Results are presented from an experimental study conducted to determine the effect of contact geometry, material, surface roughness, and thread compound on the friction coefficient in threaded connections. The friction tests were conducted using the friction and galling tester which was developed at Texas Tech University for use in galling research. This tester employs tubular pin and box specimens machined from oil country tubular goods (OCTG) tubing. A third compound is applied to the specimens which are subsequently loaded under sliding motion thus providing an accurate simulation of field conditions. The contact geometry was varied by providing two different test surface designs for the pin specimen, termed crowned and uncrowned. The crowned design results in a higher stress for a given bearing load. Materials tested were L80 and J55, two popular materials used in the field. Two levels of surface roughness were tested, 0.5 micron and 1.5 micron. Three lubricant conditions were tested, two thread compounds and a light coat of oil.
|Number of pages||6|
|State||Published - 1994|
|Event||Proceedings of the Energy-Sources Technology Conference - New Orleans, LA, USA|
Duration: Jan 23 1994 → Jan 26 1994
|Conference||Proceedings of the Energy-Sources Technology Conference|
|City||New Orleans, LA, USA|
|Period||01/23/94 → 01/26/94|