3 results listed
In this study; the effect of nitration process applied to coldforged 32CrMoV1210 samples with 100-mm, 24, 5 mm in outer
diameter and 7, 5 mm in inner diameter, which is used in
production of the barrel rifle, on the abrasion behaviour is
investigated. For this purpose, hardness measurements,
microstructure investigation and coating thickness determination
of the gas nitrated 32CrMoV1210 steels at 500 °C for a period of
12 hours has been carried out. The original sample and the heattreated sample have been subjected to an over ring pin-type
abrasion test under 80N-120N load. While the 1.2344
(X40CrMoV51) quality tool-steel, which is 56(HRC) in hardness,
is used as a pin, the materials which have been examined with
nitration and without nitration are used as a ring. In comparison
with the severe abrasion resistance of 32CrMoV1210 samples
without nitration; nitrided samples have shown an increase in
abrasion resistance at the rate of %90.
International Iron & Steel Symposium
UDCS
Ali Akkuş
SAİT ÖZÇELİK
Mehmet Ünal
Yusuf Gökalp
Burcu Çetintaş
Furkan Ayhan Tezer
In this study, the effect of gas nitration on the wear
behavior of crankshaft was investigated. For this purpose, gas
nitration was applied to crankshaft for 12 hours at 500 ° C, and
hardness and microstructure images were examined. Nitrided
and unnitrided samples were subjected to abrasive wear test
under 20N, 40N and 60N load. While 100Cr6 balls were used as
abrasive, crankshaft with nitriding and unnitriding was used as
counter-material. Nitrided samples have increased wear
resistance by about 20% compared to the wear resistance of
unnitrided crank shaft samples.
International Iron & Steel Symposium
UDCS
Yusuf Gökalp
Yavuz Sun
Mehmet Ünal
Emre Küçük
SAİT ÖZÇELİK
Ali Akkuş
Burcu Çetintaş
Emre Demirci
In this study; The effect of heat treatment of ER7
quality train wheel samples was investigated under severe
abrasive wear. The train wheel of ER7 quality samples were
heated to 900 oC and brought to austenite phase for 1 hour, then
cooled by water. Cooled samples were tempered at 400oC for 1.5
hours. Severe abrasion test was applied to the samples on
sandpaper containing 210 µm Al2O3 particle under 40N, 80N and
120N loads. Microstructure and hardness measurements of
samples were investigated after quenching and tempering heat
treatment. As a result of these tests, the abrasive wear resistance
of the heat treated sample by containing by a 3-fold increase in
hardness improved by 36%.
International Iron & Steel Symposium
UDCS
Burcu Çetintaş
SAİT ÖZÇELİK
Süleyman Yaşın
Yusuf Gökalp
Ali Akkuş
Emre Demirci