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A high-strength friction-reducing and wear-resistant manganese-aluminum bronze alloy

A manganese-aluminum bronze and alloy technology, applied in the field of high-strength anti-friction and wear-resistant manganese-aluminum bronze alloy, can solve the problems of decreased fatigue resistance, increased segregation phenomenon, and high price of tin, and achieves good anti-seizure and low dry friction Factor effect

Inactive Publication Date: 2016-07-06
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the content of tin or lead in copper alloys and aluminum alloys will increase the anti-adhesion, compliance and embedding properties of the alloys, but the fatigue resistance will decrease, the manufacturability will deteriorate, and the segregation phenomenon will increase; secondly, copper-based alloys and aluminum-based alloys Most of the alloys contain toxic metals such as lead or cadmium, which are prone to environmental pollution; and the price of tin is relatively expensive, which increases the production cost of the alloy

Method used

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  • A high-strength friction-reducing and wear-resistant manganese-aluminum bronze alloy
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  • A high-strength friction-reducing and wear-resistant manganese-aluminum bronze alloy

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Experimental program
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Effect test

Embodiment 1

[0060] The raw materials are mixed according to the mass percentage: Mn8%, Al8%, Fe2.5%, Zn2.5%, Ce0.6%, and the balance Cu is smelted in a vacuum induction furnace at a melting temperature of 1230°C and kept for 10 minutes. Then, the alloy liquid with a pouring temperature of 1150°C is poured into a graphite mold with a diameter of 40 mm, and naturally cooled to obtain a circular ingot with a diameter of 40 mm; the alloy is β-Cu 3 The microhardness, tensile strength and elongation values ​​of the Al single-phase solid solution structure are shown in Table 2; the friction and wear properties are shown in Table 3.

Embodiment 2

[0062] The raw materials are mixed according to mass percentage: Mn8.5%, Al8.5%, Fe2%, Si0.5%, Zn2%, Ce0.5%, B0.1%, and the balance Cu; smelting in a vacuum induction furnace, The melting temperature is 1240°C, and the temperature is kept for 10 minutes; then, pour the alloy solution with a pouring temperature of 1160°C into a graphite mold with a diameter of 40mm, and cool naturally to obtain a circular ingot with a diameter of 40mm; the alloy is β-Cu 3 The microhardness, tensile strength and elongation values ​​of the Al single-phase solid solution structure are shown in Table 2; the friction and wear properties are shown in Table 3.

Embodiment 3

[0064] The raw materials are mixed according to mass percentage: Mn9%, Al9%, Fe2%, Zn2%, Ce0.7%, and the balance is Cu; it is melted in a vacuum induction furnace at a melting temperature of 1240°C and kept for 12 minutes; then, pouring The alloy liquid at a temperature of 1170°C is poured into a graphite mold with a diameter of 40mm, and naturally cooled to obtain a circular ingot with a diameter of 40mm; the alloy is β-Cu 3 The microhardness, tensile strength and elongation values ​​of the Al single-phase solid solution structure are shown in Table 2; the friction and wear properties are shown in Table 3.

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Abstract

A high-strength antifriction and wearable aluminum-manganese bronze alloy is prepared by using Mn, Al, Fe, Zn, Ce, Si, B and Cu as ingredients, and performing casting, hot forging or hot rolling machine-forming; the mass percent of all elements in the high-strength antifriction and wearable aluminum-manganese bronze alloy is 8-10 percent of Mn, 8-10 percent of Al, 1.5-2.5 percent of Fe, 1.5-2.5 percent of Zn, 0.4-0.8 percent of Ce, 0-3 percent of Si, 0-0.4 percent of B and the balance of Cu. The high-strength antifriction and wearable aluminum-manganese bronze alloy overcomes the defects that babbitt metal is low in fatigue strength, and poor in heat resistance, and the adhesion resistance, the compliance, the embedded hidden performance of a copper base alloy and an aluminium base alloy are easily improved in a bad lubrication environment, solves the traditional industry problem that toxic metal such as lead and cadmium causes environmental pollution easily, has relatively high mechanical strength and carrying capacity, is suitable for manufacturing ideal high-strength antifriction and wearable material of components of a friction motion pair under the complex working conditions, such as high speed, heavy load, high temperature and corrosive mediums in industries, such as machinery, metallurgy, energy and chemical engineering, and for example, is suitable for manufacturing a sliding bearing, a worm gear pair, a sliding block, a shaft sleeve, a transmission nut and other components.

Description

technical field [0001] The invention relates to a high-strength friction-reducing and wear-resistant manganese-aluminum bronze alloy. Background technique [0002] In the existing metallurgy, energy, mining, transportation and other mechanical equipment, there are various friction pairs, such as: sliding bearings, gears, worm gears, guide rails, transmission nuts, etc. In order to improve efficiency and maintain accuracy, it is necessary to reduce friction due to relative motion The resulting energy loss and wear require the material of the friction pair to have a low friction coefficient and high wear resistance. At present, the commonly used antifriction metal materials mainly include Babbitt alloy, copper-based alloy and aluminum-based alloy. Babbitt alloy is a traditional bearing alloy material, which has the characteristics of good anti-friction, good compliance to the journal, good embedding, high corrosion resistance, and good adhesion to steel and bronze; but Babbit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/05C22C9/01
CPCC22C9/01C22C9/05
Inventor 彭成章向浪曹获熊伟周知进
Owner HUNAN UNIV OF SCI & TECH
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