Ungaqinisekisa kanjani ukuzinza kokubunjwa komjovo wepulasitiki osobala - i-FAQ guide

Ungaqinisekisa kanjani ukuzinza kokubunjwa komjovo wepulasitiki osobala - i-FAQ guide

Isikhathi sokufunda esilinganiselwe:Imizuzu emi-4, imizuzwana engama-55

Amapulangwe epulasitiki asobala

Ngezinzuzo zesisindo esilula, ukuqina okuhle, ukulula kokubumba kanye nezindleko eziphansi, amapulasitiki ayanda ngokushintsha ingilazi ezinhlelweni eziningi, ikakhulukazi embonini yensimbi ye-optical kanye nezimboni zokupakisha, ezithuthuka ngokushesha.Kodwa-ke, amathuluzi okubona kanye nemboni yokupakisha inezidingo eziphezulu mayelana nokungafihli lutho, ukuqina, ukumelana nomthelela kanye nokuqina.Ngakho-ke, kufanele kuqashelweimpahla eluhlaza, izinqubo, okokusebenza kanye isikhuntaukuqinisekisa ukuthi imikhiqizo yepulasitiki ihlangabezana nezidingo zezingxenye.Ungakwazi futhixhumana nonjiniyela bethungqo ngokubonisana mahhala.

Ikhadi lepulasitiki elisobala

Amapulasitiki asobala kufanele okokuqala abe nezinga eliphakeme lokubonisa obala, okwesibili abe nezinga elithile lamandla nokumelana nemihuzuko, akwazi ukumelana nomthelela, akwazi ukumelana nokushisa okuhle, akwazi ukumelana namakhemikhali kahle futhi abe nezinga eliphansi lokumunca amanzi, kungaleso sikhathi kuphela lapho angakwazi khona. zihlangabezana nezidingo zokubonisa izinto obala ezisetshenziswayo futhi zihlala zingashintshile isikhathi eside.I-PPT isetshenziswa emaphaketheni nasezitsheni ngoba kufanele yelulwe ukuze kutholwe izakhiwo ezinhle zemishini.

Ukungcola okuluhlaza, komile

Phakathi nenqubo yokugcwalisa, ukunakwa kufanele kukhokhwe ekubekeni uphawu nokuqinisekisa ukuthi impahla eluhlaza ihlanzekile.Ikakhulukazi, umswakama oqukethwe ezintweni eziluhlaza ungabangela ukuwohloka ngemva kokushisa, ngakho-ke kufanele omiswe, futhi ekubunjweni komjovo, izinto kufanele zengezwe kusetshenziswa i-hopper eyomile.Elinye iphuzu okufanele liphawulwe ukuthi ngesikhathi sokumisa, umoya ofakiwe kufanele ucwengwe futhi ususwe umswakama ukuze kuqinisekiswe ukuthi awungcolisi impahla eluhlaza.

Ingcindezi yomjovo nesivinini

Okwesibili, njengoba amapulasitiki asobala anendawo ephakeme yokuncibilika nokugeleza kahle, ukuze kuqinisekiswe izinga eliphezulu lomkhiqizo, izinga lokushisa lomgqomo, ingcindezi yomjovo, isivinini somjovo kanye neminye imingcele yenqubo kufanele ilungiswe kahle ukuze ipulasitiki yomjovo igcwalise isikhunta hhayi ukukhiqizaukucindezeleka kwangaphakathi futhi kubangele ukuguqulwa komkhiqizo nokuqhekeka.

Ukuhlanzwa kwemiphongolo, izikulufu kanye nezesekeli

Ukuze uvimbele ukungcoliswa kwezinto ezisetshenziswayo kanye nesikulufu kanye ne-depressions kukhona izinto ezindala noma ukungcola, ikakhulukazi ukuqina okushisayo okuphansi kwe-resin ekhona, ngakho-ke ngaphambi kokusetshenziswa, ngemuva kokuvalwa kusetshenziselwa ukuhlanza i-agent yokuhlanza isikulufu.

Ukuma kwesikhashana ukunciphisa izinga lokushisa

Lapho stop isikhashana, ukuze kuvinjwe izinto zokusetshenziswa ku izinga lokushisa eliphezulu ukuhlala isikhathi eside, okubangela ukuwohloka, isomisi kanye izinga lokushisa emgqonyeni kufanele kuncishiswe, ezifana PC, PMMA kanye nezinye izinga lokushisa emgqonyeni kufanele kwehliswe ku-160 ℃ noma ngaphansi. .(Izinga lokushisa le-Hopper le-PC kufanele lehliswe libe ngaphansi kuka-100 ℃)

Izinkinga okufanele ziphawulwe ekwakhiweni kwesikhunta (kuhlanganise nokwakheka komkhiqizo)

Ukuvimbela ukugeleza okungekuhle kokubuya, noma ukupholisa okungalingani okuholela ekubumbeni kahle kwepulasitiki, ukonakala kwendawo kanye nokonakala.

Ngokuvamile, amaphuzu alandelayo kufanele aphawulwe ekwakhiweni kwesikhunta.

1. Ubukhulu bodonga kufanele bufane ngangokunokwenzeka futhi umthambeka wokukhulula kufanele ube mkhulu ngokwanele;2. Isigaba soguquko kufanele sibe kancane kancane Siyindilinga futhi sibushelelezi, ukuvimbela amakhona acijile.Imiphetho ebukhali ikhiqizwa, ikakhulukazi imikhiqizo ye-PC akumele ibe nezikhala;3. Umhluzi.Umgijimi kufanele abe ububanzi futhi obukhulu ngangokunokwenzeka, futhi indawo ye-sprue kufanele isethwe ngokuvumelana nenqubo yokunciphisa i-shrinkage, futhi imithombo yezinto ezibandayo kufanele yengezwe uma kunesidingo;4. Ubuso besikhunta kufanele bukhanye futhi buhlanzeke, bube nobukhulu obuphansi (okungcono kube ngaphansi kuka-0.8);5. Imbobo yokukhipha umoya.I-slot kufanele ibe yanele ukukhipha umoya kanye negesi ekuncibilikeni ngesikhathi;6. Ngaphandle kwe-PET, ukujiya kodonga akufanele kube mncane kakhulu, ngokuvamile kungabi ngaphansi kuka-1mm.

Izinkinga okufanele ziphawulwe ohlelweni lokubumba umjovo (kuhlanganise nezidingo zomshini wokubumba umjovo)

Ukuze unciphise ukucindezeleka kwangaphakathi kanye nokukhubazeka kwekhwalithi yendawo, izici ezilandelayo zenqubo yokubumba umjovo kufanele ziqashelwe.

I-1, kufanele isebenzise isikulufu esikhethekile, esinomshini wokubumba umjovo womjovo olawulwa izinga lokushisa ohlukile;2, izinga lokushisa lomjovo ku-resin yepulasitiki ayiboli indawo, kufanelekile ukusebenzisa izinga lokushisa eliphezulu lomjovo;I-3, ingcindezi yomjovo: ngokuvamile iphakeme ukunqoba ukukhubazeka kwe-viscosity encibilikayo, kodwa ingcindezi iphezulu kakhulu izoveza ukucindezeleka kwangaphakathi okubangelwa ukukhululwa okunzima nokuguqulwa;I-4, isivinini somjovo: ukuhlangabezana necala lokugcwalisa isikhunta, ngokuvamile kufanele libe phansi, kungcono ukusebenzisa umjovo wezigaba eziningi ezihamba kancane-osheshayo-ohamba kancane 5, ubambe isikhathi nomjikelezo wokubumba: esimweni sokuhlangana nokugcwaliswa komkhiqizo, akukho dent, bubble;kufanele kube mfushane ngangokunokwenzeka, ukuze kuncishiswe ukuncibilika ngesikhathi sokuhlala emgqonyeni;I-6, isivinini se-screw kanye nengcindezi yangemuva: endaweni yokuhlangana nekhwalithi ye-plasticization, kufanele ibe phansi ngangokunokwenzeka, ukuvimbela ukuthi kungenzeka ukubola;I-7, izinga lokushisa lesikhunta: ukupholisa komkhiqizo kuhle noma kubi, umthelela wekhwalithi mkhulu, ngakho-ke izinga lokushisa lesikhunta kufanele likwazi ukulawula ngokunembile inqubo.Uma kungenzeka, izinga lokushisa lesikhunta kufanele libe phezulu.

Ezinye izici

Ukuvimbela ukuwohloka kwekhwalithi engaphezulu, i-ejenti yokukhulula kufanele isetshenziswe kancane ngesikhathi sokubunjwa komjovo ojwayelekile;uma usebenzisa izinto eziphinde zasetshenziswa akumele zibe ngaphezu kwama-20%.

Ngemikhiqizo ngaphandle kwe-PET, ukwelashwa ngemuva kokwelashwa kufanele kwenziwe ukuze kuqedwe ukucindezeleka kwangaphakathi.I-PMMA kufanele yomiswe ku-70-80 ° C amahora angu-4 emjikelezweni womoya oshisayo;I-PC kufanele yomiswe emoyeni ohlanzekile, i-glycerine.Upharafini owuketshezi njll. ushisiswe ku-110-135°C futhi isikhathi sincike emkhiqizweni, kuze kufike emahoreni angaphezu kwayi-10 adingekayo.I-PET, ngakolunye uhlangothi, kufanele yenze inqubo yokwelula izinhlangothi ezimbili ukuze ithole izici ezinhle zokuwumshini.

Ukubumba umjovo kusetshenziswa kabanzi ezimbonini ezahlukahlukene futhi kungafinyelela ukukhiqizwa kwezingxenye ezingenamthungo, ukunemba kwezingxenye ngesikhathi esifushane.I-ProLean Techinikeza izinsiza zokubumba umjovo wenqwaba yezinto, okuhlanganisa amapulasitiki nama-elastomer.Kalula njelayisha imodeli yakhofuthi uthole ukucaphuna kwamahhala okusheshayo nezeluleko kumasevisi ahlobene.