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A kind of glass and defective technology, which is applied in glass tempering, glass manufacturing equipment, manufacturing tools, etc. It can solve the problems of low repair yield and easy warpage in the repair process of defective glass products.
Active Publication Date: 2013-01-16
BYD CO LTD
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Problems solved by technology
[0005] The invention solves the technical problem in the prior art that warpage is easily generated during the repair process of defective glass products, resulting in a low repair yield
Method used
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Examples
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Effect test
Embodiment 1
[0043] (1) Put 300pcs of polished and strengthened defective glass products of 90.63×51.8×1.21mm into the steel frame for cleaning. The cleaning machine is Jintaiying JTA-11072. After cleaning, put them into the strengthening basket; To 420°C, the heating time is 30min, and then the temperature is kept at 420°C for 20min.
[0044] (2) After receiving the material, transfer it to the molten salt furnace (Shunjiewei 1200 strengthening furnace) containing the destrengthening agent sodium nitrate for destrengthening. Destrengthening conditions: 420°C destrengthening for 6 hours.
[0045] (3) Annealing, soaking in water, transfer material and polishing after being released from the furnace, setting of polishing parameters:
[0046] Polishing pressure: light pressure 0Mpa, medium pressure 0.18Mpa
[0049] Polishing liquid: the aqueous solution of Zhicheng 620 p...
Embodiment 2
[0054] Adopt the same steps as in Example 1 to repair the defective glass product, the difference is that:
[0055] In step (2), the destrengthening condition is: destrengthening at 380° C. for 5 hours.
[0056] Through the above steps, the good glass product S2 of this embodiment is obtained.
Embodiment 3
[0058] Adopt the same steps as in Example 1 to repair the defective glass product, the difference is that:
[0059] In step (2), the destrengthening condition is: destrengthening at 450° C. for 5 hours.
[0060] Through the above steps, the good glass product S3 of this embodiment is obtained.
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Abstract
The invention provides a method for repairing non-performing glass. The method comprises the following steps of: A, contacting the non-performing glass with a melting returning enhancer, thus obtaining a reduced glass product, wherein the returning enhancer is the first alkali metal salt, wherein ionic radius of the first alkali metal ion in the first alkali metal salt is less than the ionic radius of the alkali metal ion contained on the surface of the non-performing glass, and the first alkali metal ion is the same as the alkali metal ion contained in the non-performing glass; B, polishing the reduced glass product in step A, so as to obtain the pre-fabricated glass product; and C, contacting the pre-fabricated glass product in step B and the melting returning enhancer to enhance, so as to obtain the performing glass, wherein the enhancer is the second alkali metal salt, wherein the ionic radius of the second alkali metal ion in the second alkali metal salt is less than the ionic radius of the alkali metal ion contained in the non-performing glass, and the second alkali metal ion is the same as the alkali metal ion contained in the non-performing glass. The method provided by the invention brings higher yield of the non-performing glass in repair.
Description
technical field [0001] The invention relates to the field of inorganic glass processing, in particular to a method for repairing defective glass products. Background technique [0002] Glass is a brittle material with low tensile strength. The strength of brittle materials depends largely on its surface structure. Although the surface of glass looks complete and smooth, there are actually a large number of microcracks. If the effect of these surface microcracks can be eliminated, the tensile strength of the glass can be significantly improved. The strength of glass can be increased by strengthening glass. [0003] Generally, glass is strengthened by chemical strengthening method, and the most commonly used chemical strengthening method is ion exchange method at present. Glass is mainly processed by machinery, including four processes of cutting, profiling, thinning, and chemical strengthening. If there is a defect in any process during the mechanical processing process, ...
Claims
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Application Information
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