EP 3325769 A1 20180530 - CABLE BOLTS
Title (en)
CABLE BOLTS
Title (de)
KABELVERANKERUNGEN
Title (fr)
BOULONS DE CÂBLE
Publication
Application
Priority
- EP 15177973 A 20150723
- EP 2016066817 W 20160714
Abstract (en)
[origin: EP3121369A1] A cable bolt for providing support and balance to a rock mass, comprising: a multi-strand cable having a plurality of steel wires being twisted together, said multi-strand cable having a first end portion for anchoring in a borehole of rock mass and a second end portion for being positioned adjacent to the opening of the borehole, a fixture secured to the second end portion of said multi-strand cable, wherein at least one of the plurality of steel wires is made from steel having as steel composition: a carbon content ranging from 0.20 weight percent to 0.95 weight percent, a silicon content ranging from 0.5 weight percent to 2.0 weight percent, a manganese content ranging from 0.40 weight percent to 1.0 weight percent, a chromium content ranging from 0.0 weight per cent to 1.0 weight percent, a sulphur and phosphor content being limited to 0.025 weight percent, the remainder being iron, and said steel has as metallurgical structure: a volume percentage of retained austenite ranging from 4 percent to 25 percent, the remainder being tempered primary martensite and untempered secondary martensite.
IPC 8 full level
E21D 21/00 (2006.01); C21D 1/18 (2006.01); C21D 1/19 (2006.01); C21D 1/25 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01)
CPC (source: EP US)
C21D 1/18 (2013.01 - EP US); C21D 1/22 (2013.01 - EP US); C21D 8/065 (2013.01 - EP US); C21D 9/525 (2013.01 - EP US); E21D 21/0006 (2013.01 - EP US); E21D 21/0026 (2013.01 - EP US); E21D 21/0046 (2013.01 - US); E21D 21/006 (2016.01 - EP US); C21D 1/19 (2013.01 - EP US); C21D 1/25 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Citation (search report)
See references of WO 2017012994A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3121369 A1 20170125; AU 2016294836 A1 20171221; CA 2989263 A1 20170126; CL 2017003380 A1 20180511; CN 107849918 A 20180327; EP 3325769 A1 20180530; PE 20180638 A1 20180416; US 2018245468 A1 20180830; WO 2017012994 A1 20170126
DOCDB simple family (application)
EP 15177973 A 20150723; AU 2016294836 A 20160714; CA 2989263 A 20160714; CL 2017003380 A 20171226; CN 201680041823 A 20160714; EP 16739129 A 20160714; EP 2016066817 W 20160714; PE 2017002726 A 20160714; US 201615744392 A 20160714