A study on film hole drilling of IN718 superalloy via laser machining combined with high temperature chemical etching

• Published in: International journal of advanced manufacturing technology Vol. 106; no. 1-2; pp. 155 - 162
• Main Authors: Zhang, Qiang, Sun, Shu-Feng, Zhang, Feng-Yun, Wang, Jin, Lv, Qiang-Qiang, Shao, Yong, Liu, Qing-Yu, Shao, Jing, Liu, Xin-Fu, Zhang, Yan
• Format: Journal Article
• Language: English
• Published: London Springer London 2020; Springer Nature B.V
• Subjects: CAE) and Design; Chemical etching; Computer-Aided Engineering (CAD; Defocusing; Drilling; Engineering; Etching; Heat affected zone; High temperature; Hydrochloric acid; Industrial and Production Engineering; Laser machining; Lasers; Mechanical Engineering; Media Management; Morphology; Nickel base alloys; Organic chemistry; Original Article; Pulsed lasers; Room temperature; Superalloys; Tapering; IN718; Laser machining; Film holes; High temperature chemical etching

A novel method of laser machining combined with high temperature chemical etching (LMHTCE) was proposed. This novel method can take full advantage of both approaches to drill film holes in an IN718 superalloy without a recast layer or a heat affect zone (HAZ). A solution of hydrochloric acid and sod...