[论文设计]h型钢孔型设计技术

H型钢孔型设计技术摘要介绍了国内第1条全套引进的大H型钢生产线的孔型设计步骤、方法及主要工艺技术参数的选取，重点介绍了连铸异型坯孔型设计的特点，万能水平辊及轧边机轧辊主要尺寸的确定，以及串列可逆连轧式万能轧机压下规程的制定。关键词H型钢；孔型设计；压下规程THEPASSDESIGNTECHNIQUEFORHBEAMABSTRACTTHEPASSDESIGNSTEPS,METHODANDTECHNOLOGYPARAMETERSCHOICEFORLARGEHBEAMPRODUCTIONLINEWHICHISTHEFIRSTWHOLELINEIMPORTEDAREINTRODUCEDTHECHARACTERISTICSOFPASSDESIGNOFCONTINUOUSCASTINGBEAMBLANK,CALCULATIONROLLDIMENSIONOFROUGHINGANDEDGINGMILL,MAKINGREDUCTIONSCHEDULEOFUNIVERSALTANDEMMILLSAREESPECIALLYINTRODUCEDKEYWORDSHBEAMPASSDESIGNREDUCTIONSCHEDULE1前言目前H型钢的孔型设计技术多为试验室的研究成果；通过对引进的大H型钢生产线的生产实践，对H型钢孔型设计技术有一些体会。下面将孔型设计的经验方法和步骤予以介绍。2二辊开坯机的孔型设计在生产H型钢及其它型钢的组合式轧机上，一般设二辊开坯机，通常先开坯再送UEU机组。其孔型设计主要取决于所轧H型钢的品种、规格及采用的坯料。马钢H型钢厂采用2种连铸异型坯G708G80G80G709G26G24G19G104G23G24G19G10412G19、G24G19G19G104G22G19G19G10412G19。在轧制H型钢G7114，一般G1363用开G2487工G4395型，G2528G7114用G12447轧孔型，G16277G32821。G32821开坯机G18209辊G328221进万能孔型前的开坯机最终道次形状设计以G32822、G3282G22为G1375，G7693G6466万能轧机平G3355G5322G1292G13007数G994G5647轧制G17959G8437G81，可G8726G1998G5647的G5322G1292G13007数G708G11468对G14157G7507G13792G16340G709G32822成品尺寸G3282G22开坯机G7380G13468G17959G8437G5430G10378尺寸G172A1G32G11G172A2G12A3G11013G8504可G8726G5483G16825G17959G8437的G14157G7507G13776G13548G2414G5242G55A4G32G172A1G104G87A4G55A5G32G172A1G104G87A5G104G7081G171G7941G17G24G709G58A6G32G58G16G112G794G24G12其G1025，平G3355G5322G1292G13007数可G7693G6466H型钢G14157G7507G20652G5242G75取1G171G24G7941G17G22G22G708大规格取下G19492，G4579规格取上G19492G709。通常，内G1403G3733G7024G5242取1G19G8G7942G24G8，G3818G1403G3733G7024G5242取G24G8G7941G24G8，G1186G13792可G8726G5483G16825G17959G8437G14157G7507G5647G20652G5242H；G13776G13548G20652G5242G37G32G69G14G24G794G22G19G11G80G80G12。22在开坯机上异型坯轧制种类分析G7693G6466G993G2528的异型坯及G11468G5224的H型钢产品规格，G9397G17287上G17860开坯机G7380G13468G17959G8437G5430G10378尺寸，在二辊开坯机上有以下G1972种轧制G5785G1929，G16277G3282G23。G3282G23开坯机上异型坯轧制种G12879G68G12G7643G1946异型坯轧制G84G69G12G5322G19283G14157G7507G20652G5242轧制G84G70G12G1955G4579G14157G7507G20652G5242轧制G84G71G12G1955G4579G13776G13548G20652G5242轧制1G16异型坯G842G16H型钢G84G22G16二辊开坯机G7380G13468轧G1226G84G23G16G12447轧G2530轧G12262G172G171G7643G1946异型坯的轧制轧制G7114G2494进G15904G14157G7507压下和G4649G4497G2476G5430G2375可G5483G2052所G19668的二辊开坯机的G7380G13468轧G1226，G16277G3282G23G68。2G172G172G5322G19283G14157G7507G20652G5242的轧制G20330先经G14521G5190G17959G8437工G4395G5430孔，G5322G1292G14157G7507内G20652和G5647G20652，G1363G1055G17810G2052所G19668工G4395G5430轧G1226，G16277G3282G23G69。2G172G17G22G1955G4579G14157G7507G20652G5242轧制G20330先将异型坯在G12677G5430孔G1025G12447压，G1363G14157G7507内G4497G1955G4579，G1363G1055G17810G2052所G19668工G4395G5430轧G1226，G16277G3282G23G70。轧制G1025G14157G7507G2414G5242G3698G2164G18339G6365G12447轧压下G18339的2G19G8G7942G24G8计。2G172G17G23G1955G4579异型坯G13776G13548G20652G5242的轧制用异型坯轧制G12376G13548H型钢G7114，要对G13776G13548G20652G5242进G15904大G5145G5242压下，G16277G3282G23G71。开坯机G6227G2475G17751大G2476G5430G18339，以G1363异型坯G17810G2052G1391UEU机组轧制的工G4395G5430尺寸。3万能轧机孔型设计31万能轧制方式G993G2528的产品规格和生产条G1226，有G993G2528的轧制方式。马钢采用了串列可逆连轧方式，G2375开坯G2530的轧G1226先在G22机G7562组成的万能G12907轧UEU连轧机组G1025G5460G17832轧制，G7380G2530在万能G12946轧UG41机G7562G1025轧1G17959G1998成品。G17837种方式可G1955G4581轧制G17959G8437，G6564G20652生产能G2159。32万能轧机U和轧边机E的孔型设计G22G172G171成品孔型其孔型设计主要G7171确定H型钢边部内G1403间距，G2375UG41孔型水平辊G4497G5242G58A7，G16277G3282G24G68。为G6564G20652轧辊寿命，确定轧辊G4497G5242G7114还G5224考虑G14157G7507G20652G5242和G13776G13548G2414G5242方向上的公差G58A7G32G708G75G162G104G87A5G14A8G16A9G709G104G7081G17G19G19G24G7941G17G191G19G709式G1025，A8为G14157G7507G20652G5242上的正偏差；A9为G13776G13548G2414G5242上的负偏差。轧辊G1403G3733G7024G5242一般取G19G172G24。G22G172G172万能G12907轧孔型其孔型设计主要G7171确定水平辊G4497G5242G58。通常，G58A7G16G58G32G112G794G24G12G80G80。轧制G4579规格H型钢G7114，取下G19492。轧辊G1403G3733G7024G5242取G24，G16277G3282G24G69G709。G3282G24万能轧机轧辊G68G12万能G12946轧机轧辊；G69G12万能G12907轧机轧辊G22G172G17G22轧边机孔型设计轧边机孔型的水平辊G4497G5242G58A10G32G58,或G58A10G32G58G16G11G19G17G24G7941G17G19G12G80G80；其G1403G3733G7024G5242G994G11468对G5224的万能G12907轧机G1403G3733G7024G5242G11468G2528；轧边机孔型的槽底G7024面G5224G994G1403G3733夹角为9G19，如G32826所示。轧边机孔型深G5242G75A10可用下式确定G75A10G32G11G69G16RG16SG1042G12/2G32826轧边机示意G3282式G1025，G69为成品热G10378态下的边G20652；R为G13776G13548G4497G5242正偏差；S为轧G1226腰部G994水平辊G1055间的间隙，一般取G19G17G24G794G24G80G80。为了避免水平辊G994轧G1226腰部G1055间的接触，有G7114将轧边机孔型的上下水平辊车成G32826所示的虚线部分，其SG32G24G80G80。G7693G6466上G17860方法可完成所有U和E孔型的设计，然G2530制定UEU机组的压下规程。33UEU机组压下规程的制定制定规程G7114，一般G5224G1363G13776G13548压下G13007数A11大于腰部压下G13007数A12。通常G84G12946轧机UG41的压下G13007数可取1G17G19G24G7941G171。其余G17959G8437可取1G171G7941G17G24。轧G1226在U孔型G1025轧制G7114，轧G1226的边G20652会有G2476化，轧G1226边部在U孔型轧制G7114的G3698G19283G18339G37A13A14A15A16为自然G3698G19283G18339G37G87G994强迫G3698G19283G18339G37EG87G1055和A14A15A16。G1186UG17959G8437G2052UG17959G8437G7114，轧G1226边部的G37A11为G37A11G32G69A17G11G69A17G104RA18G12A19A0A15G104G87/G11G69A17A15G14G87A17G104G87A19G12式G1025，G87G32G87A17G16G87A19,G87A17、G871分别为G13776G13548轧前G2414G5242G994轧G2530G2414G5242G709；G69A17为G13776G13548轧前G4497G5242；RA18为G12447辊半径。G1186EG17959G8437G2052UG17959G8437G7114，轧G1226边部除自然G3698G19283G18339G3818，G11013于轧G1226边部在EG17959G8437G1025，边部附近有局部G3698G2414，因G8504在UG17959G8437G1025轧制G7114，轧G1226边端处有强迫G3698G19283G18339A14A21A16G37A10A11G32KG104G75A10G104G87A17/G172式G1025，K为G13007数，一般取G19G17G24G794G19G17G26；G172为轧G1226在U孔型G1025的G5322G1292G13007数；G75A10为轧G1226在E孔型G1025的G5647边G20652压下G18339。G7693G6466上G17860原则，可确定G1998UEU机组各G17959G8437的轧G1226尺寸及压下规程。4孔型及规程的应用以H6G19G19G80G80G104G22G19G19G80G80G10412G80G80G1042G19G80G80H型钢为G1375，其生产G1025所用的孔型设计及压下规程如下。41开坯机孔型及压下规程开坯机孔型G16277G3282G26，其压下规程G16277表1。G3282G26开坯机孔型及G18209辊G3282表1开坯机压下规程G17959G8437孔型编号翻钢编号截面尺寸辊缝/G80G80工作辊径/G80G80转速/RA22G80IG81A9A19轧制速G5242/G80A22SA9A19咬入速G5242/G80A22SA9A19轧G1226G19283G5242/G80G14157G7507G2414G5242/G80G80G13776G13548G2414G5242/G80G80G14157G7507G20652G5242/G80G80截面面积/G80G80A15面缩率/G8G1912G19G23G24G19G26G24G1916G198G19G1911G17G19121G23G19G232G19G26G26G191G24G19G23G19G196G17912G191G19G19G24G22G23G1722G17G192G17G1911G17G26221G19G19G228G19G26G26G191G22G24G19G19G1911G17G238G191G192G24G22G22G17G242G17G192G17G191G22G17G19G2228G24G226G24G26G26G1912G22G23G24G198G1766G241G19G23G19G226G17G262G17G242G17G191G23G172G232G26G19G22G24G19G26G26G191119G19G199G17G23G24G191G19G24G24G226G1722G17G242G17G191G24G17G26G24G221G26G19G22G24G19G26G24G19111G19G19G19G19G178G24G24G1998G19G238G17G26G22G17G192G17G191G24G178611G248G2228G268G249G26G19G19G1912G176G2281G19G266G23G23G17G22G22G17G242G17G1918G171G261G24G19G222G19G268G249G196G24G196G17G24G22G191G198G24G242G178G22G17G242G17G1919G17G23注规格尺寸G708G80G80G709JISG2488G104G22G19G19G10412G1042G19，钢种QG22G23G24，开轧温G524212G19G19，坯料尺寸G708G80G80G709G26G24G19G104G23G24G19G10412G19，G19283G524211G17G19G80。42万能轧机压下规程万能轧机压下规程G16277表2。表2万能轧机压下规程G17959G8437机G7562G12879型G14157G7507G2414G5242G14157G7507G11468对G13776G13548G2414G5242G14157G7507G11468对轧边机辊G14157G7507G20652G5242截面面积/G80G80A15工作辊直径轧制速G5242咬入速G5242/G80G80压下G18339/G8/G80G80压下G18339/G8缝/G80G80/G80G80/G80G80/G80A22SA9A19/G80A22SA9A191U1G236G17G24G26G17G191G19G19G17G262G172G26G26G269161G221G23G19G192G17G24G192G17G19G191EG24G23G171G26G26G269161G226G26G192G17G2462G17G19G242U2G231G1781G19G17192G17G198G176G266G198G22G24111G23G19G192G17G26G232G1719G22U2G226G17911G17G26G269G1791G22G172G26G226G26G221G23G261G23G19G19G23G172G192G17G19G19G22EG23G24G17G19G26G226G26G221G23G266G26G19G23G17G2392G171G23G23U1G222G17G2312G17269G1711G22G17G24G261G236G22G26921G23G19G19G23G178G222G17G22G19G24U128G17G2412G172G249G1781G22G17G24696G24G24G26G2421G23G19G19G24G17G19G192G17G19G19G24EG229G171696G24G24G26G2426G26G19G24G17G22G242G171G236U22G24G17111G179G241G1781G22G17G2368G19G238G19G1911G23G19G24G178G192G17G222G26U222G17111G179G23G23G17G261G22G17G26666G2319G24G261G23G19G19G24G17G19G192G17G19G19G26EG22G22G17G19666G2319G24G266G26G19G24G17G22G242G171G238U119G17G2411G17G26G228G17G261G22G17G236G24G22G2261G24G261G23G19G19G24G178G192G17G2229U11G26G17G2211G17G22G22G22G1761G22G1726G23G22G2218G24G231G23G19G19G24G17G19G192G17G19G199E2G26G17G246G23G22G2218G24G236G26G19G24G17G2262G171G231G19U21G24G17G2311G17G1929G17G2212G1786G22G232G268G19G221G23G19G19G24G17G26G222G172911U21G22G1799G17G262G24G17612G17662G262G23G26G19G221G23G19G19G24G17G19G192G17G19G1911E2G22G17G1962G262G23G26G19G226G26G19G24G17282G171112U112G1769G17G2222G17G2611G17G22621222G24G261G23G19G19G24G17G24G262G172G221G22U111G179G24G1762G19G17G268G17861G262G19G22G2381G23G19G19G24G17G192G17G191G22E18G17G1961G262G19G22G2386G26G19G24G17212G17G1981G23U21