Die casting is the pressure of metal molds on a die casting machine and is the most productive casting process. Die-casting machines are divided into two categories: hot-chamber die-casting machines and cold-chamber die-casting machines. The hot chamber die casting machine has a high degree of automation, less material loss, and higher production efficiency than the cold chamber die casting machine. The aluminum alloy die castings that are widely used today can only be produced on cold chamber die casting machines due to their high melting point. The main feature of die casting is that the molten metal fills the cavity under high pressure and high speed, and is formed and solidified under high pressure. The air in the cavity is wrapped inside the casting to form subcutaneous pores, so aluminum alloy die castings should not be heat treated, and zinc alloy die castings should not be sprayed on the surface (but can be painted). Otherwise, the internal pores of the casting will expand due to thermal expansion and cause the casting to deform or bubble when the above-mentioned treatment is performed. In addition, the mechanical cutting allowance of die castings should also be smaller, generally around 0.5mm, which can not only reduce the weight of castings, reduce the amount of cutting to reduce costs, but also avoid penetrating the surface dense layer and exposing subcutaneous pores, causing The workpiece is scrapped. Resin sand molding,Resin Coated Sand Mold Casting,Furan resin sand casting,Green sand casting Tianhui Machine Co.,Ltd , https://www.thcastings.com
The Vivid Experience Lab was established in March 2006 by NXP and Tsinghua University. The lab not only conducts academic research, but is also committed to providing commercial solutions to meet the needs of China and the global market. The lab specializes in advanced wireless communications, multimedia processing and automotive technology and applications, as well as teaching courses based on the NXP Nexperia platform, as well as outstanding student scholarship programs.
To date, laboratories have crossed important development milestones in areas such as MIMO, AVS and automotive technology. In the field of wireless communications, in order to improve the precoding technology required for MIMO in 3GPP LTE and post-3G era, the laboratory has applied for a patent, and two other patents are currently under preparation. The lab also submitted a proposal to the China Mobile Communications Forum to share insights in the field of MU-MIMO precoding vector selection. In the field of multimedia, AVS, a digital audio/video codec standard with Chinese proprietary intellectual property rights, is almost operational on the PNX1300, one of NXP's widely deployed Nexperia platform members. In the automotive sector, the laboratory has developed battery-free tire pressure monitoring (TPMS) technology and evaluated the application prospects of the technology.
In terms of local talent development, NXP has opened a Nexperia program for Tsinghua University to provide graduate students with access to Nexperia-based DSP applications, helping them prepare for employment and laying a solid foundation for future innovation. A number of graduate students have successfully completed the course and more students are studying this course for a better future. In addition, five students have received scholarships for outstanding students, which are designed to provide financial support for continuing education for outstanding students and help them improve their technical skills.
René Penningde Vries, senior vice president and chief technology officer of NXP Semiconductors, said: "As China's role in the global market changes, from manufacturing bases to innovation centers, from 'Made in China' to 'China's creation," more and more The academic institutions began to pay more attention to the cultivation of students and laid a solid foundation for improving the future innovation ability. We are very honored to join hands with Tsinghua University, one of the most prestigious universities in the country, through the vivid experience laboratory. Tsinghua University has gathered all over China. The best professors and students, the level of technology has long been outstanding. We believe that the cooperation between the two sides will help Tsinghua professors and students to further consolidate the foundation of innovation and achieve fruitful results in the next few years."
Professor Zhang Zaixing, deputy director of the Tsinghua University School Committee, said: "We are very pleased to work with NXP Semiconductors in the Live Experience Lab. NXP's extensive expertise and market insights provide a very good research platform for Tsinghua students. It is beneficial for them to combine their knowledge with the actual reality of the industry, and it is also conducive to continually stimulating their creativity in practice. We believe that through the cooperation of the joint laboratory, it will effectively enhance the research and development strength of both parties in the information field and launch higher Level research results and create a better future."
1 
NXP Semiconductors: The next generation experience is favored by the market
NXP Semiconductors (NXP) today announced that its research center, established jointly with the School of Information Science and Technology of Tsinghua University, has made significant progress in wireless communications, multimedia processing and automotive applications for more than a year. As NXP's vivid experience of "next-generation experience" brought by VibrantMedia Technology is increasingly favored by the market, NXP and Tsinghua University decided to rename the research center "NextExperienceLab". This is a strong proof of NXP's long-term commitment to cultivating local talents, increasing R&D projects to promote local innovation, and helping China achieve its transformation from “Made in China†to “Created in Chinaâ€.