Txheej Txheem Ntau Lawm Txheej Txheem Qhia Txog Titanium Thiab Titanium Alloy Forging
1 、 Npaj ntawm ingot
1. Tom qab tau txais cov phiaj xwm ua haujlwm ntau lawm, tus kws tshaj lij kev tsim khoom yuav tsum ua tib zoo saib xyuas ib feem ntawm cov phiaj xwm. Yog tias muaj teeb meem dab tsi, sib txuas lus nrog tus phiaj xwm hauv lub sijhawm. Tom qab paub tseeb tias tsis muaj qhov yuam kev, cov txheej txheem ntau lawm tuaj yeem npaj tau. Thiab qhia rau cov neeg ua haujlwm txheeb rau lub tsev rau khoom kom khaws cov khoom.
2. Raws li GB / 3620.1 titanium thiab titanium alloy qib, tshuaj lom neeg muaj pes tsawg leeg thiab tso cai sib txawv ntawm cov tshuaj lom neeg lub cev (GB / 3620.2) thiab cov kev cai cuam tshuam ntawm cov txheej txheem kev lag luam, cov khoom tau txais cov neeg ua haujlwm yuav tsum tshawb xyuas daim ntawv pov thawj ingot, thiab tshuaj xyuas seb puas yog cov alloy hom, ingot naj npawb, kev qhia tshwj xeeb thiab hnyav yog ua tau nrog cov khoom tiag, thiab mam li hloov cov khoom tom qab kev paub tseeb.
3. Cov qhov yuav tsum tau muab tso rau hauv kev txiav txim thaum lawv pauv mus rau hauv forging rhiav. Cov cim yuav tsum tau muab tso rau hauv txoj haujlwm pom lossis tus lej ingot yuav tsum khij kom meej meej rau ntawm ob qho kawg lossis sab npoo ntawm lub ingot nrog hlau (khij mem)
Ua ntej pub mis, tus kws tshaj lij kev tsim khoom yuav tsum ua tib zoo kawm txog txheej txheem txheej txheem ntawm cov khoom kom paub meej tias nws cov tshuaj lom neeg muaj peev xwm ua tau raws li cov txheej txheem kev qhia ntawm cov khoom. Txwv tsis pub, nws tsis tuaj yeem noj.
5 tom qab lub ingot pauv mus rau qhov chaw ua yeeb yam forging, cov neeg ua hauj lwm rauv taws yuav tsum pleev cov hmoov txheej ua ntej them nyiaj. Thaum txheej txheej, cov ingot yuav tsum tau padded nrog cov ntaub qhwv ntoo lossis qhia cov menyuam, thiab lub impurities thiab roj stains ntawm cov nplaim ingot yuav tsum tau muab ntxuav nrog tus neeg sawv cev tu, thiab tom qab ntawd cov tshuaj tiv thaiv oxidation yuav tsum muaj ntaub ntawv.
6. Thaum pleev xim, tsis txhob siv rau hauv qhov chaw uas tus naj npawb ingot sau, yog li txhawm rau paub meej tias tus lej tus lej yog ua ntej ua ntej them.
Lub tuab ntawm txheej yuav tsum tswj tsis pub dhau 0.2-0.4 hli. Cov txheej yuav tsum ua kom qhuav txhua qhov, uas yog, 24 teev ua ntej thauj khoom.
2 、 Cua Sov
Cov khoom siv cua sov: cov nkev hauv cua sov, cov cua sov ua haujlwm.
2 npaj ua ntej muaj cua sov.
2.1 ua ntej them cov cub tawg, ua tib zoo saib seb puas muaj hom, cov naj npawb, kev qhia tshwj xeeb thiab cov naj npawb ntawm cov khoom tsis tuaj yeem ua raws li daim npav txheej txheem, thiab cov cua sov tuaj yeem thauj khoom tom qab kev paub tseeb.
2.2 cov cuab yeej siv cua sov thiab ntsuas qhov ntsuas kub yuav tsum ua haujlwm nquag, txwv tsis pub lawv siv. Qhov ntsuas qhov ntsuas kub yuav tsum ntsuas ib zaug ib nrab xyoo thiab ntsuas ntau zaus. Txog cov ntaub ntawv tshawb fawb los yog cov khoom lag luam tseem ceeb, lub tshuab cua sov yuav tsum kuaj xyuas ua ntej ntau lawm. Thaum cov cua sov pib siv tom qab rov ua dua lossis kaw lub sijhawm ntev, yuav tsum kuaj xyuas lub tshuab ua kom sov sov. Qhov ntsuas kub ntawm qhov nruab nrab ntawm lub cub tawg yuav tsum raug kuaj xyuas ib zaug ib hlis twg raws li kev ua haujlwm zoo, thiab cov ntaub ntawv yuav tsum ua.
2.3 lub tshuab ua kom sov yuav tsum huv ua ntej them, thiab yuav tsum tsis muaj cov hlau thiab lwm cov khoom tsis yog xim hlau, oxide nplai ntawm cov hlau no thiab lwm yam khoom uas cuam tshuam rau cov cua kub zoo. Qhov saum npoo ntawm ingot yuav tsum huv si thiab tsis muaj roj thiab lwm yam av.
3 、 Forging
1 lub tshuab forging: 2000t hydraulic xovxwm 750 kg cua rauj
2 npaj ua ntej forging
2.1 ua ntej kev tsim khoom, tus neeg teb xov tooj yuav tsum xub kuaj cov cuab yeej ua haujlwm, thiab sim khiav xyuas seb cov cuab yeej ua haujlwm ib txwm ua haujlwm li cas. Yog tias muaj teeb meem dabtsi, tus saib xyuas haujlwm yuav tsum raug ceeb toom los daws nws.
2.2 txhua tus tswvcuab hauv pawg yuav tsum qhia meej txog cov haujlwm ua haujlwm ntawm kev hloov pauv, nkag siab txog cov txheej txheem cov cai ntawm daim npav npav txheej txheem, thiab tsim cov qauv forging ua ntu zus.
2.3 txhua tus tswvcuab yuav tsum npaj cov cuab yeej tsim nyog rau kev tsim khoom raws li lawv lub luag haujlwm. Xws li tongs, pwm, pov, punch, chopper, caliper, tus pas ntsuas, thiab lwm yam.
2.4 rau qee cov ntaub ntawv lossis cov khoom siv me me (cov khoom kub me me poob sai sai), ua ntej forging, hammers, tumblers, xuas nrig ntaus, ntuag thiab lwm yam cuab yeej yuav tsum tau preheated nyob rau hauv qhov kub ntawm 150 ~ 300 ℃ kom ntseeg tau tias lub forging zoo thiab tiv thaiv tej kab nrib pleb.
3. Titanium pas nrig forging
3.1 lub ntsiab forging txheej txheem ntawm bar yog ncab, thiab tag nrho cov txheej txheem forging tuaj yeem muab faib ua qhib qhib forging, nruab nrab (ua tiav ib nrab) forging thiab tiav forging. Thawj lub tshav kub forging ntawm ingot yog hu rau qhib forging, thiab so yog nrab forging thiab tiav lawm forging.
3.2 thaum lub ingot qhib, thawj kauj ruam yog lub teeb forging thiab nrawm forging. Qhov yuav txo tau ntawm ib qho stroke yuav tsum yog qhov me me. Tus ntshiab titanium yuav tsum tsis pub tshaj 80 hli thiab lub alloy yuav tsum tsis pub tshaj 60 hli txhua lub sijhawm. Thaum tag nrho qhov rhuav tshem mus txog 20-30% (forging piv 1.25-1.43), qhov txo qis rau ib leeg tuaj yeem nce ntxiv, 80-100 hli rau titanium ntshiab thiab 60-80 hli rau alloy. Thaum cov deformation yeej ib txwm ua tiav lossis qhov kub yog qhov tsawg heev, qhov deformation yuav tsum maj mam txo kom tsis txhob tawg cov khoom.
3.3 thaum lub sijhawm forging thiab kos duab, qhov pub mis noj (LO) feem ntau yog 0.75 ntawm tus rauj lub taub hau qhov dav (b), uas yog, Lo=0.75b. Piv txwv li, rau 2000t hydraulic xovxwm, yog B=400mm, tom qab ntawd Lo=0.75b=338MM, thiab qhov txo yuav tsum tsis txhob ntau dua 2/3 ntawm qhov pub, uas yog, ho-h=2/3 lo. Txhawm rau kom tsis txhob quav, nws yog ib qho tsim nyog los txhuam, khib nyiab tus txiv neej thiab cuam tshuam rau qhov tawm los. Yog hais tias tus txheej txheem daim npav tsis tas yuav rab ntaj lub taub hau tag nrho, nws feem ntau kho zoo li qub.
3.4 qhov seem yuav tsum tau muab coj los ua thawj zaug hluav taws ntawm cov khoom tiav (cov khoom lag luam tuaj yeem xa tom qab sib tsoo), piv txwv li octagonal lossis kaum ob square billets. Qhov loj yuav tsum tsim nyog, tsis loj dhau los yog tsawg. Yog tias qhov loj me dhau, nws yooj yim rau kev quav thiab tsis tuaj yeem ua tiav cov txheej txheem ntawm tsoo lub voj voog. Yog tias nws tsawg heev, nws tsis tuaj yeem ntsib qhov loj me ntawm cov khoom tiav.
3.5 lub forging ntawm tiav lawm bar tsuas yog round rhuav. Thaum thawj puag ncig tawg, nws yuav tsum tau maj mam nias kom tsis txhob khoov. Rau qhov thib ob, kev txo qis yuav tsum tau nce ntxiv. Txhua lub bar yuav tsum tau nias tsawg kawg peb zaug kom ntseeg tau tias qhov ua siab ntev ntawm lub cheeb sab nraud uas yuav tsum tau ua los ntawm daim npav txheej txheem, thiab cov cua sov ntawm cov seem yuav tsum siv ncaj. Yog hais tias cov khoom siv ntsuas qhov kub qis dhau, tab sis qhov khoov khoov tsis tau raws li qhov ua kom tau, nws tuaj yeem rov kho kom ncaj. Cov cua kub kub ntawm kev ncaj yog feem ntau 150-200 ℃ qis dua theem hloov kub. Lub sijhawm tuav nyob ntawm qhov loj ntawm cov khoom. Qhov bar uas yuav tsum tau siv qhov ncaj ncees tuaj yeem ncaj ncaj ntawm qhov ntsuas kub thaum nws tau tawm hauv qhov cub tawg tom qab sib koom tes.
3.6 txoj cai khoov: tsis muaj qhov tshwj xeeb xav tau rau qhov khoov ntawm qhov khoob ntawm qhov khoob tom qab daim npav qhib thiab nruab nrab forging. Thaum forging ua tiav cov khoom tiav, qhov khoov ntawm qhov tuav ntawm cov tawv dub yuav tsum tsis ntau tshaj 6 hli / hli. Rau cov khoom xa tuaj nrog cov kab liab qab, qhov khoov yuav tsum tsis pub ntau dua 3 hli / hli.
3.7 tom qab forging, kub txiav yuav tsum tau nqa tawm raws li qhov ntev ntawm daim npav ua haujlwm. Vim tias, yog tias qhov ntsuas kub dhau, nws tsis yog qhov yooj yim rau kev txiav thiab txiav tsis yooj yim, uas yuav cuam tshuam qhov loj ntawm qhov tsis muaj. Yog tias qhov ntsuas kub qis dhau, qhov ntsuas siab yuav tsum loj thiab nws tsis nyab xeeb. Kev txiav lub kaum ntse ntse ntawm ob qho kawg yuav tsum tsis pub ntau tshaj 10% ntawm lub taub ncaj, thiab yuav tsum tsis muaj qhov pom tseeb ntawm lub suab horseshoe. Kub txiav tsis siv rau kev ua tiav lawm.
3.8 lub taub hau txiav cov khoom yuav tsum yog luj, thiab lub cev hnyav yuav tsum ntim rau hauv daim npav txheej txheem