本文選題：AZS33耐火材料磚 + 溫度��； 參考：《武漢科技大學(xué)》2015年碩士論文

【摘要】：熔鑄AZS33耐火材料在玻璃工業(yè)中應(yīng)用較為廣泛。采用計(jì)算機(jī)對(duì)其充型凝固過程進(jìn)行仿真分析，可以直觀的觀測(cè)到其充型凝固過程，定量的分析充型、傳熱凝固規(guī)律及各種因素對(duì)凝固過程的影響，預(yù)測(cè)并減少AZS33磚缺陷的產(chǎn)生。 本文針對(duì)AZS33耐火材料磚的鑄造特點(diǎn)，建立了熔鑄耐火材料流動(dòng)、傳熱及凝固過程的數(shù)學(xué)模型，以尺寸為721mm×506mm×850mm的耐火材料磚為研究對(duì)象，采用ProCast軟件模擬計(jì)算了不同時(shí)刻熔鑄材料在鑄型型腔瞬時(shí)充型流動(dòng)的過程、不同時(shí)刻的溫度場(chǎng)分布、凝固進(jìn)程。預(yù)測(cè)了鑄件是分層凝固，由表面向鑄件中心逐漸冷卻。并模擬了不同澆冒系統(tǒng)、不同溫度對(duì)鑄件縮松縮孔缺陷的影響，選取體積為840mm×640mm×850mm的冒口可將縮松縮孔缺陷轉(zhuǎn)移到澆冒系統(tǒng)中，結(jié)合實(shí)際生產(chǎn)，考慮環(huán)境和成本因素，選擇較為合適的澆注溫度為1810oC。 耦合溫度場(chǎng)分析，采用循序耦合場(chǎng)直接耦合分析的方法，結(jié)合熔鑄材料凝固過程中的相變效應(yīng)，構(gòu)造了熱-相變-力學(xué)耦合情況下的力學(xué)本構(gòu)關(guān)系，建立了相應(yīng)的應(yīng)力計(jì)算模型。模擬計(jì)算了熔鑄過程的應(yīng)力場(chǎng)分布，探究了不同鑄型材料、不同保溫層材料對(duì)于應(yīng)力場(chǎng)的影響，預(yù)測(cè)了熱應(yīng)力的變化過程是先增大，增大到一個(gè)峰值后隨著傳熱趨于穩(wěn)定，，應(yīng)力值會(huì)不斷減小并趨于穩(wěn)定，且應(yīng)力主要集中在棱邊中點(diǎn)附近。綜合考慮應(yīng)力峰值和峰值持續(xù)時(shí)間，選擇硅砂作為保溫層材料，硅藻土作為保溫層材料。
[Abstract]:Melt-cast AZS33 refractories are widely used in glass industry. By computer simulation and analysis of the mold filling and solidification process, the mold filling and solidification process can be observed intuitively. The effects of mold filling, heat transfer and solidification law and various factors on the solidification process can be quantitatively analyzed, and the defects of AZS33 brick can be predicted and reduced. According to the casting characteristics of AZS33 refractory brick, a mathematical model of flow, heat transfer and solidification of molten refractory brick is established in this paper. The research object is 721mm 脳 506mm 脳 850mm refractory brick. The transient filling process, temperature field distribution and solidification process of the casting materials at different times in the mold cavity were simulated by ProCast software. It is predicted that the casting is stratified solidified and cooled gradually from the surface to the center of the casting. The effects of different pouring systems and different temperatures on the shrinkage defects of castings are simulated. The risers with volume 840mm 脳 640mm 脳 850mm can transfer the shrinkage defects to the casting system. Combined with the actual production, the environmental and cost factors are considered. The suitable pouring temperature is 1810 OC. Coupling temperature field analysis, the direct coupling analysis method of sequential coupling field and the phase transformation effect during solidification of molten casting materials are used to construct the mechanical constitutive relation under the coupling of thermo-phase-transformation and mechanics. The corresponding stress calculation model is established. The stress field distribution in the melting and casting process is simulated and calculated. The influence of different casting materials and different insulating layer materials on the stress field is investigated. It is predicted that the variation process of the thermal stress increases first, increases to a peak value, and then tends to stabilize with the heat transfer. The stress value decreases and tends to be stable, and the stress is mainly concentrated near the midpoint of the edge. Considering the peak stress and the duration of peak stress, silica sand and diatomite are selected as insulating layer material.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ175.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 成潔,李宏光,王廷籍;熔鑄Al_2O_3系耐火材料退火過程數(shù)學(xué)模型[J];北京化工大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年01期

2 包卓吾,黃淵麟,涂淑進(jìn),戴玉龍,劉津墉,孫梅華;電熔鋯剛玉磚(ZrO_233%)開裂的若干因素探討[J];玻璃與搪瓷;1980年04期

3 胡紅軍;楊明波;羅靜;王春歡;陳康;;ProCAST軟件在鑄造凝固模擬中的應(yīng)用[J];材料科學(xué)與工藝;2006年03期

4 王杰曾,金宗哲;耐火材料力學(xué)—熱物理性能的評(píng)述[J];硅酸鹽通報(bào);1996年02期

5 王志剛;李楠;孔建益;李友榮;;耐火材料熱應(yīng)力分析中的材料本構(gòu)模型研究[J];工業(yè)爐;2008年04期

6 李永剛;溫度-應(yīng)力-時(shí)間作用下耐火材料的物理性能[J];耐火材料;1999年04期

7 張德臣,孫艷平;利用有限元法分析耐火磚的熱應(yīng)力和變形[J];耐火材料;2000年05期

8 侯延輝;成志強(qiáng);馮威潮;柳葆生;;Procast在鑄造縮孔預(yù)測(cè)及其優(yōu)化中的應(yīng)用[J];中國(guó)水運(yùn)(學(xué)術(shù)版);2007年03期

9 張強(qiáng);楊永;李喜樂;;基于新的描述湍流耗散方程的k-ζ兩方程湍流模型的數(shù)值算法研究[J];西北工業(yè)大學(xué)學(xué)報(bào);2009年04期

10 王興東;李剛;李江;李遠(yuǎn)兵;;耐火材料熱應(yīng)力計(jì)算的現(xiàn)狀與發(fā)展[J];江蘇冶金;2006年03期

本文編號(hào)：1842429