Estimation of Possibilities of the Productivity Rise at Turning of Hard-Processing Materials

2014 ◽  
Vol 657 ◽  
pp. 63-67
Author(s):  
Tatiana Ivchenko ◽  
Vadim Boguslavskiy ◽  
Irina Petryaeva ◽  
Dmitriy Mihaylov
Keyword(s):  
Surface Roughness ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Fluid ◽  
Machined Surface ◽  
Machined Surface Roughness ◽  
Cutting Regimes ◽  
Machining Productivity ◽  
Coated Carbide

The Method of Estimation of Possibilities of the Machining Productivity Rise Taking into Account the Action of Cutting Fluid (TCF) and Coated Carbide Cutting Tools (CCT) for Rough and Fin-Ish Turning Corrosion-Proof, Heat Resisting and Stainless Steels and Alloys is Perfected. the Factor of Machining Productivity Rise at the Expense of Use TCF and CCT is Set. it is Executed Theoretical and Experimental Researches of Influence of the Cutting Regimes on the Cutting Temperature and the Ma-Chined Surface Roughness at Turning of Different Hard-Processing Steels and Alloys. Dependences of the Cutting Temperature and the Machined Surface Roughness on Cutting Speed, Feed and Depth Taking into Account the Action of TCF and CCT are Set. the Factors of Decline of the Machined Surface Roughness and the Cutting Temperature are Certain at the Use of TCF with Different Cooling and Lubri-Cant Properties. the Factors of Machining Productivity Rise are Certain under Various Conditions of the Rough and Finish Turning Different Corrosion - Proof, Heat Resisting and High - Resistance Steels and Alloys Depending on the Factor of the Cutting Temperature Decline and Factor of the Tool Life Rise. the Set Factor of Machining Productivity Rise Allows Estimating Efficiency of the Use of Various TCF and CCT for Different Hard-Processing Materials.

Experimental Investigation on Surface Roughness in Precision Cutting Ti6Al4V Alloy Using Diamond Tools

2014 ◽  
Vol 800-801 ◽  
pp. 576-579
Author(s):  
Lin Hua Hu ◽  
Ming Zhou ◽  
Yu Liang Zhang
Keyword(s):  
Surface Roughness ◽  
Cutting Speed ◽  
Polycrystalline Diamond ◽  
Cutting Parameters ◽  
Limited Range ◽  
Nose Radius ◽  
Machined Surface ◽  
Machined Surface Roughness ◽  
Titanium Alloy Ti6al4v ◽  
Pcd Tools

In this work, cutting experiments were carried out on titanium alloy Ti6Al4V by using polycrystalline diamond (PCD) tools to investigate the effects of the tool geometries and cutting parameters on machined surface roughness. Experimental results show machined surface roughness decreases with increases in the flank angle, tool nose radius and cutting speed within a limited range respectively, and begins to increase as the factors reaches to certain values respectively. And machined surface roughness decreases with increases in feed rate and cutting depth respectively.

Development of Cutting Tools With Micro-Textured Surface for High Speed Machining of Ti-6Al-4V

2021 ◽  
Author(s):  
Mitsuru Hasegawa ◽  
Tatsuya Sugihara
Keyword(s):  
Tool Life ◽  
High Speed ◽  
Metal Cutting ◽  
Failure Process ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Fluid ◽  
Textured Surface ◽  
Textured Surfaces

Abstract In cutting of Ti-6Al-4V alloy, the cutting speed is limited since a high cutting temperature leads to severe tool wear and short tool life, resulting in poor production efficiency. On the other hand, some recent literature has reported that various beneficial effects can be provided by forming micro-textures on the tool surface in the metal cutting process. In this study, in order to achieve high-performance machining of Ti-6Al-4V, we first investigated the mechanism of the tool failure process for a cemented carbide cutting tool in high-speed turning of Ti-6Al-4V. Based on the results, cutting tools with micro textured surfaces were developed under the consideration of a cutting fluid action. A series of experiments showed that the textured rake face successfully decreases the cutting temperature, resulting in a significant suppression of both crater wear and flank wear. In addition, the temperature zone where the texture tool is effective in terms of the tool life in the Ti-6Al-4V cutting was discussed.

Effect of Machining Parameters and MQL Liquids on Surface Integrity of High Speed Drilling Ti-6Al-4V

2010 ◽  
Vol 447-448 ◽  
pp. 816-820 ◽  
Author(s):  
Erween Abdul Rahim ◽  
Hiroyuki Sasahara
Keyword(s):  
Surface Roughness ◽  
Palm Oil ◽  
Surface Integrity ◽  
High Speed ◽  
Cutting Speed ◽  
Machining Parameters ◽  
Machined Surface ◽  
Subsurface Deformation ◽  
High Speed Drilling ◽  
Coated Carbide

Surface integrity is particularly important for the aerospace industry components in order to permit longer service life and maximized its reliability. This present work compares the performance of palm oil and synthetic ester on surface roughness, surface defect, microhardness and subsurface deformation when high speed drilling of Ti-6Al-4V under MQL condition. The drilling tests were conducted with AlTiN coated carbide tool. The surface roughness decreased with increasing in cutting speed and thicker subsurface deformation was formed underneath the machined surface. Grooves, cavities, pit holes, microcracks and material smearing were the dominant surface damages thus deteriorated the machined surface. For both lubricants, the machined surface experienced from thermal softening and work hardening effect thus gave a variation in microhardness values. The results indicated the substantial benefit of MQL by palm oil on surface integrity.

A Study of Surface Integrity when Machining Refractory Titanium Alloys

2009 ◽  
Vol 83-86 ◽  
pp. 1059-1068 ◽  
Author(s):  
Armansyah Ginting ◽  
Mohammed Nouari ◽  
Nadhir Lebaal
Keyword(s):  
Surface Roughness ◽  
Titanium Alloys ◽  
Surface Integrity ◽  
Bulk Material ◽  
Cutting Speed ◽  
Cutting Condition ◽  
Feed Speed ◽  
Machined Surface ◽  
Feed Mark ◽  
Coated Carbide

In this paper, the surface integrity is studied when machining the aeronautical titanium alloys. Surface roughness, lay, defects, microhardness and microstructure alterations are studied. The result of surface roughness judges that the CVD-coated carbide fails to produce better Ra value than the uncoated. Lay is characterized by cutting speed and feed speed directions. Feed mark, tearing surface, chip layer formation as built up layer (BUL), and deposited microchip are the defects. Microhardness is altered down to 350 microns beneath the machined surface. The first 50 microns is the soft sub-surface caused by thermal softening in ageing process. Microstructure alteration is observed in this sub-surface. Down to 200 microns is the hard sub-surface caused by the cyclic internal work hardening and then it is gradually decreasing to the bulk material hardness. It is concluded that dry machining titanium alloy is possible using uncoated carbide with cutting condition limited to finish or semi-finish for minimizing surface integrity alteration.

Machining parameters effect in dry turning of AISI 316L stainless steel using coated carbide tools

2015 ◽  
Vol 231 (4) ◽  
pp. 676-683 ◽  
Author(s):  
Rusdi Nur ◽  
MY Noordin ◽  
S Izman ◽  
D Kurniawan
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Power Consumption ◽  
Cutting Force ◽  
Tool Life ◽  
Cutting Speed ◽  
Cutting Fluid ◽  
Machining Parameters ◽  
Aisi 316L ◽  
Coated Carbide

Austenitic stainless steel AISI 316L is used in many applications, including chemical industry, nuclear power plants, and medical devices, because of its high mechanical properties and corrosion resistance. Machinability study on the stainless steel is of interest. Toward sustainable manufacturing, this study also includes the power consumption during machining along with other machining responses of cutting force, surface roughness, and tool life. Turning on the stainless steel was performed using coated carbide tool without using cutting fluid. The turning was performed at various cutting speeds (90, 150, and 210 m/min) and feeds (0.10, 0.16, and 0.22 mm/rev). Response surface methodology was adopted in designing the experiments to quantify the effect of cutting speed and feed on the machining responses. It was found that cutting speed was proportional to power consumption and was inversely proportional to tool life, and showed no significant effect on the cutting force and the surface roughness. Feed was proportional to cutting force, power consumption, and surface roughness and was inversely proportional to tool life. Empirical equations developed from the results for all machining responses were shown to be useful in determining the optimum cutting parameters range.

scholarly journals Optimisation of the Machining of Stellite 6 PTA Hardfacing Using Surface Roughness

2010 ◽  
Vol 443 ◽  
pp. 227-231 ◽  
Author(s):  
Md Shahanur Hasan ◽  
Md Mazid Abdul ◽  
Richard E. Clegg
Keyword(s):  
Surface Roughness ◽  
Cutting Speed ◽  
Deposition Process ◽  
Depth Of Cut ◽  
High Corrosion Resistance ◽  
Turning Operations ◽  
Stellite 6 ◽  
Cutting Regimes ◽  
Coated Carbide ◽  
Carbide Inserts

Stellites are cobalt based super alloys. By virtue of their excellent physio-mechanical properties, stellites are highly regarded engineering materials. Stellites posses high corrosion resistance and wear resistance properties. This study investigates the Stellite deposition process and machinability of Stellite 6 deposited on steel subtrate. Stellite 6 was deposited onto a 4140 bar using a plasma transfer arc (PTA) system and machinability was assessed on the basis of surface roughness. A series of turning operations have been carried out on a conventional lathe using coated carbide inserts and surface roughness was evaluated by Stylus type Surtronic3+ instrument. The values of surface roughness were plotted against different cutting speed, feed rate and depth of cut to display the results in graphical forms. Optimal cutting regimes were established against the best values of surface roughness.

Surface Roughness in High Feed Turning with Wiper Insert

2008 ◽  
Vol 375-376 ◽  
pp. 406-410 ◽  
Author(s):  
Zhan Qiang Liu ◽  
Peng Zhang ◽  
Peng Guo ◽  
Xing Ai
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
Machined Surface ◽  
Good Surface ◽  
Corner Radius ◽  
Number Of Factors ◽  
Machined Surface Roughness ◽  
High Feed ◽  
Good Surface Roughness ◽  
Coated Carbide

Surface roughness in a turning operation is affected by a great number of factors. Two of the most important factors are feed rate and the size of the corner radius. Surface roughness can be roughly determined to increase with the square of the feed rate and decrease with increased size of the corner radius. However, wiper insert geometries changed this relationship with the capability to generate good surface roughness at relatively higher feeds by transferring small part of the round insert edges into the straight cutting edges of the pointed insert. The principle of how wiper inserts behave different from conventional inserts as to the effects on the surface roughness is explored in this paper. Experimental study of the surface roughness produced in the turning of hardened mild steels using coated carbide tools with both conventional and wiper inserts is conducted. The test results prove the effectiveness of the wiper inserts in providing excellent surface roughness. The results also suggest that the use of the wiper insert is an effective way that significantly increases cutting efficiency without changing the machined surface roughness in high feed turning operations.

scholarly journals Machinability Investigation in Dry Turning of Ti–6al–4v With a Novel Tib2-based Cermet Tool Using Response Surface Methodology

2020 ◽  
Author(s):  
Yikun Yuan ◽  
Wenbin Ji ◽  
Shijie Dai ◽  
Huibo Zhang
Keyword(s):  
Surface Roughness ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Machining Parameters ◽  
Processing Efficiency ◽  
Machined Surface ◽  
Dry Turning ◽  
Diffusion Wear ◽  
Cutting Length ◽  
Machined Surface Roughness

Abstract To ensure accuracy and improve the processing efficiency of Ti–6Al–4V alloys, dry turning experiment of Ti–6Al–4V was carried out using a novel TiB2-based cermet tool. The tool was reinforced by nanoscale VC additive and exhibited excellent hardness and fracture toughness.Response Surface Methodology (RSM) was used in the experiment to verify andevaluatethe cutting performance ofTiB2-based cermet tool.The cutting forces and machined surface roughness (Ra) were selected as the optimization objective. An analysis of variance (ANOVA) was used to find out the effective machining parameters on response factorsand demonstrate correctness of the models. It was found that theeffective factor on surface roughness was feed rate, while cutting depth significantly affected cutting forces.And the confirmation experiments showedthat the predicted values were in good agreement with experimental values. Based on the optimized cutting parameters, the tool life was measured and tool wear mechanismwasinvestigated. When the vc, apandfwere 100 mm/min, 0.16 mm, 0.1 mm/rev respectively for Ra optimization, the cutting length and tool lifecould reach to 3233 m and 29.4 min, respectively, due to the excellentwear resistance and stability of TiB2-based cermet tool at high cutting temperature. In this case, the main wear mechanism was adhesive wear and diffusion wear.

scholarly journals Performance evaluation of rubber seed oil based cutting fluid in turning mild steel

2021 ◽  
Vol 40 (4) ◽  
pp. 648-659
Author(s):  
A.O. Osayi ◽  
S.A. Lawal ◽  
M.B. Ndaliman ◽  
J.B. Agboola
Keyword(s):  
Surface Roughness ◽  
Seed Oil ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Mineral Oil ◽  
Cutting Fluid ◽  
Depth Of Cut ◽  
Rubber Seed Oil ◽  
Water Emulsion ◽  
Rubber Seed

Due to the negative effects associated with the wide use of mineral oil, the desire for eco-friendly cutting fluids as alternative to mineral oil has become a global issue. In this study, rubber seed oil was used to formulate oil-in-water emulsion cutting fluid. Full factorial design was used for the formulation of the oil-in-water emulsion cutting fluid. The optimal process parameters obtained were used for the formulation of the novel cutting fluid and the cutting fluid was characterised. The characteristics of the formulated cutting fluid shows viscosity of 4.25 mm2/s, pH value of 8.3, high stability and corrosion resistant. Box-Behnken design was used for the turning operation and the performance of the rubber seed oil cutting fluid was compared with mineral oil. The input parameters were cutting speed, feed rate and depth of cut, while the responses were surface roughness and cutting temperature. Coated carbide insert was used as cutting tool. The ANOVA results show that the feed rate had the most significant effect on the surface roughness and cutting temperature followed by the cutting speed and depth of cut during the turning process. It was observed that the rubber seed oil based cutting fluid reduced surface roughness and cutting temperature by 9.79% and 1.66% respectively and therefore, it can be concluded that the rubber seed oil based cutting fluid performed better than the mineral oil in turning of mild steel.

Sign in / Sign up

Export Citation Format

Share Document