Repair method of electroceramic ceramic pieces

Abstract

The invention relates to a technique for repairing electroceramic ceramic pieces, and particularly relates to a technique for carrying out repair when the electroceramic products have defects on the surfaces and the electroceramic products are rejects with defects. The technique comprises the steps of ceramic piece treatment and cleaning, glaze preparation, glazing repair and sintering: clearing away the attachment from the ceramic pieces which have defects on the surfaces and drying thereafter; carrying out glazing repair by using glazes with same colors, wherein the glazed layer is 0.10-0.4mm thick, and if the thickness cannot meet the requirement, the glazing concentration of the glaze slip can be properly improved; and finally drying the restored ceramic pieces and sending into a tunnel kiln or shuttle kiln at 1250+ / -30 DEG C for sintering. The invention discloses a method for repairing the ceramic pieces which have defects on the surface; and according to the method, glazes which have same colors as the defected products are used for glazing repair and the defected products are sintered in the tunnel kiln or shuttle kiln at high temperatures, so that the production cost of the enterprise is greatly reduced, the benefit of the enterprise is improved and the defective percentage is reduced.

Description

technical field [0001] The invention relates to a method for repairing an electric porcelain piece, in particular to a repairing method when the surface of the electric porcelain product is defective or the electric porcelain product is defective. Background technique [0002] In the production process of electric porcelain, every process will produce defects, and the defects produced in some processes cannot be repaired, and are generally regarded as defective products or scrapped. The firing process of electric porcelain production is a special process, which can fully reflect the hidden defects or defective products produced in each process after this process. The hidden defect products that appear in the production process of electric porcelain account for 15 to 20%, such as defects such as lack of glaze, thin glaze, small cracks on the umbrella surface, sticky sand, sticky slag, spots, etc. These defects do not affect the normal use of the product, but products with def...

AI Technical Summary

Problems solved by technology

[0002] In the production process of electric porcelain, every process will produce defects, and the defects produced in some processes cannot be repaired, and are generally regarded as defective products or scrapped

The firing process of electric porcelain production is a special process, which can fully reflect the hidden defects or defective products produced in each process after this process. The hidden defect products that appear in the production process of electric porcelain account for 15 to 20%, such as defects such as lack of glaze, thin glaze, small cracks on the umbrella surface, sticky sand, sticky slag, spots, etc. These defects do not affect the normal use of the product, but products with defects in appearance affect the product grade and the benefits of the enterprise , and increase the production cost of the enterprise

At present, organic materials are generally used to repair defective electrical porcelain products, and low-temperature glazes are also used to partially repair defective parts; but these two methods have the following problems: 1. Use organic materials to repair. It is prone to color difference, and the second is easy to fall off. Now many factories generally no longer use it.

2. Using low-temperature glaze for repairing, color matching is required in the early stage preparation, which is a large and complicated workload. After low-temperature firing, due to the inconsistent expansion coefficient of the repairing glaze and the original glaze, it is easy to cause the repairing glaze to fall off and become a defective product.

In short, at this stage, most companies directly define these defective products as scrap products and do not use them any more.