Rayco #7 .239 Hex Broach Used In Cobalt Chrome Tibial Stem Extension Screw. Hardness of 47 Hrc & 196 Ksi
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Wobble broach manufacturers and their customers have long had great success broaching hex and square forms, etc in soft materials like brass, aluminum, copper, 1215, 303, and many other materials under 30 Hrc. As the Orthopedic, Aerospace, Oil & Gas, & Automotive industries have required much tougher materials, some as high as 50 Hrc, wobble broach makers have struggled to supply their customers with a tool that is economically viable.
Read MoreA part manufacturer must have confidence in its cutting tools to successfully perform lights-out machining. “When we can’t trust a tool, we can’t do it, so we lose production,” said Ben Sacco, operation manager for Radax Industries Inc.
Read MoreWe recently had an Aerospace manufacturer in Washington State, contact us about the problems they were having trying to wobble broach a 5/16 Hex in 17-4 H900 condition material. The current broaches they were using yielded 0-1 parts per broach.
Read MoreWanted to share this wobble broach tool test received from a major orthopedic manufacturer. This is cutting in BioDur 108C which has an HRC of ~50. It is a very difficult and tough material to cut. Their application is making 2.7mm/3.5mm diameter screws with a range of 12-90mm in length. This test was done vs their previous broach supplier, with both broaches being used in a PCM holder.
Read MoreLast week we received a phone call from a company on the east coast. They were trying to wobble broach a 1/4’’ Hex .375 deep in Custom 455 Stainless . This material is 45 Hrc, and they were having no luck, getting only 0-1 pcs per broach, using broaches from 2 very well known broach manufacturers. They contacted us after being told by these companies this Custom 455 screw could not be wobble broached. The material was just too hard.
Read MoreWe run across this question often from potential customers, especially when trying to rotary broach in a tough medical grade alloy above 30 Hrc such as Custom 455, 17-4 H900, Titanium, or BioDur materials. Finding a Broach tool with perfect blend of wear resistance and toughness is key. Carbide has greater wear resistance than HSS or HiCo HSS, but has much less toughness.
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