Lub hauv paus ntsiab lus tseem ceeb tom qab kub khiav ruaj khov - taw tes teeb tsa nyob rau hauv kev sib xyaw ntawm "axial limitation + radial positioning + thermal expansion expansion." Los ntawm kev siv cov khoom siv xws li cov khoom siv hauv qab, nrhiav cov rooj zaum, thiab taw tes- kev sib cuag cov kev txhawb nqa, lub kaw lus tseem nyob ruaj khov thaum lub sijhawm ob chav - kub sib dhos thiab siab - kub ua haujlwm, yog li tiv thaiv kom tsis txhob ntws los yog txeeb los ntawm thermal deformation.
I. Cov ntsiab lus tseem ceeb thiab lawv cov dej num
1. Axial Positioning: Qhov kev ncua deb L ntawm cov pwm parting kab mus rau axial nrhiav lub ntsej muag ntawm lub taub hau kub.
Qhov loj me no txhais tau tias L=L' + ΔL, qhov twg:
L' sawv cev rau qhov ntev ntawm lub nozzle ntawm chav tsev kub;
ΔL sawv cev rau axial elongation vim thermal expansion ntawm pwm kev khiav hauj lwm kub (xws li raws li cov khoom coefficient ntawm linear thermal expansion).
Kev Ua Haujlwm: Txhawm rau kom ntseeg tau tias, thaum lub sijhawm ua haujlwm siab - kub, lub taub hau lub taub hau lub rooj zaum ncaj nraim rau lub rooj vag kab noj hniav, yog li tiv thaiv kev puas tsuaj rau cov pwm (tsim los ntawm elongation ntau dhau) lossis tsis zoo sealing.
2. Spacer Pad-Core Axial Limitation Component
Nruab saum toj kawg nkaus ntawm lub nozzle, nws ua haujlwm nrog lub nozzle tus kheej axial nrhiav lub ntsej muag kom txwv nws txoj kev txav.
Qhov kev tshem tawm ntawm 0.025 hli yog sab laug ntawm chav tsev kub; Qhov no ua kom ntseeg tau tias ib zaug cov pwm kub thiab nthuav dav, cov ntaub qhwv ntsej muag yuav ruaj khov, yog li ua tiav lub xeev ntawm "thermal pre-loading."
Cov khoom siv feem ntau xaiv yog siab -kub- resistant alloy steel nrog ib tug hardness ntawm Greater los yog sib npaug rau 50 HRC los tiv thaiv crushing nyob rau hauv siab.
3. Nrhiav lub rooj zaum thiab nrhiav tus pin-Radial thiab tag nrho txoj hauj lwm tswj
Lub rooj zaum thiab cov phaj pwm nyob ruaj ruaj yuav tsum muaj qhov tshwj xeeb radial haum kam rau ua (Dimension D2) * kom paub meej qhov chaw ntawm qhov kub khiav manifold nyob rau hauv cov pwm sib dhos.
Thaum siv nrog rau qhov chaw pins, qhov kev npaj no ua tiav qhov tseeb 3-axis (X / Y / Z) qhov chaw, tiv thaiv kev sib dhos sib txawv uas tuaj yeem ua rau kev khiav eccentricity lossis kev ntxhov siab.
4. Txoj kev sib txuas ntawm qhov kub khiav Manifold thiab Pwm Plate
Point- Hu rau Kev Txhawb Nqa: Qhov sib txuas ntawm qhov kub khiav manifold thiab pwm phaj siv qhov chaw sib cuag hauv zos (nrog thaj chaw tiv tauj tsawg dua lossis sib npaug li 10%) lossis suav nrog qhov sib txawv ntawm 2-3 hli. Qhov kev tsim no txo qis cov cua sov hloov ntawm lub manifold mus rau pwm phaj thaum tib lub sijhawm tso cai rau tsis muaj kev txwv thermal expansion. Screw Locking: Hauv pwm tsim qhov twg A- phaj nta ib qho ntxig- qauv qauv, cov ntsia hlau yog siv los txuas ncaj qha rau cov kub khiav manifold phaj rau A- phaj; Txoj kev no yog tsim rau kev yooj yim installation configurations.
5. Radial haum ntawm Nozzle thiab Chaw Pwm Phaj (D1)
Ib tug meej radial haum (dimension D1-feem ntau H7 / g6 kam rau ua) yog yuav tsum tau ntawm lub nozzle thiab cov pwm nyob ruaj ruaj phaj kom paub meej nozzle perpendicularity thiab tiv thaiv eccentric loading.
Qhov ntev ntawm qhov txuas no feem ntau yuav tsum muaj ntau dua lossis sib npaug li 15 hli txhawm rau txhim kho kev taw qhia kev ruaj ntseg thiab ruaj khov.
6. Haum ntawm Nozzle Tip thiab Nchuav Pwm Insert (d)
Lub sealing haum (dim d) yog yuav tsum tau nyob nruab nrab ntawm lub taub hau ntawm lub taub hau thiab cov pwm nyob ruaj ruaj kom tiv thaiv cov khoom molten los ntawm kev xau mus rau thaj chaw sab nraum lub pwm kab noj hniav.
Cov pwm nyob ruaj ruaj yuav tsum tau ua kom tawv rau kwv yees li 50 HRC kom tiv taus yaig los ntawm qhov kub thiab txias.
II. Summary of Key Design Points
|
Tsau Point/Feature |
Muaj nuj nqi |
Tswj Cov Cai |
|
Axial nrug L |
Compensate rau thermal expansion |
L=L' + ΔL; ΔL yog xam raws li cov khoom siv coefficient ntawm thermal expansion. |
|
Kev Kho Kom Zoo |
Ua kom muaj cua sov ua ntej -loading |
Cia qhov sib txawv ntawm 0.025 hli ntawm chav tsev kub; qhov sib txawv kaw los tsim compression ntawm qhov kub thiab txias. |
|
Nrhiav lub rooj zaum + Pin |
Precise radial positioning |
D2 haum; tiv thaiv kev sib hloov thiab lateral hloov. |
|
Point Contact / Air Gap |
Txo cov cua sov hloov; tso cai rau kev nthuav dav |
Qhov chaw tiv tauj tsawg dua lossis sib npaug li 10% ntawm thaj chaw saum npoo av, lossis tuav qhov sib txawv ntawm 2-3 hli. |
|
Nozzle-D1 haum |
Txoj kev ruaj ntseg |
H7 / g6 precision kam rau ua; ntev Ntau dua lossis sib npaug li 15 mm. |
Nozzle Tip–d Haum|Tiv thaiv cov khoom xau|Sealing haum; ntxig hardness: 50 HRC.
Tswv yim tswv yim: Hauv ntau- kab noj hniav pwm lossis loj- pwm pwm, nws raug nquahu kom muab cov kev hloov pauv ywj pheej thiab nrhiav cov qauv rau txhua tus neeg lub taub hau kub khiav los tiv thaiv qhov chaw deformation los ntawm kev cuam tshuam tag nrho kev ntseeg ntawm lub cev.
