What are the influencing factors of sand blasting of round tube sandblasting machine?

First, the workpiece surface roughness

Two, sandblasting machine sandblasting strength

Three, sandblasting coverage:

Sand blasting machine cover test: coated with a layer of glaze or fluorescent coating on the surface of the workpiece, according to the process parameters of sand blasting. After one sandblasting, the workpiece is removed and the ratio of coating to surface residue is observed under a microscope (magnifying glass). Such as residual 20%, sandblasting coverage rate of 80%. The residual is only 2%, that is to say, when the coverage rate is 98%, it can be regarded as completely eliminated, that is, the coverage rate is 100%, and it takes a certain amount of time. If the coverage is 400%, it will take four times as long.

Factors affecting coverage include material hardness of parts, blasting diameter, blasting Angle and distance, blasting time and so on. Under the specified sandblasting strength conditions, when the hardness of the parts is lower than or equal to the standard specimen hardness, the coverage rate can reach 100%; On the contrary, retrieval rate will decrease. At the same sandblasting flow rate, the longer the distance between the nozzle and the workpiece, the smaller the sandblasting Angle, the smaller the sandblasting diameter, and the shorter the time to reach the coverage requirements. When sandblasting is strengthened, appropriate size sandblasting, sandblasting Angle and distance should be selected to make sandblasting strength and coverage reach the required value at the same time.

Notes for sandblasting in the process of sandblasting:

When the sandblasting machine for sandblasting operation, in order to ensure that the sandblasting machine uniform sandblasting, in the operation of the sandblasting machine need to correctly operate the sandblasting machine, and in the operation of the sandblasting machine also need to pay attention to the sandblasting machine sandblasting matters, otherwise it is easy to appear uneven sandblasting.

The stability of air source: do not let the sandblasting machine heart failure, the air source compared to the heart of the sandblasting machine is not too much, the size of the air pressure will directly affect the effect and efficiency of sandblasting processing.