[IE 21] 2.6 - Joining II: Brazing, Soldering, Adhesive

brazing

permanent joining of similar or dissimilar metals or ceramics through the use of heat and a filler metal

torch brazing

[Heating Methods for Brazing] common source of heat for brazing is a gas-flame torch

furnace brazing

[Heating Methods for Brazing] a number of assemblies can be brazed simultaneously in controlled atmosphere

dip (salt bath) brazing

[Heating Methods for Brazing] parts are preheated and then dipped in a bath of molten salt

dip (molten metal) brazing

[Heating Methods for Brazing] the assemblies are immersed in a bath of molten brazing metal

induction brazing

[Heating Methods for Brazing] utilizes high-frequency induction currents as the source of heat

resistance brazing

[Heating Methods for Brazing] used to produce relatively simple joints in metals with high electrical conductivity

soldering

brazing-type operation where the filler metal has a melting temperature below 450°C; joining thin metals

solder metals

[Soldering] generally combinations of low melting-temperature metals

solder fluxes

[Soldering] chemical cleaning agent, flowing agent, or purifying agent; prevents oxides

hand soldering

[Soldering Operations] done with soldering irons or small oxyfuel or air-fuel torches

induction heating

[Soldering Operations] heating an electrically conducting object (usually a metal) by electromagnetic induction

adhesive bonding

a nonmetallic material (the adhesive) is used to fill the gap and create a joint between two surfaces

epoxies

[Adhesive Materials] oldest, most common, and most diverse of the adhesive systems

cyanoacrylates

[Adhesive Materials] liquid monomers that polymerize when spread into a thin film

anaerobics

[Adhesive Materials] one-component, thermosetting, polyester acrylics that remain liquid when exposed to air

urethane adhesives

[Adhesive Materials] large and diverse family of polymers that are generally targeted for applications that involve temperatures below 65°C

silicone thermosets

[Adhesive Materials] cure from the moisture in the air or adsorbed moisture from the surfaces being joined

high-temperature adhesives

[Adhesive Materials] specified when strength must be retained at temperatures in excess of 300°C

hot-melt adhesives

[Adhesive Materials] bond dissimilar substrates