Vim li cas tus nqi sib txawv ntawm tib hom nruab nrab zaus induction melting rauv?

Qhov nruab nrab zaus induction melting muaj cua sov siab, ua haujlwm siab, tsis muaj qhov kub hnyiab, tsis tshua muaj cua sov, qhov kub thiab txias ntawm chav ua haujlwm, txo cov pa luam yeeb, txuag hluav taws xob, txhim kho cov khoom tsim tau, txhim kho kev ua haujlwm, txo kev siv zog, thiab chav huv huv. Tshwj xeeb tshaj yog rau cam khwb cia hlau, lub induction melting rauv yog qhov zoo kom tau cov kua qaub-sulfur tsawg uas tsis sib xws los ntawm cupola. Thaum xaiv qhov nruab nrab zaus melting rauv, lub tuam txhab foundry yuav tsum xaiv cov hauv qab no raws li lub peev xwm transformer, ntau lawm yuav tsum tau, peev quota, thiab lwm yam, thaum yuav khoom.

1.   Medium frequency induction melting condition

1.1 Nruab nrab zaus induction melting transformer muaj peev xwm

Tam sim no, rau SCR tag nrho-bridge parallel inverter IF fais fab mov, tus lej kev sib raug zoo ntawm transformer muaj peev xwm thiab lub hwj chim mov yog: tus nqi ntawm transformer muaj peev xwm = tus nqi ntawm lub hwj chim mov x 1.2

Rau IGBT ib nrab-bridge series inverter IF fais fab mov (feem ntau hu ua ib qho rau ob, ib qho rau melting ib lub rwb thaiv tsev, ob qho tib si rau kev khiav hauj lwm ib txhij), cov zauv sib raug zoo ntawm transformer muaj peev xwm thiab lub hwj chim mov yog: tus nqi ntawm transformer muaj peev xwm = tus nqi ntawm lub hwj chim. khoom x 1.1

Lub transformer yog ib tug rectifier transformer. Txhawm rau txo qhov cuam tshuam ntawm kev sib haum xeeb, nws yog qhov ua tau kom deb li deb tau rau lub dav hlau tshwj xeeb, uas yog, ib qho nruab nrab zaus fais fab mov yog nruab nrog lub rectifier transformer.

1.2 IF induction fuse kab voltage

Rau nruab nrab zaus fais fab mov qis dua 1000KW, peb-theem tsib-xaim 380V, 50HZ muaj zog siv, thiab 6-pulse ib leeg-rectifier nruab nrab zaus fais fab mov yog teeb tsa. Rau nruab nrab-zaus fais fab mov siab tshaj 1000KWY, lub hom phiaj yog siv 660V cov khoom siv hluav taws xob (qee lub tuam txhab siv 575V lossis 750V). Vim hais tias 575VZ lossis 750V yog qhov tsis yog-tus qauv voltage, cov khoom siv tsis zoo yuav, nws pom zoo kom tsis txhob siv). Configure 12-pulse ob-rectifier IF fais fab mov rau ob qho laj thawj: ib qho yog txhawm rau nce qhov ntsuas ua haujlwm voltage los ntawm kev nce cov kab hluav taws xob tuaj; qhov thib ob yog loj Cov harmonics generated los ntawm lub hwj chim yuav cuam tshuam rau daim phiaj. Ob chav rectification tuaj yeem tau txais DC tam sim no ncaj nraim. Lub load tam sim no yog ib lub voj voos, thiab lub load voltage yog nyob ze rau sine yoj, uas txo qhov cuam tshuam ntawm daim phiaj cuam tshuam rau lwm yam khoom siv.

Qee cov neeg siv dig muag nrhiav qhov hluav taws xob siab (qee 1000KW siv 900V kab hluav taws xob), thiab ua tiav lub zog txuag txij li tam sim no qis. Kuv tsis paub yog tias qhov no yog nyob ntawm tus nqi ntawm lub neej ntawm lub tshuab hluav taws xob. Nws tsis tsim nyog rau qhov poob, high voltage yog ib qho yooj yim kom luv lub neej ntawm cov khoom siv hluav taws xob. , tooj liab platoon, cable qaug zog, kom lub neej ntawm hluav taws xob rauv hluav taws xob txo qis heev. Tsis tas li ntawd, cov khoom siv hluav taws xob siab rau lub tshuab hluav taws xob rau cov khoom siv hluav taws xob, cov khoom siv raw yog txo cov khoom siv, txuag nqi. Cov tuam txhab hluav taws xob hluav taws xob yeej txaus siab ua li ntawd (tus nqi siab qis.) Qhov kawg poob tseem yog kev siv hluav taws xob rau cov tuam ntxhab.

2. Capacity requirements

Feem ntau, lub peev xwm ntawm qhov nruab nrab zaus induction melting rauv tuaj yeem txiav txim siab los ntawm qhov hnyav ntawm tus kheej thiab qhov hnyav ntawm cov hlau molten xav tau rau txhua hnub ua haujlwm. Tom qab ntawd txiav txim siab lub zog thiab zaus ntawm IF fais fab mov. Cov khoom siv cua sov induction yog cov khoom siv tsis yog qauv. Tam sim no, tsis muaj tus qauv hauv lub tebchaws, thiab kev teeb tsa dav dav ntawm kev lag luam tau qhia hauv Table 1.

Table 1 Medium zaus induction melting rauv xaiv tsis

Nws tuaj yeem pom ntawm rooj 1 uas lub zog ntom ntom ntawm lub teeb meem nruab nrab hauv nruab nrab yog li 500 kW, tsuas yog txiav txim siab lub neej thiab kev tswj hwm ntau lawm. Nyob rau hauv lub zog ceev ceev, electromagnetic stirring yuav ua rau muaj zog scouring ntawm lub hauv ob sab phlu, thiab cov yuav tsum tau rau hauv ob sab phlu cov ntaub ntawv, lub cub tawg txoj kev, melting txheej txheem, cov ntaub ntawv, thiab auxiliary cov ntaub ntawv yog siab. Raws li cov kev teeb tsa saum toj no, lub sijhawm melting ntawm ib lub qhov cub yog 600 feeb (nrog rau kev pub mis, khaws cov impurities, quenching thiab tempering lub sij hawm). Yog tias tsim nyog kom txo lub sij hawm melting rau ib lub cub tawg, lub zog ceev ntawm lub hwj huam tuaj yeem nce ntxiv los ntawm 800 KW / ton thaum lub peev xwm ntawm lub qhov cub lub cev tsis tu ncua.

3. Kev xaiv tus qauv

Raws li kev lag luam tus cwj pwm, cov khoom siv melting rauv ntawm aluminium alloy qauv nrog lub reducer raws li txoj kev tilting feem ntau hu ua aluminium plhaub rauv. Lub induction melting rauv ntawm steel qauv nrog hydraulic lub tog raj kheej li lub tilting rauv yog feem ntau hu ua steel plhaub rauv. Qhov sib txawv ntawm ob yog qhia hauv Table 2 thiab daim duab 1.

Table 2 Lub plhaub steel rauv thiab lub plhaub txhuas lub qhov cub sib txawv (siv 1 tuj cam khwb cia hlau rauv ua piv txwv)

Piv nrog rau aluminium plhaub rauv, qhov zoo ntawm steel plhaub rauv yog tsib lub ntsiab lus:

1) Rugged thiab elegant, tshwj xeeb tshaj yog rau cov qhov cub muaj peev xwm loj, uas yuav tsum muaj cov qauv nruj nruj. Los ntawm qhov chaw nyab xeeb ntawm lub qhov cub tilting, sim siv lub plhaub steel rauv.

2) Lub yoke ua los ntawm silicon steel daim ntawv shields thiab emits magnetic kab generated los ntawm induction kauj, txo magnetic to, txhim kho thermal efficiency, nce ntau lawm, thiab txuag zog los ntawm 5% -8%.

3) Lub xub ntiag ntawm lub qhov cub npog txo cov cua sov thiab ua kom muaj kev ruaj ntseg ntawm cov khoom siv.

4) Lub neej ua haujlwm ntev, txhuas yog ntau oxidized ntawm qhov kub thiab txias, ua rau hlau toughness qaug zog. Nyob rau hauv qhov chaw tsim khoom lag luam, nws feem ntau pom tau tias cov txhuas plhaub rauv lub plhaub tau siv rau ib xyoos lossis yog li ntawd tawg, thiab lub plhaub steel rauv muaj tsawg dua tam sim no, thiab cov kev pab cuam lub neej ntawm cov cuab yeej zoo heev tshaj li ntawm txhuas plhaub. rauv.

5) Kev nyab xeeb kev ua tau zoo Lub plhaub steel rauv yog zoo dua li lub plhaub plhaub rauv. Thaum lub plhaub aluminium rauv yog smelted, aluminium plhaub tau yooj yim deformed vim qhov kub thiab txias siab, thiab kev nyab xeeb tsis zoo. Lub plhaub steel rauv siv lub tshuab hydraulic tilting rauv thiab muaj kev nyab xeeb thiab txhim khu kev qha.

Vim li cas tus nqi ntawm tib tus qauv sib txawv? Koj xaiv “qhov nruab nrab zaus melting rauv” li cas?

Tus nqi ntawm tib hom nruab nrab zaus induction rauv yog txawv heev. Siv 1 tuj rauv uas feem ntau siv ua piv txwv. Cov nqi lag luam qee zaum txawv ob peb zaug, uas cuam tshuam nrog cov qauv ntawm lub tshuab hluav taws xob, kev xaiv cov khoom, cov ntsiab lus kev, kev pab cuam tom qab muag thiab zoo. Ib tug multifaceted yam tseem ceeb.

Cov khoom sib txawv

Rauv plhaub thiab tus quab: Nyob rau hauv kev xaiv ntawm lub plhaub ntawm lub plhaub txhuas lub qhov cub, tus qauv 1 tuj txhuas plhaub rauv muaj lub cub tawg qhov hnyav ntawm 400Kg thiab lub thickness ntawm 40 hli. Qee cov tuam ntxhab feem ntau muaj qhov hnyav thiab tsis txaus thickness. Qhov tseem ceeb tshaj plaws ntawm lub plhaub steel rauv yog qhov kev xaiv ntawm tus quab. Kev xaiv ntawm tib hom steel plhaub rauv yoke yog txawv. Tus nqi sib txawv loj heev. Feem ntau, ib daim ntawv tshiab high-permeability txias-dov silicon steel ntawv nrog Z11 yuav tsum tau xaiv. Silicon steel Lub thickness ntawm daim ntawv yog 0.3 hli, thiab cov qauv contoured yog saws. Sab hauv arc nto thiab sab nrauv arc ntawm induction coil yog tib yam, yog li tus quab tuaj yeem txuas nrog rau sab nraud ntawm induction coil, thiab qhov siab tshaj plaws tuav coil yog outwardly radiated, thiab tus quab yog ob sab. steel phaj thiab stainless hlau yog clamped, welded thiab tsau, thiab txias los ntawm dej.

(Qee lub tuam txhab siv pov tseg, tsis muaj kev taw qhia, lossis txawm tias cov ntawv silicon steel raug tshem tawm los ntawm kev siv cov khoom siv los ua yokes,)

Copper tube thiab tib kab: Lub hauv paus ntawm lub qhov cub melting yog cov nyhuv ntawm qhov txias extrusion tooj liab raj thiab cam khwb cia tooj liab raj ntawm induction coil. T2 txias-extruded tooj liab raj nrog loj hla-section yuav tsum tau siv. Kev kho qhov chaw rwb thaiv tsev ntawm lub raj tooj liab yog electrostatically txau kom ua tiav Class H rwb thaiv tsev. Txhawm rau tiv thaiv nws lub zog rwb thaiv tsev, daim kab xev mica thiab cov iav tsis muaj alkali-dawb yog qhwv thiab qhwv rau saum npoo ib zaug, thiab tom qab ntawd siv cov ntaub ntawv noo noo-pov thawj insulating enamel. Muaj qee qhov sib txawv ntawm qhov lem ntawm lub kauj. Thaum lub refractory mortar coated nyob rau hauv lub kauj, cov av nplaum refractory yuav tsum tau infiltrated rau hauv qhov sib txawv kom ntxiv dag zog rau lub adhesion ntawm cov kua nplaum ntawm lub kauj ntawm lub kauj. Tom qab cov cement refractory tau tsim, lub puab nto yog smoothed los pab txhawb kev tshem tawm hauv ob sab phlu. Lub kauj yog kev tiv thaiv, thiab ob peb stainless hlau dej-txias rings yog ntxiv rau sab sauv thiab qis kawg ntawm lub kauj kom ua rau tag nrho rigidity thiab pab kom sov dissipation.

(Qee lub tuam txhab siv tooj liab lossis T3 tooj liab, uas muaj hluav taws xob tsis zoo thiab yooj yim tawg thiab xau.)

SCR: Lub thyristor siv los ntawm ntau lub tuam txhab yog feem ntau tsis zoo. Qhov zoo ntawm thyristor yog qhov zoo, cov tshuaj tiv thaiv yog ceev thiab qhov tsis ua hauj lwm yog tsawg. Yog li ntawd, thyristors ntawm cov tuam txhab paub zoo raug xaiv, thiab qhov zoo yog txhim khu kev qha thiab ruaj khov.

(Thaum xaiv, cov chaw tsim khoom ntawm lub qhov cub hluav taws xob yuav tsum tau qhia txog cov chaw tsim khoom ntawm thyristor, thiab cov khoom pov thawj ntawm cov chaw tsim khoom thyristor tau nthuav tawm. Cov kev tswj xyuas thyristor ntawm H zoo yog: Xiangfan Taiwan Semiconductor Co., Ltd., Xi ‘ib lub koom haum ntawm Lub Zog Hluav Taws Xob, thiab lwm yam)

Power cabinet: The regular manufacturer uses the standard spray panel cabinet. Not a tin-painted cabinet. And the size specifications of the power cabinet are standard. Inconsistent manufacturers of power cabinets have also shrunk, height, width and thickness are not enough, and even some of the reactors are placed outside the power cabinet. The regular manufacturer’s IF power supply is equipped with a low-voltage switch inside, which does not require the user to configure the voltage switch cabinet. Some non-regular manufacturers do not have a low-voltage switch installed inside the power supply. Invisible increases the user’s cost (good quality low-voltage switches are Huanyu, Chint, Delixi, etc.).

Capacitor: Qhov tseem ceeb tshaj plaws capacitor txee rau reactive zog them yuav tsum tau nruab nrog ib tug txaus tus nqi. Feem ntau, tus nqi them ntawm lub capacitor yog 18–20 npaug ntawm lub zog ntawm lub hwj chim: Capacitance them nyiaj (Kvar) = (20- 18) x fais fab mov. Thiab siv cov capacitors ntawm cov tuam txhab tsis tu ncua.

Reactor: Cov khoom tseem ceeb ntawm lub reactor yog silicon steel ntawv. Cov khoom tshiab uas tsim los ntawm cov tuam txhab lag luam niaj hnub yuav tsum tau siv, thiab cov ntaub ntawv siv silicon steel tsis tuaj yeem siv dua.

Water pipe clamp : In the complete set of medium frequency melting furnace, there are a large number of water pipes connected. Strictly speaking, stainless steel clamps should be used. It is better to use copper slip knots. It is convenient to install and disassemble the knots without maintenance. It is especially suitable for application on water-cooled cables, which is conducive to current transmission and does not cause water leakage, which is safe and reliable.

Ntxiv rau cov ntsiab lus saum toj no, muaj lwm cov khoom siv los xaiv, xws li inverter tsis-inductive capacitors, tsis yog inductive resistors, dej-txias cables, txuas tooj liab tuav, kav dej, thiab lwm yam, uas yuav cuam tshuam rau qhov zoo thiab tus nqi. ntawm cov khoom siv. Ntawm no peb tsis piav qhia meej, Kuv vam tias koj tuaj yeem ua tib zoo saib thaum xaiv yuav, sim xav kom cov chaw tsim hluav taws xob melting kom muab cov ntsiab lus ntawm cov khoom tseem ceeb thiab cov chaw tsim khoom, tsis tuaj yeem tsuas yog tsis quav ntsej cov qauv thiab cov khoom siv zoo tshaj tus nqi.

Txij li thaum lub tshuab hluav taws xob nruab nrab yog cov khoom tsis yog cov qauv, nws raug txiav kom rov ua dua tshiab, thiab qhov zoo yog ze rau tus nqi.

4, technical zog

Cov tuam txhab lag luam niaj hnub tau nqis peev ntau ntawm cov neeg ua haujlwm thiab cov khoom siv rau kev tshawb fawb thev naus laus zis, nrog cov cuab yeej siv siab heev thiab cov thev naus laus zis zoo, qhia txog kev sib txawv ntawm kev sib tsoo ceev, kev siv hluav taws xob thiab khoom siv tsis ua haujlwm. Ntau lub tuam txhab tsis muaj cov xwm txheej rau kev cog qoob loo, tus nqi qis dua, thiab qhov cuam tshuam ntawm kev sib dhos thiab commissioning txheej txheem ntawm qhov zoo yog loj heev. Cov tuam txhab sib txawv, cov txheej txheem sib txawv, thiab cov nqi sib txawv kuj tsim cov khoom sib txawv.

5, kev pab cuam tom qab muag

Kev pabcuam zoo tom qab muag yog qhov lav ntawm cov khoom siv zoo. Nws yog inevitable thaum cov khoom siv electromechanical poob. Qhov no yuav tsum muaj kev pab cuam tom qab muag zoo. Cov tuam txhab lag luam niaj hnub muaj cov neeg ua haujlwm txaus thiab muaj peev xwm los lav kev pabcuam tomqab muag. Qhov nruab nrab zaus induction melting rauv muaj lub sijhawm lav ib xyoos tom qab rov ua haujlwm zoo li qub thiab tsis muaj zog ua ntej tawm hauv lub hoobkas. Lub sijhawm no, txhua yam khoom siv tsis ua haujlwm los ntawm lub luag haujlwm tsis yog tib neeg yuav yog lub luag haujlwm ntawm cov chaw tsim khoom.

Nyob rau hauv luv luv, lub tuam txhab foundry yuav tsum xaiv cov cuab yeej uas tsim nyog tshaj plaws rau cov xwm txheej tam sim no ntawm kev lag luam raws li qhov xav tau tiag tiag. Hauv kev xaiv cov txheej txheem, cov chaw tsim khoom yuav tsum sib piv cov khoom tsim, kev teeb tsa, kev daws teeb meem, thiab kev pabcuam tomqab muag ntawm cov khoom siv los xaiv cov khoom siv txaus siab.

Qhov nruab nrab zaus rauv muaj xws li, transformer, cua-qhib, harmonic lim, inverter txee, dej cable, induction coil, cub plhaub thiab lwm yam. Txawv configurations yog ua tau rau txhua qhov ntau lawm. Tej zaum nws yuav txawv nyob ntawm cov khoom, daim ntawv thiab tus nqi. Nws yog qhov zoo tshaj los tham txog tus nqi sib cais. Tam sim no, lub tshuab hluav taws xob nruab nrab yog tsim los ntawm lub zog siab thiab muaj peev xwm loj. Lub 1 tuj nruab nrab zaus rauv yog twb me me heev. Tam sim no, tsis muaj ntau yam tshiab, tab sis thev naus laus zis yog paub tab thiab pheej yig.