1.The test results show that the pneumatic milling process not only can solve the milling technology with big particle size of UO 2 powder and environment contamination during milling operation, but also can reduce the time of ADU reduction, and the UO 2 powder after reduction by kilning and without stabilizing and sieving can be directly introduced into milling device for pneumatic milling.
研究结果表明 :采用该技术 ,不仅能够较好地解决大颗粒UO2粉末的粉碎技术和环境污染等问题 ,同时还能进一步缩短重铀酸铵 (ADU)脱氟还原的工艺过程。
2.Disigning coolant channel on the firebox of liquid rocket engine to loxodrome(equal-angle helix) groove can improve firebox coolant capability greatly.Because the width dimension of loxodrome groove is narrow and the depth is deep,some machining methods are incapable,such as end-milling or electrochemistry.According to the peculiarities,a CNC disk-cutter-milling method which is composed of five motion axes with four simultaneously interpolated ones is researched.Because most firebox generatrix is composed of complex curves,it is very difficult to get CNC cutting program with manual means.In order to deal with the problem,the loxodrome mathematics model is studied,and an auto-programming software system is developed.The software system can generate CNC cutting program of loxodrome on many kinds of turned surface.The constriction-distension segment of firebox is the most representative workpiece.The sharp changing of its generatrix slope makes loxodrome milling difficult.With the theory analyzing and practice cutting experiment,some applied techniques,which include milling mode and direction,choosing cutter diameter and cutting start point setting,are developed.Adopting the technology above,tens regular workpiece have been manufacturing.The two-year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method.The developed technology is also worth to be referenced to other similar workpiece.
将液体火箭发动机燃烧室的冷却通道设计为斜航线(等倾角螺旋线)槽形,可以大幅度改善燃烧室的冷却性能.斜航线冷却槽的槽宽尺寸较小而槽深尺寸较大,所以无法使用棒铣刀铣削、电化学等加工方式.针对这些特点,提出了五轴控制、四轴联动的数控片铣刀铣削加工方法.由于燃烧室外表面的母线轮廓复杂,手工编制数控加工程序难度大.为了解决数控加工程序的编制问题,研究了斜航线的数学模型,开发了自动编程软件系统.使用该系统,可以生成多种母线轮廓回转体外表面上的斜航线数控加工程序.燃烧室收敛-扩张段的母线斜率变化大,加工难度大,是斜航线冷却通道加工的最典型工件.经过理论分析和实际切削实验,研究了针对该类型工件的片铣刀直径选择、铣削方式和方向、刀具调整和起刀点的设置等多项实际的加工方案.采用上述的一系列技术,已经成功地加工了数十个合格工件.经过两年多的实际生产过程应用,验证了所开发的斜航线冷却通道加工方法的正确性和可行性.这些加工技术的研制成功,对其他相似类型零件的加工亦具有参考意义.
3.The company cuuently possesses more than 70sets of equipment such as 200 digital display boring an milling machine, 160 numerically-controlled boring and milling machine (internationally advanced equipment), 130 boring and milling machine, 8M milling planer, 6M open sided planer, numerically-controlled processing center and 100Tcrane.
公司拥有200数显镗铣床、国外先进设备160数控镗洗床、130镗铣床、8米龙门铣床、6米单臂刨、数控加工中心、100T天车等共70余台设备。
4.In this paper a wood horniness alloy milling cutter CAD system is developed, the wood horniness alloy milling cutter(WHAMC) CAD system carries out the parameters input from the Auto CAD parameters programs, outputs the accessory papers of wood horniness alloy milling cutter quickly by optimizing, then directs the manufacture.
本论文开发研制的木工硬质合金铣刀CAD系统,实现了通过Auto CAD参数化程序读取用户参数数据,经过优化计算,自动生成木工硬质合金铣刀的零件图,对指导铣刀的生产,具有重要的实际意义。
5.The rock texture，mineral occurence feature，ore electronmagnetic milling and applied possibilities in ceramics and glass of the jadeite metamorphic aegirine-augite nepheline syenite in Suizhou，Hubei were studied.The results show that the ore deposit combines the advantages of mining and milling，and the finished ore by single electronmagnetic milling may be fully utilized as the raw materials for ceramics and glasses.Meanwhile，another important fact is that the compositon with 90 percent raw ore may be manufactured into the wall and floor tiles with glaze, which was affirmed by a lot of experiment research.
随州硬玉质变霓霞正长岩的岩石组织结构、矿物赋存状态、矿石可选性和玻璃陶瓷原料应用试验研究表明：该资源具有易采易选两大优点，矿石经单一磁选的精矿可作玻璃和陶瓷的原料；同时已反复试验证实该资源可烧成原矿用量达90％的釉面墙地砖。
6.after 100 h ball milling,the sample became a solid solution with bcc structure; after 200 h ball milling,the diffraction peak of Ni almost disappeared and the isotropic grains with D_(min) achieved,which was mainly attributed to the dislocations and disclinations of the nanocrystalline bcc FeNi suffering from severe plastic deformation by ball milling.
球磨100 h时,样品以bcc结构的FeNi合金为主,球磨200 h后,样品中fcc结构Ni特征峰几乎消失,FeNi纳米晶达到最小粒径的平衡值,~8 nm。 高能球磨过程中,晶界区域的层错缺陷是合金化和纳米晶形成的重要因素。
7.After the structure analasis of powders at different milling time,it showed that nanocrystal α Fe(Si)Solid solution(bcc)was formed during the milling of Fe 75 si 25 powders,the lattice spacing and grain size of α Fe(Si)decreased with increase of milling time.
对球磨不同时间粉末的结构分析和组织观察表明：Fe75Si25粉末经球磨形成具有bcc结构的纳米晶α固溶体，此α固溶体的晶粒尺寸和晶格常数随球磨时间的延长而减少。
8.Milling system: cracker, muller, milling machine, conveyor, hoist, material house, fluidized bed furnace, helix mixing blade, ripe power house, static dust catcher and shaking motor.
（四）制粉系统：由鄂破机、粉碎机、磨机、输送机、提升机、生料仓、沸腾炉、螺旋搅刀、熟粉料仓、静电除尘器及震打电机组成。
9.It is mianly equipped with rice hulling machine for milling unpolished rice into polished rice and milling polished rice from rough rice by one time and is widely suitable for rice mills in urban and rural areas.
主要与砻谷机配套、将糙米碾成白米，也可将稻谷一次碾成白米，广泛适用于城市、农村的大米加工厂。
10.The hardness of the low chromium iron ball is about 45～51, the impact toughness is above 6 J/cm 2. The consumption during milling is 128～140 g for milling one ton of coal which is only one third of the forging steel ball.
选用低铬铸铁生产磨球 ,经热处理后 ,磨球硬度HRC 45～ 5 1,冲击韧性≥ 6J/cm2 ,在电厂磨煤机中运行后 ,1t煤磨耗为12 8～ 14 0 g ,耐磨程度是锻钢球的 3倍
