黄大坤

[摘    要]振动摩擦焊接作为一种新型焊接工艺，解决了传统焊融类工艺对非金属材质加工困难的情况，由于自身工艺特点，与传统焊接工艺相比，具备优质高效、节能无污染等优点，因此在非金属焊接领域应用越来越广泛。随着实际运用对焊接精深度要求越来越高，加工过程中发现实际值普遍高于理论值的情况，导致部分焊接产品不合格率低于期望值。运用六西格玛分析方法，在现有摩擦焊接过程原理基础上，结合设备运行流程，设计测试分析方案，并从测试数据中找出遗漏影响的因子-保压时间。最后运用六西格玛回归分析得出保压时间与焊接深度的函数关系，用于指导现场工艺参数设置、质量实验等实际场景的应用。

[关键词]测量系统;影响因子;回归分析

[中图分类号]TG439.9 [文献标志码]A [文章编号]2095–6487（2021）03–00–03

[Abstract]As a new type of welding process， vibration friction welding solves the problem that traditional welding and melting process is difficult to process non-metallic materials. Due to its own process characteristics， compared with traditional welding process， it has the advantages of high quality， high efficiency， energy saving and no pollution， so it is more and more widely used in the field of non-metallic welding. With the actual use of more and more high requirements for the depth of welding precision， it is found that the actual value is generally higher than the theoretical value in the process of processing， resulting in the unqualified rate of some welding products is lower than the expected value. In this paper， based on the existing friction welding process principle， combined with the equipment operation process， the test analysis scheme is designed by using six sigma analysis method， and the missing influence factor - holding time is found out from the test data. Finally， the functional relationship between holding time and welding depth is obtained by using Six Sigma regression analysis， which is used to guide the application of field process parameter setting， quality experiment and other practical scenarios.

[Keywords]measurement system; impact factor; regression analysis

1 研究背景

隨着焊接结构的应用越来越普遍，常规的焊熔工艺对塑料等非金属材质焊接加工困难;而新型的振动摩擦焊接加工工艺则解决了这一加工难题。振动摩擦焊接工艺是一种固态结合焊接工艺过程，即两个焊接工件做相对运动或旋转，在压力下对接，由于接触面产生热量，使焊件材料从接触面塑性地相互渗透融合，在振动停止后，熔融塑料层固化，并产生一个坚固的接头（见图1）。与常规焊熔加工工艺比较，无需要焊条、焊剂和保护气体等加工条件，属于优质高效、节能无污染的新型焊接技术。

随着振动摩擦焊接工艺在非金属行业大量应用，对焊接精度要求越来越高，其中对焊接深度参数要求尤为明显;在应用中，普遍反馈实际的焊接深度比理论设定的焊接深度值偏大，导致部分产品合格率低于期望值。……