Welding method of kovar alloy and glass
A welding method and alloy technology are applied in the welding field of kovar alloy and glass, which can solve the problems of deteriorated material properties, decreased service performance, long production cycle, etc., and achieve the effects of improving service performance, reducing energy waste and high processing efficiency.
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Embodiment 1
[0049] Provide the kovar alloy that is sealed with the glass. The surface is sanded and polished, the alloy is ultrasonically cleaned, cleaned with absolute alcohol, and dried for use.
[0050] Using YAG laser, under the control of the laser head control system, the laser head scans and remelts the alloy located in the processing area, and the processing condition is the atmosphere. Among them, a laser device with a laser wavelength of 1064nm, a power of 200W, and a scanning speed of 12mm / s was used.
[0051] Borosilicate glass powder is provided, and the borosilicate glass powder is pressed into blocks, and the glass block is placed on the alloy that has been remelted and sent to the tube furnace for heating. When heating, control the heating rate to 4°C / min, and raise the temperature to 1100°C, keep it warm for 100 minutes, and then lower the temperature. When cooling down, control the cooling rate to 5°C / min until the temperature drops to room temperature.
Embodiment 2
[0053] Provide the kovar alloy that is sealed with the glass, the surface is sanded and polished, the alloy is cleaned ultrasonically, cleaned with acetone, and dried for use.
[0054] Using a carbon dioxide laser, under the control of the laser head control system, the laser head scans and remelts the alloy located in the processing area, and the processing condition is oxygen. Among them, a laser device with a laser wavelength of 10640nm, a power of 700W, and a scanning speed of 26mm / s was used.
[0055] Borosilicate glass powder is provided, and the borosilicate glass powder is pressed into blocks, and the glass block is placed on the alloy that has been remelted and sent to the tube furnace for heating. When heating, control the heating rate to 4°C / min, and raise the temperature to 1100°C, keep it warm for 100 minutes, and then lower the temperature. When cooling down, control the cooling rate to 5°C / min until the temperature drops to room temperature.
Embodiment 3
[0057] Provide the kovar alloy that is sealed with the glass, the surface is sanded and polished, the alloy is cleaned ultrasonically, cleaned with acetone, and dried for use.
[0058] Using a semiconductor laser, under the control of the laser head control system, the laser head scans and remelts the alloy located in the processing area, and the processing condition is the atmosphere. Among them, a laser device with a laser wavelength of 880 nm, a power of 30 W, and a scanning speed of 2 mm / s was used.
[0059] Borosilicate glass powder is provided, and the borosilicate glass powder is pressed into blocks, and the glass block is placed on the alloy that has been remelted and sent to the tube furnace for heating. When heating, control the heating rate to 4°C / min, and raise the temperature to 1100°C, keep it warm for 100 minutes, and then lower the temperature. When cooling down, control the cooling rate to 5°C / min until the temperature drops to room temperature.
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Abstract
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