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Laser cladding method of nickel-based alloy laser cladding powder

A laser cladding, nickel-based alloy technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of cumbersome process, peeling, etc., to reduce working steps, eliminate thermal stress, avoid cracks and deformation of the substrate Effect

Inactive Publication Date: 2021-08-13
宁夏恒泰化工设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a laser cladding method for nickel-based alloy laser cladding powder in order to solve the problems of cumbersome procedures and "skinning"

Method used

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Embodiment 1

[0021] A laser cladding method for nickel-based alloy laser cladding powder, the specific steps are as follows:

[0022] Step 1: Grind the surface of the workpiece to be laser clad with sandpaper or manual grinding wheel to remove the oxide film and oil stain, and clean the polished workpiece with absolute ethanol and acetone;

[0023] Step 2: After completing step 1, use a heating device to preheat the cladding position of the workpiece. The preheating temperature is T1, 200°C≤T1≤300°C, and the preheating time is 1-2 hours;

[0024] Step 3: Put the cladding powder into the drying device for drying, remove trace moisture, and fill the inside of the drying device with inert gas after drying;

[0025] Step 4: Add the cladding powder to the powder feeding system and continuously feed the powder to the cladding part of the workpiece through the laser coaxial powder feeding system, and scan the cladding to attach the powder to the surface of the workpiece. During the cladding proce...

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Abstract

The invention discloses a laser cladding method of nickel-based alloy laser cladding powder, and relates to the field of laser cladding. The method comprises the following specific steps: step 1, the surface of a workpiece to be subjected to laser cladding is polished by abrasive paper or manually polished by a grinding wheel to remove an oxidation film and oil stain, the polished workpiece is cleaned by absolute ethyl alcohol and acetone, and the cleaned workpiece is dried; step 2, after the step 1 is completed, a heating device is adopted for preheating the cladding position of the workpiece, the preheating temperature T1 is larger than or equal to 200 DEG C and smaller than or equal to 300 DEG C, and the preheating time is 1-2 hours. The surface of the to-be-cladded workpiece is cleaned before cladding, so that the surface is ensured to meet the cladding requirements, the cladding effect of the cladded working layer is improved, the surface of the workpiece is heated again after cladding is completed, a heat preservation layer covers the surface of the workpiece for slow cooling, and therefore, heat stress in the part can be eliminated, heat stress generated by rapid cooling is reduced, the service life of the part is prolonged, and the defects of cracks of a cladding layer, deformation of a matrix and the like are avoided.

Description

technical field [0001] The invention relates to the field of laser cladding, in particular to a laser cladding method for nickel-based alloy laser cladding powder. Background technique [0002] With the rapid development of laser technology, it is playing more and more important roles in the field of material processing. As a kind of laser processing technology, laser cladding refers to placing materials on the surface of the cladding substrate in different ways. The selected coating material is irradiated by laser to melt with a thin layer on the surface of the substrate at the same time, and after rapid solidification, it forms a surface coating with extremely low dilution and metallurgical combination with the substrate, which significantly improves the wear resistance and durability of the substrate surface. Corrosion, heat resistance, oxidation resistance and electrical properties of the process, so as to achieve the purpose of surface modification or repair, not only m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F1/00C22C19/05
CPCB22F1/0007C23C24/103C22C19/058
Inventor 王孙德包剑雄包平张建军
Owner 宁夏恒泰化工设备有限公司
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