Evolushọn nke Ngwa Akara
Evolushọn nke ihe akara akara malitere ka akara na-eche ihe ndị siri ike ihu.Enwere ike gboo mkpa mbụ site na iji hemp ma ọ bụ akpụkpọ anụ juru, mana ka ihe ndị a na-achọsi ike na-achọwanye ihe ọhụrụ.Nke a mere ka iwebata akara rọba eke, bụ nke sitere na synthetic elastomers, na n'ikpeazụ engineering polymers dị ka PTFE (Polytetrafluoroethylene).
Anọ n'ime nhọrọ ihe ọgbara ọhụrụ a na-ahụkarị maka egbugbere ọnụ shaft akara bụ nitrile roba, polyacrylate, FKM, na PTFE.N'ime ihe ndị a, atọ bụ elastomers - nitrile rubber, polyacrylate roba na FKM - na naanị otu bụ polymer - PTFE.Ka anyị hụ ka ihe ndị a si agbakọta.
Ihe 1: Nitrile Rubber
Nitrile rọba na-aga nke ọma aha ole na ole, gụnyere acrylonitrile butadiene roba, Buna-N, na NBR.N'ụzọ bụ isi, ọ bụ elastomer rọba sịntetị nke na-eguzogide ọgwụ ụfọdụ bụ isi dị ka mmanụ, mmanụ mmanụ, na mmanụ ọkụ.E jiri ya tụnyere ndị elastomers ndị ọzọ, ọ na-arụ ọrụ pụtara ìhè nke iguzogide mbibi na ikpughe na anyanwụ na ihu igwe.Otú ọ dị, o nwere ókè ya.
Ihe 2: Polyacrylate Rubber
Polyacrylate na-ezo aka na rọba polyacrylate na mgbe ụfọdụ a na-akpọ ya ACM.Ọ na-enye nguzogide okpomọkụ ka mma ma dakọtara na ngwa ngwa dị elu karịa rọba nitrile.Ọ dịkwa mma na ụfọdụ ngwa ọpụrụiche dị ka lubricants gụnyere sọlfọ.Ike ya nwere oke na nguzogide mmiri bụ njirimara njedebe ya.
Ihe 3: FKM (Fluoroelastomers)
Nke a bụ eziokwu na-adọrọ mmasị: ndị mmadụ na-enwekarị mgbagwoju anya maka ọdịiche dị n'etiti FKM, FPM, na Viton.Ha niile na-ekwu maka otu ihe ndabere.Aha FKM na-achọta mgbọrọgwụ na nhazi ASTM nke flouroelastomers, ebe FPM bụ DIN/ISO abbreviation.Viton bụ aha ahia ya, nke DuPont nwe ya.Ngwongwo FKM dị elu karịa nke ma ọ bụ rọba nitrile ma ọ bụ polyacrylate roba, ma n'ihe gbasara okpomọkụ na ọsọ ọsọ, ma na-eguzogide ọgwụ.Ọ bụkwa nke kacha ọnụ n'ime elastomer atọ a tụlere ugbu a.
Ihe 4: PTFE (Polytetrafluoroethylene)
PTFE kacha mara amara site na aha ahia ya, polymer (nke DuPont nwekwaara).PTFE karịrị arụ ọrụ rọba nitrile, roba polyacrylate, na FKM n'ihe gbasara ọsọ ngwa, okpomọkụ, na nguzogide kemịkalụ.N'ezie, nwere kemịkalụ kacha mma nke polymer ma ọ bụ elastomer yana ọnụọgụ kacha ala nke esemokwu.
Mmechi
Chaatị dị n'okpuru ebe a na-egosi ka ihe anọ a na-ejikarị akara akara si ejikọta ibe ha n'ihe gbasara oke ọsịsọ ha.PTFE na-aka nke ọzọ, ọbụlagodi n'ọsọ ngwa ngwa karịa 30,000 rpm.Mgbe ị na-ahọrọ akara nke kwesịrị ịlanarị gburugburu ebe na-emebi emebi na ihe ịma aka na ọsọ dị elu, elela anya karịa PTFE.
Oge nzipu: Mee-08-2018