Intro: Tool and die steels are covered in BS 4659:1989,although both American nomenclature and a variety of trade names are also in use. Available in high-quality grades, these specifically-designed steels can be grouped broadly according to their intended applic…

Intro: UM-25 Series Circuit can also match UM-30,UM-40,UM-60 Series HF,RF machines.

Intro: 5. KEY PARAMETERS OF BRAZINGThe quality of brazed joint depends strongly on the combination of filler and base materials and the processing conditions that are used. Other factors which influence the joints are condition of the solid surfaces i.e. nature o…

Intro: Induction Heating was first noted when it was found that heatwas produced in transformer and motor windings, as mentioned in theChapter “Heat Treating of Metal” in this book. Accordingly, the theory ofinduction heating was studied so that motors and tran…

Intro: Selective hardening is applied because of one or more of the following reasons:(1) Parts to be heat-treated are so large that conventional furnace heating and quenching becomeimpractical and uneconomical - examples are large gears, large rolls and dies;(2)…

Intro: High-level surface heating of a thermo technically massive body, when the cooling of the surface to be hardened happens due to abstraction of heat into the body so that the hardening medium is not required, is of both practical and theoretical interest. Ti…

Intro: All IH (induction heating) applied systems are developed using electromagnetic induction whichwas first discovered by Michael Faraday in 1831. Electromagnetic induction refers to the phenomenonby which electric current is generated in a closed circuit by t…

Intro: Manufacturing of self-bearing insulated cable includes the operation of heating of continuously moving aluminum conductons to temperature 80-120 C prior to application of polyethylene isolation.

Intro: Simultaneous HeatStaking of ThreeSteel InsertsThere are many plastic moldingapplications that require anassembly with two or threeinserts. By simultaneouslyheating the inserts with inductionin a multi-position coil, theinserts can be pushed into thepart at…

Intro: IntroductionSolid state converters for induction heating are built with different types of switches depending onfrequency range: thyristors for frequencies up to about 10 kHz, IGBTs up to about 100 kHz andPowerMOS up to about 400 kHz. IGBTs have several st…