建水紫陶刻填不平,算不算是瑕疵?

陶友询问自己买到的紫陶,刻填装饰的字画部位与坯体其他部位相比,并不平整,大多是轻微凸起的,而且字画部位本身也不平整,怀疑是不是买到了瑕疵品。

Tao you inquired about the purple pottery that he bought. Compared with other parts of the green body, the calligraphy and painting parts of the carving decoration are not smooth, most of them are slightly convex, and the calligraphy and painting parts themselves are not smooth. They doubt whether they have bought the defective products.

其实,这种情况恰恰是刻填装饰工艺留下的痕迹。为什么装饰的部位难以和其他部位一样平整?主要是以下三个原因造成的:

In fact, this kind of situation is exactly the trace left by the carving decoration process. Why is it difficult to decorate the parts as flat as other parts? It is mainly caused by the following three reasons:

第一个原因是用于刻填的泥料与坯体本身所用的泥料性质并不相同,因此填入坯体的泥料难以与陶坯浑然一体,总会有或多或少的痕迹。

The first reason is that the nature of the clay used for engraving and filling is not the same as that used for the body itself, so it is difficult to integrate the clay into the green body, and there will always be more or less traces.

而且正是因为泥料性质不同,给很多制陶艺人带来困扰,最常见的就是刻填画面边缘开裂,这是紫陶艺人最头疼的问题。

Moreover, it is precisely because of the different nature of the clay that many potters are troubled by. The most common problem is the edge cracking of the filling picture, which is the most headache for purple pottery artists.

第二个原因是泥料性质不同,在超过1100℃的高温环境中,二者的收缩率也不一样。所以在湿坯刻填时,即使将刻填画面精修到与坯体其他部位一样平整,在烧制时也会因为收缩率的差异而出现两种结果:

The second reason is that the properties of the mud are different, and the shrinkage rate of the two materials is different when the temperature is higher than 1100 ℃. Therefore, even if the engraving image is refined to be as smooth as other parts of the green body, there will be two results due to the difference of shrinkage rate during the firing process

一是发生部分凸起的情况,也就是在收缩的过程中,坯体各个部位相互挤压,从而使得刻填部位、甚至其他部位也会有轻微凸起;二是发生部分凹陷的情况,由于刻填泥料与坯体泥料性质不同,收缩率也不同,如果坯体泥料收缩率大于刻填泥料收缩率,就会互相撕裂,轻微者出现凹陷,严重者出现裂纹。

One is the case of partial bulge, that is, in the process of shrinkage, all parts of the green body squeeze each other, so that the engraving part and even other parts will have slight bulge; the second is the situation of partial depression. Due to the different properties of the filling mud and the blank mud, the shrinkage rate is also different. If the shrinkage rate of the green mud is greater than the shrinkage rate of the cutting clay, they will tear each other Crack, slight dent, severe crack.

第三个原因是多次刻填造成的,一些紫陶作品的装饰,需要多次刻填完成,每一次刻填,所填入的泥料都与其他泥料性质不同,因此多次刻填并烧制后,极容易出现不平整的现象。

The third reason is caused by many times of engraving and filling. The decoration of some purple pottery works needs to be completed many times. Each time, the clay filled in is different from other materials. Therefore, after many times of filling and firing, it is very easy to appear uneven phenomenon.

实际的情况是,95%以上进行了刻填装饰的紫陶,其刻填图案部位,都不是完全平整的。这是建水紫陶泥性、工艺、收缩率等等综合形成的结果,属于紫陶天生带有的特征。

The actual situation is that more than 95% of the purple pottery decorated with engraving patterns are not completely flat. This is the result of the comprehensive formation of Jianshui purple pottery’s clay property, technology and shrinkage rate, which belongs to the inherent characteristics of purple pottery.

因此,刻填部位不平整的紫陶,只要不开裂,没有严重的凸起或凹陷,就不属于瑕疵品。

Therefore, the purple pottery with uneven filling position is not a defective product as long as it does not crack and has no serious bulge or depression.

未经允许不得转载:饮茶乎 » 建水紫陶刻填不平,算不算是瑕疵?

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