How to clean oil and rust on flanges and pipes?

Cleaning oil and rust on flanges and pipes is an important step to maintain the normal operation of the pipeline system. Here are some effective cleaning methods:

First, oil pollution cleaning

Use cleaner

For light oil pollution, you can use special cleaning agents or solvents to clean. Spray the cleaner on the oil stain and wipe it with a clean cloth.

Take care to choose a cleaner suitable for the nature of oil pollution and ensure that it will not cause corrosion to the flange and pipe material.

High pressure water cleaning

Use high pressure water jet to wash the oil, and use the impact force of water to wash the oil clean.

This method is suitable for a large area of oil cleaning, but it is necessary to pay attention to the control of water pressure to avoid damage to flanges and pipelines.

Steam cleaning

Use the steam cleaner to spray high temperature and high pressure steam to the oil, the high temperature of the steam can quickly decompose the oil, and make it easy to clean.

Steam cleaning has the advantages of high efficiency and environmental protection, but it needs to pay attention to safe operation to avoid burns.

Mechanical scrubbing

For more stubborn oil, you can use wire brush, scraper and other tools for mechanical scrubbing.

The brushing process needs to be controlled to avoid scratches or damage to the surface of the flange and pipe.

Second, rust cleaning

Physical purge

Use tungsten steel spatula, scraper and other tools to remove large area rust.

Use wire brush, emery cloth and other tools to clean the corners of the rust.

Pay attention to avoid mechanical damage to flanges and pipes when removing rust.

Chemical derusting

For more serious rust, you can use chemical rust remover for cleaning.

Apply the rust remover to the rust and follow the instructions in the manual.

It is necessary to pay attention to the selection and use of rust remover to ensure its safety and effectiveness on flange and pipe materials.

Pickling passivation

For stainless steel flanges and pipes, the method of pickling passivation can be used for cleaning.

Pickling can remove the surface oxide film and rust products, while passivation can form a dense oxide film on the surface to improve corrosion resistance.

Pickling passivation operation requires professional equipment and personnel, and requires strict compliance with safe operating procedures.

Third, precautions

Personal protection

Wear appropriate personal protective equipment such as gloves, goggles and protective clothing when cleaning.

Avoid direct contact with skin or eyes of chemicals such as detergents, rust removers or pickling passivators.

Environmental safety

Ensure that the work area is well ventilated to avoid harmful gas or steam buildup.

When using chemical cleaners or rust removers, it is necessary to follow the relevant safety regulations and operating procedures.

Follow-up treatment

After cleaning, the flanges and pipes need to be dried to avoid corrosion or rust caused by residual moisture.

For stainless steel flanges and pipes, passivation treatment may be required after cleaning to improve their corrosion resistance.

To sum up, cleaning oil and rust on flanges and pipes requires the selection of appropriate cleaning methods and tools, and strict compliance with safe operating procedures. With proper cleaning and maintenance, the service life of flanges and pipes can be extended and the normal operation of the piping system can be ensured.