Special Soldering
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Special Soldering ■ Laser Soldering Iron Soldering Induction Soldering Miniwave Soldering Selective Dip Soldering

Connections by soldering are conductive and firmly bonded. The soldering temperature is far below the melting temperature of the material. Therefore, soft soldering is the dominant connection method in electronics. A characteristic of a solder joint is the intermetallic compound. In this thin layer the base material and the solder form an alloy and build a firm connection. solder brass CuZn.. silver Ag.. tin-lead Snl 0Pb90 tin-lead-free Sn.. tin-lead Sn63Bb37 tin-bismuth Sn42Bi58 Selection of Processes We have the right system for you Laser soldering Iron soldering Induction soldering...

Concept In contact-free heating by radiation good absorption behavior at the soldering point is important. The proportion of the absorbed radiation is highest with short wavelengths. High power diode lasers are particularly suitable with wavelengths of 808nm, near visible light. Other types of lasers such as ND: YAK lasers and C02 lasers have a longer-wave radiation. In laser soldering, the solder can be supplied in wire form with flux core, in form of solder paste or a solder preform. Also melting of existing solder deposits is possible. Diode lasers for soldering applications should have...

cycle time: 2,2 s per soldered joint preheating of the ceramic substrate with hot air cycle time: 2,5 s per soldered joint preheat station with hot air temperature control with pyrometer Rain sensor System DescriptionDiode Laser To be able to focus the energy required up to 120 W on a small solder joint, the laser beam must be bundled at the focal spot (light spot). This is only possible with an elaborate optic system. The newly developed diode laser solders with six laser beams. With the laser soldering tool LLW03 the laser beam can be optimally adapted to the geometry of the joint to be...

The most important part of automatic laser soldering is, in addition to the laser source, the soldering tool. It is particularly compact with the laser source integrated. Essential components of the soldering tool are: Integrated CCD-cameras for setting up and visual monitoring of the soldering process. In addition, a pyrometer can be installed for monitoring the temperature (optional). Electrically driven solder wire feeder with sensor for coil end and pulse generator to monitor the feed amount. The feed amount and feed speed are programmable. "Air Knife” on the lens cover of the optics...

For decades the state of the art tool for soft soldering has been the soldering iron. This process can be automated with respect to specific criteria. Such a criteria is the defined contact pressure on the solder joint of the tip in the horizontal and vertical direction in order to guarantee a constant heat transfer. For this purpose, Wolf developed the patented "Quick-Step Process” for soldering tip positioning. The flux supply with a soldering iron is via one or more flux cores in the solder wire. The solder joint is heated by the soldering tip and the solder is led to the solder joint....

Mass soldering is not always possible on printed circuit boards and other electronic components (wave soldering, reflow soldering). Some solder joints have to be separately soldered. These soldering tasks can be performed automatically and reliably with a soldering iron. By using handling systems with up to four programmable axes the soldering iron is flexible and suitable for a variety of soldering tasks. Preheating of the soldering joint by pre-tinned soldering iron The “heart” of automatic iron soldering machines is the A complete assortment of precision soldering tips is available,...

The principle of HF-induction heating is that an alternating current of high frequency flows though a one or multi-turned coil (inductor). This inductor builds in its vicinity an alternating electromagnetic field. If an electric conducting component is brought into this electromagnetic field, then voltage is induced therein, which generates an alternating current. After the Joulsche Law (Q=J2xRxt), this results in heat being generated in the surface area of the component. The coil, known as the inductor, must be water cooled. The galvanic isolation ensures the highest level of security for...

Induction Soldering The following components are required for induction soldering: Inductor (induction loop) High frequency power unit Cooling aggregate Process control with control surface Solder wire feeder (if required) Suitable workpiece holder Infrared temperature sensor (pyrometer) for temperature monitoring Process Workflow Step 1: Preheating Heating the solder joint to preheat temperature. Contact-free temperature measuring with a pyrometer, for regulating the preheating temperature. Step 2: Solder feeding Movement of the solder wire feeding tube to the solder joint. The next step...

Induction Soldering Advantages ...over iron soldering quicker, contact-free heating absolute constant energy input no soldering tip wear ...over flame soldering no burning of the flux absolute constant energy input no variation in the energy density of the flame

Selective soldering is derived from wave soldering. Whereas Miniwave soldering can be divided into two procedures: by conventional wave soldering the complete circuit board is soldered, only definite areas come into contact with solder by selective soldering. Miniwave internal flow The work piece is dipped into a ''stationary" miniwave. In order that the emerging oxide film breaks away at the surface, the solder wave runs inside the nozzle. As a result, this prevents the solder on the exit nozzle from cooling when soldering. In order to reduce oxide formation at the nozzle and to improve...

Miniwave Soldering cycle time: 13,5 s cycle time: 1,5 s per for 10 solder joints solder joint System Description / Process Workflow Step 1: Preheating Preheating can be done by hot air or radiation. With the first alternative hot air heated between 300-400°C is blown onto the work piece. With suitable high-power infrared radiators, the work piece can be heated very rapidly within a few seconds. Through the use of masks, the heating can be restricted to individual areas. The temperature is controlled in each case contact-free through the use of a pyrometer. Step 2: Fluxing Spray fluxing...