ELECTROCHEMICAL HONING PROCESS-
What is ElectroChemical Honing process? What are its advantages and Applications?
ElectroChemical Honing process comes under the process of ElectroChemical Machining process. It is the usage of combined power of electricity and chemical energy for the material removal from the work piece is known as ElectroChemical Machining process. Now lets know about ElectroChemical Honing process. ElectroChemical Honing process is mostly employed for better surface finish, accuracy and economic aspects too.
An ElectroChemical Honing Process consists of a tool, non conducting abrasive honing stones, cylinder and an electrolyte. It has a negative pole, a positive pole, electrolyte and a tool.
In this process, the tool inside the cylindrical parts moves in the longitudinal as well as rotational direction.To obtain uniform flow, the electrolyte is feeded to the tool under pressure through the holes. The abrasive honing stones are pushed forward to move in the slots under equal pressure in all directions.These stones help to assist the electrochemical action and also to scratch the left over unfinished surfaces. Thus, a clean finished surface is obtained. If the shape of the work piece is tapered or wavy, the stones cut all the high areas and eliminate the geometric error.
In conventional honing process, the abrasives used are self dressed. There is a reduction in stock removal when the stones are glazed or rubbed. If the abrasives are dressed quickly then the process becomes more economical. Hence the abrasives are used properly in the operation.
In an electrochemical honing process, in order to obtain better accuracy, the size of the tolerance on the diameter can be provided at 0.01 mm and roundness can be maintained at lesser than 0.05 mm. It provides the surface roughness in the range of 0.1 microns to 0.5 microns. To attain a specified roughness on the work surface, the abrasive honing stones are required to keep on the work for a few seconds after the power is cut off. The surface finish of the electrochemical honing process obtained is mostly based up on the following terms.
1. Size of the abrasive grains.
2. Speed of the rotation and reciprocation.
3. Duration of the run out period.
Advantages of Electorchemical Honing process-
1.ElectroChemical Honing process enhances the material removal rate specifically for harder materials.
2. There is no presence of burrs on the finished surfaces.
3. ElectroChemical Honing process requires minimum amount of work pressure on the tool and the work piece.
4. ElectroChemical Honing process reduces the noise level and distortion while honing thin walled tubes.
5. ElectroChemical Honing process increases the accuracy without damaging the materials due to the provision of cooling medium.
Applications of ElectroChemical Honing process-
1. ElectroChemical Honing process is used for machining small size materials with greater accuracy.
2. ElectroChemical Honing process is applicable for the cylindrical components where truing operation is performed on the interior surfaces.
This is all about ElectroChemical Honing process.
In the next post, you will know about ElectroChemical Deburring and its applications with advantages and disadvantages.