The steel sand (also known as shot blasting abrasive) used in shot blasting machines is a key material in the surface treatment process, mainly used to clean, strengthen or polish metal workpieces. Steel sand of different materials is suitable for different scenarios. 1. Cast Steel Shot Composition: Carbon content 0.8%-1.2%, high hardness (HRC40-60). Features: strong wear resistance, long life, can be recycled many times. Use: cleaning of castings, rust removal of steel plates, and strengthening treatment (such as automotive parts, aviation parts). 2. Low Carbon Steel Shot Composition: Carbon content <0.3%, low hardness (HRC20-40). Features: good toughness, not easy to break, but wears faster. Use: light surface cleaning or workpieces with low hardness requirements (such as aluminum, thin plates). 3. Stainless Steel Shot Composition: alloys containing chromium, nickel, etc., corrosion resistant. Features: no pollution, not easy to rust, and high price. Use: polishing and cleaning of food machinery, medical equipment, and stainless steel workpieces. 4. Cut Wire Shot Manufacturing process: Cutting steel wire into cylindrical particles with sharp edges. Features: High cleaning efficiency, but easy to deform and short life. Use: Rapid descaling of large castings and forgings. 5. Alloy Steel Shot Composition: Adding elements such as manganese and silicon to improve comprehensive performance. Features: Balanced hardness and toughness, strong fatigue resistance. Use: Strengthening high-strength workpieces (such as springs and gears). 6. Zinc sand or aluminum sand (non-steel, special use) Features: Soft texture, used for precision workpieces or anti-corrosion pretreatment. Use: Surface activation before painting (such as ships and bridges). Selection points: Hardness: High hardness is suitable for heavy rust cleaning, low hardness prevents workpiece damage. Shape: Spherical (steel sand) is suitable for strengthening, angular (steel sand mixed with steel shot) is suitable for cleaning. Particle size: Common 0.2-3.0mm, coarse particles are used for thick rust layers, and fine particles are used for precision polishing. It is recommended to select appropriate steel grit according to the workpiece material, processing objectives and equipment requirements, and replenish the loss regularly to maintain shot blasting efficiency.
Uniform tempered martensite or tempered trositic site
Density
7.4g/cm3
Production Process
Company Profile
Qingdao Puhua Heavy Industrial Group was established in 2006. It focus on design, research, development, manufacturing and export of CNC punching machine, sand blasting booths, sand processing equipment, environmental protection equipment, a variety of shot blasting machine, including roller conveyor type, overhead chain type, hook type, tumble belt type, wire mesh type, road surface type etc. All products are professionally designed by our highly-experienced engineers with Auto CAD.
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