Blast-cutting of the Gate Slot of Huangling Water Gate in Wuhan for Slot Widening and Monitoring of Blasting Vibration 自动装料槽,自动输矿槽武汉黄陵闸闸门槽扩宽爆破切割与爆破振动监控
When current passed through the coil, magnetic force is generated to attract the thimble to exit from the concave slot, and the spring springs down the draw rod to close a valve gate. 线圈有电流通过时,产生磁力吸引顶针退出凹槽,弹簧弹落拉杆,关闭阀门。
For the free-flow plane working gate slot, the hydraulic characteristics are much more complex than the gate slot under pressure flow. 对于闸后为明流的平板工作闸门门槽,其水力特性比压力段内的闸门门槽复杂得多,门槽体型设计尚无规范可以遵循。
Through optimizing gate design, the filling imbalance and flow block phenomena were improved better and the warp deflection was decreased obviously with slot side gate. 通过优化浇口设计方案,采用平缝型浇口注射成型,充填不均现象得到明显改善,零件成型后变形量明显降低,解决了零件成型后翘曲变形过大的问题。
The finite analytical method is employed to solve Reynolds equations and the results of the mean turbulent flow field near the two-dimensional slot of gate are given. 用雷诺方程按有限分析法计算了平面闸槽区附近的平均紊流场&包括平均速度分布,涡量分布和压强分布等。
Estimation of the Incipient Cavitation Number for a Two-Dimensional Slot of Gate 平面闸槽区初生空化数估计
Based on the numerical simulation and real casting experiment, the influence of the slot gate system on the filling and solidification process of the cylindric magnesium alloy casting is studied. 本研究利用数值模拟技术和实际浇注实验研究了缝隙式浇注系统中缝隙宽度、缝隙长度、立筒直径、缝隙形式和冷铁设置等因素对圆筒形镁合金铸件充型和凝固过程的影响。
In this paper, the design methodology of the slot gate system is investigated, the database of the casting process is established, and a CAD system of the low pressure casting process is developed for the cylindric magnesium alloy casting. 本课题研究了缝隙式浇注系统的参数设计规律,并以此结果建立了工艺参数设计数据库,开发了圆筒形镁合金铸件低压铸造工艺CAD系统。
The design technology of plane emergency gate slot form under pressure flow condition is good, but the hydraulic characteristics of plane emergency gate region are different from the plane working gate region under without pressure flow behind the gate. 对于闸后为无压明流的平板工作闸门门槽,其水力特性与处在压力段内的事故闸门门槽相差较大。
Finally, through the study of structural forms of standard gate slot and narrow slit gate slot, the appropriate gate bottom rim patterns are recommended for each type gate slot, respectively. 通过对标准门槽及窄缝门槽的体型研究,分别拟定了适合各自门槽的闸门底缘型式。