Title:
ELECTRODEPOSITION COATING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP2019127642
Kind Code:
A
Abstract:
To suppress unevenness of an electrodeposition coating layer formed on a surface of a coated matter on which an amorphous thin film chemical conversion treatment layer is formed.SOLUTION: The electrodeposition coating method comprises: a chemical conversion treatment step for forming a chemical conversion treatment layer on a surface of an automotive body; and an electrodeposition coating step for forming an electrodeposition coating layer on the chemical conversion treatment layer. The chemical conversion treatment step includes a chemical conversion step for forming an amorphous thin film chemical conversion treatment layer on a surface of the automotive body, the electrodeposition coating step includes a first electrodeposition step for forming a first electrodeposition coating on the automotive body, a thermal flow step for performing thermal flow of the first electrodeposition coating so that, electric resistance of the first electrodeposition coating formed on an external plate part of the automotive body becomes higher than that of the first electrodeposition coating formed on an inner plate part, and a second electrodeposition step for forming a second electrodeposition coating on the automotive body.SELECTED DRAWING: Figure 1
Inventors:
SHINODA MASAFUMI
MATSUI HIROTAKA
MATSUI HIROTAKA
Application Number:
JP2018011693A
Publication Date:
August 01, 2019
Filing Date:
January 26, 2018
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
C25D13/14; C25D13/00; C25D13/20
Attorney, Agent or Firm:
Maeda patent office