Milling Stainless Steel Without Coolant

That was the case with this stavax 420 stainless steel mold core.

Milling stainless steel without coolant.

Mql and dry machining tips. Dry turning is relatively rare for example compared to dry milling. Helical solutions offers the hev 5 end mill which is an. Machines must be substantial and capable of making the deep cuts needed in machining austenitic stainless steel without slowing down the set feed or surface speeds.

Near dry machining with external mist lubrication is recommended when working in steel drilling holes deeper than five times the hole diameter and other applications where totally dry machining is not yet. So lets combine all these factors. Stainless steel can be gummy enough that coolant may be needed as a lubricant when a ball nose or other round profile tool is used. With mist lubrication coolant volume drops to less than 50 ml hour compared to typical flood coolant volume exceeding 6 liter min.

For stainless steel you ll want to use a coolant with a high oil content like straight oil since it has the stickiness associated with aluminum but with the hardness of steel. Therefore dry machining is best suited to steel cast iron and some stainless steel. When dry milling wasn t producing an acceptable surface finish the operator switched to using liquid coolant and the finish improved. That s why you want to air blast coolant without fluid or oil.

When machining stainless steels it important to ensure that there is no dwell or rubbing caused by machine vibration or tool chatter. Also if we review the chart of suitability at the top of the article assume you need to be nearer the top of the chart.