High speed broaching of hard machining materials

Abstract

Materials have been broaching on various speeds of cutting are presented. Comparative research of influence the traditional broaching on low speeds of cutting (V=2 m/min) by the broaches from high speed steel R18 and the high-speed broaching (V=26 m/min) by the hard-alloy broaches VK8 on the change of intensity of wear of the broaches and formation of key parameters of quality of a superficial layer -a roughness and fatigue durability. Introduction of the high-speed broaching promotes the receipt of higher and stable parameters of quality of a superficial layer, increase of fatigue durability, reliability and a resource of gas-turbine engine parts and the minimal values of the tool wear intensity.

Machining of Hard Materials – Definitions and Industrial Applications

“…As such, the tool life characterized by the intensity of tool wear (the linear wear rate v L ) [36] is proportional to t 1 , as reported by Makarov et al [37] in machining of high-nickel (35 %) alloy, when t 1 = 0.02 mm,…”

Mini symposium on cutting and machining: 25 years of ESAFORM activity

“…Response Surface Methodology (RSM) (Del Prete et al 2010a) and ANOVA (Saffioti et al 2021b) were commonly applied to generate empirical models and assess the most influential parameters. In broaching, Makarov et al (2008) and Arrieta et al (2017) showed that surface roughness was also highly dependent on the microstructure of the material especially due to the small uncut chip thickness compared to the grain size. Whereas this parameter is relatively well controlled in general, it may require the use of alternative lubrication methods in machining such as High-Pressure-Jet-Assisted-Machining (HPJAM) when cutting duplex stainless steels (Braham-Bouchnak et al 2010), cryogenic fluid when cutting titanium alloys (Bellin et al 2017) or even recently (Bertolini et al 2021) on ultra-high-molecular weight polyethylene.…”

Technology of Broaching – Research of the Roughness and Machine Capability

“…Authors [Makarov 2008] present the materials of broaching on various speeds of cutting are presented. Comparative research of influence the traditional broaching on low speeds of cutting (vc = 2 m.min -1 ) by the broaches from high speed steel R18 and the high-speed broaching (vc = 26 m.min -1 ) by the hard-alloy broaches VK8 on the change of intensity of wear of the broaches and formation of key parameters of quality of a superficial layer -a roughness and fatigue durability.…”