scholarly journals Evaluation of anticorrosive properties of welded junctions of pipes and profiles made of a galvanized strip on a continuous electric-weld pipe mill

2016 ◽  
Vol 16 (02) ◽  
pp. 98-105
Author(s):  
A.G. Varnak ◽  
◽  
O.V. Varnak ◽  
T.N. Churikova ◽  
◽  
...  
Keyword(s):  
Electric Weld ◽  
Pipe Mill

scholarly journals Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

2020 ◽  
Author(s):  
Nikolay Tsarev ◽  
Elena Tatyannikova
Keyword(s):  
Response Surfaces ◽  
Steel Pipe ◽  
Chromatographic Paper ◽  
Capillary Suction ◽  
Acid Pickling ◽  
Steel Mills ◽  
Rinse Water ◽  
The Impact ◽  
Pipe Mill ◽  
Wastewater Sludges

Acidic spent pickling solutions and rinse water are produced during steel pipe acid pickling. They are usually neutralised with lime in a neutralisation plant and pumped in the form of a wet sludge to a landfill. This is one of the main environmental issues of Russian steel mills. The implementation of sludge treatment units, including equipment for sludge polymer conditioning and dewatering, is an import consideration when seeking to reduce the impact of steel mills on human health and the environment. The researches results of polymer conditioning of the aggressive wastewater sludges by flocculants are reflected in the paper. Sludge samples were obtained from the neutralisation plant of an Ural’s steel pipe mill. Sludges of two types were investigated: the sludge which is formed in clarifiers during spent pickling solutions neutralization with lime and the sludge which is formed in clarifiers during rinse water neutralization with lime. During the work non-ionic, cationic, and anion flocculants Praestol® efficiency was estimated. The shortest time of water capillary suction from the flocculated sludge was accepted as efficiency criterion of flocculant processing. It was defined with use of the capillary suction timer Fann® and Whatman® 17 chromatographic paper. It is established that: non-ionic focculant Praestol® 2500 dose of 4–5 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid spent pickling solutions; the anionic flocculant Praestol® 2540 dose of 1.5–2 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid rinse water. The empirical response surfaces and the contour plots showing the relationship between capillary suction time and a dosage of flocculant and a charge density (% hydrolysis) of a flocculant were reveived. Keywords: steel pipe mill, acid pickling, wastewater, sludges, flocculants, capillary suction time

scholarly journals Recent Development of Motor Speed Control System and It's Application to Seamless Pipe Mill

2000 ◽  
Vol 86 (2) ◽  
pp. 99-104
Author(s):  
Shunji FUKUSHIMA ◽  
Satokazu YOSHIDA ◽  
Hisao GOTO ◽  
Chihiro HAYASHI
Keyword(s):  
Control System ◽  
Speed Control ◽  
Motor Speed ◽  
Seamless Pipe ◽  
Speed Control System ◽  
Pipe Mill

Development of Ultrasonic Phased Array Probe for SAW Seam Inspection of UOE Pipe

2007 ◽  
Author(s):  
Masaki Yamano ◽  
Hiroyuki Okubo ◽  
Takumi Horikiri ◽  
Makoto Nagase
Keyword(s):  
Phased Array ◽  
Inspection System ◽  
Line Pipe ◽  
Array Probe ◽  
Ultrasonic Phased Array ◽  
Detection Capabilities ◽  
Girth Welds ◽  
Welded Seam ◽  
Submerged Arc ◽  
Pipe Mill

The requirements of Ultrasonic Testing, such as DNV, ISO specification etc., for longitudinal submerged arc weld (SAW) seam of UOE pipe become severe to the offshore steel line-pipe with high grade and heavy wall thickness. In order to satisfy the requirements, testing method with multi-probe arrangement have been widely applied in the pipe manufacture. Recently, the phased array technique has been applied for inspection of girth welds of pipeline and longitudinal ERW (electric resistance welded) seam instead of multi-probe method. But the inspection system with conventional phased array probe has many difficulty to apply for inspection longitudinal SAW seam of UOE pipe, because of defect detection capabilities, array elements arrangement, and so on. The authors have developed an applicable ultrasonic phased array probe to satisfy the severe requirements for longitudinal SAW seam of UOE pipe. This paper presents the results of our original designed array probe, which has been composed of 32-transducer elements mounted on cylindrical-shaped plastics, and also compares the inspection results to those obtained on the conventional multi-probe and our developed array probe in the UOE pipe mill.

Integration of Pipeline Specifications, Material, and Construction Data: A Case Study

2010 ◽  
Author(s):  
Jeffery E. Hambrook ◽  
Douglas A. Buchanan
Keyword(s):  
Problem Area ◽  
Construction Process ◽  
Missing Information ◽  
Pipe Segment ◽  
Areas Of Concern ◽  
Data Log ◽  
Pipe Mill

This paper introduces the concept of a Pipe Data Log (Pipe Log). The idea is not new but a Pipe Log is rarely created for new pipeline projects. A Pipe Log is frequently created as part of the post-construction process and is intended for Integrity purposes. However, creating and populating the Pipe Log as construction proceeds can provide multiple benefits: • Progress of all aspects of construction can be tracked. • Anomalies in data received can be identified immediately and rectified before the project proceeds. • Missing information can be captured before the project is completed and crews are demobilized. • The field engineer can compare with design to verify that the project is being constructed as it was designed. • When construction is complete the Pipe Log will be as well. WorleyParsons Canada Services Ltd., acting as Colt Engineering, worked on behalf of Enbridge Pipelines Inc. and created a detailed Pipe Data Log for the Canadian portion of the Southern Lights LSr Project. The Pipe Log was created using Microsoft® Excel with a line item for each individual piece of pipe that was welded in the pipeline. Information corresponding to the location of each pipe segment, welds performed, material, terrain, coating, protection, and testing was recorded. The Pipe Data Log is excellent for auditing data as the information is being entered. Information collected by the surveyor can be matched to that provided by the pipe mill and by weld and NDE inspectors. Missing or questionable information can be corrected during construction much easier than post-construction. At post-construction, the Pipe Log allows the Integrity team to quickly determine if there are other areas of concern that have similar properties to another problem area.

Effect of Electric Weld Current on Spatter Reduction in Spot Welding Process

2004 ◽  
Vol 261-263 ◽  
pp. 1623-1628 ◽  
Author(s):  
Do Won Seo ◽  
Yang Bae Jeon ◽  
Jae Kyoo Lim
Keyword(s):  
Shear Strength ◽  
Spot Welding ◽  
Welding Process ◽  
Weld Quality ◽  
Tensile Shear Strength ◽  
Sheet Metals ◽  
Tensile Shear ◽  
Weld Current ◽  
Electric Weld ◽  
Welding Processes

Spot welding is a process that sheet metals are joined in one or more spot by heating at the faying interface. In this process, the spatter is dispersed from melted area. It has been reported that spatter generation has adverse effects on weld quality. However, no systematic study has been carried out to find out its effect on weld quality in resistance spot welding processes. In this study, specially designed specimens are used to perform experimental investigation of spatter generation and its effect. Major finding of this study show trends in tensile-shear strength for various amounts of spatter generated during spot welding process. Thus, optimum welding conditions are proposed in view of spatter generation and tensile-shear strength.

Mastering the bending and drawing of skelp in the line of a 73-219 electric-welded pipe mill at the Severskii Pipe Plant

Metallurgist ◽  
2009 ◽  
Vol 53 (5-6) ◽  
pp. 356-358
Author(s):  
I. T. Totskii ◽  
A. S. Anan’ev ◽  
O. L. Markin ◽  
A. N. Shchennikov
Keyword(s):  
Pipe Plant ◽  
Welded Pipe ◽  
Pipe Mill

Using Ring Stiffness to Calculate the Elastic Modulus of Steel-Plastic Composite Pre-Insulated Pipe

2012 ◽  
Vol 581-582 ◽  
pp. 602-605
Author(s):  
Cheng Yang ◽  
Fei Wang ◽  
Guo Wei Wang
Keyword(s):  
Finite Element Analysis ◽  
Elastic Modulus ◽  
Pipe Steel ◽  
Test Results ◽  
Buried Pipeline ◽  
Element Analysis ◽  
Practical Test ◽  
Plastic Composite ◽  
Mechanics Of Materials ◽  
Pipe Mill

Elastic modulus of the pipe mill is one of the most important figures, which decides the character of the mechanics of materials. It is usually gained by experiments or finite element analysis. Combining computing formula of ring stiffness of buried pipeline and test results of ring stiffness of new straight buried thermal pipe (steel-plastic composite pre-insulated pipe), this article uses moment of inertia and equivalent section method to calculate elastic modulus of this pipe catalogue. By comparing with practical test results, the article testifies that this method could be probably used in directly buried installation.

Sign in / Sign up

Export Citation Format

Share Document