Inclusions in the weld seams (Part 2).

The slag density is significantly less than the metal density, in the radiographic picture slag inclusions look like relatively dark irregular-shaped sections. However, several coated welding electrodes form slags approximately of the same density as the metal density. Expectedly, in case of slag inclusions which are formed as a result of use of such electrodes it is highly difficult to detect them by means of Continue reading →

Methods of technological strength evaluation.

One of the basic trial tasks, conducted during technological weldability of materials determination, is evaluation of its technological strength under conditions of any welding method, as with strength increasing the possibility of high-quality welded connection realization increases. Term “technological strength” was introduced by Prochorov N.N. in 1950. This term underlines, that we are speaking about the Continue reading →

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