Soldering a fine copper wire to a connector assembly
Hermetically sealing a fiber optic cable in a kovar ferrule
Soldering Fiber Optic Cable to Fiber Ferrule with Glass Preform
Soldering a steel funnel to flex spout
Hermetically sealing a fiber optic cable in a kovar ferrule
Soldering windows to time indicator housings
Soldering a copper chip to a silver dipped brass RF attenuator
Soldering wires onto three connector tabs on a three position wall socket plug
Soldering 3 copper spacers to circuit board simultaneously
Soldering A Fiber Optic Housing For Hermetic Sealing
Soldering A Gold-Plated Ferrule To A Fiber Optic Cable
Soldering A Kovar Ferrule To A Fiber Optic Cable (Hermetic Sealing)
Soldering Glass Feedthroughs On A Kovar Housing For Hermetic Sealing
Soldering Steel Connectors To A Brass Block
Soldering Electrical Flex Circuits
Soldering A Car Radio Antenna
Soldering Solar Flex Circuits
Soldering three fuse caps simultaneously
Solder three brass connectors in a solar panel junction box
Soldering a nickel plated steel cover onto a nickel plated steel EMI filter housing
Soldering RF connectors to circuit board
Soldering two copper wires to a copper buss bar
Soldering an LED assembly to an aluminum spotlight housing
Soldering connector to wire harness
Soldering two connectors simultaneously to gound plate
Soldering fabric to kovar tip assembly
Soldering brass and copper (anesthetic medical equipment)
Soldering circuit board posts with solder preforms
Soldering Brass end cap on heat exchanger
Reflowing an area on a circuit board
Soldering of satellite antennas
Soldering wires to a connector
Soldering Co-axial Wire Assemblies
Soldering a copper tab on a speaker ring
Soldering a Stainless Steel Tube to Cylinder
Soldering Steel Housing
Soldering A Cellular Phone Antenna
Soldering Copper Tubing For An Ice Machine Evaporator Assembly
Soldering A Brass Bellows End Cap Assembly
Soldering A Brass Slip Ring To A Copper Wire Assembly
- Overview
- Using Induction
- Setup
- Materials
- Problems
- Solutions
Soldering is the process of joining metals by means of alloys that melt between 350ºF-700ºF. The strength of the joint depends on the chemical composition and cleanliness of the surfaces to be joined.
Soldering produces liquid- and gas-tight joints quickly and at low cost. Most soldering applications are carried out in air, with the flux acting as a barrier to surface oxidation and interaction with the atmosphere. It is a convenient and economical way to produce joints when more complex joining machines are not available or cost-effective.
Solid state RF induction heating is very well suited for soldering applications in a production environment. Heat can be applied to specific regions of a part in a very controlled and precise manner. Induction heating is well suited for production line applications (like fiber optic ferrule assemby) because of low time-to-temperature, high levels of repeatability and non-contact, clean heating.
Induction systems typically used for soldering range from 1 to 20 kW, depending on part and process requirements.
Flux is applied first to the bonding surfaces and then heat is applied to the joint area. The temperature required is just above the melting point of the solder. The solder is allowed to flow in the joint. After reflow, the solder is allowed to cool naturally and re-solidify.
Metal: Iron, nickel, copper, lead, tin, zinc, aluminum
Solder: Generally lead and tin alloys·
Flux: Necessary to rid the surface of the metals to be joined of oxides, to promote wetting and obtain intimate contact between the solder and base metal. There are different forms of flux: corrosive, intermediate and non-corrosive. Corrosive (Acid) flux cleans the surface well and is good for copper, low carbon steel, brass and bronze soldering. However, it is difficult to clean off after the process. Intermediate fluxes contain organic compounds and decompose at soldering temperatures. They are suitable for all materials that are solderable with mild fluxes. Non-corrosive fluxes are rosin-based. They are a good choice for electronic and critical soldering applications.
Heat source: fast, precise heating is best.
Low unit strength.
Little resistance to fatigue
Limited to service temperatures below 300ºF.
Cleanliness of the joint surfaces is critical.
Both metal surfaces that are to be joined need to come to temperature at the same time.
If the temperature is too high, a strong joint cannot be created.
Instead of stick-feeding the solder, use a paste or preform solder that is placed in the joint areas before heating