SPRAY FORMING METHOD OF INSERT

摘要

PROBLEM TO BE SOLVED: To provide a technique for producing a high-performance insert which is not only more cost-effective but is unlimited in terms of chemical properties or in terms of a capability to incorporate a ceramic material. SOLUTION: This method forms the sheet insert by thermal spraying of a bulk material. This method has (a) a stage of preparing a mandrel which is a mandrel having the external dimension not larger than the desired internal dimension of the desired insert and has a means for separating the bulk material sprayed from the mandrel, (b) a stage of forming a bulk composite material having a density of at least 99% by thermal spraying one or more kinds of iron or nickel alloy in the presence of a controlled atmosphere and (c) a stage of forming the discrete sheet insert shapes by cooling the bulk material, then removing such material from the mandrel and slicing the material described above for fitting into the final products.