紫陶复烧第二次和第一次烧有什么不用?

问题一:紫陶复烧的温度有第一次高吗?

Question 1: is the firing temperature higher for the first time?

答:紫陶的烧结温度在1100℃到1180℃,大多数作品就是在这个温度下烧制而成。

A: the sintering temperature of purple pottery ranges from 1100 ℃ to 1180 ℃, and most works are made at this temperature.

对于复烧的作品,经过打磨后再入窑,第二次的最适宜温度在1180℃,实际操作中并不固定,可以上下浮动10℃左右。

The best temperature for the second time is 1180 ℃, which is not fixed in actual operation, and can float up and down about 10 ℃.

可见,复烧的温度不仅有第一次那么高,而且偏烧结的上限温度;区别在于,复烧的时间远远少于第一次烧结。

It can be seen that the second sintering temperature is not only as high as that of the first sintering, but also partial to the upper limit of sintering temperature; the difference is that the second sintering time is far less than the first sintering.

问题二:壶盖气孔那儿为什么容易烧裂?

Question 2: why is it easy to crack the pot lid?

答:很多时候都是晾坯不合格造成的。

A: a lot of times, it’s caused by unqualified air drying.

壶盖气孔处是整个壶盖上最厚的部位,如果烧制前没有晾干到合格的干湿度,烧制时因剧烈收缩就很容易撕裂。

The air hole of the lid is the thickest part of the whole lid. If it is not dried to the qualified dry humidity before firing, it is easy to tear due to severe shrinkage.

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