Estimates of Weldability and Selection of the Optimal Procedure and Technology for Welding of High Strength Steels

Lazić, Vukić; Aleksandrović, Srbislav; Nikolić, Ružica R.; Prokić-Cvetković, Radica; Popović, Olivera; Milosavljević, Dragan; Čukić, Rajko

doi:10.1016/j.proeng.2012.07.100

Cited by 18 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the hardness changed mainly in the HAZ, i.e., the hardness decreased, thus confirming the data collected in the review of the literature [25][26][27]. Also, note that increasing the welding energy, the regions with the lowest hardness increased and the use of filler metal with a similar yield stress to that of the base metal provided a constant microhardness profile without major variations.…”

Section: Profile Of Microhardnesssupporting

confidence: 82%

Optimization of Parameters on Robotized Gas Metal Arc Welding of LNE 700 High-Strength Steel

Lermen

Molin

Berger³

et al. 2018

JMMP

View full text Add to dashboard Cite

The main aim of this study is to determine the best process parameters for the robotized Gas Metal Arc Welding (GMAW) of LNE 700 advanced high-strength steel. This article evaluates some quality criteria such as the microhardness, the heat-affected zone (HAZ) and the convexity in the welded joints. The assays are performed using an experimental design, based on the Taguchi method. The analysis of the results identified some factors of greatest influence and how best to combine them to determine an optimum condition for welding LNE 700 high strength steel. Moreover, the influence of welding parameters on quality criteria is determined.

show abstract

Section: Profile Of Microhardnesssupporting

confidence: 82%

Optimization of Parameters on Robotized Gas Metal Arc Welding of LNE 700 High-Strength Steel

Lermen

Molin

Berger³

et al. 2018

JMMP

View full text Add to dashboard Cite

show abstract

“…Due to the girth gear construction (dimensions and mass) and conditions of the hard-facing execution without the heat treatment, for the filling volume greater than 500 cm 3 , the recommended preheating temperature is within range 100 ºC to 150 ºC. The preheating temperature was determined according to Seferian's formula [25][26].…”

Section: Hsc C S P Si Nimentioning

confidence: 99%

An Example of Reparatory Surface Welding of the Mining Machine Vital Part

Arsić¹,

Nikolić²,

Lazić³

et al. 2021

Communications

View full text Add to dashboard Cite

Mining machines' components, or the whole structure, are prone to frequent premature damages and fractures what is explained either by inadequate design and construction or by insufficient knowledge of the material's and welded joints' properties and oversights in manufacturing. Here is considered the bucket-wheel excavator, i.e. the fracture of the tooth of the girth gear, which enables the circular motion of the excavator's upper structure (which was in operation for 5000 hours). The gear was made of the cast steel GS 40 MnCrSi3 V. The reparatory hard-facing (HF) technology of the fractured tooth required specification of numerous operations including the preparation works. The reparation realized the two-fold savings, in time and money - the new girth gear costs over 500 000 € and its manufacturing lasts 6 to 9 months, while the safety and quality of the repaired tooth was guaranteed.

show abstract

“…Vukić et al in reference [2] stated that existing, very scarce and often unclear and insufficient recommendations for selection of the optimal welding technology are one of the causes of large number of flaws in welded joints. It is concluded that mentioned problems, can be successfully solved by proper selection of the procedure, filler metal and technology of welding, verified by experiments conducted in laboratory or in real operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of welding on mechanical and microstructural characteristics of high-strength low-alloy steel joints

Ilić

Ivanović

Josifović

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

View the article online for updates and enhancements. Related contentEffect of superheat on macrostructure and macrosegregation in continuous cast lowalloy steel slabs T Pikkarainen, V Vuorenmaa, I Rentola et al.Effect of long-term thermal aging on magnetic hysteresis for low-alloy pressure vessel steel Satoru Kobayashi, Ferenc Gillemot, Ákos Horváth et al. Abstract. In this paper effects of welding on mechanical and microstructural characteristics of high-strength low-alloy steel joints is presented. Testing was done at models prepared with Vgroove butt joints that are done by two different welding processes. Considered welding processes were done by MMA or MIG for root pass and MAG for other passes with related consumables. Experimentally determined basic mechanical characteristics were put in correlation to relate ones that were numerically calculated. The experimentally obtained yield strength and tensile strength showed that welding process MMA/MAG provide better mechanical properties then MIG/MAG. It is implicated that selection of welding process at high-strength low-alloy steels is multi criterion analysis. If only proper welding is obtained, applications of high-strength low-alloy steel are adequate. Those applications caused specific problems related to its specific characteristics and properties especially weldability. As welding processes can be analysed from different aspects, selection of specific welding process at high-strength low-alloy steel are more complex.

show abstract

Estimates of Weldability and Selection of the Optimal Procedure and Technology for Welding of High Strength Steels

Cited by 18 publications

References 1 publication

Optimization of Parameters on Robotized Gas Metal Arc Welding of LNE 700 High-Strength Steel

Optimization of Parameters on Robotized Gas Metal Arc Welding of LNE 700 High-Strength Steel

An Example of Reparatory Surface Welding of the Mining Machine Vital Part

Effects of welding on mechanical and microstructural characteristics of high-strength low-alloy steel joints

Contact Info

Product

Resources

About