Journals / Çelik Araştırma ve Geliştirme Dergisi / 2026 / Cilt: 5 Sayı: 1

Investigation of the Effect of Heat Treatment Applied at the Same Temperature and Reduction Process Applied at Different Rates on the Mechanical Properties of Brake Pipes

Aynı Sıcaklıkta Uygulanan Isıl İşlem ve Farklı Oranda Uygulanan Redüksiyon İşleminin Fren Borularına Mekanik Özelliklerine Etkisinin Araştırılması

Ozan Koyuncu(Bant Boru San. ve Tic. A.Ş.)0000-0002-5529-5059
Burak Çelik(Bant Boru San. ve Tic. A.Ş.)0000-0002-4013-5837
Yasin Akgül(KARABÜK ÜNİVERSİTESİ)0000-0001-5643-5968
Alper İncesu(KARABÜK ÜNİVERSİTESİ)0000-0003-4404-4331
Pages
1–8
Publication Date
2024-07-01
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, brake pipes with 3.40 mm and 4.75 mm outer diameters were reduced to 3.20 mm and 4.65 mm outer diameters.
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Key Findings & Data:Then, the brake pipes were subjected to a temperature of 450 °C and 30 minutes.
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Conclusion & Impact:From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Fren borusu · redüksiyon · tavlama

Abstract

In this study, brake pipes with 3.40 mm and 4.75 mm outer diameters were reduced to 3.20 mm and 4.65 mm outer diameters. Then, the brake pipes were subjected to a temperature of 450 °C and 30 minutes. Annealing heat treatment was applied for a period of time and the samples were allowed to cool at room temperature. Samples with eight different parameters obtained in this way were comparatively examined in terms of mechanical properties and microstructure. With the reduction process applied, increases in yield strength, tensile strength and Vickers hardness values were observed in the decrease from 3.40 mm outer diameter pipe to 3.20 mm outer diameter and from 4.75 mm outer diameter pipe to 4.65 mm outer diameter. There were decreases in elongation at break values inversely proportional to the strength values. It is understood from the changes in mechanical properties that the applied annealing heat treatment parameters are sufficient in terms of temperature and time. From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.

Özet

Bu çalışmada, 3,40 mm ve 4,75 mm dış çapa sahip fren borularına 3,20 mm ve 4,65 mm dış çapa sahip olacak şekilde redüksiyon işlemi uygulanmıştır. Ardından fren borularına 450 °C sıcaklık ve 30 dk. süre ile tavlama ısıl işlem uygulanmış ve numuneler oda sıcaklığında soğumaya bırakılmıştır. Bu şekilde elde edilen sekiz farklı parametredeki numuneler karşılaştırmalı olarak mekanik özellikler ve mikroyapı bakımından incelenmiştir. Uygulanan redüksiyon işlemi ile birlikte 3,40 mm dış çap borudan 3,20 mm dış çapa düşüşte hem de 4,75 mm dış çap borudan 4,65 mm dış çapa düşüşte akma mukavemeti ve çekme mukavemeti ve Vickers sertlik değerlerinde artışlar gözlemlenmiştir. Kopma uzaması değerlerinde ise mukavemet değerleri ile ters orantılı şekilde azalmalar meydana gelmiştir. Uygulanan tavlama ısıl işlem parametrelerinin sıcaklık ve süre olarak yeterli olduğu mekanik özelliklerdeki değişimlerden anlaşılmaktadır. Eğme deneyi sonucunda elde edilen verilerden 4,75 mm dış çap borudan 4,65 mm dış çapa düşüşte diğer mekanik özellikler ile paralel bir davranış sergilediği ancak 3,65mm dış çap borudan 3,40 mm dış çapa düşüşte bunun tam tersi bir davranış sergilediği gözlemlenmiştir.

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Cite This Article

Koyuncu, O., Çelik, B., Akgül, Y., İncesu, A. (2024). Investigation of the Effect of Heat Treatment Applied at the Same Temperature and Reduction Process Applied at Different Rates on the Mechanical Properties of Brake Pipes. Çelik Araştırma ve Geliştirme Dergisi, Cilt: 5 Sayı: 1, 1–8. https://ajindex.com/articles/1611421

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