Cast iron. Carbon Steel. Blades, rotors, and welds. Zirconia requires more pressure to sand, so the belts are better-suited for jobs on harder surfaces and not ideal for polishing.
Ceramic sanding belts are making a significant impact on the quality and efficiency of metal grinding applications. They are very popular in the knife industry for finishing high carbon steel. Ceramic abrasives provide the longest life and fastest cut rate out of any other type of abrasive grain.
Their structure is more uniform than zirconia and their micro-crystalline habit enables them to break down in a more controlled manner and be used in a broader range of applications, including:.
Aluminum castings. Stainless steel finishing. Titanium alloys commonly used in aerospace applications. Mild steel mill scale. The micro-grain structure of ceramic sanding belts results in smaller fragments being broken away during the grinding process, which gives them a longer performance life than their zirconia counterparts.
However, unlike zirconia, ceramic is especially sensitive to pressure and heat, so their use in such applications must be carefully engineered. As high-performance belts, both zirconia and ceramic sanding belts will last longer and remove metal faster than aluminum oxide or silicon carbide sanding belts. Both belts have the ability to resharpen as they wear and both are primarily used on metal applications.
This means you should also avoid direct exposure to sunlight and any of the elements. When possible store up, off the ground.
It is also recommended that whenever possible you store in the original, unopened packaging. Sparky Abrasives is willing to replace your sanding belt if you have issues with the belt coming apart at the splice.
Should this happen, please contact our customer service. Toggle menu Toll Free I got a small belt sander for metal and ordered a variety of belts, both zircon and and silicon carbide. I have no experience with belt sanders for metal but I imagined they should have lasted longer.
I got some fairly decent ones, not HF stuff Is this normal wear? I searched the posts and there were a few suggestions of brands. Anyone have any that seem to last a lot longer than the others? H-M Lifetime Diamond Member. Joined Dec 20, Messages 8, I've been using the ceramic belts from Red Label Abrasives Amazon carries them and they hold up great. I've ground 9 model tools from mild steel keystock, 7 HSS tools and some mild steel flat stock with the same belt and it still cuts well.
I will no longer be using Aluminum Oxide like before. You might give them a try. What are you grinding? That determines what grit you get. Dabbler Administrator Staff member. H-M Supporter Gold Member. Joined Oct 11, Messages 2, The longevity of your sanding belts depends on a bunch of factors.
I had a hard used zirconium belt last 18 years on my 6X48" belt sander. That belt finally became so dull I retired it. On the other hand, some off branded ones only lasted a month. Quality: good bonding, particle uniformity and backing strength make for a long lasting belt and particle type, too.
Good belts might be what looks like poor value, but poor belts are worthless. For instance a 1 X 32 belt sander will not allow the belt to be used for a long time no matter what belt you buy. That's because the radius of the wheels will tend to break up your resin bonds. AND they run far too fast.
This is also a tip for the 2X72 inch crowd. Many of them are boasting about material removal at SPFM. Well that will reduce the life of a belt by a lot. With a larger contact area, you can and should press harder. If you are pressing red hot steel into the grit, the bonds will be worthless, and you will throw the grit off your belt.
So keep your work piece cool. That's why 6X48 sanders have very long belt life - the width prevents stretching the belt under almost any circumstance. BTW I'm building a 2X72 belt grinder.
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