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Laser cladding process and laser cladding repair processing system based on thermal aging treatment

A technology of laser cladding and processing system, applied in the direction of metal material coating technology and coating, can solve the problems of limiting the practical application of laser cladding technology, uneven heating of the substrate, cooling shrinkage cracking, etc., to suppress cladding cracks and porosity defects, eliminate residual stress, and reduce the effect of residual stress

Pending Publication Date: 2021-05-07
NANJING ZHONGKE RAYCHAM TECH
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  • Claims
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Problems solved by technology

However, the cladding layer has residual tensile stress due to uneven cooling; at the same time, due to the uneven heating of the substrate during the cladding process, the temperature gradient is large, forming a temperature difference, causing the cladding area to cool and shrink and crack, thus forming cladding cracks and pores. defects, induce a large amount of residual tensile stress
Currently, these deficiencies limit the practical application of laser cladding technology

Method used

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  • Laser cladding process and laser cladding repair processing system based on thermal aging treatment
  • Laser cladding process and laser cladding repair processing system based on thermal aging treatment
  • Laser cladding process and laser cladding repair processing system based on thermal aging treatment

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Embodiment Construction

[0030] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0031] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0032] combine figure 1 As shown, the laser cladding repair processing system based on thermal aging treatment according to...

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Abstract

The invention provides a laser cladding process based on thermal aging treatment. The laser cladding process comprises the following steps of (1) pretreating a cladding part and a flat sample; (2) clamping the flat sample, and arranging a heating device below a chuck clamp; (3) arranging a temperature sensor near a to-be-cladded area of the flat sample for detecting the cladding temperature; (4) carrying out a single-pass laser cladding test on the flat sample, and recording the temperature range achieved by the cladding surface under corresponding cladding process parameters; (5) clamping the cladding part on the chuck clamp, enabling a temperature control system to control the heating temperature of the heating device according to the recorded temperature range, performing dynamic temperature control on the cladding part, and maintaining the overall temperature of the cladding part within the temperature interval achieved by laser cladding; (6) setting the corresponding laser cladding process parameters, and carrying out laser cladding on the surface of the cladding part; and (7) after the cladding is finished, controlling to stop heating by the temperature control system, and slowly cooling to room temperature. According to the process, the generation of cladding cracks can be reduced, and the cladding quality and effect can be improved.

Description

technical field [0001] The invention relates to a laser cladding process and device based on thermal aging treatment, which belongs to the application field of material surface engineering and laser technology. Background technique [0002] Laser cladding technology (Laser Cladding Technology), also known as laser cladding technology, has the characteristics of small heat-affected zone, low dilution rate, fast cooling and metallurgical bonding between cladding materials and substrates. It is an emerging rapid prototyping technology, so It has important application value in industries such as aerospace, automobile manufacturing, mold repair, medical treatment and chemical industry. However, the cladding layer has residual tensile stress due to uneven cooling; at the same time, due to the uneven heating of the substrate during the cladding process, the temperature gradient is large, forming a temperature difference, causing the cladding area to cool and shrink and crack, thus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C21D1/00
CPCC23C24/103C21D1/00
Inventor 邢月华唱丽丽蒋士春王文博
Owner NANJING ZHONGKE RAYCHAM TECH
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