The length, diameter and using time of mandril are needed in the process of manufacturing the pipe.
在扩管生产中，需要实时了解每根顶杆的长度、外径、使用次数等信息。
Top effort, mandril should have sufficient strength, should head out of uniform, mandrel not served as core.
顶出力大，顶杆应有足够强度，顶出应均匀，顶杆不宜兼作型芯。
The maximum stress occurs on the surface of the mandril and small stress occurs on the other part of the mandril.
芯模的最大应力出现在芯模的浅表层，在周向表面上呈点状分布，而芯模其他部位承受的应力并不是很大。
Results Pyrethroid residue in mandril increased by 400% and porosity reduced by 45% after heating electrothermal vaporizing liquid.
结果电热蚊香液在加热后期芯棒中的拟除虫菊酯残留量增加400%，孔隙率降低45%。
Obiective Test the relationship between the heating time of electrothermal vaporizing liquid and the residues of pyrethroid in mandril.
目的测试电热蚊香液加热时间与芯棒中拟除虫菊酯残留量的关系。
Compared with the prior art, the invention causes no pollution to the production environment, has high mandril strength and even volatility.
本发明与现有技术相比，生产环境无污染，芯棒强度高，挥散均匀。
The axial stress on the steel tube which appears on the contact region of the steel tube and mandril is larger than the radial and circumferential stress.
钢管周向和径向的应力值不大，而轴向应力值较大，最大轴向应力出现在钢管与芯模的接触部位。
Established in 1995. U. s. products from raw materials Mandril plating and heat treatment process to adopt a consistent approach to provide services to customers.
1995年成立。我们的产品从芯棒的原材料到电镀及热处理过程采一贯方式为客户提供服务。
In the first part, it is mainly introduced the function which the mandril detection system should have, the theory of detecting, constitutes and work process of the system.
第一部分简述顶杆检测的原理，介绍系统的组成情况和工作过程，最后分析了系统设计中的关键技术。
It give out an efficient method of saw band machine tensile system lag determination through the analysis of time lag state equation on high elasticity mandril model saw band machine tensile system.
本文通过对高弹性顶杆式带锯机张紧系统时滞状态方程的分析，得出了确定带锯机张紧系统时滞的有效方法。
Scanning Electronic Microscope(SEM)and EDAX were used to analyze the surface defect of mandril for hot rolling steel tube. Appearance and growth of the surface defect were investigated and discussed.
采用扫描电镜及能谱分析对热轧管用失效芯棒的表面缺陷进行分析，探讨了芯棒表面缺陷的产生原因和长大机理。
Scanning Electronic Microscope(SEM)and EDAX were used to analyze the surface defect of mandril for hot rolling steel tube. Appearance and growth of the surface defect were investigated and discussed.
采用扫描电镜及能谱分析对热轧管用失效芯棒的表面缺陷进行分析，探讨了芯棒表面缺陷的产生原因和长大机理。
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