How to prolong the life of abrasive belt polishing machine
Production process of abrasive belt polishing machine for belt substrate, abrasive, adhesive and planting density, such as sand requirements are extremely strict, belt life ended prematurely, often caused by improper use, we have the following several typical problems were analyzed.
1 stick cover:
When a layer of metal material covered in grinding grain cutting edge, the occurrence of stick cover. At this time, the abrasive belt surface become shiny, touch slippery feeling. The adhesion of metal materials mainly occurs in the strength of the metal materials, especially in hard and tough materials is more serious.
- grinding pressure is the main reason causing the sticky cover. For the material with high hardness, it is difficult to cut the workpiece, and it is difficult to break the abrasive grains.
Soft contact wheel or pressing plate, even with enough high grinding pressure, that will cause it to collapse seriously, and the abrasive grains are difficult to press into the workpiece.
Belt -- high speed, the abrasive in the grinding area of the lack of time, the starting depth of workpiece thinning, and severe fever.
Lid stick causes is comprehensive, the solving method is a comprehensive. That is to say the appropriate contact wheel or clamp, sufficiently high grinding pressure, the lower the belt speed is a fundamental solution to the problem. Of course, it is necessary to choose the self sharpening abrasive.
2 wear blunt:
In the process of grinding, although the abrasive grains are all there, the sharpness is very poor. This is due to the wear and wear of the cutting edge of the cutting edge, which is called a blunt. Normal blunt is the end of the belt life, obviously we here refers to the grinding blunt "in abrasive has not been consumed mainly belt selection or improper use.
-- soft contact wheel or plate to abrasive workpiece, resulting in smooth edge.
-- lack of grinding pressure also easy to make abrasive and abrasive to blunt, self sharpening.
-- when the workpiece is harder, selection of inappropriate or abrasive belt, high speed, it is difficult to cut the workpiece and blunt.
The belt is not normal wear, seriously affect the service life of the belt, greatly increase the cost of production, and therefore can not be ignored.
3 block:
Jam is in the abrasive cutting edge is not completely blunt prior to grinding grain gap soon cut chips covered and filled, so that the belt cutting the loss of their capacity.
A lot of reasons that cause the clogging, because use, the machined material and the selection of the belt caused by improper:
Contact wheel or plate is too soft, caused by grinding grain difficult to cut into the workpiece being, abrasive belt grinding, machining zone temperature friction and heat, so that the cutting bits "welding" to the belt, causing blockage due of. Solution should be used in the hard contact wheel and press plate, or the use of the peak of the contact wheel and the back plate, but also can be used in small diameter contact wheel, etc..
-- belt speed is too high is also difficult to make abrasive effectively cut into the workpiece, also appears to be blocked and the workpiece burn, at this time, should reduce the belt speed.
By processing material is so soft, such as aluminum, copper and other non-ferrous metal easily caused by abrasive belt surface clogging, the solution should be: the use of sparse vegetation belt; in meet the roughness requirements under the condition of the coarse granularity of abrasive belt. The brittleness of silicon carbide abrasive belt is bigger; with grinding aids, such as the use of lubricants etc..
- easy to plug the smooth processing surface of a material, to this kind of material can use grease and coarse granularity easily cause scratch the belt should be used super coating abrasive belt, the product has good chip removal and anti clogging performance.