• Preheating shall also be applied to the tack welding, when the weldment requires preheating.

    需要预热件,定位规定进行预热

    chazidian.com

  • Besides, centering and tack welding by laser beam should be avoided as centering point and tack-welding point can influence weld quality largely.

    焊缝质量激光中点焊点影响很大尽量避免采用激光对中点焊

    dict.cnki.net

  • Internal bolts subject to vibration, fluctuating load, impact load or dynamic load shall be protected against loosening. Double nuts, unti-loose washers, tack welding, etc. shall be used.

    可能受到振动波动载荷冲击载荷动力载荷内部螺栓加以保护防止松动采用螺母、防松动垫圈点焊

    blog.sina.com.cn

  • Tack weld shall be the same with welding process of formal welding.

    定位正式焊接焊接工艺相同

    danci.911cha.com

  • It is recommended that when welding around a perimeter, a series of tack welds should be used.

    建议焊接焊缝周围边界大头钉一系列使用

    www.tech-domain.com

  • Assemble and fit metal sections and plates to form complete units or subunits using tack welding, bolting, riveting or other methods.

    采用点焊螺栓铆接其他方法组装金属型材形成完整单元单元组。

    www.immiknow.com

  • During welding operations, except for tack or spot welding, insulation material to be removed in way of the welding.

    焊接操作期间除非间断点焊绝缘材料应从焊接处移开

    danci.911cha.com

  • During welding operations, except for tack or spot welding, insulation material to be removed in way of the welding.

    焊接操作期间除非间断点焊绝缘材料应从焊接处移开

    danci.911cha.com

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