85.0: 12: 1.2: 1.0: 0.8 preparation 10.3Kg matrix alloy, matrix alloy is made of aluminum ingot, aluminum-copper-zinc-manganese master alloy and tin block composition; according to Na 3 AlF 6 : MgCl 2 =3:1 mass ratio to prepare 0.32Kg Na 3 AlF 6 -MgCl 2 Mixed salts as reaction aids; according to NaCl:KCl:CaF 2 =4:4:1 mass ratio to prepare 0.26Kg NaCl-KCl-CaF 2 Mixed salts are used as refining agents.

[0039] (2) Melt the aluminum ingot at 730°C, and overheat it to 930°C, add the above-mentioned mixed salt and reaction aid after drying, and stir for 15 minutes to obtain 2 Granular aluminum melt, to contain endogenous TiB 2 After the aluminum melt of the particles is calm and the reaction is over, the salt slag is removed; then the 2 The aluminum melt of the particles is cooled to 780 ° C, and the aluminum c...

Embodiment 3

[0045] (1) Prepare 8.5Kg K according to the molar ratio of Ti:B=1:2 2 TiF 6 -KBF 4 Mixed salt is as reactant, prepares 10.4Kg base alloy according to the mass ratio of Al: Sn: Cu: Zn: Mn=82.0: 15: 0.8: 1.2: 1.0, base alloy is made of aluminum ingot, aluminum-copper-zinc-manganese master alloy and tin block composition; according to Na 3 AlF 6 : MgCl 2 =3:1 mass ratio to prepare 0.76Kg Na 3 AlF 6 -MgCl 2 Mixed salts as reaction aids; according to NaCl:KCl:CaF 2 =4:4:1 mass ratio to prepare 0.36Kg NaCl-KCl-CaF 2 Mixed salts are used as refining agents.

[0046] (2) Melt the aluminum ingot at 750°C, and overheat it to 900°C, add the above-mentioned mixed salt and reaction auxiliary agent after drying, and stir thoroughly for 15 minutes to obtain endogenous TiB-containing 2 Granular aluminum melt, to contain endogenous TiB 2 After the aluminum melt of the particles is calm and the reaction is over, the salt slag is removed; then the 2 The aluminum melt of the particles...

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Abstract

The invention belongs to the technical field of bearing pad materials, and specifically discloses an aluminum-based-steel bimetallic bearing pad material and a preparation process thereof. The material is composed of an aluminum covering layer, an aluminum-based alloy layer, an aluminum transition layer and a low-carbon steel layer; among them, the aluminum-based alloy layer is an endogenous TiB2 with endogenous TiB2 particles as a reinforcement and an aluminum-tin-copper alloy as a matrix alloy. Particle-reinforced aluminum-tin-copper alloy. The preparation method comprises the following steps: (1) preparing materials; (2) preparing an aluminum-based alloy layer; (3) rolling with aluminum cladding; (4) manufacturing steel strips; (5) cold rolling and compounding. The interface bonding strength between the aluminum base alloy layer and the steel plate of the aluminum base-steel bimetallic bearing material of the present invention is high, the bearing capacity of the aluminum base-steel bimetallic bearing material is strong and the anti-friction property is good, the bearing pad works stably, has a long service life, and produces Low cost, environmental protection and no pollution.

Description

technical field [0001] The invention relates to the technical field of bearing bush materials, in particular to an aluminum-based-steel bimetallic bearing bush material and a preparation process thereof. Background technique [0002] Bearing bushes are key components for carrying movement, reducing friction and reducing wear in mechanical equipment such as internal combustion engines and presses. The quality of the bearing pad material directly affects the working stability and service life of the bearing pad. With the development of internal combustion engines in the direction of high speed, high load and environmental protection, the requirements for the performance of bearing pads are constantly increasing. Bearing pads must not only have good friction reduction and wear resistance, but also have relatively high load capacity and fatigue resistance. Need to have good economy and low carbon environmental protection. [0003] At present, copper-lead alloys are widely used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/12F16C33/14C22C21/00C22C32/00C22C1/10C22C1/02
CPCC22C1/1036C22C21/003C22C32/0073F16C33/121F16C33/122F16C33/14
Inventor 崔国明李兴霞翟德梅冯振国任泰安曾建民
Owner HENAN MECHANICAL & ELECTRICAL ENG COLLEGE
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