What causes failure antirust oil use? - bearing knowledge

In practice, are often faced with the use of anti-rust oil can not meet the expected anticorrosion effect, even will accelerate corrosion of metal. Check the reason from the following aspects. 1) Antirust oil varieties are kinds of antirust oil, various characteristics of oil are also different. Some good replacement, some wet and heat resistance is better, some better resistance to salt fog, some good at resistance to high temperature and atmosphere and so on, each have special features. Product category is different, have different purposes, have a process for a long time between short-term rust, lubrication rust and antirust. To adapt to different metal additives used in the oil is different also, some have significant effect on black metal, some have adaptability of non-ferrous metals and a variety of metal. So, not any kind of anti-rust oil can adapt to different conditions, must according to the specific situation, stand the test of practice, choosing the appropriate antirust oil. Rust prevention effect is good or bad, but also related to the quality of the antirust oil, should build system of acceptance, the antirust oil into the factory acceptance, prevent unqualified products into the factory. In use process, prevent rust grease oil membrane rupture or erosion and influence its rust resistance. 2) Antirust process of the implementation of the antirust materials in production process and use effect and use of packaging materials, and other factors, and antirust technology an important position in the anticorrosion quality, should be in combination with the practical situation of the unit, make antirust technology, there are someone who's in charge, which can avoid the corrosion caused by process problems. In use process, often found with a group of experienced and qualified antirust oil but will give different antirust effect. This kind of circumstance should be antirust technology for inspection, if a slight negligence, can cause accidents. Antirust technology can check from the following points: clean: because not clean, clean the metal surface with water, hand sweat or salts, etc. , and rust-proof oil used by the lack of adequate replacement, there are hidden dangers of rust. Some used solvent gasoline as cleaning materials, without a replacement in the solvent gasoline rust-proof oil, cleaning comes just when the high humidity climate, in the metal surface can produce condensation phenomenon, and even without prior to the tu rust-proof oil corrosion, if not treated oil directly, will result in corrosion products. Also have failed to timely rust after cleaning, also can make products without prior to the oil rust. Oil seal of the inspection before: metal parts should be checked before oil seal, must be clean and dry, not rust. If already rust must derusting, rust will continue to exist, even development. According to rust after cleaning process of oil seal, ensure the quality of oil seal. Heating: some anti-rust oil thicker, at room temperature can't dip coating or brush, need to use heat melting. If not in accordance with the temperature heating or operating at high temperature for a long time, make some additive decomposition of harmful etchant, this kind of anti-rust oil not only lose anti-rust, instead become a promoter of corrosion. So when heated, it is necessary to control temperature by the regulation, can't long-term high temperature or overtemperature, need not when to stop heating, lest antirust oil deterioration, which can guarantee the antirust effect. Coating method: when coating antirust oil, oil must be thin and uniform. If the oil film is too thick or coating unevenness, causes the metal surface oil film anti-rust along well thin where reservoir thickness and produce non-uniform corrosion caused by the oxygen concentration cell. When dip coating antirust oil, oil drain has a large number of oil that is not due to packaging, make the oil more local corrosion; If found to have a little bit of rust, mainly in the brush brush caused by uneven or when; When spraying can also cause uneven or leak spray oil film. So when coating antirust oil, must make the oil film thin and uniform, not leak, to prevent corrosion. Heating oil seal of the metal parts, it is necessary to cool to room temperature before packing, otherwise prone to corrosion. 3) Rustproof packaging material if packing material quality is bad, choose wrong or improper use, also can make rust failure. Packaging materials do not conform to the requirements of the quality, poor sealing, to reach the purpose of sealing seal. Such as the very selective gas phase corrosion inhibitors for metals, using gas photographic paper, must be chosen according to the metal, otherwise will cause metal corrosion; In addition, the use of anti-rust paper, no rough surface contact with the metal surface, therefore cannot have the desired effect; Some plastic containers also can volatilize the corrosive gas, must be careful; Wooden case packing chooses wood species, dry wet and used in coating, has certain influence on metal parts, even can have very serious impact. Therefore, in the use of packaging materials, it must be combined with the specific circumstances, to choose the appropriate packaging materials, prevent caused by improper use or packaging material selection of corrosion products. 4) The stand or fall of storage environment conditions, has close relationship with the corrosion rate of metal. Using the same kind of antirust oil, the same oil seal antirust process, due to the different storage conditions, the antirust effect. Good storage conditions, antirust period is long, rust protection results. On the other hand, the antirust period is short, antirust effect is poor.