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Preparation method for heavy-load high-power vehicle engine high-purity aluminum-tin bearing materials

A vehicle engine, aluminum-tin alloy technology, applied in the direction of mechanical equipment, bearing components, shafts and bearings, can solve the problems of undiscovered patent documents, etc., to refine alloy grains, improve anti-seizure, mechanical properties high effect

Active Publication Date: 2012-12-26
GUANGZHOU LIZHONG JINSHAN ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Through the patent search, no published patent documents related to the application of the present invention have been found

Method used

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  • Preparation method for heavy-load high-power vehicle engine high-purity aluminum-tin bearing materials
  • Preparation method for heavy-load high-power vehicle engine high-purity aluminum-tin bearing materials
  • Preparation method for heavy-load high-power vehicle engine high-purity aluminum-tin bearing materials

Examples

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Effect test

Embodiment 1

[0027] A method for preparing a high-purity aluminum-tin alloy bearing material for a heavy-duty high-power vehicle engine, the steps are:

[0028] (1) The basic material elements are based on the mass percentage Sn: 3.7%, Cu: 3.5%, and Al is the balance. Specifically, the total weight of this embodiment is calculated according to 80Kg, and 2.9Kg of industrial pure metal tin and 2.8Kg of first-grade electrolytic copper are weighed , 74.30Kg of aluminum ingots for extra-grade remelting;

[0029] (2) Weigh 0.8g of first-grade potassium fluorotitanate;

[0030] (3) Put the industrially pure metal tin, first-grade electrolytic copper, aluminum ingot for extra-grade remelting, first-grade potassium fluorotitanate and casting mold in step (1) and step (2) into a constant temperature waste heat drying at a temperature of 200°C Dry in the oven for 2h;

[0031] (4) Put the aluminum ingot for remelting in step (3) into a CX-GR-150 industrial electric furnace, set the temperature of th...

Embodiment 2

[0041] A method for preparing a high-purity aluminum-tin alloy bearing material for a heavy-duty high-power vehicle engine, the steps are:

[0042] ⑴Basic material elements are based on mass percentage Sn: 3.5, Cu: 3.5, and Al is the balance, specifically: the total weight is calculated as 65Kg, weighing 2.3Kg of industrial pure metal tin, 2.3Kg of first-grade electrolytic copper, and special first-grade remelting Use aluminum ingot 60.4Kg;

[0043] (2) Weigh 0.6g of first-grade potassium fluorotitanate;

[0044] (3) Put the industrially pure metal tin, first-grade electrolytic copper, aluminum ingot for special second-grade remelting, first-grade potassium fluorotitanate, and casting mold in steps (1) and (2) into a constant temperature waste heat drying at a temperature of 200°C Dry in the oven for 2h;

[0045] (4) Put the aluminum ingot for remelting in step (3) into a CX-GR-150 industrial electric furnace, set the temperature of the industrial electric furnace to 800°C, ...

Embodiment 3

[0055] A method for preparing a high-purity aluminum-tin alloy bearing material for a heavy-duty high-power vehicle engine, the steps are:

[0056] ⑴Basic material elements are based on mass percentage Sn: 3.9, Cu: 3.3, and Al is the balance, specifically: the total weight is calculated as 95Kg, weighing 3.7Kg of industrial pure metal tin, 3.1Kg of first-grade electrolytic copper, and special first-grade remelting Use aluminum ingot 88.2Kg;

[0057] (2) Weigh 0.7g of first-grade potassium fluorotitanate;

[0058] (3) Put the industrially pure metal tin, first-grade electrolytic copper, aluminum ingot for special second-grade remelting, first-grade potassium fluorotitanate, and casting mold in steps (1) and (2) into a constant temperature waste heat drying at a temperature of 200°C Dry in the oven for 2h;

[0059] (4) Put the aluminum ingot for remelting in step (3) into a CX-GR-150 industrial electric furnace, set the temperature of the industrial electric furnace to 800°C, ...

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Abstract

The invention relates to a preparation method for heavy-load high-power vehicle engine high-purity aluminum-tin bearing materials. The preparation method includes the detailed steps of weighing industrial pure metallic tin, first-level electrolytic copper and special second-level aluminum ingots for re-melting in proportion; weighing first-level potassium fluotitanate; putting the first-level potassium fluotitanate into a constant temperature preheating drying furnace for drying; putting the special second-level aluminum ingots for re-melting into an industrial furnace; adding the industrial pure metallic tin and first-level electrolytic copper after all the special second-level aluminum ingots in the furnace are smelted; sampling and detecting alloy contents; putting the first-level potassium fluotitanate into aluminium alloy melt; and casting. According to the aluminum-tin bearing materials prepared in the method, strength reaches 140-165 megapascals, elongation reaches 15-19 %, brinell hardness reaches 45-51, fatigue strength reaches 90-106 megapascals, abrasion loss reaches 6.7-7 * 10-4 grams, anti-seizure adhesiveness reached the second level, and friction coefficient is 0.038-0.042. Therefore, the prepared bearing materials are high in bearing capacity, are good in abrasion-resistance, antifriction performance and anti-seizure adhesiveness, meet the requirements of a heavy-load high-power vehicle engine, and have broad application prospects.

Description

technical field [0001] The invention belongs to the field of metallurgy of nonferrous metal materials, and relates to an aluminum-tin alloy material for manufacturing bearings, in particular to a preparation method of a high-purity aluminum-tin alloy bearing material for a heavy-duty high-power vehicle engine. Background technique [0002] Sliding bearings are very important frictional and vulnerable parts in automobiles (especially engines), and form important friction pairs with engine crankshafts, piston pins, camshafts and certain shaft parts on the chassis of automobiles. The performance of sliding bearing materials is in a certain range To a certain extent, it affects or determines the life, reliability and some major economic and technical indicators of automobiles and engines. With the development of the automobile industry and the continuous strengthening and improvement of the performance of automobile engines, the application of aluminum-tin alloys with high load-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22C1/06F16C33/06
Inventor 李志琴田红杰霍慧娟翟盼盼齐宝莲杨少云
Owner GUANGZHOU LIZHONG JINSHAN ALLOY
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