Process of a small wire precision rolling mill

The finishing process is an important link in the production of section steel, and the level of the device directly affects the quality of the product. Therefore, the continuous and automatic finishing equipment is an important factor in determining the small precision rolling mill machine. The finishing equipment of the small rolling mill mainly has many aspects. One is the continuous fixed-length shearing unit.
Small wire rolling mills all adopt new technologies of long-length cooling, long-length straightening and cutting in cold state. The continuous fixed-length shear unit is composed of a set of automatic compact multi-roller straightening machine, flying shears and baling equipment, etc., which are arranged at the rear of the output roller table of the cooling bed. – Stop flying shears and special clamping device for cutting precision.

The second is the cooling bed equipment. The small wire rolling machine all use the stepping rack cooling bed. The input roller table of the cooling bed, the lifting brake plate and the steel dividing device ensure the smooth transportation of the rolling piece, accurate positioning and stable drop on the straight plate in turn. . At present, some computer-aided design has been used to optimize the shape of the rack, the straight plate and the length of the rack, so that the shape of the slot can be adapted to various sections of steel, and uniform cooling and deformation can be obtained.

For bars, a new type of fast cooling device has been developed, because the traditional stepping rack cooling bed not only has a limited cooling speed, but also has intermittent pauses in the transfer process of each step, which makes the heat medium in the forced cooling process not uniform. ground around the bar to dissipate heat.

The third is high-speed cutting head and tail scissors. A microprocessor controls the speed of the commutator to match the position of the scissors to ensure the accurate setting of the cutting head length. Due to the large dimensional tolerance of the head and tail of the coil and the uneven mechanical performance indicators, it is especially necessary to cut the head and tail of the special steel coil, and it is also beneficial to the laying machine. In this way, the trimming process is omitted on the conveying and cooling line, which improves the performance of the coil. Coil quality and save personnel.