Our precision cut-off wheels are optimised for high precision cutting of different materials. They are as thin as possible in relation to the diameter to remove an absolute minimum of material, a critical factor when sectioning expensive materials. Thin cut-off wheels limit the thermal damage and mechanical deformation during cutting. This again reduces the following grinding and polishing time.
Aka-Cut 1000 HV, based on Al2O3, is the optimal choice when cutting ferrous metals with a hardness of 500-1000 HV.
Aka-Cut 700 HV, based on Al2O3, is optimised for cutting ferrous metals with a hardness of 150-700 HV.
Aka-Cut 400 HV, based on SiC, is the best choice when high precision cutting of non-ferrous metals with a hardness of 50-400 HV is required.
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What is the difference between SiC and Al2O3 cut-off wheels?
SiC cut-off wheels are typically used for cutting of non-ferrous metals and Al2O3 wheels for ferrous metals.
Why is Al2O3 used for cutting ferrous metals?
Al2O3 has a more blocky, round grain structure than SiC. It will wear slowly and give a long lifetime to the cut-off wheels, making it the correct choice for ferrous metals.
Why is SiC used as an abrasive for cutting of non-ferrous metals?
SiC is a rather brittle abrasive. When breaking down it creates new, sharp edges that are ideal for removing soft and ductile material.
When are precision cut-off wheels used for sectioning?
Precision cut-off wheels are very thin, about 0.5 mm for a diameter of 150 mm. This will remove a minimum of material which is very important when sectioning precious materials. The thinner the cut-off wheel the less energy is needed for sectioning and this again reduces the possible heat damage and deformation in the sample, another advantage of precision cutting. However, these precision cut-off wheels also require a specific precision cut-off machine and cannot be used on larger laboratory type machines.