A low heat input laser cladding method and system for refractory metal cladding

CN122425214APending Publication Date: 2026-07-21SHENYANG AIRCRAFT CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG AIRCRAFT CORP
Filing Date
2026-06-10
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies suffer from thermal mismatch issues during laser cladding of refractory metal coatings on titanium alloy surfaces, resulting in poor coating quality, low efficiency, complex equipment modifications, and insufficient adaptability, making it difficult to achieve high-quality, low-heat-input laser cladding.

Method used

By employing a method of substrate surface patterning pretreatment, interface intermediate layer control, and closed-loop control of forming state, a high-quality refractory metal coating is formed by creating a patterned texture on the substrate surface, introducing an intermediate layer, and performing low-heat-input laser cladding, combined with forced cooling and real-time monitoring.

Benefits of technology

It has achieved efficient and automated laser cladding of refractory metals, which improves laser energy utilization, reduces heat input, increases forming accuracy and material utilization, enhances interfacial bonding strength, and reduces environmental pollution.

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Abstract

The present application relates to a kind of refractory metal coating low heat input laser cladding method and system.Taking the surface pattern pre-processing of substrate, promote the multiple interaction reflection of incident laser beam in layer, improve laser energy utilization rate;Screening, construction multilayer structure interface interlayer, alleviate the mismatch of low melting point titanium alloy to refractory metal, thermal expansion and thermal conductivity, while with the self-fusion properties of interlayer strengthens interlayer bonding;Introduce forced cooling-real-time monitoring-closed loop control constraint wide surface forming process substrate temperature and stress change, realize high forming precision and coating stable composition and organization structure.Rely on the technical scheme of the present application develops refractory coating-substrate laminated structure, with high degree of automation, less human intervention, wide adaptability, high reliability, high material utilization and environmental friendliness etc.Advantages.
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