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Heat glass modelling thermal pressure transfering plate

A molding and glass technology, applied in the field of heat transfer plates for glass molding, can solve problems such as process variation, precision deviation of molded glass, and increase in defective rate.

Inactive Publication Date: 2008-01-23
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will adversely affect the flatness and thermal conductivity of the surface of the heat transfer plate 200
In severe cases, the mold set 100 will shake due to the unevenness of the surface of the heat transfer platen 200, and the accuracy of the molded glass produced by it will deviate, and the long-term use will cause an increase in the defective rate
At the same time, the heat transfer plate generally made of sintered tungsten carbide superhard alloy, usually at a molding temperature of 500-700°C, has a service life of about 500 molding times, and some inevitable process variations will occur.

Method used

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  • Heat glass modelling thermal pressure transfering plate
  • Heat glass modelling thermal pressure transfering plate
  • Heat glass modelling thermal pressure transfering plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Use coefficient of thermal expansion at 4×10 -6 / K~9×10 -6 / K cemented tungsten carbide super hard alloy is used as the substrate 402, and the working surface 402a of the substrate 402 is ground and polished to make the surface roughness Ra value not greater than 5nm.

[0061] Next, a TiAl alloy film is used as the intermediate layer 403, which is formed on the working surface 402a of the substrate 402. After the ground and polished substrate 402 is cleaned, it is placed in the above-mentioned coating reaction chamber, using a TiAl alloy target with a ratio of Ti to Al of 50 / 50atom%, at a temperature of 250-450°C, and an RF sputtering power of 500W Bottom, the substrate bias voltage is 120V, and argon gas is introduced to reach 2×10 -1 At the working pressure of Pa, a TiAl alloy film with a thickness of about 80 nm is deposited on the working surface 402a of the substrate 402 as the intermediate layer 403.

[0062] Finally, a TiAlN ternary alloy film is used as the protecti...

Embodiment 2

[0065] Use coefficient of thermal expansion at 4×10 -6 / K~9×10 -6 / K cemented tungsten carbide super hard alloy is used as the substrate 502, and the working surface 502a of the substrate 502 is ground and polished to make the surface roughness Ra value not greater than 5nm.

[0066] Next, a TiAl alloy film is used as the first intermediate layer 503, which is formed on the working surface 502a of the substrate 502. After the ground and polished substrate 502 is cleaned, it is placed in the above-mentioned coating reaction chamber, using a TiAl alloy target with a ratio of Ti to Al of 50 / 50atom%, at a temperature of 250-450℃, and an RF sputtering power of 500W Bottom, the substrate bias voltage is 120V, and argon gas is introduced to reach 2×10 -1 At the working pressure of Pa, a TiAl alloy film with a thickness of about 80 nm is deposited on the working surface 502a of the substrate 502 as the first intermediate layer 503.

[0067] Next, a TiAlN ternary alloy film is used as the ...

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Abstract

The invention relates to thermal pressure transmission plate with high-temperature stability for glass mould, which comprises a basic material with a work surface, an intermediate layer, and a protection layer from bottom to top. This invention uses surface with high temperature oxidation resistance achieved 600-800Deg to decrease greatly the oxidation phenomenon and product bad ratio, ensure stability, avoid oxidation and surface damage, and prolong service life.

Description

Technical field [0001] The invention relates to a process equipment for glass molding, in particular to a heat transfer pressure plate for glass molding with high temperature stability. Background technique [0002] The known optical glass molding process, as shown in FIG. 1, is equipped with a mold set of glass nitrate material for forming a mold set 100 that has a high degree of flatness and includes a fixing base 105, a cooling unit 102b, a heating unit 103b, and a heat transfer platen. The bearing seat with heating function composed of 200 has a high degree of flatness during forming and includes a movable pressing mechanism 101, a cooling unit 102a, a heating unit 103a and a heat transfer plate 200 with heating and pressing functions. The pressing seat moves down and abuts on the mold group 100 for forming forming. After heating and pressurizing it, the upper pressing seat is moved up, and then a pushing and conveying mechanism (not shown) is used to form the forming mold. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B11/00C03B11/06
Inventor 王坤池
Owner ASIA OPTICAL CO INC