| 摘要 |
PURPOSE:To anneal forged products with saving energy by adjusting cooling capacity of a forged product cooling device to make temperature of forged products nearly equal and charging to a heat treatment furnace when annealing forged products utilizing their retaining heat. CONSTITUTION:Many forged products F coming out from a forging machine 1 retain remaining heat of about 1,200 deg.C. While they are carried by a mesh belt type conveyor 2, they are cooled by air sucked from below by rotation of the vane wheel 5 of a cooling device 3 provided with a hood 4. A specified quantity is put in a basket 11, charged in a heat treatment furnace 13 and annealed. In this case, forged products that entered the basket 11 earlier are naturally cooled in the basket and temperature becomes lower than that of forged products that enter later. By adjusting cooling rate by controlling the rotation speed of a motor for rotating the vane wheel, and charging all the forging products in the basket 11 in the heat treatment furnace 13 at nearly equal temperature, all forged products can be annealed by small heating energy. |
