Types of Surface Impurities versus the Quality of Brazed Joints
Journal Title: Biuletyn Instytutu Spawalnictwa - Year 2018, Vol 62, Issue 4
Abstract
Brazing is one of the primary joining processes increasingly often applied in industry. Because of their mechanical properties, overlap joints are particularly popular when making brazed structures. The use of brazed joints in structures of critical importance requires that particular attention be paid to joint quality, e.g. by the appropriate cleaning of surfaces to be joined. The article presents results of non-destructive tests of brazed joints made in steel S235JRG2. Surfaces used in the tests were deliberately contaminated to simulate the presence of welding imperfections. Afterwards, the test specimens were subjected to non-destructive (visual and radiographic) tests aimed to determine the effect of surface impurities on the quality of brazed joints.
Authors and Affiliations
Jacek Tomków
Dye Penetrant Tests of Welded Joints Made in Structural Steel
The article presents imperfections tested using penetrant methods. The research described in the article was concerned with imperfections regarded as the most hazardous, i.e. cracks. The tests involved the formation of...
Effect of Modifying and Alloying Elements on the Structure and Properties of Surfaced Layers Made of High-Tin Bronze
The article discusses the effect of some modifying and alloying elements on the structural, mechanical and operational properties of high-tin bronze used for the submerged arc surfacing of steels. The research-related te...
Nd-YAG Laser Beam-Induced Liquation Cracking in Selected Nickel-Based Superalloys
MAR-M247 and Rene 77 belong to intermetallic phase Ni₃(Al, Ti) precipitation hardened nickel alloys widely used in the aerospace and power engineering industries. Because of their susceptibility to cracking, the above-na...
Multiple MAG Repair Welding of Steel S1100QL with the Removal of Defective Fragments of Welds Using Mechanical Treatment
The research discussed in the article involved the performance of tests assessing the effect of a one-time and four-time repair welding thermal cycle on mechanical properties of 18 mm thick butt joints made of toughened...
Advanced Applications of Microplasma Welding
The article discusses microplasma arc applications in welding, surfacing and remelting processes, describes the effect of microplasma arc and its burning conditions as well as presents the properties and the application...