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Project Introduction: Silver‑Contact Dual‑Medium‑Frequency Welder

Sep 10,2026

Silver contacts are core conductive contact components for relays, contactors and low‑voltage electrical apparatuses. Silver contacts and copper bases form dissimilar‑metal welded structures with great differences in melting‑point and thermal‑conductivity, and the contacts are tiny in volume. Conventional welding easily causes thermal deformation of workpieces, contact offset, cold joints, uneven fusion, crushed contacts and unstable resistance. The Haifei silver‑contact dual‑medium‑frequency welder is specially developed for dual‑station simultaneous‑welding conditions of silver contacts for low‑voltage electrical apparatuses, delivering stable conductive performance.

I Customer Background and Pain Points

One customer focuses on the supporting production of various silver‑contact assemblies, moving‑static contacts and switch conductive accessories for low‑voltage electrical apparatuses.

Production pain points of the original welding process:

1.Workpiece deformation, contact offset and flatness deviation tend to occur, resulting in switch jamming during make‑and‑break and poor fitting.

2.Conventional welding has limited stability of heat input and pressure application. Tiny contacts are prone to crushing, burning, carbon accumulation and spatter.

3.Welding strength and resistance parameters vary greatly; process data can hardly be traced.

II Customer Requirements

1.Steadily control welding temperature and pressure to reduce contact erosion, crushing and sheet‑metal deformation.

2.Optimize welding uniformity and unify weld‑spot strength and resistance parameters.

3.Improve process‑data recording function and support parameter storage and traceability.

III Custom‑Developed Solutions

Targeting customer requirements, the dedicated R&D team repeatedly tuned and optimized schemes in view of dissimilar‑metal welding difficulties of silver contacts, to ensure deliverables fit customer demands. Details are as follows:

1.Process verification: Conduct multiple groups of exclusive dual‑point medium‑frequency welding process tests for silver contacts of different specifications.

2.Equipment selection: Adopt special‑purpose dual‑welder for silver contacts. It adapts to differences in material and dimension of contacts and improves uneven welding quality. Narrow heat‑affected zone effectively protects tiny contacts and reduces crushing, burning and spatter.

3.Structural design: Dual welding heads run smoothly with precise pressure application. Custom‑built exclusive tooling for silver‑contacts addresses the characteristic that tiny contacts tend to shift and deviate, reducing dislocation, uneven gaps and eccentric force‑bearing.

4.Core Advantages

Good welding effect: deformation‑resistant, damage‑free.

Stable performance: uniform resistance, reliable quality.

Efficient & stable: stable operation, high productivity.

IV Delivery, After‑Sales Service and Customer Feedback

Pre‑acceptance and equipment inspection were completed. Continuous trial operation maintains stable welding pass rate. After commissioning, all original welding‑related production pain points of the customer are fully resolved. Timely, professional and thoughtful after‑sales service earns positive customer comments.

V Haifei’s Mission of Meeting Customized Customer Demands

Haifei adheres to the philosophy of “Creating Value for Customers”. All work starts from customer requirements. What are your specific welding requirements? Do you need automation, integration or complete production‑line solutions? Please inform us, and Haifei will carry out targeted equipment R&D and customization for you.

Wuxi Haifei Intelligent Equipment Co., Ltd. https://www.haifeiwelder.com/

Wuxi Haifei Intelligent Equipment Co., Ltd. has been focusing on the R&D and production of special‑purpose welding machines for 17 years. The company has obtained ISO9001 Quality Management System Certification, China Compulsory Certification (3C) and CE Certification. It is a National High‑tech Enterprise, a Specialized, Refined, Differential and Innovative Enterprise of Jiangsu Province, a Specialized, Refined, Differential and Innovative Enterprise of Wuxi, and a Gazelle Enterprise in the Southern Jiangsu National Self‑Dependent Innovation Demonstration Zone.

Should you be interested in our special‑purpose machines, please contact us: 400‑0510‑750.