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用于强度要求不高的灰口铸铁件的焊补。For repair welding on general grey cast iron weldment.

常用的方法是先把钢板焊起来再镀锌。It is more usual to complete the weldment first and then to galvanize it.

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所以常用的方法是先把钢板焊起来再镀锌。It is more usual to complete the weldment first and then to galvanize it.

并阐述了焊接件的应用及其经济效益。The application of weldment and its economic efficiency is also described.

用于球墨铸铁、高强度铸铁件加工面和非加工面的补焊。For repair welding of thin-wall weldment and working side of grey cast iron.

为了获得期望的特性，对焊接件进行的加热及冷却。Heating and cooling a weldment in such a way as to obtain desired properties.

此外，必须刹车杆弯曲，以便它可以清除转向臂焊件。In addition, the brake lever must be bent so that it can clear the steering arm weldment.

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裂纹尖端的延伸区宽度和起裂韧性具有良好的关系。The initiation toughness has a linear relationship with stretch zone width in the weldment.

需要预热的焊件，定位焊时也应按规定进行预热。Preheating shall also be applied to the tack welding, when the weldment requires preheating.

采用有限元分析法和X射线应力测试法对铍环形焊件的残余应力分布规律进行了研究。The residual stress of the beryllium ring weldment was studied by FEM simulation and X ray stress measurement.

十多年品牌，起弧快速、飞溅小、焊道美观、效率高。For decade of years, this machine was famous in quick arc-starting, less spatter, good weldment and cost saving.

电阻点焊接头的焊接强度由母材和熔核的材料属性及几何特征决定。Strength of resistance spot weld is determined by the physical attributes of weldment including material and geometric issues.

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介绍不同焊接工艺对厢形梁焊接残余应力的影响及校直前后其残余应力的变化。The effect of different welding techniques, and alignment after welding, on the residual stress of rectangular girder weldment was studied.

探讨了硅酸铝保温缓冷焊接条件下能防止焊接冷裂纹的原因。The reason for preventing the weld joint from cold cracking with this kind of insulator to keep the weldment cooling slowdown is discussed also.

大多数金属粉芯焊丝都具有低的气孔倾向，良好的焊缝侧壁成型，从而降低焊后修补的工作量。Most can minimize porosity and provide good side-wall fusion to reduce instances of undercut in the final weldment and rework on defective parts.

汽车底盘焊接件工作环境恶劣，采用阴极电泳涂装，可大大提高工件的耐腐蚀性。The corrosion resistance of automotive chassis weldment in the severe working condition can be remarkably improved using electrophoretic painting.

UN250对焊机采用手动闪光预热、液压顶锻的方式，适合焊接大直径大截面的焊件。The UN250 butt-welding machine adopts manual flash prewarming, hydraulic pressure upset mode, is suitable to weld large diameter and section weldment.

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整个焊接板由弹性变形区、压缩塑性变形区、拉伸塑性变形区和熔池组成。Whole weldment includes practically elastic deformation zone, compressive plastic deformation zone, tensile plastic deformation zone and melting pool.

以振动时效机理和应力腐蚀机理中阳极溶解理论为基础，解释了振动时效提高焊件抗应力腐蚀的本质。On the basis of VSR and the theory of positive dissolving in stress corrosion, the nature of stress corrosion resistance of the weldment was explained.

调质处理前焊缝和热影响区中晶粒尺寸分布较为均匀，而调质处理后主要以小尺寸晶粒为主。Before QT treatment, grain size distributions in weldment and matrix are relatively homogenous, while after QT treatment the small grains are preponderant.