Results 31 to 40 of about 75,293 (304)

Evaluation of Mechanical Properties and Microstructure for Laser Deposition Process and Welding Process [PDF]

, 2006
Laser Aided Manufacturing Process (LAMP) can be applied to repair steel die/molds which are currently repaired using traditional welding process in industry.
Anand, Jambunathan, Bao, Yaxin, Liou, Frank, Newkirk, Joseph, Ruan, Jianzhong, Sparks, Todd E.   +5 more
core   +2 more sources

Determination of residual stress evolution during repair welding of high-strength steel components

Forces in Mechanics, 2022
During the assembly of steel structures, unacceptable weld defects may be found. An economical solution is local thermal gouging of the affected areas and re-welding.
Becker Amadeus, Schroepfer Dirk, Kromm Arne, Kannengiesser Thomas   +3 more
doaj   +1 more source

Experimental Research and Numerical Simulation of Weld Repair with High Energy Spark Deposition Method

Metals, 2020
For long-serviced pressure equipment that is under severe working conditions such as a high temperature, high pressure, and corrosion, the material properties and structure will be unavoidably damaged or degraded, especially cracks and other damages at ...
Yingjie Zhang, Kai Yang, Jianping Zhao
doaj   +1 more source

Three dimensional multi-pass repair weld simulations [PDF]

International Journal of Pressure Vessels and Piping, 2005
Full 3-dimensional (3-D) simulation of multi-pass weld repairs is now feasible and practical given the development of improved analysis tools and significantly greater computer power. This paper presents residual stress results from 3-D finite element (FE) analyses simulating a long (arc length of 62°) and a short (arc length of 20°) repair to a girth ...
Elcoate, C. D., Dennis, R. J., Bouchard, P. J., Smith, M. C.   +3 more
openaire   +2 more sources

STRUCTURAL THERMAL TRANSIENT NUMERICAL ANALYSIS OF RESIDUAL STRESSES IN CYLINDRICAL PRESSURE VESSELS SUBMITTED TO WELD REPAIR ACCORDING TO STANDARD ASME PCC-2-2015

Holos, 2021
This paper presents the calculation of residual stresses present in cylindrical pressure vessels subjected to weld repairs using the ASME PCC-2-2015 via numerical multiphysical thermal structural analysis using the finite element method.
Jayann Ismar Lira Almeida, Marcelo Cavalcanti Rodrigues, Paula Frassinetti Cavalcante   +2 more
doaj   +1 more source

Effect of Cold Metal Transfer Welding Repair Parameters on the Forming for the Repair of Surface Defects of Cast Magnesium Alloy

Crystals
It is of great significance in the field of engineering to repair the surface defects of ZM6 cast magnesium alloy by an arc welding method. Compared with the traditional tungsten inert gas (TIG) welding repair technology, cold metal transfer (CMT ...
Zenghui Cai, Faming Shen, Qihao Chen, Zhien Chen, Yanfeng Cui, Tongge Shao, Bolun Dong, Sanbao Lin, Xiaoyu Cai   +8 more
doaj   +1 more source

Effect of initial residual stress on mechanical properties of ZTC4 titanium alloy

Cailiao gongcheng
The microstructure， tensile fracture morphology and initial residual stress of ZTC4 titanium alloy repair welding are analyzed by stereomicroscope， optical microscope （OM）， scanning electron microscope （SEM）， X-ray residual stress analyzer and tensile ...
LUO Jun, WANG Xi, ZHAO Wenzheng, NAN Hai, LIU Changkui, LI Nan   +5 more
doaj   +1 more source

Introducing Compressive Residual Stresses into a Stainless-Steel T-Pipe Joint by an Overlay Weld

Metals, 2021
Microcracks are always present in the deposited metal of nickel-based alloys and austenitic stainless steels, which affects the safety of the pressure pipes.
Qibao Chu, Xiaofei Kong, Wei Tan
doaj   +1 more source

Problems in repair-welding of duplex-treated tool steels [PDF]

Metalurgija, 2009
The present paper addresses problems in laser welding of die-cast tools used for aluminum pressure die-castings and plastic moulds. To extend life cycle of tools various surface improvements are used.
T. Muhič, J. Tušek, M. Pleterski, D. Bombač   +3 more
doaj  

Investigation of residual stresses in welded joints of heat-resistant magnesium alloy ML10 after electrodynamic treatment

Journal of Magnesium and Alloys, 2016
In repair of aircraft structures of magnesium alloy ML10, the argon arc non-consumable electrode welding is used. In this case, the residual welding stresses occur in repair welds, being one of the causes for reducing the service characteristics of the ...
L.M. Lobanov, N.A. Pashchin, O.L. Mikhodui, J.A. Khokhlova   +3 more
doaj   +1 more source