In the era of precision in automotive manufacturing, the accuracy of component detection directly determines the safety and reliability of the entire vehicle. As the core standard for quality control in the global automotive industry, ISO/IEC 17020 imposes strict requirements on the equipment performance of testing institutions. The ZHHIMG granite measurement platform, with its outstanding stability, high precision and reliability, has become a key testing benchmark for the automotive industry to pass the ISO/IEC 17020 certification, laying a solid foundation for the quality control of the entire vehicle.
The strict standards of ISO/IEC 17020 certification
ISO/IEC 17020 "General Requirements for the Operation of All Types of Inspection Bodies" aims to ensure the impartiality, technical capabilities and management standardization of inspection bodies. In the automotive industry, this certification requires that the testing equipment must have long-term stability, the ability to resist environmental interference, and ultra-precise measurement benchmarks. For instance, the detection error of the flatness of the engine block should be controlled within ±1μm, and the repeatability accuracy of the measurement of the dimensions of the chassis components should reach ±0.5μm. Any deviation in the performance of the equipment may lead to the failure of the certification, which in turn affects the quality certification of the entire vehicle and market access.
The natural advantages of granite material lay the foundation for precision
The ZHHIMG granite measurement platform is made of high-purity natural granite, with dense and uniform mineral crystals inside. It has three core advantages:
Ultimate thermal stability: The coefficient of thermal expansion is as low as 5-7 ×10⁻⁶/℃, only half that of cast iron. Even in the complex environment of high-temperature equipment operation and frequent air conditioning starts and stops in automotive manufacturing workshops, it can still maintain dimensional stability and avoid measurement reference deviation caused by thermal deformation.
Outstanding anti-vibration performance: The unique damping characteristics can quickly absorb over 90% of external vibrations. Whether it is high-frequency vibrations generated by machine tool processing or low-frequency vibrations caused by logistics transportation, it can provide a stable environment for measurement, ensuring the accuracy and reliability of the data.
Super wear resistance: With a Mohs hardness of 6-7, even during frequent component measurement operations, the wear on the platform surface is extremely small. It can maintain an ultra-high flatness of ±0.001mm/m for a long time, reducing the frequency of equipment calibration and lowering maintenance costs.
Ultra-precision processing technology has achieved a breakthrough in accuracy
ZHHIMG adopts the world's leading processing technology and, through 12 precise procedures such as CNC grinding and polishing, elevates the flatness of the granite measuring platform to the top level in the industry. Combined with the real-time calibration of the laser interferometer, it ensures that the flatness error of each platform is controlled within ±0.5μm, and the roughness Ra value reaches 0.05μm, providing a high-precision inspection reference comparable to a mirror surface for automotive parts.
Verification of full-scenario applications in the automotive industry
In the field of engine manufacturing, the ZHHIMG granite measurement platform provides a stable benchmark for the flatness and hole diameter accuracy detection of cylinder blocks and cylinder heads, helping automakers reduce the scrap rate of key components by 30%. In the inspection of the chassis system, its stable measurement environment keeps the form and position tolerance detection errors of components such as the suspension arm and steering knuckle within ±0.3μm, effectively enhancing the overall handling performance of the vehicle. After a globally renowned automotive enterprise introduced the ZHHIMG platform, it successfully passed the ISO/IEC 17020 certification. The consistency of product quality was significantly improved, and the customer complaint rate decreased by 45%.
Quality assurance system throughout the entire life cycle
ZHHIMG has established a full-process quality control system covering raw material screening, production and manufacturing, and factory inspection. Each platform has undergone a 72-hour constant temperature and humidity test, vibration fatigue test and electromagnetic compatibility test.
Under the background of the upgrading of the automotive industry towards intelligence and electrification, the ZHHIMG granite measurement platform, with its irreplaceable advantages in accuracy and reliability, has become the core equipment for the automotive industry to pass the ISO/IEC 17020 certification. From traditional fuel vehicles to new energy vehicles, ZHHIMG continuously empowers automakers to enhance their quality control levels, injecting strong impetus into the high-quality development of the global automotive industry.
Post time: May-13-2025