scholarly journals Manufacture of a Home-Made Spot Welding Machine from Household Electronic Waste

2021 ◽  
Vol 4 (2) ◽  
pp. 71-74
Author(s):  
Tamás Bíró ◽  
József Bálint Renkó
Keyword(s):  
Welded Joints ◽  
Spot Welding ◽  
Electronic Waste ◽  
Engineering Approach ◽  
Welding Machine ◽  
Wide Range ◽  
Spot Welded ◽  
At Home

Abstract Nowadays, spot-welding technologies are being used on a very wide range of applications. Spot-welded joints can be found in many pieces of equipment, such as toasters, computers, telephone batteries, or even in various pre-manufactured car elements. Given the prevalence of the technology, there may be a legitimate need for a machine that can be used at home for simple spot-welding operations. Such a device could be produced more cost-effectively than those currently available on the market, while using household electronic waste. These could be produced for hobby purposes, thus creating an opportunity to recycle certain types of household electronic waste, thereby improving sustainability in an engineering approach.

Assessment of Fatigue Life by FEMFAT on the Weld Configuration of Spot Welding

2008 ◽  
Vol 580-582 ◽  
pp. 625-628
Author(s):  
Bok Kyu Lim ◽  
Min Gun Kim ◽  
Ku Hyun Chung ◽  
Dong Youl Kim ◽  
Young Woo Choi
Keyword(s):  
Welded Joints ◽  
Spot Welding ◽  
Fatigue Behavior ◽  
Tensile Load ◽  
Design Criterion ◽  
Element Analysis ◽  
Single Spot ◽  
Welding Joints ◽  
The Stability ◽  
Spot Welded

The stability of plate structure is a very critical problem. The spot welding is practically designed by experiential decisions; so, it is inefficient and risks fatigue fracture. In real structure, multi-spot welded joints are more frequently used than single-spot welded joint. The fatigue behavior of multi-spot welded joints is different from that of single-spot welded joints. The fatigue lives of spot-welding specimen and multi points spot-welding structure are predicted using a FEMFAT 4.4e based on the linear finite element analysis. It is necessary to establish a reasonable and systematic design criterion for the long life design of the spot-welding body structure. In this study, relative location of spot welding was chosen as parameter and the stress distribution around the spot-welding joints’ subjected tensile load was numerically analyzed.

Influence of Welding Parameters on the Quality of Resistance Spot Welded Joints of DP600 Steels

2014 ◽  
Vol 635 ◽  
pp. 143-146 ◽  
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Ivan Gajdoš
Keyword(s):  
Automotive Industry ◽  
Automobile Industry ◽  
Welded Joints ◽  
Spot Welding ◽  
Welding Current ◽  
High Strength ◽  
Welding Parameters ◽  
Resistance Spot ◽  
Resistance Spot Welds ◽  
Spot Welded

Advanced high-strength dual-phase steel was developed specifically for automotive industry in order to benefit from its excellent formability and great crash absorption ability in comparison with conventional AHSS. Resistance spot welding is the dominant and effective method of joining metal sheets in automobile industry. After spot welding, important changes occur in mechanical and metallurgical properties of the spot welded areas and heat affected zones. The investigation into these changes is very important for safety, which depends on the strength of the welded joints. Weldability of the DP steel is one of the key factors governing its application in automotive industry. The influence of the primary welding parameters, especially welding current, on the weld quality was investigated by testing microhardness and tensile shear load bearing capacity of resistance spot welds of DP600 steel sheets.

scholarly journals Numerical and Experimental Study of AlSi Coating Effect on Nugget Size Growth in Resistance Spot Welding of Hot-Stamped Boron Steels

2021 ◽  
Vol 5 (1) ◽  
pp. 10
Author(s):  
Ali Afzal ◽  
Mohsen Hamedi ◽  
Chris Valentin Nielsen
Keyword(s):  
Welded Joints ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Focal Point ◽  
The Body ◽  
Weld Nugget ◽  
Boron Steel ◽  
Resistance Spot ◽  
Boron Steels ◽  
Spot Welded

In recent years, increasing automotive safety by improving crashworthiness has been a focal point in the automotive industry, employing high-strength steel such as press hardenable steel (PHS). In addition to the improved strength of individual parts in the body of the vehicle, the strength of the resistance-spot-welded joints of these parts is highly important to obtain a safe structure. In general, dimensions of weld nuggets are regarded as one of the criteria for the quality of spot-welded joints. In the presented research, a three-dimensional axisymmetric finite element model is developed to predict the nugget formation in resistance spot welding (RSW) of two types of PHS: the uncoated and AlSi-coated 1.8 mm boron steel after hot stamping. A fully coupled electro-thermo-mechanical analysis was conducted using the commercial software package Abaqus. The FE predicted weld nugget development is compared with experimental results. The computed weld nugget sizes show good agreement with experimental values.

Ultrasonic Nondestructive Testing on False Welding Joint of Spot Welding for 00Cr18Ni10N Stainless Steel

2013 ◽  
Vol 662 ◽  
pp. 366-371
Author(s):  
Yong Zhang ◽  
Zong Fang Liu ◽  
Hong Xia Xie ◽  
Lian Zhi Guo
Keyword(s):  
Stainless Steel ◽  
Nondestructive Testing ◽  
Welded Joints ◽  
Spot Welding ◽  
Welded Joint ◽  
Test Method ◽  
Transmitted Wave ◽  
Ultrasonic Nondestructive Testing ◽  
Digital Oscilloscope ◽  
Spot Welded

00Cr18Ni10N stainless steel spot-welded joints were inspected by ultrasound in transmission mode under the water. By comparing and studying ultrasonic transmission wave signals of the spot welded joint of existing nugget and the false welded joint which were received by digital oscilloscope, we find that there are differences in degree of attenuation between multi transmitted wave and primary transmitted wave of two kinds of joints. The degree of attenuation of multi transmitted wave of false welded joint is obviously less than that of the joint with nugget. Therefore, false welded joint can be judged and identified through the degree of attenuation of multi transmitted wave relative to primary transmitted wave, and the dissection results verify the feasibility of this test method.

Fatigue strength of hot-stamped spot welded joints*—study on spot welding tailored blank technology

2018 ◽  
Vol 32 (4) ◽  
pp. 264-273
Author(s):  
Hiroki Fujimoto ◽  
Hideki Ueda ◽  
Eisuke Nakayama ◽  
Rintaro Ueji ◽  
Hidetoshi Fujii
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Spot Welding ◽  
Tailored Blank ◽  
Spot Welded
Sign in / Sign up

Export Citation Format

Share Document