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Problems for abrasive belts during grinding

2019-02-20 16:02 Time of views

(1) The belt is too soft

This problem generally occurs on the abrasive belt of animal glue, especially in the rainy season. Animal glue is easy to absorb moisture and is soft and sticky. Therefore, in the rainy season or in wet areas, the belt made of semi-resin or all-resin binder should be used. . It is not advisable to fold the belt packaging material too early to avoid excessive moisture absorption. If there are conditions, it can be dried or dried by the animal glue, but the temperature should not be too high, so as to avoid foaming or coking.

 

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(2) Abrasives are easy to blunt but do not fall off

When the belt is ground, if the contact wheel is too soft, it is easy for the abrasive on the sand surface not to fall off but not sharp. If this happens, you should increase the grinding pressure or replace the harder contact wheel or replace the wider contact wheel of the gear or replace the small diameter contact wheel, or reduce the line speed of the belt, etc., then you can solve The sand surface is not sharp.

(3) easy to remove sand, exposed base

This is mainly because the abrasive particles are not firmly bonded and the abrasive belt should be replaced. Or use a softer contact wheel or a larger diameter contact wheel to increase the radius of curvature of the belt, reduce the grinding pressure, or use a narrower gear contact wheel to increase the linear speed of the belt.

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(4) Blockage of the abrasive layer

Mainly the wrong way to select the belt. If the paint is processed, it is better to use a belt with special coating. For the processing of soft metal materials such as aluminum alloy, stainless steel and copper, it is advisable to use water-resistant abrasive belt which is resistant to lubrication and anti-coolant. In order to resist water and moisture, when grinding wood and its products, it is advisable to use black silicon carbide or brown corundum abrasive.


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