Method for repairing porcelain forming defects

Abstract

The invention discloses a method for repairing a finished porcelain defect, which comprises the following steps: S1, manufacturing a hot patching mud strip; s2, preparing a repairing glaze group; s3, the refractory cotton is stuffed into the ceramic forming defect and compacted; s4, filling ceramic forming defects with hot patching mud strips; s5, the filling position is covered with the repairing glaze cluster; and S6, secondary burn-back is carried out after polishing. And the porcelain forming defect mainly aims at blank baldness or palm eyes. According to the method, the bald hole or the palm hole of the finished porcelain body is filled with the refractory cotton and then is filled with the hot patching mud, so that burn-back shrinkage and gas generated by burn-back can be reduced, exhaust holes and recesses after burn-back are repaired are avoided, and the qualified rate of the bald hole or the palm hole of the finished porcelain body after being repaired and burn-back is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of porcelain repair methods, and in particular relates to a method for repairing porcelain defects. Background Art

[0002] Ceramics have now been popularized in all aspects of people's lives, including tea cups, tea sets, vases and sculptures, as well as toilet bodies, etc. They are inseparable from people's lives. It can be said that the quality of porcelain is related to the quality of people's lives.

[0003] The finished ceramic porcelain is first injected into the gypsum mold, and then dried, glazed and fired after forming. Then the finished porcelain obtained after one firing often has defects such as baldness or brown eyes. The existing repair method is mainly to directly mix and stir various repair components to form a repair material and fill it into the defects of the finished porcelain. The advantage of this repair method is that the repair is more universal. Whether it is a wet or dry body, whether it is a crack type defect or a brown eye type defect, it can be repaired with the same method. However, the problem of this repair method is also obvious. For example, when repairing the brown eyes of the finished porcelain, the repair material is directly used to fill the brown eyes of the finished porcelain. After the glaze is re-fired, it is found that there are still many vents or obvious depressions at the repair position, and the qualified rate of the finished porcelain after re-firing is very low.

[0004] Therefore, improving the porcelain repair method, increasing the qualified rate of porcelain brown spots or bald patches repair and re-firing, and making the porcelain smoother and more beautiful have become issues that need to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to provide a method for repairing porcelain defects, by directly using refractory wool as a filler, combined with hot repair mud strips and repair glaze balls, and filling, covering and re-firing in a specific order, so that the qualified rate of porcelain brown eyes or bald spots after repair and re-firing is greatly improved.

[0006] In order to achieve the above purpose, the following technical solutions are adopted: A method for repairing porcelain defects, comprising the following steps: S1, making a hot repair mud strip; S2, making a repair glaze ball; S3, inserting refractory wool into the porcelain defect and compacting it; S4, filling the porcelain defect with the hot repair mud strip; S5, covering the filled area with the repair glaze ball; S6, performing secondary re-firing after grinding; the porcelain defect is a bald spot or a brown eye.

[0007] By adopting the above technical scheme, when repairing defects such as brown eyes and baldness in porcelain, refractory wool is first stuffed into the defects and compacted before filling and covering with hot repair mud strips and repair glaze balls. After repairing the defects in this way and re-firing them, the qualified rate of the repaired porcelain is greatly improved.

[0008] Furthermore, the components of the hot-filling mud strip include porcelain powder, glycerin and water.

[0009] By adopting the above technical solution, the main components of the hot patching mud strip are described.

[0010] Furthermore, the hot-patch mud strips are formed by evenly mixing porcelain powder, glycerin and water and kneading the mixture into strips.

[0011] By adopting the above technical solution, a method for making hot patching mud strips is described.

[0012] Furthermore, the moisture content of the hot patching mud strip is 25%±1.

[0013] By adopting the above technical scheme, the moisture content of the hot repair mud strip is 25%±1, that is, under the premise of ensuring the bonding degree during rolling into mud strips and repairing, the moisture content of the repaired part during secondary recycling is reduced, the shrinkage phenomenon is reduced, and the qualified rate after porcelain repair is improved.

[0014] Furthermore, the components of the repair glaze ball include glaze powder, glycerin and water.

[0015] By adopting the above technical scheme, the main components of the repair glaze group are described.

[0016] The repair glaze ball is formed by evenly mixing glaze powder, glycerin and water and kneading them into a ball.

[0017] By adopting the above technical solution, a method for making a repair glaze ball is described.

[0018] Furthermore, the moisture content of the repair glaze mass is 25%±1.

[0019] By adopting the above technical scheme, the moisture content of the repair glaze ball is 25%±1, that is, under the premise of ensuring the degree of bonding during kneading and repairing, the moisture content of the repaired part during secondary recycling is reduced, the shrinkage phenomenon is reduced, and the qualified rate after porcelain repair is improved.

[0020] Compared with the prior art, the beneficial effects of the present invention are: By adopting this method to repair brown spots or bald spots on the porcelain floor, after re-firing, the qualified rate of repair can be increased to more than 90%, thereby making the product smoother and more beautiful, and improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the effect picture of the porcelain brown eye; Figure 2 This is a picture showing the effect of repairing the porcelain brown eye by the method of Example 1; Figure 3 This is a picture showing the effect of repairing the porcelain brown eye by the method of Example 2; Figure 4 This is a picture showing the effect of repairing the porcelain brown eye using the method of Example 3; Figure 5 This is the effect picture after the porcelain brown eye is repaired by the method of comparative example 1; Figure 6 This is the effect picture after the porcelain brown eye is repaired by the method of comparative example 2. Implementation

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. Embodiment 1

[0023] A piece of finished porcelain with brown spots after one firing was selected as the test object. Figure 1 As shown, 50g of porcelain powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into strips to obtain hot-patch mud strips for use. After testing, the moisture content of the hot-patch mud strips is 24.5%. Then, 50g of glaze powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into a ball to obtain a repair glaze ball for use. After testing, the moisture content of the repair glaze ball is 24.5%. When repairing the brown eyes of the finished porcelain, first stuff the shredded refractory cotton into the brown eyes of the finished porcelain and compact it. Then take a small piece of the hot-patch mud strip that has just been prepared and stack it in the brown eyes of the finished porcelain for filling. Then take a small part of the repair glaze ball that has just been prepared and cover the brown eyes filled with refractory cotton and hot-patch mud strips. Then use sandpaper to polish the brown eyes to make them smooth. Finally, put the finished porcelain with the repaired brown eyes back into the kiln for secondary firing. Finally, the repaired and fired porcelain is obtained. The effect is as shown below. Figure 2 shown. Embodiment 2

[0024] A piece of finished porcelain with brown spots after one firing was selected as the test object. Figure 1 As shown, 60g of porcelain powder, 5g of glycerin and 25g of water are mixed evenly and kneaded into strips to obtain hot-patch mud strips for use. After testing, the moisture content of the hot-patch mud strips is 25.1%. Then, 20g of glaze powder, 2g of glycerin and 6g of water are mixed evenly and kneaded into a ball to obtain a repair glaze ball for use. After testing, the moisture content of the repair glaze ball is 26%. When repairing the brown eyes of the finished porcelain, first stuff the shredded refractory cotton into the brown eyes of the finished porcelain and compact it. Then take a small piece of the hot-patch mud strip that has just been prepared and stack it in the brown eyes of the finished porcelain for filling. Then take a small part of the repair glaze ball that has just been prepared and cover the brown eyes filled with refractory cotton and hot-patch mud strips. Then use sandpaper to polish the brown eyes to make them smooth. Finally, put the finished porcelain with the repaired brown eyes back into the kiln for secondary firing. Finally, the repaired and fired porcelain is obtained. The effect is as shown below. Figure 3 shown. Embodiment 3

[0025] A piece of finished porcelain with brown spots after one firing was selected as the test object. Figure 1 As shown, 80g of porcelain powder, 8g of glycerin and 25g of water are mixed evenly and kneaded into strips to obtain hot-patch mud strips for use. After testing, the water content of the hot-patch mud strips is 25.9%. Then, 20g of glaze powder, 2g of glycerin and 6g of water are mixed evenly and kneaded into a ball to obtain a repair glaze ball for use. After testing, the water content of the repair glaze ball is 25.9%. When repairing the brown eyes of the finished porcelain, first stuff the shredded refractory cotton into the brown eyes of the finished porcelain and compact it. Then take a small piece of the hot-patch mud strip that has just been prepared and stack it in the brown eyes of the finished porcelain for filling. Then take a small part of the repair glaze ball that has just been prepared and cover the brown eyes filled with refractory cotton and hot-patch mud strips. Then use sandpaper to polish the brown eyes to make them smooth. Finally, put the finished porcelain with the repaired brown eyes back into the kiln for secondary firing. Finally, the repaired and fired porcelain is obtained. The effect is as shown below. Figure 4 shown.

[0026] Comparative Example 1 A piece of finished porcelain with brown spots after one firing was selected as the test object. Figure 1 As shown, 50g of porcelain powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into strips to obtain hot-patch mud strips for use. After testing, the water content of the hot-patch mud strips is 24.5%. Then, 50g of glaze powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into a ball to obtain a repair glaze ball for use. After testing, the water content of the repair glaze ball is 24.5%. When repairing the brown eyes of the finished porcelain, a small piece of the hot-patch mud strip just prepared is taken out and filled in the brown eyes of the finished porcelain. After filling, a small part of the repair glaze ball just prepared is taken out and covered on the brown eyes filled with the hot-patch mud strips. The brown eyes are then polished with sandpaper to make them smooth. Finally, the finished porcelain with the repaired brown eyes is put back into the kiln for secondary firing. Finally, the repaired and fired porcelain is obtained. The effect is as shown below. Figure 5 shown.

[0027] Comparative Example 2 A piece of finished porcelain with brown spots after one firing was selected as the test object. Figure 1As shown, 50g of porcelain powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into strips to obtain hot patching mud strips for use. After testing, the moisture content of the hot patching mud strips is 24.6%. Then 50g of glaze powder, 5g of glycerin and 18g of water are mixed evenly and kneaded into a ball to obtain a repair glaze ball for use. After testing, the moisture content of the repair glaze ball is 24.5%. Then make the repair material, that is, 35g of porcelain powder, 4g of Zhangcun soil, 52g of dry blank powder, 0.02g of water reducer, 8.98g of water, 6g of refractory cotton and 3g of glass fiber are mixed evenly and ground, and then dried and sieved to obtain the repair material for use. When repairing brown eyes of finished porcelain, the repair material is stuffed into the brown eyes of the finished porcelain and compacted. Then a small piece of the hot repair mud strip just prepared is taken out to fill the brown eyes of the finished porcelain. After filling, a small part of the repair glaze ball just prepared is taken out to cover the brown eyes filled with the hot repair mud strip. Then the brown eyes are polished and smoothed with sandpaper. Finally, the finished porcelain with the repaired brown eyes is put back into the kiln for secondary firing. Finally, the repaired and fired finished porcelain is obtained. The effect is as follows: Figure 6 shown.

[0028] The porcelain powder mentioned in the above embodiments and comparative examples is the existing common conventional porcelain powder, that is, the porcelain powder is obtained by crushing and ball-milling the waste porcelain, and then passing the porcelain powder through a 100-mesh standard sieve.

[0029] The glycerol mentioned in the above examples and comparative examples was purchased from Xilong Scientific Co., Ltd., and its product model is CAS: 56-81-5.

[0030] The glaze powder mentioned in the above embodiments and comparative examples is the existing common conventional glaze powder, that is, obtained by drying the produced glaze and then passing it through a 100-mesh standard sieve.

[0031] 100 groups of each of Example 1, Example 2, Example 3, Comparative Example 1 and Comparative Example 2 were prepared for testing, and the qualified rates after brown eye repair and secondary firing were calculated, and Table 1 was obtained.

[0032] If there are no defects such as vent holes and dents that can be observed with the naked eye after repair and re-firing, it is considered qualified. If there are defects such as vent holes and dents that can be observed with the naked eye, it is considered unqualified. The qualified rate = the number of qualified porcelains / the total number of porcelains used for the test*100%.

[0033] Table 1 The qualified rate after repairing the brown eye of porcelain and re-firing Qualification rate (unit:%) Embodiment 1 94% Embodiment 2 92% Embodiment 3 92% Comparative Example 1 12.5% Comparative Example 2 30% Through the above comparison, it can be seen that when the method of this scheme is used to repair the brown eyes of the porcelain, the qualified rate of the porcelain is greatly improved. The reason why the qualified rate of the porcelain obtained by the method of this scheme is higher than that of the comparative examples 1 and 2 is mainly because before covering with hot patching mud, most of the space of the brown eyes has been filled and compacted by refractory wool. During the secondary re-firing, the gas generated is greatly reduced and the filled part is not easy to shrink, so the qualified rate of the product after the secondary re-firing after repair is greatly improved. Regardless of whether it is directly filled with hot patching mud strips in comparative example 1, or filled with repair materials made of refractory wool and other ingredients in comparative example 2, since these filling materials have high shrinkage and produce a large amount of gas during the secondary re-firing process, it is still easy to have depressions and vents after the repair and re-firing, thereby reducing the qualified rate of the porcelain after the repair and re-firing.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for repairing porcelain defects, characterized in that: The steps include: S1, making hot patching mud strips; S2, making a repair glaze ball; S3, stuff the refractory wool into the porcelain defects and compact it; S4, fill the porcelain defects with hot mud strips; S5. Cover the filled area with a repair glaze ball; S6, secondary firing after grinding; The porcelain defects are baldness or brown spots.

2. A method for repairing porcelain defects according to claim 1, characterized in that: The components of the hot-filling mud strip include porcelain powder, glycerin and water.

3. A method for repairing porcelain defects according to claim 2, characterized in that: The hot patching mud strip is made by evenly mixing porcelain powder, glycerin and water and kneading the mixture into strips.

4. A method for repairing porcelain defects according to claim 3, characterized in that: The moisture content of the hot fill mud strip is 25%±1.

5. A method for repairing porcelain defects according to claim 1, characterized in that: The components of the repair glaze ball include glaze powder, glycerin and water.

6. A method for repairing porcelain defects according to claim 5, characterized in that: The repair glaze ball is formed by evenly mixing glaze powder, glycerin and water and kneading them into a ball.

7. A method for repairing porcelain defects according to claim 6, characterized in that: The moisture content of the repair glaze mass is 25%±1.

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