Patent ID: 11965475
Assignee: HYUNDAI KEFICO CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC F  C | IPC C  F

Claim 9:
10. A coating method of an assembly for a fuel injector that stacks a coating material having a multilayer structure on a surface of a base material of an assembly for the fuel injector, the method comprising:
a mounting step of mounting the base material on a jig so as to partition a coated region and an uncoated region of the base material from each other;
a bonding layer forming step of stacking a bonding layer on an outer peripheral surface of the base material;
a support layer forming step of stacking a support layer on an outer surface of the bonding layer; and
a functional layer forming step of stacking a silicon monoxide, diamond-like carbon (SiO-DLC) functional layer on an outer surface of the support layer,
wherein the jig comprises:
a support portion having one end in an axial direction with and by which the base material having a spherical shape is in contact with so as to form the uncoated region in the base material; and
an attractive force generating portion disposed on an opposite end of the support portion in the axial direction and generating a magnetic force so as to mount the base material.