Laser Welding Head Tailored to Tube-Sheet Joint Requirements for Heat Exchangers Manufacturing

Vandewynckèle, Ambroise; Vaamonde, Eva; Fontán, Marcos; Herwig, Patrick; Mascioletti, A.

doi:10.1016/j.phpro.2013.03.063

Cited by 18 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Tube-to-tubesheet welding is widely used in the processing of pressure vessels and heat exchangers and broadly applied in the petrochemical industry, nuclear power, metallurgy, and other industries [1,2]. However, it has seriously hampered the development of the industry due to its low degree of automation [3].…”

Section: Introductionmentioning

confidence: 99%

Construction of a semi‐dense point cloud model for a tube‐to‐tubesheet welding robot

Wang

Rong

Liu

et al. 2022

IET Collab Intel Manufact

View full text Add to dashboard Cite

Tube‐to‐tubesheet welding is widely applied in industrial fields. However, the current tubesheet welding robot still mainly relies on manual tubesheet models. Aiming to solve this problem, this paper proposed an improved direct method to automatically establish a tubesheet semi‐dense point cloud model based on a selected monocular camera and a one‐dimension (1D) laser rangefinder. Firstly, a laser filtering method was designed to acquire the distance between the camera and tubesheet through the 1D laser rangefinder. Then, from combing the 1D laser rangefinder data with keyframe data, the scale factor was obtained and proceeded to be processed by the Kalman filter to reduce the error. Then, the computed scale factor and all the keyframes were calculated to construct the tubesheet point cloud model through the graph optimisation algorithm. The experimental results showed that the semi‐dense point cloud model of the tubesheet could be efficiently established by the proposed algorithm with row error and column error both less than 1 mm, satisfying the welding requirements.

show abstract

Section: Introductionmentioning

confidence: 99%

Construction of a semi‐dense point cloud model for a tube‐to‐tubesheet welding robot

Wang

Rong

Liu

et al. 2022

IET Collab Intel Manufact

View full text Add to dashboard Cite

show abstract

“…At the moment, several alternative technologies for welding the TTP-joint of heat-resistant martensitic 5CrMo16 type steels are being developed, in which, due to the elimination of preliminary, accompanying heating and post-welding heat treatment, labor and energy costs are reduced in production of heat exchangers t [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion resistance of friction welding joints between tubes and tube plate

Karetnikov

Токарев

Yakhin

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The cost of production and reliability of shell-and-tube heat exchangers is mainly determined by the features of the tube bundle and the joint between tube and tube plate (TTP) in particular. This paper provides a comparative analysis of the weld structure and electrode potential distribution of weld joints and base metal seams simulating the joint between heatexchange tube and tube plate (steel 5CrMo16) using the following welding methods: manual metal arc welding, gas tungsten arc welding and rotating friction welding. Comparison between macro- and microstructures of certain zones of tested welded joints, as well as values of electrode potential at specific points of the base metal and welded joints obtained by various methods, made it possible to conclude the effectiveness of application of specific ways of welding by their effect on corrosion resistance of given assembly.

show abstract

“…The large amount of tubes of this kind of equipment [ 4 , 14 ] has a major impact on the manufacturing cost [ 19 ], so it is necessary to increase the quality of the welds and the productivity of the welding process. Orbital Gas Tungsten Arc Welding (GTAW) or Tungsten Inert Gas (TIG) is the most widely used process for this kind of joints, although other processes have also been studied [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tube-to-Tubesheet Welding in Carbon Steel Heat Exchangers of a Double Plate Header Box

González¹,

Hernández‐Ortega

Jiménez

et al. 2021

Materials

View full text Add to dashboard Cite

The rear wall of the header box serves as a tubesheet in heat exchangers of double plate header box. Tube-to-tubesheet welding must be performed using orbital Gas Tungsten Arc Welding (GTAW) with a head extension, which is passed through the corresponding hole in the front wall (plugsheet) of the header box, where the welding machine is supported. In this project, the effect of parallelism deviations between the plugsheet and the tubesheet of carbon steel header box is analyzed to evaluate its influence on the quality of the tube-to-tubesheet welding. Welded tube (SA-210 Gr. A1) to tubesheet (SA-516 Gr. 70) coupons are manufactured simulating the parallelism deviations previously analyzed in two double plate header boxes of air-cooled heat exchangers using two different preheating temperatures. Macrographic analysis is performed in order to evaluate the weld penetration (minimum leak path) and length of the weld leg in tube-to-tubesheet joints. The results obtained show important variations in those parameters when the parallelism deviations are equal to or greater than −1 mm over the theoretical distance as well as when the distance approaches +1 mm or more. Finally, the incorporation of dimensional controls prior to the welding process is discussed and the implementation of improvements in orbital GTAW equipment is recommended as an optimal solution for this kind of heat exchangers.

show abstract

Laser Welding Head Tailored to Tube-Sheet Joint Requirements for Heat Exchangers Manufacturing

Cited by 18 publications

References 3 publications

Construction of a semi‐dense point cloud model for a tube‐to‐tubesheet welding robot

Construction of a semi‐dense point cloud model for a tube‐to‐tubesheet welding robot

Study of corrosion resistance of friction welding joints between tubes and tube plate

Analysis of Tube-to-Tubesheet Welding in Carbon Steel Heat Exchangers of a Double Plate Header Box

Contact Info

Product

Resources

About