CN106348732A - 一种紫砂器具还原烧成方法 - Google Patents

一种紫砂器具还原烧成方法 Download PDF

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CN106348732A
CN106348732A CN201610691457.0A CN201610691457A CN106348732A CN 106348732 A CN106348732 A CN 106348732A CN 201610691457 A CN201610691457 A CN 201610691457A CN 106348732 A CN106348732 A CN 106348732A
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reduction kiln
utensils
temperature
firing method
reductive firing
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范泽锋
汤先武
徐飞
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Yixing Love Art Ceramics Co Ltd
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Yixing Love Art Ceramics Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/32Burning methods
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658Atmosphere during thermal treatment
    • C04B2235/6581Total pressure below 1 atmosphere, e.g. vacuum
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661Multi-step sintering
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661Multi-step sintering
    • C04B2235/662Annealing after sintering
    • C04B2235/664Reductive annealing

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
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  • Organic Chemistry (AREA)
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Abstract

一种紫砂器具还原烧成方法,包括以下步骤:将经过一次烧成的紫砂器具放入还原窑中进行还原烧成,相邻紫砂器具保持间距5cm~8cm,紫砂器具放置于托架上,托架为多孔耐火蜂窝片,将还原窑体密封盖实,将温度升至1190℃,关闭电源,使还原窑慢慢冷却降温,降到980℃~1020℃时,保持温度,并往还原窑内投入木柴,投柴量为还原窑体内每立方米空间投二十斤~三十斤,最后关闭电源,使还原窑自动降温即可。可大幅度提高气氛与紫砂泥的浸入率,提高颜色纯度,并提高紫砂吸水率,表面光滑。

Description

一种紫砂器具还原烧成方法
技术领域
本发明涉及紫砂器具烧结工艺,尤其涉及紫砂器具烧结氧化还原方法。
背景技术
目前,在紫砂行业领域,大致有两种烧成方法:氧化烧和还原烧,传统还原烧成,是在升温过程中添加还原介质,造成还原气氛,形成窑变效果,但是这种烧成方法,窑变效果往往因为与胎土中的金属物与介质产生化学反应,往往烧成效果是不可控的。
现有的紫砂器具为了使颜色更好丰富多彩,均需进行还原烧结,但现有技术的还原气氛均采用煤气或通入二氧化碳,温度和气氛含量难以控制,其还原效果较差,气氛与紫砂浸入率较低,导致紫砂器具颜色不纯正,并且表面较为粗燥,有待改进。
发明内容
本发明针对现有技术的不足,提供了一种可大幅度提高气氛与紫砂泥的浸入率,提高颜色纯度,并提高紫砂吸水率,表面光滑的紫砂器具还原烧成方法。
为实现本发明目的,提供了以下技术方案:一种紫砂器具还原烧成方法,其特征在于包括以下步骤:将经过一次烧成的紫砂器具放入还原窑中进行还原烧成,相邻紫砂器具保持间距5cm~8cm,紫砂器具放置于托架上,托架为多孔耐火蜂窝片,将还原窑体密封盖实,将温度升至1190℃,关闭电源,使还原窑慢慢冷却降温,降到980℃~1020℃时,保持温度,并往还原窑内投入木柴,投柴量为还原窑体内每立方米空间投二十斤~三十斤,最后关闭电源,使还原窑自动降温即可。
作为优选,降到980℃~1020℃时,保持温度的时间为1.5~2小时。
作为优选,木柴为油松枝。
作为优选,还原窑体密封盖实后抽真空,压力为一个大气压。
本发明有益效果:本发明的还原烧制能使紫砂中的三氧化二铁通过气氛还原成四氧化三铁,使原来的红色、紫色、褐色、米黄色分别烧成黑色、天青色、深绿色和青灰色,丰富了紫砂原来的颜色,通过不同量的气氛和温度可以把一个泥烧制成多个颜色,甚至十多个颜色,又有润滑抛光作用。所以这样的紫砂产品特别光滑,又因产品在烧结的情况下(吸水率为1%左右),降温至1000℃,保温加柴1.5-2小时,使产品能微小的膨胀,使吸水率升至2%左右。这样又使紫砂壶泡养更佳,茶味更好。并且由于是在降温过程中通入还原介质,极大的降低了还原介质与烧成坯体中金属物的化学反应,达到一种稳定和可控的烧成效果。
具体实施方式
实施例1:一种紫砂器具还原烧成方法,包括以下步骤:将经过一次烧成的紫砂器具放入还原窑中进行还原烧成,相邻紫砂器具保持间距5cm~8cm,紫砂器具放置于托架上,托架为多孔耐火蜂窝片,将还原窑体密封盖实,并进行抽真空,真空度为一个大气压,将温度升至1190℃,关闭电源,使还原窑慢慢冷却降温,降到1020℃时,保持温度1.5~2小时,抽真空装置关系,往还原窑内投入油松枝,油松枝切割成10~15cm的小段,投柴量为还原窑体内每立方米空间投二十斤~三十斤,将油松枝放置于托架下方的空间内,密封还原窑,使油松枝进行不充分燃烧,产生大量黑烟的天然气氛,最后关闭电源,使还原窑自动降温即可。油松枝投加时间为30~60分钟。

Claims (4)

1.一种紫砂器具还原烧成方法,其特征在于包括以下步骤:将经过一次烧成的紫砂器具放入还原窑中进行还原烧成,相邻紫砂器具保持间距5cm~8cm,紫砂器具放置于托架上,托架为多孔耐火蜂窝片,将还原窑体密封盖实,将温度升至1190℃,关闭电源,使还原窑慢慢冷却降温,降到980℃~1020℃时,保持温度,并往还原窑内投入木柴,投柴量为还原窑体内每立方米空间投二十斤~三十斤,最后关闭电源,使还原窑自动降温即可。
2.根据权利要求1所述的一种紫砂器具还原烧成方法,其特征在于降到980℃~1020℃时,保持温度的时间为1.5~2小时。
3.根据权利要求1所述的一种紫砂器具还原烧成方法,其特征在于木柴为油松枝。
4.根据权利要求1所述的一种紫砂器具还原烧成方法,其特征在于还原窑体密封盖实后抽真空,压力为一个大气压。
CN201610691457.0A 2016-08-21 2016-08-21 一种紫砂器具还原烧成方法 Pending CN106348732A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336558A (zh) * 2018-10-23 2019-02-15 沈泓志 紫陶紫金烧制工艺
CN111875354A (zh) * 2020-08-07 2020-11-03 丁善华 一种紫砂器具原矿重还原的烧制方法
CN112745100A (zh) * 2020-12-31 2021-05-04 江西陶瓷工艺美术职业技术学院 一种紫砂可塑性坯料及其成型方法、紫砂陶器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391018A (zh) * 2011-08-10 2012-03-28 刘冬青 汝瓷仿古亚光薄釉的制作方法
CN105601255A (zh) * 2016-03-09 2016-05-25 云南浪鬼建水陶文化有限公司 一种建水紫陶的改进烧制工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391018A (zh) * 2011-08-10 2012-03-28 刘冬青 汝瓷仿古亚光薄釉的制作方法
CN105601255A (zh) * 2016-03-09 2016-05-25 云南浪鬼建水陶文化有限公司 一种建水紫陶的改进烧制工艺

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336558A (zh) * 2018-10-23 2019-02-15 沈泓志 紫陶紫金烧制工艺
CN109336558B (zh) * 2018-10-23 2021-06-25 沈泓志 紫陶紫金烧制工艺
CN111875354A (zh) * 2020-08-07 2020-11-03 丁善华 一种紫砂器具原矿重还原的烧制方法
CN112745100A (zh) * 2020-12-31 2021-05-04 江西陶瓷工艺美术职业技术学院 一种紫砂可塑性坯料及其成型方法、紫砂陶器

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Application publication date: 20170125