Akasel Grinding Consumables (Grinding Paper-Plane/Fine)

Akasel Grinding Paper Plane/Fine are traditionally used for plane and fine grinding of all different materials by MSP Metrology (M) Sdn Bhd from Akasel Denmark.
 

Features

Grinding



Grinding is the first “real” preparation step. Cutting and Mounting are not always necessary, but for a successful metallographic sample preparation a correct sequence of grinding and polishing steps is a must.

The first step is usually a plane-grinding step, either to level all samples in a sample holder, and/or to remove the initial deformation from the sample surface. Depending on the sample size and the depth of deformation, relatively coarse abrasives are used to obtain short grinding times.

A major goal in sample preparation today is to receive a satisfactory result in the shortest possible time at the lowest possible cost. Therefore every step must be considered carefully, also in relation to the following step and the required finish. It does not make sense to have a very fast plane-grinding step if that produces a lot of deformation that will take a very long time to remove in the following step(s).

The plane-grinding step must be selected carefully, as it is crucial for the following preparation steps. It must be fast and at the same time produce samples with a very shallow deformation depth. And the better the planeness of the samples after plane grinding, the faster the following step can be carried out.

Type of Grinding

Plane Grinding



For materials with a hardness higher than 150 HV, the best possible choice is the Aka-Piatto. Aka-Piatto is a multi-layer diamond grinding disc that can replace at least 100 – 200 pieces of SiC Paper. It has a consistently high removal rate and will provide absolutely plane samples with perfect edge retention.

For plane grinding of soft materials with hardness below 150 HV or very ductile materials with a higher hardness grinding paper can still be the correct choice, but harder materials will greatly benefit from the Aka-Piatto.Depending on the size and the hardness of the samples, Aka-Piatto in grit sizes P80 – P220 is used for plane grinding.

Usually a single plane grinding step is sufficient when grinding with AkaPiatto. The absolutely plane samples make it possible to speed up the following fine grinding step.

The table below shows the correct application areas for the different grinding consumables.
 

	Aka-Piatto	Aka-Piatto+	Rhaco Grit Grinding Paper
Fine Grinding	P80, P120, P220	P80, P120, P220	P120, P180, P220, P320
Use With	Water	Water	Water
Hardness Range	> 150 HV	> 150 HV	< 400 HV
Applications/Benefits	Long lifetime, continuous removal and perfect planeness. Can replace several grinding paper steps.	Very long lifetime, continuous removal, perfect planeness, finer surface finish for brittle materials like ceramics and cermets. Can replace several grinding paper steps.	2 – 3 times longer lifetime and higher removal compared to standard SiC- Paper @ P120 – 320.
For use on magnetic support discs	Yes	Yes	Yes when used on Aka-Rhaco

Fine Grinding


After plane grinding, traditionally several fine grinding steps in successively finer grit sizes have been used to make the samples ready for polishing. Also here, new technology has made it possible to speed up preparation and reduce fine grinding to one single step.

Aka-Allegran and Aka-Largan apply a unique system for material removal. Integrated abrasive is released during preparation while abrasive in the form of diamond suspension or diamond spray is applied. The result is high removal, perfect planeness and an exceptional long lifetime

Aka-Largan 9 and Aka-Allegran-9 replace a number of grinding steps, typically P320 – P1200 with one single fine grinding step. With a constant removal rate these discs are also ideal for automatic preparation systems that rely on constant, reproducible settings on every step.

Alternatively, Aka-Piatto can be used in the more traditional way where several grinding steps are carried out successively. As Aka-Piatto is used with water only, cleaning is easier than with Aka-Allegran or Aka-Largan, and not even necessary in-between preparation steps.

For very soft and/or ductile materials it can still be necessary to use traditional grinding paper.
 

Aka-Piatto	Aka-Piatto+	Rhaco Grit Grinding Paper
Fine Grinding	P600, P1200, P2400	P600, P1200	P500, P800, P1000, P1200, P2400, P4000
Use With	Water	Water	Water
Hardness Range	> 150 HV	> 150 HV	< 400 HV
Applications/Benefits	Long lifetime, continuous removal and perfect planeness. Can replace several grinding paper steps.	Very long lifetime, continuous removal, perfect planeness, finer surface finish for brittle materials like ceramics and cermets. Can replace several grinding paper steps.	Better flatness than standard SiC-Paper on fine # sizes because of thinner paper backing.
For use on magnetic support discs	Yes	Yes	Yes when used on Aka-Rhaco

 

Aka-Allegran 9	Aka-Allegran 6	Aka-Allegran 3	Aka-Allegran 1	Aka-Largan 9
Use With	Diamond Suspension 15 – 3 μm	Diamond Suspension 9 – 3 μm	Diamond Suspension 9 – 3 μm	Diamond Suspension 1 – 0.1 μm	Diamond Suspension 15 – 3 μm
Hardness Range	> 450 HV	> 150 HV	> 150 HV	> 150 HV	< 150 HV (< 400HV)
Applications/Benefits	For one-step fine grinding, replaces grinding papers P320 – P1200 in one step. Perfect planeness and edge retention.	For one-step fine grinding, replaces grinding papers P320 – P1200 in one step. Perfect planeness and edge retention.	For one-step fine grinding, replaces grinding papers P320 – P1200 in one step. Also for 3 μm polishing of very hard materials. Provides very short preparation times, perfect planeness and retains soft phases, like soft inclusions in steel.	Can be used as final polishing step of very hard materials, provides outstanding flatness.	For fine grinding of soft and very soft materials.
For use on magnetic support discs	Yes	Yes	Yes	Yes	Yes