Granite precision components testing standards
Dimensional accuracy standard
According to relevant industry norms, the key dimensional tolerances of granite precision components need to be controlled within a very small range. Taking the common granite measuring platform as an example, its length and width tolerance is between ±0.05mm and ±0.2mm, and the specific value depends on the size of the component and the accuracy requirements of the application scenario. For example, in the platform for high-precision optical lens grinding, the dimensional tolerance may be controlled at ±0.05mm, while the dimensional tolerance of the general machining inspection platform can be relaxed to ±0.2mm. For the internal dimensions such as aperture and slot width, tolerance accuracy is also strict, such as the mounting hole on the granite base used to install the precision sensor, the aperture tolerance should be controlled at ±0.02mm to ensure the accuracy and stability of the sensor installation.
Flatness standard
Flatness is an important index of granite precision components. According to the national standard/German standard, the flatness tolerance of different precision grades of granite platform has been clearly specified. The flatness tolerance of the platform for class 000 is calculated as 1×(1 + d/1000)μm (d is the diagonal length, unit mm), 2×(1 + d/1000)μm for class 00, 4×(1 + d/1000)μm for class 0, and 8×(1 + d/1000)μm for class 1. For example, a Class 00 granite platform with a diagonal of 1000mm has a flatness tolerance of 2×(1 + 1000/1000)μm = 4μm. In practical applications, such as the lithography platform in the manufacturing process of electronic chips, it is usually required to meet the 000 or 00 level flatness standard to ensure the accuracy of the light propagation path in the chip lithography process and avoid the chip pattern distortion caused by the platform flatness error.
Surface roughness standard
The surface roughness of granite precision components directly affects the matching accuracy and performance with other components. Under normal circumstances, the surface roughness Ra of the granite platform used for optical components should reach 0.1μm-0.4μm to ensure that the optical components can maintain good optical performance after installation and reduce the light scattering caused by uneven surfaces. For the ordinary granite platform used for machining testing, the surface roughness Ra can be relaxed to 0.8μm-1.6μm. The surface roughness is usually detected by using professional equipment such as profiler, which determines whether the surface roughness value meets the standard by measuring the arithmetic mean deviation of the surface microscopic profile.
Internal defect detection standards
In order to ensure the internal quality of granite precision components, it is necessary to strictly detect their internal defects. When using ultrasonic inspection, according to the relevant standards, when it is found that there are holes, cracks and other defects greater than a certain size (such as diameter greater than 2mm), the component is judged to be unqualified. In X-ray inspection, if the X-ray image shows continuous internal defects that affect the structural strength of the component, such as linear defects with a length of more than 10mm or intensive defects with an area of more than 50mm², the component also does not meet the quality standard. Through the strict implementation of these standards, it can effectively avoid serious problems such as fracture of components caused by internal defects during use, and ensure the safety of equipment operation and the stability of product quality.
Industrial inspection solution architecture
High precision measurement equipment integration
In order to overcome the granite precision component detection problem, it is necessary to introduce advanced measuring equipment. The laser interferometer has extremely high accuracy in length and Angle measurement, and can accurately measure the key dimensions of granite components, and its measurement accuracy can be up to nanometers, which can effectively meet the detection requirements of high-precision dimensional tolerances. At the same time, the electronic level can be used to quickly and accurately measure the flatness of the platform granite components, through multi-point measurement and combined with professional algorithms, can draw an accurate flatness profile, the detection accuracy of up to 0.001mm/m. In addition, the 3D optical scanner can quickly scan the complex surface of the granite component to generate a complete three-dimensional model, which can accurately detect the shape deviation by comparing with the design model, providing comprehensive data support for product quality assessment.
Application of nondestructive testing technology
In view of the potential threat of internal granite defects to component performance, non-destructive testing is essential. Ultrasonic flaw detector can emit high-frequency ultrasound, when the sound wave encounters the cracks, holes and other defects inside granite, it will reflect and scatter, by analyzing the reflected wave signal, it can accurately judge the location, size and shape of the defect. For the detection of small defects, X-ray flaw detection technology is more advantageous, it can penetrate the granite material to form an image of the internal structure, clearly showing the subtle defects that are difficult to detect by the naked eye, to ensure that the internal quality of the component is reliable.
Intelligent detection software system
A powerful intelligent detection software system is the core hub of the whole solution. The system can summarize, analyze and process the data collected by all kinds of testing equipment in real time. Using artificial intelligence algorithms, the software can automatically identify data features and determine whether granite components meet quality standards, greatly improving detection efficiency and accuracy. For example, by training large amounts of inspection data with deep learning models, the software can quickly and accurately identify the type and severity of surface defects, avoiding possible misjudgments caused by manual interpretation. At the same time, the software system can also generate a detailed test report, record the test data and results of each component, which is convenient for enterprises to conduct quality traceability and management.
Benefits of ZHHIMG in inspection solutions
As an industry leader, ZHHIMG has accumulated rich experience in the field of granite precision component inspection. The company has a professional R & D team, constantly committed to the innovation and optimization of testing technology, according to the special needs of customers customized testing solutions. ZHHIMG has introduced international advanced testing equipment and established a strict quality control system to ensure that every test can reach the top level of the industry. In terms of services, the company provides one-stop services from testing scheme design, equipment installation and commissioning to personnel training to ensure that customers can smoothly apply testing solutions and improve product quality control capabilities.
Post time: Mar-24-2025