2012年11月8日星期四

What causes the use of anti-corrosion grease failure


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Often encountered in practical applications, antirust oil to reach the expected rust effect, and even accelerate metal corrosion. The reason for this is available from the following aspects to be checked.
1) anti-ru st oil varieties

The antirust oil more varieties, the characteristics of the various oil also different. Some better replacement, some of the heat and humidity resistance, some resistance to salt spray better, and some high temperature and resistance to atmospheric better, each with its own specialty. Oil, different types of uses are different, the process between the short-term anti-rust, lubricating and rust-proof and long-term storage rust. The oil used additive adaptation metal, some black metal have a significant effect, and some non-ferrous metals and a variety of metal adaptability. Therefore, not any kind of anti-rust oil can adapt to various conditions, must be tested in practice, under specific circumstances, to choose the right anti-rust oil.

Anti-corrosion effect is good or bad, but also with the quality of the anti-rust oil, should establish a verification system, antirust oil for acceptance into the factory to prevent substandard products into the plant. During use to prevent rust oil film rupture or loss affect its anti-rust properties.steel ball bearing

2) rust process implementation

The effect of the rust-proof materials in the production and use associated with the use of technology, and packaging materials and a variety of factors such as antirust process accounted for a very important position in the rust-proof quality, the units should be combined with the actual situation, the development of anti-rust process, there is someone responsible for, it can avoid the corrosion caused due process issues. In the process, it is often found with a group of experienced qualified received antirust grease but it will come to a different anti-corrosion effect. This situation should be rust-proof process checks, if a bit negligent, it will cause an accident. The antirust craft can be checked from the following points :

Cleaning: cleaning clean water, hand sweat, or salts left on the metal surface, anti-rust oil and lack of adequate replacement, there is a hidden rust. Some use solvent gasoline plus replacement of anti-rust oil cleaning materials, no solvent gasoline, cleaning time and a time when high humidity climate will produce condensation phenomena in the metal surface, even in the not coated with anti-rust oil before has rust if not treated directly oiled, he will lead product rust. Not timely and anti-rust after cleaning, also make products not coated with oil before rust.

Before checking the oil seal: metalwork should be carried out before the oil seal checks must be clean and dry, not rust. Such as rust must be rust, or corrosion will continue to exist, even development. Rust, rust-proof process oil seals, to guarantee oil seal quality.

Heating: some rust oil more viscous at room temperature when not dipping or brushing can be heated to melt. If not by a predetermined temperature heating or to operate at high temperatures for a long time, so that some additive decomposition become hazardous etchants, such a rust preventive oil is not only losing the rust resistance, on the contrary a corrosion accelerator. Therefore must be in accordance with the regulations in the heating, temperature control, can not be long-term high-temperature or over-temperature, do not stop heating, in order to avoid anti-rust grease deterioration, which can ensure the effects of the anti-rust.

The coating method: In coating antirust oil, the grease must be thin and uniform. If the film is too thick or uneven coating, good rust resistance of the oil film is thin will cause the metal surface to produce uneven oxygen concentration cell where the oil layer thickness caused by the corrosion. Dipping antirust oil, there are a large number of oil because the oil is not drained, packaging, oil more local produce corrosion; such as a trace of rust, mainly uneven or missing when brushing brush ; when spraying can also cause the film uneven or leak spray. Therefore, in the coating of rust oil, must make the film thin uniform can not be missed coated to prevent corrosion. Heating oil seal metal parts must be cooled to room temperature before packaging, or prone to corrosion.

3) Rustproof Packaging Material

The poor quality of packaging materials, choose the wrong or improper use, but also make the anti-rust failure. Packaging materials do not meet the quality requirements, poor sealing, reached less than sealing archived purposes. For example, vapor phase corrosion inhibitor highly on the selectivity of the metal, with gas photographic paper, must be based on a metal chosen, otherwise will lead to corrosion of metal; Further, when using the rust-proof paper, the rough surface in contact with the metal surface, and therefore can not be played Some plastic containers can be volatilized to the expected results; corrosive gases, must be used with caution; timber packaging wooden box selected varieties, wet and dry, and paint, metal parts have a certain impact, maybe even very serious impact. Therefore, the use of packaging materials, it must be combined with the specific circumstances, to choose the right packaging material, to prevent rust caused by improper packaging materials selection or use of products.bearing catalogue

4) Storage Environment

The storage conditions are good or bad, and has a close relationship with the corrosion rate of the metal. Use with a rust oil, same Seal antirust process, due to different storage conditions, resulting rust-proof effect is not the same. Good storage conditions, rust period, the antirust effect has been achieved. On the contrary, the rust period is short, the the antirust effect also poor.

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