High-precision cast iron base table need to be manufactured by manual scraping. The cast iron plate is manually scraped after being machined by the machine tool.

The difference between annealing and tempering is: (simply put, annealing means that no hardness is required, and tempering still retains a certain degree of hardness).

1. styling Using the clay sand wet casting process, a box of 2 pieces, the upper box eats 75mm of sand, the lower box eats 60mm, and the surrounding sand eats 35mm. It adopts template shape, and the parting surface is sprinkled with quartz powder. It adopts a closed gate with two internal gates of 12mmx25mm and a straight gate of 60mm.

Classification: The main materials of the grate are heat-resistant iron, heat-resistant high-chromium cast iron, ordinary cast steel, high-chromium-nickel heat-resistant cast steel, etc.

1. Make a model according to the cast iron flat drawing approved by the purchaser, and prepare the casting tooling (sand box, core iron), etc.

The quality of machine tool castings includes appearance quality and internal quality (usually refers to the casting material) and design quality (refers to the quality of use); and the appearance quality refers to the surface roughness, surface defects, dimensional deviation, shape deviation, and weight deviation of the machine tool casting.