Chinyorwa ichi chinodonongodza zvimhingamupinyi uye matambudziko echinyakareflangeforging process, uye inoita ongororo yakadzama pamusoro pemaitiro ekugadzirisa, kuumba nzira, mashandiro ekuita, kuongorora kwefogi uye post-forging kupisa kurapwa kweflange forgings pamwe chete nedzimwe nyaya.Chinyorwa chinopa hurongwa hwekugadzirisa flange forging process uye inoongorora mabhenefiti akazara echirongwa ichi.Chinyorwa chine huremu hwakati.

Izvo zvinokanganisa uye matambudziko echinyakare flange forging process

Kune mazhinji emabhizinesi ekugadzira, iyo inonyanya kutariswa mukuita kweflange forging iri pakudyara uye kuvandudzwa kwemidziyo yekugadzira, nepo nzira yekuburitsa zvinhu zvisingawanzo kuregererwa.Maererano neongororo iyi, mafekitori mazhinji anowanzo shandisa michina yekuchekeresa kana ichishandiswa, uye mazhinji acho anoshandisa semi-automatic uye automatic band saw.Chiitiko ichi hachingodzikisi zvakanyanya kushanda kweiyo yakaderera zvinhu, asi zvakare ine yakakura nzvimbo yekugara matambudziko uye kuona kucheka kwemvura kusvibisa chiitiko.Muchinyakare flange forging process inowanzo shandiswa mune yakajairwa yakavhurika die forging process, iyo yekugadzira chaiyo yemaitiro iyi yakadzikira, kupfeka uye kubvaruka kwefa ihombe, inotarirwa nehupenyu hwakaderera hwekuforoma uye dzakateedzana yezvakaipa zviitiko zvakadaro. sekufa kusina kururama.

Process optimization yeflange forgings

KUFAMBIRA PROCESS CONTROL

(1) Kudzorwa kwemaitiro esangano.Flange forging inowanzoita martensitic Stainless simbi uye austenitic Stainless simbi sezvishandiso, bepa iri rakasarudza 1Cr18Ni9Ti austenitic Stainless simbi yekugadzira flange.Iyi simbi isina tsvina haipo isotropic heterocrystalline shanduko, kana ichidziya kusvika pa1000 ℃, zvinokwanisika kuwana inofanana yunifomu austenitic sangano.Pashure pacho, kana iyo inopisa simbi isina tsvina yakanyoroveswa nokukurumidza, ipapo sangano reaustenitic rinowanikwa rinogona kuchengetedzwa kusvika kune tembiricha yekamuri.Kana sangano racho richinonoka-kutonhora, zvino zviri nyore kuoneka alpha phase, iyo inoita kuti nyika inopisa yesimbi isina tsvina yepurasitiki yakaderedzwa zvikuru.Simbi isina tsvina zvakare chikonzero chakakosha chekuparadzwa kwe intergranular corrosion, chiitiko chacho chinonyanya kukonzerwa nechizvarwa chekromium carbide mumucheto wezviyo.Nokuda kwechikonzero ichi, chiitiko che carburization chinofanira kudzivirirwa sezvinobvira.
(2) Nyatsoomerera kune zvakatemwa zvekudziya, uye kudzora kunoshanda kwekubiridzira tembiricha.Paunenge uchipisa 1Cr18Ni9Ti austenitic simbi isina tsvina muchoto, pamusoro pechinhu chacho chinowanzoita carburization.Kuti uderedze kuitika kwechiitiko ichi, unofanirwa
Dzivisa kusangana pakati pesimbi isina simbi uye kabhoni-ine zvinhu.Nekuda kwehurombo hwekupisa kwe1Cr18Ni9Ti austenitic simbi isina simbi munzvimbo yakaderera tembiricha, inoda kudziyiswa zvishoma nezvishoma.Iyo chaiyo yekudziya tembiricha kutonga kunofanirwa kuitwa mukunyatso kuteedzera curve muMufananidzo 1.

Figure.1 1Cr18Ni9Ti austenitic Stainless simbi kudziyisa tembiricha kutonga
(3) flange forging operation process control.Chekutanga pane zvese, iyo chaiyo dhizaini inodiwa inofanirwa kunyatso kuteverwa kuti isarudze zvine mutsindo zvigadzirwa zvechinhu.Usati wapisa zvinhu zvinofanira kuva kuongorora kwakazara kwezvinhu pamusoro, kudzivisa kutsemuka, kupeta uye kubatanidzwa mune mbishi uye mamwe matambudziko.Zvadaro, kana uchigadzira, inofanira kusimbiswa kuti irove zvishoma nezvishoma zvinyorwa zvishoma zvishoma, uye zvino kurova zvakasimba apo plastiki yezvinhu inowedzera.Kana uchigumburwa, kumusoro uye nechepasi magumo anofanira kucheneswa kana kuti crimped, uye ipapo chikamu chinofanira kupepetwa uye kurohwa zvakare.

KUGADZIRA METHOD UYE KUFA DESIGN

Kana iyo dhayamita isingapfuure 150mm, butt weld flange inogona kuumbwa nekuvhurika musoro kuumba nzira ine seti yekufa.Sezvinoratidzwa mumufananidzo 2, mune yakavhurika die set nzira, zvinofanirwa kucherechedzwa kuti kureba kweiyo inogumbura isina chinhu uye chiyero chepadhi kufa aperture d inodzorwa zvakanyanya pa 1.5 - 3.0, radius yefa hole fillet R iri. zvakanakisa 0.05d - 0.15d, uye kureba kwefa H ndeye 2mm - 3mm yakaderera pane kureba kwekugadzira kwakakodzera.

Fig. 2 Vhura die set method
Kana iyo dhayamita ichipfuura 150mm, zvinokurudzirwa kusarudza flange butt welding nzira yeflat ring ringing uye extrusion.Sezvinoratidzwa mumufananidzo 3, kureba kweH0 kusina chinhu kunofanira kuva 0.65 (H + h) - 0.8 (H + h) mu flat ring ring flanging method.Iyo chaiyo yekudziya tembiricha kutonga kunofanirwa kuitwa mukunyatso kuteedzera curve muMufananidzo 1.

Fig. 3 Flat ring kutendeuka uye extrusion nzira

PROCESS KUITA UYE FORGING Ongororo

Mupepa iri, nzira yekuveura simbi isina tsvina inoshandiswa uye inosanganiswa nekushandiswa kwekuveura kwakamanikidzika kuitira kuve nechokwadi chemhando yechigadzirwa chemuchinjikwa-chikamu.Panzvimbo pekushandisa yakajairwa yakavhurika die forging forging process, yakavharwa chaiyo yekufogi nzira inogamuchirwa.Iyi nzira haingogadziri kugadzirwa
Iyi nzira haingogadzirisi kururamisa kwekugadzira, asiwo inobvisa mukana wekufa kwakashata uye inoderedza nzira yekucheka kwemucheto.Iyi nzira haingobvisi kudyiwa kwezvimedu, asi zvakare inobvisa kudikanwa kwemidziyo yekucheka, yekucheka inofa, uye iyo inobatanidzwa kumucheto yekucheka vashandi.Naizvozvo, iyo yakavharwa chaiyo yekuumba maitiro akakosha kwazvo kuchengetedza mutengo uye kugadzirisa kugadzirwa kwakanaka.Zvinoenderana nezvinodiwa, simba rekusimba remagomba akadzika echigadzirwa ichi haafanire kunge ari pasi pe570MPa uye kureba hakufanirwe kunge kuri pasi pe20%.Nekutora sampuli mune yakadzika gomba madziro ukobvu chikamu kugadzira test bar uye kuita tensile bvunzo bvunzo, tinogona kuwana kuti tensile simba rekugadzira i720MPa, goho simba 430MPa, elongation i21.4%, uye chikamu shrinkage i37% .Zvinogona kuonekwa kuti chigadzirwa chinosangana nezvinodiwa.

POST-FORGING HEAT TREATMENT

1Cr18Ni9Ti austenitic Stainless simbi flange mushure mekugadzira, teerera zvakanyanya kutaridzika kweiyo intergranular corrosion phenomenon, uye kuvandudza mapurasitiki ezvinyorwa zvakanyanya sezvinobvira, kuderedza kana kutobvisa dambudziko rekuoma kwebasa.Kuti uwane yakanaka corrosion kuramba, iyo yekugadzira flange inofanirwa kuve inoshanda kupisa kupisa, nekuda kweichi chinangwa, mafogiji anofanirwa kuve akasimba mhinduro kurapwa.Zvichienderana nekuongorora kuri pamusoro, mafogi anofanirwa kupiswa kuitira kuti ma carbides ese anyungudiswe kuita austenite kana tembiricha iri pakati pe1050 ° C - 1070 ° C.Pakarepo mushure mezvo, chigadzirwa chinoguma chinotonhora nekukurumidza kuti uwane imwe-phase austenite chimiro.Nekuda kweizvozvo, iyo kusagadzikana corrosion kuramba uye kuramba kune crystalline corrosion ye forgings inovandudzwa zvakanyanya.Muchiitiko ichi, kurapwa kwekupisa kwefogi kwakasarudzwa kuti kuitwe kuburikidza nekushandisa forging tsvina kupisa kupisa.Sezvo forging tsvina kupisa quenching ari mukuru-tembiricha deformation quenching, ayo kana zvichienzaniswa kwakajairika tempering, hazvidi chete kudziyisa zvinodiwa quenching uye quenching midziyo uye chokuita opareta configuration zvinodiwa, asiwo kuita forgings anogadzirwa uchishandisa muitiro uyu zvakawanda. mhando yepamusoro.

Comprehensive benefit analysis

Iko kushandiswa kweiyo yakagadziridzwa maitiro ekugadzira flange forgings zvinobudirira kudzikisa machining mvumo uye kufa kutsetseka kwefogi, kuchengetedza zvigadzirwa kusvika pamwero wakati.Kushandiswa kwesaha blade uye kucheka mvura kunoderera mukuita kwekugadzira, izvo zvinoderedza zvakanyanya kushandiswa kwezvinhu.Nekutanga kwekugadzira tsvina yekupisa kupisa nzira, kubvisa simba rinodiwa pakupisa kwekupisa.

Mhedziso

Mukuita kugadzira flange forgings, izvo chaizvo zvinodikanwa zvinofanirwa kutorwa sekutanga, zvakasanganiswa nesainzi yemazuva ano uye tekinoroji yekuvandudza nzira yechinyakare yekuumba uye kukwidziridza chirongwa chekugadzira.