Can cast iron and steel plates be welded?
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One piece of equipment has a base made of cast iron, which needs to be welded to a steel platform (Q235A). However, the engineer on site said that cast iron cannot be welded – is that true?
Reply 1# zjuscq: It cannot be welded, but you can try using stainless steel welding rods! If nothing else works, use screws to fix it!
It can be welded, but attention should be paid to the following: when working outdoors or in rural areas, it is necessary to keep the working environment relatively enclosed, take measures to protect against wind, and reduce air circulation. II. Preheat the welding area and its surrounding areas using an acetylene welder, and then proceed with welding once a certain temperature is reached. III. Tap while welding to release and eliminate stress. IV. Slow cooling is the correct approach; after welding, use a torch with a gentle airflow to heat the area slowly, in order to prevent a sharp drop in temperature at the welded site.
These two materials differ significantly in their composition, making welding difficult; moreover, cracks appear in the welds. However, your goal is fixed, so the method for the 3rd floor can be used.
Even after welding, it’s not secure; it’s better to fix it with screws
Better not; I’ve decided to change the base structure