Izinguquko zesakhiwo sezinduku ze-titanium alloy ngesikhathi sokushisa okushisayo

Izici zomshini we-titanium, ezaziwa kakhulu njengezakhiwo zemishini, zihlobene kakhulu nobumsulwa. I-high-purity titanium ine-machinability enhle kakhulu, i-elongation enhle nokuncipha, kepha amandla aphansi futhi ayizilungele izinto zokwakha. I-titanium emsulwa yezimboni iqukethe ukungcola okufanele, inamandla amakhulu kanye neplastiki, futhi ilungele ukwenza izinto zokwakha. Ukuqhutshwa kokushisa kwe-titanium ne-titanium alloy blanks kuphansi, okuzodala umehluko omkhulu wokushisa phakathi kongqimba olungaphezulu nongqimba lwangaphakathi ngesikhathi sokushisa okushisayo. Lapho izinga lokushisa lomgqomo we-extrusion lingama-degree angama-400, umehluko wezinga lokushisa ungafinyelela kuma-degree angama-200 ~ 250. Ngaphansi kwethonya elihlanganisiwe lokuqiniswa kokuncipha nomehluko omkhulu wokushisa kwesigaba esingenalutho, insimbi ebusweni nendawo emaphakathi kokungenalutho ikhiqiza amandla ehluke kakhulu nezakhiwo zepulasitiki, okuzodala ukusonteka okungalingani ngesikhathi senqubo yokukhipha. Ikhiqiza ukucindezeleka okukhulu okungeziwe, okuba umthombo wokuqhekeka nokuqhekeka ebusweni bemikhiqizo ekhishiwe. Inqubo eshisayo ye-extrusion yemikhiqizo ye-titanium ne-titanium ingxube iyinkimbinkimbi kakhulu kunaleyo ye-aluminium alloy, i-alloy yethusi, kanye nensimbi, enqunywa yizici ezikhethekile zomzimba nezamakhemikhali ze-titanium ne-titanium alloy.

Kuze kube manje, izinto zokugcoba kufanele zisetshenziswe kwinqubo yokukhipha izinduku ze-titanium. Isizathu esikhulu ukuthi i-titanium izokwakha i-fusible eutectic ngezinto ezisuselwa ku-iron-based noma nge-nickel based alloy mold emazingeni okushisa ama-980 degrees naku-1030 degrees, ngaleyo ndlela kubangele ukuthi isikhunta siguge kakhulu. Uma usebenzisa i-graphite lubricant, imihuzo ejulile ye-longitudinal ingakhiwa ebusweni bomkhiqizo, okuwumphumela womsebenzi we imishini-titanium induku ne-titanium alloy rod enamathela kusikhunta. Lapho ukhipha iphrofayli ngogcobisa ingilazi, kuzoholela ohlotsheni olusha lwesici "pitting", okungukuthi, ukuqhekeka ungqimba lomkhiqizo. Ucwaningo lukhombisile ukuthi ukuvela "komaka" kungenxa yokuhamba okuphansi kokushisa kwama-titanium ne-titanium alloys, okwenza ukuthi ungqimba olungaphezulu lwe-billet luphole ngamandla futhi i-plasticity yehle kakhulu.

Ama-alloys weTitanium ahlukaniswa njengamandla aphansi aphakeme, amandla aphakathi nendawo namandla amakhulu, futhi avela ku-200 (amandla aphansi) kuya ku-1300 (amandla amakhulu) MPa, kepha ama-alloys e-titanium amaningi angathathwa njengama-alloys amakhulu . Anamandla kunama-alloys e-aluminium, athathwa njengamandla aphakathi nendawo, futhi angashintsha ngokuphelele izinhlobo ezithile zensimbi ngamandla. Uma kuqhathaniswa nokwehla okusheshayo kwamandla ama-aluminium alloys emazingeni okushisa angaphezu kuka-150 ° C, amanye ama-alloys e-titanium asengagcina amandla amahle ku-600 ° C. I-compact metal titanium yaziswa kakhulu yimboni yezindiza ngenxa yesisindo sayo esilula namandla amakhulu kune ama-aluminium alloys, angagcina amandla aphakeme kune-aluminium emazingeni aphezulu okushisa. Njengoba kunikezwe ukuthi ubukhulu be-titanium bungu-57% wensimbi, amandla ayo athile (amandla / isisindo isilinganiso noma amandla / ubukhulu babizwa ngokuthi amandla athile) aphezulu, futhi ukumelana nokugqwala, ukumelana ne-oxidation, kanye nokumelana nokukhathala kunamandla. I-3/4 ye-titanium alloy isetshenziswa njengezinto zokwakha ezimelwe ngama-alloys ezakhiwo zezindiza ezisetshenziswa kakhulu njengama-alloys amelana nokugqwala. Ingxubevange yeTitanium inamandla amakhulu nokuqina okuphansi, izakhiwo ezinhle zemishini, ukuqina okuhle nokumelana nokugqwala. Ngaphezu kwalokho, ama-titanium alloys anokusebenza okuncane kwenqubo futhi kunzima ukusika. Ekusebenzeni okushisayo, kulula kakhulu ukuncela ukungcola okufana ne-hydrogen, i-oxynitride nekhabhoni. Kukhona ukumelana nomhuzuko ompofu kanye nenqubo yokukhiqiza eyinkimbinkimbi. Ukukhiqizwa kwezimboni kwe-titanium kwaqala ngonyaka we-1948. Isidingo sokuthuthukiswa komkhakha wezindiza siye senza ukuthi imboni ye-titanium ikhule ngezinga lokukhula lonyaka elibalelwa ku-8%. Njengamanje, ukukhishwa kwaminyaka yonke kwezinto ezisetshenzisiwe ze-titanium alloy kusetshenzisiwe sekufinyelele ngaphezu kwamathani angama-40,000 'cishe izinhlobo ezingama-30 zamamaki we-titanium alloy. Ama-alloys we-titanium asetshenziswa kakhulu yi-Ti-6Al-4V (TC4) 'Ti-5Al-2.5Sn (TA7) kanye ne-titanium emsulwa yezimboni (TA1, TA2 ne-TA3).

Xhumanisa nale ndatshana: Izinguquko zesakhiwo sezinduku ze-titanium alloy ngesikhathi sokushisa okushisayo

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