CN109020480A - 一种宽温域烧结坭兴陶 - Google Patents
一种宽温域烧结坭兴陶 Download PDFInfo
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Abstract
本发明属于陶瓷烧制技术领域,具体是指一种宽温域烧结坭兴陶。包括原料选取、风化、混合研磨、压滤、真空练泥、陈腐、手工拉坯、修坯、雕刻、烧成、打磨、抛光等步骤。原料包括东泥、西泥、煅烧陶土、AL2O3、MnO2、Sm2O3、FeO、Fe2O3、ZrO2、ZrSiO4、CuO、ZnO、Li2O;本发明的宽温域烧结坭兴陶的烧结温度根据配方不同大约在1100‑1300℃之间。本发明的一种宽温域烧结坭兴陶,所生产的坭兴陶可以在比较宽的温度范围烧制,成品率高,表面光洁度高;拓宽了坭兴陶的烧结温度,可以进一步添加耐温着色材料,提高了坭兴陶的品质。
Description
技术领域
本发明属于陶瓷烧制技术领域,具体是指一种宽温域烧结坭兴陶。
技术背景
钦州坭兴陶与江苏宜兴紫砂陶、云南建水陶、四川荣昌陶名列中国四大名陶,饮誉中外。考证坭兴陶的历史,在清朝中叶时期,还没有确切的名称,至清朝咸丰年间,钦州陶器发展鼎盛,坭器得以广泛兴用,故得名“坭兴”。坭兴陶产品种类繁多、制作精良、历史悠久,既是一种高雅的工艺品又具有较高的实用价值,深受国内外收藏者的喜爱。
传统钦州坭兴陶的坯料由陶土材料制成,选用钦州本地特有的东泥和西泥为原料。所述东泥为横穿钦州市区的钦江以东地域的泥土,大都存于低洼地带,该泥土致密质软,为软质粘土,颜色为黄白色,含微量石英砂。西泥则为横穿钦州市区的钦江以西地域的泥土,贮存地以小山坡为主,该泥土为致密块状,含有少量K2O、Na2O、CaO、MgO、Fe2O3、TiO2、SiO2、MnO2,是一种含铁量较高的紫泥石,颜色为紫红色,表面层有少量铁质浸染,为硬质粘土,可塑性及结合性较东泥差。以东泥、西泥的按照一定的重量百分比混合;用坯料制成各种器型的坯体;然后对坯体进行修整,以达到设计要求;接着对坯体干燥,使坯体水分排出。坭兴陶在制作过程中既不添加任何颜料、不上釉,也不在坯体上用任何着色材料描绘色彩和图案,仅依靠偶尔出现的窑变使坭兴陶呈现无法预测和控制的色彩,及使用雕刻工艺来装饰坯体。所述雕刻工艺即用锋利的钢刀在坯体上雕刻出文字和图案,一般采用平雕工艺和浮雕工艺。
坯体装窑烧制是陶瓷烧结的关键步骤;为了达到较高的烧成率及提高窑变率,普通的坭兴陶坯体烧制的最高温度控制在1100~1200℃,烧制时间为10小时,经烧制后出窑即为坭兴陶器。使用不同坯料制备的陶器坯体,所能承受的烧制温度是有差异的。
坭兴陶坯体是以东泥和西泥两种陶土材料制成,不耐高温,烧制温度超过1200℃,坯体表面会出现裂纹或破损,严重的甚至出现坯体变形和坍塌。所以,在装饰坭兴陶坯体时,不能使用必须经高温烧制才能显色的着色材料(如青花料)描绘纹饰、图案,只依靠烧制时偶尔出现的窑变,使坭兴陶出现不同色彩。
发明内容
本发明针对以上存在问题,提供一种可以在较宽温度范围内烧制坭兴陶制作工艺,具体方案如下:
一种宽温域烧结坭兴陶,包括以下步骤:原料选取、风化、混合研磨、压滤、真空练泥、陈腐、手工拉坯、修坯、雕刻、烧成、打磨、抛光;所述的原料包括东泥50~75份、西泥25~50份、煅烧陶土10~20份、AL2O3 1~5份、MnO2 0.5~1份、Sm2O3 0.2~0.5份、FeO 0.1~0.3份、Fe2O3 0.2~0.4份、ZrO2 0.2~0.3份、ZrSiO4 0.3~0.5份、CuO 0.2~0.6份、ZnO 1~2份、Li2O 0.1~1.5份。
进一步方案,所述的高温烧结泥料配方中AL2O3用量不小于4份。
进一步方案,所述的低温烧结泥料配方中Li2O用量不小于1份。
进一步方案,所述的煅烧陶土粒径在2μm以下。
进一步方案,所述的陈腐是指在将所有添加剂混合均与后,在避光、相对空气湿度大于等于80%、温度18-22℃条件下静置,时间不少于15天。
进一步方案,所述的真空炼泥的真空度小于等于-75KPa。
进一步方案,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时60~100℃,升到500~600℃以后,升温速度为每小时120~150℃,直至升到1100-1300℃,并在该温度下,持续烧制16~24小时。
有益效果:
1.本发明的一种宽温域烧结坭兴陶,所生产的坭兴陶耐高温性较好,可以在比较宽的温度范围烧制,成品率高。
2.本发明的一种宽温域烧结坭兴陶,所生产的坭兴陶色彩均匀,表面光洁度高。
3.本发明的一种宽温域烧结坭兴陶,所生产的坭兴陶透过耐热材料的添加,提高了坭兴陶的烧结温度,可以进一步添加耐温着色材料,提高了坭兴陶的品质。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面对本发明的具体实施方式做详细说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施,本领域技术人员可以在不违背本发明内涵的情况下做类似改进,因此本发明不受下面公开的具体实施方式的限制。
一种宽温域烧结坭兴陶,包括以下步骤:原料选取、风化、混合研磨、压滤、真空练泥、陈腐、手工拉坯、修坯、雕刻、烧成、打磨、抛光;所述的原料包括东泥50~75份、西泥25~50份、煅烧陶土10~20份、AL2O3 1~5份、MnO2 0.5~1份、Sm2O3 0.2~0.5份、FeO 0.1~0.3份、Fe2O3 0.2~0.4份、ZrO2 0.2~0.3份、ZrSiO4 0.3~0.5份、CuO 0.2~0.6份、ZnO 1~2份、Li2O 0.1~1.5份。
进一步方案,所述的高温烧结泥料配方中AL2O3用量不小于4份。
进一步方案,所述的低温烧结泥料配方中Li2O用量不小于1份。
进一步方案,所述的煅烧陶土粒径在2μm以下。
进一步方案,所述的陈腐是指在将所有添加剂混合均与后,在避光、相对空气湿度大于等于80%、温度18-22℃条件下静置,时间不少于15天。
进一步方案,所述的真空炼泥的真空度小于等于-75KPa。
进一步方案,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时60~100℃,升到500~600℃以后,升温速度为每小时120~150℃,直至升到1100-1300℃,并在该温度下,持续烧制16~24小时。
配方中的Li2O在烧结过程中作为助熔剂,扩大烧成范围,形成少量液相,促进烧结,起到降低坭兴陶烧结温度的作用。
配方中的AL2O3作为添加剂,增强了坭兴陶坯体的耐高温性,提高了坭兴陶的烧结温度,同时其他的金属氧化物可以起到稳定剂的作用,提高了坭兴陶窑变成品率。
实施例1
一种宽温域烧结坭兴陶,所述的原料包括东泥50份、西泥50份、煅烧陶土10份、AL2O3 1份、MnO2 0.5份、Sm2O3 0.2份、FeO 0.1份、Fe2O3 0.2份、ZrO2 0.2份、ZrSiO4 0.3份、CuO 0.2份、ZnO 1份、Li2O 1.5份。
进一步方案,所述的真空炼泥的真空度-75KPa。
进一步方案,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时60℃,升到500℃以后,升温速度为每小时120℃,直至升到1100℃,并在该温度下,持续烧制16小时。
实施例2
一种宽温域烧结坭兴陶,所述的原料包括东泥60份、西泥40份、煅烧陶土20份、AL2O3 3份、MnO2 0.8份、Sm2O3 0.3份、FeO 0.2份、Fe2O3 0.3份、ZrO2 0.25份、ZrSiO4 0.4份、CuO 0.4份、ZnO 1.5份、Li2O 0.8份。
进一步方案,所述的真空炼泥的真空度-80KPa。
进一步方案,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时100℃,升到600℃以后,升温速度为每小时150℃,直至升到1200℃,并在该温度下,持续烧制24小时。
实施例3
一种宽温域烧结坭兴陶,所述的原料包括东泥75份、西泥25份、煅烧陶土15份、AL2O3 5份、MnO2 1份、Sm2O3 0.5份、FeO 0.3份、Fe2O3 0.4份、ZrO2 0.3份、ZrSiO4 0.5份、CuO0.6份、ZnO 2份、Li2O 0.1份。
进一步方案,所述的真空炼泥的真空度-80KPa。
进一步方案,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时80℃,升到550℃以后,升温速度为每小时135℃,直至升到1300℃,并在该温度下,持续烧制20小时。
虽然在上文中已经参考了一些实施例对本发明进行描述,然而在不脱离本发明的范围的情况下,可以对其进行各种改进并且可以用等效无替换其中的技术点,尤其是,只要不存在技术冲突,本发明所披露的各种实施例中的各项特征均可通过任一方式结合起来使用,在本发明中未对这些组合的情况进行穷举的描述仅仅是处于省略篇幅和节约资源的考虑。因此,本发明并不局限于文中公开的特定实施例,而且包括落入权利要求。
Claims (7)
1.一种宽温域烧结坭兴陶,包括以下步骤:原料选取、风化、混合研磨、压滤、真空练泥、陈腐、手工拉坯、修坯、雕刻、烧成、打磨、抛光;其特征在于,所述的原料包括东泥50~75份、西泥25~50份、煅烧陶土10~20份、AL2O3 1~5份、MnO2 0.5~1份、Sm2O3 0.2~0.5份、FeO0.1~0.3份、Fe2O3 0.2~0.4份、ZrO2 0.2~0.3份、ZrSiO4 0.3~0.5份、CuO 0.2~0.6份、ZnO 1~2份、Li2O 0.1~1.5份。
2.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的高温烧结泥料配方中AL2O3用量不小于4份。
3.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的低温烧结泥料配方中Li2O用量不小于1份。
4.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的煅烧陶土粒径在2μm以下。
5.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的陈腐是指在将所有添加剂混合均与后,在避光、相对空气湿度大于等于80%、温度18-22℃条件下静置,时间不少于15天。
6.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的真空炼泥的真空度小于等于-75KPa。
7.根据权利要求1所述的一种宽温域烧结坭兴陶,其特征在于,所述的烧成是指把干燥的坯体放入到窑炉中,将温度逐渐升高,升温速度为每小时60~100℃,升到500~600℃以后,升温速度为每小时120~150℃,直至升到1100-1300℃,并在该温度下,持续烧制16~24小时。
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