![]() Borax flux Higgins EMMAT101A Engineering Materials and Processes ![]() EMMAT101A Engineering Materials and ProcessesĢ5.3 Soldering and brazing(Higgins25.3) 25.3.2 Brazing Above 450oC. The solder must also provide a mechanically strong joint. The working properties of the adhesive are also important, method of preparation and use, storage-life, drying-time, odour, toxicity, Cost surface preparation large surface area EMMAT101A Engineering Materials and ProcessesĢ5.3 Soldering and brazing(Higgins25.3) 25.3.1 Soldering A solder must 'wet' - that is, alloy with - the metals to be joined, and, at the same time, have a freezing range which is much lower, so that the work itself is in no danger of being melted. EMMAT101A Engineering Materials and ProcessesĢ5.2 Adhesives (Higgins25.2) 25.2.1 Service requirements strength required, temperature range in service resistance to water or moisture. (Loctite 600 series) Chemical reaction with water / UV Light (epoxy) / heat (Bakelite) EMMAT101A Engineering Materials and ProcessesĢ5.2 Adhesives (Higgins25.2) Almost any material, including dissimilar materials, can be joined by adhesives. (Super glue) Anaerobic: Hardens when air excluded. ![]() Curing methods: Cooling – thermoplastic Chemical reaction – 2 part epoxy, polyester Evaporation: Water / solvent2 part curing. ![]()
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