The analysis results also show that enhancing preheating temperature is an effective way to avoid cladding layer cracking.
提高基体预热温度可有效避免熔覆层开裂。
The results show that the cladding layer has compact and flawless microstructure and has been metallurgically integrated with pure copper substrate.
结果表明：所制得熔覆层组织致密、无裂纹，与基体形成了良好的冶金结合。
The B4C ceramic particle not melted in cladding layer.
熔覆层中出现未熔的B4C陶瓷颗粒。
Compared with the substrate, hardness of the cladding layer improves significantly.
与被强化基体相比，熔覆层的硬度得到显著提高。
The preparation of ternary boride hard alloy cladding layer on steel substrate is studied.
研究采用铸渗法制备三元硼化物硬质合金覆层钢基材料。
Some suggestions of resolving the problem of cracking in laser cladding layer were propounded.
对解决熔覆层开裂问题提出了一些建议。
It is shown that there are different solidification parameters for different position in cladding layer.
结果表明：熔覆层不同位置的凝固特征参数不同。
The cracks in the laser cladding layer are the main obstacle of the laser cladding technology application.
熔覆层中的裂纹是激光熔覆技术应用的主要障碍。
The influences of the process parameters on microstructure and properties of the cladding layer were discussed.
探讨了工艺参数对熔覆层组织、性能的影响。
Along the cladding direction, plastic tension strain appears which is the main cause of cladding layer cracking.
熔覆层材料沿熔覆方向发生的塑性拉伸变形，是造成熔覆层开裂的主要原因。
The Al-free grating surface permits the re-growth of a high-quality cladding layer that yields excellent device performance.
由于采用无铝光栅，保证了二次外延质量，从而得到较好的器件性能。
The effects of cavitation erosion resistance, abra - sion resistance and corrosion resistance of the cladding layer are reviewed.
并对激光熔覆层结构及性能作了较详细的介绍，阐述了熔覆层的抗空蚀性、耐磨蚀性和耐腐蚀性等。
The post treatment can improve deformation and surface stress state, refine microstructure and increase hardness of cladding layer.
后热处理可改善变形和表面应力状态、细化组织、提高硬度。
The features and microstructure of the cladding layer and interface layer between cladding layer and copper substrate were analyzed.
对熔覆层和熔覆层与基体结合区的形貌和微观组织进行了研究。
The grain refinement and formation of intermetallic play an important role for improving the performance in the laser cladding layer.
激光熔覆层中的晶粒细化和金属间化合物的形成对性能的提高起到重要作用。
This paper primarily discusses the feature of residual thermal stress on the interface between ceramic particle and matrix of laser cladding layer.
研究了激光涂覆时因陶瓷颗粒与金属之间物理性能差异而在其界面处形成的残余应力特征。
In this article the laser cladding technology is outlined, and the effect of laser cladding parameters on the quality of cladding layer is introduced.
本文概述了激光熔覆技术，介绍了激光熔覆工艺参数对熔覆层质量的影响。
It is found that cracks of cladding layer is one of the main defects in the laser cladding of thick layer on the sealing surface of high parameter valve.
在高参数阀门零件密封面上进行厚覆层激光熔覆时，发现覆层裂纹是主要的质量缺陷。
The technology of acquiring precise modified layer on construction material surface by light beam cladding was investigated and its effect on cladding layer quality was revealed.
研究了采用聚焦光束熔覆方法在结构材料表面获得精密改性层的工艺及其对熔覆层质量的影响。
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。
The results are that the structure and properties of cladding layer are determined by the laser surface cladding processing parameter and quality of the cladding before laser heating.
认为在低碳钢表面涂覆硬质合金的涂层组织性能取决于激光涂覆工艺与预涂层的质量。
On the non preheating cladding layer, the eutectic austenite dendrite growth is along the opposite direction of temperature gradient beginning from interface to face of cladding layer.
在未预热的熔覆层内，先共晶的奥氏体枝晶的生长，从界面开始逆温度梯度方向定向生长．直到熔覆层的表面。
That method was used for calculating the residual stress of laser cladding layer of the hermetic surface of valves. There is good agreement between our results and the others quoted from literature.
对气门密封面激光熔覆钴基合金层的计算结果显示，显微压入硬度法得到的残余应力分布数据与其它方法测得的激光熔覆层残余应力分布数据具有相同的变化趋势。
The utility model relates to a double cladding layer and double envelope layer spherical fertilizer, which relates to a novel slow release fertilizer and belongs to the technical field of fertilizers.
双包裹层、双包膜层球形肥料涉及一种新型缓效肥料，属于肥料技术领域。
The utility model relates to a double cladding layer and double envelope layer spherical fertilizer, which relates to a novel slow release fertilizer and belongs to the technical field of fertilizers.
双包裹层、双包膜层球形肥料涉及一种新型缓效肥料，属于肥料技术领域。
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