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Composite ceramic powder for laser cladding of high manganese steel material

A composite ceramic and laser cladding technology, applied in metal material coating process, coating and other directions, to achieve the effect of prolonging service life, good impact toughness, and improving wear resistance

Inactive Publication Date: 2019-03-08
北京奥邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the laser cladding powder of the present invention to perform laser cladding treatment on martensitic stainless steel knives and scissors can reduce processing costs, but it cannot be applied to the laser cladding transformation of the fixed cone and moving cone of the cone crusher in this application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composite ceramic powder, the mass percent of the powder selected: C: 0.3%, Cr: 12.5%, Co: 1.6%, Mo: 1.0%, V: 0.6%, Si: 0.9%, Ni: 1.8%, Mn: 0.6%, B:0.5%, also contains ceramic powder Al 2 o 3 : 3%, SiC: 2%, the balance being Fe, through a V-shaped mixer, mechanically mixed for 2 hours, to reach a uniformly mixed state.

[0019] Using the composite ceramic powder, use a semiconductor laser to clad the surface of the fixed cone or moving cone of the cone crusher, the laser power is 4KW, the laser beam adopts a rectangular spot with a width of 12mm×2.5mm, and the scanning speed is 580mm / min. The rate is 70g / min, forming a laser hardened layer with a cladding thickness of 3.5mm. There is no crack on the surface after testing. The hardness value is: HRC53. After the impact test at room temperature, the yield strength: 780MPa, tensile strength: 992MPa, elongation: 22 %, after the abrasive wear test, its wear resistance is 2.3 times that of high manganese steel.

Embodiment 2

[0021] The composite ceramic powder, the mass percent of the selected powder: C: 0.4%, Cr: 14%, Co: 1.8%, Mo: 1.1%, V: 0.8%, Si: 0.9%, Ni: 2%, Mn: 0.6%, B:0.7%, also contains ceramic powder: Al 2 o 3 : 3%, SiC: 3%, the balance is Fe, and through a V-shaped mixer, mechanically mixed for 2 hours to reach a uniformly mixed state.

[0022] Using the composite ceramic powder, use a semiconductor laser to clad the surface of the fixed cone or moving cone of the cone crusher, the laser power is 4KW, the laser beam adopts a rectangular spot with a width of 12mm×2.5mm, and the scanning speed is 580mm / min. The rate is 70g / min, and a laser hardened layer with a cladding thickness of 3.5mm is formed. There is no crack on the surface after testing, and the hardness value is HRC56. After normal temperature impact test, yield strength: 725MPa, tensile strength: 914MPa, elongation: 20%, after abrasive wear test, its wear resistance is 2.8 times that of high manganese steel.

Embodiment 3

[0024] The composite ceramic powder, the mass percent of the selected powder: C: 0.4%, Cr: 16%, Co: 2.3%, Mo: 1.5%, V: 1.0%, Si: 0.9%, Ni: 1.5%, Mn: 0.6%, B:0.9, also contains ceramic powder: Al 2 o 3 : 4%, SiC: 4%, the balance is Fe, and through a V-type mixer, mechanically mixed for 2 hours to achieve a uniform mixing state.

[0025] Using the composite ceramic powder, use a semiconductor laser to clad the surface of the fixed cone or moving cone of the cone crusher, the laser power is 4KW, the laser beam adopts a rectangular spot with a width of 12mm×2.5mm, and the scanning speed is 580mm / min. The rate is 70g / min, and a laser hardened layer with a cladding thickness of 3.5mm is formed. There is no crack on the surface after testing, and the hardness value is HRC58. After normal temperature impact test, yield strength: 662MPa, tensile strength: 843MPa, elongation: 19%, after abrasive wear test, its wear resistance is 3.4 times that of high manganese steel.

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Abstract

The invention belongs to the technical field of material laser cladding, and relates to composite ceramic powder for laser cladding of a high manganese steel material. The composite ceramic powder isprepared from the following components in percentage by mass: 0.3-5% of C, 8-16% of Cr, 0.5-2.5% of Co, 1-4% of Mo, 0.5-1.0% of V, 0.5-3.5% of Si, 0.5-1% of Mn, 1.5-8% of Ni, 0.5-4% of B and the balance of Fe, wherein 3-5% of oxide ceramics Al2O3 and 2-4% of carbide ceramics SiC are added as an abrasion-resistant ceramic phase. The composite ceramic powder is cladded on the surface of the manganese steel material through a laser cladding remanufacturing technology, the composite ceramic powder and a matrix are fused well, the cladding surface does not produce cracks, the hardness is up to HRC55 or above, and good impact toughness and abrasion resistance are achieved.

Description

technical field [0001] The invention belongs to the technical field of laser cladding materials, in particular to a composite ceramic powder used for laser cladding high manganese steel material. Background technique [0002] Cone crusher has the advantages of large crushing ratio, high output, low power consumption, uniform product size and suitable for crushing hard ore. It is widely used in the fields of mineral processing, metallurgy, cement, electric power and chemical industry. However, in the process of crushing ore, the fixed cone and moving cone of the cone crusher will be subjected to huge cyclic stress, compressive stress and tensile stress generated by the ore, which will easily cause wear and damage to the roller surface. In China, medium carbon alloy steel and high manganese steel are usually used to produce the fixed cone and moving cone of the cone crusher. The difference is very large, the shortest use is offline for one week, and the longest use is offline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/02C22C38/04C22C38/44C22C38/46C22C38/52C22C38/54
CPCC22C38/02C22C38/04C22C38/44C22C38/46C22C38/52C22C38/54C23C24/103
Inventor 王斌王存
Owner 北京奥邦新材料有限公司
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