The most cost-effective off-line option for wave soldering

First, the characteristics of selective wave soldering

● Online conveying system: rail conveying method, conveying direction (left → right, or right → left) is optional.

● Flux selective spray mode, spray path is controlled by program; Adjustable spray pressure and flow rate; With automatic rosin adding system; Equipped with exhaust system, flux collection system.

● Preheating system: hot air heating method, hot air temperature, wind pressure, preheating time can be adjusted.

● Welding system: selective welding mode, tin furnace relative to PCB move, according to the program set welding path and welding time; Wave peak height and tin furnace temperature can be adjusted; Lightweight tin furnace, equipped with tin furnace liquid level detection tin line automatic adding device.

● Nitrogen system (option) : Nitrogen system, nitrogen consumption is about 5 cubic meters/hour. Save heating time and flux amount, reduce virtual welding, cavity rate

● Control mode: PLC+ touch screen control.

Second, selective wave soldering process

● Can be used for bare plate welding, fixture welding.

● According to PCB type, the fastest production beat is 25S/ spell; It is close to 1/3 of wave soldering, but about 3 times faster than single point selective welding.

Third, the advantages of selective wave soldering

● Solder penetration rate: breaking through the limitations of traditional welding equipment by the peak height and flux coating, the tin penetration rate is close to 100%.

● Solve the defects of false welding, missing welding, welding slag pollution PCB and so on: compared with traditional equipment, the activity of tin in the welding part is greatly enhanced, and there is no oxide layer cap on the surface.

● Selective process: selective spray and selective welding methods, flexible call of process files, improve the flexibility and pertinency of welding process, easier to change the line.

● Power saving: selective wave soldering starting power 4.5KW, single-phase distribution, distribution power is only 15% of ordinary wave soldering; The normal working power is about 2KW, and the power consumption is only 20% of the ordinary wave soldering, which reduces the air conditioning load.

Flux saving: Due to the selective spraying method, the flux consumption is only 30% of the traditional wave soldering.

● Saving tin capacity: tin furnace capacity of 16kg, due to the small amount of tin, help customers to save fixed asset investment.

● Low oxidation capacity: without nitrogen, the oxidation capacity of a single shift is about 0.5KW; When nitrogen is added, the oxidation amount of each plate is about 0.1KW.

● Surface cleaning: due to the use of selective spraying and welding methods, flux and solder only act on the welding department, other departments to keep clean;

● Safety: Safety of equipment operation and maintenance: maintenance space, small tin stove, safety measures, etc., to ensure the safety of equipment operation and maintenance, effectively protect the safety of staff.