直缝焊管

制管过程中的包申格效应及制管过程中引入的高弹复应力，使螺旋焊管及直缝焊管管体屈服强度明显低于板卷屈服强度。

The yield strength decrease of SSAW and ERW tube body can be attributed to both Bauschinger Effect and high springback stress incurred by manufacturing process .

有限条法模拟直缝焊管成型过程

Simulation of ERW pipe forming by finite strip method

W孔型在直缝焊管孔型设计中的应用

An Application of W - pass in the Pass Design of Welding - tube

直缝焊管的W弯曲成型方法

W-shape bending forming of longitudinal welded pipes

介绍了直缝焊管W成型的设计方法。

The design method of W type of the forming pass for longitudinal welded tube is introduced .

为了提高直缝焊管机组轧辊孔型设计的效率和质量，采用电子计算机辅助设计方法（CAD）进行轧辊孔型设计。

Roll pass design of straight welded tubing with CAD method have been developed in order to raise the efficiency and the quality of products .

ERW直缝焊管焊缝形态与金相检验评价

Weld Shape Evaluation and Metallographic Examination of ERW Pipes

ERW直缝焊管成型装置的发展

Development of ERW Straight Welded Pipe Forming Mill

针对直缝焊管CO2预焊，研制了以激光为主动光源的视觉传感焊缝自动跟踪系统。

Aiming at the CO2 pre-welding of the Longitudinal Welded pipe , taking the laser as the initiative light source , a visual sensing for automatic weld tracking system is developed .

介绍了国外长输管线用ERW直缝焊管、SAW螺旋焊管的生产工艺及质量要求。

Described in the paper are the manufacturing processes and quality criteria employed abroad for ERW straight weld-pipes and SAW spiral-weld pipes used for long-distance transport purpose pipelines .

简要介绍了ERW直缝焊管成型装置的产生和发展历程。

Briefed in the paper are the invention and development history of the ERW straight welded pipe forming mill .

ERW钢管的数控仿形锯切技术概述ERW直缝焊管成型装置的发展

Numeric Control Profiling Saw Cutting-off Technology of Large Size ERW Welded Pipe Development of ERW Straight Welded Pipe Forming Mill

高频直缝焊管用EMA-H电磁超声波探伤仪的研制一种新型的IGBT高频交-直-交变流器

R & D of EMA-H EMUS Detector for Hi-frequency Straight Welded Pipe A New High Frequency IGBT AC-DC-AC Converter

简析了国内外直缝焊管变形中较典型的三种成型方式&排辊成型、FF成型、CBR成型及其特点，指出了直缝焊管成型工艺的发展趋向。

F. F forming ; CBR forming , in deformation process of longitudinally welded pipe at home and abroad , are analysed and development tendency of forming technology is also discussed .

简述了ERW直缝焊管清除内毛刺的方法及设备构成；ERW直缝焊管成型装置的发展

Briefed are the process and equipment configuration of the inner burr-removing system for ERW straight welded tubing . Development of ERW Straight Welded Pipe Forming Mill

为了实现高频直缝焊管焊接挤压力自适应控制，本文提出了一种实用的离散模型参考自适应控制系统（MRACS）的控制方案。

This paper presents a kind of practical discrete MRAC scheme forthe welding squeezing force adaptive control in the longitudinal seamwelding tube mill with high frequency .

PLC-DDC-D直缝焊管定尺飞锯控制系统设计ERW直缝焊管成型装置的发展

Design of PLC-DDC-D Control System for Flying-sawing Machine for Length-cutting of Straight welded Tube Development of ERW Straight Welded Pipe Forming Mill

介绍一种用于中等管径、管长12m以上的直管钢管（螺旋、直缝焊管或无缝钢管）的内外涂塑新设备。

Described here in the article is a newly developed system for outside / inside surface plastic-coating of medium sized straight pipes longer than 12 m , including spiral and longitudinal welded pipes and seamless steel pipe .

介绍了大直径直缝焊管生产的UOE工艺、辊弯工艺、改进式模压工艺和改进式折弯工艺。

Introduced in the article are such manufacture processes for large-sized straight welded tubes as the UOE process , the roll-bending process , the innovative die-pressing process and the innovative folding process .

根据生产实践提出了直缝焊管机组生产＜φ50mm×0.7～2mm焊管用带钢宽度的简易计算公式。

Based on production practice , a formula is developed for easy calculation for width of strip to be used for producing welded tubes with a size range under φ 50mm × 0.7 ￣ 2mm on a small diameter straight seam welded pipe mill .

对比、分析了直缝焊管与螺旋焊管和无缝管作油井管的优势，简要介绍了ERW油井管的生产流程和主要设备，提出了积极引进国外生产技术，生产ERW油井管的可行性和必要性。

The thesis analyses the advantage of the ERW tubing and casing comparing with spiral welding tube and seamless casing and tubing , introduces its main manufacturing process and facility , bring forward the feasibility and necessary of importing the oversea manufacturing technology to produce the ERW tubing and casing .

实际应用表明，采用EMA-H电磁超声波探伤仪对高频直缝焊管进行探伤，可靠性高，而且能对钢管焊缝、管体作全面的探伤检测。

The application result shows that for inspection of the hi-frequency straight welded pipe , the said detector is capable of reliable operation to inspect both weld seam and the full length over the pipe .

采用基于Updated-Lagrangian法的大变形样条有限条法，分析直缝焊管多道次连续成型过程的纵向薄膜应变和位移。

To improve products quality and study the strain distribution , large deformation spline finite strip method based on Updated-Lagrangian method was employed to analyze ERW pipe multiple rolls progressive forming . Conclusions could be drawn from the simulation results of longitudinal membrane strain and displacement .

组合式直缝焊管轧辊的研制

Development of integrated die rolls for longitudinal - welding pipe mill

大口径直缝焊管成型应力分析

Analysis for the Formational Stresses of the Large Diameter Straight-weld Pipe

提高高频直缝焊管内毛刺清除质量的措施

Measures as Taken to Improve Internally-burring of Hi-frequency Straight Welded Tube

直缝焊管焊缝跟踪系统介绍

The Track System for Weld of Longitudinal Seam Welded Steel Pipe

φ508直缝焊管机组工艺的先进性

φ 508mm Longitudinally Welded Pipe Mill Technology and Its Advanced Character

射流式超声波自动探伤系统在直缝焊管上的应用

Application of Automatic Jet-flow Ultrasonic Detection System to SSAW Pipe Production

新型直缝焊管内毛刺在线清除装置的研制

Research on New on-line Inside Burrs Removing Equipment of Longitudinal Welded Pipe