How to ensure the accuracy and quality of the aluminum frame?
In order to ensure the accuracy and quality of mobile phone LCD aluminum frames, manufacturers usually adopt a series of strict control measures and advanced manufacturing processes. Here are some key steps and techniques to ensure high precision and quality of aluminum frames:
1. Material selection and pretreatment
High-quality raw materials: Use high-quality aluminum alloy materials (such as 6063 or 6061), which have good mechanical properties, workability and corrosion resistance.
Strict inspection: chemical composition analysis and physical properties test (such as hardness, tensile strength, etc.) of raw materials before use to ensure that they meet the design requirements.
2. Precision machining
a. CNC machining
High-precision equipment: Machining is carried out using high-precision CNC machines that are capable of achieving micron level accuracy.
Multi-axis linkage: CNC machines with five or more axes can complete complex three-dimensional shape machining in a single clamping, reducing cumulative errors.
Tool selection: Select the right tool according to different processing needs to improve processing efficiency and surface finish.
b. Process monitoring
Real-time monitoring: The use of sensors and monitoring systems in real-time monitoring of the process of temperature, vibration, cutting force and other parameters, timely adjustment of processing parameters to prevent deviations.
Automatic calibration: Regular automatic calibration of CNC machine tools to ensure that the equipment is in the best working condition.
3. Surface treatment
Anodizing: Forming a uniform and dense oxide film through anodizing treatment, which can not only improve corrosion resistance, but also enhance surface hardness and wear resistance.
Sandblasting: The use of sandblasting technology to achieve a matte effect on the surface, while removing small surface defects, improve subsequent coating adhesion.
Plating or coating: For aluminum frames with special requirements, plating or other coating treatment can be carried out to increase functionality or aesthetics.
4. Quality inspection
a. Size detection
Coordinate measuring instrument (CMM) : The use of high-precision coordinate measuring instrument to detect the size of the processed aluminum frame to ensure that its key dimensions meet the design requirements.
Laser scanner: Quickly obtain 3D data of the workpiece through laser scanning technology for full-size comparative analysis.
b. Check appearance
Manual inspection: The experienced quality inspection personnel carefully inspect the surface of the workpiece to find scratches, pits, burrs and other defects.
Automated visual inspection: Using high-resolution cameras and image processing software, surface defects are automatically identified and recorded.
c. Physical performance test
Hardness test: The surface hardness of the aluminum frame is measured by Rockwell hardness tester or Vickers hardness tester to ensure that it meets the design standards.
Tensile strength test: Tensile test is carried out on the sample to verify whether its tensile strength meets the requirements.
Corrosion resistance test: salt spray test and other methods to evaluate the corrosion resistance of aluminum frame.
5. Environmental control
Constant temperature and humidity workshop: keep the temperature and humidity in the production workshop stable, reduce the size change caused by environmental changes.
Clean production: strictly control the dust and particles in the workshop to avoid polluting the processing surface and affecting the quality of the product.
6. Standardized process and continuous improvement
Standardized Operating Instructions (Sops) : Develop detailed processing and inspection operating procedures to ensure that there are clear operating guidelines for each step.
Continuous improvement mechanism: Establish a feedback mechanism, regularly collect the problems encountered in the production process and improvement suggestions, and constantly optimize the production process.
7. Supply chain management
Supplier audit: Regular audit of raw material suppliers to ensure that the quality of materials provided by them is stable and reliable.
Batch traceability: Establish detailed production records and quality files for each batch of products, so as to trace the root cause of problems and take corrective actions.
Through the above measures, the accuracy and quality of the mobile phone LCD aluminum frame can be effectively guaranteed, and the final product can meet the design requirements and have good performance.
