High temperature aluminum brazing furnace: Introduction to brazing furnaces for automotive radiator production

The rapid development of the automotive manufacturing industry requires high performance cars that cannot be ignored. The engine provides power for the driving of cars, and as the core component of cars, it is developing towards high-power. With the improvement of engine power performance, the heat production also increases. When the heat cannot be transmitted in a timely manner, it will affect the performance of the engine and even cause the car to "boil", which affects the normal operation of the machine. About 25% -30% of the heat generated by the car engine is dissipated through the heat exchanger. However, if the heat dissipation capacity of the radiator is too high, it will dissipate too much heat into the air, inevitably losing a portion of the heat generated by fuel combustion, which cannot achieve the economic efficiency of car operation. Moreover, if the oil temperature is too low, it will increase the viscosity of the engine oil, increase the frictional resistance of component movement, reduce the output power, and also affect the maneuverability of the car. This puts forward higher requirements for the performance of car radiators. Therefore, the performance of the radiator directly affects the heat dissipation effect of the car engine, and has a significant impact on the economy, reliability, and power performance of the car. Due to the advantages of low processing cost and light weight, aluminum radiators have become the preferred material for radiators. However, the brazing of aluminum radiators is prone to problems such as oxidation, poor filling, and weld cracking.

Continuous brazing furnace is an equipment that uses ammonia decomposition equipment to decompose h and then purify the hydrogen nitrogen mixture as a protective atmosphere for continuous brazing and bright annealing

Application of brazing furnace for automobile radiator production: Iron based workpieces, copper based workpieces, stainless steel workpieces, brazing and other bright heat treatment of stainless steel, carbon steel, brass, copper, ceramics and other parts in industries such as automobiles, diesel engines, aviation, air conditioning refrigeration, gas water heaters, electronics, microwave magnetron tubes, etc.

The equipment composition of the brazing furnace for the production of automotive radiators includes the feeding section, preheating section, heating furnace body, cooling section, discharge section, electrical control system, and ammonia decomposition furnace

The working principle of the radiator brazing furnace: The workpiece is driven by a stainless steel mesh belt, placed on top of the mesh belt, enters from the inlet of the preheating section, and is transmitted through the mesh belt. It is preheated, heated (brazing material melts), and cooled. The workpiece discharged from the cooling section is always protected within the muffle, and due to its reducibility, the surface of the product is bright and non oxidizing. Workpiece welding is achieved by heating the workpiece to melt the filling material (brazing material), using capillary action to fill the gap between the base materials with liquid brazing material, and cooling it to achieve the welding purpose. Manual feeding → mesh belt transmission → preheating section → heating section (brazing material melting) → cooling section → manual feeding

The brazing furnace used for the production of automotive radiators includes the upper part area, preheating area, brazing area, pre cooling area, air cooling area, water cooling area, lower part area, and base

There is a conveyor belt inside the base, which runs through the entire brazing furnace. One end of the preheating area near the upper part area is equipped with a left outer curtain,

The preheating area is equipped with a left hair dryer at one end near the brazing area, and the brazing area is divided into six compartments. The brazing area is separated by an internal curtain, and the side of the brazing area far from the preheating area is connected with a precooling area. The end of the precooling area near the brazing area is equipped with a right hair dryer.

The pre cooling area is connected to an air-cooled area through a conveyor belt arc. The end of the pre cooling area near the air-cooled area is equipped with a right outer curtain, and the side of the air-cooled area far from the pre cooling area is connected to a water-cooled area.