The service life of electrobath affected manufacturing cost directly, it is the life that what respect can affect electrobath, how is lateral liner damaged repaired? See detailed introduction please.
Aluminous electrobath is rectangular steel casing normally, liner carbon brick. Electrobath horizontally pivoted hung has one carbon in relief Ji, its carbon pledges bottom land is shade Ji. Electroanalysis reductive the metallic aluminous fuse-element that come out is deposit at Ji of bottom land shade. The oxygen that in relief Ji gives off and reaction of carbolic in relief Ji generate CO and CO2. The electrolyte inside groove and aluminium hold melt position, lie between proper time from aluminous fluid is given off inside groove, and to the Al2O3 that certain amount adds inside groove and cryolite (3NaF.AlF3) . Electroanalysis temperature is 900~1000 ℃ .
The influence is aluminous a few crucial factors of life of electrobath chamfer line are groovy housing strength, the liner material, project that build furnace and roast start an operation. Among them hind two can rely on the regulations that carries out effective in construction and production to solve, and before two must be made in design phase reasonable processing, include groovy case aborning bears the choice of the computation of stress and its intensity and liner material.
1. tradition heat repairs a method
Traditional heat repairs a method is the part of termination of in relief Ji that repairs place correspondence in lateral liner damaged plug a spring, armor plate rises to stop the action of electrolyte and aluminous fluid, fill between armor plate and groovy carapace next the broken makings that increases certain amount piece, with muti_function the orgnaization making case of overhead traveling crane breaks mend solid, break fact hind to open a groove with pneumatic pick dig along groovy carapace in breakage, groove dimension basis the spot is real circumstance and calm, general groove dig arrives of artificial stretch one's legs on along, deepness makes an appointment with 20cm, width makes an appointment with 12cm, dig groove perhaps clears the phenomenon that a few ooze aluminium appear in groove process, live with fireproof mud and laterite mud paste commonly, clear again clean groove, bottom gush scatters coal tar, lateral charcoal piece puts park groove after the bottom of the hot make level that pound paste that controls with 100 ℃ inside. Install lateral charcoal of lateral of adjacent of bearing of the demand when charcoal piece piece between aperture as far as possible charcoal of small, lateral piece go up to edge board makes the same score the surface and electrobath chamfer together or reduce 1cm, the aperture between charcoal piece and lateral chamfer carapace uses alumina pink stuff, after afore-mentioned construction are finished, pull out armor plate, solder after press iron plate.
2. heats up those who repair a method to optimize improve
Repairing the purpose that the method improves is in electrobath lateral liner makes when repairing, be not affected electrobath moves and aluminous fluid quality. The technology decides after personnel research, the guide bar of in relief Ji that repairs place correspondence disconnects when repairing, make Ji of this this world not electric, the temperature that repairs place is reduced somewhat, magnetic field is abate, in aluminium of the ooze when repairing odds is less, after inserting armor plate, to aluminous fluid quality does not have an influence, but can achieve a tradition to heat up those who repair a method to repair the effect. The working procedure such as dig groove and traditional heat repair methodological working procedure to agree, but the thickener of bottom make level applied cold pound paste.
When repairing, be make sure construction is safe, disconnect after guide bar of in relief Ji, want wrap up kraft paper between guide bar and horizontal generatrix, guide bar and small box clamping apparatus, ensure guide bar is perpendicular at the same time do not contact with link up with. Because happen,prevent to break out effect of in relief Ji, cause a contact place electric conduction, local flow too, technology of mouth of link up with is energy-saving the happening of the accident such as clamping apparatus attaint.
During electrobath lateral liner is repaired, the theory that guide bar of in relief Ji can cut off the power analyses: Electrobath of some company 240kA is Shuang Yang Ji, current density is in relief Ji 0.733A/cm, when a group of this world Ji of other this world partook when Ji is not electric the electric current of this groups of in relief Ji, right now current density reachs in relief Ji greatly 0.782A/cm. According to document report: As in relief Ji charcoal piece produces craft standard rise, at present charcoal of in relief Ji piece current density can amount to 0.9A/cm above, reason disconnects furnace is being carried out to help heat repair after guide bar of a group of in relief Ji is feasible.
Aluminium electroanalysises the main operation in production is to change in relief Ji, below normal production situation every chamfer needs two days to change in relief Ji, change time of in relief Ji about 20min, after the chamfer on new in relief Ji because tremendous difference in temperature exists between in relief Ji and electrolyte, after electrolyte of immerge of new in relief Ji and palm of bottom of in relief Ji are contacted, because reason of difference in temperature is by in relief Ji,palm surface forms an electrolyte to coagulate housing, this one coagulates housing keeps apart liquid state electrolyte and in relief Ji completely, make thereby charcoal of in relief Ji piece lose electric action. The extension that registers groovy time as new in relief Ji, temperature lifts gradually, electrolyte of surface of palm of bottom of new in relief Ji coagulates housing is progressively and fused, electric current of in relief Ji divides cloth area to also be increased stage by stage, distributinging area of electric current of in relief Ji is achieved after 16h 70% , and the time that in relief Ji disconnects when repairing lateral liner does not exceed 3h commonly, this proves adequately to disconnect inside 3h a group of in relief Ji won't cause any effects to electrobath.
3. effect is analysed
The comparative analysis of content of the iron in heating up the electrobath aluminium fluid that repairs a method to improve around to repair sees a table as a result 1.
From the watch 1 can see, before heat repairs a method to improve, fall in electrolyte high temperature as a result of armor plate fused, content of the iron in aluminous fluid is apparently elevatory, content of the iron after individual in actual production electrobath is repaired is as high as 0.63% ; After heat repairs a method to improve, be opposite content of the iron in aluminous fluid does not have any influences, ensured the percent of pass of aluminous fluid.
The measurement that place of damaged of electrobath lateral liner repairs around furnace to help temperature and furnace side ply is comparative the analysis sees a table as a result 2.
From the watch 2 can see, after place of damaged of electrobath lateral liner is repaired, furnace helped ply increase 8cm left and right sides, furnace helped temperature reduce 100 ℃ above, did not produce furnace to help aglow phenomenon, electrobath runs stability, the chamber of a stove or furnace is progressively and neat. Moved smoothly already more than one year now, obtained remarkable economic benefits.
Above is the entire content about electrobath respect, if everybody has pertinent question or product requirement, the welcome seeks advice from flourish Cheng Naicai.
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