The difference between high temperature resistant sight glass and tempered sight glass
1，The concept of tempered sight glass: the tempered sight glass belongs to the safe sight glass. Toughened sight glass is a kind of prestressed sight glass, in order to improve the strength of the sight glass, the methods commonly used in chemistry or physics, formed on the surface of sight glass sight glass under compressive stress, first offset surface stress force, so as to improve the bearing capacity of reinforced sight glass, its wind, cold, impact etc..
The concept of high temperature sight glass: high temperature resistant sight glass also called high temperature sight glass, heat-resistant sight glass, heat-resistant sight glass, heat-resistant sight glass, heat-resistant sight glass belonging to silicate sight glass series, refers to a certain temperature tolerance of sight glass, including a certain temperature high fever and no fire situations are hot air fire situations.
 
2, toughened sight glass is ordinary sight glass tempered sight glass products after, usually called after ordinary sight glass toughened sight glass, high temperature resistant sight glass is a type of rich products, a variety of products with excellent thermal stability, can withstand the cold and hot temperature. Tempered sight glass is not a high temperature resistant sight glass, but many high temperature resistant sight glass products can be tempered to enhance the strength of the sight glass. The flexural strength and fracture toughness of the sight glass treated by steel increased obviously, but the elastic modulus and hardness of the sight glass changed little. There are also some sight glass with high temperature resistance. The softening point is higher and the expansion coefficient is small, so it can not be toughened.
High temperature resistant sight glass not only ordinary meaning on high temperature, and under certain temperature, medium (acid and alkali) sight glass and pressure rating can reach or bear the corresponding temperature and corresponding high pressure grade and medium special sight glass, usually made of high purity silica mineral materials, refined by high temperature it can still be maintained, and the permeability of the original transparency sight glass in high temperature environment.

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The difference between high temperature resistant sight glass and tempered sight glass

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tempered sight glass	high temperature resistant sight glass	temered glass mirror	windows view glass mirror	sight glass for industry
tempered sight glass	high temperature resistant sight glass	temered glass mirror	windows view glass mirror	sight glass for industry