Precision spring technology standards of inspection standard is what?

Precision spring technology standards of inspection standard is what? Precision springs, metal surface coating and coating of organic chemistry should consider to apply ( Plating) Solid layer of high density, symmetry is consistent, and conventional fusion rules. Spring factory in detail and coating ( Plating) In such as coating layer ( Plating) Layer down, beat or hair flower and part without coating layer, because the metal material with most situations ( Plating) Before the surface is not clean. Compared with solvent architectural coatings, with water as the solvent play yellow metal surface coating solutions, such as electroplating process, anodic oxidation, oxidation, phosphating and water-based paint coating on the surface of metal organic compound pollution of the environment is more sensitive, even a monolayer of air pollutants, which will cause all the processing technology is not successful. Therefore, surface coating materials ( Plating) After the solution before the cleanliness of particularly important.
: 1, the estimate and the method of electronic optical bright metal on the surface of the oil in the human eye and rely on to observe the magnifying glass or optical microscopy at high magnification. Its defect is passivity on the surface of the metal oxide film and thin oil will check. For smooth and bright surface of the metal, described way
just look helpless, but according to use clean, white cotton swab, cloth, paper on the surface, then observed the is neat, in order to make clear the metal surface is clean. 2, surface applanation tonometry method based on surface oil on its surface can harm, according to the metal materials in a series of surface tension is not the same as standard solution is invasion in order to make clear its surface energy, thereby distinguish the clean level of the surface. If produce formic acid from 80% 20% water) ( , V/V) To 1% alcohol series products are 99% water solution, its surface tension relatively from 24. 5×10- 5 n/CM the ascent to 66. 0×10- 5N/CM。 3, paint, in addition to the oil drops on the metal surface, then top up, such as a trace, the surface of the metal surface is clean, such as a circle drawings on how oil entities. 4, wet clean metal surface is hydrophilic, therefore, can thoroughly wet by water, when the metal surface with oil pollution, there will be no water invasion of water areas. According to this basic principle is hydrophilic, apart from very simple common breathing and electronic cigarettes atomizer spray method, test way also has the following categories. Because the metal materials of the oxide film is hydrophilic, therefore, this way
most can not be tested on the surface of the metal oxide film is net.
The global market was valued at leaf spring hardware in leaf spring hardware and is expected to reach a market value of leaf spring hardware by leaf spring hardware, with a CAGR of leaf spring hardware during the forecast period.
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