0102 ib0304 ib05
Tham txog qhov sib txawv ntawm forged thiab cam khwb cia steel li qub rau stainless hlau valve to txhaum hom ntsiab lus
Xyoo 2022-11-15
Tham txog qhov sib txawv ntawm forged thiab cam khwb cia steel li qub rau stainless hlau valve to txhaum hom ntsiab lus Cast steel yog hais txog txhua yam hlau castings uas tsim los ntawm txoj kev casting. Ib hom casting alloy. Cam khwb cia hlau muab faib ua peb pawg: cam khwb cia carbon steel, cam khwb cia hlau tsis tshua muaj hlau thiab cam khwb cia tshwj xeeb hlau. Cam khwb cia hlau yog tsuas yog siv nyob rau hauv kev tsim ntawm ib co complex zoo, nyuaj rau forge los yog txiav txoj kev thiab yuav tsum tau muaj zog thiab plasticity qhov chaw. Forging steel yog hais txog ntau yam ntaub ntawv forging thiab forgings tsim los ntawm txoj kev forging. Forged steel qhov chaw muaj qhov zoo dua li cam khwb cia hlau qhov chaw, tuaj yeem tiv taus qhov cuam tshuam loj, plasticity, toughness thiab lwm yam ntawm cov khoom siv kho tshuab kuj siab dua cov hlau cam khwb cia, yog li tag nrho qee qhov tseem ceeb ntawm lub tshuab yuav tsum tau ua los ntawm forged steel qhov chaw. Cam khwb cia hlau yog hais txog txhua yam ntawm cov hlau castings uas tsim los ntawm txoj kev casting. Ib hom casting alloy. Cam khwb cia hlau muab faib ua peb pawg: cam khwb cia carbon steel, cam khwb cia hlau tsis tshua muaj hlau thiab cam khwb cia tshwj xeeb hlau. Cam khwb cia hlau yog tsuas yog siv nyob rau hauv kev tsim ntawm ib co complex zoo, nyuaj rau forge los yog txiav txoj kev thiab yuav tsum tau muaj zog thiab plasticity qhov chaw. Forging steel yog hais txog ntau yam ntaub ntawv forging thiab forgings tsim los ntawm txoj kev forging. Forged steel qhov chaw muaj qhov zoo dua li cam khwb cia hlau qhov chaw, tuaj yeem tiv taus qhov cuam tshuam loj, plasticity, toughness thiab lwm yam ntawm cov khoom siv kho tshuab kuj siab dua cov hlau cam khwb cia, yog li tag nrho qee qhov tseem ceeb ntawm lub tshuab yuav tsum tau ua los ntawm forged steel qhov chaw. Forged steel valve thiab cam khwb cia steel valve qhov sib txawv: qhov zoo ntawm forged steel valve yog zoo dua li cov cam khwb cia steel valve, tuaj yeem tiv taus qhov cuam tshuam loj, plasticity, toughness thiab lwm yam ntawm cov khoom siv kho tshuab siab dua li cov hlau cam, tab sis lub nominal txoj kab uas hla yog me me, feem ntau hauv DN50 hauv qab no. Casting valve siab qib yog qis, feem ntau siv nominal siab rau PN16, PN25, PN40, 150LB-900LB. Forged steel valve qib: PN100, PN160, PN320, 1500LB-3500LB, thiab lwm yam cam khwb cia hlau yog tsuas yog siv nyob rau hauv kev tsim khoom ntawm ib co complex zoo, nyuaj rau forge los yog txiav txoj kev thiab yuav tsum tau siab zog thiab plasticity qhov chaw. Casting yog kua tsim, thiab forging yog cov txheej txheem yas deformation, forging forming workpiece tuaj yeem txhim kho cov txheej txheem sab hauv ntawm lub koom haum, cov khoom siv kho tshuab zoo, cov khoom zoo li qub, cov khoom tseem ceeb nyuaj yuav tsum tau forged, casting yuav ua rau muaj kev sib cais, kev ua haujlwm tsis zoo, tau kawg, casting muaj nws qhov zoo, kev sib sau ua haujlwm nyuaj forging tsis yooj yim rau qhib pwm, tau coj los ua haujlwm. Forging valve (forged steel valve) Taw qhia: 1. Forging tuaj yeem muab faib ua: (1) Kaw hom forging (tuag forging). Lub forging yuav muab faib ua tuag forging, teb forging, txias hau, extrusion, thiab lwm yam. Cov hlau dawb paug yog muab tso rau hauv lub forging tuag nrog ib tug tej yam zoo li kom tau lub forging. Raws li qhov ntsuas kub deformation, nws tuaj yeem muab faib ua qhov txias forging (forging kub yog qhov kub ib txwm), sov forging (forging kub yog qis dua li qhov kub ntawm cov hlau tsis muaj recrystallization) thiab kub forging (forging kub yog siab tshaj qhov recrystallization kub). (2) Qhib forging (dawb forging). Muaj ob txoj kev ntawm phau ntawv forging thiab mechanical forging. Cov hlau dawb yog muab tso rau nruab nrab ntawm sab sauv thiab sab qis ob lub pob zeb thaiv (hlau) thiab lub zog cuam tshuam los yog lub siab yog siv los deform cov hlau dawb paug thiaj li tau txais qhov yuav tsum tau forgings. 2, forging yog ib qho ntawm ob yam ntawm forging, mechanical load yog siab, hnyav ua haujlwm ntawm qhov tseem ceeb, kev siv forgings, cov duab ntawm qhov yooj yim muaj dov vuam qhov chaw, tsuas yog cov phaj profile. Vuam qhov thiab xoob casting ntawm cov ntaub ntawv hlau yuav raug tshem tawm los ntawm forging. 3, kev xaiv qhov tseeb ntawm forging piv los txhim kho cov khoom zoo thiab txo cov nqi muaj kev sib raug zoo. Forging cov ntaub ntawv feem ntau yog carbon hlau, stainless hlau thiab hlau alloy. Forging ratio yog hais txog qhov sib piv ntawm qhov chaw hla ntawm cov hlau ua ntej deformation mus rau qhov chaw seem tuag tom qab deformation. Thawj lub xeev ntawm cov ntaub ntawv muaj xws li ingot, bar, kua hlau thiab hlau hmoov. 4. Cov cuab yeej cuab tam ntawm forgings feem ntau zoo dua li cov castings ntawm tib cov ntaub ntawv. Forging yog ib txoj kev ua kom tau ib qho zoo thiab qhov loj me nrog cov cuab yeej zoo dua los ntawm kev siv lub siab rau cov hlau tsis muaj nrog forging thiab nias machinery kom cov hlau dawb paug tsim cov yas deformation. Casting valve (cam khwb cia steel valve) 1, muaj ntau ntau yam casting, raws li tus qauv qauv ntawm cov xuab zeb zoo tib yam thiab tshwj xeeb casting: ① Ordinary xuab zeb casting, xws li cov xuab zeb qhuav, ntub xuab zeb thiab tshuaj hardening xuab zeb 3 hom. (2) Tshwj xeeb casting, raws li cov khoom siv casting tuaj yeem muab faib ua tshwj xeeb casting ntawm ore thiab tshwj xeeb casting ntawm cov ntaub ntawv hlau; Tshwj xeeb casting nrog hlau li casting khoom, xws li: siab casting, hlau pwm casting, tsis tshua muaj siab casting, nruam casting, centrifugal casting, thiab lwm yam Tshwj xeeb casting nrog tej yam ntuj tso ntxhia xuab zeb raws li pwm khoom muaj xws li: tseeb casting, peev casting, plhaub casting nyob rau hauv casting rhiav , av nkos casting, tsis zoo siab casting, ceramic casting, thiab lwm yam 2. Casting yog ib hom hlau kub ua hauj lwm technology. Casting ntau lawm muaj zoo dua txhua yam khoom siv, dav adaptability ntawm casting ntau lawm, thiab tsis tshua muaj nqi. 3. Casting yog cov txheej txheem tseem ceeb ntawm kev lag luam niaj hnub machinery manufacturing. Nws yog los yaj cov hlau rau hauv cov kua thiab ncuav nws mus rau hauv lub casting pwm. 4. Cov txheej txheem casting feem ntau suav nrog: (1) Npaj cov pwm pwm (cov pwm siv los ua cov hlau ua kua hlau ua cov khoom siv hlau, qhov zoo ntawm cov pwm pwm ncaj qha cuam tshuam rau qhov zoo casting), casting pwm raws li tus naj npawb ntawm kev siv tau. muab faib ua hom pov tseg, ntau hom thiab hom mus sij hawm ntev, casting pwm raws li cov khoom siv: hom hlau, hom xuab zeb, hom av nkos, hom ceramic, hom graphite, thiab lwm yam. ② Melting thiab casting ntawm cam khwb cia hlau, cam khwb cia hlau tsuas yog cam khwb cia hlau. , carbon steel thiab stainless hlau, thiab lwm yam .; (3) Casting kev kho mob thiab tshuaj xyuas, casting kev kho mob muaj xws li casting nto txawv teb chaws teeb meem thiab core, kev kho mob ntawm protrusions (burr sib tsoo, txiav thiab pouring risers thiab seam kev kho mob, thiab lwm yam), casting kub kho, shaping, ntxhib machining thiab xeb kev kho mob, thiab lwm yam. .5, qhov tsis zoo ntawm kev tsim cov qauv casting, casting yuav ua rau lub suab nrov, cov pa phem thiab plua plav thiab ua paug rau ib puag ncig, thiab cov ntaub ntawv tsim nyog (xws li cov khoom tsim qauv, hlau, roj, ntoo, thiab lwm yam) thiab cov khoom siv (xws li kev tsim cov tub ntxhais. tshuab, metallurgical rauv, molding tshuab, xuab zeb tov tshuab, txhaj tshuaj blasting tshuab, thiab lwm yam) ntau. 6. Cam khwb cia hlau muab faib ua peb pawg: cam khwb cia carbon steel, cam khwb cia hlau tsis tshua muaj hlau thiab cam khwb cia tshwj xeeb hlau. ① Cam khwb cia carbon steel. Cam khwb cia hlau nrog carbon ua lub ntsiab alloying caij thiab me me ntawm lwm cov ntsiab lus. Cov ntsiab lus carbon tsawg dua 0.2% rau casting qis carbon steel, cov ntsiab lus carbon 0.2% ~ 0.5% rau casting nruab nrab carbon steel, cov ntsiab lus carbon ntau tshaj 0.5% rau casting siab carbon steel. Nrog kev nce ntawm cov ntsiab lus carbon, lub zog thiab hardness ntawm cam khwb cia carbon steel nce. Cam khwb cia carbon steel muaj siab zog, plasticity thiab toughness, tsis tshua muaj nqi, siv nyob rau hauv hnyav machinery los tsim qhov chaw rau dais loj loads, xws li rolling tshuab ncej, hydraulic xovxwm puag, thiab lwm yam. cuam tshuam cov kabmob xws li hauv ncoo, sab ncej, lub log thiab txuas, thiab lwm yam. ② Casting low alloy steel. Cam khwb cia hlau uas muaj manganese, chromium, tooj liab thiab lwm yam alloying ntsiab. Tag nrho cov ntsiab lus ntawm alloying feem ntau tsawg dua 5%, uas muaj kev cuam tshuam ntau dua toughness thiab tuaj yeem tau txais cov khoom zoo dua qub los ntawm kev kho cua sov. Casting low alloy steel muaj kev ua tau zoo dua li carbon steel, tuaj yeem txo qhov zoo ntawm qhov chaw, txhim kho lub neej kev pab cuam. ③ Casting tshwj xeeb hlau. Alloyed cam khwb cia hlau refined kom haum tshwj xeeb cov kev xav tau yog ntau yam, feem ntau muaj ib los yog ntau tshaj alloying ntsiab kom tau ib tug tej yam khoom. Piv txwv li, siab manganese hlau uas muaj 11% ~ 14% manganese tuaj yeem tiv taus kev hnav, thiab feem ntau yog siv los hnav-tiv taus qhov chaw ntawm mining machinery thiab engineering machinery. Stainless hlau nrog chromium los yog chromium npib tsib xee ua lub ntsiab alloying ntsiab, siv nyob rau hauv corrosion los yog kub kub tej yam kev mob siab tshaj 650 ℃ ua hauj lwm qhov chaw, xws li tshuaj valve lub cev, twj tso kua mis, ntim los yog loj muaj peev xwm chaw nres tsheb turbine vaj tse. Cov ntsiab lus ntawm kev ua tsis tiav rau stainless hlau valve to Lub sealing nto ntawm stainless hlau valve feem ntau yog stainless hlau. Nyob rau hauv cov txheej txheem sib tsoo, vim yog kev xaiv tsis raug ntawm cov khoom sib tsoo thiab cov kev sib tsoo tsis raug, nws tsis tsuas yog txo qhov kev ua haujlwm ntawm lub valve, tab sis kuj cuam tshuam rau qhov zoo ntawm cov khoom. Raws li cov yam ntxwv ntawm cov ntaub ntawv stainless hlau, kev xaiv cov ntaub ntawv uas muaj zog siv zog thiab hnav tsis kam, thiab hauv kev ua ntawm abrasive crushing tseem cuam tshuam rau qhov zoo ntawm cov khoom. Lub valve rau lub workpiece sib tsoo yog thawj zaug ntawm tag nrho cov cuab yeej sib tsoo nesting, thiab tom qab ntawd nrog kev pab los ntawm abrasive hais thiab sib tsoo kua sib xyaw ua ke ntawm kev sib tsoo tus neeg sawv cev kom ua tiav lub hom phiaj ntawm kev sib tsoo. Sib tsoo quab yuam yog hais txog lub zog ua haujlwm ntawm chav sib tsoo qhov chaw, uas yog siv rau lub cuab yeej thiab lub zog ua haujlwm ntawm cov txheej txheem ua tiav los ntawm cov khoom abrasive. Yog tias qhov siab me me dhau lawm, cov nyhuv sib tsoo me me heev. Kev nce siab, kev sib tsoo cov nyhuv yuav txhim kho, thiab kev sib tsoo efficiency yuav raug txhim kho. Txawm li cas los xij, thaum lub siab nce mus rau ib qho txiaj ntsig, qhov tshwm sim ntawm saturation tshwm sim, thiab kev sib tsoo efficiency feem ntau ncav cuag tus nqi loj. Yog hais tias lub siab nyob rau hauv ib cheeb tsam tseem nce ntxiv, cov efficiency txo. Stainless hlau valve leakage teeb meem tsis tuaj yeem kwv yees tsis tau, peb ua cov ntsiab lus me me ntawm cov teeb meem hauv qab no, Kuv vam tias nws yuav muaj txiaj ntsig zoo rau koj cov txheej txheem siv: 1. Stainless hlau valve kev sib txuas xau ua ntej, nws yog ib qho tsim nyog los xyuas seb lub valve. thiab lub valve txuas bolt yog nruj. Yog tias lawv tsis nruj, lub nplhaib gasket thiab flange sealing groove nto tsis tag nrho ua ke, uas feem ntau ua rau to. Xyuas cov bolts thiab txiv ntseej nyob rau hauv ib ntus thiab nruj tag nrho cov bolts kom txog thaum lub gasket rings yog nruj nreem compressed. Qhov thib ob, qhov loj thiab qhov tseeb ntawm lub nplhaib gasket thiab flange sealing groove nto yuav tsum tau kuaj xyuas. Yog hais tias lub sealing kev sib cuag qhov loj me yog tsis ncaj ncees lawm los yog ntxhib heev, lub nplhaib gasket yuav tsum tau kho los yog hloov tshiab. Ntxiv mus, xyuas seb puas muaj qee qhov corrosion, xuab zeb qhov, xuab zeb qhov los yog impurities nyob rau hauv kev sib cuag ntawm lub nplhaib gasket thiab flange sealing groove. Yog tias muaj qhov tsis xws luag, nws yuav tsum tau kho, kho lossis ntxuav kom haum. 2. Stainless hlau valve cover leaks Valve cover to, mas manifested nyob rau hauv lub to ntawm packing seals. Ua ntej tshaj plaws, xyuas seb lub foob puas raug xaiv raug thiab seb nws puas phim lub sealing zawj. Yog tias muaj teeb meem zoo li no, hloov lub nplhaib sealing los yog kho lub sealing zawj. Qhov thib ob, xyuas seb qhov sealing qhov chaw puas tshwm burr, fracturing, torsion thiab lwm yam tshwm sim, rooj plaub no los hloov cov sealing qhov chaw. Tsis tas li ntawd, xyuas seb lub sealing nto ntawm txhua qhov sealing groove yog ntxhib los yog muaj lwm yam tsis xws luag. Yog tias muaj qhov tsis xws luag, qhov tsis xws luag yuav tsum raug tshem tawm lossis cov khoom puas yuav tsum tau hloov kho. Lub valve npog los yog bracket muaj packing yuav tsum tau kaw los ntawm compression. Lub installation ntawm cov pob no yuav tsum tau kuaj xyuas. Yog tias pom tias cov khoom ntim sab saud thiab sab saud tau muab tso rau sab saud, nws yuav tsum tau muab tshem tawm thiab rov nruab dua raws li txoj kev raug. Ntxiv mus, xyuas seb qhov precision ntawm qhov chaw tiv tauj ntawm cov ntsaws ruaj ruaj ua tau raws li qhov yuav tsum tau ua. 3. Stainless hlau valve lub cev kab noj hniav dlej to Valve lub cev nyob rau hauv lub casting txheej txheem, tej zaum yuav muaj cov xuab zeb qhov, xuab zeb qhov thiab lwm yam casting tsis xws luag, nws yog ib qho nyuaj rau nrhiav tau nyob rau hauv machining txheej txheem, thaum lub siab yog thov, lub zais casting. qhov tsis xws luag yuav raug nthuav tawm. Nyob rau hauv rooj plaub no, nws yog ib qho tsim nyog los kho cov vuam, kho lossis hloov kho. 4. Stainless hlau lub rooj zaum valve phaj leakage ntawm lub rooj zaum phaj yog ib qho tshwm sim thaum txhim kho lossis kev pabcuam li qub. Feem ntau, nws tuaj yeem muab faib ua ob pawg: ib qho yog sealing nto to, lwm qhov yog sealing nplhaib hauv paus to. Ua ntej ntawm tag nrho cov, qhov precision ntawm sealing nto kev sib cuag ntawm lub rooj zaum thiab lub valve phaj yuav tsum tau xyuas. Lub sealing nto yuav tsum yog yam tsawg kawg nkaus hauv av. Yog tias pom qhov tseeb ntawm qhov chaw ntxhib dhau lawm, nws yuav tsum tau muab tshem tawm thiab hauv av dua. Qhov thib ob, xyuas seb puas muaj pitting, indentation, xuab zeb qhov, tawg thiab lwm yam tsis xws luag ntawm qhov sealing nto. Hauv qhov no, lub phaj valve lossis lub rooj zaum yuav tsum tau hloov. Rau lub rooj zaum nrog lub siab lub caij nplooj ntoos hlav, lub elasticity ntawm lub caij nplooj ntoos hlav siab yuav tsum tau xyuas kom tau raws li qhov yuav tsum tau ua. Yog hais tias lub elasticity tsis muaj zog, lub siab lub caij nplooj ntoos hlav yuav tsum tau hloov kho. Tsis tas li ntawd, xyuas seb T-shaped kev sib txuas ntawm lub phaj valve thiab lub qia valve yog xoob dhau, uas ua rau lub siab ntawm lub phaj valve hauv cov txheej txheem ntawm compression. Hauv qhov no, lub phaj valve yuav tsum tau muab tshem tawm thiab kho kom haum rau qhov loj me. Lub sab hauv ntawm lub valve lub cev yog ib qho yooj yim rau nkag mus rau vuam kev soj ntsuam, hlau filings, impurities thiab lwm yam txawv teb chaws lub cev thaum lub installation txheej txheem. Xws li sundries yuav tsum tau ntxuav ua ntej installation. Yog tias koj hnov qab ntxuav lossis ntxuav tsis huv, nws yuav ua rau lub phaj valve kaw tsawg dua li qhov xav tau qhov tob thiab to, qhov no, tshem lub valve lub cev los ntxuav dua. Lub rooj zaum stainless hlau valve yuav tsum tau nruab nrog lub cuab yeej zoo tshaj plaws, thiab lub rooj zaum yuav tsum tau kuaj xyuas kom ntseeg tau tias nws tau nruab rau hauv qhov chaw. Yog hais tias cov xov tsis screwed mus rau qhov xav tau qhov tob, yuav muaj cov xau ntawm lub rooj zaum. Nyob rau hauv rooj plaub no, lub rooj zaum yuav tsum tau muab ntsia dua nrog cov cuab yeej zoo tshaj plaws.