Yuav Siv Daim Kab Ua Li Cas Thiab Rau Kev Tsim Hluas Thermal Barrier Strip?

Qhov taw tes hloob tsim kev nyuaj siab rau cov neeg tsim kho qhov rooj hlau kaw tiv thaum sib tham—nws tso lub tshuab taw tes, txo zis khoom siv, thiab ua phom sij tus tshuab. Txhawm rau ib neeg tsim kho qhov rooj hlau kaw tiv thaum sib tham uas muaj kev paub ntau tshaj li 2006, peb tau pom thiab daws tag nrho qhov teeb meem ntawm qhov taw tes hloob. Thaum siv peb lub tshuab pheej yig (tsim los ntawm peb thiab peb lub hom tshuab tsim taw tes los tsim Polywell), peb sau saib qhov kev tsim taw tes zoo tshaj, khoom siv zoo tshaj, thiab kev pab tshuaj txwv kom tswv yim kom cov neeg siv khoom tuaj yeem tiv thaiv thiab daws teeb meem, kom lub tshuab taw tes tsim nyob ib si.

Cov teeb meem tshwm sim uas feem ntau tshwm nyob hauv qhov taw tes hloob nyob hauv kev tsim kho qhov rooj hlau kaw tiv thaum sib tham

Cov khoom siv tsis tiav hauv cov duab paub polyamide

Qhov tshwm sim ntau tshaj plaws ntawm kev plooj taw qhov chaw tso tawm yog nyuj xyoj hauv cov duab plaub twg. Lub v dust, duab rooj me me, lossis cov duab polymer uas tsis tau siv hluv tuaj yeem tso caij ruam teeb hauv qhov chaw tso tawm ntawm extrusion die, txhib qhov chaw tso tawm. Qhov teeb meem no loj dua nrog cov duab plaub twg muaj khaub ncawv tsuas yog—txhawm tias cov uas tsim los ntawm cov granulators single-screw, uas tsis tuaj yeem tshem tawm cov nyuj xyoj. Tab sis peb cov duab plaub twg, hla twin-screw extruders: ob lub screws tsis only tso cov kab rooj fiberglass zoo hauv polymer (tsim ib qho chaw nruj zoo) tab sis kuj tshem tawm cov nyuj xyoj txaus li 0.12mm los ntawm 120-mesh filter. Qhov no txhawj xeeb tias cov duab plaub twg tso rau hauv single-screw extruder (tsi muaj lwm yam khoom siv rau kev tsim kho thermal barrier strip) yog clean, txo kev plooj taw qhov chaw tso tawm los ntawm 80%.

Kev Siv Hluv Tsis Zoo Vim Kev Xwv Ntawm Extruder thiab Die

Kev tso tawm ntawm kev tso tawm tuaj yeem pheej pheej tshwm sim thaum cov ntaus hneev sib txawj thiab kev tso tawm tsis sib xws. Yog tias kev tso tawm ntawm ntaus hneev yog loj heev rau kev tso tawm ntawm kev tso tawm, lossis yog tias su temperature ntawm kev tso tawm yog too low los ntawm kev tso tawm ntawm kev tso tawm, polyamide yuav tsum tshwm sim hauv kev tso tawm. Piv txwv li, ntaus hneev sib txawj running at 60 rpm nrog kev tso tawm extrusion siv rau 40 rpm yuav tso ntau dua rau hauv kev tso tawm, causing backflow thiab kev tshwm sim. Koj tus pheej hmong tsis muaj kev pheej hmong: peb tsim ntaus hneev sib txawj thiab kev tso tawm sib txawj raws li ib qhov, sib xws ntaus hneev (3-5 kg/h rau thermal barrier strips) rau kev tso tawm ntawm kev tso tawm. Peb kuj tso kev tso tawm nrog kev tso tawm nrog kev tso tawm (set to 230-245°C rau PA66), kev tso tawm ntawm kev tso tawm thiab tsis tshwm sim hauv kev tso tawm.

Kev tso tawm ntawm kev tso tawm tsis sib xws

Thaum kawg, qhov polyamide tuaj yeem nyiag hauv qhov rooj sib thooj thiab qhov rooj saum ntawm qhov chaw tso, txav qhov chaw ntau dua thiab thaum kawg tsim qhov khoob. Qhov no tuaj yeem tshwm sim thaum cov neeg tsim khoom siv cov khoom saib xyuas nyuaj (uas tso lub residue) lossis nug mus ua kev tig qhov rooj tso tsis raug. Qhov polyamide residue yooj yim dub tshaj plaws thaum nws ngu, thiab yog tias tsis tshem tawm, nws yuav raug nqus los ua ke thiab tsim tau qhov ntxuav uas khoob qhov rooj tso. Txhawm rau peb tus kheej, qhov rooj tso uas tau saib xyuas ib zaug ib hnub xyaum muaj feem npua yog 3 zaug tshaj qhov rooj uas tau saib xyuas ib zaug ib lub caij.

Qhov kev daws teeb meem nyob rau hauv qhov rooj tso

Txhim kho qhov ceev ntawm qhov granule nrog twin-screw extrusion

Qhov kawg thawj los daws cov khoom siv tsis txaus siab yog siv cov duv zoo, meej meem—peb lub twin-screw granulation yog qhov kev daws teeb meem. Peb lub twin-screw extruders muaj lub magnetic separator nyob hauv nws tus kheeb dej uas tshem tawm cov khoom siv hluav taws xob thiab lub filter me me uas dhau tawm cov dust thiab cov duv tsis tau hlwb. Yog ib qhov feem ntawm peb qhov kev pab ib txoj hauv kev, peb xa cov duv no mus rau cov neeg siv khoom, thim siab tias lawv raug rau peb cov extrusion dies. Rau cov neeg siv khoom uas twb muaj cov khoom siv tsis txaus siab, peb xav xam tias yuav tshem cov duv khaum khaum tso cua rau cov duv uas tau granulated los ntawm peb twin-screw—qee yam yooj yim no daws li 60% ntawm cov teeb meem ntawm extrusion die blockage hauv ib lub hlis.

Thim siab tias Single-Screw Extruders thiab Extrusion Dies raug rau ib leeg

Txij li thaum muaj qhov tsawg-screw extruders tuaj yuav tsis tau tsim thermal barrier strips, sib phim nrog rau lub extrusion die yog tseem ceeb heev rau kev daws teeb meem. Yog hais tias muaj qhov blockage los ntawm kev sib txawv ntawm speed loss tsawg loss tsawg kawg, peb yuav kho qhov tsawg-screw extruder cov parameters ua ntej: rov qhov speed los sib phim nrog lub extrusion die (xws li los ntawm 50 rpm mus rau 40 rpm) thiab nce qhov temperature ntawm die los ntawm 5-10°C kom thaw qhov polyamide uas tau solidified. Cov tsawg-screw extruders ntawm peb muaj qhov digital control panel uas pab rau cov neeg tso khoom kho cov parameters no nyob zej zog. Rau cov blockages loj, peb yuav tach lub extrusion die tawm thiab siv peb cov cleaning agent xws li (tsim rau polyamide residue) kom thaw qhov buildup—cov agent no tsis cuam tshwv, yog li nws tsis ua rau hauv qhov die loss tsawg loss tsawg kawg.

Kev Tshaib Tshaib Thiab Kev Saib Xyuas Lub Tshaib

Kev saib xyuas tshaib tshaj tseem ceeb los daws thiab tiv thaiv kev ploj tawm ntawm qhov chaw tso cov duab ntxig. Peb lub chaw pab txheej xeem ib xeeb muab kev qhia rau neeg siv khoom txog kev saib xyuas qhov ntxig: tom qab 8-10 teev tsim kho, nrhiav kom ncav tawm hla lub tso cov duab ntxig, tshem qhov ntxig tso tawm, thiab siv daim nplog dej laug (los tiv thaiv kev tshem qhov ntxig) los rub tshem daim duab ntxig tawm. Txhua ob vli, ua kev saib xyuas meej meej: nyiag qhov ntxig rau hauv peb lub thawj agent dua plua dua 2 teev, tom qab ntawd lav nrog dej npuas (80-90°C) thiab sau nrog dej compressed. Peb kuj muab lub lauj kaub uas tuaj yeem ntsuas sijhawm saib xyuas thiab txheej xeem qhov ntxig—qhov no pab rau neeg siv khoom pom cov duab ntxig le le ua ntej thaum nws ploj tawm.

Peb lub chaw pab txheej xeem ib xeeb tiv thaiv kev ploj tawm dhau mus ntawm qhov chaw tso cov duab ntxig

Kev tsim qhov ntxig tso cov duab ntxig zoo li cas rau cov thermal barrier strips

Pej xeem tsev hluas ntawm peb tau tsim los ntawm kev them rau kom saib xyuas kom tsawg blockages. Txawv ntawm cov tsev hluas yooj yooj uas muaj qhov chaw sib txig ncig ncig, pej muaj qhov kaw luv kaw luv (1.2 zaug ntau dua li qhov tseem ceeb) thiab cov tog rog roog (radius ≥5mm) kom txo qhov cuam tshuam ntawm melt thiab tiv thaiv kev cuam tshuam. Qhov lip ntawm die—qhov chaw uas blockages feem ntau pib—tau sau ua roughness ntawm Ra 0.4μm lossis siab dua, yog li cov cuag tsis tuaj yeem nyob ib leeg ntau. Peb kuj ntxiv ib qhov me me "flush port" rau hauv die: yog tias muaj blockages me me, tus neeg tso khoom tuaj yeem ntxig ib qhov me me ntawm cleaning agent los ntawm qhov no tsis tas dismantling die, txuag sijhawm tsim khoom.

Kev pab txheej txheem nyob rau sab nraud

Thaum cov neeg siv khom muaj kev taw nyob rau hauv qhov chaw sov ntaus, peb tus kws tshaj lij yuav pab nrog nyob zeem meem hauv 48 teev. Peb yuav saib xyuas tag nrho qhov kev tsim kho—ntawm lub chaw sov ntaus ob txoj rooj mus rau lub chaw sov ntaus ib txoj rooj thiab lub chaw sov ntaus—to kom pom tias dab tsi yog ceev ntawm kev taw nyob. Piv txwv li, yog tias muaj kev taw nyob los ntawm qhov chaw sov ntaus raug pu tsuas, peb yuav kho nws los ntawm peb cov chaw sov ntaus zoo (150-mesh, sib phim nrog peb cov chaw sov ntaus) thiab sim qhov kev tsim kho kom meej tias tsis muaj kev taw nyob dua. Peb kuj qhuas cov neeg tshaj lij kom paub pom dab tsi yog sawv cev ntawm kev taw nyob (xws li, lwm yam ntau lossis tsis zoo) kom lawv tuaj yeem ua kom tsis txhob muaj kev taw nyob.

Kev Saib xyuas Qhov Chaw Tsom Kho

Nyias ntxiv rau peb lub tsev neeg pab pawg, peb ua neeg pib txhua sib xya hli rau kev pib cuab yeej. Ntawm no, peb nrhi nyias rau kev pib cuab yeej rau kev pib cuab yeej, kev pib cuab yeej rau kev pib cuab yeej, thiab kev pib cuab yeej. Peb kuj pib cuab yeej rau kev pib cuab yeej thiab kev pib cuab yeej rau kev pib cuab yeej yog tias xav tau. No pib cuab yeej rau kev pib cuab yeej, kev pib cuab yeej, thiab kev pib cuab yeej.

Kev tsis mob rau qhov chaw tso zog tsis yog ib qhov teeb meem tas li rau cov neeg tsim khwv tshuab sib tshooj kub. Nrog peb kev kho qhov chaw tso zog, ob lub ceev ntxig ntxag ntxig, lub ceev ntxig sib txawv, thiab kev pab txhua yam, cov neeg siv khwv tau daws teeb meem no, thiab tiv thaiv kev ploj tshiab. Peb 17 xyoo nyob hauv cheeb tsam no tau sawv ceem tias qhov tseem ceeb rau kev tsim khwv zoo yog kev sib sau ua ke—thiab peb muab qhov kev sib sau ua ke no mus rau txhua qhov chaw pab, pab cov neeg siv khwv ntaus siab rau kev tsim khwv tshuab sib tshooj kub zoo, tsis yog kev kho tshuab.