Characteristics of Lead-free Wave Soldering Machine
● Adjustable Wave Crest Generator
Over the past decade, the wave crest soldering machines produced domestically and abroad are all of fixed wave crest width. The Wave soldering machine produced by us is the first of its kind of which the wave width can be adjusted within the range of 120mm and 350mm. Our product is solder and power effective and causes less pollution.-Patent No. ZL200420042199.6
●Nitrogen Protection in Parts of Wave Crest Area
Nitrogen is filled within the unique stainless cover that is mounted over the exposed surface of solder. This structure enables nitrogen protection wave crest soldering with lower nitrogen consumption and operating cost. And it also cuts down solder’s oxidizing slag and improves its wettability, saving solder and lowering the rate of defect.
●Closed-loop Control of PCB Conveying Speed
The conveying speed and stability of PCB have a direct bearing on the time of PCB soldering. In the lead-free soldering technics, the technical window of the soldering temperature has become smaller, making the consistency of the soldering time vital. The closed-loop control of the conveying speed is an important means to ensure the consistency.
● Electric Closed-loop Adjustment of the Width of Guide Rail
Short run production of a variety of goods requires electronic assembling production adopt a flexible mode. The easy adjustment of the parameters of wave soldering machines makes it suitable for flexible production. The electric closed-loop can precisely adjust the width of guide rail by simply entering the value and, meanwhile, store the width of PCB in the technical file as technical parameters, which automatically adjust along with the change of technical code of PCB.
●Patented Technology of Three-phase Asynchronous induction Electro-magnetic Pump
The Principle of three-phase asynchronous induction electromagnetic pump is to utilize the 120o phase difference of mutually differed three-phase power supply, to distribute in space and form their respective magnetic field, and their resultant magnetic field is a forward magnetic field. So that in the forward magnetic field, the liquid metallic brazing material cuts the magnetic lines of force and induces current, to form the forward electromagnetic force. The wave crest generator of the electro-magnetic pump is of simple structure without any turning part, it will not be worn so it is free of maintenance. It has capability of audio frequency micro interference vibrating wave overlaying, which increases the ability of soldering and hole penetration. Because what the asynchronous induction pump produces is the straight line pushing force, so the liquid metallic solder does not rotate and the tin bath remains calm, therefore, less oxidized slag will be produced.
●Automatic Control of PCB Spraying
The spraying system automatically tests the length and width of PCB, and its conveying speed.
●Combined Warm Air + Infrared Preheating
Heating by warm air is of large thermal capacity, and can blow away the excessive impregnant on the lower surface of PCB and in the plated through holes. Heating by infrared quartz tube, despite its small thermal capacity, preheats the parts evenly, steadily and rapidly. Prolonged warm air + infrared preheating, drawing upon the advantages of both methods, control each zone separately to achieve even temperatures and little △T.
●Menu Type Management of Technical Parameters
Closed-loop control of preheating temperature, solder temperature, width of guide rail and conveying speed together with automatic spraying allows the technical parameters of PCB to be stored in the technical files of the computer. If the technical parameters are to be changed due to change of PCB, all it takes is to replace the technical code of a file.
