制一个建水紫陶茶罐(三)烧制

制一个建水紫陶茶罐(三)烧制插图

待烧的陶坯,已晾干到一定的硬度。

The ceramic body to be fired has been dried to a certain hardness.

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盖子刷一层氧化铝,避免高温气氛下盖子和罐口粘在一起。

Brush a layer of alumina on the cover to avoid sticking the lid and the tank mouth together under high temperature.

装窑,高矮、大小合理搭配,尽量多装。

Loading kiln, height, size reasonable collocation, as much as possible.

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高度触及窑顶,最大程度利用有限的窑内空间。

The height touches the top of the kiln to maximize the utilization of the limited space in the kiln.

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点火,气窑内部有四个火焰点,开始点燃对角的两个,待温度缓慢上升。600摄氏度以前是析出水分的阶段,也是最容易出问题的阶段,温度不能上升过快。

Ignition, there are four flame points inside the gas kiln, start to ignite two diagonal points, and wait for the temperature to rise slowly. Before 600 ℃, it is the stage of precipitation of water, which is also the most prone to problems. The temperature can not rise too fast.

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记录时间和对应的温度变化,除水阶段一般1个小时温度上升80摄氏度左右,这个过程还会不停地做微小的调整。

Record the time and the corresponding temperature change, the water removal stage is generally 1 hour, the temperature rises about 80 degrees Celsius, this process will continue to make small adjustments.

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窑门上有几个观察孔可以观察窑内不同位置的火焰情况。

There are several observation holes on the kiln door to observe the flame situation at different positions in the kiln.

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温度较高时,火焰会从观察孔中喷出。这种情况在缺氧的还原气氛下更为明显,火焰从观察孔喷出吸取外面的氧气。

When the temperature is high, the flame will eject from the observation hole. This situation is more obvious in the anoxic reducing atmosphere, and the flame ejects from the observation hole to absorb the outside oxygen.

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深夜,烧制温度已达1099摄氏度,历时11小时左右。

Late at night, the firing temperature has reached 1099 degrees Celsius, lasting about 11 hours.

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开窑瞬间。

The moment of kiln opening.

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对比入窑瞬间。

Compared with the moment of entering the kiln.

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烧制出来茶罐表面有厚厚的火皮,主要成分是反应产生的铁,火皮会在打磨时被除掉。

There is a thick fire skin on the surface of the tea pot. The main component is iron produced by reaction. The fire skin will be removed when grinding.

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