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Abrasive Steel Shots

Abrasive Steel Shots
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Product Code : 34
Product Description

Abrasive Steel Shots are perfect materials to be used in the surface preparation process. They are designed for cleaning the surfaces covered with ruts, mill scale, dirt, and paint coating. This can be employed in physically modifying metal surfaces.

The high-quality steel block, steel scraps as well as wool are melted and then poured by high-speed centrifugal molding employing a centrifugal disk so that the surface temperature is drastically lowered to develop a pellet, which is a quenching. The quenched pellets are then dried and reheated to attain the appropriate hardness. The tempered steel pellets are then sorted into SAE-compliant products by mechanical screen of diverse grades for shot peening equipment.

The outstanding heat treatment control process ensures high-elasticity and fatigue resistance property of the steel balls. They are provided in different particle sizes and hardness to make them ideal for shot peening process in large quantities and heavy parts. They are used for descaling of steel work pieces and sand cleaning of castings. They the best abrasive for surface cleaning when used with the right equipment.

Application Areas:

  • Automotive industry
  • Aviation industry
  • Casting
  • Consumer goods manufacturing industry
  • Container manufacturing/repairing
  • Granite/stone cutting
  • Oil and gas pipelines
  • Plant maintenance and metalworking
  • Sand blasting/painting manufacturing industry
  • Shipbuilding and ship repairing

Applicable Process Range:

Surface pretreatment before pipe descaling, strengthening, painting and sand cleaning
Moderate hardness, long service life, toughness and impact resistance up to 2000-2900 times are some of their excellent features. They come with excellent rebound, fast cleaning speed and good technical effect. The surface cleanliness can reach GB/T8923-1989 and surface roughness reaches Rz=10--150μm that enhance the metal surface area and surface adhesion of the coating.
(1) Iron Pills: The hardness is generally HRC 40 ~ 50 that enhance the hardness to HRC 57 ~ 62. They come with excellent toughness
(2) Cast iron pill: The hardness is HRC 58-65 that makes it brittle and easy to break. It is used in the places, where high shot peening is required.
(3) Glass Pills: The hardness of the glass pellets is lower than the first two pellets. They are used in magnesium, stainless steel, titanium, aluminum, and other conditions. They are also used in the second treatment after steel shot peening for removing iron pollution and roughness of the surface of the part.

Prime Technical Requirements For High Carbon Steel Shot:

  • Chemical composition: carbon: 0.8% - 1.2%, manganese: 0.6% - 1.2%, silicon: 0.4% - 1.2%, sulfur, phosphorus: ≤ 0.05%;
  • Density ≥7.0g/cm3;
  • Foreign impurities ≤ 1%;
  • Metallographic organization: tempered martensite or tempered troostite;
  • Microhardness: 390HV-530HV;
  • Specification grade: S400~S030;
  • The total amount of defects is ≤10%;
  • Water content ≤ 0.2%.

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