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  In modern industry, steel grit, as an essential abrasive, is widely used in metal surface cleaning, deburring, derusting, and surface strengthening treatments. With the development of industrial technology, the quality requirements for steel grit are becoming increasingly stringent.

  Definition and Applications of Steel Grit:

  Steel grit is an abrasive made from high-carbon steel or alloy steel scrap through special processing techniques.It finds extensive applications in polishing and grinding of metallurgy, hardware, glass, gemstones,nd jade, as well as in the manufacturing of abrasives. The primary uses of steel grit also include metal surface derusting, sand removal, and stone cutting.

(G12)

  High-quality steel grit should meet the following criteria:

  1.Chemical Composition: The chemical composition of high-quality steel grit should adhere to strict standards, with a carbon content of 0.8%-1.2%, manganese content of 0.35%-1.2%,silicon content of no less than 0.4%, and sulfur and phosphorus contents controlled below 0.05%.

  2.Physical Properties: The microhardness should range between 390HV-530HV, with a density of no less than 7.0g/cm³. The total defects should not exceed 40%, foreign impurities should be less than 1%,and the moisture content should be controlled below 0.2%.

  3.Particle Size and Shape: The particle size should be uniform, and the shape should predominantly be polygonal,which enhances the efficiency and quality of surface treatment.

  4.Surface Treatment Effect: The metal surface cleaned with steel grit should meet international standards, with a surface roughness between 25-150um.This increases the contact area of the metal surface and improves the adhesion of coatings.

(The latest enterprise standard of Wuhan Hongxin Lixin Metal Products Co., Ltd.)

  Market Data:

  According to market research reports, the internet steel grit market size is expected to be 1.1billion in 2023 and isprojected toreach 2.3 billion by 2030, with a compound annual growth rate of 8.4%.This data indicates that, with the growth in industrial demand, the demand for high-quality steel grit is also on the rise.

  Industry Standards and Certifications:

  The production and application of steel grit follow strict national standards, such as China's  GB/T18838.3-2008 standard. These standards have clear requirements for the chemical composition, physical properties,  and application effects of steel grit. Additionally, there are explicit specifications for the marking and classification of steel grit products.For example, cast steel grit with a particle size of 2.0mm and a hardness of H is marked as: CSG-20H.

(Corrosion protection projects that Hongxin Lixin has participated in)

  High-quality steel grit is an indispensable material for industrial surface treatment.It should possess good chemical composition, physical properties, uniform particle size, and shape characteristics,as well as meeting international standards for surface treatment effects. With the continuous expansion of the internet market, the demand for high-quality steel grit is increasing, requiring manufacturers to continuously optimize production processes and improve product quality to meet the high standards of the market and industrial applications.

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