One. Intuitive method
1. Intuitive method
Just take out a few refractory bricks and observe the surface. There will be black spots on the surface of refractory bricks, which is unavoidable and a normal phenomenon. However, the more black spots on the surface of refractory bricks, the more impurities, the worse its quality and performance, the shorter the service life of the masonry refractory brick lining, and the shorter the time to replace the refractory bricks. Observe whether there are missing pieces on the edges and corners around the refractory bricks, and check whether there are cracks on the brick surface.
2. Touching method
Directly touch the surface of the refractory brick to check whether it is rough. The surface of good refractory bricks feels smooth and flat, and the color is bright and evenly distributed, while the surface of poor-quality refractory bricks feels rough, slag-dropped, and the color is dull and unevenly distributed.
3. Weighing method
Each refractory brick has a size. For example, the size of a standard refractory brick is 230*114*65mm. Refractory brick manufacturers provide physical and chemical indicators for each refractory brick, and check the volume density value. Multiply the bulk density by the refractory brick size to equal the weight of each refractory brick. Chongyang checks a few pieces, weighs them with an electronic scale, and checks whether they are qualified. the
Two. How to effectively identify the quality of refractory bricks
1. Look at the proportion of impurities in refractory bricks
Generally speaking, impurities will be produced during the sintering process of refractory bricks strictly according to the proportion of ingredients, which is no problem. However, some manufacturers often do not produce according to the proportion of materials used, so that the sintered refractory bricks do not have a hard structure, so that the quality of the sintered bricks is not good
enough, and then deceive consumers with high prices. Then when you buy refractory bricks, you can check it through its surface. Generally, the surface of refractory bricks with high impurity content will be very rough, while those refractory bricks that meet the quality standards have uniform overall color and smooth and flat surface, which we can intuitively distinguish from the surface.
2. It is the sintering experiment of refractory bricks
This method works best. Generally, when we buy refractory bricks, we will go to the manufacturer to check. Especially before we decide to buy, we must ask the manufacturer to conduct a high-temperature test to check whether the sintering index of the refractory brick is the same as the standard index. As long as the deviation of the experimental results is not large, the quality of the brick body is still acceptable, which is also a good method. If you have doubts about this method, you can use the second method for detection.
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