Finer surfaces, less wear, higher tolerances and shorter lead times... Selecting the right metalworking fluid for turning is usually primarily about getting as much out of the machining step as possible. However, there are other aspects to think about.
What is often ignored is seeing the metalworking fluid as a component in a system which must also be compatible with metalworking machines and handling processes.
It should also have a long service life and good bacterial resistance so that there is no downtime in production.
What material is to be machined
The choice of fluid is first and foremost governed by the material that is going to be processed. If it is a stainless material, it can be good to use a fluid with EP-additives (additives that make the oil better at handling high pressure between the bit and the workpiece). Aluminium and titanium are materials that place high requirements on lubricity. If, for example, the material is instead ordinary carbon steel, it will not have equally high requirements and a more simple fluid can be selected with the aim of effectively cleaning and transporting chip.
Handling concerns
Handling metalworking fluid is also an aspect of the choice that is often overlooked. What I mean by this is that an overview should be made of how the fluid is transported, stored and discarded. Does the fluid contain substances that can wear seals? Does the fluid contain substances that must be disposed in a specific way? Does the fluid contain special toxins that have to be handled in a specific way?
It can be worth selecting another fluid that will not entail indirect costs, hazards for staff and additional work.
The company's guidelines
Also ascertain whether the fluid you are considering is compatible with your chemical restrictions.
Lastly
Take your time making your selection. Try to see the fluid as a component that is in contact with your entire workshop. It has to be right everywhere. It is therefore good to give the selection a high priority. The selection process should involve all parts of your company, from purchasing to the chemicals department.
Make sure that your metalworking fluid supplier can provide good service, training and assistance with analysis.
(JÖ)
Comment