BRAZING RADIATOR

A brazed radiator is a type of radiator made by joining components together using brazing alloy and heat. Compared to mechanical radiators, brazed radiators typically offer better heat dissipation efficiency, smaller size, and lighter weight.

The brazing process involves first assembling the radiator core components such as tubes, tanks and fins. Then a brazing alloy mixture that has a lower melting point than the parts is applied between the joints. The entire assembly is then heated to between 800 to 850 °C, melting the brazing alloy but not the parts themselves. When cooled, the brazing alloy re-solidifies, firmly joining all components together.

The key advantage of brazed radiators is that the brazing alloy forms a metallurgical bond between parts that is stronger and more durable than mechanical attachments. This allows for thinner joints which reduce thermal resistance and increase heat transfer rates.

Ropas can now produce more than 3,000 varieties of brazing radiators, with a capacity of 30,000 pieces per month.

The Process of brazing radiator

1. Fin cutting: Select the appropriate specifications of aluminum foil and tools on the fin cutting machine.
2. Core Assembling: Place the side plate, tube, fins and soldering piece on the core assembly table in turn, the rear cylinder is clamped, and install the two side header.
3. Bundling and flattening: Put the core on the bundling table, adjust the cylinder according to different cores, clamp the cylinder, bundle the wire at 50-80mm from the header, and bundle the wire at 150-200mm every interval. Knock the header flat and use flaring tool to expand the tube.
4. NB protection tunnel brazing
   Degreased brazing: put the semi-finished products into the brazing furnace mesh belt, the product will go through four processes of degreasing, spraying, drying and brazing.
5. Crimping:According to the header and water chamber, select press button of the crimping machine, adjust the machine table, then put the water chamber into the header slot, and put it on the adjusted crimping machine for pressurizing the water chamber, After that, take out the pressurization of the water chamber on the other side by the above method.
6. Testing: put the semi-finished products with water chamber on the dry inspection table, adjust the equipment parameters, the water chamber inlet blocked with the plug, and charge the product with 0.15MPa compressed air from the water outlet of the water chamber,hold pressure for 60s, no leakage, paste the qualified mark on the product that does not leak, and flow into the next process.
7. Shaping and Accessories: Put the qualified product on the table for the appearance treatment and the accessories installation. After the installation is completed, flow into the next process.
8. Packing: Put the finished product with the parts into the corresponding carton according to the customer’s requirements. Than,paste the logo and shipping mark,be put into warehouse.