titanium / stainless hlau clad phaj manufacturing txheej txheem thiab cov khoom
Titanium clad stainless hlau phaj txhim kho
Nrog rau txoj kev loj hlob ntawm industrial modernization, ntau yam ntaub ntawv tshiab tau tshwm sim nyob rau hauv qhov kawg. Ntshiab titanium / steel composite daim hlau tsis tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv khoom. Titanium cladding stainless hlau cov ntaub ntawv tau qhia dav daim ntawv thov kev cia siab nyob rau hauv aerospace, tiv thaiv lub teb chaws thiab tshuaj industries nrog lawv superior zog. Nws yog qhov nyuaj kom tau txais lub zog zoo sib xws ntawm vuam interface los ntawm txoj kev vuam zoo tib yam. Tam sim no, nws yog feem ntau siv los ntxiv cov hlau hloov pauv (bronze lossis Monel alloy, thiab lwm yam) rau kev sib txuas ua ke. Cov txheej txheem yog complex thiab tus nqi siab, thiab yuav muaj melting, delamination thiab lwm yam tsis xws luag. Nyob rau hauv daim ntawv no, titanium thiab stainless hlau yog welded los ntawm tawg welding yam tsis ntxiv kev hloov pauv hlau kom ua tau raws li qhov xav tau kev sib txuas lub zog.
Txheej Txheem Txheej Txheem:
Khoom siv: gr2 / S30408
Loj: 3/16 * 1630 * 3080mm 2pcs
Cov phaj clad yog muab tso rau hauv qhov sib npaug, thiab cov txheej txheem detonator faib ntawm qhov sib npaug yog xaiv.
Lub explosives uas muaj siab detonation tshaj tawm thiab siab rhiab heev yuav tsum tau siv raws li lub explosive. Lub detonation tshaj tawm yuav tsum nyob nruab nrab ntawm 1800 thiab 1900, thiab qhov siab ntawm kev txhawb nqa yuav tsum yog 6 hli (Ntau tshaj qhov siab tshaj qhov siab 4 hli)
Qhov kev sib txuas ntawm cov phaj clad yog polished los ntawm 120 # 1000 nplooj log kom ntseeg tau tias qhov sib txuas ntawm lub hauv paus thiab clad phaj yog du thiab tsis muaj oxidation inclusions lossis lwm yam tsis xws luag. Sandy av foundation yuav tsum xaiv raws li lub hauv paus, uas yuav tsum tiaj tus thiab hauv av matrix yuav tsum uniform.
Qhov tshwm sim tawg
interface metallography
Raws li pom nyob rau hauv daim duab 2, cov duab metallographic qauv ntawm ob daim hlau sib xyaw tom qab tawg tau pom muaj feem. Nyob rau hauv daim duab no, qhov sib koom ua ke yog wavy, lub waveform yog ruaj khov thiab zoo ib yam, thiab tsis muaj qhov pom tseeb nkig theem xws li melting block.
Tom qab tawg welding, qhov zoo ntawm qhov chaw yog qhov zoo yam tsis muaj tearing thiab ntug melting, thiab UT nrhiav pom kev sib raug zoo yog ntau dua 98 feem pua.
Tom qab tawg, cov khoom tiav tau raug coj mus kuaj shear los kuaj nws lub zog sib txuas, raws li qhia hauv Table 1.
Table 1 Lub zog shear
| Yam khoom | Gr2/S30408 | ||||||
| 1 # cladding phaj | Qauv No. | 1# | 2# | 3# | 7# | 8# | 9# |
| Shear zog (Mpa) | 212 | 205 | 212 | 198 | 193 | 179 | |
| 2 # cladding phaj | Qauv No. | 4# | 5# | 6# | 10# | 11# | 12# |
| Shear zog (Mpa) | 211 | 197 | 209 | 184 | 207 | 189 | |
| qhov chaw ua piv txwv | 1 # ~ 6 # yog muab los ntawm lub phaj cladding nyob rau hauv 1500 hli los ntawm qhov pib taw tes, thiab 7 # ~ 12 # yog muab los ntawm qhov kawg ntawm lub cladding phaj. | ||||||
Cov ntaub ntawv hauv Table 1 qhia tau hais tias lub zog shear ntawm ob daim hlau sib xyaw nrog tib txoj kev sib tsoo tawg tau raug coj mus rau kev tshuaj xyuas cov ntaub ntawv. Cov txiaj ntsig tau pom tias lub zog sib txuas ntawm qhov nruab nrab ntawm cov phaj sib xyaw yog siab dua qhov kawg ntawm cov phaj sib xyaw. Cov ntaub ntawv shear ntsib thiab siab dua tus qauv nb/t47002.3-2009. Lub zog shear Ntau dua los yog sib npaug rau 140MPa, uas ua tau raws li qhov yuav tsum tau ua ntawm cov khoom lag luam.
Sib tham thiab tsom xam
1. Qhov zoo ntawm cov khoom sib koom ua ke cuam tshuam rau kev sib koom ua ke
Lub sijhawm no, kev kho saum npoo ntawm cov phaj clad tau ua los ntawm kev siv 120 # txhiab impellers ntawm lub tshuab tsis siv neeg polishing rau ntau zaus. Cov polishing zoo yog qhov zoo, tshem tawm qhov teeb meem ntawm qhov tsis sib xws hauv zos los ntawm phau ntawv polishing. Qhov ntsuas qhov ntev ntawm qhov ntsuas qhov roughness yog 1=2.50mm, thiab qhov ntsuas qhov ntev ntawm qhov roughness yog li 10 ~ 1.3, thiab qhov transverse roughness yog 1.5 ~ 1.85. Qhov luaj li cas ntawm qhov concave thiab convex ntawm qhov chaw txiav txim siab qhov kev tuav pov hwm ntawm lub dav hlau, uas yog, cov degree ntawm melting ntxiv ntawm vuam interface thaum lub kinetic zog ntawm lub dav hlau hloov mus rau hauv lub tshav kub zog.
Tom qab qhov saum npoo zoo polished, cov pa phem txheej tsim los ntawm cov roj, roj thiab dej txuas rau saum npoo yog yooj yim muab tshem tawm. Siv txoj kev xav ntawm cov ntaub ntawv txawv teb chaws rau kev siv, yog tias qhov sib npaug ntawm qhov roughness ntawm lub hauv paus phaj thiab clad phaj yog tsawg tshaj li ib feem kaum ntawm qhov ib txwm yoj amplitude, feem ntau ntawm 2 ~ 3um, ib tug tsim nyog weld yuav tau. Yog tias nws ntau dua li cov ntaub ntawv no, tej zaum yuav muaj txheej txheej txheej txheej txheej. Tom qab polishing, qhov roughness ntawm lub hauv paus phaj siv lub sijhawm no tuaj yeem ncav cuag 1 ~ 2um, yog li nws tuaj yeem ua tau raws li cov khoom siv sib txuas.
2. interface melting cuam tshuam rau kev sib txuas ntawm titanium / stainless hlau
Nws yog ib qho yooj yim kom pom qhov tshwm sim thaum lub sij hawm tawg ntawm titanium stainless hlau uas lub interface melts. Qhov no yog vim hais tias titanium thiab hlau yog ib qho yooj yim los tsim intermetallic tebchaw xws li TiFe, TiFe2, Ti2Fe, thiab lwm yam, thiab ntau composite brittle intermetallic tebchaw kuj yuav tsim ntawm titanium, hlau, chromium thiab nickel. Cov cua kub ntau dhau ntawm qhov sib txuas vuam yuav ua rau ntau dhau melting ntawm cov khoom sib txuas. Vim lub brittleness ntawm intermetallic, qhov sib koom ua ke yog nkig, uas yog ib qho yooj yim ua rau tawg ntawm lub vuam interface nyob rau hauv qhov kev txiav txim ntawm vuam kev nyuaj siab. Qhov tsis xws luag ntawm lub interface vim tawg propagation muaj kev cuam tshuam zoo rau lub zog sib txuas ntawm qhov tawg vuam sib txuas. Yog li ntawd, qhov tshwm sim ntawm lub interface melting yuav tsum tau txo los yog txawm zam. Yog li ntawd, qhov kev txwv sab sauv ntawm qhov tsis muaj zog ntawm cov vuam vuam yuav tsum raug zam rau kev tawg vuam ntawm titanium / stainless hlau, tsis txhob siv lub siab tshaj plaws detonation tshaj tawm, kom lub interface tuaj yeem tsim thermal softening thiab dav hlau, thiab ceev txias thiab solidify kom muaj txaus. tensile zog.
Ob lub titanium / stainless hlau explosive welding tests qhia tau hais tias nws muaj peev xwm mus nqa tawm tawg welding ntawm titanium / stainless hlau yam tsis muaj kev hloov txheej nyob rau hauv ib tug tej yam ntau yam. Kev sib tsoo ncaj qha ntawm titanium / stainless hlau yog ua los ntawm kev tswj nws qhov zoo, txhim kho lub kaum sab xis ntawm kev sib tsoo thiab ua kom cov dav hlau ntws ntau ntxiv. Cov txheej txheem no daws cov teeb meem ntawm qhov tsis txaus melting thiab kev sib txuas lub zog los ntawm tsis muaj kev hloov pauv txheej ntawm titanium / stainless hlau, ua kom cov txheej txheem yooj yim thiab txo tus nqi, Thiab cov khoom lag luam zoo ruaj khov, ua tau raws li cov khoom tsim khoom xav tau ntawm kev lag luam.
