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Material and surface treatment of pin pin
Pin pins are widely used. Various electronic components, connectors, transformer inductors, electronic switches, modular power supplies, automotive new energy, aerospace accessories, medical equipment and other products will be guided by pin pins. So there are many metal materials, how to choose the material of the socket? How about the surface treatment?
pin pinWidely used, various electronic components, connectors, transformer inductors, electronic switches, modular power supplies, automotive new energy, aerospace accessories, medical equipment and other products will be guided by pin pins. So there are many metal materials, how to choose the material? How about the surface treatment?
1. Pin Jack Material
Mostpin pinThey are all processed by elastic copper rods with good conductivity. The surface is gold-plated and silver-plated to achieve low contact resistance and corrosion prevention.
Copper rod is a non-ferrous metal processing rod with good processing performance. It is mainly divided into brass rods (copper-zinc alloy, relatively cheap), copper rods (high copper content), aluminum bronze rods, tin bronze rods, silicon bronze rods, beryllium bronze rods, brass bronze rods, cupronickel bronze rods, copper rods, tungsten copper rods and oxygen-free copper rods.
General specifications 1.0-200 meters, length 2500-6000 meters.
pin pinCommon materials for pins are as follows:
H59 is cheap. High strength, high hardness, good plasticity, can still work normally under pressure at high temperature, and has average corrosion resistance.
The average copper content of H62 brass is 62%, which has good mechanical properties, good thermal plasticity and good cold plasticity. Good machinability, easy to weld, but also prone to corrosion cracking. Compared with, it is harder in the greenhouse, so it can be used for parts that bear heavy loads.
C54400 phosphor bronze contains lead, which has good workability and cold workability. C54400 phosphor bronze shall not be used as bearings, bushings, gears, shafts and other parts. Features: good machinability, no burrs, good cold workability.
Qsn4-3 are used in the manufacture of springs and other elastic elements. Chinese named tin bronze. Features: high wear resistance and elasticity, good diamagnetism. It can be well processed by hot pressing or cold pressing. In the hard state, it has good workability and easy weldability. It has good corrosion resistance in the atmosphere, fresh water and sea water.
2.pin pinsurface treatment method
Terminals Taiwan is an important part of the electronic components industry. It is not difficult for electronic engineers to find that most of the terminals Taiwan are coated with a special coating, so what is its significance and existence? The coating can not only protect the terminal station, reduce environmental corrosion, improve the durability and wear resistance of the terminal station, but also help to establish and maintain the stable impedance of the terminal station in terms of electrical performance.
1. The coating has oil or foreign matter, which cannot be completely removed after electroplating, resulting in no electroplated layer.
2. The substrate is slightly easy to peel off. After electroplating, under the action of an external force, the coated double skin falls off and the substrate is exposed.
3. After electroplating, under the action of large external force, the coating and the substrate fall off.
4. After electroplating, more particles will be generated on the surface. When the particles are removed by external force, the appearance of the substrate or primer coating will be exposed.
Humidity is too high, resulting in corrosion spots.
1. The coating and the substrate, including the coating and the substrate, should have a good binding force.
2. The coating on the main surface of the part should have a relatively uniform thickness and a detailed structure.
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