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42results about How to "Ensure longevity" patented technology

Hot spraying metal ceramic powder for stove roller surface coatings

The invention relates to a furnace roller surface coating, in particular to a hot-spraying metal ceramic powder used for the furnace roller surface coating and mainly aiming at solving the technical problem that the anti-burl and wear-resistant capability of the existing coating can be reduced when a large quantity of high-strength steel plates are manufactured. The invention has the technical proposal that the hot-spraying metal ceramic powder used for the furnace roller surface coating consists of alloy powders and ceramic powders; the alloy powder is an alloy powder containing M, Cr, Al, Y and Ta; the ceramic powder consists of powders of ZrB2 and Cr3C2; a weight percentage of the alloy powder and the ceramic powder is that the alloy powder accounts to 89 to 75 percentage and the ceramic powder accounts to 11 to 25 percentage. The M, Cr, Al, Y and Ta alloy powder, against a gross weight of the metal ceramic powder, contains 13 to 25 percentage of Cr, 3 to 10 percentage of Al, 0.1 to 1 percentage of Y and less than 12 percentage of Ta, and the rest is M which is one of Co and Ni. In the ceramic powder, against a gross weight of the metal ceramic powder, the contents of ZrB2 and Cr3C2 are respectively 10 to 20 percentage and 1 to 5 percentage. The invention can be used for the furnace roller surface coating for a steel-strip continuous annealing production line.
Owner:SHANGHAI BAOSTEEL EQUIP MAINTENANCE CO LTD

Method for detecting leakage of cooing walls by using self-made pressurization leakage detector

InactiveCN107586906AExtended service lifeAvoid Shearing HazardsCooling devicesEngineeringIndustrial water
The invention discloses a method for detecting the leakage of cooing walls by using a self-made pressurization leakage detector. The method comprises the following steps: changing the hard connectionof a U-shaped steel pipe of a cooling wall water inlet and outlet tube between a tenth-stage cooling wall and a sixteenth-stage cooling wall of a blast furnace into connection using the flexible connection structure of a quick connector, carrying out pressurization leakage detection layer by layer, using a metal flexible tube quick connector and continuing normal circulation cooling if the leakagedetection result is good in order to carry out connection, carrying out grouting sealing if a leakage detection result is severe damage, and carrying out industrial water poling maintenance if the damage degree is small. The cooling wall pressurization leakage detector comprises a quick connector female buckle, the outside end of the quick connector female buckle is connected with a flange through a flexible tube, the center of the flange is connected with a steel tube with the diameter being 32 mm and the length being 200 mm, a ball valve is arranged at the tail end of the steel tube, the tube body of the middle part of the steel tube is connected with a steel tube with the diameter being 15 mm and the length being 100 mm, and the steel tube is sequentially provided with a ball valve anda pressure gauge from bottom to top.
Owner:XINJIANG BAYI IRON & STEEL

Method for calculating blast momentum in blast furnace production process

InactiveCN108396084AEnsuring Longevity and ProductionEnsure longevityBlast furnace detailsKinetic energyWater vapor
The invention provides a method for calculating the blast momentum in a blast furnace production process, wherein the real-time blast momentum in the blast furnace production process is calculated according to the controllable operation parameters of blast furnaces with different converter capacities during the daily production process, and the controllable operation parameters comprise the coefficient, the blast furnace blast volume GFL, the rich oxygen content FYL in the blast, the blast humidity GFSF, the hot air temperature RFWD, the blast pressure GFYL, the working air port number FKGS, the nitrogen density k1, the oxygen density k2, the gravity acceleration k3, the water vapor density, the Kelvin temperature k5 at the temperature of 0 DEG C, and the atmospheric pressure k6 under thestandard state. According to the present invention, with the method, the reasonable blast momentum can be onlinely and real-timely controlled during the blast furnace production, such that the reasonable daily blast furnace production operation is performed from the formation and control angle of the reasonable coal gas flow inside the furnace hearth so as to ensure the long service life of the blast furnace and the low consumption, stability and smooth operation of the production.
Owner:ANGANG STEEL CO LTD
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