what is shot blasting, sand blasting, grit blasting?

Question

may b its something related to cleaning or finishing metals but i can not find the perfect thing. please help

Answer 1

well sand blasting meanz firing grnual sized particles on a pice of metal for giving it a good finishing or matte finish, shotblasting or grit blasting is done to clean the metal after the previous process

Answer 2

What Is Shot Blasting

Answer 3

Shot Blasting - A rapid, dust free process that leaves the substrate clean and dry. Shot blast machines hurl shot toward the intended surface at a high speed, removing debris, paint and buildup from the surface.

Sand Blasting - Procedure for cleaning of metal surfaces, for which fine silica sand is blasted through a nozzle onto the surface by means of compressed air to remove scale as well as other coverings.

Grit Blasting - A technique of abrasive cleaning or surface preparation using sharp particles (eg, cast iron shot, aluminum oxide). It covers such processes as removal of scale, corrosion, paint and other surface films. Use of free silica presents a health threat and should be avoided.

Answer 4

Sandblasting or bead blasting is a generic term for the process of smoothing, shaping and cleaning a hard surface by forcing solid particles across that surface at high speeds; the effect is similar to that of using sandpaper, but provides a more even finish with no problems at corners or crannies. Sandblasting can occur naturally, usually as a result of the particle blown by the wind causing eolian erosion, or artificially, using compressed air. An artificial sandblasting process was patented by Benjamin Chew Tilghman on October 18, 1870.

Historically, the material used for artificial sandblasting was sand that had been sieved to a uniform size. The silica dust produced in the sandblasting process caused silicosis after sustained inhalation of dust. Sandblasting may now only be performed in a controlled environment using ventilation, protective clothing and breathing air supply (as it is shown in the top image).

Other materials for sandblasting have been developed to be used instead of sand; for example, steel grit, steel shots, copper slag, glass beads (bead blasting), metal pellets, dry ice, garnet, powdered abrasives of various grades, powdered slag, and even ground coconut shells or corncobs have been used for specific applications and produce distinct surface finishes.

Answer 5

It depends upon who you are asking. I would take it to be a reference to the type of media that is being used to. Shot blasting is typically using a large media for the purpose of reshaping and re surfacing. Sand blasting is using a sand like media for the purpose of cleaning, Grit blasting is much the same but for different purposes. I found this article from a business that does this: http://latem.com/Shot-Peening-vs-Shot-Blasting-vs-Hand-Blasting.htm.

Also this wikipedia entry: https://en.wikipedia.org/wiki/Abrasive_blasting.

Answer 6

Shot blasting or sand blasting is done in a machine in whose chamber the cast iron parts of machinery and small steel shots strike on them with very fast velocity. In this time the coveyor belt rotates and the parts get cleaned up.

Answer 7

Shot, Sand and grit blasting is the process used to clean the residual sand from the castings. With air at high velocity lead shots or sand is used to clean the castings. When the shots/ sand strike the casting the sand is removed.