The change of steel tube wall thickness during sinking is studied.
钢管空拉减径，伴随着管壁变化。
The said calculation formula is useful for accurate control of the final tube wall thickness tolerance.
该计算式对精确控制成品管壁厚精度具有实际意义。
For irregularly hot stress acting tube curve, it stressfully analyzes effect of body tube wall thickness difference.
对于不规则热应力作用下的身管弯曲重点分析了身管壁厚差的作用。
In order to retain ample strength at the welded seam, the tube wall thickness is increased making the overall frame heavier.
为了保留足够的实力在焊接缝，管壁厚度增加，使整体帧重。
The introduction of the concept of bellows wall thickness accuracy has the universal significance and reference value for manufacturing technology of other thin wall tube like products.
提出的管坯壁厚精度概念极其控制方法具有普遍性，对于其它薄壁筒形件的制造工艺具有参考作用。
Through appearance inspection, wall thickness measurement, EDS analysis and X-ray diffraction, the corrosion cause of the coal economizer tube is analysed.
通过外观检验、壁厚测量、扫描电镜、能谱和X射线衍射，对省煤器管腐蚀原因进行了分析。
The wall thickness of thick wall copper tube drawn without plug is calculated by using Zhou-Zhou formula.
本文用双周数表计算了铜合金厚壁管空拔后的壁厚。
The wall thickness of the tube will be increased with increasing back pressure or increasing friction coefficient.
管材弯曲内外侧壁厚随着反推压力的增大或摩擦系数的增大而增大。
Because rigid sintered microporous tube have certain wall thickness, and the deepness of pores can also have apparent filtering effect.
刚性烧结微孔管由于有一定的壁厚，毛细孔道的深层也可起明显的过滤作用。
Wall thickness of steel tube, concrete strength, shear-span ratio and axial force ratio were considered as test parameters.
试件参数包括钢管壁厚、混凝土强度、剪跨比和轴压比。
At last, the formulation of allowable minimum bending radius limiting the change of the tube-wall thickness is derived, and proved to be of practical value.
推导出限制弯管壁厚变化量的许用最小弯曲半径公式，经试验验证具有一定的实用价值。
The parameters in the aeries include: amount of longitudinal reinforcement, amount of transverse reinforcement, shear span-to-depth ratio, thickness of tube wall and strength of concrete.
试验中的主要参数有：纵向钢筋的数量、横向配筋率、剪跨比、管壁的厚度及混凝土强度。
The paper writes that it is better to increase the wall thickness of the body upper tube, rear tail tube and mounting plate for the rear sock absorber and also gives Suggestions for some structures.
提出了加大车体上管、后尾管、后减震器安装板各自壁厚及同时加大三者壁厚几种结构改进方案。
The relatively increasing value of load increases with the decrease of wall thickness of aluminum tube.
部分填充管对空铝管的弯曲载荷相对提高量随铝管壁厚减小而增大。
The best time to melt the end of the tube increases with the increase of heating area, and more importantly, the energy of con vection and radiation decreases with the increase of the wall thickness.
管端面熔化的最佳时间，是随着需要加热的面积增大而增大的，更重要的是对流和辐射传播的能量，会随着管壁厚度的增加而减小。
The principle and method for measuring the wall thickness of transparent tube are presented.
研究了基于全反射消光原理测量管状透明体壁厚的原理和方法。
Structural reinforcement measures were proposed in order to reduce the stress level of the joint which can not be effectively reduced by increasing the thickness of the cylinder or tube wall.
当用增加筒体壁厚或者接管壁厚的方法不能有效地降低带长矩形接管受压圆筒体的应力强度时，提出了采用加强筋的方法，此措施可达到显著降低矩形接管部位应力水平的目的。
Based on lots of tube bending experiments, the stress-strain state along the tangential direction of bending line and the direction of the wall thickness is analyzed.
通过大量管材弯曲试验，分析了沿弯曲线的切向和管壁厚方向的应力应变状态，给出弯管内、外侧管壁厚变化量和切向应变的近似计算公式。
028个铸壁厚度管。
The wall thickness tolerance of hot-rolled seamless steel tubes is a major issue which has to be addressed in case of operation of any newly-built or modified hot-rolling tube mill.
如何获得更高的热轧无缝钢管的尺寸精度是新建或改造轧管机组重点考虑的问题。
The greater the tube-flexure after drawing is, the worse the wall-uniform effect and even the non-uniformity of wall thickness is aggravated.
空拔后钢管的弯曲度越大，均壁作用越小，甚至加剧壁厚不均。
Using closed die upsetting process to manufacture thick wall tubes on normal hydraulic press may cause the dis uniformity of the thickness along the length of the tube.
提出了一种浮动凹模芯模闭式镦粗法，以解决厚壁管在单向加压的普通液压机上进行闭式镦粗后壁厚不均的问题。
The experience relationship between fin-height and rough tube wall-thickness for cold-drawn outer-spiral-fin tube is established with many-membered Iinear regression in this paper.
利用多元线性回归建立了冷拔外螺纹铜管凸筋高度与坯料壁厚之间的经验关系式。
An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction.
本发明提供一种用冷加工法制造超薄壁金属管的方法。
An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction.
本发明提供一种用冷加工法制造超薄壁金属管的方法。
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