Hnav thaum lub sij hawm txhuas ntawv ci jumbo yob dov
Feb 17, 2022
Hnav thaum lub sij hawm txhuas ntawv ci jumbo yob dov
Thaum lub sij hawm dov txheej txheem ntawm aluminium foil jumbo yob, vim yog cov yas deformation ntawm cov hlau, qhov chaw tshiab tau tsim tawm tas li, thiab qhov chaw sib cuag muaj lub siab siab, ua ke nrog cov yam ntxwv ntawm qhov kub thiab txias deformation thiab loj zawv zawg ceev, yog li ntawd. nto ntawm yob adheres. Qhov tshwm sim ntawm cov hlau thiab yob hnav yog qhov tshwj xeeb. Thaum lub adhesion ntawm cov hlau thiab yob tshwm sim, zawv zawg sab nraud kev sib txhuam ntawm ob yog hloov mus rau hauv kev sib txhuam sab hauv ntawm cov hlau txheej txheej, thiab shear deformation ntawm subsurface txheej tshwm sim, yog li hloov qhov kev sib txhuam ntawm lub xeev ntawm qhov chaw. hlau yog adhered. Qhov no ua rau muaj kev hloov pauv hauv lub xeev kev ntxhov siab ntawm cov hlau thiab kev hloov pauv hauv lub xeev ntws. Raws li qhov tshwm sim, kev sib txhuam nce, kev siv hluav taws xob nce, qhov chaw ntawm cov khoom raug puas tsuaj, cov yob yog hnav sai heev, thiab lub neej kev pab cuam luv luv. Hauv cov xwm txheej hnyav, cov txheej txheem dov tsis tuaj yeem ua tiav ib txwm.
Cov teeb meem hnav thaum lub sij hawm dov yog qhov nyuaj heev, thiab kev hnav hlau yog cuam tshuam nrog cov khoom siv hlau, nto oxide, ua haujlwm tawv, ua haujlwm kub, ceev, roj nplua nyeem, thiab ib puag ncig ib puag ncig. Nyob rau hauv tus txheej txheem ntawm cov khoom deformation, hnav mechanism yuav yog ib los yog ob peb mechanisms ua ib txhij. Tsis tas li ntawd, cov txheej txheem deformation nws tus kheej kuj sib txawv. Thaum lub sij hawm dov, lub yob yog nyob rau hauv kev sib cuag nrog lub dov daim dua thiab tsis tu ncua, thiab nto ntawm lub dov piece nkag mus rau hauv lub deformation cheeb tsam yog tas li hloov. Tsis tas li ntawd, qhov chaw ntawm lub workpiece yog huv si tom qab pickling. Thaum lub workpiece nyob rau hauv kev sib cuag nrog cov qias neeg yob nto, muaj peev xwm ntawm adhesion thiab tev ntawm cov khoom hnav yog intensified vim yas deformation thiab elongation. Yog hais tias qhov siab ntawm cov khoom hnav yog ntau dua li cov tuab ntawm cov roj zaj duab xis, ces cov khoom yuav raug nias rau ntawm qhov chaw kom zom cov npoo ntawm cov yob.
Hom kev hnav txawv nyob ntawm qhov chaw sib chwv topography, kev sib cuag thiab tej yam kev mob ib puag ncig. Txawm li cas los xij, feem ntau nws tuaj yeem muab faib ua ob hom: mechanical hnav thiab tshuaj hnav. Mechanical hnav yog ib hom kev hnav khaub ncaws uas muaj feem xyuam rau kev sib txhuam, abrasive hnav, yaig, thiab qaug zog; Kev hnav tshuaj lom neeg yog tshwm sim los ntawm kev yaig ntawm qhov chaw los ntawm ntau yam khoom siv, ua raws li kev sib txhuam thiab tawg ntawm cov reactants vim kev ua haujlwm ntawm cov tshuab. Qhov sib txawv ntawm kev hnav tuaj yeem tshwm sim ib tus zuj zus, ua ntu zus lossis ib txhij. Qhov kev ntxhov siab siab ntawm qhov hnav yog ib qho ntawm ntau yam kev hnav phenomena.
