tack welding

基本解释

Double nuts, unti-loose washers, tack welding, etc. shall be used.
可采用双螺母、防松动垫圈、点焊等。
A new seat ring, including a crimped in O-ring can easily be put back into place and secured there by tack welding the retainers.
新式阀座密封环，包括O形环内的波纹可以轻松的放置到原有的位置，通过对固定环进行点焊来确保安全紧固。
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、冲击载荷或动力载荷的内部螺栓应加以保护防止松动。可采用双螺母、防松动垫圈、点焊等。
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short intermittent welds made to hold components in place before full welding is begun