作业帮急求一段英文（关于铸造方面的）Squeeze casting is a process which involves the solidi-fication of a molten metal in a closed die under animposed high pressure.Other terms used to describethe same or similar processes are liquid metal fo
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/16 10:53:56
急求一段英文（关于铸造方面的）Squeeze casting is a process which involves the solidi-fication of a molten metal in a closed die under animposed high pressure.Other terms used to describethe same or similar processes are liquid metal fo
急求一段英文（关于铸造方面的）
Squeeze casting is a process which involves the solidi-
fication of a molten metal in a closed die under an
imposed high pressure.Other terms used to describe
the same or similar processes are liquid metal forging,
extrusion casting and pressure crystallization.The
high applied pressure,which is several orders of mag-
nitude greater than the melt pressure developed in
normal casting processes,keeps entrapped gases in
solution and squeezes molten metal from hot spots to
incipient shrinkage pores.As a result,the porosity in
a squeeze-cast component is almost eliminated.Fur-
thermore,due to the elimination of the air gap at the
liquid-mould interface by the applied high pressure,
the heat transfer across die surfaces is enhanced,which
increases solidification and cooling rates.Thus,su-
perior mechanical properties of the casting resulting
from the pore-free fine microstructure are aEhieved in
squeeze-casting processes.
急求一段英文（关于铸造方面的）Squeeze casting is a process which involves the solidi-fication of a molten metal in a closed die under animposed high pressure.Other terms used to describethe same or similar processes are liquid metal fo
模压铸造是在密闭的金属模环境里对熔融金属施加强高压使其凝固的一种工艺.用来描述相同或相似的工艺的其他术语有液体金属锻造,挤压铸造,和压力结晶.这种高压是比正常铸造工艺中的熔体压力产生的强度更大的一种工序,它能使保持闭气溶解和把熔融金属从过热点到初期缩孔进行挤压.因此,模压铸造组件的多孔性几乎是不存在的.此外,由于施加的强高压使液模界面不存在空气间隙,模表面传热得到了加强,由此增加了凝固和冷却的速度.因此,在模压铸造工艺中由于无孔微结构的实现从而显现出了模压铸造的优越性能.