0102 ib0304 ib05
Lub rooj vag valve raw khoom stainless hlau phaj vuam pas nrig
2023-02-11 IB
Lub rooj vag valve raw khoom stainless hlau phaj vuam pas nrig Qhov no tus qauv stainless hlau phaj vuam pas nrig specification kev faib tawm, cov qauv kev, kev sim thiab cov qauv ntsuas thiab lwm yam ntaub ntawv ntsig txog. Cov qauv no siv rau stainless hlau electrode rau arc vuam. Xws li electrode cladding hlau yuav tsum muaj ntau tshaj 10.50% chromium thiab ntau cov hlau ntau dua li cov khoom. Raws li muaj pes tsawg leeg ntawm fused hlau, hom vuam core, vuam txoj hauj lwm thiab hom vuam tam sim no, vuam pas nrig yuav tsum tsis txhob muaj qhov tsis xws luag xws li tawg, npuas, residue thiab ntog tawm uas ua phem weld zoo, raws li qhia nyob rau hauv Table 1 thiab Table. 2. 1. Lub ntsiab lus lub tswv yim thiab daim ntawv thov daim teb no tus qauv stainless hlau phaj vuam pas nrig specification kev faib tawm, cov qauv kev, kev sim thiab cov qauv ntsuas thiab lwm yam ntaub ntawv ntsig txog. Cov qauv no siv rau stainless hlau electrode rau arc vuam. Xws li electrode cladding hlau yuav tsum muaj ntau tshaj 10.50% chromium thiab ntau cov hlau ntau dua li cov khoom. 2 Reference Standards GB223.1 ~ 223.70 Txoj kev tshuaj ntsuam xyuas ntawm cov hlau thiab txhuas alloys GB1954 - Kev ntsuas cov ntsiab lus microstructure hauv vuam ntawm chrome-nickel qis alloy steel GB2652 Tensile xeem txoj kev rau vuam thiab cladding hlau GB 4334.5 Stainless hlau daim hlau - corrosion test Txoj kev rau sodium thiosulfate hydrochloride 3 Hom thiab kev qhia tshwj xeeb kev faib tawm 3.1 Hom thiab specification ntawm vuam pas nrig yuav tsum muab faib raws li cov khoom siv ntawm cov hlau fused, hom vuam core, vuam txoj hauj lwm thiab hom vuam tam sim no. 3.2 Model Specification npaj txoj kev Tsab ntawv "E" qhia cov electrode, thiab tus naj npawb tom qab "E" sawv cev rau tus naj npawb ntawm cov hlau molten. Yog tias muaj qhov tshwj xeeb yuav tsum tau ua rau cov khoom siv, cov khoom siv yog qhia los ntawm cov cim tshuaj lom neeg tom qab tus lej. Ob tus lej tom qab "ib" sawv cev rau hom electrode core, vuam txoj haujlwm thiab vuam hom tam sim no. 3.3 Piv txwv ntawm vuam pas nrig specifications nyob rau hauv tus qauv no yog raws li nram no: ④E502, E505, E7Cr, E5Mo, E9Mo hom electrode yuav muab tso rau hauv lub tom ntej no modified GB5118 "high alloy Steel electrode" txheem, tab sis tshem tawm los ntawm tus qauv no. ⑤ Lub suffix ib XX. Qhia ib 15, ib 16, ib 17, ib 25 los yog ib tug 26. Lus Cim: Tag nrho txoj hauj lwm vuam tsis pom zoo rau electrodes nrog diameters sib npaug thiab ntau dua 5.0mm. 4 Cov Qauv Txuj Ci 4.1 Cov Lus Qhia Tshwj Xeeb 4.1.1 Cov kev qhia tshwj xeeb ntawm electrode yuav tsum ua tau raws li qhov yuav tsum tau ua hauv Table 3. 4.1.1.1 Tso cai rau kev tsim khoom ntawm 3.0mm aperture electrode es tsis txhob siv 3.2 electrode thiab 5.8mm aperture electrode hloov 6.0rnm electrode. 4.1.1.2 Vuam rods ntawm lwm yam specifications raug tso cai muab raws li kev pom zoo ntawm tog A thiab tog B. 4.1.2 Qhov ntev ntawm lub clamping kawg ntawm cov electrode yuav tsum tau raws li qhov yuav tsum tau nyob rau hauv cov lus 4. Table 4 Ntev ntawm clamping kawg 4.2 Vuam Core 4.2.1 yuav tsum tsis txhob muaj cov kab nrib pleb, npuas, residue thiab ntog tawm hauv cov tub ntxhais vuam ntawm cov electrode uas ua phem rau qhov zoo ntawm cov vuam. 4.2.2 Lub vuam tseem ceeb ntawm lub arc pib kawg ntawm lub electrode yuav tsum tau muab sib npaug, thiab qhov chaw nres nkoj vuam yuav tsum raug nthuav tawm kom paub meej tias qhov pib ntawm qhov pib yooj yim. Lub ntsiab ntawm cov electrode yuav tsum ua raws li cov hauv qab no: a. Sab nraud txoj kab uas hla ntawm lub electrode yuav tsum tsis txhob ntau tshaj 2.0 hli, thiab qhov ntev ntawm cov tub ntxhais exposed yuav tsum tsis txhob ntau tshaj 1.6 hli b. Txoj kab uas hla ntawm cov electrode yog 2.5mm thiab 3.2mm, thiab qhov ntev ntawm cov tub ntxhais raug yuav tsum tsis txhob siab tshaj 2.0mm raws li qhov ntev ntawm lub kaum sab xis c. Txoj kab uas hla ntawm cov electrode tshaj 3.2 hli, thiab qhov ntev ntawm cov tub ntxhais raug nthuav tawm raws li qhov ntev lub kaum sab xis yuav tsum tsis txhob siab tshaj 3.2 hli d. Txhua yam ntawm electrode aperture raws lub kaum sab xis ntawm lub voj voog yuav tsum tsis txhob ntau tshaj ib nrab ntawm lub voj voog. 4.2.3 Cov tub ntxhais ntawm cov electrode yuav tsum muaj lub zog compressive txaus kom tsis txhob muaj kev puas tsuaj hauv kev thauj mus los lossis siv. 4.2.4 Electrode eccentricity yuav tsum ua raws li cov cai hauv qab no: a. Sab nraud ntawm lub electrode yuav tsum tsis txhob ntau tshaj 2.5rnm, thiab eccentricity yuav tsum tsis txhob ntau tshaj 7%; b. Txoj kab uas hla ntawm 3.2mm thiab 4.0mm electrode, eccentricity yuav tsum tsis txhob ntau tshaj 5%; c. Lub aperture ntawm lub electrode yuav tsum tsis txhob tsawg tshaj li 5.0 hli, thiab lub eccentricity yuav tsum tsis txhob ntau tshaj 4%. Txoj kev suav ntawm eccentricity yog qhia raws li hauv qab no (Daim duab 1). Nyob rau hauv cov mis: T1 - vuam pas nrig hla ntu txheej txheej ** loj nyias tuab weld tub ntxhais aperture T2 - me me nyias thiab tuab weld core aperture ntawm tib tug ntoo khaub lig seem epidermal txheej 4.3 T-joint weld 4.3.1 Weld nto yuav tsum raug tshuaj xyuas los ntawm tib neeg lub qhov muag tsis muaj kab nrib pleb, vuam caws pliav, vuam burls thiab saum npoo cua qhov. 4.3.2 Cov ntu ntu ntawm cov vuam yuav tsum ua tau raws li cov hauv qab no yuav tsum tau tom qab polishing thiab etching: a, txhua sab weld yuav tsum tau fused rau los yog los ntawm ob lub phaj hlws ris; b. Ko taw loj ntawm txhua sab weld thiab qhov sib txawv ntawm qhov ntev ntawm ob lub qhov vuam yuav tsum ua raws li cov lus qhia hauv Table 5 (raws li qhia hauv daim duab 2). c. Lub convexity ntawm txhua qhov profile weld yuav tsum ua raws li qhov yuav tsum tau ua hauv daim duab 3. d. Xyuas los ntawm tib neeg lub qhov muag, yuav tsum tsis txhob muaj kab nrib pleb nyob rau hauv seem ntawm lub vuam. e. Tsis muaj vuam burls lossis cua qhov. 4.4 Molten hlau muaj pes tsawg leeg Cov tshuaj muaj pes tsawg leeg ntawm cautery hlau yuav tsum ua raws li qhov yuav tsum tau ua ntawm Table 1. 4.5 Lub cev muaj zog ntawm cov hlau cladding Cov kev ntsuam xyuas tensile ntawm fused hlau yuav tsum ua raws li cov cai hauv Table 6. Table 6 Lub cev muaj zog ntawm cov hlau cladding nag lossis daus hardening yog daws, ua raws li cua txias rau chav tsev kub. f. Cov qauv yog insulated ntawm 740 ~ 760 ℃ rau 4 h, ua raws li cua txias. g. Cov qauv yog insulated ntawm 730 ~ 750 ℃ rau 4 h, ua raws li cua txias. 4.6 Corrosion resistance of fused metal Qhov kev ntsuam xyuas corrosion ntawm fused hlau yuav tsum tau teev los ntawm kev pom zoo ntawm ob tog. 4.7 Metallographic qauv ntsiab lus ntawm fused hlau Cov ntsiab lus ferritic ntawm fused hlau yuav tsum tau teev nyob rau hauv kev pom zoo ntawm tog A thiab tog B. Stainless hlau phaj electrode rau rooj vag valve raw cov ntaub ntawv (2) Kev ntsuam xyuas ntawm tus qauv electrode ntawm txhua hom thiab specification yuav tsum. ua raws li qhov yuav tsum tau ua ntawm Table 7. Ua ntej qhov kev sim, cov electrode yuav tsum tau ci raws li qhov ntsuas kub kom qhuav los ntawm cov chaw tsim khoom. Haum rau kev sib txuas lus AC lossis DC vuam electrode sim xaiv kev sib txuas lus AC. Lub hauv paus khoom siv rau kev tshuaj xyuas cov tshuaj muaj pes tsawg leeg yuav yog carbon steel, siab alloy steel lossis stainless hlau phaj. Cov ntsiab lus carbon ntawm cov hlau fused yuav tsum tsis pub tshaj 0.04% ntawm cov electrode thiab cov khoom siv hauv cov khoom siv tshuaj lom neeg tsom xam ntawm E63O electrode muaj cov ntsiab lus carbon ntau ntawm 0.03%. Raws li cov cai ntawm Tshooj 5.4.3, cov khoom siv hauv paus nrog cov ntsiab lus carbon siab heev ntawm 0.25% kuj tuaj yeem siv. Base hlau rau tshuaj lom neeg muaj pes tsawg leeg tsom xam ntawm electrode yog cov ntsiab lus siab ntawm 0.25% ... Txuas: Stainless hlau phaj vuam pas nrig rau lub rooj vag valve raw khoom (1) 5 Test Method 5.1 Kev ntsuam xyuas ntawm tus qauv electrode ntawm txhua hom thiab specification yuav tsum Ua raws li qhov yuav tsum tau ua hauv Table 7. Ua ntej qhov kev sim, cov electrode yuav tsum tau ci raws li qhov ntsuas kub kom qhuav los ntawm cov chaw tsim khoom. Haum rau kev sib txuas lus AC lossis DC vuam electrode sim xaiv kev sib txuas lus AC. Table 7 Kev sim cov kev cai 5.2 Cov khoom siv hauv paus rau kev sim 5.2.1 Cov khoom siv rau T-joint weld test yog teev raws li hauv qab no: Austenitic hom thiab E630 hom vuam pas nrig yuav tsum siv stainless hlau phaj nrog fused hlau muaj pes tsawg leeg, los yog 0Cr19Ni9 los yog OCr19Ni9Ti tuab phaj. B.410, E410IiNMo E430 hom electrode yuav tsum yog OCr13, los yog 1Cr13 hom stainless hlau phaj. c. Lwm hom vuam rods yuav tsum tau ua los ntawm cov cua kub-resistant steel daim hlau los yog cov pa roj carbon steel los yog tsawg-alloy steel daim hlau uas muaj tib yam li cov fused hlau. 5.2.2 Cov khoom siv hauv paus siv rau kev tshuaj xyuas cov tshuaj muaj pes tsawg leeg yuav yog carbon steel, siab alloy steel lossis stainless hlau phaj. Cov ntsiab lus carbon ntawm cov hlau fused yuav tsum tsis pub tshaj 0.04% ntawm cov electrode thiab cov khoom siv hauv cov khoom siv tshuaj lom neeg tsom xam ntawm E63O electrode muaj cov ntsiab lus carbon ntau ntawm 0.03%. Raws li cov cai ntawm Tshooj 5.4.3, cov khoom siv hauv paus nrog cov ntsiab lus carbon siab heev ntawm 0.25% kuj tuaj yeem siv. Tag nrho lwm cov qauv thiab cov kev qhia tshwj xeeb ntawm cov tshuaj electrode tshuaj ntsuam xyuas nrog cov ntsiab lus carbon siab heev ntawm 0.25% hauv paus hlau