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Sliding bearing based on structure energizing material and preparation method thereof

A sliding bearing and energy-enabling technology, which is applied in sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as poor lubrication performance, and achieve the effects of improving anti-rust ability, suppressing fatigue cracks, and reliable use

Inactive Publication Date: 2019-12-20
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a sliding bearing based on structural energy-enabling materials, which solves the problem of poor self-lubricating performance of existing sliding bearings

Method used

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  • Sliding bearing based on structure energizing material and preparation method thereof
  • Sliding bearing based on structure energizing material and preparation method thereof
  • Sliding bearing based on structure energizing material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0047] A method for preparing a sliding bearing based on a structure-enabling material, comprising the following steps:

[0048] Step 1, melting the preset composition material into molten iron in an intermediate frequency induction furnace, the preset composition material is composed of the following components: C: 3.4%-3.6%, Si: 1.6-1.7%, Mn: ≤0.3%, P: ≤0.015%, S: ≤0.015%, Cr: ≤0.3%, other alloying elements: ≤0.5%, the balance is Fe, of which, the carbon content is 99.95%-100% of the theoretical carbon equivalent; add inoculants to molten iron and spheroidizing agent, so that the final silicon content of molten iron after inoculation and spheroidizing treatment is 2.7±0.1%, and the residual magnesium content is 0.04±0.005%;

[0049] The inoculant can promote the spheroidization of graphite, reduce the tendency of whitening, improve the morphology and distribution of graphite, increase the number of eutectic clusters, and refine the matrix structure. Generally, it takes 5-8 m...

Embodiment

[0060] Make a self-lubricating sliding bearing with an outer diameter of 100mm, a wall thickness of 6mm, and a length of 120mm.

[0061] Select QT500-10 grade ductile iron material to draw hollow pipes with an outer diameter of 103mm and an inner diameter of 83mm. The inner diameter of the mold graphite bushing is 103.5mm.

[0062] The casting materials (60% Q14# bread iron, 20% low-carbon steel leftovers, 20% nodular iron return material) are melted into molten iron in an electric furnace, and adjusted to the mass percentage of the following components: C: 3.4%-3.6% , Si: 1.6-1.7%, Mn: ≤0.3%, P: ≤0.015%, S: ≤0.015%, Cr: ≤0.3%, other alloying elements: ≤0.5% and the balance is Fe, the mass of each component The percentages add up to 100%. Wherein, the carbon content is 99.95%-100% of the theoretical carbon equivalent. Add inoculants and nodulizers to the molten iron before pouring, so that the final silicon content of the molten iron after inoculation and nodularization tre...

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Abstract

The invention discloses a sliding bearing based on a structure energizing material. The sliding bearing is prepared from the structure energizing material. The matrix structure of the sliding bearingis austenite and graphite spheres. The diameter of graphite spheres is less than or equal to 25 micrometers, the spheroidization rate is 100%, and the density of graphite spheres is 300-600 / mm<2>. According to the preparation method, the components of molten iron are timely regulated and controlled to be within a small range of eutectic components by observing the color of a profile which is justpulled out by one step, so that the spheroidization rate is remarkably increased, and the situation that large blocks of primary graphite appear to cause mechanical property damage is avoided; and thesliding bearing with self-lubricating property is prepared through rough machining and grinding machining. The self-lubricating sliding bearing has self-lubricating property, no oil filling hole or no oil guide groove needs to be machined, sound absorption and shock absorption are realized, the service life is long, and a copper or steel sliding bearing can be replaced.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of sliding bearings, and in particular relates to a sliding bearing based on a structure-enabling material. The invention also relates to a method for preparing a sliding bearing based on a structure-enabling material. Background technique [0002] Sliding bearings are mechanical parts used to support shaft parts and enable relative rotation or linear sliding between bearing surfaces. Sliding friction has much greater frictional resistance than rolling friction, so sliding bearings require good friction reduction, wear resistance, anti-occlusion and compressive strength more than rolling bearings, and also require good friction compliance, running-in performance, and corrosion resistance. Performance, anti-fatigue, to reduce friction and wear, prolong service life. [0003] For a long time, the sliding bearings used in large quantities are made of copper, steel and other materials, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/10C21C1/10C21D1/20C21D1/26C21D5/00C21D9/40C22C37/04C22C37/06C22C37/10F16C17/00
CPCC21C1/105C21D1/20C21D1/26C21D5/00C21D9/40C22C33/10C22C37/04C22C37/06C22C37/10F16C17/00
Inventor 许旸蒋百铃刘保建颜国君杜玉洲王旭翟瑞锋
Owner XIAN UNIV OF TECH
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