In the field of LED lighting applications, wireless technology has gradually been integrated into the overall solution. With the concept of smart home, wireless integrated control methods such as wireless light control and wireless dimming are increasingly favored. In the European and American markets, there is already a mature central monitoring lighting system, and China's lighting market is not mature, limited to simple operation procedures such as opening and closing, so it has great development space.
As a major feature of intelligent lighting, in fact, wireless control has been applied to lighting control as early as 2005, but due to various technical bottlenecks and cost constraints, it has become the mainstream of the market until now. The biggest challenge of wireless control is how to ensure the stability and accuracy of wireless transmission and reception, as well as the problem of automatic connection. Compared to wired power carrier (PLC) transmission methods, wireless transmissions need to constantly face interference from various environmental factors.
Currently, the mainstream wireless transmission standards in the market include Zigbee, Bluetooth, and WiFi. Liang Yurong said that Bluetooth has a short transmission distance and few transmission channels; WiFi consumes a lot of power and equipment costs are high; therefore, for home lighting only, Zigbee has both technical and cost advantages.
Many LED wireless lighting solutions on the market adopt the currently popular Zigbee standard and cooperate with TI to develop a control network platform. Liang Rongrong introduced that after more than ten years of research and development by the R&D team in Australia, Weibo Technology has launched a variety of LED lighting solutions to successfully overcome the stability and accuracy of wireless transmission and reception, and can be China. Manufacturers provide technical services from research and development to direct production.
For Chinese manufacturers, due to the high threshold of wireless technology, ordinary production engineers face many difficulties in debugging and application. In this regard, Liang Haorong said that Weibo's LED wireless lighting solution can provide production testing and other services, and specifically launched a platform called PSWnetwork for ordinary engineers to solve various technical problems at any time.
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.
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Type
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Clamp force (ton)
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Max. shot volume (oz.)
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Clamp stroke (in.)
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Min. mold thickness (in.)
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Platen size (in.)
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Hot chamber
|
100
|
74
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11.8
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5.9
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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
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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.
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Materials
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Properties
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Aluminum alloys
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·Low density
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·Good corrosion resistance
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·High thermal and electrical conductivity
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·High dimensional stability
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·Relatively easy to cast
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·Requires use of a cold chamber machine
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|
Copper alloys
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·High strength and toughness
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·High corrosion and wear resistance
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·High dimensional stability
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·Highest cost
|
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·Low die life due to high melting temperature
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·Requires use of a cold chamber machine
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|
Zinc alloys
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·High density
|
|
·High ductility
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·Good impact strength
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·Excellent surface smoothness allowing for painting or plating
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·Requires such coating due to susceptibility to corrosion
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|
·Easiest to cast
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·Can form very thin walls
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·Long die life due to low melting point
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·Use of a hot chamber machine
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Advantages:
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·Can produce large parts
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·Can form complex shapes
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·High strength parts
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·Very good surface finish and accuracy
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·High production rate
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·Low labor cost
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·Scrap can be recycled
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Die Casting,Aluminum Die Casting,Die Casting Parts,Zinc Die Casting
Ningbo City Yinzhou Ruican Machinery Co.,Ltd , https://www.factoryforging.com