Multitrack even overlapping laser cladding repair method for unequal width damage parts

A technology of laser cladding and repairing method, applied in metal material coating process, coating and other directions, can solve the problem of uneven distribution of structure and properties, and achieve the effect of improving uneven distribution of structure and properties and avoiding uneven lap joint.

Active Publication Date: 2015-10-28
XINGHUA SANCHENG PRECISION FORGING
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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a method for repairing damaged parts with unequal widths by multi-channel uniform overlapping laser cladding. For damaged metal parts whose width of the damaged groove changes gradually, a profiler is used to scan the width of the damaged groove first. Change curve, according to the variation range of the groove width and laser spot diameter, select a reasonable number of laser cladding melt channels and spot overlap rate, keep other paramete

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  • Multitrack even overlapping laser cladding repair method for unequal width damage parts
  • Multitrack even overlapping laser cladding repair method for unequal width damage parts
  • Multitrack even overlapping laser cladding repair method for unequal width damage parts

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[0024] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, but the present invention should not be limited to the examples.

[0025] The cladding powder used in this example is Fe304 stainless steel, the base material of the sample is 316L stainless steel, its geometric size is 120 mm × 60 mm × 15 mm, and a line is cut in the middle part with a width of 20 mm at one end and a width of 20 mm at the other end. An isosceles trapezoidal groove with a width of 10 mm and a depth of 3 mm.

[0026] An example of using the above-mentioned processing method to repair the sample, the steps are:

[0027] (1) Use a profiler to scan the surface profile of the damaged groove to obtain the change curve of the width L of the damaged groove, and obtain an isosceles trapezoidal change curve with an upper base width of 10 mm and a lower base width of 20 mm.

[0028] (2) According to the variation of th...

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Abstract

The invention relates to a multitrack even overlapping laser cladding repair method for unequal width damage parts. For metal damage parts with the damage groove widths being changed gradually, a contourgraph is used for scanning a changing curve of the damage groove widths first, reasonable laser cladding track numbers and laser spot overlapping rates are selected according to the change range of the groove widths and laser spot diameters, and other parameters are kept unchanged; by controlling the sizes of laser spots to be changed along with the change of the damage groove widths, the numbers of laser cladding fusing tracks at the positions of different widths of grooves are the same, and the overlapping rates of laser cladding at the positions of different widths of the grooves are the same. By the adoption of the method, multitrack even overlapping laser cladding repair can be conducted on the unequal width damage parts, and the defect that tissue and property distribution of the unequal width damage parts is uneven due to different laser cladding fusing track numbers and uneven overlapping is effectively overcome.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a method for repairing damaged parts with unequal widths by multi-track uniform overlapping laser cladding, and is especially suitable for repairing metal parts with uneven width of damaged grooves. Background technique [0002] Laser cladding is a high-quality, high-efficiency, energy-saving, and environmentally-friendly surface modification technology. By adding cladding materials to the surface of the substrate and using a high-energy-density laser beam to fuse it together with the thin layer on the surface of the substrate, Forming a material-added cladding layer combined with metallurgy on the surface of the base layer, which can significantly improve the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the base layer surface, so as to achieve the purpose of surface modification or repair. It meets the requirements for ...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 罗开玉景祥鲁金忠
Owner XINGHUA SANCHENG PRECISION FORGING
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