Why do tiles have the problem of color difference ?

First, the reason for the color difference of the tile If the tile that has just been purchased has not been paved before the color difference is found to have the problem, it is mainly due to the following two situations:

1. Ceramic tile production process In the process of ceramic tile processing, due to the influence of calcium, potassium and other mineral raw materials contained in the tile itself, different materials of ceramic tiles are affected by different temperatures in the process of high-temperature calcination, resulting in different degrees of color difference on the surface, but generally such color changes are small.

2. Production batch number.

Mixing each batch of ceramic tiles are made by specific raw materials for processing, different batches of ceramic tiles are affected by a variety of factors, so there are many differences in the selection of raw materials, if different batches of tiles are mixed together, it will form the color difference we see today.

If the tile is found to have color difference after laying on the wall and floor, it is mainly due to the following three situations.

1. The tile laying direction is wrong in the process of production of ceramic tiles, because its raw materials are affected by temperature, so the ceramic tiles produced contain a certain slight color difference, as long as the distribution method is arranged in a certain way, the color difference of the tiles will not be too obvious, if the random paving will make the tile look very large color difference.

2. Ceramic tile water absorption rate is large, I believe we all know that the tile with small water absorption rate is a good tile, the tile with large water absorption rate will not only lead to different degrees of water accumulation on the ground, but also make the anti-slip effect of the ground greatly reduced, the general low water absorption rate of the tile can effectively avoid the ground dirty water adsorption on the tile, so as to ensure that the tile will not be affected by external reasons for color difference.

3. There are stains on the surface of the tiles Stains appear on the surface of the tiles, so that people's vision is affected by the stains and produce the problem of large color difference of the tile.

Second, what to do if the tile has color difference The problem of color difference in ceramic tiles can be solved according to the reason why the tile contains different color difference.

If you find that the purchased tiles have color differences, you can contact the seller for replacement; If you can't determine whether the tiles you buy contain color difference, you can seize a few tiles and splice them on the ground to judge whether the tiles contain obvious color difference; If the tile has a color difference problem after a certain period of use, you can consider whether the tile contains stains, and it can be destained and wiped to solve the problem of tile color difference.

When you buy ceramic tiles, you must measure the water absorption rate and anti-slip effect of ceramic tiles, so as not to affect the key elements that affect the quality of ceramic tiles in people's future family life, and also avoid bringing a series of unnecessary troubles to yourself.

The main reasons for color difference are as follows:

1. The manufacturer's color inspection system is not very good or the control is not strict, and the first pass is not good;

2. When the merchant delivers the goods, the products of different batches are mixed together and sold;

3. When the owner **, the merchant and the owner did not check the color number of the batch of bricks when they were purchased before;

4. The time span of paving is long, the drying time is different, and the post-paste product is not completely dry.

Different batches of tiles will have color differences, so the same batch of tiles should be used in the same part to avoid different color differences.

The color of different batches of tiles will be different, because in the process of ceramic tile production, the temperature and the length of firing time will affect the color, so the color will be a little different, but it is not a color difference. Color difference refers to the same batch of tiles, if there is a color difference, it is considered a color difference.

Regardless of whether it is a tile or an ecological board for decoration, it is the same.

There will be deviations in different colors of different color batches, which is called color difference.

The national standard GB T4100-2016 "Ceramic Tiles" stipulates: put multiple tiles on the observation board with a size of 3 square meters, and the inspector stands three meters away for visual observation, if there is no obvious color difference between the tiles and the tiles, it is qualified; If there is a color difference, it means that there is a color difference.

Discoloration and color difference after tile paving may be caused by excessive water absorption, but in addition to quality factors, non-standard operation and improper maintenance during paving may also lead to discoloration.

Construction link. 1. The tiles are not soaked in water.

Porcelain tiles that have not been soaked in water or are not soaked enough may absorb the moisture in the cement mortar, resulting in a change in color.

The time and number of soaking water are also related, and the new bricks soaked in water once after paving and the old bricks soaked in water twice will have the problem of dark and light color differences, so pay attention to the amount of soaking bricks and avoid repeated soaking.

2. The brick joints are not well handled.

After the tile is paved, the brick joint treatment can not only beautify the effect but also effectively prevent water penetration. Materials such as grouts, caulks or sewing agents all have a certain waterproof effect. If the brick joint is not treated well, the residual moisture on the brick surface penetrates under the brick through the brick joint, which may cause water seepage and discoloration.

3. Waterproof is not done.

If the tiles in the toilet and bathroom have changed color, it is likely that there is a leak in the wall and floor due to the lack of waterproofing work.

The waterproof layer of the wall of the toilet and bathroom should be at the top to fully prevent water vapor and fog from penetrating into the wall; The waterproof layer of the ground should be brushed at least three times to prevent mold, water leakage and other problems on the wall.

4. The tile batch and color number are different.

Although it is the same model of tile, there will be a slight error in the color of different factory batches, and it is necessary to go through color separation to classify the tiles of the same color into the same color number. Mixing colors when products are graded out of the factory, or workers do not pay attention to the color number when paving, will lead to obvious color difference between adjacent tiles.

When the owner accepts the tiles, it is necessary to carefully check the color number on the packaging box of the same model of product, and if it is found that there are different batches and color numbers of products, it is necessary to notify the seller in time or refuse to accept the batch of goods. If it is **, it is necessary to check whether it is consistent with the batch number and color number of the first batch of products.

There will also be color difference in the same batch of products, but the color difference is not serious. But the color difference of the same product in different batches is uncontrollable, so it is certain that all tiles have color difference, just like there is no identical leaf in the world, as long as it is within the acceptable range.

Whether the color difference of the tile is relative, generally the color difference of the same batch of tiles is not obvious, so in the project, the holding is a unit project as far as possible to plan in advance, according to the amount of the same batch of ceramic tiles, in order to ensure the quality of the project. Although it is the same batch of tiles in the specific tiling, or according to the program to select the bricks, there are color problems, as well as square, size and so on, to ensure the same effect in the same room.

Not all tiles have color differences. I think all tiles will have color differences. Good tiles are relatively small in color. Poor tiles, relative color difference is relatively large.

There are only a few of them, and these should be selected by yourself in the store.

"Color difference" refers to the difference in color between one brick and another, or the difference in color between one part of the same brick and other parts. Chromatic aberration discrimination: Under normal circumstances, in an area of about a few square meters, under appropriate and uniform light, a batch of products can not see obvious color differences, it is regarded as no chromatic difference.

The reason for the color difference: on the one hand, due to the lack of standardization of ceramic raw materials, the diversification of origin, the mining technology is not uniform, and the standards of raw materials are different, so that the manufacturers have to change the raw materials frequently, and the process is bound to be readjusted. However, from the perspective of foreign consumption and domestic fashion trends, the color difference phenomenon is gradually accepted by consumers who pursue a return to nature, and the color difference of natural stone is accepted by the public.

It can be circumvented like this:1. Carefully check the color number on the packaging box of the same model of the product when accepting the tile, to see if Li Kaibi has a different batch number and color number of the product, if you find a different batch and color number of the product, you should promptly notify the seller or refuse to accept the batch of goods.

2. Take four tiles out and lay them on the ground with good light to see if there is any color difference.

3. During construction, the workers who explain the work should pay attention to check the color number of the product and other quality problems during construction, and stop the construction immediately if there is a problem, and contact the seller immediately.

4. When mending bricks, be sure to check the batch number and color number of the original product, and make up according to the same model and color number.

It can be seen that the color difference of tiles is a common problem, but we need to avoid the color difference of tiles when buying tiles, and we need to know how to choose when buying, pay attention to check the model and color number of the tile, if the tile appears color, it can be repaired by some methods.

Ceramic tile is the most widely used ground decoration material, but many people are confused, obviously when buying tiles look very beautiful and bright, but after sticking on the ground, they found that some tiles are light in color, some tiles are dark in color, and they look uneven. So, is it normal for tiles to have color difference? Is tile color difference a quality problem?

Below we bring an introduction to the national standard for tile color difference.

Is it normal for tiles to have color differences?

Normal. The color difference of porcelain Huiming brick refers to the difference in color between one brick and another, or the difference in color between different parts of the same brick. Under normal circumstances, in an area of about a few square meters, under appropriate and uniform light, a batch of products can be regarded as no color difference before seeing obvious color difference.

However, from the perspective of foreign consumption and domestic fashion trends, the phenomenon of color difference is gradually accepted by consumers who pursue a return to nature, and the color difference of natural stone is especially accepted by the public.

Ceramic tiles with color difference do not mean that the quality is poor, because the color of the tiles is difficult to control, generally the same batch of the same model. The chromatic aberration is basically the same. Instead of the same batch of tiles, there will be some color differences.

The main reasons for the color difference are as follows. First, from the production point of view, it is difficult to control the raw materials and sintering temperature of each batch of ceramic tiles. Therefore, manufacturers will generally produce tiles at different times, marking batch numbers, color numbers, if there is a color difference in the same batch number and color number of tiles, it is not strictly controlled in the production process, which is a quality problem.

Introduction to the national standard for tile color difference

At present, for the color difference of ceramic tiles, the state does not clearly stipulate the standard color difference range. According to "GB T4100-2006 Ceramic Tile", during the firing process of ceramic tiles, small color differences between the product and the standard board are unavoidable. Especially for products produced at different times, the color tone is always prone to subtle changes, which is related to the change of raw materials, the measurement deviation of the ratio, the temperature during firing, the fluctuation of the firing atmosphere, etc., and even the change of climate.

Therefore, the factory must carry out "color number" sorting for the kiln products to ensure that the color tone of the same batch of products is the same or basically the same.

To sum up, it is normal for tiles to have color differences, because there will be some errors in the color of different factory batches, and the color mixing of products when they leave the factory grading, or the workers do not pay attention to the color number when paving, which will lead to obvious color difference of adjacent tiles. However, the color difference of the tile is not a problem with the quality of the tile itself. The obvious color difference of the tiles is the visual result of the contrast between the tiles.

At present, there is no clear standard for the color difference of tiles, so we can pay attention to distinguishing the color number and batch when buying tiles.

Hello dear, the color difference of ceramic tiles is because in the production process of ceramic tiles, there are certain changes and differences in the composition, color, texture, etc. of raw materials, so the color difference of ceramic tiles is caused.

Specifically, the main raw materials of ceramic tiles are clay and sandstone, which may come from different mining sites or different depths, so there may be differences in their composition and quality, resulting in different colors and textures of the tiles. In addition, during the production process of ceramic tiles, factors such as temperature, pressure, drying time, etc., may also affect the color and texture of ceramic tiles.

In addition, the color difference of the tiles can also be affected by external factors such as light and angle. Certain colors may appear darker or brighter in different lighting, and changes in color and texture can also be felt when looking at tiles from different angles. I hope mine can help you and have a great day