摘要:
The present invention relates to an apparatus for cooling hot steel plate applied for controlled cooling of hot steel plate, obtained by hot rolling, while processing it constrained by constraining rolls and obtaining a steel material excellent and uniform in shape characteristics and provides a method of arranging and setting spray nozzles enabling uniform cooling in a direction perpendicular to processing and provides a method of arranging and setting spray nozzles of a spray cooling apparatus using two or more types of nozzles differing in amounts of water and spray regions to obtain a broad range of adjustment of amounts of water, wherein the spray nozzles are arranged so that a value of an n power of the impact pressures of the cooling water sprayed from the spray on the cooling surface integrated in the processing direction between pairs of constraining rolls becomes within −20% of the highest value in the direction perpendicular to processing, where, 0.05≦n≦0.2
摘要翻译:本发明涉及一种用于冷却热钢板的冷却装置,其通过热轧获得的热钢板的受控冷却,同时加工受到约束辊约束,并获得形状特性优良且均匀的钢材,并提供一种布置方法 并设置喷嘴,使得能够在垂直于加工的方向上均匀地冷却,并且提供了一种使用两种或多种不同水和喷射区域的喷嘴类型的喷嘴来布置和设置喷雾冷却装置的喷嘴的方法,以获得宽范围的调节 的水量,其中所述喷嘴被布置成使得从在所述约束辊对之间的处理方向上整合的冷却表面上的喷雾喷射的冷却水的冲击压力的n倍的值变为-20% 在垂直于加工的方向上具有最高值,其中,0.05 <= n <= 0.2
摘要:
This invention provides a rolling method and a rolling apparatus, for flat-rolled metal materials capable of stably producing flat-rolled metal materials not having, or having extremely little, camber. A rolling method for a-flat-rolled metal material uses rolling equipment including a rolling mill and at least a pair of pinch rolls for clamping a rolled material on the exit side of the rolling mill having a mechanism in which either one, or both, of upper and lower roll assemblies have a mechanism for supporting a work roll by split backup rolls split into at least three segments in an axial direction, the split backup roll group having a construction for supporting both a vertical direction load and a rolling direction load acting on the contacting work roll and each of the split backup rolls independently having a load measuring device.
摘要:
A method of supplying lubricating oil in cold-rolling by emulsion lubrication, characterized by comprising: using a constant (supply efficiency) obtained under conditions of a specific rolling rate, emulsion supply, emulsion concentration, emulsion temperature, plateout length, rolled material width or roll barrel length, rolling load, grade of the rolled material, and type of lubricating oil and oil film thickness at the time of neat lubrication realized under the specific rolling lubrication conditions to estimate the oil film thickness realized by emulsion lubrication under the specific rolling lubrication conditions and controlling at least one of the emulsion supply, emulsion concentration, emulsion temperature, and plateout length so that the estimated oil film thickness matches with the target oil film thickness.
摘要:
The present invention provides a method of supplying lubrication oil in cold rolling for stable rolling without heat scratches or slip and realizing high productivity and improvement of the specific consumption of lubrication oil, that is, a method of supplying lubrication oil in cold rolling for lubricating rolling in cold tandem rolling of metal sheet by supplying a predetermined kind of emulsion lubrication oil comprised of a mixture of rolling oil and water at the rolling stand inlet side from nozzles, the method of supplying lubrication oil in cold rolling characterized by measuring or estimating the pressure in the lubrication nozzle pipe (lubrication nozzle pressure), controlling the lubrication nozzle pressure of any rolling stand where lubrication is liable to become excessive with the predetermined emulsion lubrication oil to 0.5 MPa or more, and, while doing so, supplying the lubrication oil to the roll bite inlet of the stand by direct injection.
摘要:
A yellowing resistant label to be attached to articles of clothing, bedclothes, sundry goods or the like which comprises a fabric base and a porous nylon resin layer formed on the surface of the base, said nylon resin coating composition being prepared by dissolving a nylon resin in a solution of calcium chloride in methanol and adding thereto 5 to 25 PHR of a plasticizer for a nylon resin such as 2-ethylhexyl p-hydroxybenzoate, the label is prepared by applying the nylon resin coating composition onto the fabric base, dipping the coated base into water in order to leach out methanol and calcium chloride from the coating composition and then drying the resultant.
摘要:
A cooling method of a thick-gauge steel plate by spraying water from a plurality of spray nozzles on the top and bottom surfaces of the thick-gauge steel plate conveyed between the adjoining pairs of constraining rolls, each comprising a top roll and bottom roll, constraining and conveying the steel plate so as to efficiently cool the top and bottom surfaces of thick-gauge steel plate to secure symmetry of temperatures of the top and bottom surfaces and uniformity of temperature in the plate width direction and achieve improvement of flatness of thick-gauge steel plate and uniformity of quality.
摘要:
A method of supplying lubricating oil in cold-rolling by emulsion lubrication, characterized by comprising: using a constant (supply efficiency) obtained under conditions of a specific rolling rate, emulsion supply, emulsion concentration, emulsion temperature, plateout length, rolled material width or roll barrel length, rolling load, grade of the rolled material, and type of lubricating oil and oil film thickness at the time of neat lubrication realized under the specific rolling lubrication conditions to estimate the oil film thickness realized by emulsion lubrication under the specific rolling lubrication conditions and controlling at least one of the emulsion supply, emulsion concentration, emulsion temperature, and plateout length so that the estimated oil film thickness matches with the target oil film thickness.
摘要:
A method of supplying lubricating oil in cold-rolling by emulsion lubrication, characterized by comprising: using a constant (supply efficiency) obtained under conditions of a specific rolling rate, emulsion supply, emulsion concentration, emulsion temperature, plateout length, rolled material width or roll barrel length, rolling load, grade of the rolled material, and type of lubricating oil and oil film thickness at the time of neat lubrication realized under the specific rolling lubrication conditions to estimate the oil film thickness realized by emulsion lubrication under the specific rolling lubrication conditions and controlling at least one of the emulsion supply, emulsion concentration, emulsion temperature, and plateout length so that the estimated oil film thickness matches with the target oil film thickness.
摘要:
The present invention relates to an apparatus for cooling a hot steel plate which is processed and constrained by constraining rolls and a method of arranging and setting spray nozzles enabling uniform cooling in a direction perpendicular to processing. In the apparatus and method of the invention, the spray nozzles are arranged so that a value of n power of the impact pressure of the cooling water on the cooling surface integrated in the processing direction between pairs of constraining rolls becomes within −20% of the highest value in the direction perpendicular to processing, where 0.05≦n≦0.2.
摘要:
A method of cooling both surfaces of steel plate, which stably secures precision of cooling control from a start of cooling to an end so as to uniformly cool the top and bottom surfaces of the steel plate and thereby stably secures the steel plate quality and cools the steel plate down to a target temperature with a good precision. The method comprises dividing a steel plate cooling region into at least a spray impact part region and a spray non-impact part region, predicting a heat transfer coefficient for each divided region in advance, computing a predicted temperature history of the steel plate based on this predicted value, and setting and controlling amounts of sprayed coolant on the spray impact part regions by top and bottom surface nozzles.