position---asme 焊接位置详解（）.ppt

Understanding “Position”in Welding
Walter J. Sperko, P. E.
Sperko Engineering Services, Inc.
4803 Archwood Dr.
Greensboro, NC 27406
rko@
336-674-0600
FAX 336-674-0202
© Sperko Engineering 2005
This presentation is copyrighted by Sperko Engineering
General permission is granted for use of this presentation including printing thereof for educational purposes provided credit is given to Sperko Engineering.
Use of the figures herein in any other publication without specific written permission is prohibited.
© Sperko Engineering 2005
This presentation is copyrighted by Sperko Engineering
The primary purpose of this presentation is twofold:
Make sure that code users understand the difference between testing positions and production welding positions
Help users understand how to read the figures that define production welding positions shown on the next page.
© Sperko Engineering 2005
Production Welding Positions
Groove Welds
Fillet Welds
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Standard Test Positions
Positions 1G, 3G, 6G, 2F, 5F, etc. are specially defined standard positions used for testing. They are properly referred to as Test Positions. Similar positions are found in ISO 6947 identified as PA, PC, PG, etc.
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Standard Testing Positions
Test positions are discreetly defined positions of test coupons that are used when mostly when testing welders. These positions have tolerance of ±15° from the defined horizontal planes and ±5° from a defined vertical or inclined plane. See QW-120
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Testing Position 1G/PA
±15°
Weld Axis Horizontal
Plate Horizontal
±5°
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Test Position 2G/PC
Plates Vertical
Weld Axis Horizontal
±15°
±5°
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Test Position 3F/PF or PG
±5°
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Test Position 6G/HL045 or JL045
45°±5°
© Sperko Engineering 2005