Öz
Farklı standartlarda polietilen boruların elektrofüzyon kaynaklı birleştirmeleri -5oC ile +30oC sıcaklık aralığında yapılması önermektedir. Ancak iklim şartları düşünüldüğünde özellikle soğuk ülkelerde ve acil durumlarda belirtilenden daha düşük çevre sıcaklığında kaynak gerçekleştirildiğinde birleştirmenin tokluğu üzerinde detaylı bir çalışmaya ihtiyaç vardır. Bu amaçla orta yoğunluklu polietilen (PE80) borular elektrofüzyon kaynak yöntemi ile oda sıcaklığı, 0oC ve -30oC sıcaklıkta temin edildiği şekliyle birleştirilmiştir. Birleştirmelere izod darbe deneyi testi uygulanmış ve kırık yüzey incelemesi gerçekleştirilmiştir. Sonuç olarak birleştirmelerin darbe dayanımını birleştirme çevre sıcaklığından etkilendiği belirlenmiştir.
Anahtar Kelimeler
Orta yoğunluklu polietilen Elektrofüzyon kaynağı Çevre sıcaklığı Tokluk
Kaynakça
- 1. Weissbach, W., 2007. Materials Science and Materials Testing, Verlag, Taschenbuch, Vieweg & Teubner.
- 2. Akkurt, A., 2014. An Analysis Of Electromelting and Hot Element Welding Method’s Safety Used to Join PE Natural Gas Pipes, International Journal of Electronics, Mechanical and Mechatronics Engineering, Vol. 3, No 2, 493-504.
- 3. Akkurt, A., ve Saraç, E., 2012. Farklı Ortam Sıcaklıklarında Elektroergitme Kaynağı ile Birleştirilen PE Doğalgaz Transfer Hatlarının Güvenirliklerinin Araştırılması, Electronic Journal of Machine Technologies, Vol. 9, No 2, 39-52.
- 4. Akkurt, A., ve Ertürk, İ., 2010. Sıcak Elaman Alın Kaynak Yöntemi ile Birleştirilen PE Doğalgaz Borularının Güvenirliklerinin Araştırılması, Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Vol. 16, No 2, 221-233.
- 5. Bowman, J., 1997. A Review of The Electrofusion Joining Process For Polyethylene Pipe Systems, Polymer Engineering and Science, Vol. 37, No 4, 674-691.
- 6. Joy, J.J., 2008. Mechanical and Chemical Properties of High Density Polyethylene: Effects of Microstructure on Creep Characteristics, Doctoral Thesis, University of Waterloo.
- 7. Say, S.S., ve Akgüngör, A.A., 2009. Welding Defects and Their Reasons Observed in Electrofusion Welding of Polyethylene Pipes, 24th World Gas Conference, WGC Argentina.
- 8. Hiroyuki, N., Fumio, I., Akio, N., and Testuo, I., 1994. Design of Electrofusion Joints and Evaluation of Fusion Strength Using Fusion Simulation Technology, Polymer Engineering and Science, Vol. 34, No 20, 1529-1534.
- 9. Stakenborghs, R., ve Rouge, B., 2009. Microwave Based NDE Inspection of HDPE Pipe Welds, The 17th International Conference on Nuclear Engineering, Brussels, Belgium.
- 10. Fujikakef, M., Fukumurat, M., ve Kitao, K., 1997. Analysis of the Electrofusion Joining Process In Polyethylene Gas Piping Systems, Computer and Structures, Vol. 64, No 5/6, 939-948.
- 11. Iranian Gas Standards, IGS-C-DN-001, Code of Practice for Construction and Commissioning of P.E. Gas Networks.
- 12. DVS 2207-1 Standard, Supplement, Welding of Thermoplastics – Heated tool welding of pipes, pipeline components made of PE-HD.
- 13. ASTM-D256-10: 2010. Standard, Test Methods For Determining The Izod Pendulum Impact Resistance of Plastics.
- 14. Boyer, S.A.E., and Haudin, J.-M., 2010. Crystallization of Polymers at Constant and High Cooling Rates: A New Hot-Stage Microscopy Set-UPQ, Polymer Testing, Vol. 29, 445–452.
- 15. Strobl, G., 2006. Crystallization and melting of bulk polymers: New observations, conclusions and a thermodynamic scheme, Progress in Polymer Science. Vol 31, 398–442.
- 16. Wang, L.Y., Lugito, G., Woo, E.M., and Wang, Y.H., 2012. Phase behavior, polymorphism and spherulite morphology in Poly (1,4-butylene adipate) interacting with two structurally similar acrylic polymers, Polymer, Vol. 53, 3815-3826.
- 17. Weissbach, W., 2007. Materials Science and Materials Testing, Verlag, Taschenbuch, Vieweg & Teubner.
Öz
Standards used in electrofusion welding of polyethylene(PE) pipes, recommends to be carried out at the temperature range between -5ºC and +30ºC. However, when climatic conditions considered especially in cold countries and emergency situations when the welding process performed at lower ambient temperatures than specified; we need a detailed study about toughness of the weldments. For this purpose, medium density (PE80) pipes were joined with electrofusion welding method at the various environment temperatures (room temperature, 0ºC and -30ºC) as recieved. The impact resistance of weldments were investigated by Izod impact test and fracture surface inspection was carried out. As a result, the weldments impact resistance was determined to be affected by the ambient temperature.
Anahtar Kelimeler
Medium density polyethylene Electrofusion welding Ambient temperatures Toughness
Kaynakça
- 1. Weissbach, W., 2007. Materials Science and Materials Testing, Verlag, Taschenbuch, Vieweg & Teubner.
- 2. Akkurt, A., 2014. An Analysis Of Electromelting and Hot Element Welding Method’s Safety Used to Join PE Natural Gas Pipes, International Journal of Electronics, Mechanical and Mechatronics Engineering, Vol. 3, No 2, 493-504.
- 3. Akkurt, A., ve Saraç, E., 2012. Farklı Ortam Sıcaklıklarında Elektroergitme Kaynağı ile Birleştirilen PE Doğalgaz Transfer Hatlarının Güvenirliklerinin Araştırılması, Electronic Journal of Machine Technologies, Vol. 9, No 2, 39-52.
- 4. Akkurt, A., ve Ertürk, İ., 2010. Sıcak Elaman Alın Kaynak Yöntemi ile Birleştirilen PE Doğalgaz Borularının Güvenirliklerinin Araştırılması, Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Vol. 16, No 2, 221-233.
- 5. Bowman, J., 1997. A Review of The Electrofusion Joining Process For Polyethylene Pipe Systems, Polymer Engineering and Science, Vol. 37, No 4, 674-691.
- 6. Joy, J.J., 2008. Mechanical and Chemical Properties of High Density Polyethylene: Effects of Microstructure on Creep Characteristics, Doctoral Thesis, University of Waterloo.
- 7. Say, S.S., ve Akgüngör, A.A., 2009. Welding Defects and Their Reasons Observed in Electrofusion Welding of Polyethylene Pipes, 24th World Gas Conference, WGC Argentina.
- 8. Hiroyuki, N., Fumio, I., Akio, N., and Testuo, I., 1994. Design of Electrofusion Joints and Evaluation of Fusion Strength Using Fusion Simulation Technology, Polymer Engineering and Science, Vol. 34, No 20, 1529-1534.
- 9. Stakenborghs, R., ve Rouge, B., 2009. Microwave Based NDE Inspection of HDPE Pipe Welds, The 17th International Conference on Nuclear Engineering, Brussels, Belgium.
- 10. Fujikakef, M., Fukumurat, M., ve Kitao, K., 1997. Analysis of the Electrofusion Joining Process In Polyethylene Gas Piping Systems, Computer and Structures, Vol. 64, No 5/6, 939-948.
- 11. Iranian Gas Standards, IGS-C-DN-001, Code of Practice for Construction and Commissioning of P.E. Gas Networks.
- 12. DVS 2207-1 Standard, Supplement, Welding of Thermoplastics – Heated tool welding of pipes, pipeline components made of PE-HD.
- 13. ASTM-D256-10: 2010. Standard, Test Methods For Determining The Izod Pendulum Impact Resistance of Plastics.
- 14. Boyer, S.A.E., and Haudin, J.-M., 2010. Crystallization of Polymers at Constant and High Cooling Rates: A New Hot-Stage Microscopy Set-UPQ, Polymer Testing, Vol. 29, 445–452.
- 15. Strobl, G., 2006. Crystallization and melting of bulk polymers: New observations, conclusions and a thermodynamic scheme, Progress in Polymer Science. Vol 31, 398–442.
- 16. Wang, L.Y., Lugito, G., Woo, E.M., and Wang, Y.H., 2012. Phase behavior, polymorphism and spherulite morphology in Poly (1,4-butylene adipate) interacting with two structurally similar acrylic polymers, Polymer, Vol. 53, 3815-3826.
- 17. Weissbach, W., 2007. Materials Science and Materials Testing, Verlag, Taschenbuch, Vieweg & Teubner.
Ayrıntılar
| Bölüm | Makaleler |
|---|---|
| Yazarlar | |
| Yayımlanma Tarihi | 15 Ağustos 2016 |
| Yayımlandığı Sayı | Yıl 2016 Cilt: 31 Sayı: ÖS1 |