Feedthrough Vacuum Brazing

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Alumina Ceramic to Metal Seal Vacuum Feedthrough For High Pressure Brazing

1. Ceramic to metal seal

The ceramic surface used for brazing must be metalized.

Compared with glass seals, ceramic seals have excellent heat resistance, mechanical shock resistance, and corrosion resistance. Although it requires more complicated manufacturing processes and complicated engineering, the price is obviously higher.

Material	Alumina/BeO/AlN
Coating Layer	Mo/Mn Thickness:8-30μm
Plated Layer	Nickel, Copper, Gold, etc. Thickness: 2-9μm
Treatment	Glazed, polishing
Dimension	Customized

2. The advantages of ceramic metal seals

* Stronger, durable airtight seal and better electrical insulation.

* Used in more severe conditions, such as high and low temperature (low temperature), corrosive, high pressure and high vacuum environments.

* High mechanical strength, less fracture when applied to high vibration and high gravity load conditions.

* Demonstrates strong bonding with metals and alloys (such as copper and copper alloys (CuNi) and nickel and nickel alloys) and excellent sealability.

3. Brazing Process Parameters

Spec\Model	RHVB-H446	RHVB-H557	RHVB-H669	RHVB-H7710
Effective Hot Zone Size (W*H*L)	400*400*600mm	500*500*700mm	600*600*900mm	700*700*1100mm
Load capacity	250Kg	400Kg	600Kg	1000Kg
Heating Power	75Kw	90Kw	150Kw	270Kw
Max.temperature	1350°C	1350°C	1350°C	1350°C
Temperature Uniformity	±5°C	±5°C	±5°C	±5°C
Vacuum degree	4 *10-3Pa/6 *10-4Pa	4 *10-3Pa/6 *10-4Pa	4 *10-3Pa/6 *10-4Pa	4 *10-3Pa/6 *10-4Pa
Pressure Rising Rate	≤0.65(Pa/h	≤0.65(Pa/h	≤0.65(Pa/h	≤0.65(Pa/h
Cooling Pressure	2Bar/6Bar/10Bar	2Bar/6Bar/10Bar	2Bar/6Bar/10Bar	2Bar/6Bar/10Bar

Shanghai Geheng Vacuum Technology Co., Ltd. is a vacuum heat treatment furnace manufacturer with many years of experience in design, manufacturing and production. Mainly produce vacuum heat treatment furnace, vacuum sintering furnace, vacuum brazing furnace, New Energy And Environmental Protection Equipment and Vacuum Carbonization Furnace .Provide customized services, equipment work area can be based on customer output.