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of successful completion of the learning module
Max Mustermann (sample person — specimen document)
| Module | Resistance spot welding (6 chapters — foundations + 5 technical chapters, 71 practice questions) |
| Final examination | 25 questions, drawn at random server-side across all six chapters |
| Pass threshold | 60 % — identical to the course practice threshold |
| Result (sample) | 84 % — passed |
| Completion date (sample) | 2 August 2026 |
| Recommended refresher (sample) | by 2 August 2028 — 24 months after completion (recommendation, not an obligation) |
| Examined scope | see annex “Training and examination scope” (page 2, an integral part of this certificate) |
This document records the state of knowledge as of the date stated. A refresher after 24 months is recommended.
This document was generated automatically and is valid without a signature. Its authenticity is evidenced not by a signature but by the verification ID: every issued certificate can be checked online with it (only validity, issue date and module are displayed — no personal data).
A learning offer of the KI-Ingenieur Academy — not a formal proof of competence in the sense of an accredited personnel certification and no substitute for qualifications required by codes (e.g. operator examinations to DIN EN ISO 14732). The document may be kept in the operator's quality management system as a record of training and of its effectiveness; its suitability for that purpose is assessed by the company. Learning content broadly follows recognised codes of practice; created with AI assistance and technically reviewed by humans. — SAMPLE: this specimen is not a valid document.
Max Mustermann (sample person — specimen document)
Certificate WA-MUSTER-0000 · completion (sample): 2 August 2026 — this annex is valid only together with the matching front page.
Module resistance spot welding — content status: 2 August 2026. This annex is an integral part of the certificate and records which content was trained and examined.
Definition of welding (distinction from other joining processes per DIN EN 14610) · the three pillars of weldability following the ISO 14731 system (material weldability, possibility of welding, service reliability) · carbon and hardening, the heat-affected zone · cold and hot cracks · the carbon equivalent (CEV/CET) with a worked example · steel classes to EN 10020.
Placing spot welding among the welding processes (pressure welding to EN ISO 857-1, reference number 21 to EN ISO 4063) · heat generation by the resistance principle (Q = ∫ I²·R dt) · bulk and contact resistances · formation and characteristic values of the weld nugget · nugget and weld diameter with the √t rules of thumb · programme phases squeeze, weld and hold time.
The weldability lobe (process window) and its limits · practical determination · influence of material, coating and cap condition · current, force and time in interplay · programme forms from single pulse to pre- and post-heating · shunting and spot spacing.
The weld diameter as the governing quality characteristic and its measurement · failure modes (plug, interface, mixed failure, stuck weld) · destructive and non-destructive test methods from shop floor (roller mandrel, chisel) to laboratory (tensile shear, cross tension) · limits of process monitoring.
Electrode materials as a trade-off between conductivity and hot strength · cap designations to ISO 5821 · wear mechanisms mushrooming and alloying up · electrode life and dressing concepts (initial, in-process, final dressing).
The four types of loading and their design implications · the design band of the nugget diameter · unequal sheet thicknesses and the equivalent sheet thickness · flange widths, edge distances and drawing entries · the order of precedence from drawing to code of practice.
Learning content broadly follows recognised codes of practice; the standards named serve orientation. Created with AI assistance and technically reviewed by Christian Arnoldi, welding engineer. — SAMPLE: this specimen is not a valid document.