An Analysis of the Joints’ Properties of Fine-Grained Steel Welded by the MAG and SAW Methods

Krawczyk, R.

doi:10.1515/amm-2016-0266

Cited by 2 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting microstructures of the welded base materials within HAZ were similar to those presented in the works on the issues relating to the welding of these construction materials, e.g. [ 5 , 11 , 14 , 16 , 18 , 40 , 46 ].…”

Section: Research Results and Analysissupporting

confidence: 70%

Evaluation of the Properties and Microstructure of Thick-Walled Welded Joint of Wear Resistant Materials

et al. 2022

View full text Add to dashboard Cite

The research was conducted on a thick-walled welded joint between the HTK 900H wear-resistant steel plates and the A6 cast profile. The aim of the experiment was to produce a joint with the relevant performance requirements, i.e., a good abrasion resistance joint in the weld face area while ensuring its proper plasticity. The welded joint was made using the MAG PULSE and the high-performance MAG TANDEM methods under automated conditions using the linear welding energy ranging from 1.2 to 2.2 kJ/mm for the different joint regions. The scope of the research included both non-destructive and destructive testing. The non-destructive visual (VT), magnetic-particle (MT), and ultrasonic (UT) tests revealed a good quality of the welded joint with no significant welding imperfections. The microstructure of the welded joint in the weld zone was characterized by a dominant volume fraction of martensite/bainite. The measurement of hardness near the face of the weld confirmed obtaining similar values for this parameter. The HTK 900H steel was characterized by hardness at the level of 383 HV10, whereas the A6 cast-328 HV10, and the weld-276 HV10. At the same time, the analyzed joint showed high ductility in the range of 86 to 159 J. The tests carried out showed that the linear energy control allowed a welded joint with the required performance characteristics to be obtained.

show abstract

Section: Research Results and Analysissupporting

confidence: 70%

Evaluation of the Properties and Microstructure of Thick-Walled Welded Joint of Wear Resistant Materials

et al. 2022

View full text Add to dashboard Cite

show abstract

Analysis of the process of qualifying the welding technology of S355JR structural steel using the submerged arc welding method

Wieczorska

Labuda

2023

Journal of Achievements in Materials and Manufacturing Engineering

View full text Add to dashboard Cite

This paper presents the issue of welding technology qualification using the example of structural steel S355JR with a plate thickness of 25 mm and 100 mm, bevelling V. The main objective of this work was to attempt to perform a full qualification of the submerged arc welding process in accordance with the requirements of PN EN ISO 15614. Particular attention was paid to the issue of the qualification of welding technology. The samples were subjected to non-destructive testing, i.e. visual and penetrant testing, as well as ultrasonic testing and heat treatment. This was followed by destructive testing, including macroscopic testing and hardness testing. According to the proposed procedure for the recognition of submerged arc welding technology, once the necessary tests had been carried out and the protocols with positive results had been obtained. The documentation had been completed, the analysis needed to obtain certificates of conformity for factory production control and welding quality was carried out.Submerged arc welding is often used for highly responsible butt joints, particularly when joining thick components. This has been achieved through the proper design of the preparation of the parts to be welded and the development of a welding technology that practically eliminates the pre-phase that occurs in traditional technology, thereby eliminating the risk of it affecting the quality of the welded joint.During the implementation of submerged arc welding, a number of technological problems were encountered. The first test joints contained many defects, i.e. sticking and slag inclusions inside the welds. In addition, obtaining welds with the correct profile and removing the slag from the weld groove was difficult. These obstacles were eliminated experimentally by carrying out successive tests using different parameters and welding groove geometries.The correct implementation of any welding process depends on its input parameters. These parameters include welding current, welding speed, welding current, wire diameter, welding voltage and many others. Submerged arc welding (SAW) is widely used in the industry for manufacturing as it is more reliable, provides deep penetration in the work, ensures a smooth finish on objects, and results in high productivity.The technology was developed for a company that manufactures control discs for steam turbines.

show abstract

An Analysis of the Joints’ Properties of Fine-Grained Steel Welded by the MAG and SAW Methods

Cited by 2 publications

References 13 publications

Evaluation of the Properties and Microstructure of Thick-Walled Welded Joint of Wear Resistant Materials

Evaluation of the Properties and Microstructure of Thick-Walled Welded Joint of Wear Resistant Materials

Analysis of the process of qualifying the welding technology of S355JR structural steel using the submerged arc welding method

Contact Info

Product

Resources

About