Box type brazing furnace | batch brazing furnace

Machine Overview

This box type brazing furnace is a factory suitable for small-scale production. Its main functions are welding plate and bar type aluminum heat exchanger, laminated oil cooler, and other aluminum products in other shapes.

The interior of the brazing furnace is of closed design. When the temperature is below 300℃, the vacuum pump will start to work continuously, and the vacuum pump will extract smoke and turbid gas from the furnace,
When the temperature reaches 298 ℃, the vacuum pump will immediately stop, and the nitrogen valve will automatically open. The furnace will be fill with nitrogen to protect the aluminum material from oxidation in high temperature environments.

The maximum working space of this brazing furnace is L1800 * H1000 * W600mm. If your product size is larger, we can make more space for you. Each of our furnaces is made according to the user’s requirements.

Advantages of box type brazing furnace

Very good price advantage

Compared with the vacuum brazing furnace, it has a huge price advantage. The price difference between the vacuum furnace and the box furnace is about 3 times for the same size furnace. If your budget is insufficient, then this brazing furnace is the best choice for you.

Brand new structural design

The heating element is located on the outside of the furnace, which is insulated with refractory bricks. It has sufficient heating capacity, and it only takes 2.5 hours to heat from room temperature to 620 ℃, and 1 hour to cool down from 620 ℃ to 280 ℃. This design not only improves production efficiency, but also has a very good insulation effect, keeping the factory workshop at a comfortable temperature.

Intelligent program control

The engineer can set the process formula of the box type brazing furnace through the touch screen. It will automatically control the temperature, nitrogen pressure, vacuum pressure, forced cooling and other steps. The whole welding process does not need manual participation. Not only that, the control system also adds the Internet of Things technology, which can be link to the Internet, and our engineers can carry out troubleshooting, program upgrading, process improvement and other operations.

Accurate nitrogen control

Before nitrogen enters the furnace, there is a stabilizing valve that controls the pressure of nitrogen. Then, nitrogen enters the flow control valve, and engineers can intuitively view the flow rate of nitrogen. Nitrogen entering the furnace is control by an electronic valve, which can be useing for indirect or continuous nitrogen filling The nitrogen consumption of the brazing furnace is very economical.

Technical parameters of box type brazing furnace

• Effective working size: 1800*1000*600mm
• Customized work size: Yes
• Main application: Aluminum brazing
• Power supply: 380V – 415V / 50Hz
• Voltage: about 95Kw
• Maximum vacuum pressure: -20 kPa
• Maximum load capacity: 1000 kg
• Furnace wall thickness: 10mm
• Furnace wall material: SS316L
• Thermal insulation material: refractory brick
• Forklift: already included
• Furnace door type: rectangular
• Door opening method: manual
• Cooling method: air cooling
• Control mode: fully automatic

Working video of box type brazing furnace

Control system of box type brazing furnace

This brazing furnace is component of heating device, cooling device, vacuum system, nitrogen conveying device, PLC and touch screen intelligent control, etc.

The heating device is divided into two independent heating areas, four thermocouples collect temperature data, they are two thermocouples in the furnace, two thermocouples are in the heating compartment, and there is a highly sealed fan in the furnace to circulate heat, so as to maintain good temperature uniformity in the furnace.

1. The cooling device is two 2.2kW fans. One fan is install behind the brazing furnace, and the other fan is install on the top of the furnace. The two fans blow cooling air to the heating compartment at the same time to achieve efficient cooling.

2. A vacuum pump is an independent working device that usually operates at temperatures between 0-300 ℃. During this temperature stage, it has a degreasing effect, and plate and bar heat exchangers usually release some gas and smoke. The vacuum pump is use to remove the gas from the furnace and maintain a high level of cleanliness inside the furnace

3. The nitrogen delivery pipeline has been scientifically design with pressure stabilizing valves, visual flow control, and electronic valves that automatically control the inflation and closure of nitrogen. Your factory only needs to connect nitrogen to this box type brazing furnace, and its working steps will be finish by itself.

4. The PLC adopts Mitsubishi brand, and the touch screen adopts the latest model. It can meet the transmission technology of the Internet of Things, which means it can access the Internet. As long as your factory has WiFi signals, or your mobile phone turns on WiFi hotspots, the brazing furnace can access the Internet, and Chinese engineers can remotely control it, upgrade programs, troubleshoot, process improvement and other operations.

The application scenarios of this device

This machine is designed for aluminum products. Its main function is to weld multiple aluminum parts under high temperature. At present, it is widely used in the automobile industry, industrial field, household appliances and other industries. Let’s give an example. The box type brazing furnace can be use in the following industries.

Screw air compressor needs a radiator to cool the engine. This aluminum radiator needs this machine to weld.

Household washing machines, some of which have a drying function, among which the most important component for drying is the heater, which is making of aluminum material and needs to be welding at high temperature to form.

In the automotive industry, there are a lot of automotive parts that need to be brazing at high temperature, such as air conditioner condenser, specially shaped aluminium tube, automotive engine radiator, battery cooling plate, etc.

Other types of brazing furnace

Summary

This type of aluminum brazing furnace takes about 3-4 hours for a complete welding process and requires a total voltage of approximately 90 kW. It is specifically design for small-scale production factories,

This furnace adopts a batch production mode and can weld aluminum products with a maximum size of 1800*800*600mm. If the product size is small, it can be welding to multiple factories at once, which can reduce manufacturing costs and improve production efficiency.

If you are really planning to start producing aluminum heat exchangers or plate type oil cooler, this aluminum brazing furnace is very suitable for you. It has the advantages of full intelligent control mode, high-purity furnace atmosphere, and very cost-effective price.