RobbJack High Speed Hard Metal Trochoidal Machining 54 HRc Hardened H13

[bestamerica]

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what kind of metal block

[RobbJackCorp]

This materal is H13 Die Mold Steel at 52-54 Rockwell hardness

[bestamerica]

RobbJackCorp,

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wow thank,,,

hardness steel block is a so heavy,,,

what use for,,,

arms weapons ?

[RobbJackCorp]

Most people use hardened H13 for making molds for plastic injection. Like cell phones, fishing lures, computer mouse, etc. The hot plastic is abrasive so you need a very hard material so they can make thousands of parts.

[RobbJackCorp]

.....{continued from last post}.... In 60 HRc. material and harder you want to go about 2-5% radial width of cut and you can cut up to 1.5X the diameter in Z-depth per pass. You also want to arc the tool in and out of the cut as much as possible. Give me a call if you have any questions: Mike MacArthur at RobbJack Corporation 916--645--6045.

[RobbJackCorp]

You can use trochoidal milling to machine 62-65 HRc. A couple of rules: Use our HM-Series (inch) or MHM-series (metric) tools they are designed for hard metal. Use a tool about 50-62% of the slot width that you need to cut. That way there is enough movement to reduce the amount of the tool engaged in the hard material, thus reducing the heat that is being generated..... {continued... next post}

[princeigorash]

How does help trochoidal milling with conventional milling.

I want to mill a welded channel wich has about 62-65 HRC.I found some applications to work with but it will take a long time to make the part.Could trochoidal milling help me using small radial width 5-10% as in your video to mill hard material?THx.

[RobbJackCorp]

You can use trochoidal milling to machine 62-65 HRc. A couple of rules: Use our HM-Series (inch) or MHM-series (metric) tools they are designed for hard metal. Use a tool about 50-62% of the slot width that you need to cut. That way there is enough movement to reduce the amount of the tool engaged in the hard material, thus reducing the heat that is being generated..... {continued... next post}

[RobbJackCorp]

.....{continued from last post}.... In 60 HRc. material and harder you want to go about 2-5% radial width of cut and you can cut up to 1.5X the diameter in Z-depth per pass. You also want to arc the tool in and out of the cut as much as possible. Give me a call if you have any questions: Mike MacArthur at RobbJack Corporation 916--645--6045.

[RobbJackCorp]

We did check the temperature closer but for the video it looked better farther away. The part stays cool, all the heat is going into the chip. The part and tool are cool to the touch. The tool looks like new after the cut as well. The AlTiN coating on the HM tools helps.

[skyliquid2003]

cool but your too far away to really get a good read on the temp with that one