1. Process characteristics: Most copper alloys have large shrinkage, that the solidification sequence should be controlled during casting to stop the formation of shrinkage cavities. Tin bronze is well oxidized within the liquid state, that the flow shouldn’t be interrupted during pouring. At the identical time, the pouring system should be ready to prevent the splashing of the molten metal, in order that the molten metal can flow smoothly. the underside pouring pouring system is commonly employed in production. Tin bronze Z is suitable for metal mold casting, because the cooling rate of the metal mold is fast, which narrows the solidification zone of the molten metal, and isn’t easy to provide shrinkage porosity, and also the internal structure of the casting is dense.
2. The smelted steel alloy of cast copper alloy is definitely oxidized within the liquid state, and therefore the formed oxide is dissolved within the copper to cut back the mechanical properties of the alloy. Like aluminum alloys, copper alloys are generally melted in a very crucible furnace, in order that the copper liquid doesn’t directly contact fuel and air, so on reduce the oxidation and loss of the metal and keep the metal pure. so as to stop the oxidation of copper, fluxes like glass and borax should be added to hide the copper liquid when melting bronze. Since zinc in brass itself may be a good deoxidizer, there’s no must add flux and deoxidizer when melting brass.
3. Classification: Divided into two categories: cast brass and cast bronze; cast brass is further divided into ordinary brass and special brass; cast bronze is further divided into tin bronze and special bronze alloy. Copper alloy is an alloy formed by adding one or several other elements to pure copper because the matrix. Pure copper is purple-red, also referred to as copper. The density of pure copper is 8.96, the freezing point is 1083℃, and it’s excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance.
4. it’s mainly accustomed make electrical equipment like generators, busbars, cables, switchgear, transformers, etc., in addition as heat-conducting equipment like heat exchangers, pipes, flat-panel collectors for solar heating devices. Commonly used copper alloys are divided into three categories: brass, bronze and cupronickel. Brass may be a copper alloy with zinc because the main additive element, which includes a beautiful yellow color and is collectively observed as brass. The copper-zinc binary alloy is named ordinary brass or simple brass. Brass with quite three yuan is named special brass or complex brass. Brass alloys containing but 36% zinc are composed of primary solid solution and have good cold working properties. for instance, brass containing 30% zinc is commonly wont to make bullet casings, commonly called bullet casing brass or seven-three brass.
Post time: Jun-13-2022