Ko ngā mīhini whakaputa tīwiri-rua ngā mīhini tino kaha i roto i te ao whakakotahi, ā, ko ō rātou mahi pai me te āheinga ki te whakarite ngā painga o tō rātou tūranga. Ka taea e ia te whakakotahi i ngā tāpiringa me ngā whakakī rerekē hei whakatutuki i ngā āhua me ngā āhuatanga pirepire rerekē me te mahi rerekē.
Ahakoa e taea te tukatuka i ngā momo tāpiringa me ngā whakakī mō te whakaputanga, ko ētahi tikanga mō te whiwhi i ēnei hua ka arahi pea ki ngā take poke me te iti o te rere, te iti rānei o te pēhanga i roto i ngā wāhi maha puta noa i te oko.
I roto i tētahi tukanga tonu pērā i te extrusion, ka pā kino pea te poke. Ko te whakakore i te extrusion he uaua ake i ētahi atu tukanga, ā, he nui ake ngā wero e pā ana ki ngā extruders takirua-wira nā te mea he uaua ake te pūnaha i te extruders kotahi-wira.
Tuatahi, me titiro tātou ki ngā tikanga horoi o ngā taputapu whakaputa tīwiri-rua.
Tikanga horoi kapia：
Ko te whakamahi i te kapia polyester, te kapia epoxy rānei mō te horoi he mea whakamahi whānuitia mō te horoi i ngā taputapu hou, i muri rānei i te whakamahinga o te extruder mō tētahi wā, nā te mea kei te toe tonu ētahi rauemi ki runga i te tīwiri, i te oko rānei me te gel, ka puhoi te tere o te extrusion rauemi, ā, he nui te rerekētanga tae o ngā momo whakarerekētanga tae. Ka taea te whakamahi i tēnei tikanga. I ēnei rā, me te ōhanga taonga kua tino whanake, kāore he hapa o ngā momo horoi tīwiri (ngā rauemi horoi tīwiri) kei te mākete, ko te nuinga he utu nui, ā, he rerekē ngā pānga.
Ko te whakamahi i ngā kaihoroi arumoni ka whakawhirinaki ki ngā kaihanga me ngā tikanga whakaputa rerekē; ka taea hoki e ngā kamupene tukatuka kirihou te whakamahi i ngā kapia rerekē hei rauemi horoi tīwiri i runga i ā rātou ake tikanga whakaputa, ka taea ai te penapena i te nui o ngā whakapaunga mō te waeine.
Ko te taahiraa tuatahi ki te horoi i te tīwiri ko te whakaweto i te mono whāngai, arā, te kati i te putanga whāngai i raro i te hopper; kātahi ka whakaitihia te tere o te tīwiri ki te 15-25r/min, ka pupuri tonu i tēnei tere kia mutu rā anō te rere o te rewa i te pito o mua o te mate. Me whakatakoto te pāmahana o ngā rohe whakamahana katoa o te oko ki te 200°C. Kia tae te oko ki tēnei pāmahana, tīmata tonu te horoi.
I runga anō i te tukanga whakaputa (tērā pea me tango te mate hei whakaiti i te tūponotanga o te pēhanga nui i te pito o mua o te extruder), me mahi te horoi e te tangata kotahi: ka tirohia e te kaiwhakahaere te tere me te taipana o te tīwiri mai i te papa whakahaere, ā, ka tirohia te pēhanga whakaputa kia kore ai e tino teitei te pēhanga o te pūnaha. I te wā katoa o te tukanga, me pupuri te tere o te tīwiri i roto i te 20r/min. I te whakamahinga o ngā pane mate pēhanga iti, kaua e tangohia te pane mate hei horoi i te tuatahi. Kati te tango tonu i te pane mate ina kua huri katoa te extrudate mai i te kapia tukatuka ki te kapia horoi, kātahi ka tīmata anō te tīwiri (tere i roto i te 10r/min) kia rere ai te kapia horoi toenga.
Aratohu wetewete
1. Tāpirihia ā-ringa te rauemi horoi mai i te putanga tukunga kia rite te tae o te rīpene rauemi kua puta ki te tae o ngā pirepire rauemi horoi, kati te whāngai, ringihia te rauemi, ā, kati te hurihanga o te tīwiri whakaputa tīwiri takirua;
2. Whakatuwheratia te pane o te tīwiri extruder ka tīmata te horoi;
3. Tahurihia te tīwiri whakaputa tīwiri-rua ka tangohia te pereti kōhao hei tuku i te toenga o te rauemi horoi i roto i te oko, hei horoi hoki i te pereti kōhao;
4. Kati te tango i te tīwiri kia tirohia ai mēnā kua horoia, kātahi ka tangohia ā-ringa te toenga o te tīwiri. Tāuta anō te tīwiri; tāpirihia he rauemi hou hei horoi i te toenga o te horoi ki roto i te oko, ā, whakamutua te hurihuri o te tīwiri;
- Tāutahia te pereti kōhao me te pane mate o te taputapu whakaputa tīwiri-rua hei whakaoti i te mahi horoi o te taputapu whakaputa tīwiri-rua.
Tikanga horoi i tunua ki te ahi:
Ko te whakamahi i te ahi, i te tunu rānei hei tango i te kirihou e mau ana ki te tīwiri te tikanga tino noa, tino whai hua hoki mō ngā waeine tukatuka kirihou. Whakamahia he rama pupuhi hei horoi i te tīwiri i muri tonu i te whakamahinga, nā te mea i tēnei wā ka haria e te tīwiri te wera mai i te wheako tukatuka, nō reira he ōrite tonu te tohatoha wera o te tīwiri. Engari kaua rawa e whakamahi i te mura acetylene hei horoi i te tīwiri. Ka taea e te pāmahana o te mura acetylene te eke ki te 3000°C. Ko te whakamahi i te mura acetylene hei horoi i te tīwiri ehara i te mea ka whakangaro noa i ngā āhuatanga whakarewa o te tīwiri, engari ka pā nui hoki ki te manawanui ā-pūkaha o te tīwiri.
Ki te huri te mura o te acetylene ki te kikorangi pumau i te wa e tunua ana tetahi wahi o te tīwiri, ko te tikanga kua rereke te hanganga whakarewa o tenei wahi o te tīwiri, ka heke te ātete kakahu o tenei wahi, tae atu ki te puta o te karawarawa i waenga i te paparanga ārai-kakahu me te matihiko. Te kiri whakarewa. Hei tāpiri, ko te whakamahana ā-rohe me te mura acetylene ka wera rawa te taha kotahi o te tīwiri, ka piko te tīwiri. Ko te nuinga o ngā tīwiri he mea hanga ki te maitai 4140.HT, ā, he tino kikī ngā ātete, i roto i te 0.03mm.
Ko te tika o te tīwiri kei roto i te 0.01mm te nuinga. Ina tunua te tīwiri, ā, ka whakamataohia e te mura acetylene, he uaua ki te hoki ki tōna tika taketake. Tikanga tika me te whai hua: Whakamahia he rama pupuhi hei horoi i te tīwiri i muri tonu i te whakamahinga. Nā te mea kei te kawe te tīwiri i te wera mai i te tukanga tukatuka i tēnei wā, he ōrite tonu te tohatoha wera o te tīwiri.
Tikanga horoi wai:
Horoi tīwiri: Ka whakamahia e te mīhini horoi tīwiri aunoa te kaha nekeneke o te hurihanga wai me te kaha tauhohenga o te hurihanga tīwiri hei whakatutuki i te tangohanga 360-tohu me te kore he koki mate. He tino pai te mahi, ā, kāore e kino te hanganga ā-tinana o te tīwiri. Ka whakatinanahia e ia te hangarau horoi tīwiri hou i roto i te huarahi e pai ana ki te taiao, whai hua me te penapena hiko. He pai mō te tangohanga ā-ringa me te tango i ngā momo rauemi polymer, nō reira he hangarau tukatuka matomato me te pānga horoi pai.
Wā tuku: Pipiri-07-2024