As is well known, spot welding is commonly used to connect metal parts and is very effective in dealing with damaged or cracked metal objects. Can spot welding be used to repair problems such as cracks in the body of hydraulic jacks?

Firstly, it can be clearly stated that if there are cracks in the body of a hydraulic jack, the jack is basically declared scrapped. Even if these cracks can be welded to death by spot welding, it will only treat the symptoms and not the root cause, because the metal strength at the location treated by spot welding has already decreased significantly, making it difficult to withstand huge loads anymore.

It should be noted that during the use of hydraulic jacks, there will be a huge hydraulic pressure inside, which will act on every position on the inner wall of the entire hydraulic jack. If the body strength of the hydraulic jack is not enough, it is very likely that hydraulic oil will overflow or even the entire hydraulic jack will burst. Therefore, spot welding treatment is basically useless for hydraulic jacks.

So we must take good care of the hydraulic jack in daily life, operate it in a standardized manner, and remember not to engage in overloading behavior. Only in this way can we maintain the integrity of the hydraulic jack for a long time.