Manufacturing method of wear-resistant iron-based sintered alloy and wear-resistant iron-based sintered alloy
US10619229B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 13, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Mar 22, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2303/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An iron alloy powder consists of, when the entirety thereof is assumed to be 100 mass %, Cr: 2.5 mass % to 3.5 mass %, Mo: 0.4 mass % to 0.6 mass %, and Fe and inevitable impurities as the balance, a mixed powder consisting of 15 mass % to 40 mass % of the iron alloy powder, 1.2 mass % to 1.8 mass % of a copper powder, 0.5 mass % to 1.0 mass % of a graphite powder, and a pure iron powder as the balance when the entire mixed powder is assumed to be 100 mass % is compacted into a compact, and the compact is sintered while transforming a structure derived from the pure iron powder into a structure in which a ferritic structure and a pearlitic structure are mixed and transforming a structure derived from the iron alloy powder into a martensitic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.