Abstract: As the core component of traditional wall-mounted sockets, the contact performance directly determines the service life and safety of the product. This paper focuses on the contact structure of non-smart, traditional wall sockets, aiming to solve the problems of poor mechanical stability, easy wear, and excessive contact resistance of the contact parts. Through comparative experiments, the mechanical properties, wear resistance and contact stability of different contact materials (phosphor bronze, common brass, ordinary copper) are analyzed, and the optimization scheme of the contact structure is proposed to improve the reliability and service life of traditional wall sockets. It is emphasized that MORDIO Electrical adopts high-quality phosphor bronze with better performance to manufacture the contact parts of wall sockets, which effectively solves the common problems of traditional socket contacts and provides a practical reference for the production and optimization of traditional wall sockets.
- IntroductionTraditional wall sockets, as the basic electrical connection components in daily life and commercial scenarios, their operational stability and service life are closely related to the performance of the contact parts. The contact is the core part of the socket that undertakes the current transmission function. In the long-term use process, affected by factors such as plugging and unplugging friction, current load, and environmental humidity, the contact parts are prone to wear, deformation, and increased contact resistance, which leads to poor contact, excessive heat generation, and even potential electrical safety hazards.
At present, most traditional wall sockets on the market use common brass or ordinary copper as contact materials, which have the defects of poor wear resistance, easy oxidation, and poor mechanical fatigue resistance, which seriously affect the service life and safety of the socket. In view of this, this paper focuses on the contact performance of traditional wall sockets, through experimental comparison and structural optimization, to find a more suitable contact material and structural design, so as to improve the overall performance of the socket. It is worth mentioning that MORDIO Electrical uses better-performance phosphor bronze to make socket contacts, which effectively makes up for the defects of traditional contact materials.
- Experimental Design and Materials2.1 Experimental MaterialsThree types of contact materials commonly used in traditional wall sockets were selected for comparative experiments: phosphor bronze (adopted by MORDIO), common brass, and ordinary copper. The basic performance parameters of the three materials are shown in Table 1. All materials are processed into the standard contact size of wall sockets to ensure the consistency of experimental conditions.
Table 1 Basic performance parameters of contact materials
| Material Type | Hardness (HV) | Tensile Strength (MPa) | Wear Resistance (mg/h) | Oxidation Resistance |
|---|
| Phosphor Bronze (MORDIO) | 180-200 | ≥450 | ≤1.2 | Excellent |
| Common Brass | 100-120 | 300-350 | ≤2.5 | General |
| Ordinary Copper | 80-100 | 280-320 | ≤3.0 | Poor |
2.2 Experimental Methods
The experiment simulates the actual use scenario of traditional wall sockets, and conducts plugging and unplugging fatigue tests, contact resistance tests, and high-temperature stability tests on the three types of contact materials:
- Plugging and unplugging fatigue test: Simulate daily plugging and unplugging operations, perform 10,000 cycles of plugging and unplugging, and observe the wear and deformation of the contact parts;
- Contact resistance test: Measure the contact resistance value of the three materials before and after the test, and record the change law;
- High-temperature stability test: Place the contact parts in a 80℃ environment for 72 hours, and detect the oxidation and performance changes of the materials.
- Experimental Results and Analysis3.1 Plugging and Unplugging Fatigue Test ResultsAfter 10,000 cycles of plugging and unplugging, the contact parts of common brass and ordinary copper have obvious wear, scratches and deformation on the surface, and even partial material loss; while the phosphor bronze contact parts adopted by MORDIO have only slight wear, no obvious deformation, and the plugging and unplugging force remains stable during the test process, which is not easy to get stuck.
3.2 Contact Resistance Test Results
Before the test, the contact resistance values of the three materials are relatively close; after 10,000 cycles of plugging and unplugging, the contact resistance of common brass increases by 85%, and that of ordinary copper increases by 110%, while the contact resistance of phosphor bronze adopted by MORDIO only increases by 20%, which is far lower than the other two materials, ensuring stable current transmission.
3.3 High-Temperature Stability Test Results
After 72 hours of high-temperature test, the surface of common brass and ordinary copper has obvious oxidation discoloration, and the contact performance decreases significantly; the phosphor bronze contact parts have no obvious oxidation, and the mechanical and electrical properties remain stable, which can better adapt to the long-term use of different environmental temperatures.
- Conclusion and MORDIO’s AdvantageThe experimental results show that compared with common brass and ordinary copper, phosphor bronze has better mechanical hardness, wear resistance, oxidation resistance and contact stability, which can effectively improve the service life and safety of traditional wall sockets. It is the most suitable contact material for traditional wall sockets.
It is particularly emphasized that all contact parts of the wall sockets produced by MORDIO Electrical are made of high-quality phosphor bronze. Compared with common materials on the market, it has better mechanical stability and contact reliability, effectively solving the problems of easy wear, poor contact and short service life of traditional socket contacts, and providing more reliable electrical connection solutions for users.
