Thaum tshav kub kub hloov ntawm kub Dip Aluminizing txheej thaum lub sij hawm Solidification

Kub dip aluminizing txheej yog ib txoj hauv kev zoo tshaj plaws ntawm kev tiv thaiv nto rau steels thiab maj mam tau txais koob meej. Txawm hais tias kev rub nrawm yog ib qho tseem ceeb tshaj plaws los tswj cov txheej txheej ntawm cov khoom siv aluminizing, txawm li cas los xij, muaj qee qhov kev tshaj tawm ntawm kev ua lej ntawm kev rub ceev thaum lub sij hawm kub dip txheej txheem. Txhawm rau piav qhia txog kev sib raug zoo ntawm kev rub ceev, txheej txheej thickness thiab lub sij hawm solidification, lub hauv paus ntsiab lus ntawm huab hwm coj thiab kub hloov thaum lub sij hawm aluminizing txheej txheem yog soj ntsuam nyob rau hauv daim ntawv no. Cov qauv lej yog ua raws li Navier-Stokes equation thiab ntsuas kub hloov pauv. Kev sim siv cov cuab yeej tsim los ntawm tus kheej yog ua los xyuas cov qauv lej. Tshwj xeeb, aluminium yaj yog purified ntawm 730 ℃. Txoj kev Cook-Norteman yog siv rau pretreatment ntawm Q235 steel daim hlau.

Qhov kub ntawm kub dip aluminizing yog teem rau 690 thiab ℃ lub sij hawm dipping yog teem rau 3 min. Lub tshuab hluav taws xob ncaj qha nrog kev hloov pauv nrawm nrawm yog siv los kho qhov rub nrawm. Qhov kub hloov pauv ntawm txheej yog kaw los ntawm lub ntsuas kub infrared, thiab cov txheej tuab yog ntsuas los ntawm kev siv cov duab tsom. Cov txiaj ntsig tau txais txiaj ntsig kev sim qhia tau hais tias cov txheej txheej thickness yog proportional rau lub square cag ntawm rub ceev rau Q235 steel phaj, thiab hais tias muaj ib tug linear kev sib raug zoo ntawm txheej thickness thiab solidification lub sij hawm thaum lub rub ceev yog qis dua 0.11 m / s. Qhov kev twv ua ntej ntawm cov qauv npaj tau haum zoo nrog kev soj ntsuam kev soj ntsuam ntawm cov txheej tuab.

1 Introduction

Kub dip aluminizing steel muaj ntau dua corrosion kuj thiab xav tau ntau yam khoom siv piv nrog kub dip galvanizing hlau. Lub hauv paus ntsiab lus ntawm kub dip aluminizing yog tias pretreated steel daim hlau yog dipped rau hauv molten aluminium alloys ntawm ib tug tej yam kub rau lub sij hawm tsim nyog. Aluminium atoms diffuse thiab hnov ​​​​mob nrog Hlau atoms los tsim cov txheej txheem sib xyaw ntawm Fe-Al compound thiab aluminium alloy uas muaj zog sib txuas nrog cov matrix kom ua tau raws li qhov yuav tsum tau muaj kev tiv thaiv thiab ntxiv dag zog rau saum npoo. Nyob rau hauv luv luv, kub dip steel khoom yog ib yam ntawm cov khoom sib xyaw nrog cov khoom zoo thiab tus nqi qis. Tam sim no, xws li cov tswv yim xws li Sendzimir, Tsis-oxidizing txo, Tsis-oxidizing thiab Cook-Norteman feem ntau yog ua hauj lwm rau kub dip aluminizing, los ntawm cov loj-scale zus tau tej cov yuav tsum tau paub vim lawv high efficiency ntawm ntau lawm, ruaj khov zoo ntawm cov khoom thiab tsawg. ua paug. Ntawm plaub lub thev naus laus zis, Sendzimir, Non-oxidizing txo thiab Non-oxidizing yog tus cwj pwm los ntawm cov txheej txheem nyuaj, cov khoom siv kim thiab cov nqi siab. Niaj hnub no, txoj kev Cook-Norteman tau siv dav vim qhov zoo ntawm cov txheej txheem hloov pauv, tus nqi qis thiab ib puag ncig tus phooj ywg.

Rau cov txheej txheem kub dip aluminizing, txheej txheej thickness yog qhov tseem ceeb rau kev soj ntsuam cov txheej txheem zoo thiab ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom ntawm txheej. Yuav ua li cas tswj cov txheej thickness thaum lub sij hawm kub dip txheej txheem yog li ntawd xam tau tias yog ib qho tseem ceeb nyob rau hauv guaranteeing ib tug zoo heev txheej zoo. Raws li peb twb paub lawm, muaj kev sib raug zoo ntawm kev sib raug zoo ntawm cov txheej thickness, rub ceev thiab solidification lub sij hawm. Yog li ntawd, txhawm rau txhawm rau tswj cov txheej txheem kub dip thiab txhim kho cov txheej txheem zoo, nws yog ib qho tsim nyog yuav tsum tsim kom muaj cov qauv lej uas tuaj yeem piav qhia txog qhov kev sib raug zoo no. Hauv daim ntawv no, tus qauv lej ntawm txheej tuab thiab rub nrawm yog muab los ntawm Navier-Stokes equation. Thaum tshav kub kub hloov thaum lub sij hawm txheej solidification yog soj ntsuam, thiab kev sib raug zoo ntawm txheej thickness thiab solidification lub sij hawm yog tsim. Cov kev sim ntawm kub dip aluminizing Q235 steel daim hlau raws li Cook-Norteman txoj kev yog nqa tawm nrog cov khoom siv ua tus kheej. Qhov tiag kub thiab thickness txheej yog ntsuas raws li. Cov theoretical derivations tau piav qhia thiab lees paub los ntawm kev sim.

2 Tus Qauv Zauv

2.2 Thaum tshav kub kub hloov thaum lub sij hawm solidification ntawm txheej Txij li thaum lub txhuas txheej yog nyias nyias, nws yuav muab tau raws li pa.ralcov kua dej ntws los ntawm qhov chaw tiaj tus ntawm plated pieces. Tom qab ntawd nws tuaj yeem txheeb xyuas los ntawm x kev taw qhia. Daim duab schematic ntawm txheej-substrate tau nthuav tawm hauv daim duab 2 thiab qhov kub thiab txias faib tau pom hauv daim duab 3.
Yog xav paub ntxiv, thov hu rau peb.