Cov khoom siv hlau gasket
1. Carbon hlau
Qhov siab tshaj plaws kev khiav hauj lwm kub yog pom zoo kom tsis txhob tshaj 538 ℃, tshwj xeeb tshaj yog thaum nruab nrab yog oxidizing. High quality nyias carbon steel phaj tsis haum rau cov khoom siv los tsim inorganic acid, nruab nrab los yog acid ntsev tov. Yog tias cov pa roj carbon steel raug kev ntxhov siab, cov khoom siv sib tsoo hauv qab dej kub yog siab heev. Cov pa roj carbon steel gaskets feem ntau yog siv rau qhov siab ntawm cov kua qaub thiab ntau cov tshuaj alkali. Brinell hardness yog hais txog 120.
2.304 stainless hlau
18-8 (chromium 18-20%, npib tsib xee 8-10%), thiab qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 760 ℃. Nyob rau hauv qhov kub ntawm - 196 ~ 538 ℃, kev nyuaj siab corrosion thiab grain ciam corrosion yog ib qho yooj yim rau tshwm sim. Brinell hardness 160.
3.304l stainless hlau
Cov ntsiab lus carbon yuav tsum tsis pub tshaj 0.03%. Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 760 ℃. Corrosion kuj zoo ib yam li 304 stainless hlau. Cov ntsiab lus tsis tshua muaj carbon tsawg txo cov nag lossis daus ntawm cov pa roj carbon monoxide, thiab cov qoob loo ciam teb corrosion yog siab dua li ntawm 304 stainless hlau. Brinell hardness yog hais txog 140.
4.316 stainless hlau
18-12 (chromium 18%, nickel 12%), ntxiv txog 2% molybdenum hauv 304 stainless hlau. Thaum kub nce, nws lub zog thiab corrosion kuj zoo. Thaum qhov kub nce, nws muaj kev nkag siab ntau dua li lwm cov hlau tsis zoo. Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 760 ℃. Brinell hardness yog hais txog 160.
5.316l stainless hlau
Qhov kev pom zoo siab tshaj plaws ua haujlwm kub yuav tsum tsis pub tshaj 760 ℃ ~ 815 ℃. Piv nrog 316 stainless hlau, nws muaj kev ntxhov siab zoo dua thiab cov qoob loo ciam teb corrosion kuj. Brinell hardness yog hais txog 140.
6.20 Nws
45% hlau, 24% nickel, 20% chromium thiab ib qho me me ntawm molybdenum thiab tooj liab. Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 760 ℃ ~ 815 ℃. Nws yog tshwj xeeb tshaj yog tsim rau cov khoom siv resistant rau sulfuric acid corrosion, nrog Brinell hardness txog 160.
7. Aluminium
Aluminium (cov ntsiab lus tsis tsawg dua 99%). Aluminium muaj kev tiv thaiv zoo heev thiab kev ua tau zoo, uas yog tsim rau kev tsim ob chav clip gaskets. Brinell hardness yog hais txog 35. Qhov siab tshaj plaws kev khiav hauj lwm qhov kub thiab txias yuav tsum tsis pub tshaj 426 ℃.
8. Liab tooj liab
Cov muaj pes tsawg leeg ntawm cov tooj liab liab yog ze rau cov tooj liab ntshiab, uas muaj cov nyiaj me me kom nws qhov kub thiab txias ua haujlwm tas mus li. Nws raug pom zoo tias qhov siab tshaj plaws ua haujlwm tsis tu ncua yuav tsum tsis pub tshaj 260 ℃. Brinell hardness yog hais txog 80.
9. tooj dag
(tooj liab 66%, zinc 34%), nws muaj corrosion kuj zoo nyob rau hauv feem ntau ua hauj lwm tej yam kev mob, tab sis nws tsis haum rau acetic acid, ammonia, ntsev thiab acetylene. Nws raug pom zoo tias qhov siab tshaj plaws ua haujlwm tsis tu ncua yuav tsum tsis pub tshaj 260 ℃. Brinell hardness yog hais txog 58.
10. Hastelloy B-2
(26-30% molybdenum, 62% nickel thiab 4-6% hlau). Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 1093 ℃. Nws muaj kev ua haujlwm zoo heev thaum tshav kub kub thiab hydrochloric acid corrosion. Nws kuj muaj kev tiv thaiv zoo rau ntub hydrogen chloride gas corrosion, sulfuric acid, phosphoric acid thiab txo ntsev tov corrosion. Nws muaj lub zog siab ntawm qhov kub thiab txias. Brinell hardness yog hais txog 230.
11. Hastelloy C-276
16-18% molybdenum, 13-17.5% chromium, 3.7-5.3% tungsten, 4.5-7% hlau, thiab tus so yog npib tsib xee). Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 1093 ℃. Nws muaj kev tiv thaiv corrosion zoo heev. Nws muaj corrosion kuj zoo heev rau txias nitric acid los yog boiling nitric acid nrog ib tug concentration ntawm 70%, zoo corrosion kuj rau hydrochloric acid thiab sulfuric acid thiab zoo heev kev nyuaj siab corrosion kuj. Brinell hardness yog hais txog 210.
12. Inconel 600
Nickel puag alloys (77% nickel, 15% chromium thiab 7% hlau). Qhov pom zoo ua haujlwm kub siab tshaj plaws yuav tsum tsis pub tshaj 1093 ℃. Nws muaj lub zog siab nyob rau hauv qhov kub thiab txias thiab feem ntau yog siv rau cov khoom siv los daws cov teeb meem kev nyuaj siab corrosion. Ntawm qhov kub thiab txias, nws muaj cov khoom ua haujlwm zoo tib yam. Brinell hardness yog hais txog 150.
13. Hwv 400
(pom zoo siab tshaj plaws kev khiav hauj lwm kub ntawm tooj liab 30% thiab npib tsib xee yuav tsum tsis pub tshaj 815 ℃. Tsuas yog muaj zog oxidizing acids, nws muaj zoo corrosion kuj rau feem ntau acids thiab bases. mercury media, yog li nws tsis haum rau cov xov xwm saum toj no Nws yog dav siv hauv cov khoom siv rau kev tsim cov hydrofluoric acid yog li 120.
14. Titanium
Qhov pom zoo ua haujlwm kub siab tshaj plaws yog tsis ntau tshaj 1093 ℃. Nws muaj zoo heev corrosion kuj nyob rau hauv kub kub tej yam kev mob. Nws paub zoo tias nws tiv taus chloride ion corrosion thiab muaj nitric acid corrosion kuj zoo heev nyob rau hauv qhov kub thiab txias ntau yam. Titanium yog tsis tshua muaj siv nyob rau hauv feem ntau alkali daws thiab yog haum rau oxidation tej yam kev mob. Brinell hardness yog hais txog 216.
Cov khoom siv tsis yog xim hlau gasket
1. Ntuj Roj Hmab NR
Nws muaj kev tiv thaiv zoo rau cov kua qaub tsis muaj zog, alkali, ntsev thiab tshuaj chloride, tab sis tsis zoo corrosion kuj rau roj thiab hnyav. Nws tsis pom zoo kom siv ozone nruab nrab. Qhov pom zoo ua haujlwm kub yog - 57 ℃ ~ 93 ℃.
2. Neoprene Cr
Neoprene yog ib hom roj hmab hluavtaws, uas yog tsim rau nruab nrab corrosion kuj nyob rau hauv acid, alkali thiab ntsev daws. Nws muaj kev tiv thaiv corrosion zoo rau kev lag luam roj thiab roj. Txawm li cas los xij, corrosion kuj ntawm muaj zog oxidizing acids, aromatic hydrocarbons thiab chlorinated hydrocarbons tsis zoo. Qhov pom zoo ua haujlwm kub yog - 51 ℃ ~ 121 ℃.
3. Nitrile butadiene roj hmab NBR
Cyano butadiene roj hmab yog ib hom roj hmab hluavtaws, uas yog tsim rau zoo corrosion kuj rau roj, hnyav, aromatic hydrocarbon, alkaline hydrocarbon, roj thiab tej yam ntuj tso roj nyob rau hauv ib tug dav kub ntau yam. Nws muaj kev tiv thaiv corrosion zoo rau hydroxide, ntsev thiab ze rau nruab nrab acid. Txawm li cas los xij, hauv nruab nrab oxidizing muaj zog, chlorinated hydrocarbons, ketones thiab lipids, lawv cov corrosion kuj tsis zoo. Qhov pom zoo ua haujlwm kub yog 51 ℃ ~ 121 ℃.
4. Fluororubber
Nws muaj kev tiv thaiv corrosion zoo rau cov roj, roj, tshuaj chloride, muaj ntxhiab thiab lipid hydrocarbons thiab muaj zog acids, tab sis nws tsis haum rau amines, lipids, ketones thiab chav. Qhov pom zoo ua haujlwm kub yog -40 ℃ ~ 232 ℃.
5. Chlorosulfonated polyethylene hluavtaws roj hmab
Nws muaj kev tiv thaiv corrosion zoo rau cov kua qaub, alkali thiab ntsev, thiab tsis cuam tshuam los ntawm kev nyab xeeb, lub teeb, ozone thiab kev lag luam roj (xws li diesel thiab kerosene). Txawm li cas los xij, nws tsis haum rau cov tshuaj tsw qab hydrocarbons, chlorinated hydrocarbons, chromic acid thiab nitric acid. Qhov pom zoo ua haujlwm kub yog -45 ℃ ~ 135 ℃.
6. Silicone roj hmab
Nws muaj qhov zoo corrosion kuj rau huab cua kub. Silicone roj hmab tsis cuam tshuam los ntawm tshav ntuj thiab ozone. Txawm li cas los xij, nws tsis haum rau chav, ketones, muaj ntxhiab hydrocarbons thiab lipid hydrocarbons.
7. Ethylene propylene roj hmab
Nws muaj kev tiv thaiv corrosion zoo rau cov kua qaub, alkali, ntsev thiab tshuaj chloride. Txawm li cas los xij, nws tsis haum rau cov roj, cov kuab tshuaj, cov roj ntsha uas muaj ntxhiab thiab cov hydrocarbons. Qhov pom zoo ua haujlwm kub yog - 57 ℃ ~ 176 ℃.
8. Graphite
Cov khoom siv yog tag nrho cov khoom siv graphite yam tsis muaj resin lossis inorganic teeb meem, uas tuaj yeem muab faib ua cov khoom siv graphite nrog lossis tsis muaj hlau. Cov khoom siv tuaj yeem sib koom ua ke los tsim cov yeeb nkab gasket nrog lub cheeb ntawm ntau tshaj 600mm. Nws muaj kev tiv thaiv corrosion zoo heev rau ntau cov kua qaub, hauv paus, ntsev, cov organic tebchaw, hloov cov kev daws teeb meem thiab txawm tias kub siab. Nws tsis tuaj yeem yaj, tab sis yuav sublimate saum 3316 ℃. Nyob rau hauv qhov kub thiab txias, cov khoom yuav tsum tau ua tib zoo siv nyob rau hauv muaj zog oxidizing nruab nrab. Ntxiv nrog rau gaskets, cov khoom siv kuj tuaj yeem siv los ua cov ntaub ntawv tsis yog xim hlau hauv cov khoom ntim thiab cov khoom siv kauv lub qhov txhab.
9. Ceramic fiber, ceramic fiber ua rau ntawm sawb
Nws yog cov khoom siv gasket zoo heev uas haum rau qhov kub thiab txias thiab tsis tshua muaj siab thiab lub teeb flange tej yam kev mob. Qhov pom zoo ua haujlwm kub yog 1093 ℃, thiab cov ntaub nplaum tsis yog xim hlau tuaj yeem ua rau hauv lub qhov txhab gasket.
10 polytetrafluoroethylene
Nws koom ua ke qhov zoo ntawm cov khoom siv yas gasket feem ntau, suav nrog qhov kub thiab txias los ntawm - 95 ℃ ~ 232 ℃. Ntxiv nrog rau cov hlau tsis muaj fluorine thiab alkali, nws muaj kev tiv thaiv corrosion zoo heev rau cov tshuaj, cov kuab tshuaj, hydroxides thiab acids. Cov khoom siv PTFE tuaj yeem ntim nrog iav kom txo qhov dej txias thiab nkag ntawm PTFE.
Post lub sij hawm: Nov-02-2021
