Distributor contact

Abstract

The invention discloses a distributor contact which is characterized in that the distributor contact is composed of three different metal layers, namely, a tungsten metal layer, a copper metal layer and an iron metal layer; the surface of the tungsten metal layer is provided with two slots which are distributed in a 'cross' shape, and the 'cross' slots are uniformly distributed on the surface of the tungsten metal layer; the metal layers are connected together through welding; and the distributor contact is coated with a layer of isolated conductive heat insulation coating. According to the invention, the 'cross' slots are arranged in the surface of the contact, and the contact has a simple structure and is easy to operate. Among metals, tungsten has the highest melting point, has good heat conduction, electrical conduction and electron emission performances and is not easy to soften, copper has excellent ductility and corrosion resistance, makes welding firmer and further enhances the conductive ability, and iron has high melting point and high thermal conductivity and facilitates heat radiation. The surface of the contact is coated with the isolated conductive heat insulation coating, which can achieve good isolation and heat insulation effects and improve the utilization rate.

Description

technical field [0001] The invention relates to an alloy component, in particular to a distributor contact. Background technique [0002] The so-called contact refers to the switch of the electrical appliance. The mechanical action to form the switch to close the circuit is called a contact, while the thyristor and transistor are used as switching devices to make the circuit on and off. It is called a non-contact. [0003] Distributor is a component in the ignition system that controls the on-off of the primary circuit in a timely manner, and distributes sparks to the spark plugs of each cylinder in sequence. Distributors are mainly used in traditional ignition systems and ordinary electronic ignition systems, and these two ignition systems have basically been eliminated. The current automobile engine basically cancels the distributor, which is called a distributor-less microcomputer-controlled ignition system. [0004] During normal use, the contacts will generate arcs du...

AI Technical Summary

Problems solved by technology

[0004] During normal use, the contacts will generate arcs due to continuous switching on and off of the current. The arcs will ablate the contacts and increase the temperature of the contacts. If the contact temperature is not well dissipated, it will Further accelerate the ablation of contacts and the shedding of copper alloy

[0005] At present, the contacts used for distributors on the market, during the working process of the distributor, the temperature of the contacts is relatively high, and the general metal materials have low melting points and are easy to soften. Although some precious metals have high melting points, their prices are also high, which cannot be satisfied. Large-scale product application

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