Dawb forging txheej txheem ntawm flange ncej

Txais yuav qhov optimized dawb forging txheej txheem tuaj yeem zam cov khoom pov tseg los ntawm qhov ntau dhau ntawm forging xav tau rau cov shafts me me ntawm ob qho kawg ntawm qhov flange ncej nyob rau hauv cov txheej txheem ib txwm muaj thaum tseem zam qee qhov kev phom sij zoo los ntawm cov txheej txheem forging ib txwm muaj rau ntau dua.

Kev cai forging txheej txheem rau flange shafts

Lub flange ncej yog qhov tseem ceeb loj forging siv rau kev sib kis hauv cov cuab yeej loj xws li tshuab tshuab thiab muaj ntau yam kev siv hauv kev lag luam. Cov duab kwv yees tau pom hauv daim duab 1, thiab cov khoom siv feem ntau 45 # steel, 42CrMo, thiab lwm yam txheej txheem txheej txheem feem ntau: forging → ntxhib machining → quenching thiab tempering kev kho cua sov → precision machining → ntim. Kab lus no feem ntau tham txog cov txheej txheem tshiab hauv txheej txheem forging.

Figure.1 Flange Ncej

Lub flange ncej qauv yog tshwj xeeb, nrog a loj flange nyob rau hauv nruab nrab thiab ob peb kauj ruam me me faib rau ob sab, uas yog symmetrical, nrog ib tug me me txoj kab uas hla thiab ntev ntev. Qhov sib txawv ntawm qhov sib txawv ntawm cov flange thiab cov ncej me me yog qhov tseem ceeb. Cov txheej txheem forging tsoos yog raws li nram no:

• Thawj qhov cua sov: Thaum tshav kub kub cov khoom siv hlau ingot rau 1240 ℃ Raws li cov kev cai tshwj xeeb, thiab tom qab tso tawm ntawm lub cub tawg, pib nias lub clamp → chamfering → txiav lub nozzle → chim siab → ncig tawm.
• Qhov thib ob cua sov: chim siab → pub muab kwv yees → khij → rub tawm cov kauj ruam ntawm ob qho kawg → ua kom tiav precision forging thiab straightening → Kev kho cua sov tom qab forging.

Cov txheej txheem tseem ceeb tshaj plaws thiab qhov nyuaj yog rub tawm cov kauj ruam ntawm ob qho kawg tom qab tus lej luam ntawv tiav. Cov txheej txheem no tau qhia hauv daim duab 2, thiab qhov ntev D hauv daim duab yog los xyuas kom meej cov txheej txheem hauv qab no. Yog hais tias muaj eccentricity thaum lub sij hawm forging txheej txheem, nws yuav tsum tau tam sim ntawd offset, thiab ib tug loj margin yuav tsum tau sab laug. Feem ntau, nws yuav tsum siab tshaj qhov flange inch loj ntawm forging los ntawm 50mm-80mm. Raws li cov txheej txheem forging specifications, qhov ntev A hauv daim duab yuav tsum siab dua lossis sib npaug ntawm qhov ntev D / 3; txwv tsis pub, qhov chaw concave yuav tshwm sim thaum lub sij hawm elongation txheej txheem, uas ua rau forging tsis ua kom tiav. Txawm li cas los xij, vim qhov loj ntawm txoj kab uas hla ntawm flange, D dimension feem ntau yog loj. Yam tsawg kawg yog D / 3 qhov ntev yuav tsum tau sab laug kom tsis txhob muaj qhov chaw concave, feem ntau loj dua qhov xam qhov loj ntawm ob qhov kawg. Txawm li cas los xij, vim qhov xav tau kev siv tshuab thev naus laus zis kom tsis txhob muaj qhov chaw concave, cov khoom siv ntau dhau yuav tsum tau tso tseg, uas txo qis kev siv cov khoom siv raw thiab nce cov nqi tsis tsim nyog; Raws li kev txheeb cais, kev siv tus nqi ntawm cov khoom tiav los ntawm txoj kev forging yog qhov pib ntawm 30% -35%. Ntxiv mus, raws li qhov sib txawv ntawm qhov sib txawv ntawm flange thiab ncej nce, cov ntaub ntawv ntxiv yuav tsum tau muab tso rau ntawm ob qho kawg kom tau raws li qhov yuav tsum tau ua ntawm D / 3. Cov ntaub ntawv pov tseg yuav pom tseeb dua. Kev siv tus nqi ntawm ib co tiav steel ingots txawm qis dua 30%.

Figure.2 Daim duab kos duab ntawm cov kauj ruam ntawm ob qho kawg

Hauv kev tsim khoom tiag tiag, vim qhov nyias nyias ntawm flange thiab qhov sib txawv loj ntawm lub flange thiab ncej, forging deformation xws li flange deformation, ncej eccentricity, thiab tsis-concentricity ntawm ob kawg ntawm lub ncej yog nquag. tshwm sim thaum lub sij hawm forging txheej txheem, uas coj zoo inconvenience rau tom ntej ua. Txawm tias cov khoom seem feem ntau tshwm sim vim tsis txaus forging qhov ntev uas tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua rau precision machining. Cov laj thawj tshwj xeeb rau cov teeb meem no thiab kev tiv thaiv kev tiv thaiv luv luv tau teev tseg hauv Table 1.

Table.1 Yog vim li cas tsom xam thiab Rectification Measures forging Defects

Kev tshuaj xyuas meej ntawm cov laj thawj ntawm cov teeb meem saum toj no tau ua tiav. Txawm hais tias muaj kev tiv thaiv thiab kho cov kev ntsuas raug tsim los tiv thaiv thiab kho qhov ua rau ntawm tus kheej, lawv nyuaj rau kev zam hauv cov txheej txheem siv. Qee qhov teeb meem nyuaj rau zam, thiab ntau qhov teeb meem sib cuam tshuam. Tsis tas li ntawd, cov neeg ua haujlwm sib txawv muaj cov kev khiav hauj lwm sib txawv, thiab cov txheej txheem forging cia siab rau qhov pom kev, ua rau muaj qhov sib txawv. Yog li ntawd, nws yog qhov nyuaj los daws qhov teeb meem tag nrho. Txawm tias qee qhov kev ntsuas tuaj yeem cuam tshuam rau kev tsim khoom thiab ua rau tus nqi ntawm cov txheej txheem ntau lawm.

Ib Tus Tshiab Free Forging Txheej Txheem rau Flange Shafts

Kab lus no daws cov teeb meem saum toj no los ntawm lwm txoj kev tshiab dawb-forging. Lub tswv yim tseem ceeb yog txo qhov loj ntawm D hauv daim duab 2, yog li txo qhov loj ntawm D / 3 kom nws sib npaug los yog me ntsis loj dua qhov xav tau ntawm cov khoom sib cais ntawm ob qho kawg, txo cov khoom pov tseg los ntawm kev sib cais ntawm cov khoom siv ntau dhau. Qhov nruab nrab flange ua tau raws li cov txheej txheem loj yuav tsum tau los ntawm kev nce qhov loj ntawm B thiab tom qab ntawd siv lub flange upsetting phaj kom loj dua D. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:

• Thawj qhov cua sov: Thaum tshav kub kub cov khoom siv hlau ingot rau 1240 ℃ Raws li cov kev cai tshwj xeeb, thiab tom qab tso tawm ntawm lub cub tawg, pib nias lub clamp → chamfering → txiav lub nozzle → chim siab → puag ncig daim duab → khij → ncej kos duab, raws li qhia hauv daim duab 3.
• Thaum tshav kub kub thib ob: Raws li pom hauv daim duab 4, txhim kho qhov khoob thiab siv lub phaj flange chim siab rau qhov flange rau qhov txheej txheem loj → elongate cov kauj ruam ntawm ob qhov kawg mus rau qhov txheej txheem loj → Ua kom tiav precision forging thiab straightening → Kev kho cua sov tom qab forging.

Figure.3 Optimized forging process diagram

Figure.4 Flange Upsetting

Figure.5 Simulation txheej txheem ntawm Flange txoj kev

Cov txheej txheem forging optimized txo qhov sib txawv ntawm qhov sib txawv ntawm flange thiab cov ncej me me ua ntej flange cov ntaub ntawv, zoo heev txo qhov nyuaj ntawm forging. Eccentricity thiab nonconcentricity teeb meem yog yooj yim dua kho thaum lub sij hawm forging txheej txheem. Tom qab cov teeb meem eccentricity thiab nonconcentricity ua ntej flange txoj kev raug daws, teeb meem deformation thaum lub sij hawm tom ntej flange txheej txheem tuaj yeem kho tau zoo los ntawm kev siv cuab yeej. Tsis tas li ntawd, vim cov cuab yeej txwv thiab eccentricity, non-concentricity tsuas tshwm sim dua thaum lub sij hawm lub flange-forming txheej txheem, zoo zam cov kev tsis zoo no. Daim duab 5 qhia txog cov txheej txheem flange-forming simulated los ntawm DEFORM software thiab lub siab xav tau thaum lub sij hawm tsim. Nws tuaj yeem pom tias cov nyhuv tsim yog qhov zoo tagnrho, tab sis los ntawm qhov kev xav ntawm kev tsim cov siab, cov kev xav tau ntawm cov cuab yeej siv siab yog qhov siab. Tsis tas li ntawd, raws li txoj kab uas hla ntawm flange nce, txoj kev tsim siab yuav nce, thiab cov cuab yeej sib txuam yuav tsum tau ua kom tiav cov txheej txheem flange.

Figure.6 Simulation txheej txheem ntawm flange chim siab.

Daim duab 6 qhia tau hais tias tag nrho qhov ntev ntawm flange thaum lub sij hawm kev ntxhov siab yuav ntev dua, qhia tias tag nrho cov ntaub ntawv uas nce lub flange txoj kab uas hla yog los ntawm lub circumferential flange. Qee cov ntaub ntawv los ntawm cov flange circumferential yog muab faib mus rau hauv nruab nrab ncej lub cev, uas ua rau tag nrho ntev ntawm lub cev ncej ua ntev (txoj kev xav, lub upsetting txoj kab uas hla yuav tsum nyob ib ncig ntawm 1630mm, thaum lub simulated tus nqi nyob rau hauv daim duab 6 (c) yog. tsuas yog nyob ib ncig ntawm 1570mm, qhia tias tsis yog tag nrho cov ntaub ntawv los ntawm cov flange circumferential yog siv rau qhov nce ntawm flange sab nraud txoj kab uas hla, Qee qhov txuas mus rau sab hauv los tsim qhov ntev ntev ntawm cov ncej, yog li thaum tsim cov txheej txheem, qhov loj ntawm qhov nruab nrab flange. Ua ntej kev ntxhov siab tsis tuaj yeem suav tag nrho raws li lub hauv paus ntsiab lus ntawm qhov ntim tsis sib xws, uas yog, qhov ntim ntawm flange ncig ua ntej upsetting lub flange yuav tsum sib npaug rau qhov ntim ntawm flange ncig tom qab upsetting lub flange. Cov khoom siv flange txaus ua tau raws li cov txheej txheem loj ntawm cov txheej txheem forging, thaum txo txoj kab uas hla D, ntev npaum li qhov ntev ntawm ob qhov kawg tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm D / 3, txawm tias nws yog me ntsis tsawg dua D / 3 ( vim hais tias cov ncej ntawm lub flange chim siab kuj yuav ntev dua nyob rau hauv lub neej yav tom ntej), kev txo ntau dhau ntawm txoj kab uas hla D yuav tsum zam kom ntau li ntau tau, vim hais tias qhov ntau txo, qhov loj ntawm flange thickness dimension B, uas yog sib npaug rau nruab nrab siab. qhov siab thaum upsetting lub flange, tsis tsuas yog nws yuav ua rau kom lub siab xav tau kev chim siab, Vim ntau deformation thaum upsetting, seem tsis xws luag xws li ob strand, folding, thiab txawm tearing tej zaum yuav tshwm sim. Qhov no yuav tsum tau txiav txim siab tag nrho thaum tsim cov txheej txheem. Txoj kab uas hla D dimension yuav tsum tau txo kom tsawg li ntau tau kom txo tau qhov nyuaj ntawm flange-forming txheej txheem thiab qhov tshwm sim ntawm cov teeb meem zoo.

Cov txheej txheem tshiab hauv paus daws teeb meem ntawm cov khoom siv raw khoom pov tseg thiab txhim kho kev siv cov khoom siv zoo heev. Los ntawm kev txheeb cais, cov khoom siv ntawm cov khoom tiav tau nce mus txog 50%. Thiab kev siv cov cuab yeej siv tau daws cov teeb meem zoo xws li flange deformation, eccentricity, thiab non-concentricity. Nyob rau tib lub sijhawm, cov cuab yeej siv ntxiv yog qhov yooj yim thiab ntau yam thiab tuaj yeem siv los tsim ntau yam tshwj xeeb ntawm flange shafts. Kev ua haujlwm tiag tiag kuj tseem yooj yim.

xaus

• (1) Cov txheej txheem tshiab tau daws qhov teeb meem ntawm kev siv cov khoom siv qis, nce cov khoom siv ntawm cov khoom tiav los ntawm 30% -35% mus rau 45% -50%. Thiab raws li qhov sib txawv nyob rau hauv cross-sectional qhov ntev ntawm lub flanges thiab shafts nce, cov khoom siv tus nqi yuav nce.
• (2) Cov txheej txheem tshiab no zoo heev zam cov teeb meem zoo xws li flange deformation, eccentricity, thiab non-concentricity hauv cov txheej txheem ib txwm, txo qhov nyuaj ntawm kev ua haujlwm forging, thiab muaj zog practicality.
• (3) Cov txheej txheem tsim flange yuav tsum tau tsim cov cuab yeej sib xws thiab cov khoom siv, thiab kev tsim yuav tsum muaj ntau lub siab, uas yuav tsum muaj cov cuab yeej siv siab txaus los koom tes nrog. forging.

Sau: Chen Wenquan