Monel 400 qhov chaw xa cov khoom tsis sib haum xeeb rau cov dej hiav txwv, cov kua qaub, thiab alkalis - ua rau lawv tseem ceeb uas tsis ua haujlwm tsis yog qhov kev xaiv. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb tau machined tshaj 12,000 Monel 400 qhov chaw rau hydraulic li qub, subsea twj tso kua mis vaj tse, thiab offshore winch shafts txij li thaum 2018. Feem ntau engineers tsis paub: xaiv txoj cai Monel 400 ib feem hinges nyob rau hauv casting ntau npaum li cas hmistry ntawm alloy. machining-induced kev nyuaj siab, thiab nto finish interacting nyob rau hauv koj tej kev pab cuam ib puag ncig.
Yog vim li cas Monel 400 Fail — Txawm tias thaum nws yog "tso cai"
Peb tau pom peb qhov tshwm sim tshwm sim thoob plaws 47 qhov ua tsis tiav nrog Monel 400 qhov chaw. Ua ntej: siv ASTM B164 bar Tshuag rau lub tog raj kheej lub tog raj kheej siab yam tsis muaj kev txheeb xyuas cov kev taw qhia ntawm cov nplej - ua rau muaj kev qaug zog ntxov ntxov ntawm qhov chaw sib txuas. Thib ob: siv cov txheej txheem stainless hlau txiav tsis ua haujlwm thaum lub sijhawm CNC tig, ua rau kev ua haujlwm nyuaj uas cuam tshuam qhov kev ntxhov siab thiab ua rau muaj kev ntxhov siab-corrosion tawg hauv chloride-nplua nuj condensate. Thib peb: hla tom qab machining acid pickling ua ntej passivation, tawm hauv embedded hlau hais uas pib galvanic pitting.
Monel 400's 67% nickel-30% tooj liab puag muab kev tiv thaiv kom tsis txhob muaj cov kua qaub xws li hydrofluoric - tab sis nws tsis muaj kev tiv thaiv oxidizing cov neeg ua haujlwm zoo li ferric chloride lossis cov roj chlorine ntub. Yog tias koj daim ntawv thov cuam tshuam nrog lub voj voog kom qhuav los yog thermal cycling saum 400 ° C, xav txog Monel K-500 hloov. Peb sim txhua Monel 400 billet nrog lub txim hluav taws xob spectroscopy - tsis yog rau Ni / Cu piv, tab sis rau cov ntsiab lus sulfur hauv qab 0.002%, uas cuam tshuam ncaj qha rau kub tearing susceptibility thaum peev casting.
Yuav Ua Li Cas Match Monel 400 Part rau Koj Lub Ntiaj Teb Tiag Tiag
Pib los ntawm kev kos koj lub hnab ntawv ua haujlwm - tsis yog lub siab thiab qhov kub thiab txias, tab sis cov dej nrawm nrawm, cov khoom thauj khoom, thiab kaw zaus. Piv txwv li:
- Lub tog raj kheej lub tog raj kheej: Yuav tsum tau centrifugally cam khwb cia Monel 400 nrog radial grain qauv-machined siv low-RPM, high-feed passes los khaws compressive nto residual kev nyuaj siab.
- Seawater valve rooj zaum: Kev thov forged Monel 400 (ASTM B564) nrog hardness ntawm 130-160 HB; annealed tom qab kawg sib tsoo kom tshem tawm microcracks los ntawm EDM recast txheej.
- Offshore winch center ncej chais: Yuav tsum tau tov-annealed ntawm 1177 ° C ± 14 ° C, ces dej-quenched-tsis muaj cua-txias-kom tiv thaiv sigma theem embrittlement nyob rau hauv lub tshav kub-cuam tshuam cheeb tsam.
Peb tsis lees txais 8.3% ntawm Monel 400 raw khoom batches vim tsis sib haum xeeb intergranular corrosion kuj-tshuaj xyuas los ntawm ASTM G28 Method A xeem. Qhov kev qhuab qhia ntawd cais cov hom phiaj tseem ceeb ntawm cov ntawv hnyav.
Tus nqi zais ntawm "Standard" Monel 400 Fabrication
Ntau tus neeg yuav khoom xav tias Monel 400 qhov chaw raug nqi 3 × stainless hlau - thiab nres qhov ntawd. Tab sis tag nrho cov tswv cuab tus nqi yog nyob ntawm tsib qhov sib txawv uas koj tswj tau: qhov ntev ntawm qhov kev ua siab ntev stack-up, nto roughness specification, kev kho cua sov validation txoj kev, soj ntsuam raws tu qauv qhov tob, thiab traceability Scope. Monel 400 piston pas nrig nrog ± 0.01 hli kam rau ua thiab Ra 0.4 μm tiav tus nqi 22% ntau dua ib qho nrog ± 0.05 hli thiab Ra 1.6 μm - tab sis tshem tawm 94% ntawm cov foob tsis txaus siab hauv cov tshuab hydraulic siab.
Peb siv Zeiss CONTURA G2 CMMs nrog calibrated ruby probes los xyuas qhov tseem ceeb diameters nyob rau hauv 20 ° C tswj ambient tej yam kev mob - tsis yog chav tsev kub. Vim li cas? Monel 400 tus coefficient ntawm thermal expansion yog 13.7 μm / m ° C. Lub viav vias 10 ° C qhia txog qhov yuam kev 0.137 hli ntawm 1,000 hli ncej. Tias yog vim li cas peb Monel 400 cov ntawv pov thawj ib feem suav nrog cov ntaub ntawv ib puag ncig nrog rau cov ntawv tshaj tawm.
Dab tsi los tom qab xaiv-Thiab yog vim li cas nws tseem ceeb tshaj qhov koj xav
Xaiv txoj cai Monel 400 ntu xaus thaum koj thawj tus qauv tuaj txog. Dab tsi hauv qab no txiav txim siab seb nws puas ua tau - lossis ua tsis tau ntsiag to. Peb ua peb cov kauj ruam tsis sib tham ntawm txhua qhov kev txiav txim: (1) ultrasonic kuaj ib ASTM E114 rau sab hauv porosity hauv cam khwb cia vaj tse, (2) ferroxyl kuaj ib ASTM A380 kom paub meej tias tsis muaj hlau tsis muaj paug, thiab (3) ntsev-txhaj tshuaj validation ib ISO 9227 rau 1,000 teev-tsis ua hauj lwm.
Peb cov neeg siv khoom nyob rau hauv North Hiav Txwv cov roj & roj cov dej num xav tau tag nrho batch traceability mus rau tus thawj Inconel 600 master alloy ntau siv hauv remelting. Peb tuav cov ntaub ntawv digital txuas rau txhua qhov Monel 400 rau nws cov xov tooj cua sov, forging tuag ID, CNC cuab yeej txoj kev log, thiab zaum kawg tshuaj xyuas lub sijhawm. Tsis muaj kev zam.
Monel 400 qhov kev ua tau zoo tsis tau lees paub los ntawm kev qhia tshwj xeeb - nws tau txais los ntawm kev qhuab qhia metallurgical, kev tswj cov txheej txheem, thiab kev siv lub ntiaj teb tiag. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kho txhua Monel 400 tivthaiv zoo li nws yuav ua haujlwm tsis muaj neeg saib xyuas ntawm 3,000 meters qhov tob. Vim feem ntau, nws ua.
