As is known, the copper parts in the household socket are the key components to ensure smooth current and reduce heat generation. The high-quality household sockets are made of high-quality copper parts, which are resistant to oxidation, toughness, thick copper and less riveted. They are the four indicators of the quality of socket copper.
1. The thickness of the copper piece is increased, and the current passing capacity is improved to reduce the resistance of the copper piece itself;
2, strong toughness, especially applied to the socket socket part, not easy to deform. Even if the socket is used for a long time, it can maintain a proper clamping force, ensuring that the socket is tightly coupled with the plug to reduce arcing;
3, anti-oxidation, no rust, reduce the increase in resistance and heat caused by rust;
4, less riveting, preferably a whole piece of copper, further reducing the riveting part of the broken and rivet heating.
In the past, the use of brass as a current-carrying part of the socket was the mainstream; now, the current-carrying part of the brass piece is still the last, and the quality is affirmative. The appearance of brass is bright yellow, excellent electrical conductivity, soft texture, wear resistance but not good performance in terms of oxidation resistance and toughness (elasticity). After long-term use of brass, the surface of the copper piece will be oxidized and rusted, and the color will become darker, which will increase the contact resistance. After repeated insertion and removal, the brass piece will have poor toughness and severe deformation, often failing to take power, or due to poor contact. The formation of an electric arc does not guarantee safe use of electricity.
At present, the mainstream sockets use tin phosphor bronze as the copper material. The appearance of tin-phosphorus bronze alloy is purple-red. The biggest feature is its high fatigue resistance, strong elasticity, excellent corrosion resistance and oxidation resistance. Even after long-term use, the surface will not be oxidized and corroded, the insert will not be deformed, and the proper clamping force will always be maintained.
Consider the thickness of the copper piece. If you can't open the product for visual inspection, you can use the simple hand weight. The more the copper parts are used, the heavier the weight of the socket.
The big brand socket products basically use tin-phosphorus bronze as the current-carrying part, so as to ensure the normal service life of the socket for more than 12 years. The good socket generally adopts the integrated socket copper piece, and uses the continuous mold process to select the high-quality tin phosphorus. The copper high-precision belt is formed at one time to avoid excessive riveting points, reduce the resistance of the material itself, reduce the breakage of the riveting part and the heat of the rivet, and fundamentally eliminate the impact of the riveting point on the quality, and the safety performance of the socket is large. Increase in range.
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