Titanium rod barrel burnishing is to grind the parts and abrasives in dilute acid or dilute alkali with emulsifier( corrosion inhibitor) and follow the rotation of the drum to obtain a bright appearance. It is suitable for small parts and parts that are difficult to be polished. Correctly raising the roller burnishing standard can increase productivity and quality.

(1) The shape of the barrel

The shape of the roller is round, hexagonal and octagonal, etc. The polygonal shape has the best practicality during the period, because the tumbling parts are easy to change of collision is increased, the grinding is uniform, and the efficiency is high, which can shorten the rolling time.

(2) The choice of the barrel

The diameter is 50-100mm, and the length varies with the number of cells. The length of the one grid roller is 600-800mm. The length of the two grid roller is 800-1500mm. The larger one is usually better,because the parts are subjected to greater pressure and friction in the roller, so the cutting volume is also large. But for those parts that are compressed and easily deformed.a small roller can be used and the length of the roller can be increased.

(3) The material of the barrel

The rotation speed of the barrel is proportional to the amount of scraped parts within a certain range. However, when the speed exceeds 45R/MIN, it drops instead. Because when the speed is too fast, the centrifugal force of the parts in the barrel increases, so that the friction is reduced.

(4) Abrasives and solutions for roller burnishing

Abrasives for rolling include pumice, quartz, granite skin angles, shells, iron filings and ceramic fragments. The size of the abrasive particles should be greater than or equal to each hole of the part, and the amount of content in the barrel is also an important factor affecting the surgace quality of the part. The contents of the barrel usually account for 70% of the barrel volume.

For heavier parts or threaded parts, the loading amount should be controlled at 80%-90%. The solution in the barrel occupies about 95% of the barrel volume( Note: When adding acidic solution to the barrel, you should add water before adding acid to avoid corrosion of parts)

Every once in a while, the concentration of the solution should be checked and replaced, The rolling time should not be too long, otherwise the parts will be damaged. It must be pointed out that rigid or thin-walled parts should be taken out in time after the rolling finish, otherwise it si easy to cause hydrogen seepage or local over-corrosion