tubular pillar

The calculating of electric parameters for induction heating of round pipe workpieces;

圆管感应加热工件内电参数的计算

A mathematical model,which can be used to quantitatively calculate the limiting length of semi-solid A356 alloy rheological filling in round pipe,was deduced by analyzing the mechanics of semi-solid alloy rheological filling.

通过对半固态合金流变充型机理分析,推导出可以定量计算半固态A356铝合金在圆管内流变充型极限长度的数学模型,该模型包括了工艺参数和半固态A356合金的自身特性。

The movable matrix module of the bending die for round pipe was drawn precisely according to the rotation property of the particle.

按质点的转动性质精确绘制出圆管弯曲模活动凹模模块 ,便于数控线切割机一次完成凹模加工 ,缩短了制模周

Energy-absorption properties of foam-filled circular tubes subjected to dynamic axial crushing;

泡沫填充圆管的动态轴向压缩吸能特性

Energy-absorption properties of foam-filled circular tubes subjected to axial crushing;

泡沫填充圆管的轴向压缩能量吸收特性

Experimental study on forced heat convection for circular tubes with crossed air flow;

空气横掠圆管强迫对流换热实验的研究

Influence of lubrication on flange forming by upsetting extruding tube;

润滑条件对圆管镦挤法兰成形的影响

This paper presents a technology of tube drawing and rolling with long mandrel and roller die, describes its economical benifit, the conditions for setup this process, the theory of deformation rules, and the estimation of force and energy.

叙述了长芯棒滚模拔轧圆管的工艺、经济效果、过程建立和变形规律的原理以及力能参数测定。

The selection of Δ D and Δ S values in the design of molds for drawing round tubes by K D K S method was done according to peoples experience in the past.

用KD KS 方法设计圆管拉拔配模时经验参数ΔD 和ΔS 的值 ,已能将经验和理论结合起来进行选取 ;并对计算结果“不到位” ,提出了 4种修正方法。

This paper reccomends K D K S method for the design of the technological process for drawing round tubes,which can bring about a good match between the reduction of tube diameter and that of wall thickness during drawing passes so as to control the quality of the finished products.

本文推荐的设计计算圆管拉拔工艺流程的KD KS 方法 ,能方便地对道次减径量和减壁量进行搭配 ,以利控制成品管的性能。

The fin efficiency of continuous fin on round tube is analyzed by finite element method,and the effect of fin thickness and tube distance on staged and serial round tube continuous fins is presented.

用有限元法对圆管连续肋肋效率进行了分析计算,比较了肋片厚度、管间距等参数对顺排圆管和错排圆管连续肋肋效率的影响,并与圆管连续肋肋效率简化计算公式的计算结果进行了比较同时,用等步长优化方法对管间距进行优化设计,确定了最佳肋效率时顺排圆管和错排圆管的管间距比。

The stratified flow and the law of drag reduction for non-Newtonian fluids in pipe;

非牛顿流体在圆管中分层流动及减阻规律

New model of stratified laminar flow and drag reduction law in pipe;

圆管中分层层流流动的新模型及减阻规律

Numerical research on the structures in turbulent pipe flow;

圆管湍流结构的数值研究