Surfacing wear-resistant layer on surface of 40Cr steel and preparation method thereof

A surface surfacing and wear-resistant layer technology, applied in the coating, metal material coating process, etc., can solve problems such as component cracks, fracture failures, etc., to improve surface hardness, increase service life, excellent wear resistance and corrosion resistance performance effect

Inactive Publication Date: 2019-07-23
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 40Cr steel generally bears a large load, wear and corrosion due to

Method used

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  • Surfacing wear-resistant layer on surface of 40Cr steel and preparation method thereof
  • Surfacing wear-resistant layer on surface of 40Cr steel and preparation method thereof
  • Surfacing wear-resistant layer on surface of 40Cr steel and preparation method thereof

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Effect test

preparation example Construction

[0054] The preparation method of above-mentioned a kind of 40Cr steel surface surfacing wear-resistant layer, concrete steps are as follows:

[0055] Step 1: Weighing the raw material powder required for preparing the wear-resistant layer;

[0056] Weigh the raw material powders required for the preparation of Fe-based coatings in the following mass percentages: carbon powder 0.1%-0.2%, chromium powder 15.5%-17%, silicon powder 1%-1.5%, molybdenum powder 0.1%-0.2%, nickel Powder 1.5%-2.0%, iron powder 79%-81%, the sum of the mass percentages of the above components is 100%;

[0057] Or take by weighing the raw material powder required for preparing Ni-based coating according to the following mass percentage: carbon powder 0.2%-0.5%, chromium powder 5%-7%, silicon powder 0.1%-1%, boron powder 0.1%-1%, Nickel powder 91%-93%, iron powder 0.4%-0.6%, the sum of the mass percentages of the above components is 100%;

[0058] Or weigh the raw material powder required for the prepara...

Embodiment 1

[0082] A kind of preparation method of surfacing welding wear-resistant layer on 40Cr steel surface, concrete steps are as follows:

[0083] Step 1: take by weighing the raw material powder needed for preparing Fe-based coating by the following mass percentage: (wherein the carbon powder particle size is 100 orders, all the other are 60 orders), carbon powder 0.1%, chromium powder 16.5%, silicon powder 1.5% , molybdenum powder 0.1%, nickel powder 1.5%, iron powder 80.3%, the sum of the mass percentages of the above components is 100%;

[0084] Step 2: Calculate the mass of the required corresponding ball milling beads according to the mass of other raw material powders other than carbon powder weighed in step 1. The mass ratio of each raw material powder to ball milling beads is 1:20, wherein the diameter of the ball milling beads Including three specifications of 6mm, 8mm, and 10mm. The ratio of the number of beads with three different diameters during the ball milling proces...

Embodiment 2

[0088] A kind of preparation method of surfacing welding wear-resistant layer on 40Cr steel surface, concrete steps are as follows:

[0089] Step 1: Take Fe-based powder by mass percentage (wherein the carbon powder particle size is 100 mesh, all the other are 60 mesh), carbon powder 0.2%, chromium powder 17%, silicon powder 1%, molybdenum powder 0.2%, nickel powder 1.6% %, iron powder 79%, the sum of the mass percentages of the above components is 100%;

[0090] Step 2: Calculate the mass of the required corresponding ball milling beads according to the mass of other raw material powders other than carbon powder weighed in step 1. The mass ratio of each raw material powder to ball milling beads is 1:20, wherein the diameter of the ball milling beads Including three specifications of 6mm, 8mm, and 10mm. The ratio of the number of beads with three different diameters during the ball milling process is 1:1:1. Put each raw material powder on weighing paper and wet it with absolut...

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Abstract

The invention discloses a surfacing wear-resistant layer on a surface of 40Cr steel, and also discloses a preparation method of the wear-resistant layer. The surfacing wear-resistant layer on the surface of the wear-resistant layer is an Fe-based coating, a Ni-based coating or a Co-based coating. By means of the coating, the hardness of the surface of the 40Cr steel is improved, and the wear resistance and corrosion resistance of the 40Cr steel are further improved. The preparation method comprises the following steps of 1, weighing raw material powder required for preparing the wear-resistantlayer; 2, preparing wear-resistant layer powder, namely preparing Fe-based coating powder, preparing Ni-based coating powder or preparing Co-based coating powder; and 3: surfacing wear-resistant layer powder on the surface of the 40Cr steel, specifically, the wear-resistant layer powder is Fe-based coating powder, Ni-based coating powder or Co-based coating powder.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant layers on steel surfaces, and in particular relates to a surfacing wear-resistant layer on a 40Cr steel surface, and also relates to a preparation method of the wear-resistant layer. Background technique [0002] With the development of science and technology in our country, the manufacturing industry has also made rapid progress. 40Cr steel is one of the most commonly used materials in my country's machinery manufacturing industry. 40Cr steel is a medium-carbon low-alloy high-strength quenched and tempered steel. Its tensile strength, yield strength, and hardenability are all better than 45 steel. After quenched and tempered, it has excellent comprehensive mechanical properties and good low-temperature impact. Toughness and low notch sensitivity, due to its excellent comprehensive properties, 40Cr steel is often used to produce automotive half shafts, gears, shafts, worms and other compone...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C38/02C22C38/44C22C19/05C22C19/07B22F9/04
CPCB22F9/04B22F2009/043C22C19/058C22C19/07C22C38/02C22C38/44C23C24/103
Inventor 张敏王刚慕二龙张立胜许桓瑞张云龙郭宇飞
Owner XIAN UNIV OF TECH
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