Method and apparatus for laser quenching

US10106864B2 · kind B2 · utility

Assignee

• Wuhan Hivalue Intelaser Ltd. · CN

Inventors

• Xiaoyan Zeng · Hubei, CN
• Qianwu Hu · 红钢城街道, CN
• Yinlan Zheng · 红钢城街道, CN
• Ming Jiang · Nanhu, CN
• Chongyang Li · 安丰镇, CN
• Zhao hui Ren · Shenyang, CN
• Kun-Pei Li · Hsinchu, TW

Key dates

• Filing date: Nov 7, 2013
• Grant date: Oct 23, 2018
• Expiry date: May 9, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D1/70
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Provided are a method and an apparatus for laser quenching. The method utilizes a scanning galvanometer, and involves laser quenching via irradiation with intermittent, repeated scans, rather than a single scan as in the prior art. The method results in increased laser energy absorbed by the metal base and improved depth of thermal conduction, while avoiding melting at the metal surface, thus providing a significantly improved laser quenching process. The apparatus can include a laser, a control system, a light guiding system, a mechanical motion device and a galvanometer.