Based on the finite element simulation of the free hydraulic bulges (FHB) of seamless and seamed tubes, the influence of weld metal properties on deformation behavior of seamless and seamed tubes has been investigated by means of analyzing and comparing the contour profiles, wall thickness distributions and the maximum bulge heights.
通过对无缝管和有缝管在不同内压下自然液压胀形过程的有限元数值模拟,分析比较了管材胀形后的轮廓形状分布、壁厚分布和最大成形高度,探讨了焊缝材料性能对上述三个成形参数的影响,结果表明:无缝管胀形后轮廓形状对称,而有缝管胀形后轮廓形状不对称,并且这种不对称性随着内压增大而加剧;无缝管胀形后壁厚沿环向分布均匀,而有缝管胀形后,距焊缝对称中心0~15°之间的壁厚沿环向分布不均匀,距焊缝对称中心15°~180°之间的壁厚基本上呈均匀分布,且壁厚值和同种材料的无缝管在相同条件下胀形的壁厚值接近;焊缝材料强度比基体材料强度高,则极限成形高度大。
The requirements of dimensions,mechnical properties,surface quality on aluminium alloy seam tubes are explained.
介绍了本标准的编制过程及对有缝管材尺寸偏差、力学性能、表面质量等方面的规定。
Characteristics of tool portable type layout and workpiece portable type layout of large pipe linking machine have been compared,the principle and operating method of " three stage operating method " have been described.
对比了大型管合缝机工具移动式布局与工件移动式布局的特点,介绍了"三段作业法"的原理、作业方式。
Enterprise is major in processing the welded stainless steel tube and tube for industrial fluid.
公司专业生产中高档不锈钢有缝管和工业流体用管。
A break in the pipe was found out.
发现管道上有一处裂缝。
Perhaps there is a fracture in the water pipe.
也许水管有裂缝了。
continuous slot pipe base screen
有连续割缝中心管的绕丝筛管
Check the pipes for leaks at the joints.
检查一下管子的接缝是否有漏隙。
All gas line joints shall be orbital welded except those connecting to valves.
所有气体管路的连接采用无缝焊接。
Finite Strip Analysis for ERW Pipe Multiple Rolls Progressive Forming
多道次直缝焊管连续成型有限条分析
STAINLESS STEEL SEAMLESS TUBE/ PIPE IS A KIND OF LONG ROLLED STEEL PRODUCTS， WHICH HAVE HOLLOW SECTION， AND THE PERIPHERAL HAVE NO SEAM.
无缝钢管即是一种具有中空截面、边没有接缝的长条钢材。
To aid the machinist while making up.
有助于缝纫工的缝制。
The Study of Informationization Strategy for CSST
成都无缝钢管有限责任公司信息化战略研究
The materials of semicircle seamless steel tube can fall into carbon steel (20#) and stainless steel (321).
半圆无缝管材质有碳钢（20#钢）和不锈钢（321钢）。
Acquisition and Management Technology of the Effective Information from Real-time Weld Image;
实时焊缝图像有效信息获取及管理技术研究
Finite element analysis on the comprehensive factors of slotted liner collapsing strength
割缝筛管抗挤压强度综合因素有限元分析
Study on FEM Simulation of Cage Forming of Large-sized ERW Straight-welded Pipe
大直径ERW直缝焊管排辊成型的有限元模拟
Niobium seamless tubes
GB/T8183-1987铌无缝管
With these instruments, a tube of the liquid is placed in a slot and light of selected wavelength is passed through the tube.
使用时将装有液体的试管放人狭缝内,让一定波长的光线穿过试管
HOSES: Check radiator, cooling, heating and vacuum hoses for cracks and bulges.
软管：检查散热器、冷却、供热和真空等软管有无裂缝和膨胀处。
Wuxi Zhenda Bearing Steel Tube Manufacturing Co.,Ltd, professional seamless steel tube manufacturer.
无锡市振达轴承钢管制造有限公司，专业无缝钢管制造商.
