Some methods to improve the surface strength of prototype

In some cases, products will bear heavy loading, or there are certain defects on the surface, or there is residual stress, or cannot meet the engineering design requirements; we can have shot peening, pressure, rolling and other methods to improve the surface of the product emphasis. By those methods, the stress of the prototype is reduced; the wear resistance and corrosion resistance of the hand plate can also be effectively improved. The commonly used surface strength improvement methods are as follows.

1.Rolling processing

Roller or ball can be used (quenching and fine grinding are required) to roll the surface of the prototypes at room temperature, improve the original cold and hard layer of the product and the residual compressive stress, and effectively improve its carrying capacity and fatigue strength.

2.Shot peening

It is the use of very fast speed of the ball on the surface of plate, can improve the fatigue strength of parts. The pellet material used can be cast iron. If some work-piece is aluminum material, in order to avoid the problem of corrosion caused by some iron particles above, it is best to use aluminum or glass shot. Shot peening is suitable for some more complex prototype surface strengthening, or cannot be used in other ways to strengthen the case.

3.Diamond pressing

It is a way of using cylindrical or spherical diamond to press the prototype. Through diamond pressing, the surface quality and production efficiency of the work-piece can be improved, and the fatigue strength of the hand plate can be increased.

According to the material of the product, engineering requirements and actual defects of the product, proper process should be selected in order to achieve product surface strength.