Varieties of antirust grease
There are many kinds of antirust grease, and the characteristics of various kinds of oil are different. Some of them have good displacement, some have good resistance to damp heat, some have high temperature resistance and good atmospheric resistance, etc., each has its own strong points. Different types of oil, different uses, lubrication, rust prevention and long-term storage rust prevention. The additives used in oil products are different from those of metals, some of which have significant effects on ferrous metals, and some of them have adaptability to nonferrous metals and many metals. Therefore, not any kind of antirust oil can adapt to a variety of different conditions, must be based on specific circumstances, through the practice of testing, select the appropriate anti rust oil.
The quality of antirust is also related to the quality of antirust grease. It is necessary to establish a check and accept system to check and accept the antirust grease in the factory, so as to prevent the unqualified products from entering the factory. In the process of use, to prevent rust oil film rupture or loss, and affect the rust resistance.
Implementation of antirust process
The materials used in the production of anti rust effect and use technology and packaging material and other factors, and the anti rust technology occupies a very important position in the rust quality, should be combined with the actual situation of the unit, a person responsible for the formulation of anti rust process, it can avoid the corrosion caused by technical problems. In the process of using, it is often found that the same batch of qualified antirust oil will get different rust prevention effect. This situation should be checked from the rust prevention process, if a little negligence, it will cause accidents. The rust prevention process can be checked from the following points:
Cleaning: because the cleaning is not clean, leaving water, hand sweat or salt on the metal surface, and the use of rust preventive oil and lack of sufficient displacement, there is corrosion hazards. There is no timely rust prevention after cleaning, but also will make the product has been corroded before being oiled.
Before oil seal inspection: metal parts should be inspected before the oil seal, must be clean, dry, not rust. Rust must be removed if rust is present, otherwise rust will continue to exist and even develop. After rust removal, oil seal is made according to rust prevention technology to ensure the quality of oil seal.
Heating: some antirust grease is thick, can not dip coating or brush at room temperature, need to be heated before melting to use. If not heating according to the prescribed temperature or operating at high temperature for a long time, some additives will be decomposed into harmful corrosion agents. This antirust oil will not only lose rust resistance, but also become corrosion promoter. Therefore, the heating must be controlled according to the provisions of the temperature, not long-term high temperature or over temperature, not to stop heating, so as to prevent rust oil deterioration, so as to ensure the effect of rust prevention.
Coating method: when coated with antirust grease, grease must be thin and uniform. If the oil film is too thick or uneven coating, will cause the metal surface oil film thin rust prevention is very good, and in the thick oil layer place uneven oxygen concentration cell caused by corrosion. In the process of coating antirust grease, because the oil is not drained, there is a large amount of oil that is packed, so that more oil corrosion occurs; if there is a trace of corrosion. Heating oil seal metal parts, must be cold to room temperature after packaging, otherwise it is easy to produce corrosion.
Rustproof packing material
If the quality of packaging materials is not good, the choice of errors or improper use will also prevent rust failure. Packaging materials do not meet the quality requirements, poor sealing, it can not reach the purpose of sealed storage. For example, selective gas phase corrosion inhibitor on metals is very strong, the use of gas film, must according to the metal to choose, otherwise will cause corrosion of metals; in addition, the use of anti rust paper, no rough surface contact with the metal surface, so it can not play the desired effect. Therefore, in the use of packaging materials, must be combined with the specific circumstances, choose the appropriate packaging materials, to prevent the choice of packaging materials or improper use of products caused by corrosion.
storage environment
The storage condition is closely related to the corrosion rate of metals. Using the same antirust oil, the same oil seal antirust process, because the storage conditions are different, the antirust effect is quite different. Storage condition is good, antirust period is long, antirust effect is good. On the contrary, the rust prevention period is short, and the antirust effect is poor.
