Water mouth brick is not pouring when water mouth brick shows line contact. Steel of guarantee against leakage. Water is arc above buccal brick, facilitating open, shut water mouth and the resistance that reduce molten steel flow, below paragraph it is straight line segment note in order to stabilize stream. The cubage of bucket flourishing steel, pouring method and steel are planted different, water mouth diameter is in 20 arrive inside 120 millimeter limits. Water mouth brick uses clay tall aluminium is qualitative, qualitative.
Enchase filling steel tub floor the fireproof material in the brick pledges molten steel pours out of a mouth. Not pouring when water mouth brick and brick of head of a place of strategic importance show line contact, steel of guarantee against leakage. Able to read aloud fluently of water mouth brick is dambered surface form, facilitating open, shut water mouth and the resistance that reduce molten steel flow, below paragraph it is straight line segment note in order to stabilize stream. When size of bucket flourishing steel is certain, the internal diameter size of water mouth brick is affected directly pouring speed (see pouring craft) . The basis is the cubage of Cheng Gang bucket, pouring what method and steel plant is different, water mouth diameter can be in 20 to 120mm limits inside. Water mouth brick can use clay qualitative, magnesian qualitative, magnesian chromium reachs qualitative, tall aluminium character zirconium is qualitative. The water mouth with the qualitative clay when pouring and boiling steel and tall manganese steel corrodes easily, reason uses brick of mouth of magnesian qualitative or high aluminous qualitative water. Mouth of magnesian qualitative water is able to bear or endure aggressivity is strong but thermal conductivity is strong also, pouring in tumour of easy generation knot.
Liner brick is divided inside bucket flourishing steel beyond, still use brick of mouth of brick of head of sleeve brick, a place of strategic importance, water to reach a brick to control steel to flow.
(1) the working requirement of brick of sleeve brick sleeve and mar basic and as identical as brick of line of Cheng Gang bucket. Often because produce frit damage, flake and rupture and mar. Actor of corrode of broken bits of place of broken bits line is heavy. The brick is seamed place erode heavier also. The processing that take off gas and Lian Zhu use the sleeve brick of bucket flourishing steel, be in in broken bits line or use tall aluminous brick or zirconium stone entirely simple fireproof stuff. Additional, also have the example that uses brick of double deck sleeve. Its are outer sleeve brick pledges with chromic magnesium or tall aluminium irrigates character makings. Return some to take club of air cooling a place of strategic importance, in order to reduce sleeve brick erode speed. Normally, increase sleeve brick ply in order to prolong service life.
(2) brick of head of a place of strategic importance irrigates brick of head of a place of strategic importance when building always is flow at the high temperature of steel fluid and steel erode under action. Flow to jam effectively and control steel, ask its are versed in tabulation face must cooperate cheek by jowl with water mouth brick, because be out of shape,must not produce gap with local corrode caustic. Do not produce broken end accident to assure club of a place of strategic importance, brick of head of a place of strategic importance cannot be mixed because of mechanical action cold hot alternant action and generation ruptures, also cannot mix because of the cementite action of brick of head of a place of strategic importance heat conduction rate is too high and make metallic strong core fragile change and fusing. Accordingly, brick of head of a place of strategic importance must high temperature resistant, be able to bear or endure erode, heat-resisting shake and have quite high strength
In bucket of common Cheng Gang, use brick of head of argillaceous simple stuff commonly. Have among them firing the brick does not bake bricks with what be united in wedlock with water glass, also have mix via oily dip again burn processing, carburet gently about 5% , the product containing carbon that intensity improves somewhat, still have black lead and carborundum are joined to be made in sticking earthy burden contain SiC and C to stick brick of head of earthy a place of strategic importance in the black lead of 15~45% .
Taller to tapping temperature a few special steel, wait for used bucket flourishing steel like tall manganese steel and stainless steel (or the Cheng Gang bucket that Lian Zhu uses) , stick brick of head of earthy a place of strategic importance to avoid mar, of brick of head of bring down a place of strategic importance discontinuous be out of shape and local corrode caustic, assure to be able to be controlled strictly and adjust accurately steel sheds speed, the state that avoids brick of head of black lead simple stuff believes cementite and easily fragile the phenomenon that change and ruptures, use brick of head of expensive aluminous simple stuff and zirconium stone brick of simple stuff head. Some still uses brick of head of alkalescent a place of strategic importance.
(3) brick of mouth of water of water mouth brick calls casting mouth the brick again. Insert in the base of bottom of bucket flourishing steel. It is current of the steel inside the bucket goes out surely the place of classics.
Place of water mouth brick receives erode action and brick of head of a place of strategic importance basic and identical, but erosive more serious.
Place of water mouth brick pledges with material with close of brick of head of a place of strategic importance. Must make sure it and brick of head of a place of strategic importance can cooperate cheek by jowl from beginning to end. For this, water mouth brick should be had below high temperature proper thermoplastic. Additional, water mouth brick should have tall bulk stability below high temperature.
In the technology that connect casting, to improve the quality of casting base, the inter is wrapped and installation has brick of immersion water mouth between crystallizer, when Lian Zhu is operated, cover immersion water mouth sailing upstream under buccal brick. 2 combustion that the action of brick of immersion water mouth can prevent molten steel, nitrogen is changed and molten steel splatters flow condition of; adjustment molten steel and infuse speed; prevent to protect broken bits in molten steel of be involved in of metalloid field trash, ; of main to promoting rise of the field trash in molten steel to rise effect is led to becoming a useful person even casting base and the quality of casting base has conclusive effect.
Brick of immersion water mouth installs the floor that the inter includes, insert crystallizer. Because connect casting,the structure of immersion water mouth and material pledge what plant even cast steel is craft, different and differ somewhat, club of integral a place of strategic importance and immersion water mouth accuse to shed a system, sail upstream mouth - slip water mouth - system of brick of immersion water mouth accuses to flow, club of a place of strategic importance - sail upstream mouth - change an orgnaization quickly - system of immersion water mouth accuses to flow reach laminose base Lian Zhu to use compressed formula the immersion water mouth of special structure. Rectify immersion of form of characters or letters among them water mouth length is longer, be in commonly 700mm above. This water mouth has two kinds of forms, one kind is inside outfit water mouth, namely by the intermediate installation outside wrapping introversion, water mouth is integral structure, sealing good; is another kind outside outfit water mouth, installation means is installed upcountry by intermediate bag bottom. Sail upstream mouth - slip water mouth - the offal that system of immersion water mouth accuses to shed medium immersion water mouth to be equivalent to slip water mouth mouth, immersion water mouth is not with the bag intermediate water mouth photograph joins, however the offal with slip water mouth mouth or next slide photograph join, sealed method and combination immersion water mouth is consistent.
Sail upstream mouth - slip water mouth - system of immersion water mouth accuses to shed brick of medium immersion water mouth shorter, be not worth 400mm commonly. When use, of immersion water mouth on the end leaving an opening of end and mouth of intermediate bag water joins, and the lower end inserts crystallizer molten steel in, the bowl department that immersion water mouth carries is spherical peace face two kinds,
Be filled up with fiber or daub and mouth of lower end of brick of the intermediate mouth that surround water are conterminous touch, use leverage interconnected system deserve to make again immersion water mouth and impaction of the mouth surrounding water intermediate, undertake from this sealed, undertake protective to molten steel.
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