19/11/2013 Industrial Equipment
As we all know,both forging and casting process are widely used now.We may heard the cast iron pump casting,alloy castings,or forged valves.However,a few people may still feel confused for these two processes.They have something in common.Meanwhile,they are different in the manufacturing process, types,equipments,application range,quality of forming workpieces as well as production cost.
As for manufacturing process,doubtlessly, their purpose is to shape the workpieces.Metal forging technology is a process that solid metal is shaped by virtue of deformation.On the contrary,casting process requires the molds to get a desired shape.Moreover, metal has been melted.Molds used in casting technology can be made of various materials, such as sand, ceramic,wood, etc.
Forging technology can be divided into free forging during which solid metal will be shaped through the impact or the press as well as die forging,which refers to two types of die forging: open-die forging and no-flash dies forging.In terms of materials of molds,there are also all sorts of casting technology in use now, including ceramic casting iron casting,die casting,permanent mold casting,as well as sand casting.Equipments applied in casting are hot chamber and cold chamber machine.Cold chamber casting maching-with the help of hydraulic piston at high pressure,molten metal is forced into the die.Hot chamber casting machine–it needs oil or gas powered piston to force the molten metal into the die. Likewise, forging technology requires several machines to finish every task,such as press forging,upset forging, automatic hot forging,roll forging machine,etc. Application range In contrast to forging process,the casting process is more suitable for creating complex or large parts.For instance,aluminum sand casting parts often are applied in art,jewelry,automobile components,and other facets.
Quality of forming workpieces:
By means of different technologies, features of workpieces are not the same.Generally speaking,workpieces produced by forging technology are usually stronger lighter and more reliable than casting process, because of tight grain structure.
As a rule of thumb,casting technology costs less than forging technique.Production cost usually refers to the equipments,demand of metal,maintenance,etc.Casting workpieces likesand casting parts provide less production cost,as it needs less maintenance and less expense on molds -materials used in molds can be waste materials.While,forging process is generally more expensive, because this process requires advanced technology and machinery to create the required amount of pressure.Although they work well on their own application ranges there is no denying that both of them are very important and popular now.
aluminum castings: http://www.fotaichina.com/products/p304.html
After decades of development,Chinese foundry industry has made remarkable achievements.China's casting productions reached 42.5million tons in 2012,ac...