Cavity siab yog qhov parameter nkaus xwb uas tuaj yeem qhia meej txog qhovtxhaj tshuaj molding txheej txheem; tsuas yog cov kab noj hniav siab nkhaus tuaj yeem sau cov kev txhaj tshuaj, compression, thiab siab tuav theem ntawm cov txheej txheem txhaj tshuaj molding. Kev hloov pauv hauv kab noj hniav yog cov yam ntxwv tseem ceeb uas cuam tshuam txog qhov zoo ntawm kev txhaj tshuaj molded qhov chaw (xws li qhov hnyav, zoo li, flash, dents, porosity, shrinkage, thiab deformation). Kev sau cov kab noj hniav siab tsis yog tsuas yog muab lub hauv paus rau kev tshuaj xyuas zoo tab sis kuj ua kom raug kwv yees qhov kev ua siab ntev ntawm qhov molded qhov chaw.
Pwm kab noj hniav siab yam ntxwv
Cov yam ntxwv yam ntxwv ntawm cov pwm kab noj hniav siab nkhaus yog qhia hauv daim duab 2-19. Table 2-5 qhia txog qhov hloov pauv siab ntawm txhua tus yam ntxwv taw tes lossis dhau txhua lub sijhawm.
Daim duab 2-19 Pwm kab noj hniav siab nkhaus
Table 2-5 Kev hloov siab ntawm cov yam ntxwv ntawm cov pwm kab noj hniav siab nkhaus:
| Feature Point | Kev ua | Kev tshwm sim tshwm sim | Deep Tendon Reflex | Cov leeg nqaij, lub zog nkhaus thiab cov cim tshwj xeeb cuam tshuam |
|---|---|---|---|---|
| 1 | Kev txhaj tshuaj pib | Micro-siab, thawb mus tom ntej maj mam | - | - |
| 1–2 | Melt nkag mus rau tib neeg lub cev | Sensor nyob ntawm qhov siab ntawm 1bar hauv pwm kab noj hniav | - | - |
| 2 | Melt ncav cuag lub sensor | Pwm siab pib nce | - | - |
| 2–3 | Filling ntawm kab noj hniav | Filling siab thiab clamping quab yuam cuam tshuam rau ib leeg | Feem ntau nce maj mam | ① Kev txhaj tshuaj qeeb ② Tsis tshua muaj siab ③ Sab hauv siab qis |
| Sawv sai sai | ① Kev txhaj tshuaj nrawm ② Kev txhaj tshuaj siab ③ Sab hauv siab loj ④ Ceev faj | |||
| 3 | Kab laug sab | Qhov zoo tagnrho V-P (ntim-siab) hloov taw tes | - | ① Tswj tuav tuav lub sij hawm siab ② Hloov ntxov dhau: kev poob qis hauv nruab nrab ntawm cov tuab tuab - qhov siab siab dhau lawm |
| Feature Point | Kev ua | Kev tshwm sim tshwm sim | Deep Tendon Reflex | Cov leeg nqaij, lub zog nkhaus thiab cov cim tshwj xeeb cuam tshuam |
|---|---|---|---|---|
| 3–4 (3–5) | Compression ntawm lub cev (lub cev flexion) | Feem ntau calm thaum pw tiaj tus | Tendon reflexes ib txwm los yog nce me ntsis | ① Paraplegia hauv flexion ② Tsis muaj qhov mob siab ③ Severe spasms ④ Txaus siab rau flexion contracture ntawm cov ceg qis ⑤ Muaj peev xwm autonomic dysreflexia |
| Kev nce nrawm thaum sawv ntsug | ① Paraplegia hauv kev txuas ntxiv ② Siab mob, kab mob urinary tract ③ Spasms nyob rau hauv lub duav thiab lub hauv caug ④ Txaus siab rau extension contracture | |||
| 4 | Qhov siab tshaj plaws plantar siab | Tau txais los ntawm cov yam ntxwv ntawm cov khoom siv pob taws thiab pob taws | - | - |
| Kev ntxhov siab tseem yuav txo qis | - | Hom yas | ① Haum rau luv - nrug ② Lub teeb yuag | |
| 4–6 | Siab kom meej meej pib txo | Siab crystallization | Semi- yas tawv | ① Haum rau nruab nrab - nrug ② Lub teeb yuag |
| Siab kom meej meej pib txo | Burnt nto | Rig yas | ① Haum rau ntev - nrug ② hnyav hnyav ③ Zoo zoo tuav | |
| 5 | Hauv qab tawm | Ko taw kov cov khoom (txaj txaj, sab hauv liner tsis siab compressed) | - | - |
| 6 | Qhov siab tshaj plaws thaum lub prosthesis yog thawj zaug tso rau | Tuav tus tswj ruaj khov thiab tseem ceeb | - | Lub siab xav faib yog qhov tsis sib xws, qhov loj me tsis sib xws |
Maximum pwm kab noj hniav siab
Qhov siab tshaj plaws kab noj hniav nyob ntawm qhov tuav lub siab ntawm lub tshuab txhaj tshuaj molding. Raws li pom nyob rau hauv daim duab 2-20, qhov siab dua qhov tuav tuav, lub sijhawm tuav ntev dua. Lub sijhawm tuav tshwj xeeb yog cuam tshuam los ntawm yam xws li kev txhaj tshuaj nrawm, geometry ntawm qhov molded, cov khoom ntawm cov yas nws tus kheej, thiab pwm thiab yaj kub.
Lub sij hawm siab
Lub sijhawm tuav yuav tsum ntev txaus. Piv txwv li, yog hais tias lub sij hawm tuav yog luv luv, ib tug cia li poob rau hauv pwm kab noj hniav siab yuav tshwm sim. Raws li pom hauv daim duab 2-21, qhov "tuav lub sij hawm - pwm kab noj hniav siab nkhaus" tshwm. Qhov no yog vim lub sij hawm tuav lub sij hawm luv luv, ua rau cov yaj ntws rov qab los ntawm lub rooj vag unsolidified. Qhov tshwm sim yuav yog qhov tsis xws li cov khoom tsis txaus sau thiab cov khoom ploj hauv cov khoom.
Cavity siab variation nkhaus
Feem ntau hais lus, qis qis tsis kam, qis siab poob, ua tiav siab tuav, tom qab lub qhov rooj kaw lub sijhawm, lub sij hawm shrinkage ntev dua, thiab siab dua pwm kab noj hniav ua rau siab dua.
① Cov nyhuv ntawm lub sijhawm tuav. Lub sijhawm tuav lub sijhawm luv dua, cov pwm kab noj hniav kom nrawm dua (raws li qhia hauv daim duab 2-22).
② Cov nyhuv ntawm cov yas yaj kub. Qhov siab dua qhov kub ntawm cov yas txhaj tshuaj molding tshuab nozzle inlet, qhov nyuaj dua nws yog kaw lub rooj vag, lub sij hawm pub mis ntev dua, thiab qhov me me ntawm lub siab poob. Yog li ntawd, cov pwm kab noj hniav siab dua, raws li qhia hauv daim duab 2-23.
③ Cov nyhuv ntawm pwm kub. Qhov siab dua cov pwm phab ntsa kub, qhov me me qhov sib txawv ntawm cov pwm thiab cov yas, qhov me me ntawm qhov kub thiab txias, qhov txias qeeb qeeb, lub sij hawm xa mus ntev ntawm cov yas yaj, thiab qhov me dua qhov poob siab, yog li ua rau pwm kab noj hniav ntau dua. Hloov pauv, qhov qis pwm kub, qhov qis pwm kab noj hniav siab, raws li qhia hauv daim duab 2-24.
④ Cov nyhuv ntawm hom yas. Thaum lub sij hawm tuav thiab txias txheej txheem, crystalline plastics pom qhov loj qhov ntim hloov dua li amorphous plastics, ua rau qis pwm kab noj hniav siab nkhaus, raws li qhia hauv daim duab 2-25.
5. Qhov cuam tshuam ntawm kev khiav thiab lub rooj vag ntev. Feem ntau, qhov ntev ntawm tus khiav, qhov siab poob poob ntau dua thiab qhov qis dua qhov kab noj hniav. Qhov ntev ntawm lub rooj vag tseem yog qhov sib npaug ntawm cov kab noj hniav, raws li pom hauv daim duab 2-26.
Qhov cuam tshuam ntawm kev khiav thiab lub rooj vag loj. Yog hais tias tus khiav yog me me dhau lawm, lub siab poob yuav ntau dua, txo cov kab noj hniav siab; nce lub rooj vag loj yuav txo tau lub rooj vag siab poob, ua rau cov kab noj hniav siab. Txawm li cas los xij, yog tias tus ntoo khaub lig- ntu ntu tshaj qhov muaj txiaj ntsig tseem ceeb, cov khoom siv cua sov ntawm cov yas hla lub rooj vag tsis muaj zog, cov khoom siv kub poob qis, cov viscosity nce, thiab cov nyhuv xa mus rau qhov tsis zoo, yog li txo cov kab noj hniav, raws li pom hauv daim duab 2-27.
