scholarly journals Resistance spot weld bonding of steel sheets

2019 ◽  
Vol 91 (10) ◽  
pp. 25-33
Author(s):  
Szymon Kowieski ◽  
Jolanta Matusiak
Keyword(s):  
Spot Welding ◽  
Adhesive Bonding ◽  
Construction Materials ◽  
Surface Preparation ◽  
Epoxy Adhesive ◽  
Technological Parameters ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Industrial Sectors ◽  
Resistance Spot Weld

The use of innovative resistance welding methods with bonding for joining construction materials opens new possibilities in expanding ranges of combined materials in various industrial sectors. The article presents the results of experiments of resistance spot welding-adhesive bonding, using the weld-through technique. The influence of welding conditions (technological parameters of welding) and adhesive bonding conditions (method of surface preparation, size and thickness of the overlap during bonding) on the process of creating hybrid connections is presented. The tests combined DC01 steel sheets without protective coverings and DP 600 with Z140 zinc protective coating and designed for applications in the automotive industry one-component epoxy adhesive was used.

scholarly journals Resistance Spot Weld assisted with Adhesive Bonding

2019 ◽  
Vol 8 (4) ◽  
pp. 6978-6982
Keyword(s):  
Spot Welding ◽  
Adhesive Bonding ◽  
Sheet Thickness ◽  
Adhesive Layer ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Spot Weld ◽  
Low Carbon ◽  
Weld Bonding ◽  
Resistance Spot

This paper presents an experimental investigation of the weld bonding of low carbon steel (JIS G3141) together with adhesive layers to increase the mechanical properties of weld bonding. Epoxy adhesive was used in this research applied on the sheet thickness of 1.2 mm. The weld-bonding was carried out by applying layer of adhesive followed by resistance spot welding on surface samples. The relative properties and characteristics of the resulting weld-bonded-adhesive joints are evaluated and compared with the conventional spot-welding through tensile-shear, peel, hardness tests and macro-etching observations. The strength of weld bond joints was calculated and compared with those in as-weld and adhesive-bond joints. Results showed that the strength of weld-bond adhesive is higher than as-weld specimen. The hardness distribution of weld bond adhesive joints was investigated, at three regions i.e. base metal (BM), the heat-affected zone (HAZ), and the fusion zone (FZ) using micro-hardness Vickers machine. It can conclude that the presence of adhesive does not affect the hardness of weld-bonded. From macro- etching observation, the layer adhesive influenced the weld bond via the size nugget of weld-bonded which is smaller than as-weld. The introduction of adhesive layer in spot welding improves the joint strength and quality of spot weld.

scholarly journals Tests of Technological Conditions of the Resistance Welding and Adhesive Bonding of Coated Steel Sheets

2021 ◽  
pp. 17-30
Author(s):  
Szymon Kowieski ◽  
Jolanta Matusiak
Keyword(s):  
Isopropyl Alcohol ◽  
Adhesive Bonding ◽  
Protective Coatings ◽  
Adhesive Layer ◽  
Organic Coating ◽  
Epoxy Adhesive ◽  
Bonded Joints ◽  
Technological Parameters ◽  
Steel Sheets ◽  
Adhesive Bonded Joints

The article presents the effect of welding technological parameters and adhesive bonding conditions (surface processing, overlap dimensions and the thickness of the adhesive layer) on the formation of hybrid (welded-adhesive bonded) joints of steel sheets provided with protective coatings. The tests involved the joining of sheets made of steel HC340LA. The sheets made of steel HC340LA (provided with a ZE50/50 Granocoat ZE two-layer organic coating) were in the as-received state and after cleaning with isopropyl alcohol. The tests also involved sheets made of steel 22MnB5 provided with an AlSi coating. The sheets made of steel 22MnB5 were subjected to heat treatment, cleaning with isopropyl alcohol, roughening and etching in similar configurations. The adhesive bonding process was performed applying one-component epoxy adhesive (used in the automotive industry).

Experimental investigation on resistance spot welding of dissimilar weld joints

2020 ◽  
pp. 095440892096835
Author(s):  
Rohit Verma ◽  
Kanwer Singh Arora ◽  
Lochan Sharma ◽  
Rahul Chhibber
Keyword(s):  
Welding Process ◽  
High Strength ◽  
Dynamic Resistance ◽  
Interstitial Free ◽  
Resistance Spot ◽  
Dissimilar Weld ◽  
Steel Sheets ◽  
Weld Joints ◽  
Resistance Spot Weld ◽  
Weld Current

In the present study, galvanized High Strength Interstitial Free (HIF) steel sheets, and Dual Phase (DP780) steel sheets were used for the investigations. Resistance spot weld joints were fabricated between dissimilar steel sheets. The variation in dynamic resistance (DR) with the change in welding process parameters such as weld current, weld time and electrode force were used for establishing the range of adequate weld nugget formation parameters. Effect of these parameters over tensile strength, nugget diameter and the observed failure mode was studied using one factor at a time (OFAT) approach. Microstructure and hardness of parent metal, fusion & HAZ region has also been studied.

Sign in / Sign up

Export Citation Format

Share Document