EP 0234026 A3 19880518 - ARTICLES EMBODYING A WEAR RESISTANT SURFACE LAYER AND A METHOD OF MANUFACTURE THEREOF
Title (en)
ARTICLES EMBODYING A WEAR RESISTANT SURFACE LAYER AND A METHOD OF MANUFACTURE THEREOF
Publication
Application
Priority
US 83194886 A 19860224
Abstract (en)
[origin: EP0234026A2] Articles (18, 38, 44, 46, 48) embodying a wear resistant surface layer (34) which are particularly suited for employ ment in a bowl mill (10) of the type that is operative for purposes of effective the pulverization therewithin of a material such as coal. Among these articles (18, 38, 44, 46, 48) that embody such a wear resistant surface layer (34) are to be found the rolls (18) which provide the grinding force that is employed for purposes of effecting the pulverization within the bowl mill (10) of material such as coal as well as the liners (44, 46, 48) that for wear resistant purposes are employed in selected regions of the interior of the bowl mill (10). As regards the rolls (18), the wear resistant surface layers (34) thereof, as cast, comprise, by weight percentages, 3.2% - 3.4% Carbon, 1.45% - 1.65% Silicon, 0.4% maximum Manganese, 4.5% - 5.0% Nickel, 4.0% - 4.25% Chromium, 0.4% -0.5% Phosphorus, 0.9% - 0.11% Sulfur, 0.4% - 0.6% Molybdenum and no Bismuth. On the other hand, insofar as the liners (44, 46, 48) are concerned, the wear resistant surface layers thereof, as cast, comprise, by weight percentages, 3.5% - 3.7% Carbon, 1.2% - 1.6% Silicon, 0.4% maximum Manganese, 4.3% -5.0% Nickel, 3.7% - 4.4% Chromium, 0.15% - 0.25% Phosphorus, 0.9% - 0.11% Sulfur, 0.4% - 0.6% Molybdenum and 0.015% nominal Bismuth.
IPC 1-7
IPC 8 full level
B02C 15/04 (2006.01); B02C 15/00 (2006.01); C22C 37/08 (2006.01); F16C 13/00 (2006.01)
CPC (source: EP KR)
B02C 15/001 (2013.01 - EP); B02C 15/005 (2013.01 - EP); C22C 37/08 (2013.01 - EP); C22C 38/56 (2013.01 - KR); B02C 15/003 (2013.01 - EP); B02C 2015/002 (2013.01 - EP)
Citation (search report)
- [YD] GB 2072702 A 19811007 - SHEEPBRIDGE EQUIPMENT LTD
- [Y] DE 1507580 A1 19690403 - LOESCHE KG
- [Y] DE 2214146 A1 19730927 - BOEHLER & CO AG GEB
- [AD] US 4389767 A 19830628 - BURBACH HENRY E
- [A] EP 0107044 A2 19840502 - LUMMUS CREST SARL [FR]
- [AD] EP 0111109 A2 19840620 - COMBUSTION ENG [US]
- [AD] EP 0110191 A2 19840613 - LUMMUS CREST SARL [FR]
- [AD] EP 0192972 A1 19860903 - COMBUSTION ENG [US]
- [AD] FR 1543548 A 19681025 - COMBUSTION ENG
- [AD] US 4002299 A 19770111 - SKALKA CLEMENS JOHN
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 9, no. 135 (M-386)[1858], 11th June 1985; & JP-A-60 18 267 (MITSUBISHI JUKOGYO K.K.) 30-01-1985
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0234026 A2 19870902; EP 0234026 A3 19880518; AU 588082 B2 19890907; AU 6916087 A 19870827; CA 1312057 C 19921229; CN 1005537 B 19891025; CN 87100970 A 19870923; IN 166426 B 19900505; JP S62197161 A 19870831; KR 870008049 A 19870923; ZA 871297 B 19870817
DOCDB simple family (application)
EP 86117342 A 19861212; AU 6916087 A 19870223; CA 526697 A 19870105; CN 87100970 A 19870224; IN 803CA1986 A 19861105; JP 2226487 A 19870202; KR 870001547 A 19870224; ZA 871297 A 19870223