Effect of EDM Parameters on Surface Roughness When Processing SKD11 Tool Steel

2022 ◽  
pp. 384-391
Author(s):  
Nguyen Hong Linh ◽  
Tran Ngoc Giang ◽  
Nguyen Huu Quang ◽  
Nguyen Huu Luan ◽  
Le Hoang Anh ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Tool Steel

INFLUENCE OF NITROGEN FLOW RATE ON FRICTION COEFFICIENT AND SURFACE ROUGHNESS OF TiN COATINGS DEPOSITED ON TOOL STEEL USING ARC METHOD

2007 ◽  
Vol 14 (05) ◽  
pp. 1007-1013 ◽  
Author(s):  
ESAH HAMZAH ◽  
ALI OURDJINI ◽  
MUBARAK ALI ◽  
PARVEZ AKHTER ◽  
MOHD RADZI HJ. MOHD TOFF ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Friction Coefficient ◽  
Tool Steel ◽  
Flow Rate ◽  
Physical Vapor Deposition ◽  
Gas Flow ◽  
Cutting Tools ◽  
Gas Flow Rate ◽  
Pin On Disc ◽  
The Coefficient Of Friction

In the present study, the effect of various N 2 gas flow rates on friction coefficient and surface roughness of TiN -coated D2 tool steel was examined by a commercially available cathodic arc physical vapor deposition (CAPVD) technique. A Pin-on-Disc test was carried out to study the Coefficient of friction (COF) versus sliding distance. A surface roughness tester measured the surface roughness parameters. The minimum values for the COF and surface roughness were recorded at a N 2 gas flow rate of 200 sccm. The increase in the COF and surface roughness at a N 2 gas flow rate of 100 sccm was mainly attributed to an increase in both size and number of titanium particles, whereas the increase at 300 sccm was attributed to a larger number of growth defects generated during the coating process. These ideas make it possible to optimize the coating properties as a function of N 2 gas flow rate for specific applications, e.g. cutting tools for automobiles, aircraft, and various mechanical parts.

Wear Behavior of Different Materials Applied on Horizontal Mixer Blades Used in the Processing of Total Mixed Rations

2019 ◽  
Vol 62 (6) ◽  
pp. 1743-1753
Author(s):  
Tao Wang ◽  
Baoqin Wen ◽  
Za Kan ◽  
Jingbin Li
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Tool Steel ◽  
Working Conditions ◽  
Electron Backscatter Diffraction ◽  
Spring Steel ◽  
Manganese Steel ◽  
Wear Performance ◽  
Electron Backscatter ◽  
Backscatter Diffraction

Abstract. A horizontal mixer can realize the cutting and mixing of coarse and fine feeds and achieve the purpose of scientific feeding. Studying the wear resistance of the mixer blades can improve the service life of a horizontal mixer. The wear performance of blades made of three different materials (manganese steel, tool steel, and spring steel) was studied under laboratory conditions and working conditions. In laboratory conditions, the wear scar morphology and surface elements were analyzed by means of three-dimensional topography, scanning electron microscopy, and energy spectrum analysis. The results show that the friction coefficient, wear quality, and surface roughness of manganese steel blades had the lowest values of 0.49158, 0.0061 mg, and 4.341 µm in three groups of tests. In working conditions, the wear amount and surface roughness of the manganese steel blades in different zones of the mixer were the lowest. In addition, electron backscatter diffraction (EBSD) results showed that the grain size of the manganese steel blades was the smallest. Therefore, compared with the tool steel and spring steel blades, the manganese steel blades showed excellent wear resistance.HighlightsThe wear characteristics of horizontal mixer blades with different materials were studied.The wear characteristics of the blades were studied under laboratory and working conditions.The effect of grain on the wear performance of the blades was studied by electron backscatter diffraction. Keywords: Blade, Grain, Horizontal mixer, Wear resistance, Wear test.

Optimization of Machining Time and Surface Quality of AISI D2 Tool Steel in WEDM Using Taguchi Methodology and Desirability Analysis

2020 ◽  
Vol 977 ◽  
pp. 27-33
Author(s):  
Carmita Camposeco-Negrete ◽  
Juan de Dios Calderón-Nájera
Keyword(s):  
Surface Roughness ◽  
Tool Steel ◽  
Cutting Parameters ◽  
Machining Time ◽  
Aisi D2 ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Aisi D2 Tool Steel ◽  
Off Time

One of the non-conventional machining processes widely used in the industry is the wire electrical discharge machining (WEDM). This process has many advantages, like the great precision and quality that can be achieved. As well as other manufacturing operations, the success of the process relies on a correct selection of the cutting parameters. The present paper outlines an experimental study to optimize the machining time and the surface roughness in WEDM of AISI D2 tool steel during roughing machining. The Taguchi methodology is used to evaluate the effects and contributions of the pulse-on time, pulse-off time, servo voltage, and wire speed, on the response variables. The desirability method is employed to define a set of cutting parameters that allows reducing both machining time and surface roughness at the same time. The pulse-on time is the most significant factor for reducing the machining time, followed by the servo voltage, the pulse-off time and the wire speed. For surface roughness, the pulse-off time is the factor with the greatest influence over the response variable. The results obtained show that the machining time is reduced by 4.65%, and the surface roughness is diminished by 4.60% when compared with the initial values that are commonly used in the machining of AISI D2 tool steel. Therefore, greater production rates can be achieved without compromising the quality of the machined parts.

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