Milling Stainless Steel Without Coolant

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.

Milling stainless steel without coolant.

Mql and dry machining tips. 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. 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 dry milling wasn t producing an acceptable surface finish the operator switched to using liquid coolant and the finish improved.

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. Helical solutions offers the hev 5 end mill which is an. Small training or hobbies lathes and. With mist lubrication coolant volume drops to less than 50 ml hour compared to typical flood coolant volume exceeding 6 liter min.

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. Therefore dry machining is best suited to steel cast iron and some stainless steel. High efficiency milling can be a very effective machining technique in stainless steels if the correct tools are selected. 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.

Dry turning is relatively rare for example compared to dry milling. So lets combine all these factors.