Reliable hardness testing machine series for small areas

Hardness is a very important indicator of the mechanical properties of materials. Like strength, they are actually considering the relationship between the force and deformation of the material. There are many methods that can be used to test hardness, and the more commonly used ones are Brinell, Rockwell, Vickers, Leeb test methods, etc. Among them, Brinell and Rockwell test forces are large, the indentation is large, and the damage to the surface of the sample is large, while Vickers uses optical methods for measurement, which requires very professional technicians to operate, and cannot directly test large workpieces; while the ultrasonic hardness tester uses the ultrasonic contact impedance method to compare and measure the samples, which has the advantages of high accuracy, fast speed, portability, and easy operation.Sinowon ultrasonic hardness tester is based on the principle of ultrasonic contact impedance measurement, also known as ultrasonic contact impedance method. Under uniform contact pressure, the resonant frequency of the sensor rod changes with the hardness of the test piece. The sensor rod in the probe is fixed to a large mass rigid body at one end and inlaid with diamonds at the other end. When the pressure head is pressed onto the workpiece, under the action of a fixed load, for workpieces with the same elastic modulus, the lower the hardness, the larger the contact area between the pressure head and the workpiece surface, and thus the larger the indentation size of the pressure head end of the damping sensor rod, so the smaller the vibration amplitude of this end, the higher the resonant frequency, so the hardness of the workpiece can be determined by the change of the resonant frequency. It is mainly used to measure the metal Rockwell hardness (HRC), Vickers hardness (HV), Brinell hardness (HB), and has a storage function. It is a hardness tester that does not damage the workpiece surface.Sinowon ultrasonic hardness tester can measure the hardness of flange edge and gear root stamping parts, molds, thin plates, surface hardened teeth and gear grooves, and taper parts; as well as the hardness of shafts and thin-walled pipes and containers; the hardness of wheels and turbine rotors; the hardness of drill bit blades; the hardness of welding parts; and can cover the hardness measurement of most ferrous metals, non-ferrous metals and their alloys in industrial production.

In modern industrial production and scientific research, the measurement of material hardness is an important link. Traditional hardness testing methods such as indentation method often cause damage to the material, but the emergence of ultrasonic hardness tester overcomes this shortcoming. It uses the relationship between the propagation speed of ultrasonic waves in the material and the hardness of the material to achieve non-destructive testing of the hardness of the material.The working principle of ultrasonic hardness tester is based on the difference in the propagation speed of ultrasonic waves in different media. When ultrasonic waves pass through an object, the wave speed is affected by the elastic modulus and density of the material. Generally speaking, the higher the hardness of the material, the faster the ultrasonic wave propagates in it. It measures the propagation time of ultrasonic waves in the material, combined with the known sound speed and density of the material, and can calculate the hardness value of the material.This measurement method has many advantages. First, it is non-destructive and can be tested without damaging or affecting the performance of the material, which is especially important for finished product inspection or high-value parts. Second, it has a fast test speed and is easy to operate, which is suitable for rapid on-site testing. In addition, it can also realize on-site hardness testing of large components or structural parts, which is difficult for traditional hardness testers to do.With the development of science and technology, the design and function of ultrasonic hardness testers are also constantly improving. Modern ultrasonic hardness testers integrate microprocessors and advanced data processing algorithms to improve the accuracy and repeatability of tests. Some devices are also equipped with functions such as digital display, data storage and wireless communication, making data recording and analysis more convenient.Looking to the future, with the advancement of materials science and ultrasonic technology, its performance will be further improved, and its application range in the field of hardness testing will continue to expand. We look forward to this high-precision and high-efficiency non-destructive testing technology to bring more convenience and value to industry and scientific research.

Sinowon ultrasonic hardness testers are widely used in the hardness testing of automotive parts. These parts include but are not limited to engine pistons, crankshafts, cylinders, brake discs, gears, fasteners, and bearings. Through hardness testing, it can be ensured that these parts have sufficient wear resistance, durability, and reliability, thereby improving the overall performance and safety of the car. For example, the hardness tester can detect whether the hardness of key components such as crankshafts and pistons meets the design requirements, thereby preventing early wear or breakage caused by insufficient material hardness.In terms of quality control and production monitoring, hardness testers also play an irreplaceable role. By regularly testing the hardness of automotive parts, companies can promptly discover quality problems of materials and prevent the production of defective products. In addition, hardness testers can also be used for rapid screening and classification in the production process to improve production efficiency and product quality. This is an important means for automobile manufacturers to ensure that products meet quality standards and customer requirements.Hardness testers also play an important role in automotive process optimization and material research and development. During the process, the hardness of the material may change after various treatments (such as heat treatment, processing, welding, etc.). By measuring and comparing the hardness of materials before and after processing, the impact of the process on material properties can be evaluated, thereby optimizing process parameters and improving product quality and performance. At the same time, when developing new automotive materials, hardness testers are also one of the important tools for evaluating the performance of materials.The application of ultrasonic hardness testers in the automotive industry is multi-faceted and multi-level. It not only helps to ensure the quality and performance of automotive parts, but also promotes the optimization of automotive manufacturing processes and the development of new materials. With the continuous development of the automotive industry, the application prospects of ultrasonic hardness testers will be broader.

Product introduction: The SU-300 host and probe adopt streamlined design, anti-interference aluminum alloy shell, high-strength scratch-resistant glass panel, high-speed computing MPU system, 3.2 "high-brightness color LCD screen, wireless Bluetooth data printing and transmission technology, and the human-computer interaction interface is clear at a glance. The SU-300M electric ultrasonic hardness tester adopts a building block template design, and is equipped with electric ultrasonic probes MP-300, MP-500, MP-800, MP-1000. To measure the hardness of electroplating layers of rollers, screws, wind power and other samples with chrome plating, copper plating, carburizing and nitriding layers.Product features:High precision: the test accuracy can reach HV: ±3% HV, HR: ±1.5HR, HB: ±3%HB;Small indentation: it cannot be directly observed by naked eyes and needs to be found with a high-power metallographic microscope;Fast speed: the test results are output within 6 seconds, which is 20 times more efficient than the microhardness tester;Large screen: the current measurement value, maximum value, minimum value, average value and hardness conversion value are directly displayed on the 3.2″ color screen;Easy to operate: Just one click to quickly get the test results;Wireless printing: Supports wireless Bluetooth printing and data transmissionThe aerospace field has extremely high requirements for material performance. The hardness tester can test the hardness of key components such as aircraft and spacecraft to ensure their stability and safety in extreme environments.In metal processing, Sinowon ultrasonic hardness tester can help evaluate the hardness of materials, thereby guiding the processing process and improving the process. In the chemical industry, the hardness tester can test the corrosion resistance of materials and ensure the quality of products. In the aerospace field, Sinowon ultrasonic hardness tester is widely used to evaluate the performance of aviation materials and ensure that the hardness of aircraft accessories meets the standards.