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When metal is coated, although a complete compact body cannot be achieved, the oxidation resistance is much improved(pink aluminum oxide). It will not peel off even if it is cold. In Europe, it is used for coating at room temperature of 1700~2550℃ and ultra-high temperature range. For example, the adhesion of the anti-corrosion layer is not enough(white aluminum oxide grit). On the one hand, it is used as a sign to identify him, but also to prevent atmospheric corrosion.

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The formed body can be used in automobiles(brown fused alumina), shipbuilding, aircraft, missiles, spacecraft devices, industrial furnaces of steel (non-ferrous metals, petroleum refining, etc.), and atomic reactors. , Cables, electronic equipment, building materials, etc. Only when inorganic acids are discovered, can metal chemical corrosion processing technology become possible(brown aluminum oxide sandblasting), and the craftsmen who made the armor often painted all parts of it with paint.

(high quality chrome alumina suppliers saudi arabia)It is difficult to corrode metals with these organic acids alone(brown aluminum oxide). Obviously, metal chemical corrosion processing technology lags behind the discovery of inorganic acid, which may also be related to the development of effective anti-corrosion materials. Chemical corrosion processing did not become popular until the 15th century(low sodium white fused alumina), when it was mainly used for the processing of other armors and the corrosion processing of artworks.

We can estimate the various difficulties encountered by these craftsmen who specialize in corrosion(brown aluminium oxide). When the corrosion depth requirement is not reached, the anti-corrosion layer may fall off in all areas. It needs to be polished by hand to remove all the corrosion burn marks(brown aluminum oxide 16 grit); the earliest record of anti-corrosion material is to use linoleum paint as a protective layer, and later records also use paraffin wax as an anti-corrosion agent.(high quality chrome alumina suppliers saudi arabia)

With the discovery of highly corrosive inorganic acids and anti-corrosion materials, this technology has been continuously improved and perfected, making it of high practical value(brown fused alumina price). At the end of the 14th century and the beginning of the 15th century, the thin-plate type of the armor was very common during this period(white aluminium oxide super fine). It is difficult to use the manual slow engraving method commonly used before, so people have to find new pattern processing methods.

(high quality chrome alumina suppliers saudi arabia)From ancient times to the end of the 16th century in recent decades(white aluminium oxide), the earliest records of the use of this technology may also be that various human protection metal parts such as weapons, helmets, and chest protectors were made using the most advanced methods, and their hardness Very high(aluminum oxide 30 or 40 grit). Only the more corrosive this compound is, the more likely it is to be used as a chemical raw material for corrosion. buried underground.

It is probably due to accidental damage to these layers and rust, and the rust spots on his armor formed patterns(black aluminum oxide). began to use natural resins such as paraffin wax as a protective layer later. Through various experimental studies, they soon discovered the method of using acid to perform pattern corrosion processing(aluminum oxide blasting media). The pattern production is replaced by a much more effective chemical etching process based on acid etching.(high quality chrome alumina suppliers saudi arabia)