JOINT METHOD OF FERROUS MATERIAL AND POLYAMIDE RESIN, AND CONJUGATE

摘要

PROBLEM TO BE SOLVED: To improve adhesive strength when a PA resin is coated on a ferrous material component (work-piece), and to make a PA resin hardly peel.SOLUTION: Concretely, a method of jointing a ferrous material and a polyamide resin includes: a step in which the ferrous material processed to a desired shape is cleaned; a step in which etching with heated sulphuric acid is performed on the ferrous material; a step in which the heated sulfuric acid etching processes a surface of the ferrous material to a rough surface in which holes of a 200 nm size are formed in a network; and a step in which the polyamide resin is melted to be jointed with the ferrous material.