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In-depth analysis: the difference between steel shot and steel grit

Release time:

2024-08-29 15:38

Both steel shot and steel grit are commonly used abrasive materials in industry, and despite their many similarities, there are some significant differences in shape, application and performance. This article will compare steel shot and steel grit in detail to help readers better understand the characteristics and uses of both materials.

steel shot

Shape and structure:

Steel shot is usually spherical or nearly spherical particles. This shape allows for an even distribution of impact during use.

Material and Manufacturing Process:

Steel shot is usually made from high carbon steel, stainless steel or other alloy steels. The manufacturing process involves melting, blasting and cooling, resulting in spherical pellets.

Applications:

Steel shot is primarily used for shot peening and surface peening. Shot peening effectively removes oxidized skin, rust and old coatings through the impact of the steel shot, while also increasing the fatigue life of the metal surface.

It is suitable for workpieces that require high surface finish, such as automotive parts, aerospace equipment and precision machinery.

Performance Characteristics:

The spherical structure of the steel shot produces a uniform stress distribution on impact, reducing surface damage.

Longer service life and can be reused many times. Produces a more uniform and smooth surface finish.

steel grit

Shape and structure:

The particles of steel grit are irregularly shaped and usually exhibit a polygonal shape. This shape gives it greater cutting and grinding capabilities.

Material and manufacturing process:

Steel grit is also made from high carbon steel, stainless steel or other alloy steels. The manufacturing process usually involves crushing and screening to form irregular particles.

Applications:

Steel grit is mainly used for sandblasting, rust removal, oxide removal and surface roughening. Due to its strong cutting ability, it is suitable for workpieces that require high surface roughness.

It is commonly used for surface treatment of shipbuilding, bridges, steel structures, pipelines and large mechanical equipment.

Performance Characteristics:

The multi-angled shape of the steel grit enables it to remove material more effectively during surface treatment, producing a higher surface roughness.

High grinding capacity and high processing efficiency. Although the service life is relatively short compared to steel shot, its cutting ability gives it an irreplaceable advantage in specific applications.

Selection basis

Depending on the requirements of the workpiece:

If a high surface finish and uniform stress distribution are required, steel shot is a better choice.

If a high surface roughness and a strong removal capacity are required, steel grit is more suitable.

Depending on the treatment process:

For shot blasting and surface peening, steel shot is more commonly used.

For blasting and surface roughening, steel grit is more commonly used.

Economy:

Steel shot, due to its long service life, is suitable for applications requiring multiple reuse.

Although steel grit has a shorter service life, it has an advantage in terms of one-time processing efficiency.

To summarize, steel shot and steel grit each have their own unique properties and application scenarios. Selection of the appropriate abrasive should be based on specific workpiece requirements, treatment process and economics.

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