By Klas Weman, Gunnar Linden
ISBN-10: 0849391121
ISBN-13: 9780849391125
MIG (metal inert gasoline) welding is without doubt one of the key procedures in commercial production. The MIG Welding advisor presents accomplished, easy-to-understand insurance of this common approach. It offers readers with various issues from the alternative of protecting gases to filler fabrics, welding apparatus, and plenty of useful suggestion. The publication offers an outline of latest advancements in quite a few methods resembling flux cored arc welding, new high-productive tools, pulsed MIG welding, MIG-brazing, robot welding functions, and occupational overall healthiness and safeguard. it really is crucial interpreting for welding engineers, construction engineers, designers, and all these considering commercial production
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Extra resources for MIG Welding Guide
Example text
The first improvement was for single wire and later double wire was also used. The most advanced equipment today uses the laser-hybrid process, a combination of laser and MIG welding. The high productive methods are described completely in Chapter 8. 1 Single-wire methods The productivity of mechanised MIG welding, using conventional solid filler wires, has constantly improved in recent years. A prolonged resistive heating means that the wire stick-out is preheated, thus permitting a higher rate of feed without a corresponding increase in the current.
Wire stick-out. Choice of shielding gas and gas flow rate. Torch and joint position. Torch weaving patterns. Pulsed wire feed. Most of these parameters must be matched to each other for optimum welding performance. The working point must be within the working range or tolerance box for the particular welding situation. The time needed for the adjustment at a typical welding situation is normally short for an experienced welder but the optimisation of a weld for an automated production line may need some effort.
If the current cable, contact tip and gas nozzle are cooled the size and weight of the gun can be reduced. 1 Contact tips The contact tip is the most critical part in the welding gun. It is important that the current is transferred to the wire close to the front end. 18 Welding gun with hose package. 1. Contact tube. 2. Shielding gas nozzle. 3. Trigger switch. 4. Hose package. 5. Electrode. 6. Flexible conduit. 7. Shielding gas hose. 8. Power cable (ESAB). 19 Good electrical contact is achieved thanks to the cast of the wire (ESAB).
MIG Welding Guide by Klas Weman, Gunnar Linden
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