Daim ntawv thov ntawm plasma hmoov tshuaj tsuag vuam tshuab hauv valve sealing nto manufacturing

Daim ntawv thov ntawm plasma hmoov tshuaj tsuag vuam tshuab hauv valve sealing nto manufacturing

A, feem ntau valve faults thiab yog vim li cas nyob rau hauv kev siv ntawm lub valve nyob rau hauv tus txheej txheem ntawm tej faults yog: 1. qia rotation yog tsis hloov tau los yog daig qia rotation tsis hloov pauv los yog daig, lub ntsiab yog vim li cas: packing siab nruj heev; Lub thawv ntim khoom tsis yog tus qauv; Valve qia thiab qia bushing siv tib yam khoom lossis cov khoom xaiv tsis raug; Qhov sib txawv tsis txaus ntawm qia thiab bushing; Valve qia dabtsi yog khoov; Xov nto roughness tsis tas yuav tsum tau.
Ua ntej, qhov tsis ua haujlwm ntawm lub valve thiab qhov ua rau
Feem ntau ua txhaum ntawm kev siv cov li qub yog:
1. Lub qia tsis tig flexibly los yog daig
Kev sib hloov ntawm qia tsis hloov pauv lossis daig, cov laj thawj tseem ceeb yog: ntim siab nruj heev; Lub thawv ntim khoom tsis yog tus qauv; Valve qia thiab qia bushing siv tib yam khoom lossis cov khoom xaiv tsis raug; Qhov sib txawv tsis txaus ntawm qia thiab bushing; Valve qia dabtsi yog khoov; Xov nto roughness tsis tas yuav tsum tau.
2. Lub sealing nto leaks
Lub ntsiab yog vim li cas rau sealing nto to: sealing nto puas, xws li indentation, abrasion, tawg hlau nyob rau hauv nruab nrab; Muaj cov av txuas ntawm lub sealing nto los yog lub nplhaib sealing tsis txuas zoo.
3. Lub ntim cov xau
Qhov laj thawj ntawm kev ntim cov xau yog: packing siab phaj tsis nias; Kev ntim khoom tsis txaus; Kev ntim khoom vim kev khaws cia tsis zoo thiab tsis ua haujlwm; Lub roundness ntawm lub valve qia tshaj qhov teev los yog saum npoo ntawm lub valve qia muaj khawb, kab, plaub hau thiab ntxhib tsis xws luag; Ntim ntau yam, qauv loj lossis zoo tsis ua raws li qhov yuav tsum tau ua.
4. Kev sib txuas ntawm lub valve lub cev thiab lub valve npog xau
Qhov ua tau yog: qhov tsis sib xws ntawm bolts ntawm flange pob qij txha ua rau qaij ntawm lub flange, lossis tsis txaus nruj ntawm bolts, thiab kev puas tsuaj rau qhov sib txuas ntawm lub cev valve thiab lub hau npog; Lub gasket puas lossis tsis ua raws li qhov yuav tsum tau ua; Flange sib koom nto yog tsis sib npaug, flange machining nto tsis zoo; Cov qia bushing thiab qia xov machining tsis zoo ua rau lub valve npog qaij.
5. Lub rooj vag cuam tshuam nrog lub valve npog
Thaum lub rooj vag valve qhib rau lub xeev qhib tag nrho, qee zaum lub rooj vag tsis tuaj yeem qhib tag nrho, thiab kev cuam tshuam ntawm lub rooj vag thiab lub qhov rooj valve tshwm sim. Yog vim li cas yog tias lub rooj vag tsis raug teeb tsa kom raug lossis lub geometry ntawm lub valve npog tsis tau raws li qhov yuav tsum tau teev tseg hauv tus qauv.
6. Lub ram tsis kaw nruj nreem
Cov laj thawj tseem ceeb ntawm qhov xwm txheej no yog: lub zog kaw tsis txaus; Nruab nrab ntawm lub rooj zaum valve thiab lub rooj vag mus rau hauv cov khib nyiab; Valve sealing nto tsis zoo ua tiav lossis puas.
7. Lwm yam, xws li trachoma thiab sealing nto kab nrib pleb tshwm sim los ntawm casting defects, kuj yuav cuam tshuam rau kev siv ntawm lub valve, thiab cov kev ntsuas yuav tsum tau muab coj los daws.
Qhov thib ob, qhov kev daws teeb meem ntawm lub valve
Raws li cov kev ua txhaum saum toj no, ntau txoj hauv kev yuav tsum tau coj los daws lawv raws li qhov xwm txheej tiag tiag. Cov kev daws teeb meem tshwj xeeb tau qhia hauv lub rooj.
Peb, qhov xaus
Txhawm rau kom ntseeg tau tias kev siv lub valve ib txwm muaj, ntxiv rau raws li kev txiav txim siab qhov ua rau nws qhov kev txhaum tshwm sim hauv qhov tseeb thiab kev tshuaj xyuas, thiab siv cov kev ntsuas coj los daws nws, kuj yuav tsum ntxiv dag zog rau kev tswj lub valve, ua haujlwm txhua hnub thiab tshuaj xyuas. , xws li txo qhov tsis ua haujlwm ntawm lub valve thiab nce kev ncaj ncees ntawm lub valve, ua rau nws ua si ntau dua rau qhov chaw nres nkoj ntawm kev thauj khoom thiab tshem tawm cov khoom siv hluav taws xob.
Daim ntawv thov ntawm plasma hmoov tshuaj welding tshuab nyob rau hauv valve sealing nto tsim PPW txheej txheem es tsis txhob ntawm phau ntawv arc surfacing (los yog phau ntawv nplaim taws surfacing), ** muaj peev xwm muab tag nrho cov ua si rau cov yam ntxwv ntawm PPW txheej txheem, thiab qhia tshwj xeeb zoo. Qhov no yog vim lub valve sealing nto yog "lub plawv" ntawm lub valve, lub valve sealing nto txheej txheem tsim thiab cov ntaub ntawv ncaj qha cuam tshuam rau qhov zoo thiab kev pab lub neej ntawm lub valve, tab sis kuj muaj feem xyuam rau cov nqi tsim khoom ntawm lub valve. Lub sealing nto ntawm lub valve yuav tsum tau ib tug tej yam hardness ntau yam thiab hardness uniformity, zoo abrasion kuj thiab tej corrosion kuj, thiab cov muaj pes tsawg leeg ntawm cov alloy kuj muaj cov kev cai sib xws.
Qhov zoo ntawm daim ntawv thov nyob rau hauv valve sealing nto manufacturing
Siv PPW txheej txheem es tsis txhob ntawm phau ntawv arc surfacing (los yog phau ntawv nplaim taws surfacing) nyob rau hauv valve sealing nto tsim, ** tuaj yeem muab tag nrho cov kev ua si rau cov yam ntxwv ntawm PPW txheej txheem, thiab qhia tshwj xeeb zoo. Qhov no yog vim lub valve sealing nto yog "lub plawv" ntawm lub valve, lub valve sealing nto txheej txheem tsim thiab cov ntaub ntawv ncaj qha cuam tshuam rau qhov zoo thiab kev pab lub neej ntawm lub valve, tab sis kuj muaj feem xyuam rau cov nqi tsim khoom ntawm lub valve. Lub sealing nto ntawm lub valve yuav tsum tau ib tug tej yam hardness ntau yam thiab hardness uniformity, zoo abrasion kuj thiab tej corrosion kuj, thiab cov muaj pes tsawg leeg ntawm cov alloy kuj muaj cov kev cai sib xws.
Rau qhov ntim loj thiab ntau yam ntawm nruab nrab kub thiab siab li qub thiab siab siab li qub, corrosion resistant li qub, lub sealing nto yog tsim los ntawm alloy surfacing. Vim lub siab dilution tus nqi ntawm lub hauv paus hlau, ib txheej arc surfacing tsis tau raws li qhov yuav tsum tau ntawm hardness thiab alloy muaj pes tsawg leeg. Feem ntau, 2-3 txheej yuav tsum surfacing. Lub sealing nto ntawm qhov kub thiab txias siab valve thiab corrosion resistant valve yuav tsum tau surfacing ntawm kim cobalt puag los yog npib tsib xee puag alloy, kev siv ntawm phau ntawv surfacing, tsis siv cov khoom siv, thiab zoo yog ib qho nyuaj los xyuas kom meej. Phau ntawv surfacing tsis zoo heev thiab tus nqi ntawm cov neeg kho tshuab txiav yog loj, uas kuj yog ib qho ntawm feem cuam tshuam rau cov nqi tsim khoom. PPW txheej txheem tau txais yuav, thiab nws cov txheej txheem cov yam ntxwv tsuas yog ib qho kev daws teeb meem zoo los daws ntau yam teeb meem ntawm phau ntawv surfacing ntawm valve sealing nto:
Plasma hmoov tshuaj tsuag vuam tshuab muaj qhov zoo
1, vim hais tias lub hauv paus hlau dilution tus nqi tuaj yeem tswj tau, monolayer tsuag vuam tuaj yeem ua tiav cov kev xav tau ntawm hardness uniformity thiab alloy muaj pes tsawg leeg, txuag tus nqi ntawm alloy.
2, tshwj xeeb tshaj yog tsim rau tshuaj tsuag vuam kim kim cobalt puag thiab npib tsib xee puag alloy, tshuaj tsuag vuam txheej zoo, siab alloy siv tus nqi, tsis yog los xyuas kom meej qhov zoo thiab txo qhov sealing nto raug nqi.
3, vim hais tias cov tshuaj tsuag vuam txheej yog tsim tau zoo, qhov saum npoo yog du thiab du, qhov loj me tuaj yeem tswj tau ntau dua, yog li nws yooj yim los txiav thiab txo lub sijhawm ua haujlwm ntawm cov tshuab ua haujlwm.
4, kev siv cov hlau alloy tsuag vuam es tsis txhob ntawm phau ntawv surfacing 2Cr13 tsis tas yuav annealing kev kho mob, tshem tawm cov annealing - quenching txheej txheem.
5, ntau lawm efficiency, yog ntau tshaj 3 zaug ntawm phau ntawv surfacing.
Vim hais tias ntawm qhov zoo li saum toj no, yog li nyob rau hauv lub valve sealing nto tsim PPW txheej txheem, yog qhov zoo, kev ua haujlwm siab, kev siv tsawg ntawm txoj kev tsim khoom, muaj txiaj ntsig zoo tshaj plaws thiab cov txiaj ntsig ntawm kev lag luam ncaj qha.
Kev txheeb xyuas nyiaj txiag
Rau qhov ntim loj thiab ntau yam ntawm qhov nruab nrab kub thiab siab valve (qhov tso zis txhua xyoo ntawm lub teb chaws yog ntau pua txhiab tons), tam sim no cov tuam ntxhab feem ntau siv phau ntawv yooj yim thiab yooj yim surfacing 2Cr13. Txawm hais tias tus txheej txheem PPW tuaj yeem hloov qhov kev taw qhia surfacing ntawm 2Cr13 nyob ntawm seb tus nqi ntawm kev sib khi tuaj yeem txo.
Lub sealing nto raug nqi yog tsim los ntawm:
(1) Tus nqi ntawm cov khoom siv surfacing; (2) tus nqi ua haujlwm ntawm qhov chaw; (3) Machining nqi ntawm surfacing txheej; (4) Cov nqi kho cua sov, thiab lwm yam. Tshawb xyuas kev lag luam nrog rau 4 qhov kev hwm tam sim no.
1. Tus nqi ntawm cov khoom siv surfacing
Tus nqi ntawm cov ntaub ntawv surfacing yog txiav txim siab los ntawm kev noj cov khoom siv surfacing thiab tus nqi ntawm cov ntaub ntawv. Muaj cov kev cai tsim qauv rau lub thickness thiab dav ntawm txheej surfacing ntawm lub sealing nto ntawm ib hom valve, thiab kev noj cov ntaub ntawv surfacing nyob ntawm qhov kev siv tus nqi ntawm cov alloy. Kev siv tus nqi ntawm cov surfacing alloy nyob ntawm qhov dilution tus nqi thiab cov tsos ntawm lub hauv paus hlau. Vim lub siab dilution tus nqi ntawm lub hauv paus hlau ntawm phau ntawv arc surfacing, nws yuav siv sij hawm ntau tshaj ob lub sij hawm surfacing kom tau raws li qhov yuav tsum tau, yog li tus tsim thickness ntawm cov khoom tiav ntawm cov surfacing txheej feem ntau loj dua 3 hli. PPW txheej txheem, lub hauv paus hlau dilution tus nqi yog tsawg, tsuav yog lub vuam ib zaug yuav ua tau raws li qhov yuav tsum tau, cov khoom tiav tsim thickness ntawm cov surfacing txheej yuav raug txo kom 2 hli. Vim tsis zoo phau ntawv surfacing, tsis sib xws, feem ntau thicker thiab dav, qhov kev siv ntawm alloy surfacing txheej * yog hais txog 40%. Kev siv tus nqi ntawm cov hlau nplaum txheej txheej los ntawm PPW txheej txheem tuaj yeem ncav cuag 70%.
Los ntawm txhais tes arc surfacing tshem tawm cov electrode txheej thiab electrode lub taub hau, thiab kev siv tus nqi ntawm cov khoom yog * 70%, thaum siv tus nqi ntawm PPW alloy hmoov tuaj yeem ncav cuag 95%.
Table 1 piv cov khoom siv thiab cov nqi ntawm cov khoom siv ntawm ob txheej txheej saum npoo. Kev soj ntsuam thiab kev sib piv cov txiaj ntsig qhia tau hais tias txawm hais tias cov electrode pheej yig dua li cov hmoov hlau alloy, vim qhov kev siv qis ntawm electrode phau ntawv surfacing, qhov hnyav ntawm cov khoom siv yog ntau dua 3 npaug ntawm cov txheej txheem PPW, yog li cov khoom siv ntawm cov khoom siv arc. surfacing yog 1.9 npaug ntawm cov txheej txheem PPW. Qhov no yog ib daim duab uas xav tsis thoob heev. Yog tias tag nrho 2Cr13 electrode noj los ntawm txhua lub Hoobkas valve yog 100T txhua xyoo, cov khoom siv yog 3.3 lab RMB. Nrog rau cov txheej txheem PPW, lub hauv paus hlau alloy hmoov noj yog 33T, thiab cov khoom siv yog kwv yees li 1.82 lab, yog li cov khoom siv yuav raug cawm 1.48 lab RMB.
Surfacing welding txoj kev
Tus nqi project PPW txheej txheem
Phau ntawv arc surfacing ntawm Fe-base alloy los ntawm cov tshuaj tsuag vuam
2 cr13
Qhov hnyav ntawm alloy rau surfacing ntawm lub ntsej muag sealing, Kg11.5
Kev siv cov hlau nplaum ntawm txheej txheej yog 70% 45%
Alloy hnyav ntawm txheej txheej, Kg1.433.33
Kev siv cov khoom siv surfacing,% 95% 70%
Surfacing alloy khoom noj, Kg1.54.76
Tus nqi ntawm cov khoom siv alloy yog 5,533 yuan / kg
Tus nqi ntawm cov ntaub ntawv, 82.5157 yuan
Tus nqi ntawm cov khoom siv rau tus nqi siv 11.9
2. Tus nqi ua haujlwm ntawm surfacing vuam
Lub sij hawm surfacing tus nqi nyob ntawm qhov kev ua tau zoo ntawm txhua tus neeg ua haujlwm. Ob phau ntawv arc surfacing thiab PPW surfacing yuav tsum tsuas yog ib tus neeg ua haujlwm ua haujlwm. Lub surfacing tus nqi ntawm ib tug neeg ua hauj lwm ib tug ua hauj lwm rau phau ntawv arc surfacing yog hais txog 12Kg nyob rau hauv nruab nrab, thaum lub sij hawm ntawm cov txheej txheem PPW tuaj yeem ncav cuag 20Kg. Phau ntawv arc surfacing yog 12 RAMS surfacing rau ib tug neeg ua hauj lwm ib tug ua hauj lwm, PPW txheej txheem yuav tsuag weld 60 RAMS, thiab cov efficiency ntau lawm yog 5 npaug ntawm phau ntawv arc surfacing. Yog hais tias tus nqi ib teev ntawm phau ntawv hluav taws xob ib leeg surfacing yog 10 yuan ib thooj, ces tus nqi teev ntawm PPW txheej txheem yog 2 yuan ib thooj *. Lub sij hawm tus nqi ntawm surfacing welding yog heev txo.
3. Machining nqi ntawm surfacing txheej
Vim yog cov txheej txheem PPW, cov tshuaj tsuag vuam txheej yog du thiab du, thiab cov nyiaj txiav tsawg dua. Txawm hais tias lub hardness ntawm vuam txheej yog txhim kho, nruam txiav tuaj yeem ua tiav yam tsis muaj kev txiav. Lub sijhawm ua haujlwm tag nrho yog qis dua li ntawm phau ntawv hluav taws xob ib leeg, thiab tus nqi machining raug txo los ntawm 20%.
4. Cov nqi kho cua sov
Kev tuav hluav taws xob ib leeg surfacing 2Cr13, raws li cov txheej txheem tsim khoom, tom qab ua tiav, cov txheej txheem vuam nyuaj dhau los ua tiav, yog li nws tuaj yeem ua tiav los ntawm kev kho annealing. Tom qab machining, thiaj li yuav ua tau lub hardness ntawm lub sealing nto, nws yuav tsum tau quenched ntawm high zaus thiab ces av. Ntau lub tuam txhab valve tsis them nyiaj rau qhov zoo ntawm sealing nto, annealing mechanical processing, tsis muaj ntau zaus quenching kev kho mob, yog li lub sealing nto hardness yog tsawg, puas kuj tsis zoo.
PPW txheej txheem, tshuaj tsuag vuam txheej hardness yog nyob rau hauv qhov ntau ntawm cov kev cai, tsis tas yuav mus los ntawm kev kho cua sov (txhaj vuam hlau tsis quenched), tab sis ncaj qha ua tiav rau hauv cov khoom tiav, tuaj yeem txuag hluav taws xob noj, yooj yim kom pom cov teeb meem zoo ntawm Kev kho cua sov txheej txheem. PPW txheej txheem, tsis tsuas yog txhim kho qhov zoo ntawm valve sealing nto, tab sis kuj txo cov nqi tsim khoom.
Los ntawm kev txheeb xyuas kev lag luam saum toj no ntawm kev sib khi ntawm tus nqi tsim khoom, nws tuaj yeem pom tau tias PPW txheej txheem hauv daim ntawv thov valve muaj qhov zoo ntawm kev txhim kho zoo, txo nqi, txhim kho efficiency thiab lwm yam. Yog tias cov txheej txheem PPW tuaj yeem nrov thiab siv rau hauv kev lag luam valve los hloov cov ntaub ntawv rov qab los ntawm kev siv hluav taws xob nyob ib leeg, cov txiaj ntsig kev sib raug zoo thiab kev lag luam yuav tau txais.