Segmented chemical toughening process

A chemical tempering, segmented technology, applied in glass tempering, manufacturing tools, glass manufacturing equipment, etc., can solve the problems of inability to realize multiple chemical tempering parameters, unfavorable mass production of products, single chemical tempering parameters, etc., to achieve The effect of shortening the production cycle, good flatness and high surface stress

Inactive Publication Date: 2011-04-27
LENS TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional chemical toughening process uses single-tank molten salt immersion for ion exchange to achieve the toughening effect. It can only achieve a single chemical toughening parameter, but cannot achieve the organic combination of multiple chemical toughening parameters, and the chemical toughening cycle is too long. Long, not conducive to mass production of products

Method used

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  • Segmented chemical toughening process
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  • Segmented chemical toughening process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] see figure 1 , Segmented chemical tempering process, including cleaning process, drying process, clamping process, preheating process, tempering process, cooling annealing process and cleaning process, the process parameters of the tempering process are: 430 ° C / 4h + 390 ° C / 2h. For example, a product requires that its surface tensile stress (CS) reach more than 600MPa after chemical tempering, and the tempering depth reach more than 50um. For this requirement, a comparison and verification of the segmented chemical tempering process and the traditional single-slot chemical tempering process is made. The comparison Data are as follows:

[0010]

Embodiment 2

[0012] see figure 1 , segmented chemical tempering process, including cleaning process, drying process, clamping process, preheating process, tempering process, cooling annealing process and cleaning process, the process parameters of the tempering process are: 430℃ / 6h+410℃ / 3h+ 390°C / 2h. For example, a product requires that its surface tensile stress (CS) reach more than 700MPa after chemical tempering, and the tempering depth reach more than 60um. For this requirement, we have compared and verified the segmented chemical tempering process and the traditional single-slot chemical tempering process. The comparison data are as follows:

[0013]

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Abstract

The invention discloses a segmented chemical toughening process comprising a cleaning step, a drying step, a clamping step, a preheating step, a toughening step, a cooling annealing step and a cleaning step. The toughening process comprises the process parameters: 430 DEG C / 4 h + 390 DEG C / 2h or 430 DEG C / 6h + 410 DEG C / 3h + 390 DEG C / 2h. The invention can effectively combine various chemical toughening process parameters and effectively improve the reinforcing layer depth and the surface hardness of a product. Meanwhile, the process can effectively improve the production efficiency of chemically toughening glass lenses, shorten the production period thereof, effectively prolong the service life of molten salt and achieve the aim of decreasing the production cost. The toughened product has high surface stress and good smoothness and can fully meet various performance requirements of general special safe glass.

Description

technical field [0001] The invention relates to a tempering process, in particular to a segmented chemical tempering process which can realize the organic combination of two or more chemical tempering process parameters. Background technique [0002] In the lens processing industry, in order to improve the surface hardness and impact resistance of the product, it is required to chemically toughen the lens to achieve a certain strength to meet the use requirements. Chemical tempering has always been a technical bottleneck that needs to be broken through. The traditional chemical toughening process uses single-tank molten salt immersion for ion exchange to achieve the toughening effect. It can only achieve a single chemical toughening parameter, but cannot achieve the organic combination of multiple chemical toughening parameters, and the chemical toughening cycle is too long. Long, not conducive to mass production of products. Contents of the invention [0003] The techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/012
CPCY02P40/57
Inventor 周群飞
Owner LENS TECH
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