Copper Brazing Rings are specialized components used in brazing processes to join metals, particularly copper and its alloys. These Durable Copper Brazing Rings are designed for convenient application during brazing operations, ensuring a secure and durable bond. Copper-phosphorus solder is a solder based on copper and zinc alloy. It has good fluidity and is suitable for contact brazing, flame brazing, high-frequency brazing and furnace brazing.Copper Brazing Rings improves the wetting ability of the solder. , improve strength and toughness, and lower melting point. Copper-zinc solder is mainly used for flame, high-frequency, resistance and other brazing methods.
| BrazingAlloys | AWS | Chemical Composition（%） | Solidus | Liquidus | Main Uses | |||||||
| Ag | Cu | Zn | Sn | Si | Other | F | ℃ | F | ℃ | |||
| BCu | BCu-1 | / | 100 | / | / | / | / | 1981 | 1082 | 1981 | 1082 | Suitable for furnace brazing of steel, stainless steel and nickel-based alloys. |
| BCu58Zn | / | / | 58 | / | 38 | / | Mn：4 | 1616 | 880 | 1668 | 909 | Mainly used for brazing of hard alloy cutter. |
| BCu60Zn | / | / | 60 | / | 39 | 1 | Si：0.25 | 1634 | 890 | 1661 | 905 | Mainly used for brazing ferrous metals, nickel-based alloys and Cu-Ni alloys; it has good fluidity. |
| BCu58ZnFe | BCuZn-C | / | 58 | / | 40.2 | 1 | Fe：0.8 | 1670 | 910 | 1749 | 954 | |
| BCu48ZnNi | BCuZn-D | / | 48 | / | 41.8 | / | Ni：1 Si：0.2 | 1720 | 938 | 1799 | 982 | |
High sealing
The copper welding ring can form a uniform weld at high temperature through close contact with the metal surface, ensuring the sealing of the connection part. This feature is particularly important in refrigeration systems and pipeline connections, and can effectively prevent gas or liquid leakage.
Excellent strength
The copper welding ring forms a metallurgical bond with the base material during the welding process, and the weld strength is close to or even exceeds the strength of the base material itself. Therefore, it can still maintain stable performance under high pressure and high temperature environment.
Corrosion resistance
Copper itself has good corrosion resistance, especially in humid and chemical medium environments. This makes the copper welding ring suitable for equipment exposed to harsh environments for a long time.
Easy to process
The copper welding ring has good ductility and plasticity, can adapt to various complex connection shapes, and the welding process is simple and efficient.
Environmental protection
The copper welding ring does not require the use of additional flux during the welding process, which reduces the generation of harmful substances and meets the environmental protection requirements of modern industry.
Material selection
Copper welding ring usually uses pure copper or copper alloy as raw material. Copper alloys can add appropriate amounts of other metal elements (such as phosphorus, silver, etc.) according to specific application scenarios to improve welding performance and mechanical strength.
Forming process
Copper welding rings are formed by precision mold processing to ensure their precise size and smooth surface. Common forming processes include stamping, drawing and casting.
Welding process
Copper welding rings are usually welded by flame brazing, high-frequency induction brazing or furnace brazing. During the welding process, the copper welding ring melts after heating, fills the joint gap, and forms a strong bond with the substrate.
Surface treatment
In order to improve the corrosion resistance and service life of copper welding rings, the products are usually oxidized, electroplated or coated with a protective layer.
Quality inspection
Copper welding rings must undergo strict inspections during the production process, including size measurement, weld strength test, pressure resistance test and air tightness test, etc., to ensure that the products meet the standards.
Refrigeration and air conditioning systems
Copper welding rings are widely used in the pipe connections of refrigeration systems and air conditioning equipment. For example, refrigeration compressors, condensers, evaporators and other components all require copper welding rings to ensure sealing and pressure resistance.
Automobile manufacturing
In automobile manufacturing, copper welding rings are used for pipe connections in fuel systems, cooling systems and air conditioning systems. Its high strength and corrosion resistance can meet the use requirements of automobiles under complex working conditions.
Electric and electronic industries
Copper welding rings are also widely used in cable connections of power equipment, radiator connections of electronic components and other fields. Its good electrical conductivity and thermal conductivity can effectively improve equipment performance.
Construction and pipeline engineering
In construction and pipeline engineering, copper welding rings are used for the connection of water heating systems, gas pipelines and heating equipment to ensure the sealing and safety of the system.
Aerospace
The aerospace field has extremely high requirements for the strength and corrosion resistance of materials. Copper welding rings play an important role in aircraft fuel systems, hydraulic systems and air conditioning systems.
Food and pharmaceutical equipment
Due to their good hygiene and corrosion resistance, copper welding rings are used for pipe connections and sealing in food processing equipment and pharmaceutical equipment.
New energy field
In solar energy and hydrogen energy equipment, copper welding rings are used to connect heat exchangers, pipes and tanks. Their high temperature resistance and corrosion resistance can meet the needs of the new energy field.
Petrochemical
In the petrochemical industry, copper welding rings are used to connect pipes, tanks and heat exchangers. Their chemical corrosion resistance and high strength can adapt to complex working environments.
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