Ways to Choose Proper Grinding Wheel for Rail Grinder

Although the rail cutting grinding wheel is consumable, rail cutting machine itself does not belong to the fixed component parts,  rail cutting grinding wheel's performance has a great influence on the rail cutting effect. The entire process of rail cutting is non-cooling, non-lubricated grinding manner, and must ensure smooth cut surface, no burns, high geometric precision, cutting short time-consuming, therefore, it has made the higher requirements for the grinding wheel . Maximum safe speed , abrasive, grain size and hardness of the grinding wheel are three indicators to select the appropriate grinding wheel. 

Maximum safe speed line 

Under the premise to ensure safe, adopts high allowable speed of the grinding wheel, to maintain a high output gasoline engine speed, it is conducive to fulfill engine power, improve cutting efficiency. 

Abrasive and grain size 

Choose high hardness, toughness abrasive, choose a smaller size, in order to ensure high cutting efficiency, avoid excessive heat during cutting and friction burns cut surface. 

Hardness 

Grinding wheel hardness refers to the firm level of abrasive binding agent grains knot, it means under the action of abrasive grinding force, the ease of falling down from the wheel . Wheel hardness of the main factors affecting the cutting accuracy and cutting efficiency. If the grinding wheel is too hard, the abrasive grinding blunt can not fall off, cutting efficiency is very low, then the grinding wheel under the action of radial force deformation, can not guarantee the accuracy of the rail cut flat surface. Grinding wheel nor too soft, not abrasive blunt when it detached from the wheel, the wheel from wear too fast, cutting efficiency is very low.