Kev txhaj tshuaj peening yog txheej txheem uas siv high-speed jetting ntawm xuab zeb txhaj tshuaj thiab hlau txhaj tshuaj los cuam tshuam rau saum npoo ntawm lub workpiece los txhim kho qee yam khoom ntawm ib feem thiab hloov lub xeev nto. Nws tuaj yeem siv los txhim kho cov khoom siv dag zog ntawm qhov chaw, hnav tsis kam, qaug zog thiab corrosion kuj, thiab lwm yam. Nws kuj tuaj yeem siv rau saum npoo matting, descaling thiab optimizing qhov seem ntawm kev ntxhov siab ntawm casting, forging thiab vuam qhov chaw.
Cov txheej txheem txhaj tshuaj peening yog txheej txheem ntawm txau ntau qhov projectiles rau ntawm qhov chaw, ib yam li suav tsis txheeb me me rau rau saum npoo. Yog li ntawd, qhov saum npoo ntawm cov hlau ua rau cov yas deformation muaj zog heev, uas ua rau qhov chaw ntawm qhov chaw tsim cov thickness ntawm cov txheej txheem txias ua hauj lwm, uas yog hu ua Surface reinforcing txheej, cov txheej txheem no yuav ua rau kom muaj zog ntawm lub zog. .
Ua ntej nkag siab txog kev txhaj tshuaj peening thev naus laus zis, nws yog qhov tsim nyog rau peb piav qhia peb lub tswv yim tsis meej pem ntawm kev txhaj tshuaj blasting, xuab zeb blasting, thiab tua peening.
Peb lub tswv yim no yog plaub lo lus: tshuaj tsuag, pov, tua, xuab zeb. Ntawm lawv, blasting yog txheej txheem txheej txheem, thiab tua xuab zeb yog cov khoom siv. Txau yog siv cov cua kub siab los tshuab txhaj tshuaj thiab xuab zeb rau saum npoo ntawm lub workpiece, thiab ntuav yog siv lub tshuab ua kom nrawm nrawm los ua qhov project txhaj tshuaj rau saum npoo ntawm lub workpiece. Kev txhaj tshuaj yog ua los ntawm cov hlau txhaj tshuaj, thiab cov xuab zeb yog ua los ntawm quartz xuab zeb.
Cov yam ntxwv ntawm qhov chaw tom qab txhaj tshuaj peening
Txoj cai kev faib tawm ntawm kev ntxhov siab raws qhov tob kev taw qhia tom qab txau yog qhia los ntawm kev faib nkhaus ntawm kev txhaj tshuaj peening residual stress. Qhov saum npoo residual compressive kev nyuaj siab, qhov tob ntawm lub compressive kev nyuaj siab txheej, lub siab tshaj plaws residual compressive kev nyuaj siab thiab txoj hauj lwm ntawm lub siab tshaj plaws residual compressive kev nyuaj siab yog plaub yam ntxwv ntau.
Ntawm lawv, qhov saum npoo compressive kev nyuaj siab thiab lub thickness ntawm cov compressive kev nyuaj siab txheej muaj ib tug ntau pom tseeb tej yam kev mob ntawm lub nto ntxiv dag zog rau cov yam ntxwv ntawm ib feem. Ntxiv nrog rau cov khoom ntawm cov khoom txau nws tus kheej, qhov luaj li cas ntawm qhov seem ntawm qhov seem compressive kev ntxhov siab thiab qhov tob ntawm cov txheej txheem kev ntxhov siab feem ntau yog nyob ntawm qhov kev txhaj tshuaj peening siv thiab qhov chaw npog.
Feem ntau hais lus, tsim nyog nce qhov kev txhaj tshuaj peening siv thiab txhaj tshuaj peening kev pab cuam yuav pab ua kom cov nyhuv txhaj tshuaj peening, tab sis nws kuj yuav ua rau muaj qhov nce ntawm qhov roughness. Rau kev txhaj tshuaj peening kev pab them nqi, thaum qhov kev pab them nqi tsis txaus, qhov seem compressive kev nyuaj siab ntawm cov txheej saum npoo yog qhov loj, tab sis kev ntxhov siab yuav tshwm sim. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum xaiv qhov kev txhaj tshuaj peening siv thiab txhaj tshuaj peening specimen ua ke nrog cov yam ntxwv ntawm cov khoom siv thiab cov kev xav tau ntxiv, kom cov txheej txheem txhaj tshuaj peening tuaj yeem ua kom muaj zog ntxiv.
Kev hloov pauv ntawm cov khoom siv ntawm cov tshuaj txau
Txau qhov chaw ua ntxhib. Cov hlau ntawm qhov chaw txau yog nyem tawm, tsim cov hlau me me, yog li cuam tshuam rau qhov chaw roughness. Nrog rau qhov nce ntawm kev txhaj tshuaj peening siv, qhov txo qis ntawm qhov tawv tawv thiab lub sijhawm ntev ntawm kev txhaj tshuaj peening, qhov nto roughness kuj yuav nce.
Peb yam cuam tshuam rau kev txhaj tshuaj
Muaj peb yam tseem ceeb rau kev ntsuas qhov zoo ntawm cov pellets muaj zog: lub zog, kev tiv thaiv, thiab qhov roughness.
1. Kev siv zog txhaj tshuaj
Cov txheej txheem tsis cuam tshuam rau kev txhaj tshuaj peening siv feem ntau suav nrog: txoj kab uas hla ntawm qhov projectile, elastic flow velocity, projectile txaus tus nqi, txhaj tshuaj peening lub sij hawm, thiab lwm yam. Qhov loj ntawm txoj kab uas hla ntawm lub projectile, qhov ceev ceev, lub zog ntau dua ntawm kev sib tsoo. qhov projectile thiab lub workpiece, thiab ntau dua qhov kev siv ntawm kev txhaj tshuaj peening. Cov residual compressive kev ntxhov siab tsim los ntawm kev txhaj tshuaj peening tuaj yeem ncav cuag 60 feem pua ntawm lub zog tensile ntawm cov khoom siv, qhov tob ntawm cov seem compressive kev ntxhov siab feem ntau tuaj yeem ncav cuag 0.25mm, thiab qhov siab tshaj plaws tus nqi yog li 1 hli. Kev txhaj tshuaj peening siv yuav tsum muaj qee lub sijhawm txhaj tshuaj peening kom lav. Tom qab ib lub sij hawm ntawm lub sij hawm, qhov kev txhaj tshuaj peening siv mus txog saturation, thiab tom qab ntawd lub sij hawm txhaj tshuaj peening txuas ntxiv, thiab qhov kev siv yuav tsis nce ntxiv lawm. Hauv kev xeem Almen ntawm kev txhaj tshuaj peening lub zog, txhaj tshuaj peening lub zog yog tus cwj pwm los ntawm qhov siab ntawm lub hauv paus ntawm deformation ntawm daim ntawv xeem.
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2. Txhaj tshuaj tiv thaiv
Qee tus neeg feem ntau xav li no txog kev txhaj tshuaj tiv thaiv tus nqi: Kuv lub nozzle txau lub tshuab ua haujlwm 2 zaug nrog 1 nce thiab 1 nqes, nws puas tuaj yeem ua tau raws li 200 feem pua kev pab them nqi? Nws suab tsim nyog thaum xub thawj siab ib muag, tab sis nws tsis yog li ntawd.
Kev ntsuas ntawm kev pov hwm yog raws li hauv qab no: thawj lub tsho tiv no ntawm cov xim glaze lossis fluorescent glaze rau ntawm qhov chaw ntawm lub workpiece, tom qab ntawd tawg lub workpiece raws li cov txheej txheem tsis, tshem tawm lub workpiece tom qab txau lub nto ib zaug, thiab saib cov seem nyob rau hauv lub workpiece. microscope (pob tshab iav). Qhov kev faib ua feem ntawm cov txheej txheej ntawm qhov chaw, yog tias muaj 20 feem pua tsawg, qhov kev pab them nqi yog 80 feem pua. Thaum tsuas muaj 2 feem pua ntawm cov seem, uas yog, qhov kev pab them nqi yog 98 feem pua , nws tuaj yeem suav tias yog kev tshem tawm tag nrho, uas yog, qhov kev pab them nqi yog 100 feem pua, thiab muaj sijhawm nyob rau lub sijhawm no. Yog tias 400 feem pua ntawm kev them nyiaj tiav, qhov ntawd yog 4 zaug ntawm lub sijhawm.
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3. Nto roughness
Vim yog kev txhaj tshuaj ntawm cov hlau txhaj tshuaj, qhov roughness ntawm lub workpiece nto muaj qhov hloov pauv. Cov yam tseem ceeb uas cuam tshuam rau qhov roughness yog lub zog thiab hardness ntawm cov khoom siv, txoj kab uas hla ntawm lub projectile, lub kaum sab xis thiab ceev ntawm cov tshuaj tsuag, thiab cov thawj nto roughness ntawm ib feem.
Nyob rau tib lub sijhawm, qhov siab dua qhov muaj zog thiab qhov tawv tawv ntawm cov khoom siv, qhov nyuaj dua cov yas deformation, qhov tob ntawm qhov crater, thiab qhov me me ntawm qhov roughness tus nqi; qhov me me ntawm txoj kab uas hla ntawm qhov projectile, qhov qeeb qeeb, qhov ntiav cov crater, qhov nto roughness tus nqi yuav me dua; qhov loj dua lub kaum sab xis, qhov me me ntawm qhov ib txwm siv ntawm qhov projectile tshaj tawm, qhov me me ntawm qhov cuam tshuam quab yuam, qhov ntiav qhov crater, qhov loj dua qhov tangential tshaj tawm ntawm qhov projectile, thiab ntau dua cov nyhuv abrasive ntawm qhov projectile ntawm qhov chaw. Qhov me dua tus nqi roughness; tus thawj nto roughness ntawm ib feem kuj yog ib yam ntawm cov influencing yam. Qhov rougher qhov qub nto, qhov me dua qhov txo qis ntawm qhov roughness tus nqi tom qab txhaj tshuaj peening; ntawm qhov tsis sib xws, qhov smoother ntawm qhov chaw, qhov rougher qhov chaw tom qab txhaj tshuaj peening.
Thaum cov khoom raug siv rau kev siv tshuaj tua kab mob siab heev, cov craters sib sib zog nqus tsis yog tsuas yog nce tus nqi ntawm qhov roughness, tab sis kuj tsim kom muaj kev ntxhov siab loj, uas ua rau tsis muaj zog ntawm kev txhaj tshuaj peening.
