Tall aluminous qualitative adiabatic brick is the Al2O3 content that controls for main raw material with aluminous alumina do not be less than the adiabatic and refractory products of 48% . Its produce craft to use bubble method, also can use burn oneself out to add content way. Chinese standard (GB3995, 1983) presses tall aluminous adiabatic brick bulk density cent be LG-1.0, LG-O.9, LG-O.8, LG-0.7, LG-0.6, LG-O.5 and LG-0.47 are planted brand. Tall aluminous qualitative adiabatic firebrick can be used at build by laying bricks or stones to build thermal insulation and erode without division of content of melt of intense high temperature reach erode the place of action. When be being contacted with blaze directly, the temperature of watch surface contact of general tall aluminous qualitative adiabatic firebrick does not get prep above 1350 ℃ . Mo Laishi pledges adiabatic firebrick can contact blaze directly, have high temperature resistant, intensity is high, energy-saving effect is distinct wait for a characteristic. Apply to roller of the furnace that heat up solution, hot-blast stove, pottery and porcelain kiln of drawer of porcelain of path kiln, report and the liner of all sorts of resistor furnace. The standard of tall aluminous qualitative adiabatic firebrick is normative 1, task origin changes administrative committee GB according to relative standard appoint plan [the requirement of 2003]37 sign language, wait for responsible GB/T3995-1983 by fireproof material factory " tall aluminous qualitative adiabatic firebrick " relative standard (project number 20031430-T-605) edit the job, hind will " high temperature Mo Laishi is qualitative adiabatic and fireproof material " relative standard work out plans to merge into this project. Accordingly, by major introduction personnel is in charge of an organization, drafted GB/T3995-200X " firebrick of tall aluminium qualitative heat insolation " relative standard. 2, market research plans according to the job, we established a standard to draft, make edit group, timely established market research working group, the market demand of qualitative to tall aluminous qualitative, tall aluminous Molaishi adiabatic firebrick and technical development state of affairs undertook investigating. The main business of investigation has: 1. Some is petro-chemical company 2. Some is special steel joint-stock company 3. Some finite liability company 4. Company of some steely and finite liability 5. Some is steely (group) limited company. Pass run-of-mill contrast and analysis, obtained relatively unanimous opinion, think: Come nearly 20 years, market of tall aluminous qualitative adiabatic firebrick had produced the change of essential sex, open to the outside world to rise ceaselessly and increase to energy-saving consciousness of degree ceaselessly as our country, each enterprise pledges to tall aluminium the demand of adiabatic and fireproof material increases ceaselessly, the material with respect to the product pledges and Yan Yue is jumped over to tall purity. Low iron new breed develops; Of foreign product a large number of swarming into make domestic tall aluminium pledges adiabatic firebrick uses standard, brand to compare a disorder, not come especially firebrick of stone qualitative heat insolation, same product some technologies index is basic and similar, but, use level has however very big different; The brand is very confused also, of not only United States, also have Japan still Europe state level waits. In our country Molaishi pledges adiabatic firebrick from do not have some development to rise, and use temperature also heals to high temperature---The way that contacts blaze directly develops. Accordingly former GB/T3995 - 1983 " tall aluminous qualitative adiabatic firebrick " relative standard, cannot have gotten used to the case that at present the market develops, but, already used as a result of this standard old, design, production is already as hep as use branch, and apply relatively convenient, major index is not backward. Want to pledge the Molaishi that at present the market needs the standard of adiabatic firebrick is joined only among them, can make its more perfect. Because this wants to keep original already " tall aluminous qualitative adiabatic firebrick " of relative standard successional, want to have the level that gets used to Molaishi to pledge adiabatic firebrick develops way again, make our country tall aluminium, tall aluminous Molaishi pledges adiabatic firebrick health develops. Make market of expensive aluminous simple adiabatic and fireproof stuff orderly, normative market trades behavior, because this is about,a new relative standard that gets used to this market comes on stage. 3, work out principle this second " tall aluminous qualitative adiabatic firebrick " of the standard edit, it is former GB/T3995 - the complement of 1983 relative standard and outspread, " tall aluminous adiabatic firebrick " relative standard considers to be used for years, on relatively normative foundation, still use density taxonomy, regard tall aluminous qualitative heat insolation as the brand of firebrick with LG namely, no matter produce, design and use more convenient, practical. Tall aluminous Molaishi is in character former tall aluminium adds M to pledge in order to represent Molaishi on the foundation of LG of code name of qualitative adiabatic firebrick, namely LGM pledges on behalf of tall aluminous Molaishi. Tall aluminium pledges adiabatic firebrick considers from market demand, increased: LG140 - 1.2 brands, deleted: LG - 0.9, LG - 0.4 brands. Long LG140-1.2, LG140-1.0, LG140-0.8, LG135-0.7, LG135-0.6, LG125-0.5 was formed after deciding 6 brands. Firebrick of Mo Laishi qualitative heat insolation, do not have a standard formerly, produce an enterprise actually to use JIS commonly each standard and ASTM standard or use afore-mentioned standard reprint to make for industry standard, considering enterprise and design unit commonly used index and our country were used to a practice to do following addition on the brand. Namely: LGM180 - 1.5, LGM170 - 1.3, LGM150 - 1, LGM150 - 0.8, LGM140 - 0.7, LGM125 - 0.5 in all 6 brands, among them: LGM125 - 0.5 to be equivalent to Mo Laishi goods, basically be low ironwork, distinguish already at common tall aluminous qualitative adiabatic firebrick, the American standard JM that uses generally with the market again - 23 brands comparative, set this brand, basically concern with market demand. 4, the decides 4.1 manage change target affirmatory GB/T3995 of technical index - the requirement that the manage of 1983 changes index to basically can satisfy the market castigatory content is not much, qualitative to Molaishi adiabatic firebrick is on the base that already had manufacturing experience undertook revise and enlarge. Divide certainly to index by me the factory examines index and absorb partial enterprise to reach in domestic and internationally already standard foundation goes up, sample saves fireproof material quality to supervise by Liaoning examine the station undertook examining, from this, the current situation that combines production of domestic and international company defined the following target. The permissible variation in dimension of the affirmatory brick of the permissible variation in dimension of 4.2 firebrick and exterior has in two products classification apparently different, qualitative adiabatic firebrick considers tall aluminium to have already grind goods, shape once again production methods, with shaping accordingly the method gives priority to methodological deviation; Qualitative adiabatic firebrick uses Mo Laishi all the time grind the method that formulate, dimension deviation is relatively accordingly strict, detailed sees a table 3. Of 4.3 bricks sample with check and accept according to GB/T10325 - the requirement of 2001, dimension and exterior are taken outside examine ruinously sample, press a number to more or less undertake, certain reject allows to exist in every batches of amounts that selective examination. Manage changed the ruinous test gauge such as index to decide bulk density, normal temperature is able to bear or endure to intensity of pressure is spent and burn a line to change again 3 index are check and accept a project, gave out tolerance. 5, standard attribute concerns law, code by what take a picture to close, original standard is to recommend sexual level, classics attribute of the standard after editing is changeless, still be recommend sexual level. 6, standard standard this standard is to be on the foundation that Bao Gang project introduces, on the base that has analysing reaching many to domestic product survey to foreign product objective, undertake many plenitude to original standard, make standard content more hasten is perfect, the level rises further, can satisfy the requirement of domestic and international market. The product of this standard photograph correspondence can satisfy the requirement of domestic and international market, actually corporeal index already reached advanced level. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
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