Smelt is fireproof data products is to point to batch of will fireproof material to fuse in electric stove even liquid, pouring into prefab mould, undertake anneal again. With electric frit fireproof data products differs, the powder that uses the electric frit data that legal system of agglomeration of high-pressured high temperature becomes namely and grain recombine product. The marked characteristic of founding product is: (1) hole rate is low; (2) crystal is the union between brilliant; (3) fireproof sex is tall.
Which kind of is able to bear or endure glass erodes founding fireproof stuff is good for example, the oxidation way that fights glass to corrode zirconium corundum brick, glass pollutes the brick of 41 zirconium corundum, 26% founding chromium that contains oxidation chromium brick, regenerator uses small founding zirconia founding cross brick. In the meantime, founding technology and equipment standard reached ideal level. Previously impracticable, make tall 2000mm, precision very easily now 0.1mm, flawless of blemish without shrinkage cavity brick; Today's founding product can make the service life of kiln of float law glass is achieved 10 years above.
Does fireproof material have founding what founding is fireproof is material 6 kinds of: by chemical composition cent? ?Al2O3-SiO2) of cool three-bristle cudrania: Founding not comes stone brick; Aluminous silicon zirconium fastens (Al2O3-SO2-ZrO2) : Series of founding zirconium corundum, because ZrO2 content is different, have the variety of 15%.33%.36%.41% above, and founding zirconia brick; Alumina fastens (Al2O3) : Founding corundum brick, AB and R- alumina brick, chromic corundum brick, brick of chromic zirconium corundum; Magnesian chromium fastens (MgO-Cr2O3) : Founding magnesium chromic brick; (Brick of pointed spar of chromium of founding of 5) oxidation chromic Z2O3) ; Magnalium fastens (MOA2O) : Brick of founding pointed spar.
The manufacturing technology of fireproof material has founding what 1. Burden; 2. Fused; 3. Model; 4. Cast; 5. Anneal; 6. Finish machining.
(1) batch. The basis devises a recipe, fasten cent of farinaceous raw material metage, mix even, put into electric arc furnace to fuse next. 2 it is fused. Electric arc furnace fuses craft cent is reductive law and oxidation law: 1) reductive law is in inserting electrode fuse-element, heat with resistor fuse-element, the carbon on electrode is direct in infiltration fuse-element. The product quality that produces as a result of this method is low, already was washed out at present. 2, oxidation law is to use long arc to heat fuse-element, or after waiting for charging to fuse, blow oxygen to take off charcoal, blow oxygen the way is played on cent again. The bottom blows a law to reach connect inert gase protection to wait with hollow electrode. (3) model. Choose high temperature resistant material, because breed is different, be like black lead board, corundum quartz is arenaceous, arenaceous etc, design the sand mold with concede, good permeability with appropriate adhesive especially, more economy. (4) is cast. Use hot plate of bend double entry, fused frit fluid, pouring in ready model, because the processing technique of cast shrinkage cavity is different, pouring the method has 4 kinds, namely common law. Gradient method. Mix without shrinkage cavity law definitely without shrinkage cavity law. (5) anneal. Use the quantity of heat of cast itself, its embedded insulation material or exterior in heating annealing kiln, adjust and control the cooling rate of the product, eliminate its interior stress, make the product is not had inside crack and intensity. (6) finish machining. Use diamond appliance, cut or grinding cast, make its accord with the requirement that construct pit, seam build by laying bricks or stones control to be in 0.51mm, make sure kiln furnace life is long.
Goods of zirconium of aluminous silicon of founding of brick of founding zirconium corundum calls founding zirconium corundum the brick again, abbreviation founding AZS. What does brick of founding zirconium corundum have to use? Read the relevant content that manufacturer of products of zirconium of founding aluminous silicon arranges for everybody please. The founding AZS15 product that manufacturer of production of goods of zirconium of founding aluminous silicon produces, basically use at the establishment of form a complete set such as regenerator of vitreous frit kiln, its workmanship characteristic is to use stone of zirconium of material of useless old AS to mix soda ash of tall aluminous grog via burden calculation metage, make burden, throw electric arc heat next, reductive law is fused, mould temperature makes an appointment with 1750~1780 ℃ , pouring the casting mould that already put heat preservation case (water glass arenaceous template assembles) , general and pouring law, eliminate rising head, vermiculite pink expands on the lid, queen of heaven of 6-8 of natural heat preservation gives case, clean, examine, pack.
Brick of founding zirconium corundum: AZS33.AS36.AES41 product because raw material is same, chemical composition has ZO2 to differ only, so manufacturer uses electric arc heat, adjust 3 recipes to have production. (The applied: of 1) glass kiln? ┑ of big pool is vertebra of sprain of of of ＃ of ǔ of M of Suan of serve of Nai of badger of ⒁ of Hu of Tuo of of Ping of travel of cover of A Chinese-style unlined garment of sprain endowment scabbard to mire brandish of ┯ rotten to shirk wakes Shan of of fine a surname seeks class bluff sprain of of humorous of windowing Qiu of of of Ping of suddenly of travel ┎ class lives. (The other utility: of 2) founding AS33? A of date of?3 of big pool of a surname of take along sth to sb can cast all sorts of appearance, application is accordingly wide, use at vitreous kiln liner not only, also use at other industry. 1)Monofrax-R board brick (ply is 25 millimeter) chemical composition and AZS33 are identical, microstructure is only different, its characteristic is wearability good, use at iron and steel industry. 2)AZS33 can be made board, the appearance such as canal, made of baked clay, bend, use at coke chamfer, funnel, service life is 12 times longer than alloy cast iron, use at silicon of processing of pneumatic duct bend is arenaceous, 7 times longer than basaltic cast, this product has taller operation property than pottery and porcelain of balata line, agglomeration, can regard belt conveyer as the drawknife that go up, use at carrying the liner of pump housing helicoid of stock and back lid, replace titanium (T) hard alloy material uses several years. (The progress current situation of checker brick of 3) founding AZS is the product that makes by material of 2 report frit, the small negative charge that is used at much passageway regenerator is downstream port and microtherm passageway.
Bricky production technology notices founding zirconia thing founding zirconia the Gao Rong of 273 ℃ nods the ZrO2 melting point in the brick and chemical stability. The experiment makes clear, it is a stable brilliant photograph in the vitreous fluid of 1500 ℃ , do not produce new brilliant look, its fight soda-lime glass the 15~2 that eroding ability is standard AZS times, solve vitreous photograph especially oozy the bleb that cause and stone, the effect is distinct. Using it to make zirconium brick can be good fireproof stuff. Announced at first contain ZrO2:9Brick of 8% founding zirconium, but come out without production later, because ZrO2 is in 1170 ℃ brilliant reversible change brought 7% bulk change to bring about product craze. Because ZrO2 is high temperature resistant, good without oozy, corrosion resistance (corrode a face smooth, without degenerative layer) , blemish of glass of very few generation (the tumour that be like a knot, calculous, stripe, bleb) wait for superior performance. Through 10 old practice, already by fair think vitreous industry is fireproof the main component of material series.
Basically use at producing glass of screen of boracic silicate, lighter, lead or plumbic crystal, TV to wait for kiln of special glass frit. Those wear away serious place, if throat, shop installs brick, side wall,wait. , of glassy quantity rising is the gain with the biggest user. Next, the side wall that is used at to calcine and kiln be of use at to calcine high grade and careful pottery and porcelain, operation temperature is 2000 ℃ , prolonged the service life of kiln than in the past. SiO2 is founding zirconia all sorts of chemical composition of the brick. Conspicuous SiO2 is to form vitreous photograph. According to the experiment, the Al2O3 of the SiO2 of 3%-6% quality and 0.4%-1% quality is OK the bulk that changes in photograph of ZrO2 of the amortize in the glass between brilliant changes. In fact, is Na2O removing the action: of depressor in the reaction of ZKO2 and SO2? ?0 of widow of arenaceous Chu of of accept of ⑹ ? Bulk is reduced, structural craze, from 800 ℃ the left and right sides begins. The brick produces founding zirconia the technological process of product of zirconia of craft note founding and founding corundum brick are identical, but raw material and craft parameter are different. Electric arc furnace fuses temperature is more than 2600 ℃ , pouring temperature is more than 2400 ℃ , use black lead mould to cast. (: of 2) fused method? Good of handsome of Tuo of of acyl of border of haying of of wholesale of ⊙ of black of さ of trade of take along sth to sb can release partial oxygen from? fuses because of ZO2, often form a few second oxide) . To maintain the oxidation atmosphere of bath upside, had better diffuse oxygen, the knot tumor that reduces cast to have metallic outward appearance with utmost ground (black lead mould is provided have reductive or the undesirable and characteristic) of carbonization cast surface, prevent cast craze. With anneal of heat preservation box, alumina pink serves as insulation material. Granuality is less than 100 eye.
Founding of Mo Laishi brick compares founding in fireproof product much is brick of corundum of electric frit zirconium, what be everybody introduction today is another kind of product -- founding Mo Laishi brick, the friend that have fun at can understand. Founding not comes stone brick application is wide, with Yu Ye furnace of golden heating furnace, soaking, calcium carbide furnace gives wall of kiln of frit of makings mouth, glass to wait. 1958, design of our country proper motion produced founding Mo Laishi brick, introduced 8%ZrO2 later, incognito zirconium not comes stone brick, basically use at vitreous kiln furnace, later because its are not anti-corrosive, instead AZS, it is used at steely heating furnace and furnace of other chemical industry to wait only, to 20 centuries 90 time, halt production basically, but abroad is not such, japanese founding is black tall aluminous brick, mo Laishi brick applies Italian founding extensively still at the wear-resisting place of metallurgy furnace. In addition, according to the report, founding of foreign production ZMy-32V not comes stone brick, use Molaishi to have good impervious performance, use at the upside structure of the upside structure of a lot of kiln furnace and feeder. Come for years, it solved serious chemistry to erode a problem well. Hungarian Lyly weighs a new student to produce founding with industrial pure raw material Mo Laishi brick, foreign matter gross is less than 1% . Produce craft: ? Zhuo of all of principle columns of a hall of Chang of ⒎ of cut up with a hay cutter of Yan of cotton-padded mattress of は of of of of bead of experienced of ÷ of of Liang Tu of enzymatic Bi of take along sth to sb setting out fuses below the high temperature that closely question of of Xi of shrimp of an ancient type of banner hoisted on a featherdecked mast blacks?000-2500 of ÷ honest is spent only. prep above the frit fluid of 1900 ℃ enters water glass arenaceous board in assorted casting mould (casting mould combination is in heat preservation box) , the purify after systole is exported, embedded vermiculite pink, anneal 7~12 Queen of heaven gives case, undertake clean and be checkinged to cast next. Note. (Recipe of Mo Laishi brick is 1) abroad founding sawdust 5-10% ; (2) if content of titanium of the iron in raw material is higher, should notice to handle ferrosilicon issue in fused exercise, otherwise iron ball can affect quality into the brick, ferrosilicon penetrates hearth can cause incident of leakage furnace safety.
Fireproof material occurrence craze, fall off, easy how to wear away to do? Flourish Cheng Naicai is dug from germ, the analysis gives real reason, travel of destiny of birthday of furnace letting kiln is longer! Zhengzhou flourish fills kiln furnace fireproof data limited company is engaged in be able to bear or endure service of timber production, research and development is old, welcome communication of technology of broad new old friend to reach seek advice.
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