The hottest star arc walking with the times

Star arc coating technology (Suzhou Industrial Park) Co., Ltd. is a wholly foreign-owned enterprise adopting German technology. The company is mainly engaged in the R & D, design and manufacturing of physical vapor deposition equipment, and provides a full range of industrial coating services. The company formally established an equipment manufacturing base and a coating center in Suzhou Industrial Park, China, in August 2006, committed to promoting the development of coating technology in China

at present, the company provides three series of standard coating equipment, which are respectively used to prepare diamond-like carbon coatings, high-end hydrogen free diamond-like carbon coatings and conventional hard coatings. At the same time, the company's complete coating center provides six series of coating services for the market, covering applications in various fields. The company has perfect technical research and development strength, and can design, manufacture and debug special coating equipment and proprietary coatings. Although it has been operating in the Chinese market for only three years, star arc has successfully helped customers solve many technical bottlenecks, in which customer technology has been improved, costs have been significantly reduced, and a perfect win-win situation has been achieved. Some successful cases are listed here to discuss with industry technicians

cromastar coating is used in the metal forming industry. When the metal material contacts with the mold to produce plasticity, there is a force friction between them that hinders the metal flow. The existence of friction leads to abrasive wear, adhesive wear and various forms of surface damage. Cromastar coating is a composite coating prepared by star arc Jupiter coating equipment on the basis of traditional CrN (chromium nitride) coating. The coating forms a protective layer with a Vickers hardness of 2500 of 3-6 microns on the mold surface, and the coating has excellent lubricity and low friction coefficient (0.2). Let's analyze the mechanism:

1) the existence of friction will hinder the metal flow, and the blocked metal particles will lead to the deformation of the mold in the stress direction, resulting in the actual effect of the mold. With the help of cromastar coating, it can effectively reduce the friction and avoid the deformation effect of the mold

2) the existence of friction needs to increase the deformation energy of metal materials, and the consumption of this part of energy is useless. Cromastar coating can help reduce this part of energy consumption by up to 30%

3) the existence of friction increases the deformation resistance of metal, resulting in the increase of local temperature of the mold, which makes the mold backfire locally, and the strength and hardness decrease in frequent work. In the actual production process, the mold forms a vicious cycle, the surface condition of the mold continues to deteriorate, and the friction increases accordingly. Cromastar coating with high hardness and extremely low friction coefficient can effectively slow down the damage of the mold. The actual performance is that cromastar coating can help improve the service life by 3-6 times

4) due to the existence of residual stress and the deterioration of the surface condition of the die, the understanding of the steel structure is insufficient, and the machined parts are unqualified due to the surface condition. In serious cases, the incoming and outgoing material organization will be uniform, and the mechanical properties will be reduced. Production units have to speed up the frequency of mold replacement and renovation

through reasonable analysis, it can be seen that cromastar coating can help metal forming production reduce power consumption and reduce the inefficiency caused by replacing and renovating molds. In addition, the reprocessability of the coating, that is, repeated coating - recoating - coating without causing damage to the substrate, can greatly reduce the use cost of the mold

dlc coating plays a very important role in improving microcirculation and promoting metabolism of cutting tools. The application of

dlc coating is a coating containing diamond components in the microstructure. Star arc DLC coating is characterized by high hardness (hv2500-hv3000), low surface friction coefficient (0.06-0.1), and extremely low affinity with materials. The thermal stability of DLC coating is 350oC. Due to the unique brittleness of carbon fiber, the use of DLC coating is very targeted in the processing of non-ferrous metals, acrylic materials and graphite materials

although the cutting resistance of aluminum alloy materials, especially high silicon aluminum alloy materials, is far less than that of steel, because the affinity with materials is far greater than that of steel, the tool is very easy to produce chip accretion tumor in the processing process, resulting in tool edge collapse, which is very difficult to process. When the tool surface is coated with DLC coating, the performance of the tool surface is completely changed, the chip buildup is not easy to occur, and the tool life can be doubled. At the same time, with appropriate machining parameters and adjusting the concentration of cutting fluid, DLC coated tools can improve the surface quality of machined parts and the phenomenon of size out of tolerance

due to its high hardness and easy chemical reaction between cutting tools and conventional coatings, high-efficiency processing of graphite materials has always been the technical bottleneck of the industry. The DLC coating developed by star arc has high hardness because the diamond content in its film structure is as high as 80%. Compared with conventional coatings (such as titanium nitride aluminide), the surface friction coefficient of DLC coating is extremely low. In the actual graphite processing process, the service life of DLC coated micro tools (diameter less than 10mm) can be increased by up to four times. At the same time, with appropriate tool chip removal design and the change of processing environment, DLC coated tools can meet different graphite processing requirements

for the wide application of PVD (physical vapor deposition) technology, the author's introduction is only a spot from time to time. The rapid technological development will bring more technical problems to star arc coating. In overcoming these problems, star arc and its partners will be at the front end of the manufacturing industry. (end)