Volume 20, Issue 9 (September 2020)
Modares Mechanical Engineering 2020, 20(9): 2255-2262 |
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Hosseinzadeh Salehkouh S, Babaei H, Mirzababaie Mostofi T. Spot Welding of Steel Plates Using Gas Mixture Detonation Technique: An Experimental Study. Modares Mechanical Engineering 2020; 20 (9) :2255-2262
URL: http://mme.modares.ac.ir/article-15-43453-en.html
URL: http://mme.modares.ac.ir/article-15-43453-en.html
1- Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran
2- Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran ,ghbabaei@guilan.ac.ir
3- Department of Mechanical Engineering, Faculty of Electrical, Computer and Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran
2- Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran ,
3- Department of Mechanical Engineering, Faculty of Electrical, Computer and Mechanical Engineering, University of Eyvanekey, Eyvanekey, Iran
Abstract: (1646 Views)
Spot welding process due to its ability to create a qualitative connection between metal plates and the absence of restrictions on old welding methods such as the impossibility of welding metals by many differences in their melting point is considered as one of the fastest and most economical methods. In this method, an atomic bonding is created on the surface of plates due to high-velocity impact and metal plates are welded together. In the present study, a gas mixture detonation set up was used to perform the impact spot welding tests. Also, the steel plate with a thickness of 4mm was considered as a base plate and steel plates with 1, 2, and 3mm thickness were used as front layers. They were under direct contact with flat- and spherical-nosed metallic projectiles with a mass of 650 and 1300g, respectively. The diameter of the projectiles was 25mm and the average velocity was 600 meters per second. To study the morphology of the weld interface in impact spot welding, the interface of the welds was studied using scanning electron microscope (SEM). Also, the effect of flyer plate thickness and stand-off distance on the spot welding of plates due to projectile impact was studied. The results showed that by increasing the thickness of the flyer plate, the formation of a damaged central area will be decreased. The results also confirmed that when higher stand-off distance was utilized, the velocity of impact was not sufficient to create continuous weld.
Keywords: Bonding in the Solid Phase, Impact Spot Welding, Scanning Electron Microscope, Gas Mixture Detonation Technique
Article Type: Original Research |
Subject:
Metal Forming
Received: 2020/06/6 | Accepted: 2020/06/23 | Published: 2020/09/20
Received: 2020/06/6 | Accepted: 2020/06/23 | Published: 2020/09/20
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