- 04
- Aug
Kakaretso ea Tlhahlobo le Tokiso ea Sebopi sa Melting ea Induction ho Qoba Likotsi Tse Maholo
Summary of Inspection and Repair of Motlakase o Tsitsitseng Letlalo to Avoid Major Accidents
| Lintho tsa tlhokomelo le tokiso | Maintenance and repair content | Maintenance time and frequency | mantsoe | |
| sebabole
lekanya |
Hore na lesela la sebōpi le na le mapetsong |
Check for cracks in the crucible | Pele sebōpi se qala nako le nako | Haeba bophara ba marang-rang bo le ka tlase ho 22 mm , ha ho hlokahale ho e lokisa ha li-chips le lintho tse ling li ke ke tsa kenngoa ka har’a petso, ‘me li ntse li ka sebelisoa. Ho seng joalo, e hloka ho lokisoa pele e ka sebelisoa |
| Tokiso ea taphole | Ela hloko hore na ho na le mapetsong mateanong a lehlakoreng ho qoba lesela la sebōpi le lesoba la pompo | At the time of tapping | If cracks appear, repair them | |
| Tokiso ea lesela la sebōpi ka tlase ho sebōpi le mola oa slag | Visually observe whether the furnace lining at the bottom of the furnace and the slag line is locally corroded | Ka mor’a ho lahla | Haeba ho na le kutu e hlakileng, e hloka ho lokisoa | |
| ikutloa
araba
khoele
koalla |
Tlhahlobo e bonoang |
(1) Ho sa tsotellehe hore na karolo ea ho koala ea khoele e robehile kapa e entsoe ka carbonized
(2) Na ho na le motsoako leha e le ofe o tsoang linaheng tse ling o khomaretsoeng holim’a khoele? (3) Whether the insulating backing plate between the coils protrudes (4) Whether the assembly bolts of the tightening coil are loose |
1 nako / letsatsi
1 nako / letsatsi 1 nako / letsatsi 1 nako / likhoeli tse 3 |
Purge with compressed air in the workshop
Emisa li-bolts |
| Coil compression screw | Sheba ka mahlo hore na sekoti sa coil se hlephile | 1 nako / beke | ||
| tube ea rabara | (1) Whether there is water leakage at the rubber tube interface
(2) Sheba hore na tube ea rabara e khaotsoe |
1 nako / letsatsi
1 nako / beke |
||
|
Coil anti-corrosion joint |
Tlosa hose ea rabara ‘me u hlahlobe tekanyo ea ho bola ea lenonyeletso le thibelang kutu qetellong ea khola | 1 nako / likhoeli tse 6 | Ha lenonyeletso lena la anti-corrosion le senya ho feta 1/2, le hloka ho nkeloa sebaka ke le lecha. Hangata e fetoha lilemo tse ling le tse ling tse peli | |
| Cooling water temperature at coil outlet | Tlas’a maemo a boleng ba tšepe e qhibilihisitsoeng le matla a lekantsoeng, rekota boleng bo phahameng le bo tlase ba mocheso oa metsi a pholileng a lekala le leng le le leng la coil. | 1 nako / letsatsi | ||
| Ho tlosa lerole | Moea o hatelitsoeng ka har’a workshop o fefola lerōle le tšepe e qhibilihisitsoeng holim’a khoele. | 1 nako / letsatsi | ||
| Selena | Ho khaola lipeipi tsa metsi a sensor | 1 nako / lilemo tse 2 | ||
| ka
mengoapo ho kopanela liphate tataise khoele |
Thapo e pholileng ea metsi |
(1 ) Whether there is electricity leakage
(2) Sheba hore na thapo e kopane le mokoti oa sebōpi (3 ) Record the temperature of the cable outlet water under the rated power (4 ) Preventive measures taken to prevent accidents (5) Sheba hore na liboutu tse hokelang litheminareng li fifetse |
1 nako / letsatsi
1 nako / letsatsi 1 nako / letsatsi 1 nako / lilemo tse 3 1 nako / letsatsi |
Ho ea ka palo ea lithapo, fumana bophelo ba thapo e pholileng ka metsi e le lilemo tse tharo, ‘me e hloka ho nkeloa sebaka ka mor’a lilemo tse tharo. Haeba bolt e fetola ‘mala, e tiisa hape |
| Lintho tsa tlhokomelo le tokiso | Maintenance and repair content | Maintenance time and frequency | mantsoe | |
| sebabole
sekoahelo sa eona
|
Mohala o omileng |
(1) Eliminate dust on the insulating bakelite busbar splint
(2 ) Check whether the chain hanging the busbar splint is broken (3) Hore na foil ea koporo ea bareng ea bese e khaotsoe |
1 nako / letsatsi
1 nako / beke 1 nako / beke |
When the area of the disconnected copper foil accounts for 10% of the conductive area of the bus, it needs to be replaced with a new bus |
| Refractory castable | Lekola ka mahlo botenya ba lera la refractory le tšelang lesela la sekoaelo sa sebōpi | 1 nako / letsatsi | Ha botenya ba “refractory castable” bo ntse bo le 1/2, lesela la sekoaelo sa mollo le tlameha ho hahuoa bocha. | |
|
Oil pressure furnace cover
|
(1) Hore na ho na le ho lutla karolong ea ho tiisa
(2) Ho lutla ha liphaephe (3 ) Leakage of high pressure pipe |
1 nako / letsatsi
1 nako / letsatsi 1 nako / letsatsi |
If yes, repair it
Fetola |
|
| High pressure pipe | (1) Hore na ho na le mesaletsa ea tšepe e qhibilihisitsoeng peiping e nang le khatello e phahameng, jj.
( 2 ) Ho netefatsa polokeho, phapanyetsano |
1 nako / beke
1 nako / lilemo tse 2 |
||
|
Kenya oli e tlotsang |
(1) Mofuta oa letsoho: Karolo ea fulcrum ea sekoaelo sa mollo
(2) Electric type: sprocket drive bearing for shaft adjustment chain for furnace cover wheel (3) Mofuta oa Hydraulic: tataiso e tsamaisang |
|||
| tšollele
Tsamaea
Oil
Cylinder |
Phaephe e tlaase le khatello e phahameng ea silindara ea oli | (1 ) Whether there are traces of molten iron scald on the bearing part and the high-pressure pipe
(2 ) Oil leakage |
1 nako / beke
1 time / month |
Remove the cover for inspection |
|
Cylinder |
(1) Hore na ho na le ho lutla karolong ea ho tiisa
(2) Molumo o sa tloaelehang |
1 nako / letsatsi
1 nako / letsatsi |
Ha u sekamisetsa sebōpi, sheba cylinder block
Ha ho etsoa melumo e kang ho kokota holim’a silindara, li-bearings hangata li tsoa oli |
|
|
Sekepe se lekanyang sebōpi |
(1) Action check
Press the limit switch by hand, the oil pump motor should stop running (2) Hore na ho na le tšepe e entsoeng ka tšepe e qhibilihisitsoeng holim’a switch ea moeli |
1 nako / beke
1 nako / beke |
||
| Kenya oli e tlotsang | Likou tsohle tsa mafura | 1 nako / beke | ||
| High pressure control
raka |
Appearance inspection inside the cabinet |
(1) Check the operation of each indicator light bulb
(2 ) Whether the parts are damaged or burned out (3 ) Clean the pan with compressed air in the workshop |
1 time / month
1 nako / beke 1 nako / beke |
|
|
Circuit breaker vacuum switch |
(1) Pase ea ho hloekisa ke lebitso
Phupu ea vacuum e tšoeu e bosoeu ebile e boreleli, tekanyo ea vacuum e fokotsehile (2) Ho lekanya tšebeliso ea li-electrode |
1 nako / likhoeli tse 6
1 time / month |
If the gap exceeds 6 mm, replace the vacuum tube |
|
| Main switch cabinet |
Phetoho ea moea ea electromagnetic |
(1 ) Roughness and wear of the main contact
(2) Tloo
(3) Hore na boto ea ho tima mollo e na le carbonized |
1 nako / likhoeli tse 6
1 nako / likhoeli tse 6
1 nako / likhoeli tse 6 |
Ha bohale bo le boima, bo sila ka faele, letlalo la lehlabathe, joalo-joalo.
Ha seaparo sa ho kopana se feta 2/3, fetola lebitso Eketsa oli ea spindle ho bere e ‘ngoe le e’ ngoe le molamu o kopanyang Use sanding to remove the carbonized part
|
| Lintho tsa tlhokomelo le tokiso | Maintenance and repair content | Maintenance time and frequency | mantsoe | |
| Main switch cabinet | ( 4) Ho tlosa lerōle | 1 nako / beke | Clean with compressed air in the workshop, and wipe the dust on the insulators with a cloth | |
| Ho thibela ho thibela | Use a 1000 volt megger to measure the main circuit and greater than 10M Ω | |||
| Phetoho ea phetoho |
Fetisa switch |
(1) Lekanya khanyetso ea insulation
(2 ) Rough switch main connector (3) Li-bolts tse kholo tse kopanyang potoloho li hlephile ebile li chesa haholo |
1 nako / likhoeli tse 6
1 time / month 1 nako / likhoeli tse 3 |
Pakeng tsa conductor le fatše, sebelisa megohmmeter ea 1000 volt ho metha e kholo ho feta.
1M Ω Sepolishe kapa phapanyetsano |
| ho laola boemo
tsamaiso
raka
tora |
Appearance inspection inside the cabinet | (1) Whether the components are damaged or burned out
(2 ) Whether the components are loose or fall off |
1 nako / beke
1 nako / beke |
|
|
Teko ea ketso |
(1 ) Check whether the indicator light can be on
(2) Potoloho ea alamo Action should be checked according to alarm conditions |
1 nako / beke
1 nako / beke |
||
| Ho tlosa lerōle ka har’a kabinete | Clean with compressed air in the workshop | 1 nako / beke | ||
|
Contactor for auxiliary machine |
(1) Check the roughness of the contact, if the roughness is severe, polish it smoothly with fine sand
(2) Exchange contacts Fetola mabitso ha a se a tsofetse haholo |
1 nako / likhoeli tse 3
1 nako / lilemo tse 2 |
Especially the frequently used contactor for tilting furnace lid | |
| Transformer reactor | Sheba ponahalo | (1) Hore na ho na le ho lutla ha oli
(2 ) Whether the insulating oil is added to the specified position |
1 nako / beke
1 nako / beke |
|
| Mocheso oa transformer le reactor | Lekola pontšo ea thermometer ea letsatsi le letsatsi, e tlase ho boleng bo boletsoeng | 1 nako / beke | ||
| Modumo le ho thothomela | (1 ) Usually check by listening and touching
(2 ) Instrument measurement |
1 nako / beke
1 nako / selemo |
||
| Insulating oli e mamella tlhahlobo ea voltage | E tlameha ho fihlella boleng bo boletsoeng | 1 nako / likhoeli tse 6 | ||
| Tobetsa ho fetola | (1) Sheba hore na phetoho ea pompo e felile
(2 ) Check the roughness of the tap adapter |
1 nako / likhoeli tse 6
1 nako / likhoeli tse 6 |
Use fine sand to polish and replace it with a new one when it is severely rough | |
| Capacitor bank | Sheba ponahalo | (1) Hore na ho na le ho lutla ha oli
(2 ) Whether each terminal screw is loose |
1 nako / letsatsi
1 nako / beke |
If slack occurs , the terminal part will be discolored due to overheating |
| Exchange capacitor contactor
Ho tlosa lerole |
(1) The roughness of the contact
1 ) Use a file to smooth the rough part 2) Ha ho apara ho le matla, fetola lenonyeletso (2) Mocheso oa ho kopana oa phahama Sebelisa moea o hatelitsoeng ka har’a workshop ho hloekisa li-insulators ka lesela |
1 nako / likhoeli tse 6
1 nako / beke 1 nako / beke |
At least 1 time / month |
|
| Mocheso o potolohileng banka ea capacitor | Lekanya ka mercury thermometer | 1 nako / letsatsi | Ventilated , e le hore mocheso o potolohileng o se ke oa feta 40 deg.] C | |
| Hydraulic device |
Oli ea hydraulic |
(1) Hore na ho na le phetoho leha e le efe ’mala oa oli bophahamong ba boemo ba oli e bontšitsoeng ke sekala sa boemo ba oli
(2) Check the amount of dust in the hydraulic oil and the quality of the oil (3) Measuring temperature |
1 nako / beke
1 nako / likhoeli tse 6
1 nako / likhoeli tse 6 |
Haeba boemo ba oli bo theoha, ho na le ho lutla potolohong
When the quality is poor , change the oil |
| khatello ea khatello | Whether the tilting pressure is different from usual, when the pressure drops, adjust the pressure to the normal value | 1 nako / beke | ||