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A kind of aluminum-tin-copper alloy-based bearing material and its preparation method

A technology of tin-copper alloy and base shaft is applied in the field of preparation of aluminum-tin-copper alloy base bearing material, which can solve the problems of low bearing capacity of high-tin aluminum alloy, high hardness of low-tin aluminum alloy and high processing cost, and achieve low melting cost. , The effect of good friction reduction and low production cost

Inactive Publication Date: 2017-09-12
HENAN MECHANICAL & ELECTRICAL ENG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the traditional bearing materials, Babbitt alloy has good anti-friction performance and strong surface adaptability, but its bearing capacity is low, the cost is high, and it contains a large amount of polluting heavy metal elements such as lead and cadmium; Good friction, but its cost is high, and the lead element in lead bronze pollutes the environment; among aluminum-based bearing materials, high-tin aluminum alloy has low bearing capacity, complicated process, and high processing cost, and low-tin aluminum alloy has high hardness, but it needs to be used Its surface is coated with a layer of lead-containing anti-friction alloy layer, which is not only complicated in process, high in cost, but also pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Prepare 6.30Kg of K according to the molar ratio of Ti:B of 1:2 2 TiF 6 -KBF 4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required to prepare a 10.3Kg base alloy for a mass ratio of 85.0:12:1.2:1.0:0.8, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12Cu master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 710°C. The mass ratio of mixed salt to matrix alloy is 1:1.63.

[0025] According to Na 3 AlF 6 : MgCl 2 Prepare 0.50Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2 The mixed salt...

Embodiment 2

[0029] Prepare 4.6Kg K according to the molar ratio of Ti:B 1:2 2 TiF 6 -KBF4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required to prepare a 10.3Kg base alloy for a mass ratio of 91.4:6:1.5:0.6:0.5, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12Cu master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 750°C. Wherein, the mass ratio of the mixed salt to the matrix alloy is 1:2.21.

[0030] According to Na 3 AlF 6 : MgCl 2 Prepare 0.32Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2 The mix...

Embodiment 3

[0034] Prepare 8.5Kg K according to the molar ratio of Ti:B 1:2 2 TiF 6 -KBF 4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required for the mass ratio of 82.0:15:0.8:1.2:1.0 to prepare 10.4Kg base alloy, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12 copper master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 725°C. Wherein, the mass ratio of the mixed salt to the matrix alloy is 1:1.22.

[0035] According to Na 3 AlF 6 : MgCl 2 Prepare 0.76Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2...

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Abstract

The invention belongs to the technical field of bearing pad materials, and discloses a preparation method of an aluminum-tin-copper alloy-based bearing pad material. The material uses endogenous TiB2 particles as a reinforcement, and an aluminum-tin-copper alloy as a matrix alloy; the main element of the matrix alloy is aluminum, and contains tin, copper, zinc, and manganese; the preparation method includes the following steps: (1) melting aluminum ingots, Get aluminum melt, add reactant K TiF6-KBF4 mixed salt, reaction aid Na3AlF6-MgCl Mixed salt, obtain the aluminum melt that contains endogenous TiB2 particle; (2) add aluminum in the aluminum melt that contains endogenous TiB2 particle Copper-zinc-manganese master alloy and tin block to obtain an alloy melt; (3) using NaCl-KCl-CaF2 mixed salt as a refining agent, refining the alloy melt, and pouring it into a mold to obtain the product. The aluminum-tin-copper alloy-based bearing material of the invention has excellent comprehensive performance, low production cost, and is environmentally friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of bearing pad materials, in particular to a preparation method of an aluminum-tin-copper alloy-based bearing pad material. 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. Among the traditional bearing materials, Babbitt alloy has good anti-friction performance and strong surface adaptability, but its bearing capacity is low, the cost is high, and it contains a large amount of polluting heavy metal elements such as lead and cadmium; Good friction, but its cost is high, and the lead element in lead bronze pollutes the environment; among aluminum-based bearing materials, high-tin aluminum alloy has low bearing capacity, complicated process, and high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/10F16C33/12
CPCF16C33/121C22C1/1036C22C21/003C22C32/0073F16C2204/22C22C1/1052
Inventor 崔国明翟德梅李兴霞冯振国任泰安曾建民
Owner HENAN MECHANICAL & ELECTRICAL ENG COLLEGE
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