| 1. | Research of non - uniform wall thickness of heavy - wall tube rolled by three - high tube mill
三辊轧管机组厚壁管轧制壁厚不均研究 |
| 2. | Design on a pulsed wire feeding control system of all - position narrow gap and thick - walled pipe welding
厚壁管窄间隙全位置焊接脉动送丝系统设计 |
| 3. | Standard specification for extruded and compression molded rod and heavy - walled tubing made from polytetrafluoroethylene
聚四氟乙烯制挤压和压缩模塑杆和厚壁管的标准规范 |
| 4. | Thousands of installations demonstrate the reliability and suitability of these simple and effective tools for sand production
本机具有可更换磨损件，厚壁管和轴，带隔离结构下部轴承和特重负荷齿轮箱。 |
| 5. | The research and prediction of relative elongation of thick - walled tube without mandrel by open - die cold extrusion is the base of the design of tube parts and special equipment
摘要对于无芯棒开式冷挤压厚壁管件的相对伸长量的研究与预测是设计开式冷挤压管类零件反其专用设备的依据。 |
| 6. | The main parameters influencing relative elongate on are analysed by research on experiment of size prediction of thick - walled tube without mandrel by open - die cold extrusion , and their curves of changing rule are given , which applies reference in order to direct practical production
本文通过对厚壁管件无芯棒开式冷挤压尺寸预测的实验研究，分析了影响相对伸长量的犯要参数，找出了它们与相对伸长量之间的变化规律曲线，为指导实际生产提供了依据。 |
| 7. | It also gives the semi - ellipse closing roller forming principle & quot; semi - ellipse + bouncing = round & quot; , and makes the principle formulated and quantitative for the control method and pattern of the pipe forming bouncing . this is the reasonable model for forming of thick wall pipe and high stress pipe
指出半椭圆闭口孔型辊的成型思想是“半椭圆+回弹量=圆” ，并且使这一思想公式化、数量化，为控制成型管坯的回弹提供了方式和方法，是成型高强度厚壁管的理想模具。 |
