Kuvhara mavharuvhu chikamu chakakosha chevharuvhu yese, chinangwa chayo chikuru ndechekudzivirira kubuda kwemvura,vharuvhuChigaro chekuvharira chinonziwo sealing ring, isangano rinosangana zvakananga nechinhu chiri mupaipi uye rinodzivirira chinhu chacho kuti chisafambe. Kana vharuvhu iri kushandiswa, pane zvinhu zvakasiyana-siyana zviri mupaipi, zvakaita semvura, gasi, mafuta, zvinhu zvinoparadza, nezvimwewo, uye zvigaro zvemavharuvhu akasiyana zvinoshandiswa munzvimbo dzakasiyana uye zvinogona kuchinjika kune zvinhu zvakasiyana-siyana.
TWSVmvura yakadzikaZvinokuyeuchidza kuti zvinhu zvemavharuvhu zvinogona kukamurwa muzvikamu zviviri, zvinoti zvinhu zvesimbi nezvinhu zvisiri zvesimbi. Zvisimbiso zvisiri zvesimbi zvinowanzo shandiswa mumapaipi pakupisa kwakajairika nekumanikidzwa, nepo zvisimbiso zvesimbi zvine mashandisirwo akasiyana-siyana uye zvinogona kushandiswa pakupisa kwakanyanya.
Rabha yekugadzira zvinhu iri nani pane rabha yechisikigo kana tichitarisa kuramba mafuta, kuramba tembiricha uye kuramba ngura. Kazhinji, tembiricha yekushanda yerabha yekugadzira zvinhu ndeye t≤150°C, rabha yechisikigo ndeye t≤60°C, uye rabha inoshandiswa kuvhara mavharuvhu eglobe, mavharuvhu egedhi, mavharuvhu ediaphragm, mavharuvhu eshavishavi, mavharuvhu ekutarisa, mavharuvhu ekupina uye mamwe mavharuvhu ane PN yekumanikidza.≤1MPa.
2. Naironi
Nylon ine hunhu hwe friction coefficient diki uye inodzivirira ngura zvakanaka. Nylon inonyanya kushandiswa kuma ball valves nema globe valves ane tembiricha t≤90°C uye kumanikidzwa kwezita PN≤32MPa.
PTFE inonyanya kushandiswa kumavharuvhu epasi rose, mavharuvhu egedhi, mavharuvhu ebhora, nezvimwewo zvine tembiricha t≤232°C uye PN yekumanikidzwa kwezita≤6.4MPa.
4. Simbi yakakandwa
Simbi inoshandiswa pakuisa mavharuvhu egedhi, mavharuvhu epasi, mavharuvhu eplug, nezvimwewo. pakupisa tembiricha≤100°C, kumanikidzwa kwezita PN≤1.6MPa, gasi nemafuta.
5. Babbitt alloy
Babbitt alloy inoshandiswa pakuvhara globe yeammonia ine tembiricha t-70~150℃uye kumanikidzwa kwezita rekuti PN≤2.5MPa.
6. Chiumbwa chemhangura
Zvinhu zvinowanzoshandiswa pakugadzira alloys dzemhangura zvinosanganisira 6-6-3 tin bronze uye 58-2-2 manganese brass. Alloy yemhangura inodzivirira kupera simba uye yakakodzera mvura neutsi hwemhepo ine tembiricha ye t≤200℃uye kumanikidzwa kwezita rekuti PN≤1.6MPa. Inowanzoshandiswa mumavharuvhu egedhi, mavharuvhu eglobe, mavharuvhu ekutarisa, mavharuvhu eplug, nezvimwewo.
7. Simbi isina ngura yeChrome
Mhando dzinonyanya kushandiswa dzesimbi isina ngura yechromium 2Cr13 ne3Cr13, dzakadzimwa uye dzakanyoroveswa, uye dzine simba rekudzivirira ngura. Inowanzo shandiswa pamavharuvhu emvura, utsi uye peturu ine tembiricha ye t≤450℃uye kumanikidzwa kwezita rekuti PN≤32MPa.
8. Simbi isina ngura yeChrome-nickel-titanium
Mhando yesimbi isingasvibiswi yechromium-nickel-titanium inowanzoshandiswa i1Cr18Ni9ti, iyo inodzivirira ngura zvakanaka, inodzivirira kukurwa kwevhu uye inodzivirira kupisa. Yakakodzera kushandiswa nemhepo inopisa uye zvimwe zvinhu zvine tembiricha inosvika t.≤600°C uye PN yekumanikidzwa kwezita≤6.4MPa, uye inoshandiswa kumavharuvhu epasi, mavharuvhu ebhora, nezvimwewo.
9. Simbi inoisa nitriding
Simbi inowanzoshandiswa kugadzira nitriding i38CrMoAlA, iyo inodzivirira ngura zvakanaka uye inodzivirira kukwenya mushure mekugadzirisa carburizing. Inowanzo shandiswa mumavharuvhu egedhi remagetsi ane tembiricha t≤540℃uye kumanikidzwa kwezita rekuti PN≤10MPa.
10. Kugadzira Boroni
Kuboroniza kunoshanda zvakananga pamusoro pechisimbiso kubva muzvinhu zviri muvharuvhu kana mutumbi wedhisiki, uye wobva wagadzirisa pamusoro pechisimbiso. Pamusoro pechisimbiso pane kuramba kwakanaka kwekupfekwa. Kune vharuvhu inoputika panzvimbo yemagetsi.
Kana vharuvhu iri kushandiswa, zvinhu zvinofanirwa kutariswa ndeizvi:
1. Kushanda kwevharuvhu kunofanirwa kuyedzwa kuti ive nechokwadi chekuti inoshanda zvakanaka.
2. Tarisa kana nzvimbo yekuvharira vharuvhu yasakara, woigadzirisa kana kuitsiva zvichienderana nemamiriro ezvinhu.
Nguva yekutumira: Ndira-04-2023
