Enhancement of cutting quality of abrasive waterjet by using multipass cutting strategy

2020 ◽  
Vol 60 ◽  
pp. 530-543
Author(s):  
Ahmed S. El Mesalamy ◽  
Amro Youssef
Keyword(s):  
Abrasive Waterjet ◽  
Cutting Strategy

Development of Cutting Strategy in Ultra-Precision Raster Milling of Freeform Surface

2014 ◽  
Vol 633-634 ◽  
pp. 615-619
Author(s):  
Su Juan Wang ◽  
Su Et To ◽  
Xin Chen ◽  
Jian Qun Liu
Keyword(s):  
Cutting Parameters ◽  
Integrated System ◽  
Machining Process ◽  
Freeform Surface ◽  
Machining Time ◽  
Tool Paths ◽  
Nc Program ◽  
Ultra Precision ◽  
Cutting Strategy

This paper studies the development of cutting strategy in the fabrication of freeform surface in ultra-precision raster milling (UPRM). The tasks of developing cutting strategy in freeform machining involve in the selection of cutting parameters and the planning of tool paths. An integrated system is built in this study to develop the cutting strategy, automatically generate NC program, simulate the tool paths and machining process, as well as make predictions for the machining time and the surface quality of the raster milled freeform surface. Experiment is conducted to verify the developed system and the experimental results show that the system is applicable for the machining of freeform surface in UPRM. This study therefore contributes to avoiding the need to conduct expensive and time consuming trial cutting tests to ensure the product quality in the freeform machining.

A Study of Cutting Strategy in Single-Point Diamond Turning of Micro V-Groove Patterns on Precision Roller Drums

2014 ◽  
Vol 625 ◽  
pp. 742-747
Author(s):  
C.H. Mak ◽  
C.F. Cheung ◽  
M.J. Ren ◽  
L.B. Kong ◽  
S. To
Keyword(s):  
Surface Quality ◽  
Single Point ◽  
Cutting Parameters ◽  
Diamond Turning ◽  
Surface Generation ◽  
Depth Of Cut ◽  
Tool Paths ◽  
Cutting Strategy ◽  
Groove Pattern

This paper presents a study of cutting strategies on the surface generation in single-point diamond turning of micro V-groove patterns on precision roller drums. An aluminium precision roller drum with a diameter 250mm and 100 long was diamond turned with a V-groove pattern. A series of cutting experiments were designed to study the effect of the variation of various cutting parameters and cutting tool paths on the surface quality in diamond turning of the precision roller drum. The parameters under investigation included the depth of cut, number of steps and the depth for each cut when diamond turning V-grooves on the cylindrical surface of a workpiece. The measurement result indicates that the surface quality of V-grooves machined on the precision roller drums is affected by cutting strategies. The optimal cutting strategy for machining a V-groove pattern on a precision drum with 5µm depth was obtained.

Observations on Cutting With 600-MPa Waterjets

2002 ◽  
Vol 124 (2) ◽  
pp. 229-233 ◽  
Author(s):  
Mohamed Hashish
Keyword(s):  
Sheet Metal ◽  
Technology Development ◽  
Process Development ◽  
Systems Development ◽  
Machining Process ◽  
Abrasive Waterjet ◽  
Elevated Pressures

Waterjet technology development for 600-MPa (87-Ksi) operations involves efforts on machining process development, pumps, plumbing, nozzles, and machining systems development. In this paper, data will be presented on cutting with water and abrasive waterjet at these elevated pressures. The effects of waterjet (WJ) and abrasive waterjet (AWJ) parameters on cutting rates of several materials are analyzed. It is observed that the power required for cutting is reduced as the pressure increases. Sheet metal and composites can be cut effectively with waterjets. The quality of the cut surfaces, however, improves by increasing pressure, adding abrasives, and operating at optimal standoff distances.

scholarly journals Experimental Study of the Ultrasonic Vibration-Assisted Abrasive Waterjet Micromachining the Quartz Glass

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Rongguo Hou ◽  
Tao Wang ◽  
Zhe Lv ◽  
Yuanyong Liu
Keyword(s):  
Ultrasonic Vibration ◽  
Vibration Amplitude ◽  
Material Removal ◽  
Experimental Results ◽  
Machining Process ◽  
Abrasive Waterjet ◽  
Influence Of Process Parameters ◽  
Erosion Depth ◽  
System Pressure

The ultrasonic vibration is used to enhance the capability of the abrasive water micromachining glass. And, the ultrasonic vibration is activated on the abrasive waterjet nozzle. The quality of the flow is improved, and the velocity of the abrasive is increased because of the addition of the ultrasonic energy. The relevant experimental results indicate that the erosion depth and the material volume removal of the glass are obviously increased when ultrasonic vibration is working. As for the influence of process parameters on the material removal of the glass such as vibration amplitude, system pressure, distance of the standoff, and abrasive size, the experimental results indicate that the system pressure and vibration contribute greatly to the glass material removal. Also, the erosion depth and the volume of material removal are increased with the increase in the vibration amplitude and system pressure. There are some uplifts found at the edge of erosion pit. Then, it can be inferred that the plastic method is an important material removal method during the machining process of ultrasonic vibration-assisted abrasive waterjet.

scholarly journals STUDY OF QUALITY OF NINE ALUMINIUM ALLOYS SURFACES CREATED USING ABRASIVE WATERJET

2016 ◽  
Vol 2016 (01) ◽  
pp. 892-895
Author(s):  
Dagmar Klichova ◽  
Jiri Klich ◽  
Lucie Gurkova
Keyword(s):  
Aluminium Alloys ◽  
Abrasive Waterjet

scholarly journals EXPERIMENTAL ANALYSIS OF THE INFLUENCE OF FEED RATE ON QUALITY OF CUTS PERFORMED BY AWJ

2016 ◽  
Vol 21 (1) ◽  
Author(s):  
CRINA RADU ◽  
EUGEN HERGHELEGIU ◽  
CAROL SCHNAKOVSZKY ◽  
CATALIN TAMPU
Keyword(s):  
Experimental Analysis ◽  
Feed Rate ◽  
Water Jet ◽  
Abrasive Waterjet ◽  
Tube Size ◽  
Awj Cutting ◽  
Orifice Size

Abrasive waterjet (AWJ) cutting technology is one of the most recent developed non-traditional processes used in industry for the processing of difficult-to-cut materials which usually lead to a pronounced wear of conventional tools and generation of damaged surfaces. The efficiency and the quality of AWJ depend on many parameters, some of them precisely controllable (e.g. water jet pressure, feed rate) while others uncontrollable (e.g. focusing tube size, waterjet orifice size). The aim of current study was to analyze the influence of feed rate at low working pressures on the quality of cuts, quantified by the parameters specified in the ISO/WD/TC44 N 1770 standard.

Physical and Geometrical Quality of X2CrNi18-9 Stainless Steel Surfaces Cut with Abrasive Waterjet - Work Hardening of Marginal Layer

2015 ◽  
Vol 1111 ◽  
pp. 7-12
Author(s):  
Ion Aurel Perianu ◽  
Ion Mitelea ◽  
Viorel Aurel Şerban
Keyword(s):  
Stainless Steel ◽  
Work Hardening ◽  
Water Pressure ◽  
Optical Microscope ◽  
Abrasive Waterjet ◽  
Technological Parameters ◽  
Geometrical Quality ◽  
Inner Diameter ◽  
Steel Surfaces

This study presents investigations regarding processing X2CrNi18-9 stainless steel sheet with 2 mm thickness using abrasive waterjet cutting.By variation of base technological parameters (water pressure, travelling speed, abrasive rate and focusing tube inner diameter) the shape together with size of the kerf were analyzed.Roughness measurements from the entrance to exit of cut surfaces in correlation with the analysis carried out using an optical microscope highlights work hardening of the marginal layer. This phenomenon is less accentuated in the higher area which is in the vicinity of the focusing tube and intensifies towards the lower area of cut material.

The Influence of the Technical Parameters on the Quality of Engineering Ceramics by Abrasive Waterjet

2013 ◽  
Vol 416-417 ◽  
pp. 1689-1692
Author(s):  
Feng Lian Zhang ◽  
Jing Zhu
Keyword(s):  
High Temperature ◽  
High Hardness ◽  
Abrasive Waterjet ◽  
Engineering Ceramics ◽  
Wear Resistant ◽  
Technical Parameters ◽  
Machining Quality ◽  
Conventional Machining

Engineering Ceramics is a inorganic nonmetal material, which is sintered at high-temperature. ceramics have promising potential as high-temperature strength.erosion-resistant, wear-resistant and hot impact-resistant.However, because they have high hardness and brittleness as well as nonconductive, it is very difficult to machine them using conventional machining. Their use-area is restricted. At presently, the machining technology of Engineering Ceramics by abrasive waterjet become more and more important for humankind. In this paper, the influence of technical parameters on machining quality has been studied and analyzed. A better changing method of technical parameters is given.

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