How do you calculate machinability index?

In order to find the machinability index, factors like tool material, tool geometry, tool life and other cutting conditions are fixed except the speed. Then find the speed at which tool cut the material for a pre-determined tool life. Then it is compared with a standard material.

How many PSI is a water jet cutter?

Typical waterjet cutting pressure is between 50,000 and 60,000 PSI. Many newer systems are pressurized up to 90,000 PSI. The water at this pressure is then released through a small orifice machined into a diamond or saphire, usually in the range of 5 to 15 thousandths of an inch diameter.

How fast is water jet machining?

Computer-controlled waterjet and abrasivejet cutting are used today in industry to cut many soft and hard materials. The plain water-abrasive mixture leaves the nozzle at more than 900 mph. The latest machines can cut to within two thousandths of an inch, and have jet speeds around Mach 3.

How much does a water jet CNC machine cost?

CNC waterjet machines require an expensive Ultra High Pressure Intensifier pump, so they are going to range from at least $100,000 to as much as $350,000, depending on size and options. Finally, CNC laser machines are usually the most costly.

What is the hardest material to machine?

What is the hardest material to machine?

• Tungsten has the highest tensile strength of any natural metal, but it’s brittle and tends to shatter on impact.
• Titanium has a tensile strength of 63,000 PSI.
• Chromium, on the Mohs scale for hardness, is the hardest metal around.

What is the easiest metal to machine?

Brass, known for its stability and low strength, is one of the easiest and most cost-efficient materials to machine. This type of machining is used across a wide variety of applications and industries. some of which include medical, consumer goods, and electrical.

Is there anything a waterjet can’t cut?

Semi-liquid materials: A water jet cannot cut through anything liquid or even semi-liquid, such as sand or cement slurry. The materials will simply blend back together after the water jet passes through because the liquid content is so high. Iron: Iron is too brittle for a water jet to cut an accurate profile.

Can a pressure washer cut your finger off?

However, on the slight chance that you are not using proper technique, or maybe you just have an accident, you need to be aware that pressure washers do have the ability to severely lacerate your finger and even cut it off. While most injuries are not this severe, this can absolutely happen to anyone.

Can a waterjet cut a diamond?

Since diamond is the hardest material in the world, only the waterjet machine can cut it.” The OMAX 2626 is a high-precision waterjet machine often found in research labs, tech prototyping, and even aerospace facilities.

How precise is a waterjet?

Accuracy. Flow waterjets can make parts to very tight tolerances, some systems can create parts with a tolerance as close as 0.001″ (0.025 mm). For waterjet cutting, typical part tolerances range from between 0.003″ and 0.005″ of an inch.

Is waterjet cutting expensive?

Waterjet cutting machines are expensive to purchase, operate, and maintain. When you request to use a waterjet you are going to have to pay for more than just time occupying and utilizing the machine.

What metal is easiest to machine?

How big is the nozzle and orifice of waterjet?

Orifice selection – The scientific way Orifice Diameter (inch) Pressure (psi) x 1000 Pressure (psi) x 1000 Pressure (psi) x 1000 Pressure (psi) x 1000 20 25 30 35 0.003 0.03 0.03 0.03 0.04 0.004 0.05 0.05 0.06 0.06 0.005 0.07 0.08 0.09 0.1

What does a 100% machinability rating mean?

The metal with a machinability rating smaller than 100% means it is more difficult to machine than B-1112 (carbon steel 1212) and materials with a rating larger than 100% indicates it’s easier to be machined. Here are some tables list the machinability of a wide range of metals.

Which is the best definition of the term machinability?

What is Machinability? Machinability can be defined as the ease of machining of materials, or the ease with which a metal can be cut, depending on the physical properties and cutting conditions of the material. The materials with higher machinability requires less power to cut, can be processed more quickly, and easier to get a good finish.

What’s the difference between waterjet Q5 and Q1?

For example, 4” thick Aluminum Q5 would be 0.72 ipm (18 mm/min) and Q1 would be 4.2 ipm (107 mm/min), 5.8 times faster. Every waterjet company will be able to supply a chart similar to the following showing the horsepower, maximum pressure and maximum water output for the pumps offered with their systems.