WATER JET MACHINING.

Slides:

Advertisements

Similar presentations

Heat Exchanger Design Thermal / Fluid System Design Final Project Department of Mechanical Engineering Fall 2005 December 13, 2005 Team Members: Andrew.

Advertisements

Machine Tools And Devices For Special Technologies Electrochemical machining Slovak University of Technology Faculty of Material Science and Technology.

Abrasive Jet Machining (AJM)

MFET  1. Basic Principles  2. Hardware  3. Abrasives  4. Parameters  5. Capabilities  6. Advantages  7. Disadvantages.

Service Delivery 3 Hydraulics. Aim To ensure students can explain the principles of obtaining and delivering water.

HYDRAULICS (670441) Philadelphia University Faculty of Engineering

Chapter 21 THEORY OF METAL MACHINING

Electron Beam Machining Ultrasonic Machining Abrasive Water Jet Machining PRESENTATION Submitted to: Mr Deepak Sharma Submitted by: Mayank Gupta ME-1 3.

Mechanical Methods of Material Removal

Chapter 7IT 2081 Thermal and Other Methods of Material Removal Chapter 7.

Machining is processes in which we get a desired final shape and size from of raw material. 1.Conventional / Traditional Machining 2.Non Conventional.

Chapter 20 Fundamentals of Machining/Orthogonal Machining (Part I Review) EIN 3390 Manufacturing Processes Spring,

Muhajir Ab. Rahim School of Mechatronic Engineering

Nontraditional Machining Processes

Abrasive Water Jet Machining (AWJM)

ABRASIVE JET MACHINE.

 It is the material removal process where the material is removed by high velocity stream of air/gas or water and abrasive mixture.  An abrasive is.

Airbrasive Jet Machining

1 Water Jet Machining. 2  Key element in WJM – a jet of water.  Water jet travels at velocities as high as 900 m/s (approximately Mach 3).  When the.

IE 243 MANUFACTURING PROCESSES

Electrochemical Machining (ECM)

Chapter 20 Fundamentals of Machining/Orthogonal Machining (Part I Review) EIN 3390 Manufacturing Processes Fall, 2010.

Non-traditional Machining Processes Manufacturing processes can be broadly divided into two groups: a)primary manufacturing processes : Provide basic shape.

Chapter 20 Fundamentals of Machining/Orthogonal Machining (Part I) EIN 3390 Manufacturing Processes Spring,

1 Teaching Innovation - Entrepreneurial - Global The Centre for Technology enabled Teaching & Learning, N Y S S, India DTEL DTEL (Department for Technology.

SUBMITTED BY AVINASH SNEHI ( ) ME-1 3rd YEAR

Abrasive Jet Machining ( AJM ) Fig : Schematic illustration of Abrasive Jet Machining 1. AJM is a metal removal by mechanical erosion caused by the use.

Machining: Family of Material Removal Processes  Material is removed from a starting work part to create a desired geometry.

Factors Affecting Tool Life In Machining Processes

ENM208 INTRODUCTION to MACHINING ANADOLU UNİVERSITY Industrial Engineering Department.

Abrasive Machining General Manufacturing Processes Engr Instructor - Sam Chiappone.

C.U. Shah College of Engg. & Tech

Lecture # 7 THEORY OF METAL MACHINING 1.Overview of Machining Technology 2.Theory of Chip Formation in Metal Machining 3.Force Relationships and the Merchant.

1 Electrochemical Machining (ECM). 2 Electrochemical Machining Uses an electrolyte and electrical current to ionize and remove metal atoms Can machine.

Team members: Mohamad Faisal b. Mohamad Khairi Harith Fahmi b. Mazlan Mohd Amirul Asraf b. Abu Bakar Mohd Asraf b. Arbain Asraf b. Arsyad Mohd Hafiz b.

DESIGN AND DEVELOPMENT OF GRINDING ATTACHMENT ON LATHE MACHINE

Machining: Family of Material Removal Processes

ELECTRICAL ENERGY BASED PROCESSES

ULTRASONIC MACHINING PROCESS Prepared by B.BALAMURALI AP/MECH

GOVERNMENT ENGINEERING COLLEGE DAHOD

Non-traditional Machining Processes

ABRASIVE WATER JET MACHNINING

SNS COLLEGE OF ENGINEERING, COIMBATORE

SNS COLLEGE OF ENGINEERING, COIMBATORE

WATER JET MACHINING Prepared by B.BALAMURALI AP/MECH

Subject Name: Manufacturing Process

Abrasive Water jet Machining

S.T.B.S. COLLEGE OF DIPLOMA ENGG,SURAT

INDUSTRIAL HYDRAULICS

Unconventional Machining Processes

Chemical and Electro-Chemical Energy Based Processes

MECHANICS OF METAL CUTTING

ABRASIVE JET MACHINING AND STUDY OF PROCESS PARAMETERS

Processes used to form metallic materials

ABRASIVE JET MACHINING Prepared by B.BALAMURALI AP/MECH

PRESENTATION ON ABRASIVE WATER JET MACHINING

Applied Thermal Engineering

Basic principles of broaching

Electron-Beam Machining

UNCONVENTIONAL MACHINING PROCESSES

WEEK 8 Water Jet Machining & Abrasive Water Jet Machining

Design and Development of Abrasive Jet Machine And

SHAPING PROCESSES FOR PLASTICS

Machining: Family of Material Removal Processes

 Overview of Machining Technology  Theory of Chip Formation in Metal Machining  Force Relationships and the Merchant Equation  Power and Energy Relationships.

Waterjet & Abrasive Waterjet

Unconventional Machining

Prepared by: Shayfull Zamree Abd Rahim

Primary Machining Parameters

Presentation transcript:

WATER JET MACHINING

WATER JET MACHINING Water Jet Machining (WJM) is a mechanical energy based non-traditional machining process used to cut and machine soft and non-metallic materials. It involves the use of high velocity water jet to smoothly cut a soft workpiece. It is similar to Abrasive Jet Machining (AJM). In water jet machining, high velocity water jet is allowed to strike a given workpiece. During this process, its kinetic energy is converted to pressure energy. This induces a stress on the workpiece. When this induced stress is high enough, unwanted particles of the workpiece are automatically removed.

Construction of Water Jet Machining (WJM):

WATER JET MACHINING Water from the reservoir is pumped to the intensifier using a hydraulic pump. The intensifier increases the pressure of the water to the required level. Usually, the water is pressurized to 200 to 400 MPa. Pressurized water is then sent to the accumulator. The accumulator temporarily stores the pressurized water. Pressurized water then enters the nozzle by passing through the control valve and flow regulator. Control valve controls the direction of water and limits the pressure of water under permissible limits. Flow regulator regulates and controls the flow rate of water. Pressurized water finally enters the nozzle. Here, it expands with a tremendous increase in its kinetic energy. High velocity water jet is produced by the nozzle. When this water jet strikes the workpiece, stresses are induced. These stresses are used to remove material from the workpiece.

FACTORS AFFECTING WJM PERFOMANCE Material Removal Rate Surface quality accuracy JET CUTTING RATE Workpiece #type #thickness #Feed rate JET NOZZLE #Diameter #S.O.D JET FLUID: #Type, #velocity, #flowrate, #pressure, #viscosity

Typical WJM cutting ratio for various materials Thickness (mm) Feed rate (m/min) leather 2.2 20 vinyl chloride 3.0 0.5 Polyester 2.0 150 Graphite 2.3 05 Plywood 6 01

PERFORMANCE OF WJM AND AWJM PROCESS Process Parameters HYDRAULIC WORKPIECE ABRASIVE size composition Orifice rate Flow rate PERFORMANCE OF WJM AND AWJM PROCESS hardness pressure materials Inlet angle Transverse speed Angle of attack Bore dia. Tube length S.O.D MIXING CUTTING

MATERIAL REMOVAL RATE MRR α m α v MRR depends on the reactive force F of the jet. Reactive force= Mass flow rate (m)X jet velocity (v) Hence, MRR α m α v Depends on fluid pressure Depends on fluid pressure (p) and nozzle diameter (d)

ADVANTAGES OF WJM Water jet machining is a relatively fast process. It prevents the formation of heat affected zones on the workpiece. It automatically cleans the surface of the workpiece. WJM has excellent precision. Tolerances of the order of ±0.005″ can be obtained. It does not produce any hazardous gas.It is eco-friendly.

LIMITATIONS OF WJM Only soft materials can be machined. Very thick materials cannot be easily machined. Initial investment is high. Higher cutting speeds are frequently used for rough cutting purposes which degrades the surface finish.

Applications VERSATILE. Water jet machining is used to cut thin non-metallic sheets. It is used to cut rubber, wood, ceramics and many other soft materials. It is used for machining circuit boards.It is used in food industry. VERSATILE.