In order to adapt to more and more demanding working conditions, the requirements of the connector for the conductive elastic material are getting higher and higher, so the latter is urgently required to greatly improve the performance.
In order to solve this problem, the following three methods are commonly used abroad:
1 Under the premise of not reducing or reducing the conductivity of the alloy, by adding a small amount of alloying elements, the deoxidation effect during alloy smelting is improved, and the alloy properties are fundamentally improved.
2 Further improve the existing process system of the alloy, or adopt a new process - deformation heat treatment to improve the strength, elasticity, heat resistance and other properties of the alloy.
3 Surface treatment and new surface treatment process to greatly improve the performance of the alloy.
Deutsche Bank is a conductive elastic material widely used abroad. The contact spring of the integrated circuit connector of Texas Instruments is used in this material; the button switch shrapnel of the French company Isos Dart is also used in this kind of German silver-silver bimetal.
In recent years, foreign countries have vigorously carried out research on modified alloys of brass, phosphor bronze, copper and German silver and other new conductive elastic alloys, and have achieved certain results.
First, the improved alloy of brassThe United States Cheers Brass and Copper Co., Ltd. recently developed a high-strength copper-zinc alloy: "CHASE 69000" 0 its nominal composition is: Cu 73.3%, Zn 22.7%, A13.4%, Ni 0.6% . American A123 battery connector, the alloy's strength level exceeds all phosphor bronze and some are copper. It is ideal for conductive springs, relays, switches, circuit fuses, clamps, wiring devices, high-strength housings, bellows connectors, and other electrical and electronic equipment.
Second, the improved alloy of phosphorus copper1. Boron copper. In foreign countries, a boron-containing copper alloy with excellent mechanical properties, good electrical conductivity and low cost has been proposed. It is compared with tin phosphor bronze
2. KFC alloy. Recently, Japan has proposed a copper alloy dedicated to electronic components called "KFC". This alloy is formed by adding a trace amount (0.1%) of iron to dephosphorus copper, and the strengthening is obtained by uniformly depositing fine iron phosphide in the crystal. It is suitable for many applications such as wires, connectors, posts, connectors and heat sinks.
3. CUNIP alloy. It is an age hardened copper alloy containing Ni 1.1%, P0.25% and the balance being Cu. After age hardening, the alloy has high strength, exceptionally high electrical conductivity and thermal conductivity. Can be used as connectors, contact springs, fuse springs and tube parts.
Third, the improved alloy of copper1. Copper alloy 175. It is an age-hardened iron-copper alloy with high electrical conductivity, high thermal conductivity and high strength in the age hardening state. The alloy also has high fatigue strength and creep strength. It is an ideal material for making conductive springs, support springs, switch and relay parts, line switch blades and collector rings.
25 alloy. It is a new type of high strength copper alloy. Its chemical composition is: 1.8^-2.0%, drilling nickel.
Microsoft Surface charger have 4 types. For Surface Pro 1/2/3/4.
Surface Pro 1/2: 12V 3.6A
Surface Pro 3: 12V 2.58A
Surface Pro 4: 15V 1.6A
Microsoft charger has different connector with other Laptop Adapter. Its connector is magnetic tip.
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