Natural aging means that if the cast iron platform is stored at room temperature or under natural conditions for a long time, the residual stress is relaxed and the dimensional accuracy is stabilized, which is called natural aging treatment.

1. Fine scraping is to scrape off the high points after rough scraping. The point is to use the short scraping method (the width of the knife mark is about 6mm and the length of 5mm~10mm), and the grinding point is scattered quickly.

Counterweight iron can be used as accessories for different products in different fields, which fully plays the role of increasing weight and maintaining balance.

1. The cast iron platform is not suitable for installation in places with humidity, away from heat sources, corrosive gases and corrosive liquids.

For the foundry industry, the phenomenon of weight error of cast iron plate castings is relatively common, but the consequences of different degrees of loss are different. If the weight error of cast iron plate cast iron exceeds 5%, the integrity of the cast iron plate will be caused.

1. There should be no rust, scratches, bumps and other appearance defects affecting the use on the working surface of the platform.