1 Khoom Description
Cov cam khwb cia txhuas bronze Zcall0Fe3, uas muaj zog dua thiab corrosion kuj tshaj tooj dag thiab tin bronze, yog compounded ntawm carbon steel A36 nrog cov specification ntawm (8 ntxiv 32) phaj m. Cov tshuaj muaj pes tsawg leeg ntawm cov khoom yog qhia nyob rau hauv Table 1 thiab Table 2. Txhawm rau txhim kho kev ua tau zoo ntawm cov phaj sib xyaw, nws yog ib qho tsim nyog yuav tsum tau ua cov txheej txheem kev kho cua sov ntawm cov phaj sib xyaw tom qab tawg vuam, uas ua lub luag haujlwm tseem ceeb hauv kev tshem tawm cov khoom siv. residual kev nyuaj siab uas tsim thaum lub sij hawm welding thiab explosive hardening. Vim tias qhov tawg vuam clad phaj yog tsim los ntawm ob cov ntaub ntawv nrog lub cev thiab tshuaj lom neeg sib txawv, qhov kub thiab txias yuav tsum coj mus rau hauv tus account qhov kub thiab txias ntawm ob cov ntaub ntawv. Raws li cov ntaub ntawv, lub annealing kub ntawm hlau yog 650 ~ 750 degree, thiab lub annealing kub ntawm tooj liab yog 650 ~ 800 degree, yog li qhov kev ntsuam xyuas no txiav txim siab qhov kub ntawm annealing yog 650 ~ 800 degree, lub sij hawm tuav yog 2 teev, thiab ces huab cua. cua txias. Saib Table 3 rau cov txheej txheem kev kho cua sov annealing.
2 Qauv tom qab xaim txiav
Siv lub tshuab txiav hlau txiav ntau cov qauv ntawm c11000 tooj liab clad steel phaj rau kev lag luam tshuaj, nrog rau cov qauv loj ntawm 16mm × 10mm × 10mm, ua ntej muab txhua pab pawg ntawm cov qauv hauv ZDXS5 lub thawv-hom tiv thaiv rau cua sov thiab txuag hluav taws xob. ntawm qhov sib txawv ntawm qhov kub thiab txias, thiab tom qab ntawd zom cov nplaim ntawm txhua tus qauv kom du thiab siv TD-3500 X-ray diffractometer rau XRD tsom xam los txiav txim qhov sib xyaw ntawm qhov sib txuas. Tom qab ntawd grind thiab polish lub metallography. Sab tooj liab thiab steel sab yog corroded nrog FeC13 hydrochloric acid cawv tov thiab 4 feem pua nitric acid cawv tov, thiab metallography yog soj ntsuam los ntawm VHX-2000 ultra-depth ntawm teb. Lub diffusion txheej thiab lub zog spectrum ntawm lub interface micro-chav kawm tau soj ntsuam los ntawm kev tshuaj ntsuam xyuas electron microscope (nrog EDS). Thaum kawg, qhov hardness faib nyob ze ntawm kev sib txuas ntawm cov qauv raug ntsuas los ntawm HV-1000B microhardness tester.
3Interface morphology
Lub interface morphology ntawm explosive welding bonding yog qhia nyob rau hauv daim duab 2. Nws tuaj yeem pom tias qhov sib txuas ntawm tooj liab / hlau tawg vuam sib txuas phaj yog tas li thiab tsis tu ncua, nrog lub wavelength ntawm txog 950 μ m. Qhov siab nthwv dej yog li 300 μm. Qhov no kuj yog qhov kev sib txuas uas cov vuam tawg tau pom tseeb txawv ntawm lwm txoj kev vuam, uas yog tsim los ntawm kev nthuav tawm ntawm kev tawg yoj tawm tom qab tawg tawg. Vim tias qhov cuam tshuam siab tshaj nws qhov kev tawm dag zog lub zog, thiab thaum kawg tsim cov wavy bonding interface nyob rau hauv qhov kev txiav txim ntawm cov khoom tawg; Tsis tas li ntawd, lub wavy bonding interface ua rau kom qhov chaw sib txuas ntawm tooj liab thiab hlau, uas yog qhov zoo los txhim kho lub zog sib txuas. Nyob rau tib lub sijhawm, nws tseem pom tau tias muaj cov hlau tawg tsis tu ncua ntawm qhov sib txuas, uas yog vim tias feem ntau ntawm lub zog tsim los ntawm cov khoom tawg tau hloov mus rau hauv lub zog hluav taws xob, uas yuav ua rau cov hlau melting nyob rau hauv qhov xwm txheej ze adiabatic.
Los ntawm kev soj ntsuam lub microstructure ntawm lub interface, nws tuaj yeem xaus lus tias muaj cov yas deformation ntawm ob sab steel thiab sab tooj liab. Cov yas deformation no yog tsim ib txhij nrog kev tsim ntawm nthwv dej, thiab ze rau qhov sib cuam tshuam, qhov ntau dua ntawm cov yas deformation. Txawm li cas los xij, qhov txawv yog tias microstructure grain ntawm sab tooj liab yog elongated thiab sib npaug rau cov kev taw qhia cuam tshuam (Daim duab 3), uas yog vim hais tias cov tooj liab nrog zoo plasticity deforms muaj zog nyob rau hauv qhov kev txiav txim ntawm lub siab loj, tsim ntom streamline; Tsis muaj nplej elongation yog pom nyob rau sab steel, tab sis lub grain loj yog obviously me dua qhov deb ntawm lub interface (Fig. 4). Qhov no yog vim hais tias: thaum lub sij hawm vuam txheej txheem, qhov kub nce sharply, thiab cov hlau melts thiab sai sai txias kom refine cov nplej; Cov yas deformation hnyav ntawm qhov sib cuam tshuam tau rhuav tshem cov qoob loo qub, thiab recrystallized thiab refined cov nplej.
4 Nta
(1) Thaum qhov ntsuas kub qis dua 700 degree, qhov microstructure ntawm tooj liab tsis hloov pauv loj, thiab cov tuab ntawm cov txheej txheem diffusion ntawm qhov sib cuam tshuam ntawm c11000 tooj liab clad steel phaj rau kev lag luam tshuaj tsis hloov ntau; Txawm li cas los xij, thaum qhov kub siab tshaj 750 degree, lub microstructure ntawm tooj liab yuav loj dua, thiab cov tebchaw yog tsim los ntawm ob sab thiab thickens nrog kub nce.
(2) Lub annealing kub ntawm 700 degree yog haum rau tawg vuam ntawm tooj liab / hlau puas daim hlau. Lub diffusion ntawm cov ntsiab lus ntawm kev sib txuas lus sib txuas yog qhov zoo los txhim kho lub zog thiab yuav tsis tsim cov tebchaw.
(3) Lub hardness ntawm lub interface ntawm tooj liab / hlau puas phaj yog qhov loj tshaj plaws, thiab hardness yuav txo nrog qhov nce ntawm qhov kev ncua deb ntawm lub interface; Tom qab annealing, lub hardness txo qhov pom tseeb, thiab qhov siab dua qhov annealing kub, qhov hardness ntau dua.
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