Welding supports of fine-grained steel mobile platforms

2020 ◽  
Vol 92 (6) ◽  
pp. 17-22
Author(s):  
Abilio Silva ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Adam Jurek
Keyword(s):  
Tensile Strength ◽  
Civil Engineering ◽  
High Strength ◽  
High Tensile Strength ◽  
Mobile Platforms ◽  
Lower Strength ◽  
Fine Grained ◽  
Fine Grain ◽  
Movable Platform ◽  
Fine Grained Steels

The article presents the process of welding of steel movable platform supports. There is a growing demand for the welding of difficult-to-weld fine grain steels used in civil engineering and transport. An example of this could be the use of high-strength movable platform supports. The recently used material in the production of movable platform supports are fine-grained steels due to their high tensile strength of 1000 MPa. The joints formed using them, however, are characterized by much lower strength than the native material. In this article, the most appropriate parameters were selected for welding the movable platform supports made of difficult-to-weld fine-grained steel S960 MC.

scholarly journals Welding of mobile elevating work platforms

2019 ◽  
Vol 91 (6) ◽  
pp. 15-20
Author(s):  
Abilio Silva ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Adam Jurek
Keyword(s):  
Tensile Strength ◽  
Civil Engineering ◽  
Mobile Platform ◽  
Motor Vehicles ◽  
High Tensile Strength ◽  
Mobile Platforms ◽  
Lower Strength ◽  
Operating Range

The demand for new welding technologies in civil engineering and transport is increasing. An example of this is the tendency to increase the operating range of a mobile platform mounted on motor vehicles while maintaining the weight of the vehicle. The most commonly used material in the production of mobile platforms are AHSS steels due to their high tensile strength at the level of 1400 MPa. However, the joints created with their use are characterized by much lower strength than the native material. In this article, the most appropriate parameters for welding elements of a mobile platform from difficult-to-use steel AHSS were selected.

The Development of Annealing Time for Super Fine Grain and High Strength IF Steel

2013 ◽  
Vol 631-632 ◽  
pp. 613-616 ◽  
Author(s):  
Hong Mei Zhang ◽  
Li Feng Qiao
Keyword(s):  
Tensile Strength ◽  
High Strength ◽  
Strain Ratio ◽  
Continuous Annealing ◽  
High Tensile Strength ◽  
Plastic Strain Ratio ◽  
Fine Grain ◽  
New Type ◽  
High Strength If Steel ◽  
Annealing Experiments

The hot rolling, cold rolling and simulative continuous annealing experiments were carried out in the laboratory on the base of new type SFG HSS (super fine grain, high strength steel sheet). The results show that the microstructure which contains a number of cake shaped grain can be refined and homogenized by the feasible annealing holding time. Contrast to the conventional steel, the SFG steel have the characters of super fine grain, high tensile strength, low yield strength/tensile strength rate, good elongation and high r-value high（the plastic strain ratio）．

scholarly journals Welding of DOCOL 1200M using micro-jet cooling

2020 ◽  
Vol 92 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Abilio Silva ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Adam Jurek
Keyword(s):  
Tensile Strength ◽  
Welded Joint ◽  
High Strength ◽  
High Tensile Strength ◽  
Lower Strength ◽  
Plastic Properties ◽  
Supporting Structure ◽  
Jet Cooling

In welding elements of the supporting structure of the means of transport, attention is paid to the high strength and good plastic properties of the welded joint. In the construction of transport means, DOCOL 1200M  steel from the AHSS group is increasingly used due to their high tensile strength of steel at the level of 1200 MPa. The welds have much lower strength than the native material. In this paper, it was decided to check the weldability of  DOCOL 1200M steel with the use of micro-jet cooling

Engineering Characteristics of Concrete Made of Desert Sand from Maowusu Sandy Land

2012 ◽  
Vol 174-177 ◽  
pp. 604-607 ◽  
Author(s):  
Bao Hong Jin ◽  
Jian Xia Song ◽  
Hai Feng Liu
Keyword(s):  
High Strength Concrete ◽  
Civil Engineering ◽  
High Strength ◽  
Fine Aggregate ◽  
Sandy Land ◽  
Strength Concrete ◽  
Engineering Characteristics ◽  
Desert Sand ◽  
Fine Grain ◽  
Engineering Requirement

The desert sand from Maowusu sandy land is very fine aggregate. Currently, there are no national specifications concerning the application of desert sand with very fine grain. To apply the desert sand to concrete in civil engineering, concrete specimens made of the desert sand had been tested in order to clarify its engineering characteristics. On the basis of determined chemical composition and physical characteristics of the desert sand, the mechanical properties of concrete made of fine aggregate from Maowusu sandy land were investigated. The results of the tests indicated that the desert sand could be used as a fine aggregate in concrete for general civil engineering. At the same time, the desert sand was used to confect high strength concrete, the strength and workability of which met general engineering requirement, which provided references for high strength concrete preparation in these regions

Production and Use of the Textile Reinforced Concrete

2014 ◽  
Vol 982 ◽  
pp. 59-62 ◽  
Author(s):  
Filip Vogel
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Reinforced Concrete ◽  
High Strength ◽  
Cement Matrix ◽  
High Tensile Strength ◽  
Textile Reinforced Concrete ◽  
Corrosion Resistant ◽  
New Material ◽  
Ductile Behavior

This article discusses about the textile reinforced concrete. The textile reinforced concrete is a new material with great possibilities for modern construction. The textile reinforced concrete consists of cement matrix and textile reinforcement of high strength fibers. This combination of cement matrix and textile reinforcement is an innovative combination of materials for use in the construction. The main advantage of the textile reinforced concrete is a high tensile strength and ductile behavior. The textile reinforced concrete is corrosion resistant. With these mechanical properties can be used textile reinforced concrete in modern construction.

Optimisation of V/N Ratios and Stelmor Cooling for Electric Arc Furnace Steels Used in Galvanised High Tensile Strength Wire Applications

2005 ◽  
Vol 500-501 ◽  
pp. 745-752
Author(s):  
Andrew Wallace ◽  
Allan Brownrigg ◽  
Peter D. Hodgson ◽  
Leo Frawley ◽  
Warwick Heath
Keyword(s):  
Tensile Strength ◽  
High Strength Steels ◽  
High Strength ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Vanadium Nitride ◽  
Arc Furnace ◽  
High Tensile Strength ◽  
Major Factors ◽  
High Level

The high level of residual nitrogen in Electric Arc Furnace (EAF) steels is one of the major factors influencing the performance of the finished product. For high tensile strength galvanised wire applications, nitrogen in interstitial solid solution can severely limit drawability and formability. This problem can be controlled simply and effectively by adding nitride-forming elements to the molten steel so that the nitrogen is removed from solution. Vanadium additions are especially beneficial in high strength steels because the removal of nitrogen as vanadium-nitride can cause extensive precipitation strengthening. This investigation concerns commercial grade steels microalloyed with vanadium and rolled to 5.5mm rod, under controlled Stelmor cooling conditions. This rod is used to produce 2.5mm high tensile strength galvanised wire. The aim of the research was to determine the optimum vanadium/nitrogen (V/N) ratio and Stelmor cooling profile for the vanadium steel rod. This was achieved by extensive production and laboratory trials followed by mechanical and microstructural analyses of the product.

scholarly journals Modulation of Multiple Precipitates for High Strength and Ductility in Al-Cu-Mn Alloy

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7383
Author(s):  
Linxiang Liu ◽  
Zhijun Wang ◽  
Qingfeng Wu ◽  
Zhongsheng Yang ◽  
Kexuan Zhou ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Tensile Strength ◽  
High Strength ◽  
Mechanical Behaviors ◽  
High Tensile Strength ◽  
Transmission Electron ◽  
Evolution Pattern ◽  
Elongation To Failure ◽  
High Elongation ◽  
Strength And Ductility

The category and morphology of precipitates are essential factors in determining the mechanical behaviors of aluminum alloys. It is a great challenge to synthetically modulate multiple precipitates to simultaneously improve strength and ductility. In the present work, by optimizing the precipitations of the GP zone, θ’-approximant and θ’ phase for an Al-Cu-Mn alloy, a high tensile strength of 585 MPa with large elongation of 12.35% was achieved through pre-deformation and aging. The microstructure evolution pattern was revealed by detailed characterizations of scanning electron microscopy and transmission electron microscopy. It was found that such high tensile strength of the samples was due to a combination of strengthening by the high density of dispersive fine precipitates and dislocations, and the high elongation to failure was primarily attributed to the multimodal precipitates and elimination of precipitation-free zones along the grain boundaries. The strategy proposed here is a promising way of preparing ultra-strong Al-Cu-Mn alloys.

scholarly journals Welding supports of pins in mobile platforms

2020 ◽  
Vol 92 (4) ◽  
pp. 25-29
Author(s):  
Abilio Silva ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Adam Jurek ◽  
Krzysztof Ireneusz Wilczyński
Keyword(s):  
Chemical Composition ◽  
Heat Affected Zone ◽  
High Strength ◽  
Welding Parameters ◽  
Filler Materials ◽  
Mobile Platforms ◽  
Varying Thickness ◽  
Welding Defects ◽  
Movable Platform ◽  
Selection Of

The demand for mixed joints of hard-welded steels used in civil engineering and transport is increasing. An example of this can be welding of pins of high-strength steel S690 QL (1.8928) with the arms of a movable platform made of DOCOL 1200M steel from the AHSS group. This joint is difficult to make properly, due to significant differences in the thickness of welded elements and different chemical composition of both steels. The thickness of the cylindrical pin is 40 mm, the diameter of the pin is 50 mm. The thickness of the metal sheet used for the mobile platform arm is 2 mm. . Joints of varying thickness and chemical composition may have cracks in the heat affected zone and in the weld. The purpose of the article is to determine the most appropriate welding parameters and the selection of filler materials that will allow to obtain the correct joint without welding defects.

ALDUR 700Q, QL, QL1

Alloy Digest ◽  
2019 ◽  
Vol 68 (11) ◽  
Keyword(s):  
Yield Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Low Temperatures ◽  
High Strength ◽  
Fine Grained ◽  
Fine Grained Steels ◽  
Minimum Yield

Abstract Aldur® 700 steels (minimum yield strength of 700 MPa, or 102 ksi, for thicknesses up to 50 mm, or 2 in.) are a part of a family of water-quenched, high-strength, fine-grained steels that have excellent toughness at low temperatures. This datasheet provides information on composition, physical properties, and tensile properties. Filing Code: SA-855. Producer or source: Voestalpine Grobblech GmbH.

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