1. Welding repair of casting defects
The annual output of various cast irons in China is about 8 million tons. Castings with various casting defects account for about 10% to 15% of the annual output of cast iron, which is commonly known as the scrap rate of 10% to 15%. The work was scrapped. Based on the average price of cast iron in 1997, the loss was as high as 1 billion yuan per year. The use of welding methods to repair these defective cast iron parts, because of the low welding cost, not only can obtain huge economic benefits, but also facilitate the timely completion of production tasks.
2. Welding repair of damaged cast iron finished parts.
For various reasons, the cast iron finished parts will be damaged during use, and defects such as cracks will occur, making them scrapped. To replace the new ones, the cast iron finished parts are subjected to various mechanical processing, and the price is often more expensive.
In particular, some heavy-duty cast iron finished parts, such as forged equipment, have cracks in the cast iron frame, and they have to stop production. If you want to replace the new forging equipment, it is not only expensive, but also from ordering, shipping to installation and commissioning. It often takes a long time and it takes a long time to stop production.
The losses in this area are enormous. Repair the cracks in time by welding.