Chaoyang blog

April 2025 | Tokyo, Japan We’re excited to announce our participation in INTERMOLD 2025, Asia’s premier exhibition for mold technology and precision manufacturing. We look forward to engaging with global industry leaders and showcasing our expertise in high-precision stamping dies through collaborative discussions. This event aligns with our strategic focus on addressing Japan’s growing demand for advanced solutions in automotive electronics, micro-components, and ultra-thin material stamping. Visitors to the exhibition can learn about our latest innovations in energy-efficient die manufacturing and multi-stage forming systems designed to meet stringent quality standards in high-volume production. Stay tuned for updates on our virtual presentations and downloadable technical resources during the event. We invite partners and clients to connect with us remotely to explore how our precision tooling solutions can optimize your manufacturing processes.

November 2024 | Hannover, Germany   We proudly participated in Euroblech 2024, the world’s leading trade fair for sheet metal working technology, held in Hannover, Germany. As an exhibitor, we showcased our latest advancements in precision stamping die solutions, including high-speed progressive dies, multi-stage forming technologies, and AI-driven quality control systems. The event provided an exceptional platform to connect with global industry leaders, share expertise in precision tooling, and explore emerging trends in the automotive, electronics, and industrial manufacturing sectors. Our team engaged with clients across Europe and established promising partnerships, reinforcing our commitment to delivering cutting-edge, customized die solutions for complex manufacturing challenges.

The effect will be better if precision equipment is used for processing. How can this be said? First, the processing effect is much faster, and then the processing power is much faster. In addition, smart devices are constantly increasing, and automation is becoming more and more obvious. Therefore, the requirements for skills in CNC gong processing and milling machine processing are getting higher and higher. CNC gong processing is to process products, use computers with digital control systems, and set up more precise processing and production. Compared with traditional mechanical processing, the power or quality of modern CNC gong processing is better than traditional manual prototypes. With the continuous development of computer technology, processing equipment can process more parts at the same time. CNC equipment now has a great integration advantage than before and has become the mainstream processing method now. The advantage of CNC prototype is that it can accurately reflect the information expressed in the drawing, and the surface quality of CNC prototype is high, especially after the surface spraying and silk screen printing are completed, it is even more dazzling than the products produced after the mold is opened. Therefore, it is not unreasonable that more and more people choose CNC prototype processing and production. 1. The precision and surface roughness of CNC prototype parts: If the tolerance requirement is 0.05mm, the requirements for both processing equipment and prototype masters are relatively high, and the cost will be much higher; 2. If the material of the CNC prototype parts is difficult to process, such as stainless steel, the material hardness is high, and tungsten steel hardened tools are required, and the CNC gong needs to be made by Taiwan or Japanese machines. Of course, the cost will be higher than that of general materials. 3. The structure and size of CNC prototype parts: If the product structure is messy, the processing cost will be much higher; if the overall size of the product is large or the appearance is a curved surface, the processing cost will also increase a lot.

Molds are basic process equipment with large usage and wide influence in the manufacturing industry. They are known as the “mother of industry” and “crown industry” and are high-tech intensive industries. Stamping die-a special process equipment that processes materials (metal or non-metal) into parts (or semi-finished products) in cold stamping is called cold stamping die (commonly known as cold stamping die). Stamping-is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the required parts. Stamping dies are indispensable process equipment for stamping production and are technology-intensive products. The quality, production efficiency and production cost of stamping parts are directly related to mold design and manufacturing. The level of mold design and manufacturing technology is one of the important indicators of a country’s product manufacturing level, and largely determines the quality, efficiency and new product development capabilities of the product. At present, multi-station progressive dies with step accuracy and forming accuracy of about 2μm can be produced. Small precision hardware continuous molds belong to high-end molds in the mold industry, with the characteristics of complex structure, high precision of parts processing, fast stamping speed and long service life. Small hardware high-speed continuous stamping molds are widely used in the electronics industry, and are also the most important tools for developing and producing structural parts of emerging products such as mobile phones and other mobile communication terminals. In the “Eleventh Five-Year Plan” of the mold industry, precision stamping molds, especially small precision hardware high-speed continuous stamping molds closely related to the electronic information industry, are listed as development priorities. To produce high-precision and high-stability stamping parts, it is necessary to improve the technical level of stamping molds. With the development of microelectronics technology, the integration of consumer terminals such as mobile phones and digital products is getting higher and higher, while their size and weight are decreasing significantly, requiring the various components inside them to be smaller and smaller. For example, the connectors supporting mobile phones and digital products are also developing towards ultra-miniaturization and thinness. The lead spacing of the connector has been reduced to 0.5mm, 0.4mm, and 0.3mm, which also promotes the development of precision mold technology. (1) Vigorously cultivate talents in mold design and processing; (2) Vigorously improve the level of domestic mold processing equipment; (3) Vigorously improve the quality of domestic mold materials; (4) Support domestic enterprises with good mold foundation, and gradually produce a group of leading mold enterprises close to international standards.

With the development of the domestic hardware stamping parts industry, competition from various provinces has become increasingly fierce. Disorderly competition in the hardware stamping parts industry has begun to appear, and the disadvantages of low cost, low product structure and low technical content of hardware have become increasingly apparent. At present, from a general point of view, my country can only be called a major producer of hardware stamping parts processing molds, but not a strong producer. There is still a gap of 10 to 15 years between its products and those of developed countries. At present, it is still dominated by medium and low-end products. In recent years, my country’s mold industry will continue to grow rapidly while showing the following characteristics: products continue to develop in the direction of larger, more precise, complex and economical, the technical content will continue to increase, the manufacturing cycle will continue to shorten, and the production of hardware stamping parts processing molds will continue to develop in the direction of informatization, digitization, refinement, high speed and automation. Enterprises will further enhance their comprehensive strength and core competitiveness in all aspects. The hardness test of metal stamping parts adopts Rockwell hardness tester. Small stamping parts with complex shapes can be used to test the surface that is difficult to test on ordinary desktop Rockwell hardness tester. Stamping parts processing includes punching, bending, drawing, forming, finishing and other processes. The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal strip materials, such as carbon plate, alloy steel plate, spring steel plate, galvanized plate, tin plate, stainless steel plate, copper and copper alloy plate, aluminum and aluminum alloy plate, etc. Portable surface Rockwell hardness tester is very suitable for testing the hardness of these stamping parts. Alloy stamping parts are the most commonly used parts in metal processing and mechanical manufacturing. Stamping parts processing is a processing method that uses molds to separate or form metal strips. Its application range is very wide. The main purpose of hardness testing of stamping materials is to determine whether the annealing degree of the purchased metal sheet is suitable for the subsequent stamping processing. Different types of stamping processing require steels of different hardness levels. Aluminum alloy plates used for stamping processing can be tested with a Webster hardness tester. When the material thickness is greater than 13mm, a Barcol hardness tester can be used. Pure Lu plates or low-hardness aluminum alloy plates should use a Barcol hardness tester. In the stamping industry, stampings are sometimes also called sheet forming, but there is a slight difference. The so-called sheet forming refers to the use of sheets, thin-walled tubes, thin-shaped materials, etc. as raw materials. The forming method of plastic processing is collectively referred to as sheet forming. At this time, the deformation in the direction of the thick plate is generally not considered.

The processing procedures of the main working parts of precision metal stamping dies, namely the convex and concave dies, do not have high technical requirements for operation and can form more complex cavities at one time. In recent years, Switzerland, Japan and other countries have conducted in-depth research and major improvements on electrical processing equipment, and have manufactured fully functional high-precision NC and CNC wire cutting machines with processing accuracy of ±0.005~ 0.001mm, or even smaller. The processing surface roughness Ra value can reach 0.4μm. The precision metal stamping dies produced by Jingzhong Mould have a blanking size accurate to +/-0.002, and the bending size is within +/-0.08mm. The first step of metal stamping processing dies is to cut the material. At the very least, the blank must be cut or sawed off from the raw material of the die steel, and then it is rough processing. The surface and size of the newly cut blank are relatively poor, so it needs to be put on a grinder for rough grinding. At this time, it belongs to rough processing, so the size requirements are not high, and generally a tolerance of 50 wires is enough. After rough processing, heat treatment is required. Generally, heat treatment is processed by a special heat treatment plant. There is not much to introduce about this. After heat treatment, fine processing is required. Generally, it is first fine-grinded on a grinder. At this time, the size requirements are more stringent. Generally, the accuracy should be around 0.01. Of course, this accuracy is not absolute. The specific accuracy requirements should also refer to the complexity and precision of the metal stamping parts that the metal stamping mold needs to process. After the grinding machine is completed, the previous design drawings are installed for processing. Generally, the wire holes are threaded first, and then the required size and shape are cut out according to the drawings, and then the milling machine, CNC, etc. are used as appropriate. This specific also depends on the complexity of the metal stamping parts.