· IT giants layout car network optimistic about the automotive industry "Qian Jing"

According to foreign media reports, Samsung Electronics will acquire Harman International Industries for $8 billion ($112 per share) and the acquisition will be completed by mid-2017. This merger is the largest acquisition in the history of Samsung, and is also considered by the industry as a sign of Samsung's entry into the automotive sector.

It is understood that Harman is a well-known auto parts manufacturer in the United States, and has its own advantages in 3D navigation, security systems, and audio systems. However, the industry believes that Samsung's acquisition of Harman is to follow Apple and Google, develop in-car smart technology, and achieve important cooperation in the field of intelligent network and automatic driving. According to data from Harman's first three quarters, 65% of the company's $7 billion in sales revenue comes from autonomous driving, such as in-car infotainment systems, in-vehicle information, and connected security services.

In fact, car manufacturers have always feared technology companies like Apple, Google, and Samsung because they can track everything from driving mode to engine performance. This is precisely the weakness of automakers in the future layout of autopilot and car networking. .

Hardware manufacturing, communication networks, and big data are Samsung's expertise, especially Samsung's technical mastery in 5G. Samsung will have a greater advantage in the future of "making cars". The industry generally believes that the realization of car networking and autonomous driving Generally speaking, an important premise is that 5G is fully developed with bandwidth and speed. Samsung Electronics has said that it will start trial operation of 5G in 2018, and it is expected to be launched across the 2020.

Sun Yingquan, president of Samsung, also said that they have no intention of building a car. “Some automakers come to us and ask us to help technology such as 5G networks, or artificial intelligence. With this acquisition, we can use our own technology to provide better experience for automakers.” Sun Yingquan said in an interview.

In fact, it is understood that as early as 1994, Samsung Electronics had set up "Samsung Motors", but after the outbreak of the Asian financial crisis in 1998, this business was also shocked, and Samsung finally transferred the auto assets to Renault.

Qualcomm wireless charging technology

Compared with Samsung's layout in the field of car networking consumption, another technology giant Qualcomm is directly attacking another core area of ​​the future automotive industry - processor and wireless charging.

Earlier this year, Qualcomm introduced the SnapdragonTM automotive processor, the Snapdragon 820 Automotive Series, which provides a scalable next-generation infotainment, graphics and multimedia platform that supports machine intelligence and includes versions that support LTE-Advanced. All along, Qualcomm has an absolute dominance in the field of 3G and 4G communications.

Recently, Qualcomm announced that it will cooperate with Puri Corporation, a subsidiary of Ningbo Joyson Electronics Co., Ltd. (SSE:600699), to sign a wireless vehicle wireless charging (WEVC) license agreement. Puri will include Qualcomm Halo WEVC technology in its portfolio and will focus on supporting plug-in hybrid electric vehicle (PHEV) and pure electric vehicle (EV) manufacturers to commercialize WEVC systems. Based on this agreement, Preh plans to develop, manufacture and deliver WEVC systems based on Qualcomm Halo technology.

It is understood that Puri is also a leader in the field of automotive power electronics and connected cars. Qualcomm said it will provide Puri with a comprehensive technology transfer portfolio to enhance Puri's capabilities in both developer and technology-friendly WEVC systems. At the same time, Qualcomm is also negotiating advanced WEVC projects with a number of global automakers.

In the eyes of the industry, as the technology of electric vehicles continues to mature and develop, wireless charging and fast charging will become key technical competition areas in the automotive industry in the future. At present, many electric vehicle manufacturers, such as BYD and Tesla, have a charging market of about 5 hours, and at the same time, the coverage of charging equipment is small, which greatly reduces the practical value of electric vehicles. However, in the materials provided by Qualcomm, their advantages in wireless charging technology are not mentioned.

"Gravity Die Casting. A permanent mould casting process, where the molten metal is poured from a vessle of ladle into the mould, and cavity fills with no force other than gravity, in a similar manner to the production of sand castings, although filling cn be controlled by tilting the die."

Gravity Die Casting

Sometimes referred to as Permanent Mould, GDC is a repeatable casting process used for non-ferrous alloy parts, typically aluminium, Zinc and Copper Base alloys.

The process differs from HPDC in that Gravity- rather than high pressure- is used to fill the mould with the liquid alloy.

GDC is suited to medium to high volumes products and typically parts are of a heavier sections than HPDC, but thinner sections than sand casting.

There are three key stages in the process.

  1. The heated mould [Die or Tool] is coated with a die release agent. The release agent spray also has a secondary function in that it aids cooling of the mould face after the previous part has been removed from the die.
  2. Molten metal is poured into channels in the tool to allow the material to fill all the extremities of the mould cavity. The metal is either hand poured using steel ladles or dosed using mechanical methods. Typically, there is a mould [down sprue" that allows the alloy to enter the mould cavity from the lower part of the die, reducing the formation of turbulence and subsequent porosity and inclusions in the finished part.
  3. Once the part has cooled sufficiently, the die is opened, either manually or utilising mechanical methods.

Advantages

  • Good dimensional accuracy
  • Smoother cast surface finish than sand casting
  • Improved mechanical properties compared to sand casting
  • Thinner walls can be cast compared to sand casting
  • Reverse draft internal pockets and forms can be cast in using preformed sand core inserts
  • Steel pins and inserts can be cast in to the part
  • Faster production times compared to other processes.
  • Once the tolling is proven, the product quality is very repeatable.
  • Outsourced Tooling setup costs can be lower than sand casting.

Gravity Casting Parts

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