Underwater Explosive Welding of Thin Magnesium Plate onto some Metal Plates

2007 ◽  
Vol 566 ◽  
pp. 303-308
Author(s):  
Akihisa Mori ◽  
Kazuyuki Hokamoto ◽  
Masahiro Fujita
Keyword(s):  
Explosive Welding ◽  
Experimental Results ◽  
Welding Condition ◽  
Metal Plates ◽  
Wavy Interface ◽  
Welding Technique

Explosive welding of a thin magnesium plate onto some metal plates was performed by using underwater explosive welding technique developed by some of the authors. The experimental results show that the wavy interface which is typically found in the well-bonded clad was observed. The welding condition is discussed using the welding window based on the numerically simulated results using AUTODYN-2D code.

Explosive Welding of Molybdenum/Copper Using Underwater Shock Wave

2012 ◽  
Vol 706-709 ◽  
pp. 735-740 ◽  
Author(s):  
Palavesamuthu Manikandan ◽  
Joo Noh Lee ◽  
Akihisa Mori ◽  
Kazuyuki Hokamoto
Keyword(s):  
Shock Wave ◽  
Explosive Welding ◽  
Microstructural Characterization ◽  
Visual Observation ◽  
Underwater Shock Wave ◽  
Wavy Interface ◽  
Underwater Shock ◽  
Weldability Window ◽  
The Right ◽  
Welding Technique

In this research, surface modification of copper with molybdenum was made using explosive welding technique. The underwater shock waves derived from the detonation of explosives was used to bond thin films of molybdenum on copper. Visual observation shows a sound joining of Mo/Cu. Microstructural characterization reveals the bonding interface with a clear wave formation between the participant metals. A clear wavy interface is formed when the weldable conditions lie in the weldability window. When the weldable conditions lie near the right limit or lower limit, a jet trapped region was formed.

Explosive Welding Using Underwater Shock Wave Generated by the Detonation of the Detonating Code

2011 ◽  
Vol 673 ◽  
pp. 265-270 ◽  
Author(s):  
Akihisa Mori ◽  
Li Qun Ruan ◽  
Kazumasa Shiramoto ◽  
Masahiro Fujita
Keyword(s):  
Shock Wave ◽  
Sound Velocity ◽  
Detonation Velocity ◽  
Explosive Welding ◽  
New Method ◽  
Underwater Shock Wave ◽  
Metal Plates ◽  
Experimental Parameters ◽  
Underwater Shock ◽  
Point Velocity

Detonating code is a flexible code with an explosive core. It is used to transmit the ignition of explosives with high detonation velocity in the range of 5.5 to 7 km/s. However, it is difficult to use detonating code for the explosive welding of common metals since the horizontal point velocity usually exceeds the sound velocity. Hence, in the present work, a new method using underwater shock wave generated by the detonation of detonating code was tried. The details of the experimental parameters and the results are presented. From the results it is observed that the above technique is suitable to weld thin metal plates with relatively less explosives.

scholarly journals Simulation and automation of aluminium panel shot peen forming

2022 ◽  
Author(s):  
Vladislav Sushitskii ◽  
Pierre-Olivier Dubois ◽  
Hong Yan Miao ◽  
Martin levesque ◽  
Frederick Gosselin
Keyword(s):  
Shot Peening ◽  
Pattern Generation ◽  
Experimental Results ◽  
Shape Model ◽  
Peen Forming ◽  
Metal Plates ◽  
Airplane Wing ◽  
Aluminum Plates ◽  
Doubly Curved

We present a methodology for automated forming of metal plates into freeformshapes using shot peening. The methodology is based on a simulation softwarethat computes the peening pattern and simulates the effect of its application.The pattern generation requires preliminary experimental characterizationof the treatment. The treatment is applied by a shot peening robot. The program for the robot is generated automatically according to the peening pattern. We validate the methodology with a series of tests. Namely, we form nine aluminum plates into doubly curved shapes and we also shape model airplane wing skins. The article describes the complete workflow and the experimental results.

Research on the Welding Technique of Quenching and Tempering Steel

2013 ◽  
Vol 659 ◽  
pp. 36-38 ◽  
Author(s):  
Bi Xin Guo ◽  
Xiao Wei Du
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Tig Welding ◽  
Aircraft Maintenance ◽  
Performance Tests ◽  
Welding Condition ◽  
Final Treatment ◽  
And Performance ◽  
Quenching And Tempering ◽  
Welding Technique

This paper discusses welding technique of quenching and tempering steel after final treatment, and raises a composite welding technique and its corresponding welding condition by combining SMAW and TIG welding. Finally, technical experiments and performance tests have been done on typical parts of high strength steel, the results are satisfactory and indicate that it may be used in aircraft maintenance.

Underwater Explosive Welding Using Detonating Code

2012 ◽  
Vol 706-709 ◽  
pp. 763-767 ◽  
Author(s):  
Akihisa Mori ◽  
Ayumu Fukushima ◽  
Kazumasa Shiramoto ◽  
Masahiro Fujita
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Sound Velocity ◽  
Detonation Velocity ◽  
Explosive Welding ◽  
Experimental Setup ◽  
Underwater Shock Wave ◽  
Welding Method ◽  
Metal Plates ◽  
Underwater Shock

Detonating code, which is a flexible code with an explosive core, is normally used to transmit the ignition of explosives with high detonation velocity 6 km/s. Therefore it is difficult to use detonating code for the explosive welding of common metals toward the detonating direction since the welding velocity exceeds the sound velocity of metals. Hence, an explosive welding method using underwater shock wave generated by the detonation of detonating code was tried. In the present investigation, the details of the experimental setup and results are reported. And the welding conditions are discussed through numerical simulation. From these results it is observed that the above technique is suitable to weld thin metal plates with relatively less explosives.

A Study on the Explosive Welding of Three-Layer Panel

2014 ◽  
Vol 926-930 ◽  
pp. 354-357 ◽  
Author(s):  
Mian Jun Duan ◽  
Yao Hua Wang ◽  
Jin Hong ◽  
Jing Rong Zhou ◽  
Rui Ma
Keyword(s):  
Explosive Welding ◽  
Composite Panel ◽  
Titanium Plate ◽  
Alloy Plate ◽  
Metallurgical Bonding ◽  
Layer Composite ◽  
Shearing Strength ◽  
Wave Morphology ◽  
Moderate Condition ◽  
Welding Technique

Using an adjusted explosive welding technique, a Zr-2 alloy plate, a titanium plate and a carbon steel plate were cladded to form a three-layer composite panel which is difficult to manufacture by common methods. Microstructural evaluations reveal that a metallurgical bonding interface with wave morphology is realized, and the grains near the interface are smaller than grains in other areas. The microhardness of the sample near the interface is greatly higher than that of other areas. Furthermore, mechanical experimental evidence indicates the shearing strength of the interface in the moderate condition exceeds that of the interlayer plate.

Explosive welding of metal plates

2008 ◽  
Vol 202 (1-3) ◽  
pp. 224-239 ◽  
Author(s):  
S.A.A. Akbari-Mousavi ◽  
L.M. Barrett ◽  
S.T.S. Al-Hassani
Keyword(s):  
Explosive Welding ◽  
Metal Plates

POSSIBILITY OF UNDERWATER EXPLOSIVE WELDING FOR MAKING LARGE-SIZED THIN METAL PLATE CLAD BY OVERLAPPING PLATES

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1647-1652 ◽  
Author(s):  
KAZUYUKI HOKAMOTO ◽  
AKIHISA MORI ◽  
MASAHIRO FUJITA
Keyword(s):  
Explosive Welding ◽  
Welding Process ◽  
Metal Plate ◽  
304 Stainless Steel ◽  
Thin Plates ◽  
Underwater Shock Wave ◽  
Welding Condition ◽  
Inconel 600 ◽  
Size Limitation ◽  
Metal Jet

The authors have developed a new method of explosive welding using underwater shock wave for the welding of thin plate on a substrate. Considering the size limitation of the welding area in using the technique, the possibility of overlapping thin plates to make large-sized welding area is investigated. In general, the results for the welding of Inconel 600 on 304 stainless steel show a macroscopically successful weld, but the microstructure shows some melting spots caused due to the trapping of metal jet during the welding process when the welding condition is changed. The welding process is discussed based on the experimental results in comparison with some numerically simulated results obtained by AUTODYN-2D code.

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