Valve sealing nto, qia thiab qia txiv ntoo cov khoom piav qhia valve localization yog tos rau lub tuam txhab valve los ntsuas qhov tsim nyog

Valve sealing nto, qia thiab qia txiv ntoo cov khoom piav qhia valve localization yog tos rau lub tuam txhab valve los ntsuas qhov tsim nyog

Lub sealing nto yog lub ntsej muag ua haujlwm tseem ceeb ntawm lub valve. Qhov zoo ntawm qhov sealing nto yog cuam tshuam nrog kev pabcuam lub neej ntawm lub valve. Feem ntau, cov khoom siv sealing yuav tsum xav txog kev tiv thaiv corrosion, abrasion tsis kam, yaig tsis kam, oxidation kuj thiab lwm yam. Lub qia txiv ntoo yog ncaj qha mus rau axial quab yuam ntawm qia thaum lub valve qhib thiab kaw thiab yuav tsum muaj qee lub zog. Nyob rau tib lub sijhawm, nws yog threaded nrog lub qia, xav tau ib qho me me coefficient ntawm kev sib txhuam, tsis muaj xeb thiab zam qhov tshwm sim ntawm tom. Qe nuts nrog MELON CLUTCHES rau kev siv ntawm hluav taws xob valve yuav tsum tau cua sov kho rau HIGH HARDNESS los yog nto HARDNESS.
Sealing khoom nto
Lub sealing nto yog lub ntsej muag ua haujlwm tseem ceeb ntawm lub valve. Qhov zoo ntawm qhov sealing nto yog cuam tshuam nrog kev pabcuam lub neej ntawm lub valve. Feem ntau, cov khoom siv sealing yuav tsum xav txog kev tiv thaiv corrosion, abrasion tsis kam, yaig tsis kam, oxidation kuj thiab lwm yam.
Feem ntau muaj ob pawg loj:
(1) Cov khoom siv mos
1, roj hmab (xws li roj hmab butadiene, fluorine roj hmab, thiab lwm yam)
2, yas (PTFE, nylon, thiab lwm yam)
(2) cov ntaub ntawv nyuaj sealing
1, tooj liab alloy (rau tsis tshua muaj siab valve)
2, chromium stainless hlau (rau zoo tib yam siab siab valve)
3, Sitai alloy (rau siab kub thiab siab siab li qub thiab muaj zog corrosion li qub)
4. Nickel puag alloy (rau corrosive media)
Cov khoom siv qia
Lub qia yog raug rub, nias thiab torsional quab yuam thaum lub valve qhib thiab kaw, thiab nyob rau hauv kev sib cuag ncaj qha nrog nruab nrab thaum
Kuj tseem muaj kev cuam tshuam kev sib cuam tshuam ntawm qhov sib txawv thiab ntim khoom, yog li cov khoom siv hluav taws xob yuav tsum muaj lub zog txaus thiab cuam tshuam ntawm qhov tshwj xeeb kub
Toughness, corrosion kuj thiab abrasion kuj, thiab zoo technology.
Cov khoom siv stems yog raws li nram no.
Ua ntej, carbon hlau
Thaum siv hauv dej thiab chav nruab nrab uas tsis tshua muaj siab thiab nruab nrab kub tsis tshaj 300 ℃, A5 hom carbon hlau feem ntau xaiv.
Rau nruab nrab siab thiab nruab nrab kub tsis tshaj 450 ℃ dej, chav nruab nrab, feem ntau xaiv 35 zoo carbon steel.
Ob, hlau alloy
Rau nruab nrab siab thiab siab siab, nruab nrab kub tsis tshaj 450 ℃ dej, chav, roj thiab lwm yam xov xwm, feem ntau xaiv 40Cr (chromium hlau).
Rau kev kub siab, nruab nrab kub tsis tshaj 540 ℃ dej, chav thiab lwm yam xov xwm, tuaj yeem xaiv 38CrMo>
Rau kev kub siab, nruab nrab kub tsis tshaj 570 ℃ chav nruab nrab, feem ntau xaiv 25Cr2MoVA chromium molybdenum vanadium hlau.
Peb, stainless acid hlau
Rau nruab nrab siab thiab siab siab, nruab nrab kub tsis tshaj 450 ℃ tsis-corrosive nruab nrab thiab tsis muaj zog corrosive nruab nrab, tuaj yeem xaiv 1Cr13, 2Cr13, 3Cr13 chromium stainless hlau. Rau corrosive media, Cr17Ni2, 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Cr18Ni12Mo3Ti thiab lwm yam stainless acid-resistant steel thiab PH15-7mO nag lossis daus hardening hlau tuaj yeem xaiv.
Plaub, kub resistant steel
4Cr10Si2Mo Martensite hom cua sov-resistant hlau thiab hlau yuav siv tau thaum nruab nrab kub tsis ntau tshaj 600 ℃
4Cr14Ni14W2Mo Austenitic yam kub resistant steel.
Stem txiv ntoo khoom
Lub qia txiv ntoo yog ncaj qha mus rau axial quab yuam ntawm qia thaum lub valve qhib thiab kaw thiab yuav tsum muaj qee lub zog. Nyob rau tib lub sijhawm, nws yog threaded nrog lub qia, xav tau ib qho me me coefficient ntawm kev sib txhuam, tsis muaj xeb thiab zam qhov tshwm sim ntawm tom.
Ua ntej, tooj liab alloy
Copper alloy kev sib txhuam coefficient me me, tsis muaj xeb, yog ib qho ntawm cov khoom siv feem ntau. Rau PG1.6mpa tsis tshua muaj siab li qub ZHMN58-2-2 cam khwb cia tooj dag siv tau. Rau PG16-6.4mpa nruab nrab siab valve siv tau ZQ>
Thib ob, cov hlau
Thaum cov kev ua haujlwm tsis tso cai rau kev siv tooj liab alloy, tuaj yeem xaiv 35, 40 zoo carbon steel, 2Cr13, 1Cr18Ni9, Cr17Ni2 thiab lwm yam stainless acid-resistant steel.
Cov xwm txheej ua haujlwm tsis raug tso cai xa mus rau cov hauv qab no.
1, rau hluav taws xob valve, valve qia txiv ntoo nrog melon clutch, yuav tsum tau kho cua sov kom tau siab hardness los yog nto hardness.
2, qhov nruab nrab ua haujlwm lossis ib puag ncig ib puag ncig tsis haum rau kev xaiv ntawm tooj liab alloy, xws li tooj liab corrosion ntawm ammonia nruab nrab. Thaum xaiv steel qia txiv ntoo, tshwj xeeb yuav tsum tau them rau qhov tshwm sim ntawm xov tom.
Ob peb xyoos tom ntej no yuav yog lub valve kev lag luam lub sijhawm poob siab ceev, qhov tshwm sim ncaj qha ntawm qhov kev kub ceev no yog qhov tam sim no ntawm polarization hauv lub valve txee hom chaw pw hav zoov kom nthuav dav.
Nws xav tias nyob rau hauv ob peb xyoos tom ntej no yuav muaj sia nyob tiag tiag hauv kev lag luam valve lag luam tsis muaj ntau.
Tab sis lub valve kev lag luam no high-speed shock yuav coj tau zoo, cov txiaj ntsig poob siab yuav ua rau kev lag luam ua lag luam muaj txiaj ntsig.