Sökning: "Johanna Ejerhed"

Hittade 1 uppsats innehållade orden Johanna Ejerhed.

1. 1. Heat Resistant Steel Alloys : Atlas Copco

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Malin From; Johanna Ejerhed; Artin Fattah; Markus Lindén; Alex Karlstens; [2015]
   Nyckelord :steel alloy heat resistant nitration;

   Sammanfattning : Atlas Copco is interested in investigating the friction in the top-hammer drilling tool threads thatcauses the steel to heat up, leading to a phase transformation and a softer steel in the threads. Theaim of this project is to find a steel alloy or surface finishing that will retain its hardness atelevated temperatures better than the presently used threads material. LÄS MER