The mandrel(including flexible balls) is the key to improving the forming limit and forming precision in thin-walled tube NC bending process.
薄壁管数控弯曲中带芯头的柔性芯模是提高薄壁管件成形极限和成形精度的关键因素。
After visual inspection and metallographic test, analysis and discuss the welding zone cracking reasons for 6061 and A7003 aluminum alloy thin-walled tube after TIG (argon shielded arc) welding.
通过宏观及微观检测，分析了6061铝合金管及A7003铝合金薄壁管经TIG(氩弧)焊后的焊接区开裂的原因。
On account of the drawbacks of the traditional thin-walled tube inversion method, a new boosted tube inversion process was put forward.
针对现有薄壁管材翻转方式存在的问题，提出了一种新的助推式翻管结构。
The axial anti-collapse behavior of thin-walled square aluminum alloy tube 6063 was investigated.
对6063铝合金薄壁方管轴向耐撞击性能进行了研究。
At this time, the optimal expanding structure get shorter, so the influence of the truncated thin-walled tube is analysed.
此时的最优扩径结构长度上变短，对变刚度结构前部扩径薄壁管截短的影响进行分析。
The hollow- sinking of a thin - walled tube is more complicated than the drawing. So far there are few references on it.
薄壁管无芯推压缩径成形过程比薄壁管拉拔成形过程复杂得多，迄今很少有这方面的文献报道。
With new research ideas, thin-walled tube occur plastic deformation by expanding to achieve the purpose of energy absorption.
继而从新的思路，以扩径作为薄壁管的变形方式进行抗撞性研究。
Because of the scale of acceleration, compressing thin-walled tube is very difficult to achieve the standard of pedestrian protection.
由于加速度范围的原因，无法得到优化结果，意味着传统的薄壁管压缩结构不利于对行人下肢的保护作用。
Clearance between tube and various dies is of great importance to influence forming limit and quality during thin-walled nc bending process.
管材与不同部位模具间隙是影响薄壁管数控弯曲过程成形极限和成形质量的重要因素。
We specialize in manufacturing and selling cold-rolled precision strip steel, bright strip steel and black strip steel, grilled blue ribbon, and thin-walled tube.
我们专业生产和销售冷轧精密带钢，光亮带钢和黑带钢，烤蓝丝带，和薄壁管。
The conclusions are applicable to the case where the inner tube is thin-walled or thick-walled in comparison with available literatures.
通过与已有文献的比较，得出的结论同时适用于内层管为薄壁管和厚壁管的情况。
Combustion instability not only affects the stability of the aero-engine work, but also caused the combustion chamber flame tube thin-walled structure acoustic-vibration coupled fatigue.
燃烧不稳定不仅影响航空发动机的工作稳定性，而且还是造成燃烧室火焰筒薄壁结构声振耦合疲劳破坏的重要原因。
Some problems about the construction, parameter determination and roll profile design of the short thin-walled tube skew roll straightener are discussed in this paper.
本文讨论了薄壁短管斜辊矫直机结构、参数确定和辊形设计中的几个问题。
The design of the main structure, foundation, stage thin-walled tube of Shanghai Theatre as well as the cantilever platform beam of its audience hall are introduced.
主要介绍上海大剧院结构设计概况、基础设计、舞台薄壁筒体及观众厅挑台梁设计等。
New type of CFTST columns with cold-formed longitudinal straight ribs is put forward to improve the mechanical capability of columns of concrete-filled thin-walled steel tube (CFTST).
为改善薄壁钢管混凝土柱的力学性能，提出了设冷弯直肋方形薄壁钢管混凝土柱的新型结构形式。
This equipment is mainly applied to the cold extrusion forming of thin-walled tubes or annealing of metal tube coated curing.
本设备主要适用于经冷挤压成形的薄壁铝管退火或金属管内涂液固化。
An axially compressive thin-walled steel element on elastic foundation is adopted to deduce the critical stress and critical diameter to thickness ratio for circular steel tube in local buckling.
在此基础上，把薄壁钢管纵向单元作为支承在弹性地基上的压杆，推导出钢管出现局部屈曲的临界应力和临界径厚比。
Therefore, the spinning of thin-walled tube with large thickness reduction can be realized through multi-pass ball spinning.
因此，通过多道次滚珠旋压可实现大减薄量薄壁筒形件的旋压成形。
An anti-floating construction method of a thin-walled hollow tube in a cast-in-place concrete hollow floor slab belongs to the technical field of residential construction.
一种现浇混凝土空心楼板薄壁空心管抗浮施工方法，属于住宅施工技术领域。
Through the optimization of thin-walled square stell tube , the research can be referred for the design of the energy absorber and the further study .
通过对薄壁方钢管的优化设计，为开合屋盖吸能元件的设计提供参考；
Through the optimization of thin-walled square stell tube , the research can be referred for the design of the energy absorber and the further study .
通过对薄壁方钢管的优化设计，为开合屋盖吸能元件的设计提供参考；
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