OEM Custom Resistance Spot Welding Electrode Caps Exporters, Factories
Product Description
Made-to-print female electrode caps for resistance spot welding, built around your shank interface, weld-face geometry, sheet stack, and production requirements. Sunmy manufactures CuCrZr, CuCr, and other specified copper-alloy caps from 2D/3D drawings or benchmark samples, with CNC turning, post-forming finish machining, deburring, cleaning, and project-defined surface treatment available.
Automotive Body-in-White (BIW), robotic resistance spot welding, galvanized and high-strength steel sheet assembly, HVAC and electrical enclosures, white goods, and precision sheet-metal joining.
Precision Turned Parts / Finish-Machined Copper Components. Prototype, pilot, and repeat-production supply can be configured to the customer drawing and annual volume.
| Parameter / Specification | Standard Scope / Options Available | Engineering Notes |
|---|---|---|
| Product Name | Custom Resistance Spot Welding Electrode Caps | Female caps and related electrode components made to drawing or approved sample |
| Primary Process | CNC precision turning / post-forming finish machining / deburring & cleaning | Manufacturing route selected to geometry, alloy, and annual volume |
| Material Grades & Temper | CuCrZr (C18150), CuCr (C18200), dispersion-strengthened copper, and other specified copper alloys | Material and temper are controlled to the customer print; C18150 is widely used in RWMA Class 2 electrode applications |
| Material Property Control | Conductivity and hardness per selected alloy / temper and agreed inspection plan | No single hardness or conductivity value is applied across every copper grade |
| Tip Face Geometry | Flat / domed / radius / truncated cone / offset / custom profile | Face diameter, nose angle, and dressing allowance defined by drawing |
| Female Taper / Mounting | ISO 5821:2025 / ISO 1089-compatible female taper or customer-specific interface | Taper fit can be verified by agreed gauge or dimensional method |
| Dimensional Envelope | Fully custom to 2D/3D drawing or benchmark sample; common electrode-cap sizes supported | No catalog-size restriction for new OEM programs |
| Critical Tolerances | OD, taper, runout, and weld-face geometry to drawing; ±0.02 mm and tighter features subject to review | VMM / CMM / dedicated gauges available according to the inspection plan |
| Surface & Cleaning | Bare copper, anti-tarnish protection, and optional plating where specified | Deburred and cleaned; packaging matched to oxidation and cosmetic requirements |
| Quality Documentation | Dimensional report, material certificate, hardness / conductivity / coating checks as specified | Inspection scope and sampling level agreed before production |
| Supply Scope & Customization | Prototype samples, pilot batches, repeat orders, and scheduled releases | 100% custom manufacturing from 2D drawings, 3D models, or approved physical samples |
Built Around Your Welding Process
Instead of forcing a catalog cap into an existing welding gun, Sunmy can adjust the taper, OD, overall length, face diameter, nose angle, radius, and access clearances around the customer shank, sheet stack, and dressing strategy.
Process Route Matched to Cost & Metallurgy
Machined-from-stock and formed-preform plus finish-machining routes can be reviewed against volume, alloy, and geometry. The selected route is documented in the quotation so purchasing can compare tooling cost, recurring price, and technical risk on the same basis.
Repeatable Fit & Weld-Face Geometry
Critical taper, runout, and nose geometry are controlled to the approved drawing. Consistent fit supports repeatable seating on the electrode adaptor; actual weld quality and cap life still depend on current, force, cooling, sheet coating, maintenance, and dressing conditions.
OEM / ODM Custom Manufacturing Support
Sunmy can manufacture electrode caps together with related turned copper components, adapters, shanks, brackets, and custom fixtures when included in the project scope. Each item is quoted with its material, inspection, finishing, and supply boundary clearly identified.
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