What are the disadvantages of water jet cutting machine?
Cutting Time – While the waterjet cutter can cut most of the same materials, very often the cutting takes longer than a traditional cutter. More time cutting means less output. Orifice Failure – Low quality waterjet orifices have a tendency to break down and disrupt cutting, resulting in lost time and productivity.
Which one is not an advantage of water jet machining?
4. Which of the following is not an advantage of Water jet machining? Explanation: Costs per hour are relatively high in Water jet machining. 5.
What are the advantages of water jet machining?
Five benefits of waterjet cutting
- No material limitations. Waterjet cutting is versatile applicable, cutting nearly any material; composites, plastics, metals, glass, stone or rock, ceramics, and rubber.
- No Heat Affected Zone (HAZ)
- No material distortion.
- No additional finishing process.
- No hazardous waste.
What are some safety issues regarding water jet cutting?
Common hazards and risks include the water jet piercing the skin, being hit by flying debris and exposure to noise. Other hazards associated with high pressure water jetting include working in confined spaces, fall hazards, respiratory and eye hazards, electric shock and potential exposure to hazardous chemicals.
What are the advantages and disadvantages AWJM?
Advantages and Disadvantages: It is environment friendly because it does not form any dust particle and used water as cutting fluid. Good surface finish. No physical tool is require. It can cut both soft and hard material.
Which of the following does not damage the nozzle used in water jet machining?
Which of the following does not damage the nozzle used in Water jet machining? Explanation: Only dirt particles and mineral deposits are responsible for damage of nozzle. 12. What are the uses of catcher in machining system of Water jet machining?
Which of the following gases is not used in abrasive jet machining?
8. Which of the following gas, should never be used as the carrier of abrasives? Explanation: Oxygen should not be used as carrier because it causes a violent chemical reaction with abrasives or work piece. 9.
What are the advantages and disadvantages of ultrasonic machining?
Advantages and disadvantages of ultrasonic machining process
- This type of process produce less heat.
- You can do the machining of hard as well as brittle material in it.
- It can be used for non-circular holes drilling just like in glass.
- This may be use for hard materials threading.
Can a water jet cut your finger?
Other Hazards Some waterjet hazards are common to many other industrial machines. Pumps for waterjet cutting range in power from 20 to 100 HP. The most common waterjet pinch accidents occur during setup operations, when fingers can get pinched between the nozzle and the slats or the material and the slats.
What pressure is high pressure water jetting?
between 10,000 to 25,000 psi
High-pressure water jetting can be just pure water or water with abrasives, cleaning chemicals or other additives at an operating pressure of between 10,000 to 25,000 psi (70 to 170 MPa) from a system that includes an engine, pump, water storage tank hose, specialized nozzle and other accessories.
What are the advantage and disadvantages of abrasive jet machine?
The process is free from chatter and vibration as there is no contact between the tool (nozzle) and work material. Do not cause hardening of workpiece material. Very little or no heat generation during the cutting process, so it is suited for machining of heat sensitive material.
What are the disadvantages of a waterjet cutting machine?
Disadvantages of Waterjet Cutting Cutting Time – While the waterjet cutter can cut most of the same materials, very often the cutting takes longer than a traditional cutter. More time cutting means less output.
How does the water jet machining process work?
The abrasive particles combine with the waterjet stream to create the high energy abrasivejet cutting stream. This stream exits the cutting head at a velocity of up to 3,000 feet per second. Today’s waterjet cutting machines are CNC controlled for accuracy, repeatability and ease of setup
How much does waterjet cutting cost per lb?
There is an additional price if you require the abrasive compound, this can typically range between $0.20-$0.35 per lb and can be used at a rate up to $35.00/hr depending on the power of the pump and amount of time you spent cutting.
Why is water jet cutting important to the environment?
The environmental credentials of water jet cutting also mean that it is likely to grow in importance as a cutting technology, with the use of technologies that create needless waste becoming increasingly unacceptable as countries struggle with green commitments.