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Then, in very short time, permit to give definitions and corrective action to operation line.

Virtual ERW – it’s a simple, practical and powerfull tool to computer graphical evaluation of heat affect zone to electric resistance welding steel tubes and pipes.

calvin-holcomb
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Then, in very short time, permit to give definitions and corrective action to operation line.

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  1. Virtual ERW– it’s a simple, practical and powerfull tool to computer graphical evaluation of heat affect zone to electric resistance welding steel tubes and pipes. This software use only a digital macro photography from sample of weld, changing traditional subjective evaluation from ERW weld to complete objective and quantitative evaluation. Do, automatically, one report with 10 basic points, to check the mains requirements to ajust weld box to good weld. Then, in very short time, permit to give definitions and corrective action to operation line. VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  2. 1° STEP: • Take a digital picture from weld zone of the tube attached Nital 3% • Type only outside diameter and wall thickness in the excel sheet to obtain the standard graphical of weld zone (from data bank prepared before). This step provide ideal coordinates for each point required, then will be very easy to ajust real points. • The software draw a transparent graphical (ideal weld zone) over real digital picture. • Move and ajust, size and position, from real digital picture under the ideal graphical. VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  3. D E • 2° STEP: • ajust (type) coordenates from each contornous points (red points) and for each quadrant (A,B,C, D e E) C B A F G b) ajust (type) coordenates from center (blue points) for each isothermic lines (F,G) c) Ajust (type) coordenates from each contornous points (yellow points) to cap (H,I e J) H J I VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  4. I2 I1 J1 J2 D2 D1 E1 E2 H2 H1 C2 C1 A e B – define external and internal radius (left and rigth) B1 B2 A1 A2 C e F – define UPSET and ISOTHERMIC 1 D e G – define UPSET and ISOTHERMIC 2 E – define UPSET, ISOTHERMIC 3 and DEVIATION BOND LINE F4 F1 G4 G1 G2 G3 F3 F2 B4 B3 A4 A3 C4 H4 H3 C3 E4 E3 D4 D3 H,I e J – define CAP I3 I4 J4 J3 VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  5. Wait ... Please, see, step by step, the execution of graphical solution. By calculations: radius, wall thickness, edge off-set (yellow lines), bond line deviation (interrupted yellow lines), and hourglass shaped and relations (blue lines) are determined. Check the flow lines drawn (red lines). By integrations, individual areas, by quadrants, are calculated (heat affected zones , upsets and caps). By derivation, flowline angles (green lines) are determinated. END VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  6. REPORTS: a) by asymmetries => comparative evaluations from vertical and horizontal planes (by quadrants) in real picture b) by references standards => comparative evaluations checked against references standards (differences between real and ideal weld zones) VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  7. VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  8. VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

  9. If you need a true report, ask by e-mail. We are development Virtual SAW too. END VIRTUAL TUBES & PIPES - Flávio Braga – 55-12-81210788 - flavio-liga@uol.com.br

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