Theoretical and Experimental Research of Strength of Soldered Joints (Metal of Share – Metal Ceramics)
Teorijsko i eksperimentalno istraživanje jačine lemljenih spojeva (metal metal – metal keramika)
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Author
Goncharenko, Vladimir
Keywords
plowshare
metal ceramic plate
hydrogen-oxygen flame
tangential and normal stresses
soldering
hardness
restoration
plužno smicanje
metal-keramička ploča
vodonično-kiseonični plamen
tangencijalna i normalna opterećenja
lemljenje
tvrdoća
obnova
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This article presents theoretical estimate of soldered strain and the obtained equivalent stresses distributions along the share length. It is suggested to estimate the soldered joints strength taking into consideration complicated character of stress condition taking place in the elements under loading. The main factors influencing soldered joints strength are defined in the article. Clearance gap between soldered samples, the overlapping area and groove depth are referred to these factors. The soldered samples tests on force of tear and shear showed that strength σВ of soldered joint for metal of share Л65 and metal ceramic plate of alloy ВК-8, corresponds to В = 119,6…120,6 MPa at clearance gap 0,5...0,75 mm, that is proved with the theory. Ovaj rad predstavlja teorijsku procenu jačine lema i postignutih ekvivalentnih distribucija duž spoja. Predloženo je da se proceni jačina lemljenih spojeva uzimajući u obzir komplikovani karakter uslova kojima su elementi izloženi pod opterećenjem. U radu su definisani osnovni faktori koji utiču na jačinu lemljenih spojeva. Zazor između lemljenih uzoraka, zona preklapanja i dubina su svrstani u ove faktore. Testovi lemljenih spojeva na sile kidanja i smicanja pokazali su da jačina σВ lemljenog spoja metala Л65 i metal-keramičke ploče legure ВК-8, odgovara intervalu В = 119,6…120,6 MPa pri zazoru 0,5...0,75 mm, što je teorijski dokazano.