Indlela yokubumba ifayibha ende eyomelezwe thermoplastics?

2. Amacandelo kunye noyilo lokungunda
Amalungu alungileyo kunye noyilo lokungunda lukwaluncedo ekugcineni ubude befiber yeLFRT.Ukuphelisa iikona ezibukhali ezijikeleze imida ethile (kubandakanya iimbambo, abaphathi, kunye nezinye iimpawu) kunokuphepha uxinzelelo olungeyomfuneko kwindawo ebunjiweyo kunye nokunciphisa ukunxiba kwefiber.
Amalungu aya kwamkela uyilo lodonga oluqhelekileyo kunye nobukhulu obufanayo bodonga.Ukwahluka okukhulu kubukhulu bodonga kunokukhokelela ekuzalisweni okungahambelaniyo kunye nokuqhelaniswa nefiber engafunekiyo kwicandelo.Apho kufuneka kube ngqindilili okanye kuncinci, utshintsho olukhawulezileyo kudonga lwamadonga kufuneka luthintelwe ukuphepha ukubunjwa kweendawo zokucheba eziphezulu ezinokonakalisa imicu kwaye zibe ngumthombo woxinzelelo.Ngokuqhelekileyo zama ukuvula isango eludongeni olubanzi kwaye ugeleze ukuya kwindawo encinci, ugcine ukuphela kokuzaliswa kwindawo encinci.
Umgaqo oqhelekileyo woyilo weplastiki ubonisa ukuba ukugcina ubukhulu bodonga bungaphantsi kwe-4mm (0.160in) kuya kukhuthaza ukuhamba okulungileyo kunye nokufana okufanayo kunye nokunciphisa ukuba nokwenzeka kwezibonda kunye ne-voids.Kwii-composites ze-LFRT, ubukhulu bodonga olungcono luhlala malunga ne-3mm (0.120in), kunye nobukhulu obuncinci yi-2mm (0.080in).Xa ubukhulu bodonga bungaphantsi kwe-2mm, amathuba okuqhekeka kwefiber emva kokuba izinto zingene kwi-mold yanda.
Inxalenye yinto enye kuphela yoyilo, kwaye kubalulekile ukuqwalasela indlela izinto ezingena ngayo kwi-mold.Xa abagijimi kunye namasango bekhokela izinto eziphathekayo kwi-cavity, ukuba akukho yilo oluchanekileyo, umonakalo omkhulu wefiber uya kwenzeka kule mimandla.
Xa uyila i-mold yokwenza ii-composites ze-LFRT, imbaleki ejikelezwe ngokupheleleyo iyona nto ibhetele, kwaye ubuncinci bayo ububanzi yi-5.5mm (0.250in).Ngaphandle kweembaleki ezipheleleyo ze-fillet, naluphi na olunye uhlobo lwabagijimi luya kuba neekona ezibukhali, eziza kwandisa uxinzelelo ngexesha lokubumba kunye nokutshabalalisa umphumo wokuqinisa i-glass fiber.Iinkqubo zembaleki ezishushu ezineembaleki ezivulekileyo zamkelekile.
Ubuncinci besango kufuneka bube yi-2mm (0.080in).Ukuba kunokwenzeka, beka isango ecaleni komphetho ongathinteli ukuhamba kwezinto kumgodi.Isango kumphezulu wenxalenye iya kufuneka ijikelezwe ngu-90 ° ukukhusela ukuphuka kwefiber kunye nokunciphisa iimpawu zomatshini.
Ekugqibeleni, qaphela indawo yomgca we-fusion kwaye wazi ukuba zichaphazela njani indawo apho icandelo lixhomekeke kumthwalo (okanye uxinzelelo) ngexesha lokusetyenziswa.Umgca wokudibanisa kufuneka uhanjiswe kwindawo apho inqanaba loxinzelelo lilindeleke ukuba libe liphantsi ngokucwangcisa okufanelekileyo kwesango.
Uhlalutyo lokuzaliswa kwe-mold kwikhompyutha lunokunceda ekuboneni ukuba le migca ye-weld iya kuba njani.Uhlalutyo lwe-structural finite element (FEA) lunokusetyenziselwa ukuthelekisa indawo yoxinzelelo oluphezulu kunye nendawo yomgca we-confluence enqunywe kuhlalutyo lokuzaliswa kwe-mold.
Kufuneka kuqatshelwe ukuba la macandelo kunye noyilo lokubumba ziingcebiso kuphela.Mininzi imizekelo yamalungu aneendonga ezibhityileyo, ukuqina kweendonga ezahlukeneyo, kunye neempawu ezithambileyo okanye ezintle.Ukusebenza kakuhle kufezekiswa ngokusebenzisa iikhompawundi zeLFRT.Nangona kunjalo, okukhona utenxa ngakumbi kwezi ngcebiso, kokukhona ixesha kunye nomgudu oya kuthatha ukuqinisekisa ukuba izibonelelo ezipheleleyo zobugcisa be-fayibha ende ziyafezekiswa.

2. Amacandelo kunye noyilo lokungunda
Amalungu alungileyo kunye noyilo lokungunda lukwaluncedo ekugcineni ubude befiber yeLFRT.Ukuphelisa iikona ezibukhali ezijikeleze imida ethile (kubandakanya iimbambo, abaphathi, kunye nezinye iimpawu) kunokuphepha uxinzelelo olungeyomfuneko kwindawo ebunjiweyo kunye nokunciphisa ukunxiba kwefiber.
Amalungu aya kwamkela uyilo lodonga oluqhelekileyo kunye nobukhulu obufanayo bodonga.Ukwahluka okukhulu kubukhulu bodonga kunokukhokelela ekuzalisweni okungahambelaniyo kunye nokuqhelaniswa nefiber engafunekiyo kwicandelo.Apho kufuneka kube ngqindilili okanye kuncinci, utshintsho olukhawulezileyo kudonga lwamadonga kufuneka luthintelwe ukuphepha ukubunjwa kweendawo zokucheba eziphezulu ezinokonakalisa imicu kwaye zibe ngumthombo woxinzelelo.Ngokuqhelekileyo zama ukuvula isango eludongeni olubanzi kwaye ugeleze ukuya kwindawo encinci, ugcine ukuphela kokuzaliswa kwindawo encinci.
Umgaqo oqhelekileyo woyilo weplastiki ubonisa ukuba ukugcina ubukhulu bodonga bungaphantsi kwe-4mm (0.160in) kuya kukhuthaza ukuhamba okulungileyo kunye nokufana okufanayo kunye nokunciphisa ukuba nokwenzeka kwezibonda kunye ne-voids.Kwii-composites ze-LFRT, ubukhulu bodonga olungcono luhlala malunga ne-3mm (0.120in), kunye nobukhulu obuncinci yi-2mm (0.080in).Xa ubukhulu bodonga bungaphantsi kwe-2mm, amathuba okuqhekeka kwefiber emva kokuba izinto zingene kwi-mold yanda.
Inxalenye yinto enye kuphela yoyilo, kwaye kubalulekile ukuqwalasela indlela izinto ezingena ngayo kwi-mold.Xa abagijimi kunye namasango bekhokela izinto eziphathekayo kwi-cavity, ukuba akukho yilo oluchanekileyo, umonakalo omkhulu wefiber uya kwenzeka kule mimandla.
Xa uyila i-mold yokwenza ii-composites ze-LFRT, imbaleki ejikelezwe ngokupheleleyo iyona nto ibhetele, kwaye ubuncinci bayo ububanzi yi-5.5mm (0.250in).Ngaphandle kweembaleki ezipheleleyo ze-fillet, naluphi na olunye uhlobo lwabagijimi luya kuba neekona ezibukhali, eziza kwandisa uxinzelelo ngexesha lokubumba kunye nokutshabalalisa umphumo wokuqinisa i-glass fiber.Iinkqubo zembaleki ezishushu ezineembaleki ezivulekileyo zamkelekile.
Ubuncinci besango kufuneka bube yi-2mm (0.080in).Ukuba kunokwenzeka, beka isango ecaleni komphetho ongathinteli ukuhamba kwezinto kumgodi.Isango kumphezulu wenxalenye iya kufuneka ijikelezwe ngu-90 ° ukukhusela ukuphuka kwefiber kunye nokunciphisa iimpawu zomatshini.
Ekugqibeleni, qaphela indawo yomgca we-fusion kwaye wazi ukuba zichaphazela njani indawo apho icandelo lixhomekeke kumthwalo (okanye uxinzelelo) ngexesha lokusetyenziswa.Umgca wokudibanisa kufuneka uhanjiswe kwindawo apho inqanaba loxinzelelo lilindeleke ukuba libe liphantsi ngokucwangcisa okufanelekileyo kwesango.
Uhlalutyo lokuzaliswa kwe-mold kwikhompyutha lunokunceda ekuboneni ukuba le migca ye-weld iya kuba njani.Uhlalutyo lwe-structural finite element (FEA) lunokusetyenziselwa ukuthelekisa indawo yoxinzelelo oluphezulu kunye nendawo yomgca we-confluence enqunywe kuhlalutyo lokuzaliswa kwe-mold.
Kufuneka kuqatshelwe ukuba la macandelo kunye noyilo lokubumba ziingcebiso kuphela.Mininzi imizekelo yamalungu aneendonga ezibhityileyo, ukuqina kweendonga ezahlukeneyo, kunye neempawu ezithambileyo okanye ezintle.Ukusebenza kakuhle kufezekiswa ngokusebenzisa iikhompawundi zeLFRT.Nangona kunjalo, okukhona utenxa ngakumbi kwezi ngcebiso, kokukhona ixesha kunye nomgudu oya kuthatha ukuqinisekisa ukuba izibonelelo ezipheleleyo zobugcisa be-fayibha ende ziyafezekiswa.

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