Comprehensive tests of sintered carbides in the aspect of conical picks operational life

• Autorzy: Grzegorzek Wojciech , Jaszczuk Marek

Identyfikatory

DOI

10.37190/msc202709

• Języki publikacji: EN

Abstrakty

EN

The results of tests on the brittle fracture and abrasive wear of conical picks sintered carbides taking into account the size of tungsten carbide grains and the content of cobalt are presented. The tests were carried out on the innovative laboratory stand for tribological tests using the method for determination of resistance to edge fracture and abrasive wear. Test results have shown that an increase in the size of tungsten carbide grains, and thus an increase in the cobalt content, reduces the wear resistance and increases the resistance to brittle fracture. The results of the tests of sintered carbides inserts in the aspect of their durability are presented.

Słowa kluczowe

EN

conical picks; sintered carbide; fracture resistance; abrasion resistance

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2020
• Tom: Vol. 27
• Strony: 119--131
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Grzegorzek Wojciech

• Silesian University of Technology, Faculty of Mining, Safety Engineering and Industrial Automation, Akademicka 2, 44-100 Gliwice, Poland

autor

Jaszczuk Marek

• Silesian University of Technology, Faculty of Mining, Safety Engineering and Industrial Automation, Akademicka 2, 44-100 Gliwice, Poland

Bibliografia

• ASTM Designation G65-04, 2010, Standard test method for measuring abrasion using the dry sand/rubber wheel apparatus.
• Baildonit, 2004, Sintered carbide inserts for mining tools – selected properties, Katowice, Węgliki Spiekane BAILDONIT.
• ISO 4499-2:2008 (E), Hardmetals – Metallographic determination of microstructure. Part 2: Measurement of WC grain size.
• MANN R., 2014, The effect of geometrical characteristics of conical picks on energy consumption of cutting with roadheaders, Publishing House of Silesian University of Technology, Gliwice.
• ORTNER H.M., ETTMAYER P., KOLASKA H., 2014, The history of the technological progress of hardmetals, Int. J. Refract. Met. Hard Mater., 44, 148–159.
• ŚCIESZKA S.F., GRZEGORZEK W., ŻOŁNIERZ M., 2013, Tribotesting system for hardmetals mechanical characterization, Int. J. Refract. Met. Hard. Mater., 41, 470–482.
• ŚCIESZKA S.F., GRZEGORZEK W., ŻOŁNIERZ M., WULCZYŃSKI J., 2015, Method and device for testing the fracture toughness and abrasive wear of advanced construction and tool materials, Institute for Sustainable Technologies, Radom, 163–179.