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Ni-Cr-Al nanometer welding layer and preparation method

A ni-cr-al, nano welding layer technology, applied in the field of submerged arc welding, can solve the problems of short service life of parts, high porosity, poor surface bonding strength of parts, etc., to improve performance and prolong service performance , the effect of avoiding the waste of resources

Active Publication Date: 2015-08-12
WUHU DINGHENG MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, ordinary welding wire is mostly used for welding. Due to the unreasonable combination of ingredients and poor performance of materials, the surface bonding strength of welded parts is poor, the porosity is high, and the wear resistance and corrosion resistance are poor. Ultimately resulting in a shorter service life of components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of Ni-Cr-Al nano welding layer, comprises the component of following mass percentage:

[0013] Ni accounts for 50.5%, Cr accounts for 40%, Al accounts for 8%, and SiC accounts for 1.5%.

[0014] A method for preparing a Ni-Cr-Al nano-welding layer, the steps of the method are as follows: the Ni, Cr, and Al are all made of nano-spheres by gas atomization, and then uniformly mixed with additives after grinding to make NiCrAl Nano welding wire is finally welded to form a NiCrAl nano welding layer on the surface of the parts.

Embodiment 2

[0016] A kind of Ni-Cr-Al nano welding layer, comprises the component of following mass percentage:

[0017] Ni accounts for 58%, Cr accounts for 34%, Al accounts for 7%, and SiC accounts for 1%.

[0018] A method for preparing a Ni-Cr-Al nano-welding layer, the steps of the method are as follows: the Ni, Cr, and Al are all made of nano-spheres by gas atomization, and then uniformly mixed with additives after grinding to make NiCrAl Nano welding wire is finally welded to form a NiCrAl nano welding layer on the surface of the parts.

Embodiment 3

[0020] A kind of Ni-Cr-Al nano welding layer, comprises the component of following mass percentage:

[0021] Ni accounts for 52%, Cr accounts for 37%, Al accounts for 9%, and SiC accounts for 2%.

[0022] A method for preparing a Ni-Cr-Al nano-welding layer, the steps of the method are as follows: the Ni, Cr, and Al are all made of nano-spheres by gas atomization, and then uniformly mixed with additives after grinding to make NiCrAl Nano welding wire is finally welded to form a NiCrAl nano welding layer on the surface of the parts.

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Abstract

The invention relates to a Ni-Cr-Al nanometer welding layer and a preparation method; the Ni-Cr-Al nanometer welding layer comprises the following components in mass percent: 44 to 59% of Ni, 34 to 41% of Cr, 7 to 9% of Al and 1 to 2% of additive; the additive is SiC; the method comprises the following steps: preparing Ni, Cr and Al all into a nanosphere in a gas atomization method, then, uniformly mixing the nanosphere with ground additive to prepare into a NiCrAl nanometer welding wire; at last, welding the NiCrAl nanometer welding wire on the surface of a part to form the NiCrAl nanometer welding layer. According to the Ni-Cr-Al nanometer welding layer and the preparation method, by adopting reasonable materials and proportion, the shortages of poor bonding strength of the welding layer, high porosity, relatively poor wear resistance and corrosion resistance in the prior art are solved; the remanufacturing of the to-be-repaired part is realized and the waste of resources is prevented; meanwhile, the property of the repaired part is improved and the usability of the part is prolonged.

Description

technical field [0001] The invention relates to the technical field of submerged arc welding, in particular to a Ni-Cr-Al nano welding layer and a preparation method thereof. Background technique [0002] Welding is one of the important means of connecting parts and parts, and it is also one of the main measures of material addition and repair. After welding the special welding wire, a welding layer can be formed on the surface of the parts to be repaired, and then Polishing is carried out to make the surface of the repaired parts meet the needs of actual use. Nowadays, ordinary welding wire is mostly used for welding. Due to the unreasonable combination of ingredients and poor performance of materials, the surface bonding strength of welded parts is poor, the porosity is high, and the wear resistance and corrosion resistance are poor. The end result is a shorter service life of the components. Contents of the invention [0003] The technical problem to be solved by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30C22C19/05B23K35/40B23K9/18
CPCB23K9/18B23K35/304B23K35/40C22C19/05
Inventor 程敬卿
Owner WUHU DINGHENG MATERIAL TECH
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