What is the primary distinguishing feature between water jet cutting and abrasive water jet cutting?

What is the primary distinguishing feature between water jet cutting and abrasive water jet cutting?

The primary difference between pure and abrasive waterjet cutting is whether additives are mixed into the pressurized water that streams from the machine nozzle. In pure waterjets, the pressure of the water alone, when forced through a tiny orifice, is used to cut through materials like foam (and even food).

When was abrasive water jet machining developed?

Explanation: Abrasive water jet machining was first developed in the year 1974.

What are the main advantages of abrasive water jet machining AWJM )?

Abrasive waterjet machining (AWJM) is a new machining process, the advantages of which include low cutting temperatures, no heat damage to the material being cut, minimal dust, and low cutting forces.

What are the values of jet velocity in water jet machining?

What are the values of jet velocities in Water jet machining? Explanation: Velocity of the water jet stream ranges between 540 – 1480 m/s in WJM.

Which of the following is not an advantage of water jet machining?

Which of the following is not an advantage of Water jet machining? Explanation: Costs per hour are relatively high in Water jet machining. 5. In Water jet machining, tool need not require sharpening once the machining is done.

What are the processes where abrasive jet machining can be used?

Explanation: Abrasive jet machining can be used for cutting, drilling, deburring and cleaning processes.

What are the characteristics of abrasive jet machining?

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.

Which material can be machined using abrasive jet machining?

Explanation: Materials like ceramics, glass, hard and super hard materials can be machined using Abrasive jet machining.

What are the components of abrasive jet machining AJM )?

AJM set-up comprises air compressor fitted with drier and cleaner, abrasive feeder and vibratory mixing chamber, nozzle, well ventilated machining chamber and various gauges for detecting pressure, flow rate, etc. A schematic diagram of such set-up is shown below.

What are the abrasive used in AJM?

) Silicon carbide (SiC) Glass beads, crushed glass and sodium bicarbonate are some of abrasives used in AJM. Selection of abrasives depends on MRR , type of work material , machining accuracy.

Which of the following is NOT process parameter of abrasive jet machining?

Which of the following is not a process parameter of Abrasive water jet machining? Explanation: Frequency of the vibrations does not belong to the parameters of Abrasive water jet machining.