Industry dynamic

How to use thermal conductive silicone grease on computers

2020-12-16
For computers, the heat-conducting silicone grease is used to increase the bonding between the CPU and the radiator. Choosing the right smear method can ensure that the CPU temperature is reduced by 4-7 degrees. The purpose of this article is to introduce how to use thermal conductive silicone grease on computers.
1. Preparation
Boxed processors tend to have a clean surface, while bulk processors tend to have a lot of dust or dirt on the surface. We should clean the surface of the processor when we get it.
Clean cotton cloth or cotton ball should be used when cleaning, wipe carefully. If some stains don't come off, use a volatile liquid, such as alcohol. Don't use too much of these liquids. A damp cotton cloth or cotton ball will do. For stubborn stains, repeated wiping should be carried out, to avoid the use of hard items for daubing, if the use of hard items will cause surface roughness, there will be scratches. After wiping clean, the processor should be dried to ensure that the surface is dry.
2. Cleaning before painting
When you get the radiator, also look at the bottom of the transparent film and the radiator base is intact tightly. There may be some residual adhesive after stripping the transparent film before using thermal silicone grease. You can use detergent or clean water to clean it carefully. Dry the radiator base after cleaning and do not use hard objects to touch the ground and cause scratches during cleaning.
The base of the radiator is made of copper and aluminum, which is easy to rust. The clean metal surface is easy to be oxidized in the air. Do not place the radiator for a long time. The time that some radiator deposit is too long or the radiator that is being used should undertake clearing, such radiator base can have oxidation of certain degree more or less, the proposal can use some fine emery cloth, undertake burnish gently when the bottom showed the color of metal it is OK. Do the above cleaning after polishing to remove the impurities.
Step 3 Apply radiators
Correct method: first determine the size of the radiator base and CPU contact surface, apply silicone grease, the amount of daub should be less. If you don't have one, you can use a plastic bag. Don't apply it directly by hand, and then apply the silicone grease in one direction to the area in contact with the CPU. This is to ensure that the silicone grease can fill the area with uneven heat dissipation.
Then use a flat piece of cloth, preferably a clean lens cloth or eyewear cloth, to gently wipe the silicone grease off the bottom of the radiator. Some players may think silicone grease is for better heat conduction, but it's not. Silicone grease has a lower heat dissipation capacity than metal, and the purpose of using silicone grease is to supplement the heat sink base and CPU surface of the two rigid material contact not because silicone grease has a stronger heat dissipation capacity than the heat sink.
If the silicone grease is applied too thick, the HEAT of the CPU will be transferred to the radiator through the silicone grease, so the heat dissipation effect will be significantly reduced. The best way is to wipe off the silicone grease and leave a thin layer in the area where the silicone grease touches. In fact, many people know that silicone grease should not be too thick, generally use the amount of coating to control the thickness of silicone grease, few people would think of using a cloth to wipe off excess silicone grease. This method is very effective.
4. Apply the CPU
Apply silicone grease to the CPU. Many people apply silicone grease in the middle and then squeeze the radiator. This may cause the uneven application or squeeze overflow. The best tool for CPU surface is to use a plastic sheet. Some silicone grease will have a scraper attached. If there is no scraper, you can choose to cut the transparent packaging or other transparent sheets in the product, and the width is much wider than the CPU surface.
The silicone grease is then spread evenly from one corner of the CPU in one direction, covering the entire SURFACE of the CPU. The thinner the silicone grease, the flatter the area of contact. If the bottom of the radiator has a mirror design, then the silicone grease can be coated very thin, thin can appear translucent effect.

Finally, the radiator and the installation, as long as the pressure can not rotate and move the radiator, otherwise it will lead to coated between the radiator and CPU silicone grease uneven problems, there may be bubbles affecting the heat dissipation problems.