Precious Metal Brazing

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1. Characteristics of Precious Metal Brazing

As an electric shock material, the common feature of precious metals is that the brazing area is small, and the brazing metal is required to have good impact resistance, high strength, a certain degree of oxidation resistance, and can withstand arc attack, but does not change the characteristics and components of the contact material Electrical properties.

Because the area of electric shock brazing is limited and the solder overflow is not allowed, the brazing process parameters should be strictly controlled. Most heating methods can be used to braze precious metal contacts. Flame brazing is often used for larger contact components; induction brazing is suitable for mass production; resistance brazing can be carried out with an ordinary resistance welding machine, but a smaller current and a longer brazing time should be used. The carbon block serves as the electrode. When a large number of contact components need to be brazed at the same time or multiple contacts are brazed on one component, furnace brazing can be used. Precious metals are brazed in the atmosphere by ordinary methods. The obtained joints are of poor quality, and vacuum brazing can obtain high-quality joints, and the properties of the material itself will not be affected in any way.

2. Product Details

Precious metals mainly refer to materials such as Au, Ag, Pd, Pt, etc. They have good electrical conductivity, thermal conductivity, corrosion resistance and high melting temperature, and are widely used in electrical equipment to manufacture open and closed circuit components.

Product	Precious Metal Vacuum Brazing Furnace
Parameter	Furnace tube size: outside diameter 180 / inside diameter 170 / length 600mm
	Furnace tube material: quartz
	Dimensions：about D820/W1300/H1700mm
	Equipment weight：550Kg
	Equipment power：18Kw
	Electrical connections：three phase 380V
Capacity	Material tray layer No.：4 layers
	Material tray openings:equipped on demand
	CNGA1204 about 400Pcs/furnace
Temperature	Max. temperature：1000℃
	Long-term using temperature：≤900℃
	Temperature control accuracy：±1℃
	Heating area：200mm
	Heating element：Infrared heating tube
	Temperature control method: 30 segment PID program temperature control
	Temperature measuring element: N type thermocouple
	Cooling method: water cooling
Vacuum	Mechanical pump
	Molecular pump
	Ultimate vacuum：3.0*10-4Pa cold, empty furnace 15min
	Digital vacuum gauge：1.0*105～1.0*10-5Pa
Electric	Control Center: 10-inch LCD touch screen
	PLC
Safety	Ultra-light sound and light alarm and power off
	Equipment bottom support: Foma wheel, can be removed or fixed

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.