Advanced Search

Overall it looks like you aren’t blowing the molten material out correctly, or the odd material type you mentioned is really bubbly when it oxidizes.  You really shouldn’t get that kind of dross on either the part or the sheet.

Two thoughts on things to check:

1.  Ive seen this in testing when the torch to material distance becomes too large.

2.  That material looks too thick for fine cut.  Try the same cut with 45amp nozzle using 45amp material speed settings.  Eventually if it works you'll have to re post to account for the different kerf width.  I was like you thinking that “fine cut” = greater precision.  It’s true but only in thin sheet metal.  For anything else, while there may be cut settings in the hypertherm manual, you should steer clear.  I’ve had better success with 45amp consumables and settings in materials similar to what you show.  The kerf width of the arc in conjunction with the thickness doesn’t allow the molten material any place to go.  And thus it can’t blow it away correctly.

 

Air pressure is the same and so should be the speed. Say I cut out a 1” x 4” rectangle. If I start at the bottom right corner and cut left in the -x direction I will get tons of slag on the part but non on the sheet. Once I cut up in the y and then start cutting right in the +x direction the slag moves from the part and goes to the sheet and the part is slag free. That’s why this is confusing me and quite frustrating.

Got Linuxcnc loaded onto the replacement drive. I just hope setting it up is easier than it was 3-4 years ago. I really struggled the first time I set it up as I am not a Linux guy at all so it was very confusing.

On transit to EuSurplus (limited quantities):

7i76EU
7i76U
7i84U

we now have a reasonable stock on most of the common boards.

Hi,

Good day. Newbie here. Would just like to crowdsource and steer us to the right direction with regards to retrofitting a milacron arrow with BDS4 axis servo controllers and VFS5 spindle servo controllers.

Any inputs and directions will be greatly appreciated.