Ukuqhekeza isiphene sisiphene esiqhelekileyo kufutshane nesango kwiziphene zokubumba inaliti.Nangona kunjalo, abantu abaninzi badidekile, abakwazi ukuchonga isiphene okanye ukwenza iimpazamo zokuhlalutya.Namhlanje, siza kwenza ingcaciso.
Ibonakaliswa ngokuqhekeka okuphuma kwisango ukuya kwi-periphery, enzulu kwaye ibonakala ngokucacileyo.Ukongezelela, akusiyo i-crack, kodwa imbangela yokuqhekeka yi-anisotropy yezinto eziqinileyo.
Ngethuba lokutofa kweglue kwisango eliphakathi, amandla okuhamba kwexesha elide (amandla okuqina) kwezinto zikhulu, ngelixa amandla okuhamba okunqamlezayo (amandla okuqina) amancinci.Uxinzelelo oluveliswa yi-shrinkage luya kutsala umkhiqizo ukuphuka, kwaye ukuphuka kufuneka kuqale kwindawo ebuthakathaka, oko kukuthi, indawo enqamlekileyo yezinto eziphathekayo kufuphi nesango kunye noxinzelelo olukhulu lwangaphakathi.
I-crack defect sisiphene esibi kakhulu esibonakalayo, nesingenakwenzeka ngokupheleleyo, ngoko kufuneka sisonjululwe.Umbono umi ngolu hlobo lulandelayo:
1. Malunga nezixhobo
Ubunzima bezinto eziphathekayo sizathu esiphambili samanqaku okuxoxa, ngoko ke xa kukho inkqubo ende yeemveliso ezinkulu, zama ukuba ungakhethi izinto ezinobunzima kwaye zibe ne-elongation ephantsi kwikhefu, njenge-GPPS, i-AS, njl.
Kwimathiriyeli eqhelekileyo, ukulandelelana kokuqina ukusuka kubuthathaka ukuya komelele, kunye nokuba nokwenzeka kokuqhekeka kwenyikima ukusuka kwincinci ukuya kwenkulu malunga: PE=>TPU=>PP=>PC=>ABS=>PA=>PVC=>PET=>I-POM=>PMMA=>AS=>PS.
Ngokubanzi, izixhobo ezinamaqela aguquguqukayo zinokuphucula ipateni yokungcangcazela.Umzekelo, izinto zerabha, SEBS, EVA, K izinto ziluncedo.
2. Malunga nokungunda
Uyilo lwesango lweisitofu sokungundasisitshixo.Ngokuqhelekileyo, phantsi kwesakhiwo esinoxinzelelo olukhulu lwangaphakathi kunye nokuhamba kwexesha elide, ipateni yokungcangcazela kwesango kulula ukwenzeka.Ngoko ke, kwiimveliso ezinkulu, kulula ukwamkela uhlobo lwamasango amaninzi kunye namasango abanzi ukuze kuncitshiswe ukuxhathisa ukondla irabha kunye nokuququzelela ukuhamba.
Ngokubanzi, isango lenqaku kulula ukubonakala imigca yokungcangcazela.Isango elisecaleni, isango lefeni kunye nesango lelap zingaphantsi kancinci.Kodwa amanye amasango, afana nesango elingaphantsi kwamanzi kunye nesango le-diaphragm, akayi kusetyenziswa kwizakhiwo ezinjalo.Ngenxa yokuba uninzi lweemveliso ezinemigca yokungcangcazela ziimveliso ezicacileyo, kwaye akukho mfuneko yokusebenzisa amazibuko okuntywila okanye amazibuko ediaphragm.
3. Malunga neeparamitha: umlinganiselo weeparamitha zokusombulula amanqaku encoko yile:
① Isantya sokudubula esicothayo kunye noxinzelelo oluphantsi lokudubula
②Ixesha elifutshane lokubamba uxinzelelo
③Iqondo lobushushu lokungunda kufuneka libephezulu, njengemathiriyeli ye-PS.Ubushushu bokubumba bunokusetwa kwii-60 degrees.
4. Isishwankathelo
Ukuqhekeka sisiphene esixhaphake kakhulu kwimveliso yeemveliso ezicacileyo ezenziwe ngezinto zeGPPS.Ukuba asiyi kuqwalasela iindlela zonyango, ngaphezu kwe-50% yeziphene okanye zonke zinokuba zineziphene.Kuphela ngokulawula iindlela ezi ngasentla sinokususa iziphene kwaye siqinisekise imveliso ezinzileyo kunye nekhwalithi ephezulu.
Ixesha lokuposa: Nov-25-2022