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Nano composite abrasion-resistant alloy for abrasion-resistant steel and preparation technology for nano composite abrasion-resistant alloy

A wear-resistant alloy and nano-composite technology, applied in the field of nano-composite wear-resistant alloys, can solve the problems of short service life of wear-resistant steel parts, achieve the effects of improving wear resistance, convenient use, and prolonging service life

Active Publication Date: 2015-01-07
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a nano-composite wear-resistant alloy for wear-resistant steel and its preparation process, the purpose of which is to solve the short service life of wear-resistant steel components problem; at the same time, the consumption of wear-resistant steel can be reduced

Method used

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  • Nano composite abrasion-resistant alloy for abrasion-resistant steel and preparation technology for nano composite abrasion-resistant alloy
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  • Nano composite abrasion-resistant alloy for abrasion-resistant steel and preparation technology for nano composite abrasion-resistant alloy

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Embodiment 1

[0034] Example 2:

[0035] The invention belongs to a nano-composite wear-resistant alloy for wear-resistant steel. The wear-resistant alloy is prepared by compounding nano-ceramic powder and metal powder. The total weight of the prepared wear-resistant alloy is 5000g, and the ratio of various raw materials is: the total weight of nano-ceramic powder is 1000g, of which WC:TiC:SiC:Ce 2 O: Y 2 o 3 The ratio is 1: 0.15 : 0.25 : 0.25 : 0.15, the sum of the weight of the following four items is 444.44g; the rest is nano WC powder. The ratio in the metal powder is: reduced iron powder: nickel-chromium composite powder: aluminum powder, manganese powder, magnesium powder = 1:0.7:0.025 (0.01+0.01+0.005); among them, the weight of aluminum, manganese, and magnesium powder The sum is 57.97g; the reduced iron powder is 2318.84g, and the nickel-chromium composite powder is 1623.19g.

Embodiment 2

[0037] Example 3:

[0038] A nano-composite wear-resistant alloy for wear-resistant steel is prepared by compounding nano-scale ceramic powder and various metal powders. The nano-ceramic powder is composed of nano-scale WC, TiC, SiC, Ce 2 O, Y 2 o 3 Composition, the particle size of nano-ceramic powder is 80-500nm; the sum of their weight accounts for 6% of the total weight of wear-resistant alloy, and their weight ratio relationship is: WC:TiC:SiC:Ce 2 O: Y 2 o 3 = 1:0.05:0.32:0.01:0.01; 5% free carbon in WC; TiC particle size less than 0.5μm; WC, SiC, Ce 2 O, Y 2 o 3 The particle size of the powder is nanoscale. The metal powder is a mixture of reduced iron powder, nickel-chromium powder, manganese, aluminum, and magnesium powder, and the amount added accounts for 94% of the total weight of the wear-resistant alloy; iron, nickel-chromium, aluminum, manganese, and magnesium The ratio of powder mixing is iron powder: nickel-chromium powder: aluminum powder, manganese ...

Embodiment 3

[0040] (2) Do plastic discharge treatment on the body, that is, use an ordinary electric furnace to heat the body to 200°C under air conditions and keep it warm for 300 minutes to form an oxide film on the surface of the metal particles and discharge colloidal polyethylene at the same time Alcohol butyral;

[0041] (3) Then sinter the green body. The sintering is completed under the condition of atmosphere protection. The protection gas is argon, the sintering temperature is 900°C, and the heat preservation is 240 minutes. After sintering, the sintered body is made into powder, which is the wear-resistant alloy product.

[0042] In the glue prepared by nano-scale ceramic powder, the speed of slow stirring at the beginning is 80 rpm; after adding all the metal powder, the speed of the mixer is adjusted to 300 rpm.

[0043] The amount of absolute ethanol is determined by the density of the powder, generally add 150ml of absolute ethanol per 100g of powder.

[0044] Example 4: ...

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Abstract

The invention relates to a nano composite ceramic abrasion-resistant alloy for abrasion-resistant steel and a preparation technology for the nano composite ceramic abrasion-resistant alloy. The abrasion-resistant alloy is formed by composition of ceramic powder and metal powder, wherein the ceramic powder consists of nano-scale WC, nano-scale TiC, nano-scale SiC, nano-scale Ce2O and nano-scale Y2O3, and the sum of weight of the nano-scale WC, the nano-scale TiC, the nano-scale SiC, the nano-scale Ce2O and the nano-scale Y2O3 accounts for 6-38% of the total weight of the abrasion-resistant alloy; the metal powder is formed by mixing of reduced iron powder, nickel-chromium powder, manganese powder, aluminum powder and magnesium powder, and the addition amount accounts for 62-94% of the total weight of the abrasion-resistant alloy; and the abrasion-resistant alloy is prepared with procedures of mixing, preforming, oxidization, sintering and the like. With the adoption of the abrasion-resistant alloy and the preparation technology for the abrasion-resistant alloy, the technical problem of short service lives of abrasion-resistant steel components is solved, and meanwhile, the consumption of the abrasion-resistant steel can be reduced.

Description

technical field [0001] The invention relates to a nano-composite wear-resistant alloy for wear-resistant steel (abbreviation: wear-resistant alloy, the same below) and its preparation process, especially a new type of alloy used in wear-resistant steel and its preparation method. Background technique [0002] Wear-resistant steel castings play an important role in mining, construction, machinery and other fields. Every year due to wear and tear, there is a huge consumption of materials. At the same time, the efficiency of the complete set of equipment is greatly reduced due to the short service life of wear-resistant workpieces and frequent replacement of parts. It is generally believed that WC is very effective in improving the wear resistance of steel, but because its density is twice as high as that of steel, strong segregation occurs, resulting in severely uneven wear resistance. In the invention, the raw material with high wear resistance and high density is made into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C30/00C22C38/28C22C33/02C22C1/05
Inventor 韩阳韩亚玲张爱玲张志涛毛亚男刘伟男
Owner SHENYANG POLYTECHNIC UNIV
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