Ubude bepolyurethane mesh esikhaleni kuyindlela yokukhetha imateriali ngokucophelela kanye nokulungisa imichamo yepolymers. Iindlela zokusebenzisa kwezimali zidinga ukuthi iipolyurethane zilandelane ukulayela nokuphelele kwezakhiwo, okudlula kuzame ukuvavanya imichamo yepolymers ngamathathu amaxesha.
Izililo zepolietere zibonisa ukunqanqwa kwezililo zokuvuka ngokuphelela kweemvelo ezingapheli ngokuphindwe kabini (35%) ngaphandle kwezililo zepoliestere, njengoko kubonisiwe kwiimviwo zokuvuka ngokukhawuleza (IsiJornali seElastomers & Plastics, 2023). Kodwa, iifomulayo zepoliestere zinika ukukhanyisa ngokukhulu kwezililo zokuvuka ezitholakalayo kwezimali, ke ngoko kuzithandwa kwiindlela zokukhokelela izimali.
Izinkinga eziphakathi kwezici 55%–65% zilandela ngokuhambisa izimo ephakeme kwezokuphakama. Izinga eliphezulu kwezici (>70%) liyakhanda ukukhanda kodwa liyamela ukulahleka kwezintsho ngama-18%, kuhleli kwehlukahluka kwezindlela ngokushintshashintsha.
Isinxephezo se-Polydispersity (PDI) se ≤1.3 sikhupha amaphoyinti wokukhawuleza ngesikhathi esifanayo sokukhanda. Izingxenye eziphakathi kwezingxenye ezincane zilandela ngama-42% ngokukhawuleza kwezindlela kwezokuphakama kwezokuphakama kwe-ASTM D624, okuyindlela ebalulekileyo kwezokuphakama okuphakathi kwezindlela ezincane.
Isicatshulwa esingu-12 iliyo lilinganisa amathree amaphormula wezinhlobo kwezimali kwezimali kwezimali. I-Polyether-polyol ephakathi ne-PDI esilandelayo iyasiza <3% kwezindlela ezincane ngaphandle kwezindlela ezincane, okungu-8–12% kwezinhlobo eziphambene, kuhlela ukulahleka kwezinyathelo ngama-1,200 amahora ngonyaka.
Imisebenzi ye-polyurethane screen mesh kumisebenzi yempiyela ingcinwa ngokuphelele kwezifomethi zokudityanisa. Isisekelo esithuthukisiweyo semodifaya sikhulisa ukuvuthwa, ukukhanywa, kunye nokuvuselelwa kwezimali ngelishapho lempilo, ngelokhuselela ukuthuthwa kwesikwele kizikhali ngokuchanwa.
Izilayizi zilula i-polyurethane yekugqibela kweglas, zineziphelo eziphansi kwezikhali. Izingxoxo ezithuthukisiweyo (ngokuvumeleneyo 5–15% ngeyoni) zinezivhumo ezingezantsi ukuya kuma -40 ° C ngaphandle kokuchithwa kwezivhumo. Izingxoxo eziphezulu kunezindlela zokulaywa, kudinga ukulungiswa ngokucacileyo ngokusebenzisa i-dynamic mechanical analysis (DMA).
Izifakwe zonanophathi njenge-alumina (Al₂O₃) ne-tungsten carbide (WC) zifaka amatrikisi azosekela okuthi abe ngamathuba okulandela ukugcina kwezinto ngama-58% kuzindlela zokuhlola ezinesimiso. Isifundo se-2023 ngokuxhuma kwezinhlaya zopolymers sibonise ukuthi ukwakwa ngokuphelele kwe-alumina kwe-2 wt% kubekwe ngaphansi kwezinhlobo zasepovhini kusukela kwi-1.4µm ku-0.32µm, ukunyusa isikhathi sokusebenza kwezinhlaya kuzindlela zokuhlola izindlela zokuhlola izimpahla ngama-300–400 amahora.
Izinkempela zomoya zemikhumbi (HALS) nezinhlobo zokuthatha UV ezijwayele zokuthatha izindlela zokulinda, zibekwe 92% yeqembu lokubegula ngokwokuqala emva kwezinyaka ezimbili zokubonwa kwezinyoni. Izinhlobo zokulinda njenge-Irganox 1010 zikhansela ukugcina kwezinhlobo zokugcina kusukela kusukela ku-120°C, okuyindlela ebalulekile kuzindlela zokuhlola izindlela zokuhlola izindlela zokuhlola izindlela zokuhlola.
Noma ukuba izinhlanganisi zokungeza zokwehla zase 5% SEBS zenhleza ukukhululeka kwezingxenye ngama-40%, zilula ukuphazamiseka kwekwehla ngama-22% phakathi kwezindlela ezingaphezulu kuka-50Hz. Imicu yokudaga ibonisa ukuxhanyana okungalingani lapho izinkomba ezinguquko ngaphezulu kuka-15 wt% zenza ukuba izindlela zokuthiwa kwezikhala zingase 0.8µm/cycle kuzindlela zokugcinwa eziningi.
Ukuhlelwa okuprecisiwe futhi ukulungiswa okubophezwe kubangela ngqo ukuphelelwa kwezakhiwo nokucindezela okuprecisiwe kwe i-polyurethane screen mesh izinto. Ukulawulwa okugcina kwezinhlelo kugcina ukuprecisi kwezindlela nezinjani zomkhiqizo okubaluleke kuzindlela zokuhlolwa okuprecisiwe.
Izimoldi ezinjiniywa CNC noma-±0.02 mm (isimo ISO 2768-m) zivimba ukuthwebo kwezindlela kumeshi wesikhwama se-polyurethane panokuqina okuphezulu. Ukwenjiniya kwezindlela ezingi-axisi kufezekisa izindlela zokuphuma 90° ± 0.5°, kubangela ukuprecisi kwezindlela ezingi-axisi zokwenjiniya.
Izimvambo ezobisi (CTE: 12 µm/m°C) ziguqula 23% ngokushesha kunapoliyuthane (CTE: 180 µm/m°C) ngenjekisho. Izindawo zokubhalela izimvambo zamandla zilandela ukuthi kudingekile ukuba kuncipiswe kakhulu ukukhula okungu-0.15–0.3% ekubekweni kwezimo zokugcwelela, lokhu kuthula ukuguqulwa komkhawulo ngemva kokugcwelela ngama-40%.
Izimo zemvelo ezingama-Ra ≤ 0.8 µm zikhupha amandla okuthola imvelo ngama-55% ngokulingana nezimvambo engapoliyishwa (Ra > 1.6 µm). Izingqamuzana ezingokwezifiso zikhupha izinsuku zokubhalela ngama-18% ngenkathi zithula ukugcinwa kwezicathami esincane emashodwa aphakathi ngenkathi kuthathwa imvelo.
Imicabango yokulandwa yombuso ngenkathi iyalandelela izinkolelo zokugcwelela ngokwezinsuku ezimbili, iyazi ukuthi kugcwelewanga konke ngaphakathi kwesikhathi sokugcwelela (85–95°C). Izicelo ezisha kubonisa ukuthi le micabango esebenzisa izinto zokulingana (TTT) zikhupha izimo ezungcwelewanga ngama-62% ezipolyurethane ezinezingo ezikhulu (ASTM D412-16, idatha ye-2023).
Imicamagu ye-vision esebenzayo i-machine iqukethe imicamagu yemvini ne-tech machine learning ukubheka lezi futha aphansi kwe-0.15 mm ku-mesh ya-polyurethane. Ngokwesicatshulwa kwe-ASQ ngo-2022, le ndlela isula kakhulu kwezinkinga zokubukhona ngeke ibe yilapho abantu babona ngokwamanje. Le machine ingasebenza ngemvelo kwezingu-120 kuya kwezingu-150 mesh ngohora, ibona konke okungamangaliso kanye nezindlela ezifamatshelene nezindlela ezingi ukunciphisa ukusebenza kwe-mesh ngeke kube yilapho sekwa-18% xa kusekelwa eminingeni. Lezi zinkinga zibalulekile kakhulu embonweni yempi lapho iqhutywa liyisicaba esikhulu.
Izilaser profilometers zokwanda iza 3D surface maps nge-5 µm resolution, uthola ubudheni obuhlelwa kakhulu obungasebenzi ngokuxhumana nezixhobo zokuchaza. Isicwangciso se-2023 ye-mine-grade panels ibonisa amascreen aneengcambu ezingaphezu kwe-2% enye 31% eminyaka yabantu ngaphandle kwe-60 Hz vibration loads.
Ukuchaza ngokwesilinda kwe-Ultrasonic pulse-echo ithola amasitha aphansi kwe-0.3 mm edibeneyo ukulinganisa kwezixhobo. Kwiimvavanyo yokuqinisekisa, amascreen angafumanwanga amasitha aphakathi ayafela ngokwe-45% ngaphantsi kwezilingo ezingenadhiba ngokuchaza kwescreen ngokwenqanawa yeshale gas.
Izicwangciso eziphambili zika-ASTM D3389 zikhuphela i-polyurethane screen mesh kwi:
| Ukuchaza i-Parameter | I-Standard Value | I-Performance Benchmark |
|---|---|---|
| Dynamic Load Resistance | 106cycles kwi-2 G | <5% yokwehla engenakuphinda |
| Ukukhanyisa kwekwehla ngemvula | 500 amahora @ 50 PSI | <0.8 mm ukungcola kwematerial |
I-Screens efula imibini lezicrithe zibonisa ukuba ikhulu elinesibhozo (90%) lasebenza ngokwesibonelo esiphelile kanye nokusebenza ngemva kwezinyanga ezingu-18 kuma-iron ore processing plants.
Ukusebenzisa ISO 9001:2015 kuxhomeke kakhulu kakhulu kwalithi yokuqinisa ukuphathwa kwamagatsha aphathelene ne-polyurethane. Le ndawo yasegoli kudinga amakhampani ukugcina imibiko engqamene nezinto esetshenzisiwe, indlela le process esekwa ngayo, futhu ukulandelana nezimo ephawulekayo ekwenzeni amagatsha. Le mibiko ikhushwa ukugcina izici ezithile zokuphathwa ngemathela kakhulu ngaphandle kwehlukaniswa lwamathela kancane kanye nezici zokugcina ukugcina okudingekayo ukwenza izinyathelo eziyisisekelo. Uma sibheka imininingwane yesipho ngonyaka wokuqala, lapho amakhampani angu-127 athola lezi zindlela, kungekho okungu-80% owabuyisela amaphrodukti kakhulu. Abaningi bathi le mpumelelo yavunyelwe ngokuthi kutholwe lezi zinhlelo zokuthuthukiswa ngokuvamile ezidinga yonke indawo yokuqinisa ukuphathwa.
Isikrini sokusebenza esidlovelwe kuminingi (MSHA-regulated) nokhawula phezulu (ATEX Directive 2014/34/EU) kudinga ukufakwa ngokosizo. I-polyurethane engqinelwe kuma-MSHA kufanele ithole ≤25% ukulahleka komoya (ASTM D4060) nasekuphileni amathiphu amandisa (emva kwezinsizakalo ezingaphezu kwe-5 sec ngasemthethweni UL 94 HB). Ama-grades athuthwe kuma-ATEX adweba izinto ezingokuxhuma endabeni ukuthola amagexa asezingaphezu kwe-1 GJ yokuvula.
Ukulandeleka kwemibhi nge RFID tags noma ama-QR codes kuvumela ukutholwa komnotho wokwenza - kusukela kuma-polymer lot numbers kuya kama-curing oven parameters. Abasebenzisa inkampani ephumelele kusebenzisa izinhlelo zokuthiwa kwi-blockchain ukuthiwa ngokudaliwe:
Ama-framework amakhulu athutha ukuthi kutholwe amandla amaningi:
| Ukuchaza i-Parameter | Isandhela Yeminingi | Isandhela Yemigaba |
|---|---|---|
| Ukuhlukaniswa Kwe-Particle (Joules) | 150J cyclical @ 5Hz | 75J ngokuvamile @ 3Hz |
| Ukuhlabeleka Kweslurry (g/hr) | ≤8.2 (ASTM D4060) | ≤5.9 (ASTM D3389) |
| Ukusebenza Kwemvodvo | 500hr @ 85°C/85% RH | 300 ihora @ 70°C/75% RH |
Le nca le ngemuva le kumele ukuthi iphambu lemeshi lasekile lapho litholakala kwiindlela zokuhlanganisa zase ASTM E11-20, futhi lithinte izidingo efanayo zokuphila ngokweqile.
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