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Understanding the thermal process during laser assisted ultra-high frequency induction deposition with wire feeding

机译：了解激光辅助超高频感应沉积的热处理与送丝

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摘要

This study proposes a novel metal deposition method referred to as laser assisted ultra-high frequency induction (UHF) deposition. In this method, the UHF induction heat is used as the main heat source to melt the deposited metal, and the laser heat acts as an auxiliary heat source that provides a high-temperature substrate surface for efficient fusion between the deposited metal and substrate. A numerical model coupled with electromagnetic and temperature fields is developed to understand the thermal process of laser assisted UHF induction deposition. The thermal process with different combination states of the two heat sources is numerically investigated to reveal the influence mechanism of the two heat sources on the penetration depth of the deposited layer. Results show that the UHF induction heat increases the penetration depth of the deposited layer by raising the temperature of the deposited metal, and laser heat leads to an increment in penetration depth by providing a high substrate surface temperature. Decreasing the distance between the laser beam and metal wire also increases the substrate surface temperature, thereby increasing the penetration depth. Criteria for characteristic temperatures T_(peak1), T_(peak2), and T_(interval) are proposed based on thermal process analysis to control thermal process and prevent the deposited layer from having a large penetration depth. Deposition experiments reveal the process feasibility of the proposed deposition method and validate the numerical model. The performance evaluation of the deposited layers proves that controlling the thermal process is the key for ensuring the performance of the deposited layer. The numerical model and criteria for characteristic temperatures provide an efficient way for controlling the thermal process during deposition; thus, reasonable performance of the deposited layer can be ensured.
机译：该研究提出了一种新的金属沉积方法，称为激光辅助超高频感应（UHF）沉积。在该方法中，UHF感应热量用作熔化沉积金属的主热源，并且激光热量用作辅助热源，其提供高温衬底表面，以便在沉积的金属和基板之间有效融合。开发了一种与电磁和温度场联接的数值模型，以了解激光辅助UHF感应沉积的热过程。用两个热源的不同组合状态的热过程在数量上研究，以揭示两个热源对沉积层的渗透深度的影响机理。结果表明，通过提高沉积的金属的温度，UHF感应热量通过提高沉积的金属的温度来增加沉积层的穿透深度，通过提供高衬底表面温度，激光热量导致渗透深度的增量。减小激光束和金属线之间的距离也增加了基板表面温度，从而增加了穿透深度。基于热过程分析提出了特征温度T_（峰值1），T_（峰值2）和T_（间隔）的标准，以控制热处理并防止沉积层具有大的穿透深度。沉积实验揭示了所提出的沉积方法的过程可行性并验证数值模型。沉积层的性能评估证明，控制热过程是确保沉积层性能的关键。用于特性温度的数值模型和标准提供了一种用于控制沉积期间热处理的有效方法;因此，可以确保沉积层的合理性能。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2020年第6期|119536.1-119536.21|共21页
  • 作者

    Rui Sun; Yongjun Shi; Xiaogang Wang; Yankuo Guo; Xiaoyu Zhou;

  • 作者单位

    College of Mechanical & Electronic Engineering China university of Petroleum Qingdao Shangdong 266580 China;

    College of Mechanical & Electronic Engineering China university of Petroleum Qingdao Shangdong 266580 China;

    College of Mechanical & Electronic Engineering China university of Petroleum Qingdao Shangdong 266580 China;

    College of Mechanical & Electronic Engineering China university of Petroleum Qingdao Shangdong 266580 China;

    College of Mechanical & Electronic Engineering China university of Petroleum Qingdao Shangdong 266580 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ultra-high frequency (UHF) induction heat; Thermal process; Numerical simulation; Deposition;

    机译：超高频（UHF）感应热;热过程;数值模拟;沉着;

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