Process Optimization and Residual Stress Measurement for Arc Spraying Rapid Tooling

doi:10.7652/xjtuxb201412020

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Process Optimization and Residual Stress Measurement for Arc Spraying Rapid Tooling

更新时间：2025-07-09

- Process Optimization and Residual Stress Measurement for Arc Spraying Rapid Tooling
- Vol. 48, Issue 12, Pages: 126-130(2014)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710054
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201412020
  CLC： TG174.442
- Online First：10 December 2014，
  
  Published：2014
- 稿件说明：
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Process Optimization and Residual Stress Measurement for Arc Spraying Rapid Tooling[J]. 2014, 48(12): 126-130.
DOI：

Process Optimization and Residual Stress Measurement for Arc Spraying Rapid Tooling[J]. 2014, 48(12): 126-130. DOI： 10.7652/xjtuxb201412020.

摘要

以降低电弧喷涂厚涂层内应力为目的

对曲率法所依据的Stoney公式进行了修正。采用修正后的曲率法较稳定可靠地检测出了厚涂层的平均内应力

优化了喷涂工艺

提高了模具的成形精度

并成功应用于长为2 m的汽车外饰钣金件冲压模具制作。实验研究喷涂工艺(喷涂距离、喷涂电流、扫描轨迹和扫描速度)与涂层内应力之间的定量关系后发现:涂层内应力与单层涂层厚度呈现相似的变化趋势

但变化比例并不是一一相对应的; 内应力随喷涂距离和扫描速度的增加以及喷涂电流的减小而递减

受扫描轨迹影响最显著。通过优化工艺

使涂层内应力降低了27.5%～63.9%。

Abstract

To reduce the residual stress in thick arc spraying coatings

Stoney formulation

which is the basis of the curvature method

was modified to reliably test the average residual stress. The process was then optimized with improved accuracy and was successfully applied to manufacturing a long stamping die of 2 m for an automobile external sheet metal part. Experimentally analyzing the relationship of the process parameters such as spraying distance

current

scanning path and speed with the residual stress

it is found that residual stress similarly tends to vary as the single layer coating thickness but with different varying proportion; residual stress is most significantly influenced by scanning path; the stress decreases steadily with the increasing spraying distance and scanning speed

and with the reducing spraying current; the residual stress is finally reduced by 27.5% to 63.9% via optimizing the process parameters.

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Keywords

references

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