The protective atmosphere is very important during laser cladding process.
激光熔覆过程中保护气氛的作用重要。
At the same time, the cracking trend is affected by the laser cladding process parameters, the alloy powders content, and the shape and size of the reinforced phases.
同时开裂倾向还受激光工艺参数、涂层合金粉的配比以及强化相的形状、大小等因素的影响。
Results showed that the two coaxial powder-feeding nozzles designed satisfied requirements of nozzle in laser cladding process and could be used for laser cladding 3-D manufacturing.
实验的结果说明，设计的两种同轴送粉喷嘴均能够较好的满足激光熔覆对送粉喷嘴的要求，适应激光熔覆三维立体制造技术。
According to the character of laser cladding, a finite element model for analyzing the temperature field was built and the laser cladding process with powder feeding was analyzed with this model.
根据激光熔覆的特点，建立了激光熔覆温度场分析模型，对送粉激光熔覆过程温度场进行了有限元分析。
The influence of laser power, scanning speed, powder feed rate, spot diameter and preheating on the temperature of molten pool were revealed in the process of single-pass cladding.
在单道熔覆中通过跟踪测量研究了激光功率、扫描速度、送粉速率、光斑直径和基体预热温度对熔池温度的影响规律。
The development of laser cladding is introduced, its key technology and intelligent control of the process is reviewed. The applications in industry at present and in the future are proposed.
介绍了激光表面熔覆的研究进展、关键技术及过程的智能控制，展望了其工业应用前景。
The technical process of the coaxial laser cladding is introduced and the reaction mechanism between metallic powder particle and laser is analyzed.
介绍了同轴送粉激光熔覆的工艺过程以及激光与金属粉末的作用机理，分析了影响熔覆件质量的主要因素。
EDS spectrum analysis found that the process of laser cladding elements occurred in the proliferation of cladding layer and the substrate to achieve a good metallurgical bonding.
EDS能谱分析发现在激光熔覆的过程中发生了元素扩散，熔覆层与基体实现了良好的冶金结合。
According to the physics process of powder feed laser cladding, the basic problems are brought up that must be considered in the numerical model for that process.
根据送粉式激光熔覆的物理过程，提出了送粉式激光熔覆数值模型必须考虑的基本问题。
The coupled numerical simulation on fluid flow, heat transfer, and mass transfer in the process of laser cladding is undertaken on the basis of the continuum model.
基于统一模型对激光熔覆过程中流动、传热和传质进行了偶合数值模拟。
The anti-cavitation laser cladding technique for the surface of stainless steel is reviewed. The equipments, deposition process and laser cladding powder are introduced.
综述了国内外不锈钢抗空蚀激光表面熔覆技术的研究现状，介绍了该技术的特点，设备和抗空蚀熔覆粉末体系。
Laser cladding is a complicated process accompanied with physical and chemical reaction, so parameters are important to the quality.
激光熔覆是一个复杂的物理、化学冶金过程，熔覆过程中的参数对熔覆件的质量有很大的影响。
The paper deals with the reasons of producing defects and its control methods in laser cladding and laser surface alloying process.
论述了激光熔覆与合金化层缺陷的产生原因及其控制方法。
There is much less cracks in laser cladding-remelting layer after remelting process.
经重熔处理后，熔覆层表面的裂纹显著减少；
There is much less cracks in laser cladding-remelting layer after remelting process.
经重熔处理后，熔覆层表面的裂纹显著减少；
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