The principle of setting constant pressure in honing pipe

- Sep 09, 2019-

In the detachment cutting stage of the honing pipe processing, since the hole wall is rough at the beginning of the constant pressure honing, the contact area between the oil stone and the hole wall is small, the contact pressure is large, and the convex portion of the hole wall is quickly worn away. However, due to the high contact pressure on the surface of the oil stone and the wear of the oil-and-binder binder by the chips, the bonding strength between the abrasive particles and the binder is reduced. Therefore, some of the abrasive grains fall off under the action of the cutting pressure, and the surface of the oil stone is exposed. Abrasive grain, this is the oil stone self-sharp.


In the crushing cutting stage, as the honing progresses, the surface of the hole becomes more and more light, the contact area with the oil stone becomes larger and larger, the contact pressure per unit area decreases, and the cutting efficiency decreases. At the same time, the cut chips are small and fine, and the wear of these chips on the adhesive is also small. Therefore, the oil stone abrasive grains are rarely peeled off, and the grinding is not performed by the new abrasive grains but by the abrasive grain ends. Therefore, the end of the abrasive grain is very heavy, and the abrasive grain is easily broken and broken to form a new cutting edge. When the honing continues, the contact area between the surface of the oil stone and the hole is getting larger and larger, and the fine chips accumulating between the oil stone and the hole wall are not easily discharged, causing the oil stone to become clogged and become smooth. Therefore, the stone cutting ability is low, which is equivalent to polishing. If the honing is continued and the oil stone is clogged and the cohesive blockage occurs, the oil stone loses its cutting ability and is severely heated, and the accuracy and surface roughness of the hole are affected. At this point, the honing should be ended as soon as possible

Under normal circumstances, there will be a little bit of small holes on the surface. These holes are mainly caused by hot rolling of the material during the processing. If the surface temperature of the part is high, the part will produce pores and thus the surface of the part. Leave a lot of pitting.


In response to this phenomenon, we must choose a pipe with a small degree of corrosion, and the inner wall of the pipe should be as thick as possible. Such a hot-rolled pipe can reduce the generation of pores and increase the production quality of the steel pipe. There are some pitting and stomata on the surface of the pipe, which has some relationship with the defects of the pipe itself. We should try not to have the problems caused by the pipe itself, try to further process the pipe, reduce the occurrence of defects such as pores and pitting, and increase the production of the pipe. Efficiency and quality.