[China Glass Network] The tempered glass self-explosion makes it an inevitable phenomenon in the building. The following is an effective method to solve the self-explosion of tempered glass except design and installation intervention. 1. Reduce the stress value of tempered glass: ordinary float glass will have the problem of insufficient strength and thermal cracking in the building, but there will be no self-explosion problem. According to the requirements of tempered glass quality standards, the surface stress value of tempered glass is generally controlled between 90 MPa and 115 MPa, and the tensile stress of tempered glass is about 50 MPa. As long as the tensile stress generated by the expansion of nickel sulphide particles reaches 30 MPa or more, the tensile stress is superimposed. The result is sufficient to cause the tempered glass to blew. If the compressive stress on the surface of the tempered glass is lowered, the corresponding tensile stress of the tempered glass itself is reduced, which helps to reduce the occurrence of self-explosion. 2. Make the stress of the glass uniform: the stress of the tempered glass is not uniform, which will significantly increase its self-explosion rate. Self-explosion caused by uneven stress is sometimes very concentrated, especially curved tempered glass, especially bent tempered glass. The self-explosion rate of some batches will be high, and it may cause self-explosion. The main reason is the local stress unevenness and the deflection of the tension layer in the thickness direction. Uneven stress will greatly reduce the strength of the glass, which will increase the self-explosion rate. If it is uniform, it will reduce the self-explosion rate. By measuring the experimental results before the glass hot dip treatment, the glass with a stress difference exceeding 20 MPa has a self-explosion rate higher than that of the glass with a stress difference of less than 13 MPa. 3. Tempered glass hot dip treatment: The so-called "hot dip" treatment means placing the tempered glass in a heating furnace and heat-treating for a period of time to promote the rapid completion of crystal phase transformation of the nickel sulfide particles in the tempered glass, so that after the original use The tempered glass that may be self-explosive is self-explosive in the hot dip furnace in the factory. Therefore, the hot dip treatment is also called “detonationâ€. The tempered glass treated by hot dip is subjected to a certain degree of homogenization, which has been measured. It is confirmed that the hot dip treatment is also called homogenization treatment. Usually we also call the hot dip furnace a homogeneous furnace.
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