Low Carbon Rounded Steel Shot
Model/Size:S110-S930/Φ0.3mm-2.8mm
Product Detail:
Low carbon steel shots contain less carbon, phosphorus and sulfur than high carbon steel shots. Therefore, the internal micro structure of low carbon shots are much smoother. Low carbon steel shots are softer compared to high carbon steel shots too. This results in 20 – 40 % longer abrasive life time.
Key Specifications:
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PROJECT |
SPECIFICATION |
TEST METHOD |
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CHEMICAL COMPOSITION |
C |
0.08-0.2% |
P |
≤0.05% |
ISO 9556:1989 ISO 439:1982 ISO 629:1982 ISO 10714:1992 |
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Si |
0.1-2.0% |
Cr |
/ |
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Mn |
0.35-1.5% |
Mo |
/ |
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S |
≤0.05% |
Ni |
/ |
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MICROTRUCTURE |
Homogeneous Martensite or Bainite |
GB/T 19816.5-2005 |
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Density |
≥7.0-10³kg/m³（7.0kg/dm³） |
GB/T 19816.4-2005 |
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EXTERNALFORM |
Air hole < 10%. Conjoins. Sharp corner. Deformity Rate< 10% |
Visual |
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HARDNESS |
HV:390-530(HRC39.8-51.1) |
GB/T 19816.3-2005 |
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Processing Steps:
Scrap→Select&Cutting→Melting→Refine(decarbonize)→Atomizing→Drying→Scalper Screening→Spiralizing&Blowing to remove the air hole→The first quenching→Drying→Derusting→The second tempering→Cooling→Fine Screening→Packing&Warehousing
Applications:
Typical application areas: pre-treatment of steel or cast-iron surfaces before painting, descaling and rust removal, deburring.
Advantages:
① Ideal for use to provide clean, polished metal surface.
② Low carbon steel shots are used in both turbine and compressed air blasting systems. Low carbon steel shots ensure lower turbine blades wear.
③Low carbon steel shots life cycle is about 30% longer than conventional high carbon steel shots.
④ Shot blasting process produces less dust, that results in lower maintenance costs of filtration system.
Why Low Carbon?
Low carbon and high manganese steel shot have high impact absorption capacity, impacts are distributed uniformly throughout the shot.
During shot blasting operations, low carbon steel shot is peeled down into thin layers similar to the layers of onions for up to 80 percent of their life due to wear, and are only broken into small pieces due to fatigue of the material. Machine and blade erosion are also significantly reduced as they are divided into lesser and smaller parts.
High carbon steel shot particles however are broken into large and angular pieces in a short time due to the crack structure formed during production. With this feature, the machine causes high extra costs on turbine equipment and filters.
