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Factors affecting the performance of terracotta roof tiles

by:New Sunlight Roof      2021-05-20
We have introduced the four major characteristics of high-end plastic roof tiles in detail. It can be seen that this tile is not only highly decorative, light and cheap, but also has a long service life. In addition, it also has a good waterproof effect. So today I want to introduce the influencing factors of the performance of terracotta roof tiles, I hope everyone can understand it after reading it! In Europe, roof tiles have undergone simple firing with clay in the early days, and now they have developed into terracotta roofing tiles with various shapes, rich colors and complete functions. The level of production technology has continuously improved in the development of human civilization. In recent years, with the rapid economic development and increasing international exchanges, European architectural styles have been increasingly recognized and loved by the domestic public. Especially European terracotta tiles are exquisite and unique in appearance and have a strong cultural atmosphere, but compared with domestic terracotta tiles, their prices are relatively high and the transportation cycle from overseas is also long. So far, the production process followed by terracotta roofing tile companies all over the world is as follows: material selection and preparation of terracotta → terracotta compression molding → terracotta drying → surface glazing → tile firing. However, the performance of ceramic tiles produced by the same process is different. Among them, some important factors will play a key role in the performance of the product. At this time, we can control the production process and then realize the development of new ceramic tiles. In the early days, people often used metal tile molds to make terracotta tiles, because the production method was very simple, and the tiles produced were long-lived and could be used for many years; The surface of the tiles that come out will have defects such as dents or peeling off. This situation will bring the risk of leakage to the roof. Because of this, this backward production process has been gradually abandoned and replaced by rubber tile molds. . The stability of the rubber tile model is better than that of the metal tile model. On the one hand, it can meet the requirements of complex shapes, and on the other hand, it will not be deformed due to bumps. However, the rubber tile model is easy to cause freeze-thaw damage. After years of research, European first-line companies have produced the current advanced tile model-gypsum tile model. Because gypsum has the advantages of stable shape and non-deformation, and will not stick to the clay, the terracotta tile produced in this way has a fine and complete surface, stable dimensions, and neat edges, which can effectively highlight the design details of the terracotta tile. And Wattau is another key factor that determines the success or failure of terracotta. When the ceramic tile is fired in the kiln at a high temperature, the temperature can exceed 1000℃, which will make the tile body soft. At this time, the tile body plays a role of support and fixation, which is convenient for later firing and molding. With the development of terracotta roof tile production technology, tile manufacturers began to introduce U-shaped roof tiles, which consist of 10 to 15 ceramic tiles as a group, placed vertically in a fixed roof tile for firing. The front of each tile in the U-shaped tile is tightly attached by several protruding points on the back of the adjacent tile. During firing, the temperature rises, the clay becomes soft, the glaze layer on the front of the tile is adhered, and when it is forcibly separated later The glaze falling off will not only affect the appearance, but also limit the long-term waterproof effect. In order to make up for the shortcomings of the U-shaped Watt, the H-shaped Watt came into being. Each terracotta roof tile has its own H-shaped tile. Placing the tile horizontally in the tile for firing can reduce the influence of gravity. During firing, the hot air in the kiln circulates freely around the periphery of each ceramic tile, so the heating is uniform, the size is stable, and there will be no color difference due to the temperature difference between the inner and outer rings. The glaze does not touch the adjacent tiles, and the surface of the tiles is not There will be scars of peeling off the glaze; although the clay will become soft when exposed to high temperatures, because it is placed horizontally, the watto can play a good supporting role on the back. Tag: roof tile construction, roof tile standard, (690)
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