How does plum rainy season workpiece rust do? How to solve the problem of rusting workpiece rust preventive measures?

Rust is a common problem in production and storage, especially in the rainy season, even if the job of anti-rust oil coating, there will be a lot of rust problem. The main reason is that many factories on the correct use of rust-proof oil and rust-proof work focus there are misunderstandings, this article will focus on the anti-rust practical experience.

The basic principle of rust

Practical Experience in rust prevention

1. The final antirust Battle of planetary wheel and bracket in a transmission plant

   
   

Problem description on site

Cause analysis and conclusion of rust

1.Environment: rainy season, high humidity

2.Water quality: the former process for cleaning, the use of tap water, with chloride ions, accelerate the corrosion of the workpiece rust

3.Dehydrating agent: no dehydrating agent, dehydrating capacity is insufficient, moisture can not be completely removed from the surface of the workpiece

4.Anti-rust oil: direct on-site anti-rust oil, drain time is very short, when bagging the workpiece hanging a lot of oil

Preventive measures

add dehumidification drying room on site, put the work pieces into the drying room after cleaning evenly and timely, leave it in the room for at least 8-24 hours, and finish oiling at least 4-6 hours after drying, transfer rust-proof oil-coated workpieces to a storage warehouse as soon as possible.

increase dehydration process, dehydration agent can remove most of the surface water of the workpiece, to avoid moisture by anti-rust oil locked in the inside, causing corrosion and rust from the inside out.

standard dip-coating anti-rust oil operation, dip-coating time should not be too short, after the oil can be properly dry after storage, dry the surface of the workpiece oil film uniform, no obvious drip.

specification of storage requirements for parts in temporary storage areas: temperature 15-35 ° C, relative humidity below 70% , diurnal temperature difference not greater than 7 ° C. After anti-rust operation, put the workpiece into anti-rust bag and desiccant sealed storage.

replace the antirust  oil, choose VCI-510D water-based rust-proof agent, can dry, do not worry about the risk of rust-proof oil water locked in the interior.

2.Anti-rust battle between some bearing processing processes

shelf life  is short, part of the bearing rust

Cause analysis and conclusion of rust

Site Environment: the surface rusting of work pieces mainly occurs in summer, especially in rainy season, the site environment is humid, day and night temperature difference and the temperature difference between working fluid and work pieces, resulting in the rapid condensation of working surface condensate.

Grinding fluid: on-site work fluid sulfate radical exceed the standard, by the wheel into the sulfate radical ion accelerated the rust process, resulting in a short time rust workpiece.

Preventive measures

improve the flow of storage car, around the drilling, to maintain ventilation, to avoid condensate generated

Put in the right amount of anti-rust desiccant, moisture, dry, the condensate dry (specific amount find VCI professional engineer)

Wear safety gloves

In the case of continuous rainy weather, if the retention time between processes is more than 4 hours or more, it is recommended to spray antirust agent for antirust treatment

change the work site to a constant temperature and humidity working environment

It is best to use a grinding wheel that does not contain sulphur compounds

Anti-rust work experience summary

Modern rust prevention techniques are changing with each passing day. However, it is particularly important to remove moisture and prevent rusting. The above practice shows that the selection of excellent anti-rust oil is very important to rust prevention work, but the environment, technology and other anti-rust work is equally important. When it comes to rust, it is not only the property of antirust agent, but also the environment, water quality and storage condition. Rust problem must be based on the actual situation, the overall analysis and summary, to find out the cause of rust and improve, optimize the process, with the appropriate rust inhibitor, to ensure the work piece of long-term rust.

If you have any doubt,can inquire us. will  free for you to design a real oil-free antirust package!