About the project
A non-commercial welding handbook. No shop, no affiliate links, no advertising for training centres — just the technical information you need at the bench.
What you will find here
The handbook is organised the way a question actually arrives. You are setting up a machine and need a current: the parameters section and the calculators answer that. The weld came out porous: the defects section explains why, and what changes it. The inspector asks for a certificate: the standards section explains what EN ISO 9606-1 covers and what it does not.
The English version exists because the standards do. EN ISO 9606-1, EN 1011-2, ISO 5817 and ISO 2553 are published in English, and on international sites the procedure specifications are written in English too. Where the American system differs — AWS A2.4 symbols, AWS D1.1 acceptance criteria — the difference is spelled out rather than glossed over.
Where the numbers come from
Coefficients and limits in the calculators are taken from standards and from consumable data sheets: EN 1011-2 for preheat, ISO/TR 18491 for thermal efficiency, ISO 5817 for quality levels, EN ISO 9606-1 for the qualification range, EN ISO 6848 for tungsten electrodes. The source is named on each page so that the result can be checked by hand.
Where a figure is empirical rather than normative — loss factors, arc-on time shares, typical settings — it is labelled as such. A number that cannot be traced to something is worth less than no number at all.
Everything published here is for reference. Final welding parameters are set by the welding procedure specification and the material certificate, and the right to make a weld comes from a qualification, not from a website.
Six languages, not six translations
The site is written in Polish, Russian, Ukrainian, Romanian, English and Spanish. These are parallel versions rather than translations of one another: the standards are the same European ones, but the terminology, the customary designations and the practical questions differ from language to language. A page that has no version in your language simply does not appear in that language's menu — the language switcher in the header shows where a version exists.
Found a mistake?
Write through the contact form. Corrections to figures and tables are especially welcome: a technical handbook stays alive because somebody checks it.
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