焊接的

Reduce the melting zone porosity methods include: welding pre-cleaning, welding process using inert gas welding area and selection of the full protection of the lower cooling rate of the welding parameters.

降低熔化区气孔率的方法包括：焊前清洗、焊接过程中用惰性气体充分保护焊接区和选择较低冷却速度的焊接参数。

A commonly observed welding defect characteristically occurs at high-speed welding, such as humping weld. Humping is the periodic occurrence of beadlike protuberances.

但焊接速度提高的同时也更容易产生焊接缺陷，如驼峰焊道，即焊缝金属沿焊接方向上分布严重不均的焊缝成形缺陷。

Distribution features for TIG welding arc ultraviolet spec tr um associated with various of welding parameters have been acquired, and inform ations of welding arc ultraviolet spectrum also have been analyzed.

针对焊接电弧紫外光谱信息的研究，研制了一套焊接电弧紫外光谱计算机采集和处理系统。利用此系统对TIG焊电弧紫外光谱进行了研究，成功地获得了不同焊接规范下的电弧紫外光谱频谱分布特征，并对此进行了分析。

By means of scanning electron microscope and EDS test, the factors which have a great influence on the ultrasonic wire bonding between the CdZnTe electrode and the Au down-lead are studied, such as surface treatment technology, electrode thickness of CZT wafer and ultrasonic welding parameters.

采用扫描电镜及EDS测试研究了高电阻CdZnTe金电极与外引线的超声焊接工艺，探讨了CdZnTe表面处理工艺、接触电极厚度及焊接参数对引线超声焊接质量的影响规律。

Furthermore, the bonding pressure and welding power have a great effect on the ultrasonic wire bonding rates between the down-lead wire and the CZT contact electrode after the electrode layer preparation technology of CZT wafer is fixed on.

此外，CZT接触电极制备工艺和楔入压力都是影响CZT接触电极与引线超声波焊接质量的主要因素，当CZT接触电极制备工艺确定后，楔入压力成为影响CZT接触电极与引线超声波焊接质量的主要因素，焊接功率则为次要因素。

This paper adopts Goldak heat source model in which the distribution of heat on surface satisfied Gauss function and the inner heat distributes in double ellipsoids function.

因此焊接温度场的准确计算是焊接冶金分析，残余应力与变形计算以及焊接质量控制的前提。

The system which use PLC as the control core and industrial computer as assisted control core, can in real-time control the fiber laser,welding fixture,gas path,waterway,detection and monitoring,safety doors and real-time communication with the welding robot.

为了适应和满足我国自主品牌新车型开发和小批量生产定制，为了适用汽车的小型化、轻量化以及耐腐蚀性能，本文设计了一种以PLC为控制核心，工业计算机为辅助控制核心，实时控制光纤激光器，焊接夹具，气路，水路，检测与监控，安全门和实时与焊接机器人通信的激光焊接生产线控制系统。

Provide Guidance to Welders in terms of welding technique and quality and solve problems in the welding process to ensure the work piece meets schedule.

对焊接工人提供焊接技术和质量方面的指导，解决焊接过程中出现的问题以保证生产计划

Provide Guidance to Welders in Terms of Welding Technique and Quality and Solve Problems In the Welding Process to Ensure the Work piece Meets Schedule and Quality.

对焊接工人提供焊接技术和质量方面的指导，解决焊接过程中出现的问题。

Weld the inside longitudinal seam of the tack welded pipe with fixed welding heads by moving the pipe.

采用纵列四丝埋弧焊在钢管内侧进行焊接，工件移动，焊头固定的焊接方式，有利于焊接质量的控制。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。