scholarly journals Influence of the cutting edge microgeometry on the tool life in austenitic stainless steel machining with carbide end mill

2017 ◽  
Vol 112 ◽  
pp. 01016 ◽  
Author(s):  
Marius-Bogdan Bozga ◽  
Marcel Sabin Popa ◽  
Stefan Sattel ◽  
Vlad-Bogdan Tomoiagă
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
Cutting Edge ◽  
End Mill

Effects of Nanometric Control in Tool Cutting Edge Sharpness on Micropunching of Austenitic Stainless Steel SUS304

2020 ◽  
Vol 61 (714) ◽  
pp. 147-153
Author(s):  
Tomomi SHIRATORI ◽  
Tomoaki YOSHINO ◽  
Takuya AIHARA ◽  
Yohei SUZUKI ◽  
Shizuka NAKANO ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Cutting Edge ◽  
Edge Sharpness ◽  
Tool Cutting

Experimental Study on Nano-TiAlN Coated Carbide Tools in Turning Austenitic Stainless Steel

2012 ◽  
Vol 723 ◽  
pp. 247-251
Author(s):  
Hai Dong Yang ◽  
Zhi Ding
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Dry Cutting ◽  
Processing Efficiency ◽  
Machined Surface ◽  
Tool Wear Mechanism ◽  
Coated Carbide

Austenitic stainless steel has poor cutting performance, especially when the inappropriate choice of tool materials and cutting parameters, cutting tool life will be shortened and the quality of machined surface is poor. In this paper, 0Cr18Ni9 stainless steel dry cutting tests had been done with nano-TiAlN coated carbide blade YGB202, the relationship between tool life and cutting speed, tool wear mechanism had been analyzed. In order to improve the processing efficiency and tool life, process parameters were optimized.

The Optimization of Cutting Parameter of Machining the Small Diameter Deep Hole on Austenitic Stainless Steel

2010 ◽  
Vol 142 ◽  
pp. 103-106
Author(s):  
Zhi Rong Huang
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Objective Function ◽  
Tool Life ◽  
Small Diameter ◽  
Cutting Parameters ◽  
Spindle Speed ◽  
Twist Drill ◽  
Deep Hole ◽  
Cutting Parameter

In this paper, objective function for the highest productivity and longer life of the twist drill is built. Though using Materlab software to draw the curves of the changes of feed, spindle speed, tool life and productivity, a way to find the better cutting parameters of machining the small diameter deep hole on the SUS316 austenitic stainless steel with the twist drill is introduced. The better cutting parameters are obtained.

The Development of Special Drills for High-Efficient Drilling Austenitic Stainless Steel Part I: Drill Comparison and Experiment Research

2006 ◽  
Vol 315-316 ◽  
pp. 195-199 ◽  
Author(s):  
Gang Liu ◽  
Ming Chen ◽  
Lu Lu Jing ◽  
Z.G. Hu ◽  
X.F. Zhu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Helix Angle ◽  
Drilling Performance ◽  
High Efficient ◽  
Cutting Point

Austenitic stainless steel is a kind of difficult-to-cut material widely utilized in various industry fields. But cutting tools is the uppermost obstacle in the application of high efficient and precise machining of austenitic stainless steel. Drill is the one of the most complicated universal cutting tools, whose geometry structure influences greatly on drilling performance. So the development of special drills is imperative for high-efficient drilling. This paper presented the optimal geometrical characteristics of the special drills, with138° point angle and 38° helix angle, for high-efficient drilling austenitic stainless steel. The drilling performance has been evaluated completely and comprehensively through the experiments including measuring cutting deformation coefficient, thrust force, torque, cutting temperature near the cutting point, cutting tool life, drill wear mechanism and so on. The special drill indicated appreciated cutting performance during drilling austenitic stainless steel with high efficiency. Compared to the commercial available standard drill with 118° point angle and 32° helix angle, the cutting tool life of the special drill was 1.6 times of the standard drill and the special drill yielded good performance of chip evacuation, good wear resistance and great drilling quality.

Performances of Carbide Tools in Machining 18-8 Stainless Steel

1961 ◽  
Vol 83 (4) ◽  
pp. 572-578 ◽  
Author(s):  
H. Takeyama
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
Work Hardening ◽  
Flank Wear ◽  
Cutting Conditions ◽  
Optimum Cutting

The austenitic 18-8 stainless steel is one of the most troublesome materials to be machined because of the tendencies of work-hardening, high temperature, and adhesion. The ultimate object of the experiment is to establish the machining standard of the austenitic stainless steel with carbide tools based upon tool life. Generally speaking, tool life in a modern machining practice should be specified not only by the flank wear, but by the crater. This paper describes the process of obtaining the optimum cutting conditions for turning the stainless steel from the viewpoint of tool life, and discusses how the tool life is governed by flank wear and crater depending upon the cutting conditions.

The Development of Special Drills for High-Efficient Drilling Austenitic Stainless Steel Part II: Coating Selection and Experiment Research

2006 ◽  
Vol 315-316 ◽  
pp. 200-204 ◽  
Author(s):  
Ming Chen ◽  
Gang Liu ◽  
Lu Lu Jing ◽  
Z.G. Hu ◽  
X.F. Zhu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
High Speed ◽  
Cutting Tool ◽  
Removal Rate ◽  
High Speed Steel ◽  
Steel Part ◽  
Ticn Coating ◽  
High Efficient

Coating is an effective method to solve the contradiction between the wear resistance and the toughness for tool materials and the coated tool can yield satisfied cutting performances. Now the coated high-speed steel (HSS) drill is widely used in drilling of stainless steel. This paper studied the tool life of the TiN, the TiAlN and the TiCN coated special drills in drilling austenitic stainless steel 1Cr18Ni9Ti through contrastive experiments. The tool life of the TiN coated drill was only 81.5% of TiCN, and 66% of TiAlN because of its low oxidization resistance and hardness. The wearing features of TiAlN and TiCN coating were also studied by experiments and the different wear mechanisms were revealed. Finally the comparison of cutting performance was given between TiAlN and TiCN coated drills and recommendation of coating selection for drilling austenitic stainless steel was also presented. TiCN coating is suitable for HSS cutting tool base, which is often used for drilling austenitic stainless steel at low speed. TiAlN coating is appropriate for tungsten carbide cutting tool base, which is used for drilling austenitic stainless steel at high speed. The special designed drill with optimal geometrical structure plus appropriate coating can yield long tool life and high material removal rate in high-efficient drilling austenitic stainless steel.

scholarly journals Investigations on Strain Hardening During Cutting of Heat-Resistant Austenitic Stainless Steel

2020 ◽  
Vol 142 (5) ◽  
Author(s):  
Rabiae Arif ◽  
Guillaume Fromentin ◽  
Frédéric Rossi ◽  
Bertrand Marcon
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Plastic Strain ◽  
Strain Hardening ◽  
Subsurface Layer ◽  
Hardened Layer ◽  
Cutting Edge ◽  
Cutting Process ◽  
Image Correlation ◽  
Correlation Technique

Abstract This study presents a novel analysis of the machined subsurface layer formation dealing with strain hardening phenomenon which results from complex mechanisms due to cutting edge multiple passes in drilling. On the one hand, the hardened layer during drilling is characterized in relation with the local cutting geometry and thanks to a quick-stop device (QSD) to suddenly interrupt the operation. Micro hardness is used to determine the hardened thickness of the machined subsurface layers along the local cutting edge geometry. On the other hand, orthogonal cutting performed with a complex self-designed planing experiment is used to investigate in details the hardening accumulation aspects. Then, dedicated methodologies are proposed to quantify the strain hardening as well as the incremental plastic strain generated by consecutive tool passes. In addition to the subsurface hardness evolution, the work material strain is observed during the steady-state cutting process thanks to the high-speed camera. The digital image correlation technique is exploited to analyze not only the plastic strain remaining on the workpiece after the cut but also the effect of the incremental plastic strain generated by the consecutive planing passes as the cutting edges in drilling do. One of the outcomes is that the hardened layer thickness can reach from two to three times the cut thickness in drilling or in planing. As a consequence, this work demonstrates that the cutting process affects itself by hardening. Thus, the studied austenitic stainless steel in such a way that this last is never cut in its initial state.

Electro-polishing of tungsten carbide ball nose end mill to improve tool life

2015 ◽  
Vol 231 (4) ◽  
pp. 667-675 ◽  
Author(s):  
Ramesh Kuppuswamy ◽  
Kapui Mubita
Keyword(s):  
Tungsten Carbide ◽  
Tool Life ◽  
Surface Texture ◽  
Flank Wear ◽  
Electrolytic Cell ◽  
Cutting Edge ◽  
End Mill ◽  
End Mills ◽  
Cutting Edge Preparation ◽  
Edge Preparation

Electro-polishing was used as an alternative to mechanical polishing for the cutting edge preparation of tungsten carbide (WC) ball nose end mills. High-quality cutting edge surfaces with roughness of magnitude 0.3–0.35 µm was achieved using the electro-polishing process. A direct current of 0.96 A was passed through an electrolytic cell containing the electrolyte sodium hydroxide with a concentration—2.5 mol/dm3. The ball nose end mill was suspended as the anode and a stainless steel (SS304) as the cathode. The ball nose end mill was electro-polished using the optimized parameters which was obtained through performing the preliminary experiments on tungsten carbide coupons of size D6 × 20 mm. The effects of electro-polishing on the surface texture of the ball nose end mill were determined using surface texture examinations. Machining tests were conducted on Ti6Al4V alloy to understand the growth of flank wear on the electro-polished ball nose end mills. After every 5 m of cutting distance, flank wear measurements were done for both the regular ball nose end mill and the electro-polished ball nose end mills. The results revealed that the electro-polished ball nose end mill reached a flank wear of 0.15 mm after a cutting distance of 550 m. This was significantly more than the cutting distance of the standard ball nose end mill of magnitude 350 m for the same amount of flank wear. This showed an increase in tool life of over 50%.

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