Which is not advantages of abrasive jet machine?
The abrasive powder cannot be reused because its cutting ability decrease and it may clog on orifice of the nozzle. Higher chance of stray cutting. Tapering may occur during drilling. AJM not suited for machining of soft material because the abrasive may get embedded in the work material.
What is the fundamental principle of abrasive jet machining?
The fundamental principle of Abrasive jet machining involves the use of a high-speed stream of abrasive particles carried by a high-pressure gas or air on the work surface through a nozzle. The metal is removed due to erosion caused by the abrasive particles impacting the work surface at high speed.
What are the important applications of AJM?
Applications of AJM: The process is best suited for machining brittle and heat sensitive materials like glass, quartz, sapphire, ceramics, etc. It is used for drilling holes, cutting slots, cleaning hard substance deburring, polishing, etc. It is used for producing high quality surface.
What are the advantages and application area of AJM?
The main advantages are its flexibility, low heat production, and ability to machine hard and brittle materials. Its flexibility owes from its ability to use hoses to transport the gas and abrasive to any part of the workpiece. Normally inaccessible portion can be machined with good accuracy.
What are the disadvantages of Abrasive jet machining?
The disadvantages of Abrasive Jet Machining are:
- The material removal rate is low.
- Poor machining accuracy.
- High nozzle wear rate.
- The soft material cannot be machined.
- Additional cleaning of the work surface is required due to the sticking of abrasive grains in softer material.
What are advantages and disadvantages of Abrasive jet machining?
No thermal damage of workpiece—Unlike conventional machining or thermal energy based non-traditional machining processes, AJM produce no palpable heat during machining. This protects the workpiece from thermal damage. It also facilitates machining of heat sensitive materials without having much problem.
What are the limitations of AJM?
AJM Disadvantages: The removal rate of materials is low. The tapering of hole mainly with more depth is unavoidable. A dust collecting chamber is a basic need to avoid atmospheric pollution that causes health problems.
What are the advantages and disadvantages of using abrasive?
Advantages & disadvantages of wet abrasive blasting methods
| Advantages | Disadvantages | |
|---|---|---|
| Vapour abrasive blasters | High cleaning rates Reduce dust Low water consumption Low abrasive consumption Fine air pressure & abrasive control Appropriate for different applications | Higher purchase cost |
What are the limitations of NTM process?
The main limitations of this process are: • This process can only be employed in electrically conductive materials; • Material removal rate is low and the process overall is slow compared to conventional machining processes; • Unwanted erosion and over cutting of material can occur; • Rough surface finish when at high …
What are advantages and disadvantages of abrasive jet machining?
What are the limitations of conventional manufacturing process?
Disadvantages / Limitation of conventional machining process:
- Less surface finish.
- They can’t machined complex shapes.
- More tool wear.
- Lower dimensional accuracy.
- Noisy operation causes sound pollution.
What is abrasive jet machining?
In Abrasive jet machining abrasive particles are made to impinge on work material at high velocity. Jet of abrasive particles is carried by carrier gas or air. The high velocity stream of abrasives is generated by converting pressure energy of carrier gas or air to its Kinetic energy and hence high velocity jet.
What is the abrasive particle size and jet velocity?
In this machining, the Abrasive particle size is 10-40 Micros. Jet velocity will be 150 to 300 m/sec and It is used for superalloys and Hard Materials. Let’s dive into it.
What is the diameter of the nozzle of abrasive jet machining?
The diameter of the nozzle is about 0.18 to 0.8 mm. The figure shown is the above Abrasive jet Machining. It consists of a mixing chamber, gas filter, pressure gauge, regulator, and the nozzle. The filtered gas at a pressure of 2 to 8 kgf/cm 2 is supplied to the mixing chamber containing the abrasive powder and
What is the jet velocity of jet machining?
Jet velocity will be 150 to 300 m/sec and It is used for superalloys and Hard Materials. Let’s dive into it. Abrasive jet machining is the process of impinging the high-speed stream of abrasive particles by high-pressure gas or air on the work surface through a nozzle and metal removal occurs due to erosion caused by high-speed abrasive particles.