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David Pacheco
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David Pacheco
Twin
Rio De Janeiro
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Brazil
Welding, Mechanical Engineering, Creative Development
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Twin
Rio De Janeiro
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Welding, Mechanical Engineering, Creative Development
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Quality Control - Metallurgical Analysis - Gray Cast Iron
Quality Control - Metallurgical Analysis - Gray Cast Iron
David Pacheco
11 Mar 16
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Irregular microstructure: pearlite (dark), ferrite (white), flakes graphite type C and eutectic.
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David Pacheco
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David-Pacheco's Blogs/Portfolios
Mig Welder
I trained and qualified 65 Mig / Mag welders. In the photo a Mig welder performs a weld bead in the vertical down position. Non-qualified welders do n...
Fatigue Tension Test at -196° C - ...
Austenitic Stainless steel AISI 316; Frequency of 120 Hz; 30 million cycles; Stages I and II of brittle fracture; Stage III of the ductile fracture di...