High-quality hot air reflow soldering

High quality hot air reflow soldering

Infrared + hot air reflow soldering: It is heated by 30% infrared and 70% hot air as the heat carrier. The infrared hot air reflow oven effectively combines the advantages of infrared reflow soldering and forced convection hot air reflow soldering, and is an ideal heating method in the 21st century. It takes full advantage of the strong penetrating power of infrared radiation, high thermal efficiency, and energy saving. At the same time, it effectively overcomes the temperature difference and shielding effect of infrared reflow soldering, and makes up for the effect of hot air reflow soldering on the excessively fast gas flow rate.
This type of reflow oven is based on the IR oven with hot air to make the temperature in the oven more uniform. The heat absorbed by different materials and colors is different, that is, the Q value is different, and the temperature rise caused by it is also different. For example, the package of SMD such as IC is black phenolic or epoxy, and the lead is white metal. When it is simply heated, the temperature of the lead is lower than its black SMD body. With the addition of hot air, the temperature can be more uniform, and the difference in heat absorption and poor shadows can be overcome. Infrared + hot air reflow ovens have been widely used in the world.
Since infrared rays will produce bad effects of shading and chromatic aberration in parts of different heights, hot air can be blown in to adjust the chromatic aberration and assist in the lack of blind spots. Hot nitrogen is the most ideal blowing hot air. The speed of convective heat transfer depends on the wind speed, but excessive wind speed will cause the displacement of the components and promote the oxidation of the solder joints. The wind speed is controlled at 1. Om/s~1.8ⅡI/S is appropriate. There are two forms of hot air generation: axial fan generation (it is easy to form laminar flow, and its movement causes unclear boundaries between temperatures) and tangential fan generation (the fan is installed outside the heater to generate panel vortex so that each temperature zone can be Precise control).

Product features

1. With temperature tolerance, fault diagnosis, sound and light alarm functions.

2. Modular design of the heating zone, convenient maintenance and disassembly, independent small circulation air transport design, upper and lower heating methods, good thermal compensation, high thermal efficiency, power saving, plus

  Fast temperature speed, suitable for welding of high-quality products such as BGA and CSP components, special forced hot air circulation structure system, so that PCB and components are heated evenly and efficiently

  High and fast heating speed.

3. The air transport system adopts advanced air duct design, uniform air transport and high heat exchange efficiency.

4. The preheating zone, welding zone and cooling zone are heated independently up and down, cycled and temperature controlled independently. The temperature difference between adjacent temperature zones can reach up to 100℃.

  The temperature and wind speed of the zone can be adjusted independently.

5. The power of each temperature zone is properly matched, and the temperature rises quickly, from room temperature to set working temperature about 15 minutes. And has fast and efficient thermal compensation performance.

6. Modular design, compact structure, convenient maintenance.

7. With independent roller structure and topping support, combined with stainless steel mesh belt, it runs smoothly and is durable and wear-resistant. Long-term use is not easy to change.

Installation and use conditions

  <1>Working voltage: AC380V±10%; three-phase five-wire system; 50Hz, can also be connected to 220V.

  <2> Ambient temperature: 5～40℃;

  <3>Relative humidity: not more than 85%RH;

  <4>Power switch: air switch

  <5>Installed power: 18KW

  <6>The ground is flat, and there should be no strong vibration and corrosive gas in the surrounding environment.

Reflow soldering process

Printed board preparation-solder paste preparation-printing solder paste-mounting post-chip components-through reflow soldering-soldering completion-testing-shaping and trimming-completion

Company strength

Workshop shots

Item display

About delivery
All the equipment of the company includes freight and distribution fees, excluding the cost of going upstairs, depending on the distance, choose logistics consignment or door-to-door delivery
On-site installation and commissioning
The company is responsible for distribution, and there are professional engineers on-site installation, commissioning, training, or guidance and assistance through remote video or telephone
1 year warranty
After-sales promises that all parts of the wave soldering machine are guaranteed for one year, except for human problems
Lifetime service
The company provides life-long maintenance, paid service, only labor costs and material costs



Preparation before installation and commissioning
1. Door-to-door time: within 2 working days after all the following work is ready, special circumstances will be discussed separately
2. Logistics transportation: After receiving the goods, customers who choose logistics transportation must first place the equipment and prepare all the following materials
3. Home delivery: Customers who choose home delivery need to reserve space in advance to prevent equipment and prepare all the following materials
Material preparation:
1. Power connection: lead the power cord to the device according to the requirements of the device, leaving a length of more than 3 meters to connect to the device
2. Air connection: If there is an air source in the workshop, lead the air pipe to the side of the equipment, leaving a length of more than 3 meters to connect to the equipment. If there is no air source in the workshop, you need to prepare the air compressor in advance and prepare the necessary accessories
3. Tin bar: Prepare enough tin bars in advance according to the tin capacity requirements of the equipment, so that the master can directly melt the tin for on-site trial welding test and training when he comes to the door.
4. Flux: the flux that needs to be used when the product is ready for trial welding. At least 2 liters required for testing
5. Cleaning agent: the nozzle used to clean the flux, temporarily not used, it will not affect the debugging