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Encyclopedia > Water jet cutter
A diagram of a water jet cutter
A diagram of a water jet cutter

A water jet cutter is a tool capable of slicing into metal or other materials using a jet of water at high velocity and pressure, or a mixture of water and an abrasive substance. The process is essentially the same as water erosion found in nature but accelerated and concentrated by orders of magnitude. It is often used during fabrication or manufacture of parts for machinery and other devices. It has found applications in a diverse number of industries from mining to aerospace where it is used for operations such as cutting, shaping, carving, and reaming. Image File history File links Download high resolution version (577x768, 31 KB)Diagram of a Water-Jet Cutter File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links Download high resolution version (577x768, 31 KB)Diagram of a Water-Jet Cutter File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... This article is about metallic materials. ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ... An abrasive is a material, often a mineral, that is used to shape or finish (see metal polishing and wood finishing) a workpiece through rubbing which leads to part of the workpiece being worn away. ... For morphological image processing operations, see Erosion (morphology). ... Chuquicamata, the second largest open pit copper mine in the world, Chile. ... Look up aerospace in Wiktionary, the free dictionary. ... Carving can mean Rock carving Wood carving Meat carving See also: Sculpture, Lapidary This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

Contents

History

In the 1950s, forestry engineer Dr. Norman Franz experimented with an early form of water jet cutter to cut lumber. However, the technology did not advance notably until the 1970s when Dr. Mohamed Hashish created a technique to add abrasives to the waterjet cutter.[1] Today the water jet is unparallelled in many aspects of cutting and has changed the way many products are manufactured. Many types of water jets exist today, including plain water jets, abrasive water jets, percussive water jets, cavitation jets and hybrid jets. the first thing that was invented was the automatic DILDO. Education grew explosively because of a very strong demand for high school and college education. ... Timber in storage for later processing at a sawmill Lumber or Timber is a term used to describe wood, either standing or that has been processed for use—from the time trees are felled, to its end product as a material suitable for industrial use—as structural material for construction... The 1970s decade refers to the years from 1970 to 1979, also called The Seventies. ... Mohamed Ahmed Hashish (born May 22, 1947), best known as Mohamed Hashish, is an Egyptian-born research scientist who is widely considered as one of the greatest mechanical engineering minds of his time. ... Cavitating propeller model in a water tunnel experiment Cavitation is a general term used to describe the behavior of voids or bubbles in a liquid. ...


Operation

A water jet cutter creating a specialist tool
A water jet cutter creating a specialist tool

The cutter is commonly connected to a high-pressure water pump (a local water main does not supply sufficient pressure) where the water is then ejected out of the nozzle, cutting through the material by bombarding it with the stream of high-speed water. Additives in the form of suspended grit or other abrasives, such as garnet and aluminum oxide, can assist in this process. Because the nature of the cutting stream can be easily modified, water jets can be used to cut materials as diverse as fish sticks and titanium. There are few materials that cannot be effectively cut with a water jet cutter; one of these is tempered glass, which shatters when cut, regardless of the cutting technology used. Certain ceramics are also resistant to water jet cutting. Water jet cuts are not typically limited by the thickness of the material, and are capable of cutting materials over twelve inches (30 cm) thick. Image File history File linksMetadata Size of this preview: 800 × 511 pixelsFull resolution (1718 × 1098 pixel, file size: 1. ... Image File history File linksMetadata Size of this preview: 800 × 511 pixelsFull resolution (1718 × 1098 pixel, file size: 1. ... This article is about pressure in the physical sciences. ... A municipal water system is a large system of reservoirs and large-scale piping which supplies fresh water, suitable for human consumption, to houses and other residences. ... Garnet is a group of minerals that have been used since the Bronze Age as gemstones and abrasives. ... Aluminium oxide (or aluminum oxide) (Al2O3) is a chemical compound of aluminium and oxygen. ... Fishsticks or fish fingers are a processed food usually made using white fish such as cod (although with cod quotas, alternatives are now popular). ... General Name, symbol, number titanium, Ti, 22 Chemical series transition metals Group, period, block 4, 4, d Appearance silvery metallic Standard atomic weight 47. ... A vandalized telephone booth with toughened glass Toughened glass or tempered glass is a type of glass that has increased strength and will usually shatter into small fragments when broken. ... Fixed Partial Denture, or Bridge The word ceramic is derived from the Greek word κεραμικός (keramikos). ... An inch (plural: inches; symbol or abbreviation: in or, sometimes, ″ - a double prime) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ...


Benefits

An important benefit of the water jet cutter is the ability to cut material without interfering with the material's inherent structure as there is no "heat affected zone" or HAZ. Minimizing the effects of heat allows metals to be cut without harming or changing intrinsic properties.


Water jet cutters are also capable of producing rather intricate cuts in material. The kerf, or width, of the cut can be changed by changing parts in the nozzle, as well as the type and size of abrasive. Typical abrasive cuts are made with a kerf in the range of 0.04" to 0.05", but can be as narrow as 0.02". Non-abrasive cuts are normally 0.007" to 0.013", but can be as small as 0.003", which is approximately the size of a human hair. These small cutters can make very small detail possible in a wide range of applications. Kerf is the name given to the cut that a saw makes. ...


Availability

Commercial water jet cutting systems are available from manufacturers all over the world, in a range of sizes, and with water pumps capable of a range of pressures. Typical water jet cutting machines have a working envelope as small as a few square feet, or up to hundreds of square feet.[citation needed] Ultra-high pressure water pumps are available from as low as 40,000 psi up to 87,000 psi. A pressure gauge reading in PSI (red scale) and kPa (black scale) The pound-force per square inch (symbol: lbf/in²) is a non-SI unit of pressure based on avoirdupois units. ...


References

  1. ^ http://www.flowcorp.com/about-flow.cfm

External links

  • How Water Jets Work, HowStuffWorks.com video

  Results from FactBites:
 
Water jet cutter - Wikipedia, the free encyclopedia (373 words)
A water jet cutter is a tool capable of slicing into metal or other materials using a jet of water at high velocity and pressure, or a mixture of water and an abrasive substance.
The cutter is commonly connected to a high-pressure water pump (a local water main does not supply sufficient pressure) where the water is then ejected out of the nozzle, cutting through the material by bombarding it with the stream of high-speed water.
There are few materials that can't be effectively cut with a water jet cutter; one of these is tempered glass which shatters when cut, regardless of the cutting technology used.
  More results at FactBites »

 
 

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