The "2010 China Strategic Emerging Industries and Instrumentation Development Forum" co-sponsored by the China Instrument and Control Society and the Institute of Instrumental Technology, Institute of Mechanical Industry, was held on September 8 at the Beijing National Convention Center. The conference attracted more than 120 representatives from all walks of life such as government-produced universities and research media.

The convening of the forum and the executive meeting of the State Council were reviewed and passed in principle on the same day as the “Decision of the State Council on Accelerating the Cultivation and Development of Strategic Emerging Industries”, although it was purely coincidental. However, it also reflects its inevitability from another aspect. From the beginning of the Premier Wen Jiabao's report on the work of the National People's Congress, he proposed to speed up the cultivation and development of strategic emerging industries. By the time of this strategic emerging industry and instrumentation development forum, the instrumentation industry has started to focus on research and implementation. action. As the experts of the conference said, the development of instrumentation faces new opportunities and challenges at one time.

Instrumentation is an important basic supporting technology and industry for the development of strategic emerging industries. The development of hydropower, nuclear power, wind power, solar power and other new energy sources as well as smart grids, measurement and control systems are an important part of the stable, efficient and safe operation of power stations and power grids. The formulation, composition analysis, molecular structure determination, and tissue image analysis of new materials are inseparable from the application of large scientific instruments and on-line analytical instruments. Energy conservation and environmental protection can be said to "begin to measure and finally control". Automation technology is the main technical means of energy saving. Advanced control system can improve efficiency and reduce energy consumption. Advanced detection technology and optimized automation control program play an important role in energy saving applications. An increasingly important role. The Internet of Things is a network that realizes the full interconnection of people and things, things and things, with the purpose of perceiving it. The outstanding feature is that it acquires various information of the physical world through sensors, and transmits and interacts with information through networks such as the Internet and mobile communication networks. That is, the basis of the Internet of things is the "sensor." The high-end manufacturing industry, especially the high-end equipment manufacturing industry, is characterized by its intensive technology knowledge and high added value, which is automatic control and intelligence. Instrumentation is not only an organic part of strategic emerging industries, but also an indispensable support for the development of strategic emerging industries.

In this forum, Deputy Director of the National Standardization Management Committee, Deputy Director Zhang Qi of the Electronic Science and Technology Committee of the Ministry of Industry and Information Technology, Chief Engineer of Dong Jingwei of Beijing Jingyi Group, General Manager Yang Jinsong of Chongqing Weijian Instrument Manufacturing Co., Ltd., and Beijing Automation Technology Professor Zhao Lixing, Director of the Institute, Zhu Minming, Chief Engineer of Beijing Guangli Nuclear System Engineering Co., Ltd., Professor Wang Xue of Tsinghua University, Manager Li Jianyu of Agilent Technologies, USA, and General Manager Wang Xu of the European Electric and Electronics Industry Office delivered speeches respectively.

Die Casting

The Die Castings that are created in this process can vary greatly in size and weight, ranging from a couple ounces to 100 pounds. One common application of die cast parts are housings - thin-walled enclosures, often requiring many ribs and bosses on the interior. Metal housings for a variety of appliances and equipment are often die cast. Several automobile components are also manufactured using die casting, including pistons, cylinder heads, and engine blocks. Other common die cast parts include propellers, gears, bushings, pumps, and Valves.


Die casting is a manufacturing process that can produce geometrically complex metal parts through the use of reusable molds, called dies. The die casting process involves the use of a furnace, metal, die casting machine, and die. The metal, typically a non-ferrous alloy such as aluminum or zinc, is melted in the furnace and then injected into the dies in the die casting machine. There are two main types of die casting machines - hot chamber machines (used for alloys with low melting temperatures, such as zinc) and cold chamber machines (used for alloys with high melting temperatures, such as aluminum). The differences between these machines will be detailed in the sections on equipment and tooling. However, in both machines, after the molten metal is injected into the dies, it rapidly cools and solidifies into the final part, called the casting. The steps in this process are described in greater detail in the next section.


Die cast parts can vary greatly in size and therefore require these measures to cover a very large range. As a result, die casting machines are designed to each accommodate a small range of this larger spectrum of values. Sample specifications for several different hot chamber and cold chamber die casting machines are given below.


Type Clamp force (ton) Max. shot volume (oz.) Clamp stroke (in.) Min. mold thickness (in.) Platen size (in.)
Hot chamber 100 74 11.8 5.9 25 x 24
Hot chamber 200 116 15.8 9.8 29 x 29
Hot chamber 400 254 21.7 11.8 38 x 38
Cold chamber 100 35 11.8 5.9 23 x 23
Cold chamber 400 166 21.7 11.8 38 x 38
Cold chamber 800 395 30 15.8 55 x 55
Cold chamber 1600 1058 39.4 19.7 74 x 79
Cold chamber 2000 1517 51.2 25.6 83 x 83

The selection of a material for die casting is based upon several factors including the density, melting point, strength, corrosion resistance, and cost. The material may also affect the part design. For example, the use of zinc, which is a highly ductile metal, can allow for thinner walls and a better surface finish than many other alloys. The material not only determines the properties of the final casting, but also impacts the machine and tooling. Materials with low melting temperatures, such as zinc alloys, can be die cast in a hot chamber machine. However, materials with a higher melting temperature, such as aluminum and copper alloys, require the use of cold chamber machine. The melting temperature also affects the tooling, as a higher temperature will have a greater adverse effect on the life of the dies.

Materials Properties
Aluminum alloys ·Low density
·Good corrosion resistance
·High thermal and electrical conductivity
·High dimensional stability
·Relatively easy to cast
·Requires use of a cold chamber machine
Copper alloys ·High strength and toughness
·High corrosion and wear resistance
·High dimensional stability
·Highest cost
·Low die life due to high melting temperature
·Requires use of a cold chamber machine
Zinc alloys ·High density
·High ductility
·Good impact strength
·Excellent surface smoothness allowing for painting or plating
·Requires such coating due to susceptibility to corrosion
·Easiest to cast
·Can form very thin walls
·Long die life due to low melting point
·Use of a hot chamber machine
Advantages: ·Can produce large parts
·Can form complex shapes
·High strength parts
·Very good surface finish and accuracy
·High production rate
·Low labor cost
·Scrap can be recycled


Die Casting,Aluminum Die Casting,Die Casting Parts,Zinc Die Casting

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