Affecting large diameter seamless uniform quenching factor

There are currently seamless quench tank water quenching processes and external water quenching tank.

Tank water quenching the easiest way is to dip quenching; but easy to make steel upper and lower parts of the cooling rate is inconsistent, pipe bending. The application of external water quenching trough the more successful is the "while rotating the pipe for steel pipe inner surface axial water, water quenching the outer surface layer flow," the water quenching heat treatment process. Comparison dip quenching, quenching to add the axial injection dip, spray plus axially outer laminar jet injection and to add the axial injection cooling methods such as cooling capacity of the outer tube and the inner surface of the laminar jet cooling capacity axial injection process strong quenching efficiency. If accompanied by pipe rotation system that allows uniform cooling pipe in the circumferential direction and cooling minimal deformation. Steel inner and outer surface cooling in the form of different, often cause uneven cooling pipe, resulting in deformation. Produced within the axial injection direction along the length of pipe uneven cooling water through the partial adjustment layers to make up the amount given. Large diameter seamless mild steel pipe quenching, the factors that most influence the pipe diameter, pipe rotation speed and water wetting angle on steel radial cooling uniformity.