Milling Stainless Steel With Hss

A 1 00 inch high speed steel hss drill is being used on a piece of 1045 steel with a brinnel hardness of 300. Hss twist drill recommended speeds and point angles. Free machining plain carbon steels resulfurized 1212 1213 1215.

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Recommends sfm feed rates and point angles for hss twist drills for various workpiece materials.

Milling stainless steel with hss.

Gray cast iron 180 hb. In high speed steel hss drills this heat will cause the tool to lose its hardness. Cutting speed 50 fpm diameter of cutter 1 00. When you machine stainless steel you are generating high temperatures explained scott turner marketing manager holemaking seco tools.

Helical solutions offers the hev 5 end mill which is an. A 3 4 inch hss drill is used on a piece of leaded 11l17 steel with a brinnel hardness of 100. And hb brinell hardness number. Speeds for turning based on a feed rate of 0 012 inch per revolution and a depth of cut of 0 125 inch.

Machines should not be prone to excessive vibration in the machine bed drives and gear boxes or at the cutting tool or its mountings. In solid carbide drills microcracks can form on the cutting edges which will eventually cause the drill to fail. Are unlikely to be substantial enough for the successful machining of stainless steels. This article gives suggested feeds and speeds for drilling and reaming taken from the bssa stainless steel specialist course training note no9 machining stainless steels.

Stainless steel 400 series and ph. Stainless steel 200 300 series. Recommended cutting speeds in feet per minute for turning milling drilling and reaming ferrous cast metals. Calculate the rpm setting to perform this cutting operation.

High efficiency milling can be a very effective machining technique in stainless steels if the correct tools are selected. Traditionally high speed steel hss tools have been used for drilling and reaming but carbide tipped tools are also used for specialised jobs or long production runs. 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. Small training or hobbies lathes and milling machines intended for machining mild steel brasses etc.

Q and t quenched and tempered.

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