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Laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite materials and preparation method thereof

An iron-based composite material, vc-cr7c3 technology, applied in the coating process and coating of metal materials, can solve problems such as cracks, uneven coating, singleness, etc., and achieve improved bonding strength, improved surface properties, and good metallurgy combined effect

Inactive Publication Date: 2018-05-18
上海万泽精密铸造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the single surface cladding material of existing parts, problems such as cracks and uneven coating often appear on the surface of parts during the process of repairing parts using laser cladding technology.

Method used

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  • Laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite materials and preparation method thereof
  • Laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite materials and preparation method thereof
  • Laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite materials and preparation method thereof

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preparation example Construction

[0038] Such as figure 1 As shown, the preparation method of the laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite material according to the embodiment of the present invention includes:

[0039] S1, select a metal material as a substrate, and polish and clean the surface of the substrate.

[0040] Specifically, the metal material can be metal steel, such as Q235 steel. The surface of the substrate is polished with sandpaper to remove oxides and oil stains on the surface, and cleaned with acetone, so that the metal material is fully in contact with the primer cladding material.

[0041] S2, setting a layer of primer cladding layer on the surface of the ground and cleaned substrate.

[0042] Preferably, the bottom cladding layer material is Ni60 self-fluxing alloy powder, Ni60 self-fluxing alloy powder has good toughness, corrosion resistance, wear resistance and oxidation resistance, and helps to improve the bottom cladding layer and Wettability between...

Embodiment

[0053] The base material selected in this embodiment is Q235 steel, and the cladding powder is V powder, Cr powder and C powder, according to the chemical reaction equations (1) and (2):

[0054] V+C→VC (1)

[0055] 7Cr+3C→Cr 7 C 3 (2)

[0056] Mix Cr powder and C powder in a mass ratio of 91:9 (the atomic weight of Cr is 52, C is 12, that is, the molar ratio is 7:3) and mix them into cladding powder a, and mix V powder and C powder in a mass ratio of 17 :4 (the atomic weight of V is 51, and the atomic weight of C is 12, that is, the molar ratio is 1:1) and mix it into cladding powder b, and then mix cladding powder a and cladding powder b according to the mass The ratio of 1:1 is mixed to form cladding powder c, and it is ground evenly in a ball mill. The coating thickness is about 1mm.

[0057] The laser equipment used in this embodiment is SLC-20×30D CNC laser multifunctional processing machine, the main technical parameters: the processing area is 3000mm on the X axi...

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Abstract

The invention provides laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite materials and a preparation method thereof. The preparation method comprises the following steps that S1, metal materials are selected as a base body, and the surface of the base body is ground and cleaned; S2, a priming cladding layer is arranged on the surface of the base body; S3, Cr powder and C powder are mixed according to the mass ratio of 35:4-11:10 to form a cladding powder a, V powder and the C powder are mixed according to the mass ratio of 3:1-11:2 to form a cladding powder b, the cladding powder a and the cladding powder b are mixed according to the mass ratio of 1:1 to form a cladding powder c, and the cladding powder c is coated on the surface of the priming cladding layer of thebase body through a binding agent so as to form a preset coating; and S4, laser cladding is carried out on the preset coating by taking a laser beam as a heat source to form the VC-Cr7C3 ceramic cladding layer, and VC-Cr7C3 ceramic reinforced iron-based composite materials are obtained.

Description

technical field [0001] The invention relates to the technical field of material chemistry, in particular to a laser reaction cladding VC-Cr7C3 ceramic reinforced iron-based composite material and a preparation method thereof. Background technique [0002] As early as the end of the 1980s, the U.S. Department of Commerce listed surface engineering technology as one of the seven key technologies affecting human life in the 21st century. and advanced manufacturing technology. In recent years, my country has also attached great importance to laser surface engineering technology. The emergence of this technology has broadened the field of surface modification technology, especially in the preparation of wear-resistant cladding layers. It has shown great potential and has become a research hotspot in the field of surface engineering. . At present, laser surface modification technology is mainly used in components and accessories in machinery, metallurgy, automobile, agricultural ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 谢金群候树聪靳浩天陆敏李文戈
Owner 上海万泽精密铸造有限公司