Modernization process upgrade and quality process monitoring management of metal
[1] Modernization of stamping process upgrade
The manufacturing process level of chassis stamping parts in automobile production not only affects the performance and quality of the chassis, but also has a significant impact on the overall quality of the car. Therefore, in automobile production, relevant personnel should actively embrace new processes, improve the production process of chassis stamping parts, and promote the overall upgrading of automobile production processes.
1. Virtual Manufacturing of Components
For stamping production units, if the virtual manufacturing process is not properly controlled, it usually leads to unstable production of parts. Therefore, in the product design process, it is necessary to plan the material utilization rate of components and solve problems through virtual manufacturing.
2. Realize process design
With the continuous changes in the manufacturing process of automotive parts, components represented by the side panel have gradually progressed from the commonly used five or even six sequence to four or even three sequence manufacturing, which has led to the continuous development of stamping products towards digitization, digitization, high-speed and automation.
3. Diversification of processing techniques
When the cross-sectional quality and dimensional accuracy requirements of metal stamping parts are high, the punching process can be used. When the bending radius of the bent part is less than the allowable value, an additional forming process should be added after bending; When the corner radius of the stretched part is small or the dimensional accuracy requirement is high, an additional forming process needs to be added after stretching. Single process molds are used to complete metal stamping parts. Multiple stamping processes are required for cutting complex shapes. An additional leveling process can be added after the punching process.
[2] Quality process monitoring and management of stamping parts
The quality management of the stamping workshop requires strict control of process quality and in-depth implementation of "self process": implementing the "double three inspection" system, namely line inspection, sampling inspection, and patrol inspection, and mandatory inspection of intermediate and final parts.
During the production process, a part, a part during the production process, and a later part are inspected according to the "Sampling Operation Standard Book". During the production process, production line employees visually inspect the appearance of stamped parts. If any abnormalities are found, production is stopped and the team leader or quality personnel are contacted for quality confirmation.
The production line leader is responsible for inspecting the quality of stamped parts. If any abnormalities are found, production will be stopped and quality personnel will be contacted for quality confirmation. For parts that cannot meet production requirements, fill out the "Mold Maintenance Form" and have the relevant team develop corrective or preventive measures. At the end of the batch, it is necessary to indicate "last piece, inspection date, and inspector's name" on the finished product. When the quality and process of stamped parts are stable, there is no need for full inspection, and instead, sampling and line inspection are used to determine the quality. For automotive metal stamping parts; It belongs to mass production, and the specific sampling frequency needs to be determined according to the GB2828-2003 national standard sampling standard.
The quality management of the stamping workshop and the inspection of stamped parts are important links, not only controlling various points, but also involving multiple important links, such as the formulation of standard operations, the standardization of operations by inspection personnel on the basis of sufficient preparation, and the analysis of the causes and formulation of countermeasures for quality defects in order to control the quality of parts. Strictly controlling all aspects of stamping quality is necessary to steadily improve stamping quality and production efficiency. However, the purpose of stamping quality management is to control the process of stamping various factors to meet the design and product requirements of qualified stamping parts, rather than pursuing stamping parts unilaterally.
