The author analyzed the reasons for the collapse hole,contracted hole and wrinkle resulted in DB941 series of the emission tubes with the thick wall which were made from 95%Al2O3 porcelain,and put out the measures to solve them,which meets the needs of the production.
对用95%A l_2O_3瓷制厚壁发射管D B941系列产品会造成塌坑、缩孔、皱纹等缺陷进行了分析,并探索其产生的原因,提出了解决的方法,满足了生产所需。
A type of thermal rotary extruding technology,which is used for shaping thick wall seal heads,was studied and tested.
研究并试验了厚壁封头成形的热旋加工工艺 ,摸索出适宜的加热方式和加热部位 ,选择出合适的加热温度区域 ,从而对提高封头旋压机的生产能力 ,改善封头成形质量 ,提高成形效率 ,提供了可靠的科学依据和方法。
The drawing process of thick wall semi spherical heads is analyzed through dividing the billet into four regions.
针对厚壁半球形封头的拉深成形 ,将板坯分成 4个区域 ,根据每个区域的应力分布特点 ,对每个区域的壁厚变化规律做了理论上的推导与计算 ,并将理论计算值同有限元模拟结果比较 ,得到了很好的效
A method of automatic ultrasonic detection for tubes with thick walls are introduced.
介绍了厚壁承压无缝钢管超声波探伤方法,自动化探伤中探头的扫查设计,以及采用该方法开发的钢管自动探伤设备的实用效果。
The ductility analysis of R.C.shaped columns with thick leg;
影响厚壁异形柱的延性性能因素分析
Study the worst loaded angle of RC T-shaped columns with thick leg;
厚壁T形柱最不利荷载角的确定
A hydraulic method for determining incipient yield pressure of thick wall cylinder;
测定厚壁圆筒初始屈服压力的液压方法
This paper performs the limit analysis of a thick wall cylinder of linear strengthened material based on the unified strength theory.
运用统一强度理论对承受内压的拉压屈服强度不同的 线性强化材料的厚壁圆筒进行了极限载荷分析,得到了适用 于多种材料的厚壁圆筒极限载荷的统一解析式。
Using elastic solution of thick wall cylinder, it is analyzed that the optimum design on three-layers assembled cavity die of cold extrusion under the elastic limit stress.
应用厚壁圆筒的弹性解 ,分析了冷挤压三层组合凹模具有最大弹性极限时的优化设计 ,推导了三层组合凹模的最大承压、各层分界面半径和分界面过盈量的优化设计计算公式。
The process for preparing TC4 thick-wall tube by radial forging was studied.
研究了用径向锻造方法制备TC4厚壁管材的生产工艺。
The main parameters of open-die cold extrusion without mandrel of thick-wall tube are analyzed.
分析了厚壁管件无芯棒开式冷挤压的主要参数；确定了该工艺极限变形程度的判断依据；对两种不同厚径比的厚壁管极限变形程度进行了试验研究，给出了可供实际应用的数据。
By elaboration and comparison of the principle of three methods for high pressure water distributor opening-reinforcement,in consideration of the manufacture and field installation,this article points out that the simplest,safely,the effective method is to use thickness nozzle making up symmetrically.
通过对常用不同补强方法原理的阐述、对比,综合考虑制造和现场安装,认为高压分水器最简单、安全、有效的补强方法就是采用厚壁接管对称补强结构。
The flow and heat transfer of HDPE thick wall pipe at die parallel lend (DPL) and calibration sleeve (CS) were analyzed in this paper, also a new method for calculating specific heats from DSC diagrams was put forward at melt-solid two phases model.
本文对HDPE厚壁管的口模定型部分以及后面的冷却定径部分的流动和传热问题进行了分析,建立了数学物理模型。
This paper makes the Autofrettage analysis of thick wall spherical shell of linear strength material based on unified strength theory.
运用统一强度理论对承受内压的线性强化材料的厚壁球壳进行了自增强分析,得到了适用于多种材料的厚壁球壳弹性区与塑性区的应力分布、残余应力分布及合成应力分布的统一解析式。
This paper presents a new method to calculate the limit load of thick wall cylinder and thick wall spherical shell based on Yus Unified Strength Theory and a Unified solutions are obtained.
采用俞茂宏统一强度理论分析了厚壁圆筒和厚壁球壳的极限荷载 ,得出了统一解形式。