Due to various reasons, cast iron finished products in use process will be affected by damage, defects such as cracks, make its scrap.If you want to change new, cast iron finished products are all kinds of mechanical processing, tend to be expensive.Especially in some heavy type cast iron finished products, such as cast iron stand once the improper use of forging equipment and appear crack, have to stop production, if you want to replace the new forging equipment, not only expensive, and from the order, delivery to the installation and debugging often takes a long time, to be a long time in the shutdown state.The loss is huge.If can use welding method to repair the crack in a timely manner.Caster glueSimple, rough casting, general repair don't need after processing, and no special strength hardness requirements.This type of casting added value is low.