Title:
MANUFACTURING METHOD OF PISTON FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2020012413
Kind Code:
A
Abstract:
To provide a manufacturing method of a piston for an internal combustion engine which can form a favorable functional layer by homogeneously distributing the powder of a functional sintering material to a crown surface of the piston.SOLUTION: A functional layer is formed on a piston crown surface by performing: a first-state functional layer installation process S14 for holding a functional powder sintering material, and installing a first-state functional layer 31 composed of a holding agent including at least one of resin, adhesive and wax on the piston crown surface; and sintering processes S16, S17 performed after the first-state functional layer installation process, for creating a second-state functional layer by heating (S15) the first-state functional layer, the second-state functional layer being reduced in volume of the holding agent more than that of the first-state functional layer and being a functional sintered body obtained by sintering the functional powder sintering material.SELECTED DRAWING: Figure 7
Inventors:
SASAKI MASATO
FUJIE SHUN
FUJIE SHUN
Application Number:
JP2018134820A
Publication Date:
January 23, 2020
Filing Date:
July 18, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
C23C24/10; F02F3/00; F02F3/10; F16J1/01
Domestic Patent References:
| JP2012117482A | 2012-06-21 | |||
| JP2017008835A | 2017-01-12 | |||
| JPH07150368A | 1995-06-13 | |||
| JPS62202709A | 1987-09-07 | |||
| JPS61163282A | 1986-07-23 |
Foreign References:
| WO2018061591A1 | 2018-04-05 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation