This paper describes the methods of controlling the frame quality in terms of process design, mould design, control of deformation and defects from welding surface treatment, etc.
从工艺设计、胎具设计、控制焊接变形和缺陷、表面处理等各环节实行严格的品质控制，多年来生产出多种型号的车架全部为合格品。
This paper interprets the short-circuit arc welding process and the process stability. The evaluation methods and criteria for the short-circuit arc welding process are introduced and discussed.
简述了短路电弧焊接的物理过程及过程稳定性概念，介绍了有关短路焊接过程稳定性各种评价方法及相应准则，最后对其进行了必要的讨论。
Some methods used in the control of welding deformation, such as reverse deformation, system analysis, controlling process parameters and temperature field, are introduced.
同时介绍了控制焊接变形的几种方法，如反变形法、控制工艺参数、控制温度场以及系统综合分析等。
The fuzzy control techniques for arc welding power source, seal tracking and arc welding quality is analyzed. The fuzzy logic application methods in arc welding process control is discussed.
分析了焊接电源、焊缝跟踪和焊接质量的模糊控制技术，探讨了模糊逻辑在弧焊过程控制的应用途径。
Considering the characteristics of the process piping butt weld, this article analyzes the welding methods, the welding positions and the defects which are easily produced.
针对工艺管道对接焊缝的特点，对焊接方法、焊接位置及易产生的缺陷进行了分析。
The resistance spot welding process of mild steel was studied by experimental and finite element methods.
采用试验和有限元数值模拟的方法，对汽车车身低碳钢电阻点焊的过程进行了研究。
The difficulties and resolve methods concern with SA-335P91 made header fabrication process are introduced herein such as header ruling, girth welding, nozzle and accessories.
针对高温强度较高的SA- 335P91材料在产品中的应用，尤其是在集箱制造工艺上的情况进行了简介。
In actual body-welding process, the change of technological methods makes all welding factors meet the technological requirements, and to achieve the result of improving the body-welding quality.
在实际的车身焊接工作中，通过改变工艺方法，保证了各个焊接因素满足工艺要求，从而达到保证和提高车身焊接质量的目的。
The effective methods to avoid the cracking include lowering strictly the content of impurity and adopting low temperature welding process.
有效的改进措施是严格控制杂质含量、将高温焊接工艺改为低温焊接工艺。
Stereology is used widely in numerical simulation of welding process other than in experimental observation and detection by traditional methods.
体视学图象技术除了在传统的焊接实验观察检测领域中的应用以外，在焊接数值模拟中也得到了广泛的应用。
Stereology is used widely in numerical simulation of welding process other than in experimental observation and detection by traditional methods.
体视学图象技术除了在传统的焊接实验观察检测领域中的应用以外，在焊接数值模拟中也得到了广泛的应用。
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