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1、本科毕业设计题目:(plOOmm热轧无缝钢管定径机设计在城市建设和机械产品生产制造过程中热轧无缝钢管发挥了关键作用，因此在广泛的市场需求驱动下，热轧无缝钢管生产加工技术得到快速发展。热轧无缝钢管生产工艺是指管坯在结晶温度以上时进行轧制定径的生产过程，在这个过程屮，由于其耗能低,产品性能特点较好，已被广泛应用。热轧无缝钢管生产技术经过这么多年的发展已经逐渐成熟，应用也比较广，目前在国内外大多数无缝钢管生产厂家都采用热轧工艺。随着时代的发展和技术的进步，一些新设备逐渐发展并运用到热轧无缝钢管牛产过程中来，提高无缝钢管轧制质量，推动其工艺的不断发展。热
2、轧轧制无缝钢管生产流程主要包括圆管坯、环形加热、二车昆斜轧穿孔、连轧或挤压、脱管、定（减）径、冷却、矫直。热轧无缝钢管生产过程中以穿孔、轧管、定径（减径）为主要变形工序。三个工序所用的设备分别为穿孔机、轧管机、定（减）径机。本设计主要是对定（减）径机作设计、计算。主要内容：传动轴的设计计算、直齿锥齿轮的设计计算、轧车昆的设计计算、其他零件的选取。关键词：三幅定径机；轧制；设计计算AbstractHot-rolledseamlesssteelpipeinthecityconstructionandmachineryproductsintheprod
3、uctionandmanufacturingprocesshaveplayedapivotalrole,sointhebroadmarketdemanddriven,hot-rolledseamlesssteelpipeproductionandprocessingtechnologyhasbeenrapiddevelopment.Hot-rolledseamlesssteelpipeproductionprocessisthemetalabovethecrystallizationtemperatureoftherollingsizingpro
4、ductionprocess,becauseofitslowenergyconsumption,productperformancecharacteristicsofavarietyofgoodandhasbeenwidelyused.Hot-rolledseamlesssteelpipeproductiontechnologyafteryearsofdevelopmenthasgraduallymatured,hasalsobeenwidelypromotedandapplied,athomeandabroadanumberofseamless
5、steelpipemanufacturers,mostoftheuseofhot-rolledprocess.Withthedevelopmentofthetimesandtheprogressoftechnology,somenewequipmentgraduallydevelopedandappliedtothehot-rolledseamlesssteelpipeproductionprocesstoimprovethequalityofseamlesssteelpiperolling,andpromotethecontinuousdeve
6、lopmentofitstechnology.Hotrollingrollingpipeproductionprocessmainlyincludesroundtube,heating,perforation,threerolling,rollingorextrusion,detaching,sizing(reducing),cooling,straightening,waterpressuretest.Generallyintheproductionprocesstoperforation,rolling,sizing(reducingdiam
7、eter)asthemaindeformationprocess.Thedesignismainlyfortheset(minus)diametermachineforthedesign,calculation.Themaincontent:driveshaftdesignandcalculation,straightbevelgeardesignandcalculation,theselectionofotherparts.Keywords:Three-rollsizingmachinerollingdesigncalculation目录绪论2
8、1.热轧无缝钢管生产简介32.总体方案62.1轧辗机架的确定62.2传动方式72.3机架数确定82.4轧制力、轧制力矩82.5总功率的验
