Introduction to pressured tube processing technology of LORI’s liquid cooling plate

The liquid cooled heatsink has a very good effect on the heat dissipation of high-power devices, so many users will choose the heat dissipation scheme of the liquid cooled heatsink. The production process of the liquid cooling plates is more complicated than that of the general air cooled heat sink, and the liquid cooling heat dissipation requires higher reliability on the process, so only the strong technical precipitation manufacturers can provide reliable technical support. LORI heat sink has been providing customers with high quality liquid cooled heatsink and liquid cooling solution for many years.

Pressured tube technology is the most used liquid cooling heat sink production custom process, generally speaking, is aluminum base buried copper tube, the aluminum base with CNC machining milling groove, and then using a press will have been bent shape of copper tube pressed to aluminum base, brazing welding, and then after processing into water cooling plate. Buried tube type liquid cooling plate generally has three forms: one is shallow buried tube liquid cooling plate; Second, deep buried tube liquid cooling plate; Three is the welding pipe technology; Four is the double-sided clamp tube technology liquid cooling plate.The three forms of technology are not different, the processing difficulty is the same. Some liquid cooling principles originally designed for high-power switching devices can also be used for reference in power battery cooling systems.

Do you really know anything about liquid cold plate

Liquid cold plate manufacturers pose a great threat to modern electronic equipment, which will lead to unstable operation of the equipment system, shorten the service life, and even burn some parts. Because of the high temperature caused by the paralysis of a lot of equipment, people came up with many ways to solve the problem. Heat sink is the measures to solve the heat dissipation). In many electronic products have Heat sink, such as computer, etc. As a result of product variety more, heat sink variety. liquid cooling plate are one of them.

A cold plate heat sink is a forced circulation of a pump-driven liquid to take away its heat. Compared with the air cooling heat sink , it has the advantages of quiet, stable, little dependence on the environment, etc., The heat dissipation efficiency of the heat sink manufacturer of water cooling plate is related to the thermal conductivity of the heat sink material, the heat capacity of the heat sink material and heat sink medium and the effective radiant area of the heat sink.

Want to know more information on the cost of cold plate, please click on "Cold Plate Manufacturing Cost ".

According to the way of heat taking, the Heat sink is divided into two categories: active heat dissipation and passive heat dissipation.The former is the air cooling Heat sink, the latter is the Heat sink cooling further subdivision can be divided into air cooling, heat pipe, liquid cooling, semiconductor making and compressor refrigeration.Air cooling is the most common and very simple, that is to use the fan to take away the heat absorbed by the Heat sink it has the advantages of relatively low price, simple installation, the goal of the environment is very strong physical such as when the temperature and rate is too high, its thermal performance will be greatly affected

According to the way of heat taking, the Heat sink is divided into two categories: active heat sink and passive heat sink .The former is the air cooling Heat sink, the latter is the Heat sink cooling further subdivision can be divided into air cooling, heat pipe, liquid cooling, semiconductor making and compressor refrigeration. Air cooling is the most common and very simple, that is to use the fan to take away the heat absorbed by the Heat sink it has the advantages of relatively low price, simple installation, the goal of the environment is very strong physical such as when the temperature and rate is too high, its thermal performance will be greatly affected.

How about water cooled plate manufacturer current development situation ?

Water cooling technology of water cooled plate manufacturers has been used for a long time for heat dissipation of mechanical parts, but due to the limitation of some processes or material, has not been widely used. Technical constraints such as machining, pipe embedding, bonding, coolant and leakproof need take a long time to develop and verify. Another reason for the limited application of water cooling plate is the manufacturing cost of water cooling plate

In recent years, with the progress of processing technology and the improvement of machining accuracy of machine tools, the production of liquid cooling cold plate such as microchanneled liquid cooling cold plate is more and more easy to realize.

Lori as a high power heat sink manufacturer, has increased the investment in liquid cooling research and development, the maturity of key processes such as buried pipe and welding, the cost of cold plate decline year by year, no doubt is one of the important advantage promoting water cooled heat dissipation, the application of water cooling technology is in constant expansion, the original is only applicable to automobiles, data center and other large equipment,  now can be used for home computer heat dissipation.

In the recent two years, new energy industry is developing rapidly, more and more new energy use in the field of cold plate , such as a new energy of power battery, electric car controller, pv inverter, wind energy converter are all use liquid cold plates cooling. we can say, in the future, further development of new energy water cooling technology will meet  more widely application. The application and promotion of cold plate liquid cooling technology is based on the high efficiency of water cooling plate. Compared with other cooling methods, water cooling plate has incomparable advantages. Through reasonable heat dissipation design, can effectively and quickly take away the heat, achieve the fast cooling of mechanical parts, ensure efficient operation of machine parts.

Aluminium cold plate

For high-end electronic products, the cooling structure is required to take up as little space as possible. the weight of the lighter the better, the more reliable performance, the better, air cooling heat sink obviously unable to meet this requirement, the designers gradually change from air cooling heat sink to water cooling plate, the solution involves what process can be used to process the custom cold plate to achieve the design intention.

Currently, there are three options:

1. Heat pipe heat dissipation;

2.The aluminum plate buried copper pipe to form a channel heat dissipation;

3. One cold plate, directly milling groove in the aluminum plate , cover plate welding to form a channel. The above three water cooling plate design schemes are analyzed as follows:

Heat pipe heat dissipation: basically is in the vacuum of the tube body form self-cooling cycle, but the scheme can not do large cold plate, at the same time inconvenient maintenance.

Buried pipe heat dissipation: the production cost of buried pipe heat dissipation is relatively low. The grooves are milling out in the aluminum plate and buried into the copper pipe according to the grooves to form a closed channel. The copper tubes and aluminum plates are filled with a gelatin.The scheme can meet the requirements of heat dissipation, but the disadvantage is that a large heat dissipation interval cannot be formed locally and it cannot meet the requirements of heat dissipation of some structural parts.

Integral cold plate: direct groove in the aluminum plate, plate welding forming channel, this needs to choose a kind of welding process on base plate and the cover plate sealing, preliminary selection of brazing process, brazing solder are the shortcomings of easy to loss, loss of solder may clog waterways, loss of the position of the solder will appear the phenomenon of not welded, led to the channel leakage.The yield is subject to manual proficiency, sense of responsibility, consistency of solder and control of the temperature in the furnace. The yield is about 80%.Too many uncertainty factors lead to the use of this process welding liquid cold plate is not reliable, especially on the important structure is rejected this process.

Because of the unreliability of the brazing process, the radar electronic heat sink has sought for the friction stir welding process to produce the aluminum cold plate. The friction stir welding process has shown its incomparable advantages in this product:

1. Welding under normal temperature without groove opening, filler, vacuum or gas protection;

2. Pleasant working environment, no noise, arc and radiation during welding;

3. High yield, numerical control operation, independent of manual proficiency;

4. High efficiency, with the same material and correct parameters, the yield is 100%.

The way of water cooling plate will replace the air cooling heat sink , and friction stir welding process will be favored by the structural designer with incomparable advantages!

Development of friction stir welded cold plate

High performance Cold Plate has been developed by Friction Stir Welding Porcess; The Copper pipe was embedded in the machined groove of aluminum base plate by using Friction Stir Welding , thermal performance of the Cold Plate are approximately 30% higher than that of the conventional Cold Plate fixed by bolts. Strong bonding between copper and aluminum was established by optimizing the  Friction Stir Welding conditions. Lori Quality Engineering was used to seek optimum robust conditions of Friction Stir Welding. Eight control factors were selected from Friction Stir Welding conditions and dimensions of the parts, and noise factors were determined by the gap between the copper pipe and groove of the aluminum base plate. SN ratios of eighteen welded specimens were calculated by thermal performances of specimens. The factorial effects graph was considered from the data of the SN ratios of 18 combinations, the optimum condition was determined by choosing the control factors that had the highest SN ratio. Stable and higher thermal performance was obtained because the Cold Plate was produced under optimum robust condition, even if there were large gaps between copper pipe and aluminum groove before Friction Stir Welding. The Quality Engineering is very effective to seek robust production conditions, many variety of high performance Liquid Cold Plates have been manufactured in short preparation period based on this technique in our company.

Cold plate heat sink experts look into the future of new energy vehicles

Some time ago, many countries have issued a ban on fuel cars timetable, for new energy vehicles is undoubtedly a great benefit, but also to the development of new energy vehicles into a strong power, so the development of new energy vehicles in the future is what? the following cold plate heat sink experts for everyone analysis.

For the development of new energy vehicles, the Chinese government is undoubtedly the most powerful in promoting the development of energy saving and new energy vehicles (2012-2020), which points out that the production capacity of pure electric vehicles and plug-in hybrid electric vehicles in China will reach 2 million by 2020, and the cumulative production and sales volume will exceed 5 million. According to the statistics of water-cooling radiator experts, by the end of 2017, China's new energy vehicle ownership reached 1.53 million, according to the planned development space, the future growth rate will be greater.

In the future, policies on new energy vehicles will be more reasonable. The plan of withdrawing fiscal subsidies for electric vehicles in 2020 has been determined, and the dual-point policy for new energy vehicles will be formally implemented soon. Measures will continue to be taken to expand the sales quota of new-energy vehicles, explore new markets for Shared cars, and improve the construction of charging facilities. In addition to subsidy policies, technical standards on the comprehensive capacity and emission of new energy vehicles will also be improved. Water cooled plate  experts also pointed out that the policy innovation for new energy vehicles will be further promoted. In the future, policies will be guided from the perspectives of carbon trading system, electricity price reform, business model innovation, automatic driving planning layout, and diversified power sources.

New energy vehicle technology innovation will become the focus. New energy vehicles pure electric and intelligent is the future of the most important direction of development, in addition to the water cooling radiator experts think the industry will further increase the research and development of fuel cell engine, fuel powered cars will become in addition to power battery cars a bright spot. The future of new energy vehicles will also be combined with the implementation of major artificial intelligence projects, the development of intelligent networking, automatic driving technology platform. New energy vehicles will also evolve into mobile personal application space and interactive terminals. It can be seen that intellectualization will be an important feature of new energy vehicles in the future.

The market for new energy vehicles is very broad.The innovative development of emerging business models such as Shared cars and self-driving rentals will greatly promote the popularization of new energy vehicles. New energy vehicle enterprises will also gradually transform from a single provision of automobile products to a combination of products, services, charging, operation and other links and a new business model. New energy vehicle will develop into a systematic thing.

The development of new energy vehicle related facilities will be more complete. Charging ways, charging interface will form a unified standard further, new energy vehicle in electricity infrastructure system in field of private and public charging charging pile pile will maintain steady growth, the unit interior than charging infrastructure construction to speed up the pace, regional car pile will be further optimized, charging service platform that integrates development, accelerates the development of intelligent at the same time, can be activated at the same time the application of new energy, new energy and form a good interaction.

Liquid cooling vs. air cooling: What you need to know

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.