Development of the tension spring

Spring is an elastic mechanical parts to work. Parts made of elastic material deforms under external force, and then remove the external restitution. Also known as "spring." Generally made of spring steel. Complex and diverse types of springs can be divided into torsion springs, compression spring, carbon nano-springs, tension spring.
The main function

① control the mechanical movement, such as an internal combustion engine valve springs, clutch control spring.
② absorb vibration and impact energy, such as cars, train carriages under the buffer spring, in the coupling of the vibration absorbing spring.
③ storage and output energy as the driving force, such as watch springs, firearms in the spring.
④ used force components, such as dynamometer, spring in the spring. Than the spring load and the deformation of the known spring stiffness, the greater the stiffness, the more hard spring.

Since the reform and opening up, with economic globalization and China tends to establish the status of a big manufacturing country, supporting the spring surge in demand. Plus the amount of investment in the spring production is not high, low technical threshold, fast return on investment, from the beginning of the 1980s, the rapid increase in the number of spring manufacturer. Among manufacturing industries throughout the spring, although a small industry, but it is absolutely the role can not be underestimated. Country's manufacturing industry, the automotive industry to accelerate the development, and as basic parts, parts of the spring industry has increased the need to have a super early development, in order to adapt to the rapid development of the country throughout the industry. In addition, the expansion of the scale of spring varieties of products, but also the need to improve the quality level of performance and supporting a host of improved machinery and equipment replacement needs, therefore, the development of the national industry, spring products play an important role.
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Development of the Conference camera

Conference camera is used in professional video conference, lecture, video classrooms, remote video terminals supporting an important part, especially for a variety of remote camera applications, primarily for the telecommunications, education, government, military and other industries, such as video conferencing , distance learning, surveillance, medical, conference and training rooms, courts and Internet communications. In the "Conference Recording", the spokesman of multimedia courseware can play, mouse movements, keyboard input, blackboard writing on the blackboard, the spokesman explained, participants questions such as live synchronous compression, synchronous transmission, live.

PTZ camera with PTZ camera is. It carries cameras with both horizontal and vertical directions rotating device, the camera can be imaged from multiple angles cameras mounted on the head. Two sets of built-in motor. Horizontal and vertical angle of rotation can be adjusted by the size of the limit switch. Is divided into indoor and outdoor PTZ PTZ. PTZ is installed, the fixed camera support equipment, which is divided into two kinds of fixed and motorized PTZ. It can be used in a video conference, audio quality of university courses, training, auditoriums, churches, dance, opera, drama teaching, studio, sports stadiums, broadcast trucks, urban landscape, the courts, prosecutors, zoo, video analysis, military, prison security, weather monitoring.

With the rapid development of digital technology, the field of security comprehensive digital transformation, since 2000, the digital security market has been the rapid development of the domestic birth of a number of emerging digital surveillance products manufacturer, with digital security products represented the rapid rise of DVR manufacturer, in a few years time there will be digital control technology to all walks of life, to social stability and to make a positive contribution to the stability and unity, but also to the existing surveillance market has undergone a fundamental changes gradually withdraw from the market products analog monitor, DVR digital security as a major component of the project has been widely used, national brand products and gradually occupy a major share of the market.
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Introduction of plastic mould

Plastic mould, plastic processing industry and plastic moulding machines for plastic products supporting a complete and accurate size configuration tool. Because many plastic varieties and processing methods, structural plastic moulding machine and plastic products and simplify different, so the plastic mould type and structure is changing.
Depending on the molding method can be divided into a corresponding mold plastic processing require different types of treatment, mainly injection molding, extrusion dies, plastic moulds, high modulus polystyrene foam. Because the material, appearance, specifications and uses a variety of different mold products can be divided into the casting mold, forging, die casting mold, stamping mold and other non-plastic molds and plastic molds.
Since the development of plastics and plastic mould industry, plastic mould manufacturer plastic mold quality requirements are also increasing, mainly to produce precision plastic mould plastic mold for the purpose, the main components of the mold is a molded plastic parts, such as punch , die, which form the mold cavity plastic in direct contact with the surface of a variety of molded plastic and plastic parts to withstand the pressure, temperature, friction and corrosion.
Various tools and products that we use daily production and life, and a large machine base, body shell, an embryo as small head screws, buttons and various household appliances in the shell, all with mold related. These products determine the shape of the mold shape, high precision plastic mould processing quality to determine the quality of these products. China plastic mold in promoting high-tech-driven application requirements and pillar industries, forming a huge industrial chain, from upstream raw material industry and the processing and testing equipment to the downstream machinery, automobiles, motorcycles, home appliances, telecommunications, building materials, etc. the main application industries, plastic mold development life.
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Brass faucet’s safety issues

Faucet first appeared in the 16th century, bronze casting, the main role is to control the size of pipes, and water flow switch. By function can be divided into basin faucet, bath, shower, kitchen sink taps and electric faucet, as people's living standards improve, more and more fast electric faucet welcomed by consumers, is expected to become the leading revolutionary The new leading protagonist.
Now, in the face of this world faucet production materials are zinc alloy, copper, iron, stainless steel and other materials. After plating alloy is easily oxidized, shedding, not durable, alloy harmful substances, I strongly do not recommend iron alloy is more durable, and easy to rust, rust equally harmful. Oxidized plated brass faucet do not fall off, there is a very long time, as long as a well maintained surface will look like new, will not rust, particularly durable. Gravity casting brass faucets are good! But there are some companies in recent years, especially in copper prices soaring, they are in pursuit of higher profits, regardless of quality, cutting corners, faucets add excessive levels of lead, harm to human health. So we bought a brass faucet to find some of the best known brands, brass faucet I use now is very good, I bought a few years, until now my house basin faucet are like new, but also for our consumers , this basin faucet cheap and reasonable.
Brass faucet if it contains too much lead in the body will cause great harm. Lead poisoning affects the physical and mental obviously, is more obvious for children and pregnant women, due to the physiological characteristics of growth and development, lead poisoning of pregnant women will be serious premature birth, abortion. Lead poisoning affects infants and young children's growth and mental development, caused severe dementia. We only reduce the lead content in drinking water to ensure that people's intake of lead. As well as low-volume use of leaded brass faucets.
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Introduction of plate heat exchanger

Plate heat exchanger is a heat exchanger, a metal plate for heat transfer between the fluid . This has the advantage of a major surface area exposed to the fluid heat exchanger is larger in the past , because the fluid distribution plate . This facilitates the change of temperature of heat transfer and significantly improve the speed . Plate heat exchangers are now common and very small brazed versions in the hot part of the millions of combination boilers use . For such a small physical size of the combination of high heat transfer efficiency improved domestic hot water boiler (DHW) traffic. Gasketed plate heat exchanger has a great influence in the domestic heating and hot water. Large commercial versions use gasketed plate heat exchanger , a smaller version of the often brazing. The concept behind the use of the heat exchanger pipe or other storage container by a cooling fluid and another fluid between the heat transfer to heat or . In most cases , the exchange of one another includes a fluid chamber containing fluid through the serpentine tubes . The tube wall is usually made of metal or other materials having high thermal conductivity to facilitate the exchange , the larger chamber of the housing is made of plastic or coated with a thermally insulated to prevent heat escaping from the heat exchanger.
1 , plate heat exchanger is made of synthetic polymer made ​​using a special process , with high water vapor permeability , air tightness , tear resistance, aging resistance and other characteristics,
2 , plate heat exchanger products energy savings reached the international advanced level , long life and good conductivity, temperature , suitable for indoor and outdoor temperature difference is small wet areas
3 , plate heat exchanger can be configured according to the user's requirements heating , cooling, humidification, purification, muffler and other segments of different functions .
4 , usually stainless steel plate heat exchanger (sus 304, sus316), high temperature titanium alloy in a vacuum brazed brazed or synthesis using modular seals bolt lock .
5 , forming a compact plate heat exchanger, it can withstand continuous operation under high temperature and high pressure conditions.
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