What is an abrasive waterjet ?
Abrasive or water only jet cutting machine uses the technology of high pressure water typically between 30,000 psi
and 90,000 psi, to create extremely concentrated force to cut materials (wear by abrasion). A waterjet cutter pressurizes
water and shoot out a stream of pure water flow (without abrasive)
through an orifice to cut materials such as foam, rubber,
plastic, cloth, carpet and wood. On the other hand, an abrasive waterjet mixes abrasive garnet to a
pressurized water stream to penetrate and separate(cut) materials. High pressure water, at ultra sonic speed,
accelerates the abrasive to grind or erode the material and to cause the separation of the material.
Examples are: stainless steel, titanium, glass, ceramic tile, marble and granite. When cutting
metal, the process yields very little heat therefore no heat affected zone (HAZ),
and hence in most cases will not require further heat treatment. Waterjet is commonly considered as a "cold cut"
process and therefore is safe for flammable materials such as plastic and polymers. No other gas or chemicals are
used with waterjet cutting machine. With a reasonable cutting speed
setting, the edge quality resulted are often of satisfactory. Combined with CNC technology, ultra high pressure water cutting
is a very handy and versatile cutting equipment with affordable price for stone cutting and metal working in job shops.
Sometimes, experienced engineers can diy to make their own machine for fun and for business. Like