The pace enters lining of bridge type heating furnace is to bear the main construction part of thermic load, its construction quality achieves a design to heat up industry index to having decisive effect to heating furnace. Complication as what the application of new-style and fireproof material reachs furnace design, construction difficulty is greater and greater, to lining construction quality control posed bigger challenge. Current, a lot of large situations of domestic are used into bridge type heating furnace fireproof but plastic as the fireproof layer inside heating furnace.
Fireproof but plastic it is by the fireproof aggregate of certain grain grading, pink makings, bond is mixed additive, via making up, add water (or the liquid that contains bond) mix refine, extruding to become lump or stock of slimy conglomerate form, packing keep in storage good plasticity still is had after proper time, can use a kind of indeterminate form that pounds dozen of method construction fireproof material, furnace of all sorts of heating furnace that basically are used in iron and steel industry, soaking, annealing furnace, sintering furnace and electric stove carry the line system that wait on the head. But plastic have high temperature strength tall, heatproof shake sex is good, thermal conductance is small, fight flake the gender is mixed the aggressivity that fight broken bits is strong, service life is long, the advantage such as managing the sources of energy, special agree with the brick of roof, burner place that be damaged easily and shapes not easily.
1, fireproof but plastic construction characteristic is fireproof but plastic belong to gas material of hard or hot rigid. But plastic medium water content is less, expose shorter in air time to be met sclerotic, because this applies man-hour,combinative scale wants successive construction. But plastic piece with piece between must the outside force talent with particular have the aid of is united in wedlock together, need of this kind of outside force is perpendicular at construction face. But plastic use when roof position, because roof uses condole to hang a structure, hang fireproof material condole through anchorage solid brick make a whole, the requirement must make but plastic as close together as union of anchorage solid brick. Condole hangs anchorage solid brick on roof steel structure, must make in construction process brick of every anchorage solid gets prestressing force, such ability make sure roof accepts force scale even, do not collapse fall. But plastic in the course that gets outside force couple, inevitable meeting to all around outspread, the ply of unwarrantable roof, this asks in the fluctuation of roof 2 faces want to install pattern plate, make but inside the limits that plastic ply control is asking. But plastic can contractive below high temperature, the method that does not need to use a convention so stays set expand seam. But the break that in disorder appears after contracting to prevent material, can use in construction process cut seamed method, control is dry when warming up expand and contract. After the course is machined but plastic surface is slick, go against union, the attention should make joint surface rough as far as possible. To assure to breathe freely, after construction is finished, outside face also wants coarse, cannot daub eyewinker or machine with float, the drill rod that uses 4 ～ 6mm at the same time is plunged into on air-vent with benefit at eduction but the moisture of plastic deep.
2, construction method is fireproof but plastic and OK in the place such as heating furnace boiler setting, roof applying, still have its easily the characteristic such as construction, can use in a few pouring the special place of the very difficult construction such as makings. But plastic construction demand is even and close-grained, union is sufficient, successive construction. With roof but plastic construction is exemple, summarize but plastic construction method. Roof but plastic in disturbing dozen of process, the emplacement of anchorage solid brick quality is right can wear since the service life of plastic roof very big impact, when construction, first will but plastic pound hit to put line place to make an appointment with 20mm(to forecast a quantity to put a line to hang the) on Xiaoliang in condole more than, put corresponding wooden model brick to infiltrate but plastic, after forming roughness, set anchorage solid brick to secure again. Anchorage solid brick and condole hang Xiaoliang's clearance to be tightened with chock wedge, just can spread put but plastic undertake pounding hitting.
Condole hangs anchorage solid brick to put the position correct, the brick is put perpendicular. Pound when hitting, originally from anchor first two side use the brick pound hammer to fight each other, hit two condole to hang anchorage solid brick next between but plastic, after be being hit twice repeatedly so, again laid lower level continues construction. Need roof but after plastic construction is over, after drying-out ends, take chock entirely.
3, but plastic construction note (1) when construction is intermittent, the central line that juncture takes in brick of same platoon anchorage solid is in and will pound dozen of face to enclothe with plastic cloth, continue to pound when hitting, already will pound receive solidly raft face raze 10~20mm, the surface blows wool; Pound dozen of range dry too fast when, sparge shape water is wet. (2) but plastic for natural conserve, before drying-out as soon as possible form removal makes nature of body of build by laying bricks or stones dry. End panel of anchorage solid brick can be beaten gently with wooden hammer before nap of plastic form removal all round but plastic, those who make is close together and occlusive, nap uses unified special tool. (3) every paragraphs of roof adds up to the door to be in pattern plate, must be in but plastic construction ending 24 H is rear and detachable model. (4) expand seam with special cut seam a knife to be cut, cut of every other 1500mm together, deepness is 60mm. (5) the fireproof data that top of Duan Lu of tall, low temperature uses is different, when construction first will high low temperature paragraph boundary picture is on Xiaoliang, change with this boundary material. (6) before drying-out mend by replacing a damaged part can have when plastic liner break is more than 12 Mm, interstitial place should in scrape big outside small wedge mouth, the surface sprays mist shape water is wet, with but plastic fill solid. Break is when 3 ～ 12mm, with fireproof fiber ram. (7) roof heat insolation is pouring the construction of makings. Roof but after plastic construction ends, can undertake pouring makings construction. But ideal is to be after day of furnace carry revolution is cooling reentry travel construction. The construction before drying-out must reduce regular water consumption, agitate is a few drier, avoid moisture to run to anchorage solid brick all around arrive with ooze inside furnace.
Get Price
WhatsApp