NEWS - Industry news - The advanced appliance mold manufacturing technology
The advanced appliance mold manufacturing technology
Promulgator:SENOTECT Date:2013/4/16 Hits:6890
The increasingly large home appliances, to improve production efficiency and the development of "a multi-cavity mold" has resulted in increasingly large appliances mold, at the same time, the rapid development of electronic home appliances also brought parts of miniaturization and precision, some The precision mold tolerances required in the 1μm or less. Active use advanced equipment to improve the level of mold manufacturing, in order to achieve significant economic benefits.
The widespread adoption of high-speed cutting of high speed machining technology is generally used for large home appliance cover mold surface machining accuracy is up to 0.01mm. Only slightly the mold surface finishing of high-speed milling, polishing can be used to save a lot of grinding, polishing time. High-speed machining significantly shorten the molding cycle to improve the competitiveness of the product market. Mold companies in Europe and America with high-speed CNC milling, five-axis most revolutions 15,000 30000r/min. In addition, European and American the mold companies also attaches great importance to the renewal of equipment. Equipment depreciation period is usually 4 to 5 years. The increase in high-speed CNC milling machine, that is one of the priorities of the mold business investment in equipment.
The high-speed scanner, and mold scan system high-speed scanner and mold scan system provides many functions required scanning to processing the desired model from the model or in kind, greatly reducing the mold development and manufacturing cycle. Some quick scan system can be quickly installed on existing CNC milling machining center, fast data acquisition, and automatically generate various CNC machining program, the CAD data of different formats for mold manufacturing, reverse engineering . " Mold scanning system has been successfully applied in Europe and the United States home appliances and other industries. The equipment in this regard include: British Renishaws high-speed scanner (CYCLON SERIES2), the scanner can be laser probe and contact probe complementary laser scanning accuracy of 0.05 mm contact probe scanning accuracy of 0.02mm.
Mold scanners greatly shorten the development cycle of the mold
Hot runner, gas-assisted mold further development of many plastic mold plastic mold factory production more than 80% of the hot runner technology abroad, the effect is very obvious. Many enterprises in Europe and the United States has been able to successfully use the gas-assisted technology in the TV cabinet, washing machine shell, as well as some thick-walled plastic parts mold. Gas-assisted injection molding with a low injection pressure, Warpage small, surface quality, and ease of forming the wall thickness differences larger products, etc., under the premise of ensuring product quality and dramatically reduces costs.
Rapid prototyping and rapid tooling technology combined with the increasingly fierce competition in the home appliance market replacement products continues to accelerate, the rapid prototyping technology and rapid tooling technology combined used in mold making, namely the use of rapid prototyping technology to produce the prototype of the product parts, again based on prototype quickly manufacture the mold. Application of RP, RT technology from mold design to manufacturing to complete only about 1/3 and 1/4 of the traditional processing method and cost.
Many European and American appliances mold manufacturers take advantage of the rapid prototype casting silicone rubber molds and plastic parts for a small amount of reproduction, is very suitable for the trial of the product. Some countries in Europe and the United States also made of aluminum injection mold, reduce cycle 25 to 30%. Greatly reduce the weight of the mold, polishing time in half. West Germany developed a reinforced plastic used to make plastic mold cavity and core, the life expectancy of more than one hundred thousand.
EuroMold, rapid prototyping and rapid tooling technology occupies a very prominent position, SLA, SLS, FDM and LOM types of rapid prototyping equipment, there are organizations and companies specializing in prototyping and manufacturing services.
Quality mold material and advanced surface treatment technology, the trend of the development of Europe and the United States die steel is low carbon tool steel, alloy tool steel, alloy tool steel, one after another series of new mold material, the mold standard steel alloying degree is rising. Such as the United States, all 15 kinds of hot work die steel alloying elements is greater than 5%, and 10 kinds of alloying elements is greater than 10%, accounts for 80%. Abroad have developed a new type of hot work die steel include: (1) high hardenability oversize forging die steel, such as the international standard ISO 40NiCrMoV7 French NF standard 40NCD16 etc.; (2) strong fever die steel, such as The H10A, USA, as well as special steel company 5Mn15Ni5Cr8Mo2V2 steel, etc.; (3) high-temperature hot work die steel, such as the United States T2M T2C.
In order to meet the special requirements of cold work die, the countries to develop a new type of cold work die steel are: (1) high toughness, high wear resistance mold steel, such as vanadium alloy steel VascoDie (8Cr8Mo2Vsi) steel, etc.; (2) alloy air quenching micro deformation of steel, such as ASTM standard steel No. A14, A16, etc.; (3) powder metallurgy cold work die steel, such as U.S. CPM10V, Germany 320CrVMo13.5.
Trends in foreign new plastic mold steel mainly the following aspects: (1) cutting, polishing and good plastic mold steel, such as U.S. 412, M-300, Japan YAG EAB in the United Kingdom, Sweden STAVAX- 13, etc.; (2) pre-hardened plastic mold steel, such as the American P20, 445, Japan PDS Germany MOVTREX-A (2312); (3) the overall hardened plastic mold steel, such as A2, D3 and H13 etc.; (4) corrosion-resistant plastic mold steel, such as GB ISO 110Cr-Mo17 Sweden ASSAB 4Cr13 etc..
The main trend of the mold surface treatment: permeation by the infiltration of a single element to the multi-element composite diffusion development, CVD, PVD, PCVD, ions penetrate the general diffusion, ion implantation, such as the direction of the coating can be used: TiC, TiN , TiCN, TiAlN, CrN, Cr7C3, W2C, etc., while the development of the heat treatment means by atmospheric heat treatment to the vacuum heat treatment. Laser hardening glow plasma nitriding and plating (brush plating) anti-corrosion strengthen technology are gaining in importance.
In order to strengthen the competitiveness of foreign mold steel production from dispersed tend to be concentrated, the number of cross-border merger of the Company. In order to better compete, these companies have built a comprehensive, state-of-the-art technology and scientific research base of the mold steel production line and die steel, the formation of several world-famous tool and die production and research center, to meet the rapid development of the mold industry.