The national standard steel shot and steel sand 1.4-2.5 secondary quenching process greatly improves the service life of steel shot

Description :

　　The national requirements for steel shot production standards are:

　　We strictly follow the national standard GB/T18838.3-2008 for the production of high carbon cast steel pellets and sand.

　　Main technical indicators of steel shot:

　　Name (Steel Ball) Cast Steel Ball

　　Chemical composition: Carbon (C) 0.70-1.20%

　　Manganese (Mn) 0.35~1.20%

　　Silicon (Si) 0.40~1.20%

　　Sulfur (S) ≤ 0.05%

　　Phosphorus (P) ≤ 0.05%

　　Average hardness

　　(Measured under 500g load)

　　Conventional: 40~50HRC (377~509HV)

　　Special: 52~56HRC (543~620HV)

　　Special: 56~60HRC (620~713HV)

　　The maximum deviation range for hardness is ± 3.0HRC or ± 40HV

　　Uniformly tempered martensite or tempered martensite with dispersed carbides in the metallographic structure

　　Min density

　　(measured by alcohol displacement method) 7.2g/cm3

　　Application scope of steel shot:

　　1. Cleaning: shot blasting cleaning, shot blasting cleaning, die casting cleaning, casting shot blasting cleaning, forging shot blasting cleaning, forging shot blasting cleaning, casting sand cleaning, steel plate cleaning, steel plate cleaning, H-beam cleaning, steel structure cleaning.

　　2. Rust removal: shot blasting rust removal, shot blasting rust removal, casting rust removal, forging rust removal, steel plate rust removal, forging rust removal, steel rust removal, H-beam rust removal, steel structure rust removal.

　　3. Strengthening: shot blasting strengthening, heat treated parts shot blasting strengthening, gear shot blasting strengthening.

　　4. Shot blasting: steel section shot blasting, steel section shot blasting, ship plate shot blasting, steel plate shot blasting, steel shot blasting.

　　5. Shot blasting: steel plate shot blasting, steel shot blasting, section steel shot blasting.

　　6. Sandblasting: Sandblasting treatment.

　　7. Steel shot pretreatment: pre-treatment before painting, pre-treatment before painting, surface pre-treatment, pre-treatment of ship plates, pre-treatment of steel sections, pre-treatment of steel materials, pre-treatment of steel plates, pre-treatment of steel structures.

　　Applicable equipment for steel shot:

　　Steel shot is mainly suitable for drum type, chain type, hook type, track type, through type, rotary table type, accumulation type, step type, trolley type shot blasting machines (shot blasting machines), shot blasting cleaning machines, shot blasting equipment, shot blasting machines, shot blasting equipment, sandblasting machines, sandblasting equipment, rust removal equipment, steel pretreatment production lines, steel plate pretreatment production lines, steel structure pretreatment production lines, and equipment in sand rooms.

　　Steel shot is a universal metal abrasive widely used in surface treatment of metal products, such as ships, automobiles, bridges, steel structures, power plants, locomotives, containers, and thousands of other products and industries. Steel shot is used for surface cleaning of workpieces, surface treatment before coating, and shot peening. The outstanding advantages of steel shot are impact resistance, good toughness, and high cleaning efficiency.

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• National standard steel shot and steel sand