tack welding

基本解释

Double nuts, unti-loose washers, tack welding, etc. shall be used.
可採用雙螺母、防松動墊圈、點銲等。
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.
新式閥座密封環，包括O形環內的波紋可以輕松的放置到原有的位置，通過對固定環進行點銲來確保安全緊固。
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.
可能受到振動、波動載荷、沖擊載荷或動力載荷的內部螺栓應加以保護防止松動。可採用雙螺母、防松動墊圈、點銲等。
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short intermittent welds made to hold components in place before full welding is begun