What are non traditional machining process?
Casting, forming, powder metallurgy are such processes to name a few. Similarly, Abrasive Jet Machining (AJM), Ultrasonic Machining (USM), Water Jet and Abrasive Water Jet Machining (WJM and AWJM), Electro- discharge Machining (EDM) are some of the Non Traditional Machining (NTM) Processes.
What is traditional and non traditional machining process?
The traditional machining processes rely on harder tool or abrasive material to remove the softer material whereas non-traditional machining processes such as EDM uses electrical spark or thermal energy to erode unwanted material in order to create desired shape.
What do you understand by the term unconventional or non traditional machining methods what is their importance?
Definition Unconventional Machining Process is defined as a group of processes that remove excess (stock) material from work piece by various techniques involving Mechanical, Thermal, Electrical and chemical energy or combination of these energies but do not use a sharp cutting tools as it needs to be used for …
What are the characteristics of unconventional machining process?
Very high hardness and strength of the material. The work piece: too flexible or slender to support the cutting or grinding forces. The shape of the part is complex, such as internal and external profiles, or small diameter holes. Surface finish or tolerance better than those obtainable conventional process.
What is AJM process?
Abrasive jet machining (AJM), also known as abrasive micro-blasting, pencil blasting and micro-abrasive blasting, is an abrasive blasting machining process that uses abrasives propelled by a high velocity gas to erode material from the workpiece.
What are the process parameters affecting the MRR in AJM?
Process Parameters of Abrasive Jet machining (AJM) are factors that influence its Metal Removal Rate (MRR)….The following are some of the important process parameters of abrasive jet machining:
- Abrasive mass flow rate.
- Nozzle tip distance.
- Gas Pressure.
- Velocity of abrasive particles.
- Mixing ratio.
- Abrasive grain size.
What is the function of nozzle in AJM process?
A nozzle is used to convert this pressure energy into kinetic energy and also to direct the jet towards work surface at a particular angle (impingement angle). Upon impact, hard abrasive particles gradually remove material by erosion and sometime assisted by brittle fracture.
Which of the following process has highest rate of metal removal?
Electro-Chemical Machining
What is the material of nozzle used in AJM?
tungsten carbide
How many types of mask materials can be used during AJM?
Three groups
What is the mechanism of material removal in AJM?
In AJM, what is the mechanism of removal of material from the work piece? Explanation: In Abrasive jet machining, the removal of material takes places by mechanical abrasion, using abrasive grains.
What is the full form of WJM in advanced machining processes?
Explanation: The full form of WJM is water jet machining in advanced machining processes.
What is the full form of WJM?
| WJM | Western Journal of Medicine Miscellaneous » Journals — and more… | Rate it: |
|---|---|---|
| WJM | We’re Just Mean Sports — and more… | Rate it: |
| WJM | William Jonathan Mayo Community » Famous & Celebs | Rate it: |
| WJM | Washington Junior Miss Community | Rate it: |
| WJM | Women, Juniors, and Masters Sports | Rate it: |
What is the full form of AWJM?
Explanation: Full form of AWJM is Abrasive Water Jet Machining. Explanation: Hard to cut materials, which are mentioned above, can be machined using Abrasive water jet machining.
What is WJM principle component?
Construction of Water Jet Machining (WJM): The apparatus of water jet machining consists of the following components: Reservoir: It is used for storing water that is to be used in the machining operation. Pump: It pumps the water from the reservoir. Intensifier: It is connected to the pump.
What are the applications of WJM?
WJM process has many applications in different area of surface engineering such as cleaning of unwanted coating for surface preparation, cleaning of food utensils, cleaning of rust and residues, polishing, decorative finishing and surface texturing on both metals and non-metals, etc.
What is the principle of water jet machining?
The basic principle of water-jet cutting To generate the required high-pressure water jet, a high-pressure pump brings the water to a pressure of up to several thousand bar and directs it to the cutting head. Depending on the material to be cut, the water can also be mixed with an abrasive.
Which type of carrier medium is used in AJM?
Explanation: In AJM, gases like CO2, air or nitrogen are used to carry the abrasives.
When the static pressure of the feed is increases what happens to MRR?
Explanation: As static feed pressure increases, MRR increases up to a limiting condition and then no further increase takes place.
Which gas is used in abrasive jet machining?
In abrasive jet machining jet is produced by mixing the gas with abrasive particles. The gas used is called as carrier gas. Some of the most common carrier gases employed are air, carbon dioxide nitrogen. Oxygen is never used as a carrier gas as it may oxidize the surface of the work piece.
Which of the following is commonly used as a carrier gas in AJM?
3. Which of the following is commonly used as a carrier gas in AJMM? Explanation: In AJMM, commonly used gases are CO2, nitrogen, and air. Air is mostly preferred due to universal availability, practically at no cost, and its non-toxic nature.
What are the other applications where magnetic abrasive finishing can be used?
Magnetic field-assisted finishing (MAF) processes have been developed for a wide variety of applications including the manufacturing of medical components, fluid systems, optics, dies and molds, electronic components, microelectromechanical systems, and mechanical components.
Which of the following is the type of non traditional machining?
Explanation: Electrochemical process, chemical machining and mechanical energy process are all the types of nontraditional machining. Apart from these, photochemical, chemical milling, ultrasonic machining, laser beam machining etc.
Which type of materials Cannot be machined using AJM?
Explanation: Soft materials such as candy bars, thin softwood etc.., cannot be machined using AJM.
What are the operating principles of AJM?
AJM uses a stream of fine grained abrasives (of size 10 to 40 microns) mixed with air or some other carriers gas at high pressure. This stream is directed on the work surface by using a suitable nozzle. The velocity of carries gas or air is up to 200 to 400 m/sec.
How many indexing methods are there for cutting a gear?
9. How many indexing methods are there for cutting a gear? 1) Direct indexing 2) Simple indexing 3) Compound indexing 4) Differential indexing.
What are the values of voltages used in ECM?
Explanation: High current densities, which range between 0.5 – 5 A/mm2 are used in ECM. 2. What are the values of voltages used in ECM? Explanation: Low voltages, ranging between 10 to 30 V are used in Electrochemical machining.
Which of the following comes under main components of ECM?
1. Which of the following come under the main components of ECM? Explanation: The main components of Electro chemical machining include feed control system, electrolyte supply system, power supply unit, work piece holding devices.
Which of the following is correct about ECM?
Which of the following is correct about ECM? Explanation: In ECM, erosion of metal takes place as reverse process of electroplating.
What is ECM process?
Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. It is normally used for mass production and is used for working extremely hard materials or materials that are difficult to machine using conventional methods. Its use is limited to electrically conductive materials.