Ivalve yezixhobo ezikrwada ezifana nepleyiti yesekethe yeoli, ivalve yokuqukuqela enye kunye nevalve yepiston yaziswa ngokweenkcukacha

Ivalve yezixhobo ezikrwada ezifana nepleyiti yesekethe yeoyile, ivalve yokuqukuqela enye kunye nevalve yepiston yaziswa ngokweenkcukacha Ipleyiti yesekethe yeOyile, ivalve yokuqukuqela enye kunye nevalve yesango (ivalve yepiston) yenye yeendawo eziphambili zevalve, ngoko nangoko cinga uxinzelelo oluphakathi lokusebenza, izinto ezisetyenziswa ngokuqhelekileyo ekrwada kufuneka ukuhlangabezana amalungiselelo afanelekileyo "valve uxinzelelo kunye neqondo lobushushu". Intsimbi yeCarbon: Ifanelekile kuxinzelelo lwegama PN≤32.0MPa, ubushushu -30 ~ 425℃ amanzi, umphunga, igesi, i-hydrogen, i-ammonia, i-nitrogen kunye neemveliso zepetroleum kunye nezinye imidiya. Amabakala aqhelekileyo yiWC1, WCB, ZG25 kunye nentsimbi esemgangathweni 20, 25, 30 kunye nentsimbi ephantsi ye-alloy 16Mn. Intsimbi enganyangekiyo eneasidi, ilungele uxinzelelo lwegama PN≤6.4Mpa, ubushushu ≤200℃ sodium cyanide, glacial acetic acid kunye nezinye izinto... Izinto ezininzi ekrwada ukuveliswa kunye nokuveliswa kwezahlulo zevalvu, kubandakanywa neentlobo ngeentlobo zeebrendi zokukhanya. isinyithi kunye neentsimbi ezixabisekileyo kunye ne-aluminium alloy, izinto ezahlukeneyo ezingezizo ezentsimbi. Izixhobo ezikrwada zokwenziwa kweendawo zevalvu kufuneka zikhethwe ngokwezi zinto zilandelayo: 1, uxinzelelo oluphakathi, ubushushu kunye neempawu. I-2, amandla okuthwala amacandelo kwaye ihlala idlala indima kwisakhiwo sevalve. 3. Ukusebenza kakuhle kwenkqubo. 4. Phantsi kwesiseko sokuhlangabezana nale miqathango ingentla, iindleko eziphantsi kakhulu ziyafuneka. Izinto ezikrwada zepleyiti yesekethe yeoyile, ivalve yokuqukuqela enye kunye nepleyiti yevalve (ivalve yepiston) Ipleyiti yesekethe yeoyile, ivalve yokuqukuqela enye kunye nevalve yesango (ivalve yepiston) yenye yeendawo eziphambili zevalve, ngoko nangoko thatha uxinzelelo oluphakathi, olusetyenziswa ngokuqhelekileyo. imathiriyeli ekrwada kufuneka ihlangabezane namalungiselelo afanelekileyo "oxinzelelo lwe-valve kunye nenqanaba lobushushu". Izinto eziqhelekileyo ziwela kwezi zintlu zilandelayo: 1, intsimbi yentsimbi engwevu: intsimbi engwevu ifanelekile kuxinzelelo lwegama PN≤1.0MPa, ubushushu -10℃ ~ 200℃ amanzi, umphunga, igesi, igesi enolwelo kunye neoli esulungekisiweyo kunye nezinye imidiya. Intsimbi yentsimbi engwevu ibakala eliqhelekileyo: HT200, HT250, HT300, HT350. Ezimbini, intsimbi ethambileyo: ilungele uxinzelelo lwegama PN≤2.5MPa, ubushushu -30 ~ 300℃ amanzi, umphunga, igesi kunye neoli medium, brand eziqhelekileyo zezi: KTH300-06, KTH330-08, KTH350-10. Ezintathu, i-ductile casting: ilungele i-PN≤4.0MPa, ubushushu -30 ~ 350℃ amanzi, umphunga, igesi kunye neoli kunye nezinye imidiya. Iimpawu eziqhelekileyo zezi: QT400 -- 15, QT450 -- 10, QT500 -- 7. Ngenxa yezinga leteknoloji yangoku yelizwe lethu, iifektri zilungile kwaye ezinye zimbi kwaye abathengi abalula ukuzibona. Ngokwamava, kucetyiswa ukuba i-PN≤2.5MPa, i-valve okanye i-valve yensimbi ikhethwe ukukhusela. Isine, ukuxhathisa kweasidi ephezulu yesilicon ductile casting: ilungele uxinzelelo lwegama PN≤0.25MPa, ubushushu obungaphantsi kwe-120℃ medium corrosive. Ezintlanu, intsimbi ye-carbon: ilungele uxinzelelo lwegama PN≤32.0MPa, ubushushu -30 ~ 425℃ amanzi, umphunga, igesi, i-hydrogen, i-ammonia, i-nitrogen kunye neemveliso zepetroleum kunye nezinye imidiya. Amabakala aqhelekileyo yiWC1, WCB, ZG25 kunye nentsimbi esemgangathweni 20, 25, 30 kunye nentsimbi ephantsi ye-alloy 16Mn. Vi. Izinto ze-alloy: Ifanelekile kwi-PN≤2.5MPa amanzi, ulwandle, i-O2, igesi, i-oyile kunye nezinye imidiya, kunye nobushushu be-40 ~ 50℃ umphunga ophakathi, iimpawu eziqhelekileyo ziyi-ZGnSn10Zn2 (i-tin bronze), i-H62, i-HPB59-1 (ebomvu ubhedu), Qaz19-2, Qa19-4 (i-aluminiyam yobhedu). Isixhenxe, ubhedu oluqhubekayo lobushushu obuphezulu: lufanelekile kuxinzelelo lwe-PN≤17.0MPA, ubushushu ≤570℃ ukufudumeza komphunga kunye neemveliso zepetroleum. Uphawu oluqhelekileyo lune-ZGCr5Mo, 1 cr5m0. ZG20CrMoV, ZG15Gr1Mo1V, 12 crmov WC6, WC9, njl. Olona setyenziso maluhambelane noxinzelelo lwevalvu kunye neemfuno zomgangatho wobushushu. Esibhozo, intsimbi yobushushu obuphantsi, ilungele uxinzelelo lwegama PN≤6.4Mpa, iqondo lobushushu ≥ -196 ℃ butadiene, pe, igesi yendalo engamanzi, initrogen engamanzi kunye neminye imithombo yeendaba, iibrendi eziqhelekileyo) zi-ZG1Cr18Ni9, 0Cr18Ni9, 1Cr18Ni9Ti, ZG0Cr Nineant, ZG0Cr18 intsimbi, ilungele uxinzelelo lwegama PN≤6.4Mpa, ubushushu ≤200℃ sodium cyanide, i-acetic acid kunye nezinye imidiya, iimpawu eziqhelekileyo ZG0Cr18Ni9Ti, ZG0Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, ukumelana ne-asidi kunye nesisombululo se-urea I-diameter yokugqibela ye-disc ye-disc kunye ne-traging kulawulwa ngenxa yobubanzi kunye nomphetho deformation yobhedu kunye nengxubevange steel castings ivalvu ekrwada, ngoko ke akukho unyamezelo dimensional efunekayo. Umnikezeli ocetywayo kunye ne-odolo yokubeka phambi kokuthenga imathiriyeli, okanye isixa semveliso edityanisiweyo yentsalela yomatshini. Iibhobho ezibangelwa yimiphetho erhabaxa, iindawo zokugqobhoza, umatshini wokugqobhoza, okanye ukudlula kwisithuba sesikhokelo sokufa sokufa kobuchwephesha kuvunyelwe ukuba nje zisusiwe ngexesha lomatshini okanye zingenabungozi ukuhlala kwimveliso egqityiweyo (G1,G2,G3, kunye ne-G4 kwi-FIG 9). Umzobo kufuneka ubonise ukuba imiphetho ekrwada akufunekanga idlule kwi-1.5 mm Ukuqhagamshela: Ukutyhilwa kwentsimbi yobhedu kunye nemathiriyeli yealloyi yemathiriyeli ekrwada yevalvu (II) Iimpazamo zeDimensional ngaphakathi nangaphaya kwedayi - imigca yokwahlulahlula Iqela leMathiriyeli ekrwada I, iinkcukacha, kunye t kufuneka zihambelane uluhlu lokutenxa olunikwe kwiThebhile 14, ngelixa iqela lemathiriyeli ekrwada Ⅱ kufuneka lihambelane neTheyibhile 15, iqela lemathiriyeli ekrwada Ⅲ Ubalulo olukhulu lwe-engile yokubala, i-tmax, idimensional esisiseko yonyamezelo olufumanekayo lwe-dimensional ngapha kobalulo t lomgca wokwahlula. Impazamo ye-tmax ilele kwindawo yophuhliso A yoqhankqalazo olunzima I-Angle yenxalenye. Kwimeko yeengxenye ze-annular, indawo epheleleyo A ilingana nommandla we-A circle; kwimeko yeendawo ezingaqhelekanga, indawo epheleleyo A ilingana nommandla woxande olusikiwe lwangaphandle (jonga umfanekiso 4). Zonke iinkcukacha ezincinci zinempazamo efanayo ne-tmax.