Material suitable for shearing abrasive cloth

[Syphonics]

Hi guys, I have a automated machine used for shearing abrasive cloth. The cloth is shear using a die cut. Currently the cutter is made of high speed steel of HRC 63. But the life span of the cutter is very short. I need to change the cutting tool twice everyday.
I have tried with carbide material, the lifespan is only 2.5 time more than the high speed steel.
Is there any suitable material for cutting abrasive cloth?


Thanks

[Syphonics]

anyone come across materials use for cutting abrasives cloth?

[MadMax]

What abrasive are you cutting? Whatever material you choose, your cutter is going to have to be substantially harder than abrasive which is a bugger if you actually plan on shearing the particles too. I think your ideal solution would be to cut the cloth backing and let the particles stick to whatever side of the cut they want to.

Are the abrasive particles much smaller than the thread of the cloth backing? Is it possible to cut the cloth backing with the particles on the bottom side and not bottom out the die? I'm assuming you're doing something similar to steel rule die cutting (outline cutting onto a flat backing). If the abrasive particles are coarse, maybe you can stop the die cut before the cutting die bottoms out on the backing plate. Are you using a soft backing plate? Perhaps a softer backing plate would allow the grit to deflect into the plate instead of bearing overly hard on the cutting edges.

Is laser or waterjet cutting an option?

[Syphonics]

What abrasive are you cutting? Whatever material you choose, your cutter is going to have to be substantially harder than abrasive which is a bugger if you actually plan on shearing the particles too. I think your ideal solution would be to cut the cloth backing and let the particles stick to whatever side of the cut they want to.

Are the abrasive particles much smaller than the thread of the cloth backing? Is it possible to cut the cloth backing with the particles on the bottom side and not bottom out the die? I'm assuming you're doing something similar to steel rule die cutting (outline cutting onto a flat backing). If the abrasive particles are coarse, maybe you can stop the die cut before the cutting die bottoms out on the backing plate. Are you using a soft backing plate? Perhaps a softer backing plate would allow the grit to deflect into the plate instead of bearing overly hard on the cutting edges.

Is laser or waterjet cutting an option?

Yeah, I am cutting the abrasives cloth from the back of the cloth. I have 2 cutters, the fixed and moving cutter. The moving cutter actually pushes the back of the cloth (which does not contains abrasives) to the edge of the fixed cutter.
The fixed cutter wears out very fast.
The abrasives grains can be quite tiny and may be thiner than the thread of the cloth.
Both laser cut and waterjet is not suitable for my application.
By using a softer moving cutter actually improved the situation?
What is the general rule of HRC level be for cutters in order to last quite a substainial?