Soldering is a process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a relatively low melting point. Soft soldering is characterized by the melting point of the filler metal, which is below 400 °C (752 °F).[1] The filler metal used in the process is called solder.

Soldering is distinguished from brazing by use of a lower melting-temperature filler metal; it is distinguished from welding by the base metals not being melted during the joining process. In a soldering process, heat is applied to the parts to be joined, causing the solder to melt and be drawn into the joint by capillary action and to bond to the materials to be joined by wetting action. After the metal cools, the resulting joints are not as strong as the base metal, but have adequate strength, electrical conductivity, and water-tightness for many uses. Soldering is an ancient technique mentioned in the Bible[2] and there is evidence that it was employed up to 5000 years ago in Mesopotamia.[3]

Contents [hide]
1 Applications
2 Solders
3 Flux
4 Basic soldering techniques
4.1 Electronic components (PCBs)
4.2 Pipe soldering
4.3 Mechanical and aluminium soldering
4.4 Stained glass soldering
5 Solderability
6 Desoldering and resoldering
7 Lead-free electronic soldering
8 Soldering defects
9 Tools
10 See also
11 References
12 External links

[edit] Applications

Small figurine being created by solderingOne of the most frequent applications of soldering is assembling electronic components to printed circuit boards (PCBs). Another common application is making permanent but reversible connections between copper pipes in plumbing systems. Joints in sheet metal objects such as food cans, roof flashing, rain gutters and automobile radiators have also historically been soldered, and occasionally still are. Jewelry components are assembled and repaired by soldering. Small mechanical parts are often soldered as well. Soldering is also used to join lead came and copper foil in stained glass work. Soldering can also be used as a semi-permanent patch for a leak in a container or cooking vessel.
Air Compressors Chip Mounting Machine
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Lead-free Hot Air Reflow Oven, CY-8CR
Options 1. Lead-free soldering capability 2.100% forced air convection 3. PLC controlling system 4. Profiling accessory kit 5.Individual heating system & cooling system 6.Flux collection system ...

Dongguan Chuangyi Electronic Equipment Co., Ltd.

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4x5mm Reflow Soldering Motor, 4X5ZKK02
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SMD Power Inductors
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3X6 tact switch, KFC-809A
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Goodwill Enterprises

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Smd Chip Inductor, 3
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Welding Machine, Reflow Oven, Infrared Ic Heater T962a, T-962A
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Welding Machine, Infrared Ic Heater T962, T-962
progress observed on LCD display. This self-contained reflow station allows safe soldering techniques ...welding machine The T962 is a micro-processor controlled reflow oven. The device is powered ...

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Conveyors/Board Handling
Component Counters
Depaneling
Dispensers
Cleaners - PCB
Dross-B-Gone
Dry Boxes
Hot Bar Soldering
Lead Forming
Manual Placers
N2 Waves & Ovens
Nitrogen Generators
Pick & Place
Pre-Owned
Reflow Ovens
Rework Equipment
Selective Soldering
Solder Pallets
Solder Paste
Solder Paste Mixers
Stencil - Cleaners
Stencil Printers
Thermal Profilers
Turnkey Lines
Wave Solder
Wave Solder Bench-Top
Warranties & Service

One guideline to consider when soldering is that, since soldering temperatures are so low, a soldered joint has limited service at elevated temperatures. Solders generally do not have much strength, so the process should not be used for load-bearing members.SMD Rework & Assembly
More Models >> 1 2 3
MODEL :DES-MOD-01, DE-SOLDERING STATION
MODEL: DES-MOD-01 : Is a versatile Rework, Repair and De-soldering system suitable for all type of populated (single sided, PTH, Multilater & Hybrid) PCB assemblies and components.
The system comprises of a Temperature controlled solder work station, with a four-point-rest work platfonn and a set of Dip-pot nozzles to suit different de - soldering needs.
A conventional tweezer or a miniature nose-pliar can be used to pull-out the desoldered component once the solder melts and reflows.
Separate Dip-pots with suitable nozzles are provided to De-solder/Rework on 8, 14, 16 20, 28 and 40 pin ICs and IC Bases. Even SOTs and CER-DIP ICs can be De-soldered with suitable selection of De-soldering nozzles.
The solder work station can be put to other uses when not being used for de - soldering-some of the applications are: Dip-soldering small PCBs, tinnning component leads and tinning stripped ends of multistrand wires.
Features
Processable PCB dimensions 350 x 450mm
Processable components All Upto 64 Pin DIPs (Others on request)
Solder Temperature 200-300?C
Optimal Temperature 280
Temperature control By AC Phase Angle Control/Thennostat.
Power consumption 300 Watt
Desoldering Cycle Time 2-3 sec.
Production Rate 360 Operations/Hr
Number of DIP-Pot-Nozzel
Assemblies Supplied 3 Nos.

MODEL: SMDR-10, AUTOMATIC SMD REWORK STATION
MODEL: SMDR-10 is a completely automatic rework (soldering & desoldering) station for SMD PCB assemblies, with the most advanced features integrated in its design. The station employs an Infra - red, focussed beam reverse PCB preheater to preheat the SMD PCB assembly, prior and during the rework operation.
A special triple parametric control system (Heat, Air flow rate and Heat timings) is used to heat and control the temperature of the hot air (Used in the system as a source of heat.). It provides a very accurate and stable temperature control accuracy in the usable range of 100-4000C.
The heat gun is lowered automatically by a servo-Controlled motor and timed by a precision timer (for soldering and desoldering cycle time.)
With all operating parameters being controlled automatically, the rewok station is independent of operator's skill and is highly ergonomic. Operator has both his hands free to carry out the PCB placement, component removal and positioning during the rework operation.
A set of nozzle adaptors is provided to handle different device type and 0utlines, viz. SMD, SOT, SOIC, PLCC, etc.

Some examples of solder types and their applications include tin-lead (general purpose), tin-zinc for joining aluminium, lead-silver for strength at higher than room temperature, cadmium-silver for strength at high temperatures, zinc-aluminium for aluminium and corrosion resistance, and tin-silver and tin-bismuth for electronics.