Zulu Nylon Strap

Aluminum is a material with good thermal conductivity, so mainly used for heat sink production, aluminum material heat sink we commonly known as aluminum heat sink, all aluminium profile here is not to point to aluminium only, still included aluminium alloy product. Aluminum is soft in texture and has poor corrosion resistance, so the aluminum heat sink will need some necessary surface finish, anodization is a universal surface finish.

　Anodization usually refers to sulfuric acid anodizing, which is the process of forming an oxidation film on aluminum products (anode) under the action of the applied current under the corresponding electrolyte and specific process conditions. This layer oxide film improves the surface hardness and abrasion resistance of aluminum alloy, so as to extend the application range and extend the service life of aluminum heat sink.

In addition, aluminum heat sink through anodized, color will become black, so anodizing is also called black anode, or black oxidation. Anodized aluminum heat sink can also increase the appearance of the product, many electronic products base and housing are black, heat sink is black can form unified tonal, increase beautiful degree. There are customers of the water cooling plates heat sink will also be anodizing surface finish, especially for laser and other optical instruments on the water cooling plate.

Every computer, from the smallest of home theater PCs to the most hulking of gargantuan gaming rigs, generates heat during operation—heat that can kill your PC’s precious internals if you’re not careful.

While you don’t have anything to worry about if you bought your computer from a big-box retailer or straight from a manufacturer like HP, you’ll be faced with a potentially crucial decision if you’re building (or custom-buying) a fire-breathing, benchmark-eating computer: Should you chill your PC with a traditional air cooling solution or a pricier, yet more efficient liquid-cooling system? That question has many aspects to consider before you can answer it.

Cooling methods explained

The secret to harnessing the cooling power of air lies in fans—lots of fans. Your typical air-cooled PC is packed with case fans, graphics card fans, and a CPU fan or two—positioned atop a big metal heat sink—to keep your expensive components nice and frosty.

A water-cooling system, on the other hand, employs a series of coolant-filled tubes, a radiator, water blocks (the equivalent of heat sinks), and a couple of other components to keep your PC feeling refreshed. You’ll even need a few fans to push around all the water!  Our guide to setting up a liquid-cooled PC explains a basic (ha!) system in exacting detail.

Got it? Good. Defining air cooling and liquid cooling is the easy part. The trickier bit is making the decision to use one or the other. 

Air cooling

One of the great joys of using fans to cool your system is that, in a lot of circumstances, you really don’t have to do anything to create a decent cooling setup. If your system’s chassis is of the non-bargain-bin variety, odds are high that its manufacturer has already installed exactly what you need—namely, an intake fan in the front that pushes outside air over your hard drives and an exhaust fan that shoots hot air flying out of the rear of the chassis.

Graphics cards and computer processors pretty much always ship with powerful stock fans—you know, the ones that sound like a plane taking off when they roar into action. Those, combined with case fans, make up the Holy Trifecta of air cooling within a typical desktop PC.

Water cooling

Let’s start with the pleasant bits. One of the key benefits of a strong liquid cooling setup is that it allows you to cool specific system components to a greater degree than if were you to use fans—not the most applicable setup for someone running a typical stock-clock processor, but one that’s definitely of interest to anyone looking to overclock their chips a bit (or a ton).

Even if you don’t tax your rig enough to need a bigger cooling boost, a cheap self-contained water cooling loop—more on those later—can help lower your PC’s sound output. Water cooling is much quieter than stuffing your case full of fans.

There’s also the issue of space. A huge heat-sink/fan combination might perform well enough, but the best CPU coolers eat up a ton of real estate inside your case. Liquid cooling requires much less space, and it looks a lot niftier to boot. You can’t discount the cool factor of a case full of colorful, liquid-filled tubes!

Conclusion

So, which is better? Air cooling or water cooling? The answer depends on your particular usage needs.

One size does not fit all when it comes to case cooling, but most people can get by with fans alone. It’s easy, and it’s cheap. If, on the other hand, you’re an enthusiast who needs the best cooling possible for your flaming CPU and a gaggle of graphics cards, a DIY water-cooling setup is in your future. Finally, try a sealed liquid cooler if you’re considering liquid cooling either to keep your overclocked processor chilled or simply to benefit from reduced system noise.

Which is a better heatsink copper or aluminum? It's a complex question, with many factors. Let's look at some physical properties:

· thermal conductivity (Wm⋅KWm⋅K)

· volumetric heat capacity (Jcm3⋅KJcm3⋅K)

· density (gcm3gcm3)

· anodic index (VV)

· copper: 400

· aluminium: 235

· copper: 3.45

· aluminium: 2.42

· copper: 8.96

· aluminium: 2.7

· copper: -0.35

· aluminium: -0.95

What do these properties mean? For all the comparisons that follow, consider two materials of identical geometry.

Copper's higher thermal conductivity means the temperature across the heatsink will be more uniform. This can be advantageous since the extremities of the heatsink will be warmer (and thus more effectively radiating), and the hot spot attached to the thermal load will be cooler.

Copper's higher volumetric heat capacity means it will take a larger quantity of energy to raise the heat sink's temperature. This means copper is able to "smooth out" the thermal load more effectively. That might mean brief periods of thermal load result in a lower peak temperature.

Copper's higher density makes it heavier, obviously.

The differing anodic index of the materials might make one material more favorable if galvanic corrosion is a concern. Which is more favorable will depend on what other metals are in contact with the heat sink.

Based on these physical properties, copper would seem to have superior thermal performance in every case. But how does this translate to real performance? We must take into account not only the heatsink material, but how this material interacts with the ambient environment. The interface between the heatsink and its surroundings (air, usually) is very significant. Furthermore, the particular geometry of the heatsink is significant as well. We must consider all these things.

A study by Michael Haskell, Comparing the Impact of Different Heat Sink Materials on Cooling Performance performed some empirical and computational tests on aluminium, copper, and graphite foam heatsinks of identical geometry. I can grossly simplify the findings: (and I'll ignore the graphite foam heatsink)

For the particular geometry tested, aluminium and copper had very similar performance, with copper being just a little bit better. To give you an idea, at a 1.5 m/s airflow, copper's thermal resistance from the heater to the air was 1.637 K/W, while aluminium was 1.677. These numbers are so close it would be difficult to justify the additional cost and weight of copper.

As the heatsink becomes large compared to the thing being cooled, copper gains an edge over aluminium due to its higher thermal conductivity. This is because the copper is able to maintain a more uniform heat distribution, drawing the heat out to the extremities more effectively, and more effectively utilizing the entire radiating area. The same study did a computational study for a large CPU cooler and calculated thermal resistances of 0.57 K/W for copper and 0.69 K/W for aluminium.

Extruded aluminum heatsinks are the most common heat sinks used for thermal management today. They are manufactured by pushing hot aluminum billets through a steel mold to produce the final shape. The most common aluminum alloy is 6063-T5, but other 6XXX aluminum alloys can also be examined as needed. When the material is extruded, the initial sticks are 30-40 feet and length and are very soft. The aluminum material is stretched by grabbing both ends to produce a straight stick. After the stretching, the aluminum material can be either air or over aged depending upon the required final hardness of the material. After aging process, the extruded aluminum enclosure is cut to the final length and any final fabrication (holes, pockets, or other secondary machining) can be done. Extruded aluminum heatsink is usually supplied with a “finish”, such as anodizing, which can enhance its thermal performance. The heat sink can also be supplied with a chromate finish, which provides some corrosion protection, or can be used as a primer before a final paint or powder coating is applied. While each extruded shape is unique to the requirements that it was designed for, extruded aluminum heatsinks are the most cost-effective cooling solution. Each shape is engineered to achieve the optimal thermal and structural performance. Lori is the good aluminum heat sink suppliers in china,our lori partners with a large list of vendors which insures that you have the best thermal solution based on your system structure and thermal requirements.

There are a lot of electrical and electronic devices that need heat sink in life, the heat sink shell required by specific products in all walks of life is different in size, material, specification and shape, etc. So the choose and buy the cooling were often are looking for heat sink manufacturer, put forward concrete production requirements to customized processing.

1. Business scope

Lori has 15 years history, the main production and processing all kinds of aluminum automotive amplifier heat sink, aluminum heat sinks and aluminum LED lamp heat sink, heat pipe heat sink, skived heat sink, bonded fin heat sink, liquid cold plate and engaged in processing all kinds of aluminum products, hardware and electronic accessories, heat sink special terminal products, such as the production of the products are widely used in automotive, lighting, electronics, construction and other industries.

2. The strength of the company

Since the establishment of this heat sink manufacturer, continue to explore innovation, accumulate experience, improve the system, has formed a professional system of heat sink production and processing mode.The factory covers an area of 5000 square meters, and it can provide high-end and precise materials for heat sink production. Its strong plasticity ensures that it can be customized into various sizes and shapes. Its high purity ensures that the finished products are wear-resistant, corrosion-resistant and have strong heat dissipation performance.Second, the heat sink manufacturer also bring your own mold factory, heat sink surface processing base, oxide factory, CNC machining center, strong ability of mold design and manufacturing to ensure to meet customer demand for all kinds of custom heat sink, system of perfect surface treatment technology to ensure the production of heat sink on the mechanical properties and thermal performance can be up to standard.Surface processing range includes drawing, polishing, anodic oxidation, electroplating, baking paint, radium carving, from raw material processing to surface treatment one-stop service, not only can help customers from the source to ensure the quality of the heat sink, but also to ensure the delivery time is not delayed.