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Author: Ivan Perfilyev

To become an Inspection Engineer

Tensile tests (PART 6).

Posted on January 16, 2017 by Ivan Perfilyev / 0 Comment

When conducting tensile tests the beginning of yield point is marked with decreasing of apparatus values or recording device. Yield point can be determined by o...

To become an Inspection Engineer

Methods for materials properties evaluation at the stage of cracks origination and development.

Posted on January 11, 2017 by Ivan Perfilyev / 0 Comment

Earlier it was considered, that both in basic material and in welded joint cracks existence is not acceptable, and their origination during product service sign...

Inspection of Welded Seams

Methods of evaluation welded seams durability for cold cracks formation (Part 2).

Posted on January 9, 2017 by Ivan Perfilyev / 0 Comment

Metallurgical processes, occurred during point fusing, in spite of short-term of their behavior, are reproduced, apparently, with the same completeness level, a...

Metallography and Heat Treatment of Metal

Origination of crystals in liquids (Part 3).

Posted on January 6, 2017 by Ivan Perfilyev / 0 Comment

Surface tension (γ) on the surface of crystal and liquid influence on the critical size of the nucleus. The bigger is energy of interphase boundary, the more en...

To become an Inspection Engineer

Attestation of welding technology (Part 6).

Posted on January 4, 2017 by Ivan Perfilyev / 0 Comment

General program of enterprise about technology attestation by tests conducting is: –       Welding parameters determination; –       Examination of ...

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