Titanium alloy made brake rotor and its manufacturing method
US6139659A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jul 24, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2250/0092
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Modern brake rotors require enhanced resistance to thermal stress in order to withstand vigorous operating conditions. A brake rotor manufactured from (.alpha.+.beta.) titanium alloy will fulfill the thermal stress requirements when an equiaxed grain structure is imposed on the alloy. The equiaxed grains can preferably range from 300 .mu.m to 3 mm in size. The equiaxed grain structure is attained by heat treating the brake rotor at the .beta. phase transformation temperature, followed by quenching. When Ti-6Al-4V titanium alloy is used to form the brake rotor, .beta. phase transformation temperature is 1000.degree. C. the heat treatment temperature range is 986-1200.degree. C. The preferable heat treatment for Ti-6Al-4V alloy is 1050.degree. C. for 2 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.