跪求机械制造专业英语翻译

来源：百度知道 编辑：UC知道 时间：2024/05/26 12:16:02
There is much more to casting than selecting a process and making the appropriate pattern .During the past decade ,research and production experiences have provided scientific principles for better casting techniques .Important considerations are the rate at which a mold cavity is filled ,gate placement ,riser design ,the use of chill blocks, and padding.
FILLING THE MOLD CAVITY .the velocity with which the molten metal fills the mold is determined by the cross-sectional area of the gating system and the mold-pouring rate. Too slow a mold-pouring rate means solidification before filling some parts, allowing surface oxidation. Too high a pouring rate caused by too large a gating system causes sand inclusions by erosion ,particularly in green-sand molding ,and turbulence. The minimum cross section in the gating system is called a choke .In the strict sense, the choke is the section in the gating system where the cross-sectional area times the potential linear velocity is at a minimu

There is much more to casting than selecting a process and making the appropriate pattern .During the past decade ,research and production experiences have provided scientific principles for better casting techniques .Important considerations are the rate at which a mold cavity is filled ,gate placement ,riser design ,the use of chill blocks, and padding.
铸造并不仅仅是选择工艺流程和合适的模型。在过去十几年间，对铸造业的研究和生产经验的总结已经使得铸造工艺越来越科学。着重集中在型腔如何灌注，进模口的布置，冒口的设计，冷硬试件的使用，垫模这些方面。
FILLING THE MOLD CAVITY .the velocity with which the molten metal fills the mold is determined by the cross-sectional area of the gating system and the mold-pouring rate. Too slow a mold-pouring rate means solidification before filling some parts, allowing surface oxidation. Too high a pouring rate caused by too large a gating system causes sand inclusions by erosion ,particularly in green-sand molding ,and turbulence. The minimum cross section in the gating system is called a choke .In the strict sense, the choke is the sec