Insize Manual Rockwell and Superficial Rockwell Hardness Tester, HDT-RSR100

Insize Manual Rockwell and Superficial Rockwell Hardness Tester, HDT-RSR100 is a precision instrument used to determine the hardness of materials, particularly metals. They apply a standard measuring force to an indenter and measure the depth of penetration to assess the material's hardness. The difference between the two lies in the applied test forces and their suitability for different material types and thicknesses.

Manual Rockwell Hardness Tester:

Test Procedure: A typical manual Rockwell hardness test involves applying a major load (usually 60, 100, or 150 kgf) to a specially shaped diamond or hardened steel ball indenter on the material's surface. The indenter is initially in contact with the material with a minor load (commonly 10 kgf). Once the major load is applied, the indenter penetrates the material, leaving an impression.

Measurement: The depth of penetration, or the increase in indentation depth, is measured. The Rockwell hardness number (e.g., HRC for hardened steel) is determined based on the depth and a reference point on a standardized scale.

Applications: Manual Rockwell testers are used in a wide range of industries, including metallurgy, manufacturing, and quality control, for assessing the hardness of various metals, alloys, and heat-treated materials.

Superficial Rockwell Hardness Tester:

Test Procedure: Superficial Rockwell hardness testing is similar to the standard Rockwell test but applies much lighter loads, typically 3, 15, or 30 kgf. These lighter loads are better suited for thinner materials and surface treatments.

Measurement: The procedure and measurement are nearly identical to the manual Rockwell test, but the reference scale and hardness numbers are different. The resulting Superficial Rockwell hardness number (e.g., HR15N) is used to assess materials where a shallow penetration is preferred.

Applications: Superficial Rockwell testing is ideal for thin sheets, coatings, surface treatments, and other cases where minimizing damage to the material's structure is essential. It is commonly used in industries like automotive, aerospace, and electronics for quality control and materials evaluation.

Both manual Rockwell and Superficial Rockwell Hardness Testers are valuable tools for assessing the hardness of materials, helping manufacturers maintain quality standards and make informed decisions about material selection and processing. The choice between them depends on the material's thickness and the depth of indentation that can be accepted without compromising the material's integrity.

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