HFMI the advantages of PIT

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HFMI the advantages of PIT the currently leading HFMI method very low hand-arm vibrations of just ~5m/s 2 robust design for industrial application most versatile application sustainable quality

1 HFMI the advantages of PIT the currently leading HFMI method very low hand-arm vibrations of just ~5m/s 2 robust design for industrial application most versatile application sustainable quality concept lighter & cheaper than ultrasonicsystems but with an absolutely similar effect HFMI is more effective than other methods widest range of accessories full power at only 250 l/min at 6 bar speeds of 20 cm/min or 10 cm 2 /min probably the most experienced HFMI team

2 the PITEC portfolio PIT application consulting PIT system sales PIT operator training PIT services PIT quality monitoring PIT rental equipment

3 most versatile application the treatment of the weld toe fatigue prevention the treatment of edges fatigue prevention by hand till now only with PIT by robot the flat treatment prevention of fatigue or stress corrosion cracking intermediate layer peening to avoid shrinkage stress or distortion under water not possible with every HFMI systems

sustainable quality concept The necessary reproducibility of the desired results can only be

will decouple the hammering energy from the housing and thereby from the operator: this will

fatigue and the effect of HFMI before he may be expected to apply effective HFMI treatment in

He will need to understand the importance of an application before he may be expected to report

4 sustainable quality concept The necessary reproducibility of the desired results can only be guaranteed through a sustainable quality concept: A special spring mechanism inside the apparatus will decouple the hammering energy from the housing and thereby from the operator: this will ensure constancy of the impact effect on the object and thus smooth out internal compression stresses. it allows the intensity setting of the apparatus to be checked at any time, using a simple PIT Almen intensity test. this allows simple planar applications, as often necessary for lasting treatment of flat or planar areas near seams. One-day training/sensitisation of operators: An operator will need to be aware of the causes of fatigue and the effect of HFMI before he may be expected to apply effective HFMI treatment in each case. He will need to understand the importance of an application before he may be expected to report back if circumstances should prevent him from applying the correct treatment. Visual inspection of the application: Regions with different hardness, raised weld reinforcement and small undercuts will be unavoidable in practice. Therefore the depth of the trace is not a very suitable QM instrument. Much more important is it to reach the root of the notch and to remove the rest notch completely. PITEC offer a LED Loupe and/or a LED camera.

FAT classes "as welded" details yield strength fy Grinding TIG Dressing Hammer-/Needle Peening PIT factors FAT-classes factors FAT-classes factors FAT-classes

FAT 100 1,97 FAT 140 > 750 fy 950 2,25 FAT 160 Quersteife FAT 80 235 fy 355 1,30 FAT 100 1,56 FAT 125 > 355 fy 550 1,75 FAT 140 1,30 FAT 100 1,30 FAT 100 > 550

FAT 112 > 550 fy 750 1,50 FAT 125 2,00 FAT 180 > 750 fy 950 2,00 FAT 180 > high potential for bad treatment > only in horizontal level > low reproducible >

time-consuming > ~ 20 cm/min. Referenzen: > Hobbacher A.

5 PIT vs. other methods The comparison with other methods shows the high technical and economical potential of Pneumatic Impact Treatment (PIT) in an impressive way. FAT classes "as welded" details yield strength fy Grinding TIG Dressing Hammer-/Needle Peening PIT factors FAT-classes factors FAT-classes factors FAT-classes factors FAT classes m=3 m=3 m=3 m=5 Längssteife FAT fy 355 1,30 FAT 90 1,57 FAT 112 > 355 fy 550 1,76 FAT 125 1,30 FAT 90 1,30 FAT 90 > 550 fy 750 1,50 FAT 100 1,97 FAT 140 > 750 fy 950 2,25 FAT 160 Quersteife FAT fy 355 1,30 FAT 100 1,56 FAT 125 > 355 fy 550 1,75 FAT 140 1,30 FAT 100 1,30 FAT 100 > 550 fy 750 1,50 FAT 112 2,00 FAT 160 > 750 fy 950 2,25 FAT 180 Stumpfstoß FAT fy 355 1,30 FAT 112 1,55 FAT 140 > 355 fy 550 1,77 FAT 160 1,30 FAT 112 1,30 FAT 112 > 550 fy 750 1,50 FAT 125 2,00 FAT 180 > 750 fy 950 2,00 FAT 180 > high potential for bad treatment > only in horizontal level > low reproducible > highest improvement - cross section reduction > high hand-arm-vibration level > high reproducibility - additional notches > sustainable quality-assurance > time-consuming > ~ 20 cm/min. Referenzen: > Hobbacher A., IIW recommendations for fatigue design of welded joints and components, WRC bulletin 520, New York: The Welding Research Council, 2009 > Marquis et al., Fatigue strength improvement of steel structures by high-frequency mechanical impact: proposed fatigue assessment guidelines, Weld World 57, pp , 2013 > IIW Recommendations on High Frequency Mechanical Impact (HFMI) Treatment for Improving the Fatigue Strength of Welded Joints

absolutely comparable with the clearly heavier and more expensive

6 PIT vs. Ultrasonic-Systemes Because of a very innovative development, PIT is absolutely comparable with the clearly heavier and more expensive ultrasonic systems regarding the effect of compressive stresses and Fatigueimprovement. Hence, PIT is also led with the IIW as an absolutely equivalent HFMI system. Furthermore PIT has a very high safety level because of less voltage from only 24 V in the Hand-tool and a hand-arm-vibration level of only 5m/sec².

7 most extensive range of accessories for applications for quality assurance various radii of pins, depending on objective various lengths of pins, depending on accessibility concave pins for treating edges hose package extensions different controls aids for better guidance LED loupe for visual control LED camera for visual control and documentation PIT Almen test to test the intensity of the System

$Because, after more than 2 years, we have not had any new fractures, we will in future rely on PIT for our customers. Vito Pirone, Salzbergen 04.$ 04.2013, Beckmann und Volmer Service GmbH DCC tested PIT technology on test structures and found their expected results confirmed.

04.2013, Beckmann und Volmer Service GmbH DCC tested PIT technology on test structures and found their expected results confirmed.

8 Quoting our customers A rate of damage instances of just 6 months motivated us at the end of 2010 to go for PIT technology. Because, after more than 2 years, we have not had any new fractures, we will in future rely on PIT for our customers. Vito Pirone, Salzbergen , Beckmann und Volmer Service GmbH DCC tested PIT technology on test structures and found their expected results confirmed. We are successfully applying the PITEC system to improve the service life of our rails. Thomas Krimmer, Head of Procurement, Doppelmayr Cable Car GmbH & Co KG In addition to our repair services we are also offering our customers a PIT treatment option on request, based on the increased resistance to vibrations. Due to excellent cooperation with PITEC, our repair times have remained virtually unchanged. Dipl. Ing. Mario Krech, Sales/Welding repairs center, Schüler Pressen GmbH

9 let us also convince you too Maschinenbau Reparatur & Instandhaltung Stahl- & Anlagenbau Schienenfahrzeuge Behälterbau

10 international success The experience of the PIT team and the effectiveness of our PIT systems are the reason why we are the globally leading HFMI provider!

please contact us here: Wolfgrubenstrasse 7 D-88525 Heudorf Sales: Frank Schäfers Sales Manager & Technical Consultant Tel: +49 (0)2275 937766 Mobile: +49 (0)173 2085569 f.schaefers@pitec-gmbh.

11 please contact us here: Wolfgrubenstrasse 7 D Heudorf Sales: Frank Schäfers Sales Manager & Technical Consultant Tel: +49 (0) Mobile: +49 (0) f.schaefers@pitec-gmbh.com Consultancy: Peter Gerster Senior Consultant Tel: +49 (0) Mobile: +49 (0) p.gerster@pitec-gmbh.com Managing Director: Volker Brobeil General Manager Tel: +49 (0) info@pitec-gmbh.com Compiled by Frank Schäfers 12 th January 2016

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