Metal Ukukhathala: Yintoni na kwaye njani amelane?

rhoqo unobangela ukungaphumeleli izixhobo ezahlukeneyo yi fatigue metal. Yaye le nto inokwenzeka kuphela emva kokuba ukusetyenziswa ixesha elide, kodwa ekuqaleni izixhobo okanye isithuthi. Isizathu soku imithwalo ngamaxesha olutshintshatshintshayo ezifunyanwa ngumntu elisisiseko ngamnye okanye into nje ngexesha ekwenzeni umsebenzi wayo ophambili, kodwa inkqubo yokuvelisa. Ngenxa yoko, izinto uqalisa ukuba ndiludilize, nokuba ixabiso ombane sele bengekafiki amaxabiso olunamandla.

Enyanisweni, ukudinwa - utshintsho ezingundoqo iimpawu yesinyithi (mechanical kwaye emzimbeni) phantsi koxinzelelo elibujikele kunye uhlobo. Oku kuthetha utshintsho kumaziko izinto ezenzeka kwinqanaba amakhulu namancinci, nto leyo luqinisekiswa kakhulu kwi imeko lokuqala iimpawu workpiece.

Elichaza wayevuma metal olu hlobo kwintshabalalo gama ezifana isebenza, njengoko umda unyamezelo. Eli xabiso parameter ngamanani lilingane ombane enkulu leyo ukuxhathisa izinto ngaphezu kwezigidi ezili-10 imijikelo okanye nangaphezulu, ngamanye amazwi ngenxa iseti ixesha iyalayisha.

fatigue metal ayenzeki minutely, yaye oku ingozi yayo ephambili. Kuthatha ixesha ukuba kwenzeka kwi ezibonakalayo utshintsho oluyimfuneko ukuba kusenokwenzeka ukuba ngaphandle ayikwazi ingayi kubonakaliswa. uhlobo iimpawu zazo metal original uzimisele kakhulu stress imo kulayishwa msebenzi nefuthe kwindalo esingqongileyo. Ume kwindawo ethile, zonke izenzakalo ezenzeka ingathityazwa. Noko ke, ekuhambeni kwexesha, ukumelana ukuthotywa ngcembe iqalisa ukuba ukwehla, kwaye kukho umonakalo ukudinwa ekuthiwa njalo-.

Ngelo ukukhathala isigaba metal kakhulu lokuqala uqala zenzeke kwinqanaba kwesakhiwo, xa imida okuziinkozo kunye namanye amacandelo micro-iintanda ziqala ukuvela, olukuye elandelayo ukulayisha kuyilo ajikwa macrocracks. Oku eliba unobangela enkulu ukusilela noshowo isiqalelo sokugqibela kwinkqubo okanye isampuli ngexesha uvavanyo ngoomatshini.

Kakhulu ngokucacileyo metal fatigue igophe ubonakalise igama elifanayo ebonisa ubudlelwane ahambelanayo phakathi kwenani lemijikelo ezifunyanwa kweqonga isampula kunye umonakalo ukususela ngomzuzu ingenzeka lwamathanda kunye nesiphelo intshabalalo lokugqibela yenjongosenzi yophando. Njengoko ukuba iziganeko ukudinwa ekuqaleni ukuvela kwiindawo ukungafezeki zezakhiwo, ukusasazwa leyo probabilistic kwindalo, kwaye iimpawu ukudinwa zixhomekeke imithetho efanayo. Ezi mvavanyo lwenziwa amaninzi kwisampulu ejikelezayo, kuqhotyoshelwe umthwalo ukugoba rhoqo.

fatigue metal ikakhulu imisele imiqathango ukusebenza kwe uyilo. Ubukho ndlela esebenzayo kunye nobushushu sezingeni eliphezulu sakubanako ukunyusa isantya kakhulu umbandela aqukuqelayo kwi kwiinkqubo ezimbi. Wuxhathise zinto kakhulu reduced phambi ezahlukeneyo inhomogeneities noshowo ubukho inclusions non-sisinyithi, ukusasazwa non-uniform lweziqalelo alloying, kwakunye nokunqongophala komhlaba ucoceko. Ukuthintela oku, kunokwenzeka ukubhenela unyango kumphezulu ezahlukeneyo, onako ukwenza kule nwebu eliphezulu eziphathekayo, intsalela ucinezelo ntshikilelo. Kwiimeko ezininzi, le njongo olwenziwa kwe- Ukwanda, enze yokuqaqadeka umsebenzi okanye umgangatho yokuqaqadeka ngeendlela ezahlukeneyo, umzekelo laser lukhuni.