Kev xaiv cov ntaub ntawv surfaced rau valve sealing nto

Qhov chaw sib khi ntawm cov hlau li qub (DC341X-16 Ob chav flanged eccentric npauj npaim valve) feem ntau yog tsim los ntawm (TWS valve) vuam nto. Cov ntaub ntawv siv rau kev ua kom lub valve surfacing raug muab faib ua 4 pawg loj raws li hom alloy, uas yog cov hlau cobalt-based, cov hlau nickel-based, cov hlau hlau hlau, thiab cov hlau tooj liab-based. Cov ntaub ntawv alloy no yog ua rau hauv cov electrodes, cov xov hlau vuam (suav nrog cov xov hlau flux-cored), fluxes (suav nrog cov hlau hloov pauv fluxes) thiab cov hmoov hlau hlau, thiab lwm yam, thiab raug ua kom nto los ntawm kev vuam arc tes, oxyacetylene nplaim vuam, tungsten argon arc vuam, submerged arc vuam tsis siv neeg thiab plasma arc vuam.

Kev xaiv cov khoom siv ntawm qhov chaw kaw lub valve (DC341X3-10Ob chav flanged eccentric npauj npaim valveLub nplhaib kaw lub cev) feem ntau yog raws li qhov kub thiab txias siv, kev ua haujlwm siab thiab kev ua haujlwm ntawm lub valve, lossis hom valve, cov qauv ntawm qhov chaw kaw, qhov siab tshwj xeeb ntawm kev kaw thiab qhov siab tshwj xeeb uas tso cai, lossis cov xwm txheej tsim khoom thiab kev tsim khoom ntawm lub tuam txhab, lub peev xwm ua tiav ntawm cov khoom siv thiab lub peev xwm ntawm qhov chaw thiab cov kev xav tau ntawm cov neeg siv. Kev tsim qauv zoo tshaj plaws kuj yuav tsum tau txais, thiab cov khoom siv kaw nrog tus nqi qis, cov txheej txheem tsim khoom yooj yim thiab kev ua haujlwm siab yuav tsum tau xaiv raws li qhov xwm txheej ntawm kev ua tiav ntawm （D341X3-16 Ob chav flanged concentric npauj npaim valvee) lub valve.

Qee cov ntaub ntawv siv rau kev ua kom lub valve sealing nto muaj ib daim ntawv xwb, lossis electrode lossis welding wire lossis alloy hmoov, yog li tsuas yog ib txoj kev ua kom lub valve sealing nto siv tau. Qee cov yog ua los ntawm cov hlau vuam, cov hlau vuam lossis cov hmoov alloy hauv ntau hom, xws li stellite l 6 alloy, ob qho tib si welding rods (D802), welding wires (HS111) thiab alloy hmoov (PT2102), tom qab ntawd siv tes arc welding, oxy2acetylene nplaim welding, tungsten argon arc welding, wire feeding plasma arc welding thiab hmoov plasma arc welding thiab lwm txoj kev siv tau rau kev ua kom lub valve sealing nto. Thaum xaiv cov ntaub ntawv ua kom lub valve sealing nto, peb yuav tsum xav txog kev xaiv txoj kev ua kom lub valve sealing nto nrog cov thev naus laus zis laus, cov txheej txheem yooj yim thiab kev ua haujlwm siab ntawm lub tuam txhab, kom ntseeg tau tias nws ua tau zoo hauv kev tsim khoom ntawm lub sealing nto.

Qhov chaw kaw yog qhov tseem ceeb ntawm lub valve (D371X-10 Wafer npauj npaim valve), thiab nws qhov zoo cuam tshuam ncaj qha rau lub neej ua haujlwm ntawm lub valve. Kev xaiv cov khoom siv ntawm qhov chaw kaw lub valve yog ib qho ntawm cov txoj hauv kev tseem ceeb los txhim kho lub neej ua haujlwm ntawm lub valve. Yuav tsum zam kev nkag siab yuam kev hauv kev xaiv cov khoom siv kaw lub valve.

Cuav 1: Qhov nyuaj ntawm lub valve (D371X3-16C) cov khoom siv sealing nto siab, thiab nws txoj kev hnav tsis kam zoo.

Cov kev sim qhia tau hais tias qhov kev tiv thaiv hnav ntawm cov khoom siv ntawm lub valve sealing nto yog txiav txim siab los ntawm cov qauv me me ntawm cov khoom siv hlau. Qee cov khoom siv hlau nrog austenite ua lub matrix thiab me ntsis ntawm cov qauv theem nyuaj tsis nyuaj heev, tab sis lawv qhov kev tiv thaiv hnav zoo heev. Qhov chaw sealing ntawm lub valve muaj qee qhov nyuaj siab kom tsis txhob raug mob thiab khawb los ntawm cov khib nyiab tawv hauv nruab nrab. Txhua yam xav txog, qhov nyuaj HRC35 ~ 45 yog qhov tsim nyog.

Cuav 2: Tus nqi ntawm cov khoom siv nto ntawm lub valve sealing yog siab, thiab nws cov kev ua tau zoo yog qhov zoo.

Tus nqi ntawm ib yam khoom yog nws tus kheej cov yam ntxwv ntawm cov khoom, thaum lub zog ntawm cov khoom yog nws lub cev, thiab tsis muaj kev sib raug zoo tsim nyog ntawm ob qho no. Cov hlau cobalt hauv cov hlau cobalt-based alloys los ntawm kev xa tawm, thiab tus nqi siab, yog li tus nqi ntawm cov khoom siv cobalt-based alloy yog siab. Cov hlau cobalt-based alloys yog tus cwj pwm los ntawm kev hnav tsis kam zoo ntawm qhov kub siab, thaum thaum siv rau hauv qhov kub thiab txias ib txwm thiab nruab nrab, tus nqi / kev ua tau zoo yog qhov siab. Hauv kev xaiv cov khoom siv valve sealing nto, cov khoom siv uas muaj tus nqi / kev ua tau zoo qis yuav tsum tau xaiv.

Cuav 3: Yog tias cov khoom siv sealing ntawm lub valve muaj kev tiv thaiv corrosion zoo hauv cov khoom siv corrosive muaj zog, nws yuav tsum hloov kho rau lwm cov khoom siv corrosive.

Qhov kev tiv thaiv corrosion ntawm cov ntaub ntawv hlau muaj nws tus kheej txoj hauv kev nyuaj, cov khoom siv muaj kev tiv thaiv corrosion zoo hauv cov khoom siv corrosive muaj zog, thiab cov xwm txheej hloov pauv me ntsis, xws li qhov kub lossis qhov nruab nrab concentration, qhov kev tiv thaiv corrosion hloov pauv. Rau lwm cov khoom siv corrosive, qhov kev tiv thaiv corrosion sib txawv ntau dua. Qhov kev tiv thaiv corrosion ntawm cov ntaub ntawv hlau tsuas yog paub los ntawm kev sim, thiab cov xwm txheej cuam tshuam yuav tsum nkag siab rau kev siv los ntawm cov ntaub ntawv cuam tshuam, thiab yuav tsum tsis txhob qiv tsis pom kev.