As a comprehensive instrument integrating Brinell, Rockwell, and Vickers hardness testing methods, the core mystery of the Blowe hardness tester lies in its modular design and precision mechanical structure, which enables compatibility and accurate measurement of multiple hardness scales with a single device.

At the technical principle level, the Blowe hardness tester adapts to three hardness testing requirements by replacing different indenters and adjusting the test force. The Brinell hardness test uses a 10mm diameter hard alloy ball or quenched steel ball indenter, applies a load of 3000kgf, and calculates the hardness value by measuring the indentation diameter. It is suitable for low hardness materials such as annealed steel and cast iron; The Rockwell hardness test uses a diamond cone or 1.588mm steel ball indenter, which is pressed into the surface of the material with a main load of 150kgf. The residual indentation depth increment is directly read, especially suitable for high hardness materials and thin parts such as quenched and tempered steel; The Vickers hardness test uses a 136 ° diamond pyramid indenter, which is pressed into the material with a test force of 5-980N. The diagonal length of the indentation is measured to calculate the hardness value. It can cover a full range of materials from extremely soft to extremely hard, especially suitable for thin layers, coatings, and small parts.

At the mechanical structure level, the Blowe hardness tester ensures the independence and stability of the three testing methods through high-precision spindle, frictionless loading system, and multi-stage test force control module. For example, the HBRVS-187.5 digital Blowe hardness tester adopts electronic closed-loop control of test force, with an accuracy of 5 ‰, and can automatically complete the application, maintenance, and removal of test force; The body is equipped with a high-definition microscope optical system and micrometer, which ensures that the indentation measurement error is less than 0.5%; Built in micro printer and RS232 data interface, supporting real-time output of test reports.

At the application scenario level, the Blowe hardness tester is widely used in aerospace, automotive manufacturing, mold processing and other fields due to its multifunctionality. For example, when testing the hardness of the nitriding layer, the Vickers method (HV0.3) can be used to measure the hardness of the thin layer first, and then switched to the Rockwell method (HRC) to detect the hardness of the substrate; When analyzing the quality of castings, the Brinell method (HBW) can be used to evaluate the overall hardness uniformity and avoid the influence of tissue non-uniformity on the results.