Die casting?is a?casting method of?die forging.?Die casting die forging?process is a process?to complete the?special die casting die forging.?Its basic process is:?the cavity of metal?liquid is?low or high speed?casting?into a mold,?mould have activities of the cavity surface,?the?metal liquid cooling process pressure forging,?can eliminate?the blank of shrinkage cavity shrinkage,?also make the blank internal organization achieveforging state of crushing grain.?Blank comprehensive mechanical performance wassignificantly improved.?In addition,?the process out of the blank,?the outer?surface finish to achieve 7?(Ra1.6),?such as cold?extrusion process or?machined out of the surface,?with metallic luster.?So,?we will?die forging process?called "limit forming process,"?than?"shaping without?cutting,?less headroom?process"?a step further.?Die forging process?has another advantage?is,?in addition?to the production of the traditional?casting?materials,?deformation?alloy,?forging?alloy?with?it also,?produce the structure is very complicated parts.?These?alloys?include:?aluminum?alloy,?aluminum alloy?(such as LY11,?LY12,?6061,?6063,?LYC,?LD etc.).?The tensile strength?of these materials,?nearly one?times higher than that of conventional?casting?alloy,?foraluminum alloy wheel,?frame,?hope that the impact of?materials for the production ofresistance of components?with higher intensity,?has?more positive meaning.
A?brief introduction of?pressure casting,?die casting?or?casting,?is one kind of?the molten alloy liquid pressure into indoor,?to?the high speed filling steel mold cavity,?andmake alloy liquid?and the formation of?casting?solidification?under pressure.?The main characteristics of?die?casting method?is?different from other?high pressure?and high speed.
①The?liquid metal?is?under pressure to fill the cavity,?and?solidification?at higher pressures,?common?pressure is 15?100MPa.
②The?metal?liquid to the high speed filling cavity,?usually in the?10?- 50?m / s,?and some also?can be more than 80 meters?/?seconds,?(through the?gate?into the?cavity of theline speed?-?ingate speed),?so the?liquid metal filling time is very short,?about 0.01?- 0.2 seconds?(depending on?the?size of?castings?different)?inside can fill the cavity.
Die casting machine,?die casting alloy and die casting mould?are the three elements?of die-casting production,?are indispensable.?The?casting?process is the three elements organically?be used comprehensively,?enabling?stable?rhythmically and efficientproduction of appearance,?good internal quality,?size?consistent with?requirements of the qualified casting?pattern or agreement,?even the high quality casting. |
