公开(公告)号：US06669441B2

公开(公告)日：2003-12-30

申请号：US09878027

申请日：2001-06-08

申请人： Karl-Heinz Bertnik ,  Volker Döring ,  Hans-Dieter Hensel ,  Peter Schick

发明人： Karl-Heinz Bertnik ,  Volker Döring ,  Hans-Dieter Hensel ,  Peter Schick

IPC分类号： F01D1716

CPC分类号： F02B37/025 ,  F01D5/28 ,  F01D17/141 ,  F02B37/22 ,  F02B39/00 ,  F05D2250/15 ,  F05D2250/25 ,  Y02T10/144

摘要： An exhaust-gas turbine for a turbocharger includes a rotor mounted rotatably in a turbine casing having a spiral inlet duct which is followed by an annular space surrounding the rotor. A guide-blade cascade is capable of being pushed axially into the annular space near the outer circumference of the rotor. The guide-blade cascade includes guide blades, is guided in an annular gap between an inner part and the turbine casing and is axially displaceable via an axial slide by a sliding sleeve. The guide-blade cascade with the axial slide, the inner part and/or the sliding sleeve are produced from an austenitic cast steel material having the following components: C≦0.2%; Si 1.5-2.5%; Mn≦2.00%; P≦0.045%; S≦0.03%; Cr 24.0-26.0%; Ni 19-22%; and W≦5%.

摘要翻译： 用于涡轮增压器的废气涡轮机包括可旋转地安装在具有螺旋入口管道的涡轮机壳体中的转子，其后面是围绕转子的环形空间。 引导叶片级联能够被轴向推入靠近转子外圆周的环形空间。 引导叶片级联包括导向叶片，在内部部分和涡轮机壳体之间的环形间隙中被引导，并且通过滑动套筒通过轴向滑动件可轴向移动。 具有轴向滑块，内部部件和/或滑动套筒的导向叶片级联由具有以下组分的奥氏体铸钢材料制成：C <= 0.2％; Si 1.5-2.5％; Mn <= 2.00％; P <= 0.045％; S <= 0.03％; Cr 24.0-26.0％; Ni 19-22％; 而W <= 5％。