Manufacturing method of optical glass

Abstract

The invention belongs to the technical field of glass manufacturing, and particularly discloses a manufacturing method of optical glass capable of improving the input-output rate of products. According to the manufacturing method of the optical glass, a glass raw material is effectively smelted by reasonably controlling the heating temperature; a melting tank is used for melting the glass raw material; the bottom surface of a melting cavity is an inclined surface; the lower edge of a melting discharge port is not higher than the inclined lower end of the bottom surface of the melting cavity; therefore, almost all high-temperature molten glass in the melting cavity can flow out of the melting discharge port to enter the next procedure in the later period of product production, and finally aqualified product is formed, so that the input-output rate of the product reaches 95% or above, the input-output rate of the product is greatly increased, and the manufacturing cost of the optical glass is reduced; besides, compared with an existing manufacturing method of the optical glass, the step of removing scrapped products is omitted, and meanwhile the step of manually beating and burningcondensed glass at the discharge hole through a burning gun is omitted.

Description

Technical field [0001] The invention belongs to the technical field of glass manufacturing, and specifically relates to a manufacturing method of optical glass. Background technique [0002] The optoelectronic industry is developing rapidly, with a wide variety of optical materials, and with the increase in the price of rare earth raw materials, the competition for optical glass is becoming more and more fierce. How to improve product quality, ensure good product rate and input-output rate has become an important issue for industry development, especially When switching the production of different products, the problem of how to ensure product quality and input-output rate is particularly prominent. [0003] Currently, optical glass manufacturing equipment is generally used to produce optical glass. Such as figure 1 As shown, the existing optical glass manufacturing device includes a melting tank 100, a clarification tank 200, and a discharge tank 300; the melting tank 100 is prov...

AI Technical Summary

Problems solved by technology

[0005] Since the bottom surface of the melting chamber 110 is tapered, the lower edge of the melting outlet 111 is often higher than the lowest point of the bottom surface of the melting chamber 110 by a certain distance, thereby causing the glass liquid level in the melting chamber 110 to be lower than the melting outlet 111 When the lower edge of the melting chamber 110 is closed, the remaining molten glass in the melting chamber 110 cannot flow out from the melting outlet 111 to enter the next process, and can only be discharged as scrap products through the discharge hole 112 on the bottom surface of the melting chamber 110; these scrap products greatly reduce the Product input-output ratio

It is understood that in existing optical glass manufacturing devices with a daily output of 1 to 2 tons, nearly 1 ton of molten glass is often left as a scrap product; because the order quantity of a single product is usually 3 to 5 tons, the production takes 2 to 5 days It is necessary to switch to the production of the next different type of product, which leads to only about 70% of the input-output ratio of the product, and the smaller the order, the lower the input-output ratio and the higher the production cost; even if the order quantity is large and the production process All the processes are completely normal, and the input-output rate is only about 82%.

[0006] In addition, manually using a burner to knock the condensed glass at 112 of the burner discharge hole is not only difficult to operate, but also may cause the high-temperature glass liquid to flow out instantaneously, making it difficult to evacuate personnel and easily causing safety accidents

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