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A kind of laser additive manufacturing sinking roller composite shaft sleeve and its preparation method

A composite shaft sleeve, laser additive technology, applied in additive processing, metal material coating process, coating and other directions, to achieve the effect of simple operation, dense microstructure and excellent mechanical properties

Active Publication Date: 2021-08-24
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, none of the above-mentioned inventions can solve the problem that the sunken roller bushing should take into account both anti-wear and corrosion resistance, and the bushing body should have good high-temperature strength and toughness, so as to ensure the safe use of the bushing.

Method used

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  • A kind of laser additive manufacturing sinking roller composite shaft sleeve and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A composite bushing for sinking rollers manufactured by laser additive manufacturing in this embodiment, the bushing includes a sinking roller bushing body 1 and a wear-resistant and corrosion-resistant surface layer 2, and the wear-resistant and corrosion-resistant surface layer 2 is covered on the On the sinking roller bushing body 1.

[0040] Wherein, the chemical composition and mass fraction of the material of the sunken roller sleeve body 1 include 0.30%C, 22.83%Cr, 8.06%Ni, 0.06%Ce, 0.02%N, 5.79%Mo, 2.64%Al, 12.53% Nb, 3.21% Si, 0.41% Mn, 0.022% P, 0.019% S, the balance being Fe and other unavoidable impurities. The chemical composition and mass fraction of the material of the wear and corrosion resistant surface layer 2 include 18.03% B, 28.60% Cr, 16.45% Co, 10.66% W, 0.75% Y, 2.30% C and 23.21% Ni.

[0041] A method for preparing a composite shaft sleeve of a sinking roller manufactured by laser additive manufacturing in this embodiment includes the following...

Embodiment 2

[0046] A composite bushing for sinking rollers manufactured by laser additive manufacturing in this embodiment, the bushing includes a sinking roller bushing body 1 and a wear-resistant and corrosion-resistant surface layer 2, and the wear-resistant and corrosion-resistant surface layer 2 is covered on the On the sinking roller bushing body 1.

[0047] Wherein, the chemical composition and mass fraction of the material of the sunken roller sleeve body 1 include 0.43%C, 22.15%Cr, 8.51%Ni, 0.03%Ce, 0.05%N, 5.40%Mo, 2.88%Al, 12.18% Nb, 3.46% Si, 0.27% Mn, 0.021% P, 0.015% S, the balance being Fe and other unavoidable impurities. The chemical composition and mass fraction of the material of the wear-resistant and corrosion-resistant surface layer 2 include 18.77% B, 28.17% Cr, 16.51% Co, 9.75% W, 0.89% Y, 2.17% C and 23.74% Ni.

[0048] A method for preparing a composite shaft sleeve of a sinking roller manufactured by laser additive manufacturing in this embodiment includes the ...

Embodiment 3

[0053] A composite bushing for sinking rollers manufactured by laser additive manufacturing in this embodiment, the bushing includes a sinking roller bushing body 1 and a wear-resistant and corrosion-resistant surface layer 2, and the wear-resistant and corrosion-resistant surface layer 2 is covered on the On the sinking roller bushing body 1.

[0054] Wherein, the chemical composition and mass fraction of the material of the sunken roller bushing body 1 include 0.38%C, 22.60%Cr, 8.35%Ni, 0.05%Ce, 0.03%N, 5.61%Mo, 2.76%Al, 12.30% Nb, 3.29% Si, 0.34% Mn, 0.020% P, 0.017% S, the balance being Fe and other unavoidable impurities. The chemical composition and mass fraction of the material of the wear and corrosion resistant surface layer 2 include 18.08% B, 28.34% Cr, 16.92% Co, 10.12% W, 0.80% Y, 2.23% C and 23.51% Ni.

[0055] A method for preparing a composite shaft sleeve of a sinking roller manufactured by laser additive manufacturing in this embodiment includes the followin...

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Abstract

The invention relates to a laser additive manufacturing sinking roller composite bushing and a preparation method thereof. The bushing includes a sinking roller bushing body and a wear-resistant and corrosion-resistant surface layer, and the wear-resistant and corrosion-resistant surface layer covers the The sunken roller sleeve is on the body. The laser additive manufacturing sunken roller composite shaft sleeve body prepared by the present invention has good high temperature strength and toughness, the tensile strength at 500 ° C is greater than 850 MPa, and the impact toughness is α KU Greater than 65J / cm 2 The surface layer hardness of the sinking roller composite bushing prepared by the method of the present invention is high, and the hardness is greater than 1250HV; the surface layer of the sinking roller composite bushing prepared by the present invention has excellent resistance to corrosion and wear of molten zinc, and under the corrosion environment of molten zinc at 480°C, The service life of the sinking roller composite bushing of the invention exceeds 45 days, which is greatly extended compared with the 316L stainless steel sinking roller bushing.

Description

technical field [0001] The invention belongs to the technical field of sinking rollers, and in particular relates to a composite shaft sleeve of a sinking roller manufactured by laser additive manufacturing and a preparation method thereof. Background technique [0002] At present, domestic large-scale iron and steel enterprises have imported more than 80 continuous galvanizing lines for wide-band steel from abroad. These production lines have the characteristics of advanced equipment, high output, and high-grade products. In the continuous hot-dip galvanizing production line, the sinking roll device is an important equipment. The sinking roll works in the zinc transition solution at about 460°C. Whether the sinking roll can run stably for a long time has an important impact on the quality and qualified product rate of galvanized products. In order to ensure the safe use of the sinking roller, the two ends of the sinking roller are assembled with bushings, and the sinking ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/48C22C38/44C22C38/34C22C38/06C22C38/04C22C33/04C22C30/00C23C24/10C21D1/30B33Y10/00B33Y80/00
CPCB33Y10/00B33Y80/00C21D1/30C22C27/06C22C30/00C22C33/04C22C38/001C22C38/002C22C38/005C22C38/04C22C38/06C22C38/34C22C38/44C22C38/48C23C24/103
Inventor 林英华林振衡陈庆堂张葵符寒光雷永平唐群华
Owner NANHUA UNIV