INVESTIGATION OF WEAR BEHAVIOUR OF BORON CONCUSSOR JAWS WELDED BY USING DIFFERENT TYPES OF ELECTRODES

Öz

In this study, Samples of concussor jaws were welded using different types of hard electrodes. These welded parts were subjected to wear test under different loads, and changes in the hardness and microstructures were examined. A pin-on-disc wear test apparatus was used. It is found that wear resistance decreased as the load and the distance were increased. The wear resistance also varied according to hardness.

Anahtar Kelimeler

• Word: Wear,Electrode,Hardness

FARKLI TİP DOLGU ELEKTROTLARI İLE DOLGULARI YAPILAN BOR KIRICI ÇENELERİN AŞINMA DAVRANIŞLARININ İNCELENMESİ

Öz

Bu çalışmada, bor madeninin işlenmesinde kullanılan kırıcı çenelerden alınan numuneler, farklı sert dolgu elektrotları ile dolguları yapılmıştır. Farklı elektrotlarla yapılan dolgu kaynaklarının değişik yükler altındaki aşınma davranışları, sertlik değişimleri ve mikroyapıları incelenmiştir. Aşınma deneylerinde Pin-on-disk aşınma test cihazı kullanılmıştır. Değerlendirmeler sonucunda artan yük ve mesafeye bağlı olarak aşınma miktarının arttığı, aşınma miktarının sertliğe bağlı olarak değiştiği tespit edilmiştir.

Anahtar Kelimeler

• Aşınma,Elektrot,Sertlik

Kaynakça

1. [1] Dogan, H., Findik, F., Morgul, O., “Tribological Properties of Coated ASME 316L SS and Comparison with a Substrate”, Industrial Lubrication and Tribology, V.54 No. 1; 2002, pp. 5-10.
2. [2] Gülenç, B., Kahraman N., 2003, Wear behaviour of buldozer rollers welded using a submarget arc welding process, Materials Design, Vol 24, p 537-542.
3. [3] Tylczak, JH., Oregon, A., 1992, Abrasive wear, ASM Handbook, Vol.18: 184-186.
4. [4] Krause, H., Beutlar, H., 1983, Wear of materials, The International Conference on Wear of Materials, Reston.
5. [5] Hurricks, P. L., 1974, Some metalurgical factor controlling the adhesive and abrasive wear resistance of steels a review, Wear 26.
6. [6] Kahraman, N., Gülenç, B., 2002, Abrasive wear behaviour of powder flame sprayed coatings on steel substrates, Metarials Design, Vol 23, p721-725.
7. [7] Fındık, F., Unal, H. “Development of thermal residual strains in a single sided composite patch”, Composites Part B: Engineering, Volume 32, Issue 4, 200, Pages 379-383.
8. [8] Angus, H.T., 1979, The significance of hardness, Wear 54.

9. [9] Ashby, M., Jones, R.H.D., 1996, Friction and wear engineering materials, Cambridge University, England.
10. [10] Habig, K. H., 1989, Wear behaviour of surface coatings on steels, Tribology International, Vol 22, p 65-73
11. [11] Kim CK., Lee s., Jung Jl., Ahn S., 2003, Effects of complex carbide fraction on high-tempareture wear properties of hardfacing alloys reinforced with complex carbides, Mater Sci Eng A, in pres, Available online.
12. [12] Sulzer Metco Thecnical Bulletin 1997.
13. [13] Kıratlı, N., 2005, Abrasive wear behaviour of concussor jaws welded using a gas metal arc welding process, Industrial Lubrication and tribology, Volume 57, Number 4, pages 150-154.
14. [14] Heintze, G. N., Pherson, R., 1986, Solidification control of submerged arc welds in steels by inoculation with Ti, Welding Journal, p. 140-151, USA.
15. [15] Krishnan, R., Singhraman, R. K., Varatharajan, K., 1994, Microstructure and oxidation resistance of different regions in the welding of mild steel, Journal of Materials Science Letters 13, p. 1618-1621.