Alloy powder for laser cladding and preparation method thereof

A technology of laser cladding and alloy powder, which is applied in the field of laser cladding, can solve the problems of poor weldability and low viscosity, and achieve the effect of good weldability and poor weldability

Active Publication Date: 2014-08-06
SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing alloy powders used for laser cladding have poor weldability and low viscosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the dissimilar metal powder is a smelting-inert gas atomization method, and the specific steps are as follows: the dissimilar metal powder is combined according to the following mass ratio: C0.01%, Si0.80%, Cr0.70%, Ni1.00%, Mo0 .50%, Nb0.08%, Al7.0%, Zr0.10%, V0.10%, and the rest is Fe. The mixed dissimilar metal powders were melted at 1300° C. under the protection of argon and kept for 18 hours to obtain a melt of the dissimilar metal powders. Atomize the melt of dissimilar metal powder, the atomization medium is argon, and the atomization pressure is 4.5MP. Grinding the atomized dissimilar metal powder to obtain dissimilar metal powder with a particle size of ≤100 μm.

[0027] Alloy powders for laser cladding were obtained by mixing dissimilar metal powders with high-viscosity liquid flux AMCO446 flux (American Solder & Flux Co., InC.). Among them, the mass percentage of dissimilar metal powder is 57%, and the content of high-viscosity liq...

Embodiment 2

[0030] The preparation method of the dissimilar metal powder is a smelting-inert gas atomization method, and the specific steps are as follows: the dissimilar metal powder is combined according to the following mass ratio: C0.05%, Si0.30%, Cr1.20%, Ni0.50%, Mo0 .90%, Nb0.60%, Al3.0%, Zr0.30%, V0.03%, and the rest is Fe. The mixed dissimilar metal powders were melted at 1370° C. under the protection of argon and held for 16 hours to obtain a melt of the dissimilar metal powders. Atomize the melt of dissimilar metal powder, the atomization medium is argon, and the atomization pressure is 4.5MP. Grinding the atomized dissimilar metal powder to obtain dissimilar metal powder with a particle size of ≤100 μm.

[0031] The alloy powder for laser cladding is obtained by mixing dissimilar metal powder and high-viscosity liquid flux AMCO446 flux. Wherein, the mass percent of the dissimilar metal powder is 60%, and the content of the high-viscosity liquid flux is 40%. The mixing tempe...

Embodiment 3

[0034] The preparation method of the dissimilar metal powder is a smelting-inert gas atomization method, and the specific steps are as follows: the dissimilar metal powder is combined according to the following mass ratio: C0.027%, Si0.70%, Cr0.75%, Ni0.84%, Mo0 .71%, Nb0.12%, Al5.9%, Zr0.14%, V0.09%, and the rest is Fe. The mixed dissimilar metal powders were melted at 1500° C. under the protection of argon and kept for 12 hours to obtain a melt of the dissimilar metal powders. Atomize the melt of dissimilar metal powder, the atomization medium is argon, and the atomization pressure is 4.5MP. Grinding the atomized dissimilar metal powder to obtain dissimilar metal powder with a particle size of ≤100 μm.

[0035] The alloy powder for laser cladding is obtained by mixing dissimilar metal powder and high-viscosity liquid flux AMCO446 flux. Among them, the mass percentage of dissimilar metal powder is 53%, and the content of high-viscosity liquid flux is 47%. The mixing temper...

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Abstract

The invention discloses alloy powder for laser cladding. The alloy powder comprises dissimilar metal powder and highly viscous liquid fluxing agents. The dissimilar metal powder comprises the following components, by mass percent, 0.01% to 0.05% of C, 0.3% to 0.8% of Si, 0.7% to 1.2% of Cr, 0.5% to 1% of Ni, 0.5% to 0.9% of Mo, 0.08% to 0.6% of Nb, 13% to 7% of A, 0.1% to 0.3% of Zr, 0.03% to 0.10% of V, and the balance Fe. The invention further discloses a preparation method of the alloy powder for laser cladding. The alloy powder for laser cladding is good in weldability and high in viscosity.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to an alloy powder for laser cladding and a preparation method thereof. Background technique [0002] Laser cladding technology refers to placing selected alloy coating materials on the surface of the coated substrate with different filler methods, melting it and a thin layer of the substrate surface at the same time through laser irradiation, and forming a very low dilution after rapid solidification And form a metallurgically combined surface coating with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the base material surface. During this process, the added alloy powder is melted on the interface of the substrate and mixed with the partially melted substrate material to form a mixed paste layer, so the adhesion between the substrate and the alloy coating materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08C22C38/50
Inventor 杨庆东董春春杨帆马文平杜学芸宋其伟
Owner SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD
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