David Pacheco

Twin
Rio De Janeiro, Rio de Janeiro, Brazil
Welding, Mechanical Engineering, Research and Development
About
Mechanical and Welding engineer, MSc; Materials and Metallurgical engineer; Failure Analysis Expertise; Heat Treatments; Training; industrial research and development. I perform engineering consultancy works through the internet even in real time (davidjuvenal@gmail.com) or using Whatsapp 55 24 993050689
Talents
Work Experience
Engineering Consulting
Several Companies
Part Time Jan-1982 To present 43 years 3 months
Responsibilities
  • Industrial processes; Welding processes and procedures; Brazing; Heat treating of steel components; Autoclaves and Pressure vessels inspection; Failure analysis (several cases); Metallurgical quality of metals; Training and qualification of welders; Development of welding processes; Mechanical testing of components; Fatigue testing; Heat treatments of cutting tools; Maintenance techniques; Robotic Tig welding (washing-machine); Mig welding (aluminum transformers); Automatic SAW (gas bottles); Automatic Mag (gas bottle); Manual Mag (steel transformers); MMA (diesel tank); Repairing welding (several components); Resistance and seam welding (thin sheets); Brazing training and practices; Metallography; Scanning eletron microscopy; Automotive mechanics; Engines recovery (Diesel and Otto); Maitenance of heavy machines; Private researches
Achievements
  • My Copyrights (Brazil): welding; brazing; heat treating of steels; maintenance techniques; inspection techniques; failure mechanism SS AISI 316; brazing; failure mechanisms (brazing joints); private papers.
Inspection and maintenance of equipments
Petrobras
Full Time Nov-1978 To Dec-1982 4 years 1 month
Responsibilities
  • Maintenance on shore and offshore
Education
Master of Science, Mechanical Engineering
Zakir Husain College Of Engineering And TechnologyAligarh Muslim University
1975-1977 Score60%
Blogs & Portfolio
Restoration of Antique Sewing Machine
Restoration of Antique Sewing Machine
Blog
Restoration of Antique Sewing Machine
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David Pacheco 18 Feb, 2018 14 view 0 Comments
Restoration of old sewing machines requires talents and mechanic skills because several parts need to be reclaimed or manu- factured. This example represents the 12th ...
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Fatigue Tension Test at -196° C - Fatigue Specimen
Fatigue Tension Test at -196° C - Fatigue Specimen
Blog
Fatigue Tension Test at -196° C - Fatigue Specime...
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David Pacheco 26 Sep, 2017 100 view 0 Comments
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 did not occur. In t...
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Mig Aluminum - Welder Qualification Test
Mig Aluminum - Welder Qualification Test
Blog
Mig Aluminum - Welder Qualification Test
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David Pacheco 26 Sep, 2017 103 view 0 Comments
Aluminum alloy. Mig welding parameters and procedures defined before the qualification test. After the test, weld beads without defects. Welder approved and qualified....
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Extra-Curricular Interests

  • Fotography; Sewing; Gardening; Writing; Reading; Backgammon (game); Cinema; Electrician; Hydraulics; Antiquities restoration; Sewing mechanic; Vehicles mechanic; Voluntary teaching

yKnown
Profile Snapshot
David is based out of Rio De Janeiro & has studied ME-Mechanical Engineering, M.Sc-Master of Science from Year 1975-1977 in ZHCET-Zakir Husain College Of Engineering And Technology, Aligarh Muslim University.
David Pacheco is Skilled in Welding, Mechanical Engineering, Research and Development and other talents.