Hat Creek Radio Observatory Soda Blasting (2328577820)

Soda blasting is a mild form of

abrasive blasting Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove su ...

in which

sodium bicarbonate Sodium bicarbonate ( IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation ( Na+) and a bicarbonate anion ( HCO3− ...

particles are blasted against a surface using

compressed air Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air is an important medium for transfer of energy in industrial processes, and is used for power tools such as air hammers, drills, wrenches, an ...

. It has a much milder abrasive effect than

sandblasting Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove s ...

. An early use was in the

conservation-restoration of the Statue of Liberty A centennial conservation-restoration of the Statue of Liberty (''Liberty Enlightening the World'') occurred between 1984 and 1986. The Statue of Liberty, by French sculptor Frédéric Auguste Bartholdi, is a colossal sculpture on Liberty Island ...

in the 1980s. Soda blasting is a non-destructive method for many applications in cleaning, paint and varnish stripping, automotive restoration, industrial equipment maintenance,

rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO( ...

removal,

graffiti Graffiti (plural; singular ''graffiti'' or ''graffito'', the latter rarely used except in archeology) is art that is written, painted or drawn on a wall or other surface, usually without permission and within public view. Graffiti ranges from s ...

removal, molecular steel passivation against

, oil removal by

saponification Saponification is a process of converting esters into soaps and alcohols by the action of aqueous alkali (for example, aqueous sodium hydroxide solutions). Soaps are salts of fatty acids, which in turn are carboxylic acids with long carbon chains. ...

and translocation,

masonry Masonry is the building of structures from individual units, which are often laid in and bound together by mortar; the term ''masonry'' can also refer to the units themselves. The common materials of masonry construction are bricks, building ...

cleaning and restoration, soot remediation, boat hull cleaning and for food processing facilities and equipment and tooth cleaning at the dental laboratory.

Applications

Soda blasting can be used for cleaning timber, wood, oak beams, oak floors, doors, stairs & banisters, cars, boat hulls, masonry, and food processing equipment. Soda blasting can also be used to remove

. and to clean

structural steel Structural steel is a category of steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, si ...

. Soda blasting is very effective for mold and fire/smoke damage cleanup as it cleans and deodorizes.

Equipment

A soda blaster is a self-contained system that includes a blast generator, high pressure compressed air, moisture decontamination system, blast hose, and a blast nozzle. The blasting material consists of formulated

(also known as baking soda). Blasting soda is an extremely

friable Friability ( ), the condition of being friable, describes the tendency of a solid substance to break into smaller pieces under duress or contact, especially by rubbing. The opposite of friable is indurate. Substances that are designated hazardous, ...

material that undergoes micro fragmentation on impact, literally exploding away surface materials without damage to the substrate. Since sodium bicarbonate is much softer than the

silicon carbide Silicon carbide (SiC), also known as carborundum (), is a hard chemical compound containing silicon and carbon. A semiconductor, it occurs in nature as the extremely rare mineral moissanite, but has been mass-produced as a powder and crystal s ...

or aluminium oxide used in sandblasting, the blast nozzle used for soda blasting applications can be made of soft metals such as brass or steel. The pressures used are very low compared to those used in sandblasting, e.g. 20psi as opposed to 120psi.

References

{{Reflist Industrial processes Graffiti and unauthorised signage Cleaning methods Abrasive blasting Conservation and restoration of vehicles de:Sodastrahlen