1. What is water cooling and heat dissipation

Compared to air cooling, water cooling is widely used in industries such as new energy vehicles and industrial electronics due to its flexibility, lightness, reliability, efficient heat dissipation, and no need for maintenance. A complete water cooling system generally includes a heat absorption device (close to the heat source), a liquid delivery pipe, a heat dissipation device (heat sink+fan, etc.), and a liquid delivery pump. Currently, common industrial water cooled radiator products include water cooled plates, water cooled shells, and water cooled boxes. The product structure and heat dissipation principle are as follows: the base plate of the flow channel structure is bonded to the cover plate, and a sealed cavity is formed by friction stir welding process. The cavity flow channel is equipped with inlet and outlet water nozzles, which connect the water delivery pipe and the delivery pump. Through water circulation flow, the heat is quickly diffused to the overall water cooled plate to avoid heat accumulation, The operating temperature of the product is then controlled.

2. Why is friction stir welding the best choice for welding water cooled and heat dissipating products?

Friction stir welding is based on the extreme plastic deformation of metal materials. When the stirring needle is slowly inserted into the metal base metal, the pressure exerted by the stirring head due to heat generated by friction causes mechanical deformation of the metal, forming a dense weld and achieving a homogeneous grain structure.

Compared with traditional metal fusion welding, friction stir welding has the advantages of high strength, less leakage, and less deformation. The weld is almost free of pores and leaks, and the joint strength is much higher than that of fusion welding. This welding process is very suitable for welding and molding of water cooled radiators.

3. What are the common water cooling and heat dissipation products?

Common water cooling and heat dissipation products include new energy motor housings, electronic control boxes, battery trays, heat dissipation and water cooling plates for high-power electronic products, etc. Xiaozhi has compiled some examples of our friction stir welding water cooling products to share for your reference (welcome to contact us at 18858451555 WeChat account)

Water cooled plate

New energy "three electricity" category

Motor housing

Battery tray water cooled plate

New energy electric control box

Other Classes

4、Process flow and precautions for manufacturing water cooled plate products：

1. Product design: The design and manufacturing process of water-cooled plate products should consider many factors, not only the selection of materials, the impact of flow channel structure on heat dissipation, but also whether the product structure meets the welding process. During the product manufacturing process analysis stage, we need to ensure that: 1) the butt clearance and flatness of the cover plate and substrate before welding meet the requirements of friction stir welding; 2) The welding depth affects the welding deformation, and the position of the welding tail hole needs to be determined in advance; 3) Welding is generally used as a pre process, with machining allowance left on the surface of the part. After welding, CNC milling is required. 4) If special surface treatment is required for parts, the influence of color difference at the welding position needs to be considered.

2. Machining: The water cooled plate is the core component of the heat dissipation control system, which has high requirements for its internal flow channel structure, surface roughness, and part accuracy. At the same time, the flatness and fit of the water cooled cover plate also affect the subsequent welding process. These are factors that should be noted during the machining process. In addition, in order to increase the rigidity and wear resistance of the water cooled device, some products will also undergo surface strengthening treatment of the flow channel.

3. Welding processing: The water cooled plate consists of a base metal with a flow path and a cover plate, which is welded by friction stir welding to form a sealed cavity. Welding processing generally requires proofing and simple tooling. Later, batch welding processing requires customization of a set of professional automatic chemical fixtures. (We generally charge for proofing by batch, and provide customers with multiple preferential options for batch processing. Welcome to consult: 18858451555 WeChat account number)

4. Product testing: For water cooled and heat dissipating products, air tightness testing is generally required. Generally, when we conduct welding and proofing, we first perform a weld profile cutting effect to observe whether there are hidden grooves that collapse, and we can also measure weld depth. For batch production, basic air tightness testing is generally required. According to customer needs, metallographic analysis, tensile testing, and actual measurement of working conditions can also be performed (for some products with high value, non-destructive X-ray testing analysis can be performed)

5. Post welding treatment: After welding, surface milling treatment, product surface treatment, etc. to meet the corrosion resistance, wear resistance, decoration, or other special functional requirements of the product.

What customized water cooling products can Youzhi Jingcheng provide?

Product Solutions: We have rich experience in friction stir welding of water cooled heat dissipation products, and can assist customers in providing solutions and design optimization solutions for water cooled products. Can assist customers in the early development of product samples and other work.

Friction stir welding processing: friction stir welding product proofing, batch processing (supporting automatic welding tooling, turnkey engineering services)

Product OEM processing: product precision processing, friction stir welding, post welding processing, professional testing, surface treatment, etc

Processing equipment

Youzhi Jingcheng Construction has two workshops, namely, a friction stir welding product processing center and a numerical control processing center, and more than 10 sets of friction stir welding equipment such as five-axis, large, medium, and small static gantry, and C-type machines; With dozens of high-precision CNC processing equipment, lathes, milling machines, drilling machines, grinding machines, and other types of equipment, it can fully meet the service requirements of industrial enterprises for friction stir welding products and OEM manufacturing.

Detection capability

Currently, we have professional testing capabilities for friction stir welding products. It can perform material composition analysis, mechanical property analysis, product size testing, product performance testing, etc., such as air tightness testing, metallographic analysis, weld defect testing, and welding depth testing.

human resources

In order to meet the needs of customers for friction stir welding product processing, we have established a project operation center, production department, assembly department, quality inspection department, design department, etc., with over 30 professional and technical personnel and workers, and rich practical experience in friction stir welding, covering friction stir welding process and technical services, product structure design, tooling and fixture design, mixing head development, professional testing, product after-sales, and other aspects.

Supporting services

Based on the service concept of "everything for customer convenience", we provide customers with "one-stop" friction stir welding product support services, including welding fixture customization, supporting hydraulic station customization, mixing head customization, product oem services, and professional testing. We provide comprehensive satisfaction, allowing customers to enjoy efficient and worry free friction stir welding product services.