AIRTIGHT STRUCTURE AND AIRTIGHT SEALING METHOD OF SEALED VESSEL, AND HARD DISK DRIVE DEVICE INCLUDING AIRTIGHT STRUCTURE

Title:

AIRTIGHT STRUCTURE AND AIRTIGHT SEALING METHOD OF SEALED VESSEL, AND HARD DISK DRIVE DEVICE INCLUDING AIRTIGHT STRUCTURE

Document Type and Number:

Japanese Patent JP2017075340

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To surely bury and plate burrows during casting in a small number of steps when subjecting a sealed aluminum die cast vessel to plating.SOLUTION: A resin is impregnated in burrows formed during casting by performing resin impregnation by electrodeposition-coating, for example, an epoxy based resin having high permeability on a chemical conversion coating layer 3 formed on a base material 1 having a ground part 2 formed in a predetermined place to form an impregnated resin layer 4. Thereby, the airtightness of a sealed vessel formed of the base material 1 is obtained, and subsequent plating can be excellently performed. After a predetermined working part 5 is worked if needed, a nickel plating layer 7 is formed on the impregnated resin layer 4 by electroless nickel plating.SELECTED DRAWING: Figure 1

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Inventors:

SATO KAZUAKI
SHIRAI MASAHARU
OSHIMA TOMOYA
MASUDA TOMOMI

Application Number:

JP2015201694A

Publication Date:

April 20, 2017

Filing Date:

October 13, 2015

Export Citation:

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Assignee:

KUROSAKA MEKKI KOGYOSHO:KK

International Classes:

C23C28/00; B22D29/00; C23C18/18; C25D13/00; G11B25/04; G11B33/12

Attorney, Agent or Firm:

Hideto Mochizuki

Previous Patent: JP2017075339

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