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1. Kev faib tawm thiab physicochemical yam ntxwv
| Lub koom haum daim ntawv | Feem ntau | Tshwj xeeb | Hom |
| Ferritic lub cev hom | 1. Siab resistivity | 1 Zoo heev kev nyuaj siab corrosion kuj | 0Cr13 (405) |
| 1Cr17 (430) | |||
| Hom Martensitic | 1. Lub siab tawv tawv yog loj, thiab cov ntsiab lus carbon nce nrog nws. | 1Cr13 (410) | |
| Hom Austenitic | 1 Lub coefficient ntawm linear expansion yog loj | 0Cr18Ni9(304) | |
| 0Cr19Ni11(308) | |||
| 0Cr23Ni13(309) | |||
| 0Cr25Ni20 (310) | |||
| 0Cr17Ni12Mo (316) | |||
| 0Cr17Ni12Mo2Nb/Ti(318) | |||
| 0Cr19Ni13Mo3(317) | |||
| 1Cr18Ni9Ti(321) | |||
| 0Cr18Ni11Nb(347) | |||
| 0Cr20Ni25Mo5Cu2 (385) | |||
| O-hlau duplex | 1. Intergranular corrosion kuj 2 kev nyuaj siab corrosion kuj 3 pitting kuj | 00Cr22Ni5Mo3N (2205) | |
| Precipitation hardening hom | 1. High hardness 2 tsis zoo plasticity | 0Cr17Ni4Cu4Mo2 (630) |
Ferritic lub cev hom
Hom Martensitic
Hom Austenitic
Cov nag lossis daus hardening
Ob: txheej txheem vuam
Kev xaiv ntawm stainless hlau vuam cov ntaub ntawv yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "homogeneity".
1. Ferritic stainless hlau Yog tias cov txheej txheem vuam yog rhuab ntawm 430-480 ° C rau lub sijhawm ntev thiab txias qeeb, nws yooj yim heev los tsim 475 ° C brittleness, thiab impurities yuav ua lub luag haujlwm catalytic. Cov txheej txheem vuam pom zoo kom tsis tshua muaj tam sim no, vuam ceev, tsis muaj oscillation, thiab qis interlayer kub tswj thaum lub sij hawm multilayer vuam. Txhawm rau weld tuab workpieces, weld seam yuav tsum tau hammered kom txo qis kev ntxhov siab.
2. Martensitic stainless hlau tshav kub-cuam tshuam cheeb tsam embrittlement thiab vuam txias tawg yuav tsum tau zam kom ntau li ntau tau thaum welding, feem ntau coj tus coj preheating ua ntej vuam (150-300 ° C) thiab tom qab vuam kub kho (700-750 ° C) kev ntsuas, kev siv cov kab loj loj, yog tias tsim nyog, koj tuaj yeem xaiv cov khoom siv vuam austenitic.
3. Austenitic stainless hlau Qhov cuam tshuam ntawm kub tawg thiab intergranular corrosion yog thawj qhov kev txiav txim siab rau kev vuam ntawm cov hlau tsis muaj steel, vim nws cov yam ntxwv ntawm lub cev, lub zog me me yuav tsum tau muab coj los siv rau vuam, cua txias sai, thiab kub interlayer qis. yuav tsum tau tswj thaum multilayer vuam. Siv zog kom muaj qhov zoo ntawm ferrite thaum vuam los tiv thaiv qhov tshwm sim ntawm thermal tawg. Hauv kev lag luam petrochemical xws li hydrogenation reactors thiab lwm yam khoom tshwj xeeb, tus naj npawb ntawm ferrites (FN) ntawm cov vuam tau hais meej meej, feem ntau xav tau 3-10.
4. Austria-hlau duplex stainless hlau muaj qhov tsis tshua muaj kev sib tsoo piv nrog austenitic hlau; Piv nrog rau cov hlau ferritic, tom qab vuam embrittlement yog tsawg, yog li nws muaj qhov zoo tshaj plaws weldability, tsis preheating los yog tom qab cua sov, thiab tsis muaj vuam kab nrib pleb. Txawm li cas los xij, thaum cua sov ntawm qhov kub thiab txias, nws muaj kev nyiam rau cov qoob loo loj hlob, thiab lub zog me me yuav tsum tau siv thaum vuam.
5. Los nag-hardened stainless hlau Vim lub siab hardness, tsis zoo toughness thiab plasticity ntawm hom hlau no, thiab loj welding residual kev nyuaj siab, nws yog ib qho yooj yim los tsim cov kab nrib pleb. Cov txheej txheem vuam zoo ib yam li martensitic stainless hlau tau pom zoo, tab sis qhov kub thiab txias yuav tsum tau nce ntxiv.
Nco tseg:Lub AWSA5.9 Standard for Stainless Steel Optical and Filler Wires thiab YB/T5092 Standard for Stainless Steel for Welding stipulate that the chemical analysis of melted specimens of together or stranded wire or filler wire yog tib qho kev sim uas xav tau rau kev faib tawm ntawm cov khoom no. daim ntawv. Ntawd yog, cov khoom siv kho tshuab thiab lwm yam kev sim, raws li cov neeg siv khoom xav tau.
Stainless hlau tes electrode GES series, tsab ntawv kawg B hauv cov khoom npe qhia lub tsho xiav, R qhia lub tsho liab, xws li GES-308R sawv cev rau lub tsho liab GES-308, GES-312B sawv cev rau daim tawv nqaij xiav GES-312 .
Post lub sij hawm: Oct-13-2022