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An air cooled cooling products, the effect of good or bad in addition to the fan to see the air volume, more is dependent on the design of the heat sink. A properly designed heat sink can make the computer run stably when it is not overclocked and not continuously full. It can be seen that the importance of the heat sink, and the heat sink heat dissipation effect and its production process is inseparable.
Nowadays, the production process of heat sink includes several technologies such as cutting, skiving, extrusion, stamping and die casting, etc., and more than ten kinds of specific heat sink manufacturing processes have been developed. In the following article, small make up will be for you one by one, let you in the choice of cooling products do know.
Cutting and aluminum extrusion
Strictly speaking, cutting is the abbreviation of a large class of production technology, such as high-speed cutting, laser cutting belong to this class, but they have a common point is the car, drilling, milling, grinding and other machine tools, in the heat heat sink fin forming process, in order to obtain some more special, fine shape, need to use cutting technology. Mainly used for plate forming (base, fin formation), heat sink grooves, special lines and so on.
Aluminum extrusion is will aluminum alloy ingot heating to 520 ~ 540 ℃, using mechanical pressure, the liquid aluminum through the extrusion die made of steel, in the mold exit to the cooling of liquid aluminum, rapid solidification, become a continuous parallel structure of heat sink in the early embryo, again to clip the early embryo, and he saw us common extruded heat sink.
Precision skiving and aluminum die casting
I have to say, this is a very landmark metal forming process. The definition of precision skiving is to cut a whole piece of metal profile according to the need, using a special planer with precise control to cut out the specified thickness of thin slices, and then bending up to an upright state, as a skived fin.The easier way to think about it is to take a piece of metal and cut it into the shape of a heat sink that we normally see.This method is most common in the pure copper heat sink.
Aluminum die casting is a widely used single aluminum alloy processing process. After melting the aluminum alloy ingot into a liquid state, it was filled into the model, and formed by die-casting machine in one time, and then after cooling and subsequent treatment, it was made into a single die casting heat sink.
Folding and soldering is the mainstream
The thin, dense heat sinks that we see are made in this way. In forming, the edges of the fins are left with a small specially designed bulge, which is fixed in a custom-made mold, and the bulge is bent and locked together to form an orderly arrangement of parallel fins. In combination with stamping, it is mainly used to manufacture parallel dense thin fins for reflow soldering or air duct design.
Soldering is a familiar way of metal processing. The most commonly used soldering method in heat sink processing is reflow welding, also known as reflow welding. At present, most of the heat pipe heat sink, heat pipe and fin connection is welding. Because the joint degree of welding directly affects the heat dissipation effect, the cost of welding is higher.
A variety of heat sink technologies.
Actually we in addition to the above these cooling process forms, as we can often see cold forging, bonded fin, and other heat sink technology, the process is more or less still appear in our computer cooling form, just for the cost or the cause of the heat dissipation effect is less and less, but these are still for heat sink has played a contribution to the development of technology.
2.9’’ bar type tft display module key parameters:
Display Size |
2.9 inch tft (Diagonal) |
Resolution |
320(RGB)X128 |
Module Dimension |
76.90(W)x 42.45(H)x3.2(T) mm |
Active Display Area |
70.08 (W)×28.03 (H) mm |
Viewing Direction |
12:00 |
Driver IC |
HX8238D |
LED Backlight Color |
White LED |
Interface |
RGB |
Luminance |
300 nits |
Touch screen |
CTP optional |
In the early days of computers, there weren't many computer components that used large heat sink. With the increasing power of computers and prevalence of overclocking among computer players, modern computers have increasingly high requirements for the heat sink of important components. Methods of heat-dissipating are various, basically divided into air cooling, chip heat sink, water cooled plate and so on.
The commonly used one---air cooling, in fact, is heat sink fins with good thermal conductivity tightly against the larger chip. Above the heat sink there is a small fan. In this way, the airflow generated by the high-speed rotation of the fan takes the heat away from the fins. Pay attention to these points when choose air cooling: Regardless of the material problem, I believe there are still many people think that, the larger the size of the heat sink is, the better the heat dissipation effect can play. In fact, the quality of heat sink has no absolute connection with its "volume", but the "surface area" size and heat dissipation have a direct relationship. In other words, the greater the surface area of the heat sink is and the more grooves it has, the better it will be.
Copper heat sink has its advantages, also have its disadvantages. As is often the case that distributors and manufacturers always introduce advantages of heat sink while the disadvantages are hardly mentioned. However those shortcomings are often the key to solving the heat sink problems.
Large heat sink has great demand for water quality of heat-supplying system. If it has a simple corrosion phenomenon in the unsafe heating system, chip heat sink manufacturers said that consumers should know whether the heat sinks match the residential heat-supplying system before their purchase.
Since water quality of those residential heat-supplying system can not reach the specification, recently companies have begun to take corresponding anti-corrosion measures.