According to industry analysis, the global automotive m […]
According to industry analysis, the global automotive mold industry presents nine major development trends, namely: the role of simulation (CAE) of the stamping forming process is more prominent, the position of mold 3D design is consolidated, digital mold technology has become the mainstream direction, and mold processing automation is rapid. Development and high-strength steel plate stamping technology is the future development direction, new mold products will be launched in time, mold materials and surface treatment technology will be reused, scientific management and informationization are the development direction of mold enterprises, and the refined manufacturing of molds is an inevitable trend.
Plastic Auto Mould Manufacturers Taizhou Huangyan Yuantu Mould Co., Ltd.
The simulation of stamping process (CAE) is more prominent
In recent years, with the rapid development of computer software and hardware, the simulation technology (CAE) of the stamping forming process is playing an increasingly important role. In developed countries such as the United States, Japan, and Germany, CAE technology has become a necessary part of the mold design and manufacturing process. It is widely used to predict forming defects, optimize the stamping process and mold structure, improve the reliability of mold design, and reduce the trial time.
Many domestic automobile mold companies have also made significant progress in the application of CAE and achieved good results. The application of CAE technology can greatly save the cost of trial molds and shorten the development cycle of stamping molds, which has become an important means to ensure mold quality. CAE technology is gradually transforming mold design from empirical design to scientific design.
The position of mold 3D design is consolidated
The three-dimensional design of the mold is an important part of the digital mold technology and the basis for the integration of mold design, manufacturing and inspection. Companies such as Toyota and General Motors of the United States have realized the three-dimensional design of molds and achieved good application results. Some methods adopted in the 3D mold design abroad are worthy of our reference. In addition to being conducive to the realization of integrated manufacturing, the three-dimensional design of the mold has another advantage that it is convenient for interference inspection and can perform motion interference analysis, which solves a problem in the two-dimensional design.
Digital mold technology has become the mainstream direction
In recent years, the rapid development of digital mold technology is an effective way to solve many problems faced in the development of automobile molds. The so-called digital mold technology is the application of computer technology or computer-aided technology (CAX) in the mold design and manufacturing process.
Summarizing the successful experience of application of computer-aided technology by domestic and foreign automotive mold companies, digital automotive mold technology mainly includes the following aspects:
①Design for manufacturability (DFM), that is, consider and analyze manufacturability during design to ensure the success of the process.
②Auxiliary technology for mold profile design, develop intelligent profile design technology.
③CAE assists in analyzing and simulating the process of stamping forming, predicting and solving possible defects and forming problems.
④ Replace the traditional two-dimensional design with a three-dimensional mold structure design.
⑤The mold manufacturing process adopts CAPP, CAM and CAT technology.
⑥ Under the guidance of digital technology, deal with and solve the problems that arise in the process of mold trial and stamping production.
Rapid development of mold processing automation
Advanced processing technology and equipment are an important foundation for improving productivity and ensuring product quality. In advanced automobile mold companies, it is not uncommon to see CNC machine tools with dual worktables, automatic tool changers (ATC), photoelectric control systems for automatic processing, and online workpiece measurement systems. Numerical control processing has developed from simple profile processing to comprehensive processing of profile and structural surfaces, from medium and low-speed processing to high-speed processing, and the development of processing automation technology is very rapid.
High-strength steel plate stamping technology is the future development direction
High-strength steel has excellent characteristics in terms of yield ratio, strain hardening characteristics, strain distribution ability, and collision energy absorption, and the amount of use in automobiles continues to increase. At present, the high-strength steels used in automotive stampings mainly include paint hardening steel (BH steel), dual-phase steel (DP steel), and phase transformation induced plasticity steel (TRIP steel). 97% of the material in the advanced concept vehicle (ULSAB-AVC) launched by the International Ultra Light Body Project (ULSAB) is high-strength steel. The proportion of advanced high-strength steel in the vehicle material will exceed 60%, and the proportion of dual-phase steel Will account for 74% of automotive steel plates. Now, the widely used mild steel series mainly based on IF steel will be replaced by high-strength steel plate series, and high-strength low-alloy steel will be replaced by dual-phase steel and ultra-high-strength steel plate.
At present, the application of high-strength steel plates for domestic auto parts is mostly limited to structural parts and beams, and the tensile strength of the materials used is mostly below 500MPa. Therefore, quickly mastering the stamping technology of high-strength steel plates is an urgent problem for my country's auto mold industry. important question.
New mold products will be launched in due course
With the development of high efficiency and automation of automobile stamping production, the application of progressive dies in the production of automobile stamping parts will be more extensive. Complicated shape stamping parts, especially some small and medium-sized complicated stamping parts that require multiple sets of punching dies according to the traditional process, are increasingly formed by progressive dies.
Progressive die is a kind of high-tech mold product, which is technically difficult, requires high manufacturing precision, and has a long production cycle. Multi-station progressive die will be one of the most important mold products in my country.
Mold materials and surface treatment technology will be reused
The quality and performance of mold materials are important factors that affect mold quality, life and cost. In recent years, in addition to the continuous introduction of a variety of high toughness and high wear resistance cold work die steels, flame quenched cold work die steels, and powder metallurgy cold work die steels, it is worthwhile to use cast iron materials for large and medium-sized stamping dies abroad. Concerned about the development trend. Nodular cast iron has good toughness and wear resistance, and its welding performance, workability, surface hardening performance are also good, and the cost is lower than alloy cast iron, therefore, it is more used in automobile stamping dies.
Scientific management and informatization is the development direction of mold enterprises
Another important aspect of the development of automobile mold technology is the scientific management and informationization. The scientific management has enabled mold companies to continue to develop in the direction of Just-in-TimeManufacturing and LeanProduction. Enterprise management is more accurate, production efficiency is greatly improved, and ineffective institutions, links and personnel are continuously streamlined.
With the advancement of modern management technology, many advanced information management tools, including enterprise resource management system (ERP), customer relationship management (CRM), supply chain management (SCM), project management (PM), etc., are used in mold companies It is widely used.
Refined manufacturing of molds is an inevitable trend
The so-called refined manufacturing of molds refers to the development process and manufacturing results of molds, specifically: the rationalization of stamping process and mold structure design, high precision of mold processing, high reliability of mold products and technical management Tightness. Refined mold manufacturing is actually not a single technology, but a comprehensive reflection of design, processing and management technology. The realization of the refined manufacturing of molds, in addition to relying on technical excellence, must also rely on strict management to ensure.