| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for producing a new heat resistant member which can be applied for an exhaust guide assembly of a VGS type turbocharger used at a high temperature exhaust gas atmosphere of about 950 deg.C for a long time. SOLUTION: The constitutional member applied to an exhaust guide assembly A of a variable blade 1, a turbine frame 2, a variable mechanism 3 or the like is produced by subjecting a stock selected from high alloy austenitic heat resistant stainless steel, a iron-based superalloy and a nickel-based superalloy to ionization carburizing, and thereafter performing salt bath treatment thereto.</p> |
