The manufacturing of aluminum alloy processing molds is one of the key factors determining the quality and service life of aluminum profiles. Because aluminum extrusion tooling has a series of characteristics, there are high requirements for the molding technology of aluminum profile molds:
(1) During the extrusion process, aluminum alloy processing molds need to withstand the effects of high temperature, high pressure, and high friction. Therefore, high-strength heat-resistant alloy steel is required as the material. However, the processes of smelting, casting, forging, heat treatment, electrical machining, machining and surface treatment of such steels are very complicated. Therefore, manufacturers of aluminum alloy processing molds must have high-quality production equipment and mature production skills.
(2) In order to improve the service life of the aluminum alloy processing molds and ensure the surface quality of the product, the roughness of the working cavity of the mold cavity must be 0.8-0.4 μm and the roughness of the mold plane must be less than 1.6 μm during the production process. Therefore, a special polishing process and polishing equipment are required when molding.
(3) The development direction of extruded products is high, precise, and sharp, so the wall thickness requirements of profiles and pipes are reduced to about 0.5mm, and the tolerances of extruded aluminum products are required to reach ± 0.05mm. In order to extrude such ultra-high-precision products, the manufacturing precision of the mold is required to be 0.01mm, which cannot be manufactured at all using traditional processes. Therefore, it is necessary to use high-precision manufacturing equipment and mature production techniques. Common high-precision equipment includes: CNC lathes, CNC machining centers, and slow-wire processing.
(4) The cross section of aluminum profiles is very complicated, especially ultra-high-precision thin-wall hollow aluminum profiles and porous hollow-wall aluminum profiles. The processing of this type of mold requires the use of a special extrusion mold structure. Often, multiple shaped cavities are provided on the same mold at the same time. The thickness of each section changes dramatically, the relevant dimensions are complex, and the arc corners are many.
(5) There are many varieties of aluminum processing products, small batches, frequent mold changes, and strong adaptability of molds. Therefore, it is extremely important to improve the production efficiency of mold making and shorten the mold making cycle. Therefore, manufacturers are required to quickly change the mold making process, to accurately produce qualified molds according to drawings, and to minimize the workload of mold repair.
(6) There are many types of extrusion tools, complex structures, and high assembly accuracy requirements. In addition to special processing methods and special equipment, special tooling and tools and special heat treatment methods are required.
(7) In order to improve the quality and service life of the mold, it is necessary to use the best heat treatment process and surface strengthening treatment process to obtain moderate mold hardness and high surface quality. This is particularly important for difficult-to-extruded products and molds with special structures.
In summary, the processing technology of aluminum extrusion die is different from the general mechanical manufacturing technology, but a special technology with great difficulty and wide coverage. In order to manufacture high-quality and long-life molds, Shenzhen ruiyi weiye model technology co., LTD. is equipped with new production equipment and uses high-quality mold materials for processing and production. In addition, it also has the skills to formulate reasonable cold working technology, electrical processing technology, heat treatment technology and surface treatment technology.