Production process of surface treatment materials

1.Smelting

Adopt electric arc furnace for smelting to adjust molten steel composition and reduce the content of harmful elements sulfur and phosphorus.

2.Refining

Use refining furnace to purify molten steel, so as to obtain higher purity and endow steel shots with better material properties.

3.Forming

High-speed centrifugal casting effectively controls the forming quality and reduces physical defects.

4.Selection

Effectively separate defective particles such as hollow and irregular ones to improve the density of steel shots.

5.Quenching

Secondary quenching refines grains, makes the internal metallographic structure denser and enhances impact toughness.

6.Tempering

Further refine the internal structure to meet different hardness requirements. Precise control of temperature and time optimizes the uniformity of microstructure and hardness.

7.Crushing

The unique crushing process improves the fullness and angularity of steel grit particles, and minimizes internal cracks.

8.Screening

Precise particle size control ensures products comply with the US SAE-J444 standard.

9.Packing

The automatic packaging line guarantees the quality and accurate quantity of product packaging.