1. Look at the appearance. A product is like a person, and a product is like a character. Clothing reflects your taste and attitude towards life. The appearance of the product is the same. Basic requirements: uniform chamfering, no burrs, comfortable hand feeling, roughness not greater than 6.3 (Shenzhen Tube Thermal Technology generally presses 3.2), no oil residue on the surface, no oxidation and discoloration.
2. Look at the material. In the case of fierce market competition, some merchants use non-national standard materials for the substrate of the water-cooling plate in order to reduce costs. The substrate of the water-cooling plate is generally aluminum plate. There is little risk on the air-cooled heat sink, but if it is used on a water-cooled plate, there will be a risk of water leakage and corrosion. For a water-cooled board, the use of non-national standard materials can be less than a few hundred to thousands of yuan, which is also an important factor why the quotations of different merchants in the market are different. It can be confirmed by viewing the material source and material report and SGS report.
3. Observe the details of the craft. The material can be the same but the process is different, but the effect of the water-cooled plate is completely different. The process can be started from these aspects.
One is the dimensional accuracy, the hole position accuracy is generally about 0.1mm, and the consistency is good.
The second is the chamfering method. For a manufacturer that strives for perfection, the chamfering must be performed on the machine to ensure uniformity, consistency, and beauty.
The third is to look at the amount of deformation, especially the flatness of the core component mounting area, generally within 0.1mm of any 100*100mm area, and 0.02mm for high requirements. The higher the flatness, the higher the heat dissipation efficiency. You can use a square to put it on a flat surface, and use a feeler gauge to see the size of the gap.
The fourth is to look at the process of waterway formation. For the water-cooled plate with buried copper pipes, because the copper pipe and the aluminum plate are connected through the buried pipe process, and then processed by the process of polishing or flying surface, the surface of the whole water-cooled plate forms a flat surface. You can also judge whether the quality is flat or not. Whether the copper pipe and the aluminum plate are fused into a flat surface. Any gap or unevenness will affect the heat dissipation effect. At the same time, if the joints are soldered by soldering, it will take a long time. There may be water leakage in the joints.
4. Look at the packaging and transportation. As the core component of the equipment, the water-cooled plate is of heavier quality and higher cost. In addition to surface protection, high-quality water-cooling panels will pay attention to the protection of the water channel. Generally, a special cover is used to protect the water channel to prevent foreign matter such as dust from entering the water channel. At the same time, for transport packaging, wooden boxes should be used to prevent damage during transport. For cross-regional products that require high value and timeliness, it is generally recommended to use SF Express or Cross Express.
5. The important thing is that the water-cooled plate must not leak or have the risk of leakage. Every product must pass a leak test and also pass a burst pressure test. For brazed products, due to the large number of welding leakage points, the cavity area may be large, especially in the case of thin walls.
