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首页> 外文期刊>Journal of Materials Engineering and Performance >Characteristics of Single-Track and Multi-track Depositions of Stellite by Micro-plasma Transferred Arc Powder Deposition Process
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Characteristics of Single-Track and Multi-track Depositions of Stellite by Micro-plasma Transferred Arc Powder Deposition Process

机译：微等离子体转移电弧粉末沉积工艺单轨道和多轨沉积的单轨和多轨道沉积特征

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摘要

This paper describes the characteristics study of single-track and multi-track deposition of Stellite 6 on AISI 4130 steel substrate by indigenously developed micro-plasma transferred arc powder deposition (mu-PTAPD) process. Deposition height and width, dilution and microstructure have been used to characterize the single-track depositions by studying effects of micro-plasma power, travel speed of worktable and powder mass flow rate on energy consumption per unit traverse length and power consumption per unit powder mass flow rate. Micro-plasma power was found to be the most influential parameter that affects energy and deposition material consumption. Consequently, its influence on micro-hardness and abrasion resistance of multi-track deposition was studied. Results showed that increase in micro-plasma power decreases micro-hardness and scratch hardness number and increases mean value of friction coefficient. Comparison of microstructure and chemical composition of single-track and multi-track depositions revealed that single-track has finer dendritic microstructure than the multi-track deposition. The black colored matrix and white colored dendrites present in the multi-track deposition have higher wt.% of cobalt and less wt.% of chromium than the single-track deposition. Comparison of mu-PTAPD process capabilities with the existing processes for Stellite deposition establishes that it is an energy-efficient, cost-effective and good quality deposition yielding process.
机译：本文介绍了通过本发明开发的微等离子体转移电弧粉末沉积（MU-PTAPD）工艺对AISI 4130钢基材单轨道6对AISI 4130钢基材的单轨和多轨道沉积的特征研究。沉积高度和宽度，稀释和微观结构已经用于通过研究微等离子体动力，工作台和粉末质量流量的效果，每单位粉末质量每单位横向长度和功耗的电力消耗来表征单轨沉积。流速。发现微等离子体功率是影响能量和沉积材料消耗的最有影响力的参数。因此，研究了对多轨沉积的微硬度和耐磨性的影响。结果表明，微等离子体功率的增加降低了微观硬度和划痕硬度数，增加了摩擦系数的平均值。单轨和多轨沉积的微观结构和化学成分的比较显示，单轨具有比多轨沉积更细的树突微观结构。存在于多轨沉积中的黑色基质和白色饰面树枝状有更高的重量％。钴的百分比和较少的Wt。铬的％比单轨沉积。 MU-PTAPD处理能力与现有流动沉积工艺的比较建立了它是一种节能，经济效益和良好的质量沉积屈服过程。

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