Machining tools require constant cooling and lubrication whilst in use and it is vital that the correct type of cutting fluid is used. This is because machining creates heat which must be dissipated before damage occurs. There are many different types of cutting fluid and you need to choose the one that best suits the equipment you have and the type of fluid that is recommended by the manufacturer. Don’t forget, we offer a great range of cutting oils and fluids which have been specially developed to cool, protect and lubricate machining tools.
Unless you’re doing dry machining, you’ll use some kind of cutting oil or fluid in your machines. Cutting fluids and oils provide lubrication and cooling. They also help remove chips from the cutting area. Selecting from the hundreds of available cutting fluids can be a real challenge. Experts in the business offer some guidelines on selecting and maintaining this important part of the machining process. Usually, you’ll choose either a straight oil or a water-miscible (dilutable) fluid.
These are “mineral oils,” petroleum products made fromcrude oil. Straight oils offer the maximum amount of lubrication, and the least cooling capacity. Blended with additives to improve performance, these oils are often used in screw machines and in heavy cutting operations like broaching and gun drilling.
Vegetable oils can be used instead of, or in addition to, mineral oils in many applications. They tend to have better lubricating qualities, and higher flash point, which is the temperature at which their vapor will ignite. In one cutting oil product line, for example, the flash points range from 200F to over 460F, with the vegetable oils on the higher end.
In addition to straight oils, three kinds of water-miscible cutting fluids are widely used. They give good tool life and help to produce a good surface finish, said Randy Templin, vice president, Blaser Swisslube, Goshen, N.Y., a manufacturer of cutting oils and fluids. When properly mixed, the fluid is mostly water, with a few percent of the fluid concentrate, which is made up of oil and/or synthetics, plus additives. Click to continue
Cutting fluid characteristics
Cutting fluid types and uses