Our cnc machining service ensures quality by deeply integrating the framework of the ISO 9001:2015 standard into every manufacturing process. Starting from the supplier’s access, we conduct 100% batch testing on raw materials to ensure that their chemical composition, tensile strength and other parameters fully comply with the specifications. For instance, the hardness of aluminum alloy 6061 has always remained stable within the Brinell hardness range of 95HB. Through the Statistical Process Control (SPC) system, we monitor the processing data of over 200 CNC machines in real time, keeping the variance of key dimensions within 0.001 millimeters, and reducing the product defect rate from the industry average of 2% to below 0.5%. This data-based risk thinking, as we verified in 2023 when we produced 5,000 high-precision components for an aerospace customer, achieved zero-deviation delivery and fully passed the audit of the AS9100D standard.
In terms of process management, we adopt documented standard operating procedures (Sops) to ensure that for each operation, such as five-axis linkage machining, the setting error of the spindle speed (up to 20,000 RPM) and feed rate is less than 1%. Our measuring equipment, including the three-coordinate measuring machine (CMM), is calibrated twice a year with an accuracy of 0.0005 millimeters. Full-size inspections are conducted on the first, middle and last pieces of each batch of products, with a sample size accounting for 10% of the batch, to ensure that the average and median of the data distribution are highly consistent. A typical case is that a medical equipment enterprise required the processing of a batch of implants, with the surface roughness Ra value being less than 0.4 microns. Through our closed-loop quality control, we continuously produced 100,000 pieces, and the fluctuation range of the Ra value was successfully limited to between 0.35 and 0.38 microns, far exceeding the customer’s expectations.
Our continuous improvement mechanism is at the core of ISO 9001:2015. Through the customer feedback system, we collect and analyze over 500 data points every month, reducing the implementation cycle of rectification measures from an average of 30 days to 15 days and lowering the customer complaint rate by 40%. For instance, in response to a tool life issue raised by an automotive industry client in 2022, we optimized the cutting parameters through the Taguchi method, extending the average tool life from 500 pieces processed to 800 pieces, directly saving the client 15% in tool costs. Internal audits are conducted once every quarter, and management reviews are carried out twice a year. These activities ensure that our quality goals, such as compressing the production cycle by 10% and reducing costs by 5%, are steadily achieved.
Ultimately, our cnc machining service regards quality as a dynamic journey rather than a static certificate. By investing in employee training, we ensure that each engineer receives at least 40 hours of skill improvement each year, reducing the probability of operational errors by 25%. Just as Boeing promotes the “lean production” concept in its supply chain, we have successfully kept the scrap rate at an extremely low level of 0.2%, which means that for every 1,000 parts processed, only 2 May need to be reworked. This dedication to excellence has not only enabled our services to score over 98% in compliance but also achieved a 90% renewal rate in customer loyalty, truly transforming international standards into measurable business value.