Friction welding of carbon quality steel

Abstract The aim of the work is to study the possibility of using, instead of manual arc welding with a covered electrode, a method of friction welding of fittings and small-diameter branch pipes of hull power plants. The solution to this problem is possible on the basis of the application of the friction welding process of small diameter nipples and nipples. Given the insufficient theoretical and experimental study of the problem, it was necessary to solve the following scientific and technical problems: to develop the design of the models and the connected (conical) surfaces of the choke and branch pipe assemblies; substantiate the choice of optimal angles for preparing surfaces for welding; justify the choice and experimentally confirm the values of the welding mode parameters; to assess the quality of welded joints by non-destructive and destructive methods. The obtained positive results of the experimental study confirmed the technological feasibility and economic feasibility of using friction welding of carbon steel fittings and small-diameter nozzles.

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A Case Study of Gas Leakage and Assessment of Mechanical Properties With Welding Variables in Fillet Weldment of Small Diameter Pipe

Volume 3: Materials and Joining; Pipeline Automation and Measurement; Risk and Reliability, Parts A and B ◽

10.1115/ipc2006-10102 ◽

2006 ◽

Author(s):

Jong-Hyun Baek ◽

Woo-Sik Kim

Keyword(s):

Mechanical Properties ◽

Fatigue Strength ◽

Natural Gas ◽

Weld Zone ◽

Branch Pipe ◽

Small Diameter ◽

Welding Process ◽

Pipe Diameter ◽

Pipe Material ◽

Gas Leakage

A branched pipe joint has been employed to execute the pressure control, condition check, purgation, and distribution of the gas in the natural gas facilities. Installation of branch pipes is generally done through the welding work, and as a welding process, the weldolet and the sockolet are used. During the maintenance working of in-service natural gas pipeline, there was gas leakage in sockolet weldment. The causes of incident were investigated with various tests. We found the wrong pipe material, the weld defect and the non-destructive test limitation of fillet weldment as the reasons of gas leakage. As the follow-up measures, it was done to assess the soundness depending upon the configuration of the weld zone, a change in the welding process and a change in the pipe diameter by assessing the mechanical properties of the sockolet weld zone and further to assess comparatively the mechanical performance of the sockolet weld zone and that of the weldolet weld zone. In the sockolet weld, the tensile strength showed no difference and the fatigue strength showed a difference depending upon a change in the welding process. In the case that the leg length of the weld zone was made lengthwise in the direction of the branch pipe, the SMAW welding work compare with the GTAW, the sectional area of the weld zone was more increased, and the pipe diameter was more increased, the fatigue strength was increased.

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Experimental study on the effect of silver, nickel and chromium interlayers and upset pressure in joining SS304L-AA6063 alloys through direct drive friction welding process

Journal of the Brazilian Society of Mechanical Sciences and Engineering ◽

10.1007/s40430-020-02687-7 ◽

2020 ◽

Vol 42 (11) ◽

Author(s):

S. Senthil Murugan ◽

P. Sathiya ◽

A. Noorul Haq

Keyword(s):

Experimental Study ◽

Friction Welding ◽

Welding Process ◽

Direct Drive

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The Study of Male-Female Chamfer Angle Effect on Aluminum 6061 Forging at Rotary Friction Welding Process

The Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) ◽

10.36842/jomase.v65i2.234 ◽

2021 ◽

Vol 65 (2) ◽

pp. 61-67

Author(s):

Anugra Fikri Azmi ◽

◽

Yohanes Yohanes ◽

Ridwan Ridwan Abdurrahman ◽

◽

...

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Friction Welding ◽

Welding Process ◽

Specimen Length ◽

Maximum Tensile Strength ◽

A Value ◽

Rotary Friction Welding ◽

Angle Effect ◽

Aluminum Material

This research aims to investigate male-female chamfer angle effect on forging pressure, specimen length and the maximum tensile strength in splicing 6061 aluminum material, which used the rotary friction welding process. This research employed the analytical method to determine the timing of forging pressure as an initial reference to conduct the experimental study for the specimens test. The specimens were tested by varying the male-female chamfer angle, namely 0°, 15°, 30°, 45°, 60°. The results test were obtained the longest application of forging pressure at the male-female chamfer angle of 60° and the fastest application of forging pressure at the male-female chamfer angle of 15°. The change in length of the specimen during the welding process for each variation of the male-female chamfer angle varies due to the friction time different. The largest change in length was at the male-female chamfer angle of 15° and the smallest change in length at the male-female chamfer angle of 60°. The maximum tensile strength was obtained at the variation of male-female chamfer angle of 60° with a value of 226.47 MPa.

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An experimental study on interference friction welding process

Procedia Manufacturing ◽

10.1016/j.promfg.2019.12.001 ◽

2019 ◽

Vol 41 ◽

pp. 1149-1155 ◽

Cited By ~ 1

Author(s):

Deep Barua ◽

Torgeir Welo ◽

Geir Ringen ◽

Jyhwen Wang

Keyword(s):

Experimental Study ◽

Friction Welding ◽

Welding Process

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A compact guided-wave EMAT with pulsed electromagnet for ferromagnetic tube inspection

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209409 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 951-958

Author(s):

Tianhao Liu ◽

Yu Jin ◽

Cuixiang Pei ◽

Jie Han ◽

Zhenmao Chen

Keyword(s):

Power Plants ◽

Signal To Noise Ratio ◽

Small Diameter ◽

Performance Testing ◽

Guided Wave ◽

High Signal ◽

Receiver Coil ◽

Signal To Noise ◽

Corrosion Defects

Small-diameter tubes that are widely used in petroleum industries and power plants experience corrosion during long-term services. In this paper, a compact inserted guided-wave EMAT with a pulsed electromagnet is proposed for small-diameter tube inspection. The proposed transducer is noncontact, compact with high signal-to-noise ratio and unattractive to ferromagnetic tubes. The proposed EMAT is designed with coils-only configuration, which consists of a pulsed electromagnet and a meander pulser/receiver coil. Both the numerical simulation and experimental results validate its feasibility on generating and receiving L(0,2) mode guided wave. The parameters for driving the proposed EMAT are optimized by performance testing. Finally, feasibility on quantification evaluation for corrosion defects was verified by experiments.

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