47results about How to "Improve the billet rate" patented technology

A rolling cogging manufacturing method for 0Cr17Ni4Cu4Nb ingot casting includes: 1) heating in one heat, cooling steel ingot and keeping temperature for 1.5 hr when entering furnace temperature is less than or equal to 600deg.C; heating steel ingot, keeping temperature for 1 hr when entering furnace temperature is less than or equal to 690deg.C and keeping temperature for 2 hrs with is less than or equal to 60deg.C / h up to 950deg.C, keeping temperature for 4 hrs with is less than or equal to 80deg.C / h up to 1180deg.C and drawing charge with positive and positive and negative face temperature differential is less than or equal to 30deg.C; 2) cogging in one heat, roller preheating with rolling speed is less than or equal to 10 / min, beginning temperature is greater than or equal to 1150deg.C, finishing temperature is greater than or equal to 1050deg.C, drafts is less than or equal to 40mm and rolling passage is less than or equal to 14; 3) heating in second heat and keeping temperature for 1 hr at 1180deg.C; 4) cogging in second heat with beginning temperature is greater than or equal to 1130deg.C, finishing temperature is greater than or equal to 1000deg.C and drafts is less than or equal to 50mm, rapid shearing billet and hot annealing. It achieves low cost, simple process and good quality.

The production process of rolling cogging Cr4Mo4V electroslag steel ingot features the heating in pit heating furnace and cogging in blooming mill to produce 100 mm square bloom. The production process includes heating Cr4Mo4V electroslag steel ingot at 630 deg.c for 90 min, 900 deg.c for 60 min, and 1190 deg.c for 210 min while turning the ingot to make the temperature difference between two opposite sides less than 20 deg.c; and cogging at initial temperature over 1130 deg.c and finishing temperature over 1000 deg.c through 44 gates and final annealing in annealing furnace to eliminate stress. The said production process is simple and has high product quality, raised bloom yield and lowered cost.

The invention provides a beam blank continuous casting secondary cooling zone cooling device, relating to auxiliary device for carrying out cooling treatment on casting blank on the site. The cooling device is composed of a foot roller section cooling mechanism, a zone 1 section A cooling mechanism, a zone 1 section B cooling mechanism and a zone 2 cooling mechanism; wherein the foot roller section cooling mechanism is provided with four pairs of foot roller wide face nozzles and two pairs of foot roller narrow face nozzles, the zone 1 section A cooling mechanism is provided with two pairs of zone 1 section A wide face nozzles and one pair of foot roller narrow face nozzles, the zone 1 section B cooling mechanism is provided with two pairs of zone 1 section B wide face nozzles and one pair of zone 1 section B narrow face nozzles, and the zone 2 cooling mechanism is provided with two zone 2 section wide face nozzles and one pair of zone 2 section narrow face nozzles. The invention has the advantages of simple and reasonable structure and reliable use; casting blank surface heat transfer rule is followed, and utilization of water is reasonable and effective; temperature difference of different parts on cross section of casting blank is reduced, casting blank temperature and structural homogeneity are obviously improved, crack of casting blank can be effectively reduced, quality of casting blank is improved, blank yield is improved, and production is promoted.

The production method of Cr12MoV cogged bloom is characterized by that it adopts the cogging process of "using soaking furnace to heat steel ingot and using cogging mill to roll in two heats": (1) using soaking furnace in one heat: steel ingot weight is less than or equal to 1.5 ton, furnace-feeding temp. is less than or equal to 500 deg.c, heat-insulating time is 2 hr., heating-up speed is less than or equal to 80 deg.C / h; heat-insulating for 4 hr. turning steel ingot and difference in temperature of heat side and cold side is less than or equal to 30 deg.C; (2). using cogging mill to cog in one heat; before rolling, closing cooling water for roll, preheating roll, temp. 150 deg.C, roll speed is less than or equal to 10 rpm; (3). heating in two heats, 1170 deg.C, heat-insulating for 1.5 hr; and (4) cogging in two heats, preheating roll, roll speed is less than and equal to 10 rpm.

The invention provides a high-Mo Ni-based alloy sheet with width larger than or equal to 1000 mm. The alloy comprises components in percentage by weight as follows: 0.006%-0.010% of C, 15.0%-16.5% ofMo, 15.0%-16.5% of Cr, 5.0%-7.0% of Fe, smaller than or equal to 0.05% of Co, 3.0%-4.0% of W, smaller than or equal to 0.10% of V, smaller than or equal to 0.08% of Si, smaller than or equal to 0.8% of Mn, smaller than or equal to 0.01% of P, smaller than or equal to 0.008% of S, 0.10%-0.30% of Al, smaller than or equal to 0.002% of O, 0.001%-0.010% of Mg, 0.001%-0.010% of Ce+La and the balance ofNi and inevitable impurities.

A rolling cogging manufacturing method for high temperature alloy GH1015 includes: 1) heating in one heat, electroslag ingot keeping temperature for 1 hr with entering furnace temperature is less than or equal to 700deg.C, keeping temperature for1 hr with is less than or equal to 60deg.C / h up to 900deg.C, keeping temperature for 3.5 hrs with is less than or equal to 80deg.C / h up to 1180deg.C and drawing charge with positive and negative face temperature differential is less than or equal to 20deg.C; 2) cogging in one heat with preheating temperature of roller 120deg.C and beginning temperature is greater than or equal to 1100deg.C, finishing temperature is greater than or equal to 1000deg.C, roller speed is less than or equal to 20 / min, drafts is less than or equal to 30mm and rolling passage is less than or equal to 15; 3) heating in second heat, keeping temperature for 80 mins at 1170deg.C and drawing charge with positive and negative face temperature differential is less than or equal to 20deg.C; 4) cogging in second heat and roller preheating with beginning temperature is greater than or equal to 1100deg.C, finishing temperature is greater than or equal to 1000deg.C, rolling speed is less than or equal to 20 / min, rolling speed of product passage is less than or equal to 10 / min and drafts 30mm. It achieves low cost, simple process and good quality.

The invention discloses a preparation method of a polymer ceramic dispersant, which is characterized in that polyethylene glycol and maleic anhydride are uniformly mixed and polymerized to obtain a semi-esterification product; the semi-esterification product, vinyl monomer and water are uniformly mixed to carry out free radical polymerization under the inducement of initiating agent so as to obtain the polymer ceramic dispersant. The product prepared by adopting the invention has excellent dispersion dilution effect and grinding-aid effect on the ceramic slurry, improves the billet strength and the billet yield, thus reducing the production cost; meanwhile, the indexes such as the density and the folding resistance strength, etc. of the ceramic product are greatly reinforced. Furthermore,the product can be also used for the dispersion of dye and coating, etc.