Cutting fluids FAQ

What are some methods to use in preventing aluminum (machined product) discolorations (stains)?

The four general methods are shown below.
1. Use the cutting fluid with the suitable concentration (20x to 30x).
2. The mixing of other oils in the tank is an easy way to generate stains on the products, so remove other oils from the tank.
3. After machining, wash or air blow the products to remove any oil that has adhered to them.
4. Use a cutting fluid that has excellent compatibility with aluminum.

What are some methods to use in preventing dry skin?

Whether dry skin occurs or not depends on an individual's constitution and physical condition, but the four general methods are shown below.
1. Strictly enforce the washing of hands after coming in contact with cutting fluid.
2. Apply protective cream to your hands before performing operations.
3. Wear protective gloves (vinyl gloves).
4. If your constitution makes you sensitive to cutting fluid, consider measures such as switching to a different job.

What are some methods to use in preventing decay?

The six general methods are shown below.
1. Periodically change the cutting fluid.
2. Use a cutting fluid that has high antiseptic properties.
3. Perform thorough concentration management (to keep the concentration in the range of 20x to 30x).
4. Remove the oil that surfaces within the tank.
5. Periodically rotate the cutting fluid among the tanks of machines that have low operating rates.
6. Insert additive agents if you will stop using the machine tool for a long period of time.

What are some methods to use in minimizing the generation of foam?

The four general methods are shown below.
1. Add a foam suppression agent to the tank.
2. Use a cutting fluid that has excellent foam suppression properties.
3. Perform a mechanical review. Foam may be generated by clogged filters or by the structure of the tank.
4. Perform thorough concentration management (to keep the concentration in the range of 20x to 30x), and use the cutting agent with an appropriate concentration.

How should I dilute the source fluid?

Add the appropriate amount of the source fluid to water, and then mix the solution.
Note that if you instead add water to the source fluid, the form of the emulsification will change, which may destabilize the solution.
If the tank's capacity is unknown, dilute the fluid in a pail or similar object, and then fill the tank with the fluid.
Note that you can use a mixing valve (automatic dilution equipment) to accurately and easily dilute the source fluid.

What are some methods to use in preventing the paint of machine tools from peeling off?

Use paints that are appropriate for use with water-soluble cutting fluids. Paints such as phthalic acid and lacquer have weak resistance to water-soluble cutting fluids, and using these paints will lead to them peeling off at a later time. We recommend that you use printed coatings that use urethane paint or epoxy paint.
Cutting fluids that have high pH values also have the tendency to cause paint to peel off.

What can you tell me about the precautions regarding machine tool compatibility when using water-soluble cutting fluid?

Check whether your machine tools support water-soluble cutting fluids.
If you are using paints that have weak resistance to water-soluble cutting fluids, the paints may peel off.
Also, if you are using sealant that has weak resistance to water-soluble cutting fluids, problems such as sealant expansion, contraction, and dissolving may occur.

How should I perform concentration management?

The general way that concentration is measured on site is with a refractometer (saccharometer).
MORESCO has prepared concentration inspection diagrams for each cutting fluid, so contact us to request one of these diagrams.
Be careful to ensure that oils that surface in the tank are not mixed in when you perform measurements.

How should I dispose of the waste fluid of water-soluble cutting fluid?

The waste fluid of water-soluble cutting fluid must be treated.
Also, after the fluid is treated, it must be further treated until it complies with the environmental standards determined by each local authority.
Therefore, we recommend that, in general situations, you have a fluid waste disposal contractor take care of your waste fluid of water-soluble cutting fluid.

What different types of water-soluble cutting fluid are available?

The following four types of water-soluble cutting fluid are available.
1. Emulsion type
When diluted with water, this type becomes cloudy, like milk. This type has excellent lubricating properties and is mainly composed of a large amount of base oils and surfactants.
2. Soluble type
When diluted with water, this type becomes transparent or semi transparent. This type has excellent washing properties and is mainly composed of a, relatively speaking, large amount of surfactants with a small amount of base oils mixed in.
3. Synthetic solution type
When diluted with water, this type becomes transparent. This type has excellent washing and cooling properties and is mainly composed of synthetic lubricants.
4. Chemical solution type
When diluted with water, this type becomes completely transparent. This type has excellent washing and cooling properties and is mainly composed of inorganic salt.

How long of a service life does a water-soluble cutting fluid has? How do you determine that a fluid has reached the end of its service life?

You can judge that a fluid has reached the end of its service life when it meets the following conditions.
1. The fluid exhibits drastic degradation.
Decay or rust is noticeable even when the concentration is correct.
Even though the concentration is high, the pH does not increase and the fluid is not expected to recover.
2. A great number of other oils have mixed in with the fluid.
The external appearance of the fluid has changed drastically (the color has changed to dark brown or gray). The machines become extremely sticky after using the fluid.
The fluid service life varies depending on the usage conditions, but, generally speaking, the fluid should be changed once every 6 months to 2 years. 

Are there regulations related to the storage location and amount that can be stored of water-soluble cutting fluid?

The majority of water-soluble cutting fluids are classified as non-hazardous materials according to the Fire Service Act of Japan.
You are not required to make an application to store or otherwise handle non-hazardous materials. Use the material safety data sheet (MSDS) to check the applicability of the Fire Service Act.

What can you tell me about the precautions regarding storing water-soluble cutting fluid?

Store water-soluble cutting fluid indoors, and avoid locations with extremely high or low temperatures.
Also, always leave the lid on the source fluid container during storage to prevent water and other foreign materials from mixing into the fluid. Avoid storing the fluid for a long time. Use the fluid within half a year of it entering storage.

What can you tell me about the precautions regarding selecting water-soluble cutting fluid?

There are a great number of different water-soluble cutting fluid products, and there is great variety among these products.
Therefore, although the trends of the various products vary slightly, we have separated the general precautions regarding selecting water-soluble cutting fluids into the precautions for each type.
1. Emulsion type
Because this type contains a large amount of mineral oil, it is easy for this type of fluid to remain on machinery and products, which can easily lead to sticky surfaces and a decrease in washing properties. Also, this type has a tendency to be inferior to the soluble type in terms of antiseptic properties.
2. Soluble type
This type has excellent permeability and cooling properties, but it has a tendency to be inferior to the emulsion type in terms of lubricating properties. Also, when lubricating oils and other similar substances mix into this type, it becomes cloudy.
3. Synthetic solution type
This type has excellent cooling properties, but it has a tendency to be inferior to the emulsion type in terms of finished surface roughness of machined soft materials such as aluminum.
4. Chemical solution type
This type does not contain any base oils, so you can make no expectations regarding its lubricating properties. It has high permeability, which also means that it may lead to problems such as paint peeling and dry skin.