There are many difficulties in automotive copper radiators with complex shapes and high performance

Traditional heat sinks have good heat dissipation, but they also have serious drawbacks, first of all heavy and bulky. At present, car manufacturers all over the world are trying to reduce their weight. Second, lead is a toxic substance that can injure radiator repair workers and must be protected by special exhaust devices. Again, solder is corrosive. This high-temperature corrosion forms a frost-like material on the top of the radiator tube on the inlet side, blocking the water tube and affecting the performance of the radiator (white deposits are visible at the water inlet and neck). The solution to this problem is to add a complex set of equipment (use special cleaning agents or send special cleaning radiators to remove sediment). Finally, the quality of the solder joint deteriorates, which affects the seal of the radiator tube and the reservoir tank plate, the water storage tank plate, and the water storage tank shell, resulting in leakage of the radiator.

With the increasing number of new models of car manufacturers, there are many difficulties in producing copper radiators with complex shapes and high performance that are suitable for these cars. New radiators have improved radiators. This type of radiator uses a plastic water storage tank and the tank is sealed with synthetic rubber mats. Flanged edges of the tank were crimped with a metal strip with connectors. Plastic tanks are lightweight. Although small quantities are expensive to produce, they are inexpensive when produced in large quantities, and plastic products can be used to make a variety of desired shapes. The plastic water storage tank is sealed with a rubber lining potential without soldering. When the seal is bad, the pad can be changed without a set of welding equipment. Aluminum radiators with plastic water storage tanks are an improvement. There are usually two methods for the assembly of aluminum radiators: one is a purely mechanical assembly, and a hole is drilled in the tank plate, and the water pipe is inserted into the hole to closely fit; Brazing in vacuum or atmosphere. Lead-based solder is not used in both sealing processes.