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

Claim 4:
5. A coating jig for an assembly for a fuel injector contacted with a base material of the assembly for the fuel injector having a coated region and an uncoated region on a surface thereof to form a coating material including a bonding layer stacked on the coated region, a support layer stacked on an outer surface of the bonding layer, and an SiO-DLC functional layer stacked on an outer surface of the support layer, the coating jig comprising:
a support portion having one end in an axial direction with and by which the base material having a spherical shape is in contact and is supported and provided 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;
wherein the support portion includes:
a support portion body formed in a cylindrical shape at a predetermined thickness; and
a masking surface formed at one end of the support portion body in the axial direction and concavely formed so as to be in surface-contact with the base material to form the uncoated region on the base material.