Milling Stainless Steel Without Coolant

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.

Milling stainless steel without coolant.

Chipbreaker roughers would make an excellent choice in either 5 or 7 flute styles while standard 5 7 flute variable pitch end mills can also perform well in hem toolpaths. When dry milling wasn t producing an acceptable surface finish the operator switched to using liquid coolant and the finish improved. 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. Therefore dry machining is best suited to steel cast iron and some stainless steel.

With mist lubrication coolant volume drops to less than 50 ml hour compared to typical flood coolant volume exceeding 6 liter min. Mql and dry machining tips. So lets combine all these factors. 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.

When machining stainless steels it important to ensure that there is no dwell or rubbing caused by machine vibration or tool chatter. That s why you want to air blast coolant without fluid or oil. Dry turning is relatively rare for example compared to dry milling. High efficiency milling can be a very effective machining technique in stainless steels if the correct tools are selected.

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