Rooj vagvalvefastener, packing thiab gasket khoom xaiv fastener txheej txheem ntau lawm
Cov ntaub ntawv raw rau lub rooj vag valve fasteners, ntim cov ntaub ntawv, cov ntaub ntawv gasket thiab xaiv, fasteners feem ntau suav nrog bolts, ntau lub taub hau bolts thiab ceev. Fasteners ncaj qha dais quab yuam nyob rau hauv lub rooj vag li qub, uas yog qhov tseem ceeb heev kom tsis txhob poob ntawm kev tshaj tawm. Yog li, cov khoom siv raw xaiv yuav tsum ua kom muaj zog txaus thiab tawg toughness ntawm daim ntawv thov kub.
1. Raw khoom rau fasteners
Fasteners feem ntau suav nrog bolts, ntau lub taub hau bolts thiab ceev. Fasteners ncaj qha dais quab yuam nyob rau hauv lub rooj vag li qub, uas yog qhov tseem ceeb heev kom tsis txhob poob ntawm kev tshaj tawm. Yog li, cov khoom siv raw xaiv yuav tsum ua kom muaj zog txaus thiab tawg toughness ntawm daim ntawv thov kub.
Thaum xaiv cov ntaub ntawv fastener raws li nruab nrab siab thiab kub, lawv tuaj yeem xaiv raws li Table 5-1.
Nominal txoj kab uas hla Pg (Mpa) nruab nrab kub (℃) 300350400425450530 ntsia liaj qhov rooj
Kev kho cua sov yuav tsum tau ua thaum siv cov khoom siv carbon steel. Thaum cov khoom nruj nruj muaj cov qauv tshwj xeeb corrosion kuj, Cr17Ni2, 2Cr13, 1Cr18Ni9 thiab lwm yam stainless acid resistant steel tuaj yeem xaiv.
Thib ob, muab cov khoom siv raw
Ntawm lub valve lub cev, cov ntim khoom yog siv los sau qhov chaw sab hauv tsev ntawm ib qho dej ntws valve packing chamber kom tsis txhob muaj xov xwm tawm los ntawm lub rooj zaum valve thiab ib leeg ntws valve packing chamber sab hauv tsev.
1. Qhov kev thov rau fillers
1) Zoo corrosion kuj, packing thiab nruab nrab kev sib cuag, yuav tsum muaj peev xwm tiv thaiv corrosion ntawm nruab nrab.
2) Compact qauv, packing tsis xau raws li qhov nruab nrab thiab ua haujlwm kub.
3) Tsis tshua muaj kev sib txhuam los txo qhov kev sib txhuam torque ntawm lub rooj zaum thiab ntim khoom.
2, hom kev ntim khoom
Kev ntim khoom tuaj yeem muab faib ua cov ntim yas mos thiab cov ntim nyuaj ob hom:
1) Cov hnab yas mos: nws yog ua los ntawm cov khoom cog ntsuab, uas yog, linen, paj rwb, linen, thiab lwm yam, los yog cov ntxhia, uas yog iav fiber ntau paj rwb, los yog iav fiber ntau paj rwb nrog hlau hlau thiab sab nraud coated flake graphite hlua woven, thiab hauv av rau hauv txoj kev muab tub lim, thiab cov cib fim tshiab ntawm cov khoom siv graphite hloov tau yooj yim hauv xyoo tas los no. Cov khoom cog ntsuab ntim cov khoom siv tau zoo dua, feem ntau yog siv rau qhov tsis tshua muaj siab li qub hauv 100 ℃; Mineral packing yog tsim rau 450-500 ℃ rooj vag valve. Nyob rau hauv xyoo tas los no, kev tsim cov yas O-ring raws li muab tub lim yog maj mam nrov, tab sis qhov nruab nrab kub yog feem ntau tswj nyob rau hauv 60 ℃. Kev ntim khoom nyob rau hauv qhov kub thiab txias siab valve kuj yog ua los ntawm cov ntshiab asbestos thiab flake graphite hmoov.
2) Hard packing: packing ua los ntawm cov ntaub ntawv hlau los yog hlau tov nrog asbestos, siab purity graphite thiab polytetrafluoroethylene nias calcination thiab tsim packing, hlau packing daim ntawv thov tsawg dua.
3, kev xaiv cov khoom ntim
Kev xaiv cov muab tub lim yuav tsum yog nyob ntawm qhov nruab nrab, qhov kub thiab txias los xaiv, cov khoom siv raw muaj cov ntsiab lus hauv qab no:
1) Roj rau daim ntaub asbestos, tuaj yeem xaiv raws li Table 5-2.
2) Cov ntaub yas asbestos: tuaj yeem xaiv raws li Table 5-3.
3) High purity graphite asbestos daim ntaub: asbestos daim ntaub coated rau hauv flake graphite, qhov kub thiab txias yuav siv tau saum toj no 450 ℃, lub siab ua hauj lwm yuav ncav cuag 16Mpa, feem ntau haum rau siab zog chav. Tsis ntev los no thiab maj mam siv lub siab tus neeg laus font muab tub lim, lap speed placement, compact structure.
4) polytetrafluoroethylene: Qhov no yog ib qho kev siv ntau dua nyob rau theem no. Tshwj xeeb tshaj yog muaj nyob rau ntawm qhov nruab nrab corrosive, tab sis qhov kub tsis tuaj yeem siab tshaj 200 ℃. Feem ntau, nws yog ua los ntawm cov neeg tua hluav taws los yog lub tsheb puag ncig, raws li pom hauv daim duab 5-1 hauv qab no.
Lub npe qauv tsos
Loj (aperture lossis square ncig)
Muaj kev txwv siab kgf/cm
Muaj qhov ntsuas kub (℃)
Siv rau chav dej, roj, khoom siv roj av Y5.6.8.10.13
16.19.22.25 N3.5.6.8.10.13 dr hab
16.19.22.25 YS350F, Y, N3.5.6.8.10.13
16.19.22.25.45350YS250F, Y, N3.5.6.8.10.13.
16.19.22.2545250 dr hab
Faj seeb: Tus naj npawb F qhia tias square, dhau-core los yog ib qho rau ob txoj hlua khi; Y qhia hais tias nws yog puag ncig, nrog ib tug twisted mandrel nyob rau hauv nruab nrab thiab ib mus rau ob txheej ntawm braid sab nraum; N txhais tau tias twisted.
Lub npe qauv
Specifications (qauv ncaj los yog square ncig)
Muaj kev txwv siab kgf/cm
Muaj qhov ntsuas kub (℃)
Lub hom phiaj tseem ceeb ntawm plastics
asbestos
Ntim XS4503.4.5.6.8.10.13.16.19.22.25.2860450 XS35045350XS25045250 rau chav, roj khoom
Ntsia Hlau hom: lub taub hau tshuab rubbing tshuab; Yuav muaj ib tug tuag ob lub tshuab punch, ob tuag plaub punch tshuab, peb tuag peb punch tshuab, plaub tuag plaub punch tshuab, tsib tuag tsib punch tshuab, rau tuag rau punch tshuab, thiab txhua yam raws li qhov loj ntawm ib tug series. , xws li tuag ob lub punch rau hauv: 0# tshuab, feeb tshuab, 2 txuas ntxiv, ob thiab ib nrab tshuab, peb txuas ntxiv no ...
Cov khoom siv tseem ceeb rau kev tsim cov fasteners:
1, ntsia hlau chav kawm: lub taub hau tshuab rubbing tshuab; Yuav muaj ib tug tuag ob lub tshuab xuas nrig ntaus, ob tuag plaub xuas nrig ntaus tshuab, peb tuag peb xuas nrig ntaus tshuab, plaub tuag plaub xuas nrig ntaus tshuab, tsib tuag tsib xuas nrig ntaus tshuab, rau tuag rau xuas nrig ntaus tshuab, thiab txhua tus muab faib ua ib tug series raws li lub loj, xws li ib tug tuag ob punching rau hauv: 0# tshuab, feeb tshuab, 2 extension, ob thiab ib nrab tshuab, peb extension;
2, txiv ntseej: txiv ntseej txias extrusion txoj kev tshuab tsis siv neeg tapping tshuab;
3. Gasket hom: high-speed punch;
4, hniav: hlau dov tshuab;
5, tus pin chav kawm: CNC tshuab dhos CNC tshuab dhos CNC sib tsoo tshuab;
6, tig qhov chaw: CNC sib tsoo tshuab; Chaw ua haujlwm;
Raws li kev siv thev naus laus zis, fasteners tuaj yeem muab faib ua kub forging thiab txias forging, uas yog, kub pier thiab txias pier (extrusion processing).
Raws li kev sim txias extrusion (txias saum toj kawg nkaus forging), nws tau txiav txim siab tias:
Feem ntau, cov ntaub ntawv raw rau sab nraud hexagon taub hau bolts yuav tsum xyuas kom meej tias qhov siab yog tsawg kawg yog 1/20 (l [tus txheeb ze qhov siab ntawm ib tus qauv] kev xeem] daim phiaj, thiab rau cov txiv ntoo txias, txias extruded hexagon screws thiab Fabkis bolts, peb yuav tsum. xyuas kom meej tias qhov kev ntsuas siab sib txawv 11311 ncav cuag tus qauv.
Specification ntawm raw cov ntaub ntawv rau txias thiab kub upsetting txheej txheem
Lub hardness ntawm cov txheej txheem ntawm cov khoom txias pier yog me ntsis qis, thiab cov yas yog zoo dua, uas yog conducive rau lub plasticity deformation thaum lub txias pier yog tsim thiab ua tiav thiab dov. Cov pa roj carbon tsawg lossis tsis tshua muaj kev tiv thaiv ib puag ncig, cov pa roj carbon nruab nrab yuav tsum tau muab tshem tawm, quenching hardness Cov tsos ntawm cov txheej txheem raw cov ntaub ntawv hauv cov txheej txheem kub kub yog qhov zoo dua. Cov cua kub tsis tuaj yeem tshwm sim ntxhib siv lead ua mob, txwv tsis pub cov txheej txheem oxidation ncaj qha cuam tshuam rau cov khoom zoo.
Fastener ntau lawm thiab ua cov kauj ruam: disk caij - quenching - pickling passivation - kos hlau - lub taub hau - dov cov hniav - txheej txheem kev kho cua sov - electroplating txheej txheem - sab nraud ntim Qhov no yog ib tug bolt kev koom ua ke txheej txheem.
Disk unit: yog hais txog cable koj yuav rov qab
Quenching: Ua kom lub hardness ntawm lub cable. (Cov txheej txheem no yog qhov tseem ceeb, thiab tam sim no siv nyob rau hauv qhov kub thiab txias tas li de-stress annealing rauv)
Pickling passivation: yog ntxuav tawm cov xeb, residue ntawm qhov chaw ntawm lub cable
Rub cov hlau: rub cov hlau tawm ntawm qhov aperture koj yuav tsum tau ua lub ntsia liaj qhov rooj
Lub taub hau: Lub taub hau ntawm lub ntsia liaj qhov rooj yog extruded los ntawm txias extrusion txoj kev. (Yog hais tias nws yog ntau tshaj M20 bolts, nws yuav tsum yog liab, uas yog, koj yuav tsum tau sov so thiab ces ntaus lub taub hau, tab sis hom ntsia liaj qhov rooj nto tsis zoo nkauj heev, vim hais tias ntawm oxide txheej)
Hniav forging: yog hais txog qhov yuav tsum tau sib nrug ntawm cov hniav thiab cov ntsia hlau
Cov txheej txheem kev kho cua sov: Cov txheej txheem no yog qhov tseem ceeb tshwj xeeb los qhia meej txog qib kev ua haujlwm ntawm bolt
Electroplating txheej txheem: Qhov saum npoo ntawm cov hlau yog kho rau qhov xav tau xim xim
Post lub sij hawm: Feb-21-2023
