An improved collimator for a plasma arc torch consists of an annular holder member and an insert member. The insert member includes a tubular stem portion ending in an integrally formed, radially extending face plate. When the stem portion is fitted into the central bore of the holder member with a predetermined clearance fit therebetween, a cooling water passage is created. The improved collimator is characterized by the absence of any welds between the holder member and the insert member that would be exposed to conductive gases given off during use of the plasma arc torch and a lesser resistance to cooling water flow than prior art collimator designs.
申请公布号
WO2006041980(A2)
申请公布日期
2006.04.20
申请号
WO2005US35927
申请日期
2005.10.06
申请人
PHOENIX SOLUTIONS CO.;HANUS, GARY, J.;BERGSRUD, DAVID, P.;HICKEL, STEVEN, D.
发明人
HANUS, GARY, J.;BERGSRUD, DAVID, P.;HICKEL, STEVEN, D.