A pin-on-disc study on the tribology of cast iron, sinter and composite railway brake blocks at low temperatures

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Fältnamn	Indikatorer	Metadata
000		02967naa a2200397 4500
001		oai:DiVA.org:kth-246451
003		SwePub
008		190320s2019 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2464512 URI
024	7	a https://doi.org/10.1016/j.wear.2019.01.1102 DOI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Lyu, Yezhe,d 1987-u KTH,Maskinkonstruktion (Inst.)4 aut0 (Swepub:kth)u136e6l9
245	1 0	a A pin-on-disc study on the tribology of cast iron, sinter and composite railway brake blocks at low temperatures
264	1	b Elsevier,c 2019
338		a print2 rdacarrier
500		a QC 20190320
520		a Most freight wagons in the EU use cast iron brake blocks. Cast iron brake blocks have a stable braking capability in different environmental conditions, but wear down the wheel tread quickly. Therefore, there is a need to understand the tribology of other brake block materials. A pin-on-disc tribometer placed in a temperature-controlled chamber is used to investigate the tribology of cast iron, sinter and composite railway brake blocks at low ambient temperatures. Pins made from different brake blocks are tested with discs made from steel wheels. Both friction coefficient and wear are evaluated at five different temperatures from + 10 to − 30 °C. The cast iron block demonstrated the greatest wear at − 10 and − 20 °C, due to the ductile-to-brittle transition at low temperatures. The worn graphite from cast iron is likely to become a solid lubricant, reducing the friction at − 10 and − 20 °C. For the composite brake block, a gradual decrease in friction with decreasing temperature was found. The sinter brake block was not sensitive to changes in ambient temperature. The sliding speed in the current study is relatively low and further study at higher speed is suggested in order to evaluate the tribological performance of different brake blocks.
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Tribologi0 (SwePub)203082 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Tribology0 (SwePub)203082 hsv//eng
653		a Brake blocks
653		a Composite
653		a Pin-on-disc
653		a Railway
653		a Temperature
653		a Tribology
700	1	a Bergseth, Ellen,d 1979-u KTH,Maskinkonstruktion (Inst.)4 aut0 (Swepub:kth)u1qevz2q
700	1	a Wahlström, Jens,c PhD/Docent,d 1979-u KTH,Maskinkonstruktion (Inst.)4 aut0 (Swepub:kth)u1yf14yg
700	1	a Olofsson, Ulf,d 1962-u KTH,Maskinkonstruktion (Inst.)4 aut0 (Swepub:kth)u10qpddv
710	2	a KTHb Maskinkonstruktion (Inst.)4 org
773	0	t Weard : Elsevierg , s. 48-52q <48-52x 0043-1648x 1873-2577
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246451
856	4 8	u https://doi.org/10.1016/j.wear.2019.01.110

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Av författaren/redakt...: Lyu, Yezhe, 1987 ...; Bergseth, Ellen, ...; Wahlström, Jens, ...; Olofsson, Ulf, 1 ...

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Tribologi

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Av lärosätet: Kungliga Tekniska Högskolan

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