【摘要】：本文為了解決我國(guó)大型搪玻璃設(shè)備在制造過程和使用過程中經(jīng)常出現(xiàn)的爆瓷現(xiàn)象,主要從改進(jìn)我國(guó)搪玻璃行業(yè)通用瓷釉入手,通過改變瓷釉配方和增加金屬氧化物來改善瓷釉性能、增加了瓷釉的抗腐蝕性能并提高了瓷釉的膨脹系數(shù),使得瓷層應(yīng)力狀態(tài)處于更穩(wěn)定狀態(tài)。并且通過了解瓷釉在燒成過程中的物理化學(xué)變化,改進(jìn)搪玻璃設(shè)備的燒成工藝,使得設(shè)備的穩(wěn)定性和局部爆瓷現(xiàn)象大幅降低來提高搪玻璃設(shè)備的整體穩(wěn)定性和耐腐蝕性能。在耐酸瓷釉的基礎(chǔ)上,通過添加中等量的氧化鋯(含量在6%-7%之間)來使得耐堿性能達(dá)到小于等于2g/(m2.d)達(dá)到國(guó)外的先進(jìn)水平,并且通過調(diào)整鋯、硅、鈦和助熔劑的比例,使得瓷釉的膨脹系數(shù)達(dá)到11×10-6/℃,更加接近鋼材的膨脹系數(shù),這樣就會(huì)減少兩種材質(zhì)之間的應(yīng)力差,使得瓷層穩(wěn)定性提高。通過高溫物像顯微鏡,測(cè)定該種瓷釉在燒成過程中的特定溫度點(diǎn),確定燒成工藝需要控制的溫度點(diǎn)。通過差熱分析來確定瓷釉的吸放熱的溫度段,來確定控溫溫度。最后,確定了在升溫段進(jìn)行兩段控溫,降溫段進(jìn)行一處控溫的燒成工藝。實(shí)驗(yàn)驗(yàn)證結(jié)果表明,通過該可控?zé)晒に?明顯改善了瓷釉的微觀結(jié)構(gòu)和力學(xué)性能,從而提高搪玻璃設(shè)備的整體性能。
[Abstract]:In order to solve the problem of porcelain explosion in the manufacture and use of large glass-lined equipment in China, this paper mainly starts with improving the general glaze of glass-lined industry in our country. By changing the formula of porcelain glaze and adding metal oxide to improve the performance of porcelain glaze, the corrosion resistance of porcelain glaze and the expansion coefficient of porcelain glaze are increased, which makes the stress state of porcelain layer more stable. Through understanding the physical and chemical changes of glaze during firing, improving the firing process of glass-lined equipment, the stability of the equipment and the phenomenon of local porcelain explosion are greatly reduced to improve the overall stability and corrosion resistance of glass-lined equipment. By adding a moderate amount of zirconia (content between 6% and 7%) to achieve alkaline resistance of less than 2g/ (m2.d) to the advanced level abroad, and by adjusting the ratio of zirconium, silicon, titanium and flux, The expansion coefficient of porcelain glaze is up to 11 脳 10 ~ (-6) / 鈩，

本文編號(hào)：2263431