In fact, all
Grinding wheel
Divided into soft, soft, hard, hard few. Each is divided into several levels. English by
Soft to hard into
: E,F,G,H,I,J,K,L,M,N,O,P,Q,R
And other. Hard sand wheel Abrasive
Not falling,
Metal shavings mill under easy to stick on the wheel,
Cause surface burns;
Soft abrasive grinding wheel
Easy to fall off, do not burn the workpiece, the grinding wheel consumed faster.



      
We speak of soft wheel, the wheel does not mean that such a soft crystal particles, but rather a strong combination of sand
Of soft,
Easier to fall off,
So that when the sand is ground a little too sharp not to fall off,
Under its new sharp sand
Continue grinding grain, which has been maintained
Abrasive
Sharp, and then a hard material is also a softness
.



  

   
If we use the head-on approach, there will be two-meet, each side of the situation, and the wheel material
Serious slippage occurs between the materials,
No one who approaches,
On the ground does not move.
Soft wheel applies to the amount of feed
Big
/
Large contact surface
/
Hard material
/
Poor heat resistance grinding
.
Hard wheel suitable for feed less
/
Soft material
/
Small ground contact surface of each grinding or narrow field
.



      
Wheel hardness choose the right time,
Grinding process to blunt the abrasive off on their own,
Exposing new sharp
Continue abrasive grinding.
If the selected wheel is too soft,
Not abrasive passivation off prematurely,
Not only increased consumption of the grinding wheel,
But also lose the right wheel shape and machining accuracy;
If the selected wheel too hard,
After the abrasive grains can not be passive and
When off,
Make abrasive grinding wheel surface voids between the debris is blocked,
Resulting in increased grinding force,
Grinding heat gain
More grinding temperature, so that the workpiece deformation even burn, and the surface roughness to improve productivity
decline.





      
Soft material with a hard grinding wheel reason it will not need to go into detail, soft material with a soft grinding wheel is not no,
Is too wasted effort,
Soft material and hard material is greater than the coefficient of friction, the soft sand on the surface of the wheel to fall off more easily,
sand
When grain is also sharp and lost,
No full capacity,
Wheel soon rebuilt,
There may even be more than the wheel
Wear soft material faster situation,
Or grinding does not move appears the phenomenon,
Then the grinding efficiency is greatly reduced,
and so
Then you should use a combination of strong hard wheel. Knowledge binding agent
,
Other articles repeat
.


Generally, when grinding hard materials, grinding wheel hardness should be lower; on the contrary, it should be higher. Non-ferrous metal toughness
Big wheel pore clogging debris easily, generally should not be grinding. To grind, you should choose a softer wheel. Correct
To form grinding and precision grinding,
In order to maintain a good shape accuracy of the grinding wheel,
You should choose harder wheel.
one
Grinding is often used as soft to medium-hard grade level wheel.