2results about How to "Reduce waste silk" patented technology

The present application belongs to the technical field of metal material pressure processing, in particular to a hot rolling process method of wire rod for dual-phase steel welding wire, which comprises providing an electroslag remelted ingot with PREN value of 42±1; heating the ingot to 1200±10 DEG C and conducting 16 passes of blooming to obtain 120*120mm square billet with single pass reduction of ≤16%; adopting four-section step beam type heating furnace with soaking section temperature of 1180-1210 DEG C and holding time of ≥90min; closing the cooling water of rough rolling and intermediate rolling, adopting 1150 DEG C induction temperature compensation after the Φ76mm rough rolling outlet to make the core-surface temperature difference ≤20 DEG C; sequentially conducting 14 racks of intermediate rolling, 4 racks of pre-precision rolling, 8 racks of precision rolling and 4 racks of reducing diameter, with final rolling speed of 70-75m / s, precision rolling temperature of 1080-1120 DEG C and wire laying temperature of 1100-1180 DEG C; after the wire rod is coiled, cooling to below 550 DEG C at 0.8-1.0 DEG C / s on the delayed Stelmor line, with residence time above 550 DEG C of ≤35s; online solid solution treatment: by setting the process, the problem that the traditional hot rolling process is difficult to meet the temperature and deformation control is solved.

The invention discloses a low-dust-precipitation plastic weaving master batch and a preparation method thereof, and belongs to the technical field of plastic processing aids. According to the master batch disclosed by the invention, a core-shell-halo structure filler and a double-effect additive system are synergistically designed, and metallocene linear low density polyethylene / polybutylene-1 blending carrier resin, a silane coupling agent and an SEBS-g-MAH (Styrene-Ethylene-Butylene-Styrene-g-Maleic Anhydride) compatilizer are matched. According to the preparation process, uniform dispersion and strong interface combination of all the components are realized through the processes of filler vacuum activation, high and low speed segmented mixing and precise temperature control melt extrusion. The dust precipitation amount of the obtained master batch in plastic weaving processing is as low as 0.28-0.45 mg / m and is reduced by 59%-75% compared with that of a traditional master batch, meanwhile, it is guaranteed that the tensile breaking strength of a product is larger than or equal to 3.5 cN / dtex, the elongation at break is larger than or equal to 152%, and the master batch is suitable for the field of plastic weaving products with high requirements for dust control and mechanical properties such as chemical raw material packaging and high-end transportation packaging.