Вялікая печ супраціву тыпу ямы

Large pit type resistance furnaces are generally used for heat treatment of large-diameter workpieces and large-sized annular workpieces. They are suitable for annealing, quenching, and tempering heat treatment of extra-long rods and shafts. The deformation of vertically placed or mounted workpieces is small. Large pit-type furnaces or deep pit furnaces are generally insulated by full-fiber furnace linings. Since large pit-type furnaces are very large in depth and diameter, in order to ensure uniform temperature at each point in the working area of the furnace, especially to reduce the temperature difference in the upper and lower depth directions, special heating elements are designed for such pit-type furnaces. They are not only professionally made with upper and lower multi-section partitions, but also each section is independently controlled with high precision by a microcomputer program. The lining is insulated and energy-saving, and the empty furnace loss is small, saving 30-50% of electricity year-on-year. Large pit-type furnaces and deep pit furnaces can be used for high-temperature, Сярэдняя тэмпература і нізкатэмпературная праца і могуць быць выкарыстаны для адпалу, тушэння, загартоўвання і іншых цеплавых ачышчальных мэтаў для металічных матэрыялаў і механічных дэталяў, такіх як сплава, сталь высокага храма, а таксама сталь высокай мангаўскай сталі . Дыяметр вялікай печы, можа дасягаць 6 метраў, і глыбіня глыбокай печы ямы можа дасягаць 27 метраў.}} печы, якая можа дасягаць 6 метраў, і глыбіня глыбокай печ-печ-печ-печ-печы, якая дасягае 27 метраў {28}