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For frequent and industrial use, cleaning and degreasing may be replaced by supercritical carbon dioxide or dry Ice blasting, which is abrasive. This requires a setup to apply the carbon dioxide. While the harmful vapors are eliminated, the CO 2 must be ventilated. Applying the carbon dioxide causes electrostatic discharge by the expanding gas.
Alkaline cleaning agents contain strong bases like sodium hydroxide or potassium hydroxide. Bleach (pH 12) and ammonia (pH 11) are common alkaline cleaning agents. Often, dispersants, to prevent redeposition of dissolved dirt, and chelants, to attack rust, are added to the alkaline agent.
O-2 (98% argon/2% oxygen) is used for spray arc on stainless steel, carbon steels, and low alloy steels. Better wetting than O-1. Weld is darker and more oxidized than with O-1. The addition of 2% oxygen encourages spray transfer, which is critical for spray-arc and pulsed spray-arc GMAW. O-1 (99% argon/1% oxygen) is used for stainless steels.
It has a strong spray and suction design that helps you target stuck-in stains and work them out. More than 10,000 reviews on Walmart are obsessed with this stain-fighting tool, too.
To use, spray the stain with the formula and let it sit for up to an hour. It will create a rich lather upon contact on even set-in stains. After 60 minutes, soak up the stain using a paper towel ...
Carbon dioxide cleaning was contemplated in the 1930s, and the "pellet" approach was developed in the 1970s by E.E. Rice, C.H. Franklin, and C.C. Wong. [4]: 276 The introduction of CO 2 snow cleaning, with its ability to remove sub-micron-scale particles, is credited to Stuart Hoenig of the University of Arizona , who first published on the ...
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A dust spray can often be used as a freeze spray. Many gas dusters contain HFC-134a (tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes.