{ "model": { "rank": 3794, "code": "thing-q131172", "model_id": "vr.tr.welding", "name": "welding", "purpose": "Let an agent explain welding as a joining process and its families, relay standards, qualification and safety, identify applications such as structural and pipeline welding, and distinguish welding from brazing, soldering and mechanical joining.", "family": "Thing Registry", "category": "Activities and processes", "status": "research-draft", "kind": "thing", "plane": "ACT", "domain": "ACT.ACT", "industry": "", "version": "", "url": "/models/thing/q131172/", "tier": 2, "score": 82, "payload": { "layer": "wikidata", "aliases": [ "gas metal arc welding", "Welding process", "Pipeline welding", "Structural welding", "Process piping welding", "Pressure piping welding", "Tank welding", "Aerospace welding", "Nozzle weld", "plastic welding", "forge welding", "electric welding", "submerged arc welding", "induction welding", "friction stir welding", "explosion welding", "keyhole welding", "electroslag welding", "spot welding", "hyperbaric welding", "mirror welding", "gas pressure welding", "welding in space", "flux welding", "flash welding", "diffusion welding", "electron beam welding", "shot welding", "projection welding", "Diffusion bonding", "Friction stud welding", "Extrusion welding", "Hot gas welding", "laser welding of polymers", "Electrofusion welding", "oxy-fuel welding", "friction welding", "butt welding", "Microwave welding", "Spin welding" ], "aliasCount": 54, "merged": 54, "knownIn": 82, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q131172", "url": "https://www.wikidata.org/wiki/Q131172", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T00:04:25Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q131172", "registryId": "vr.tr.welding", "name": "welding", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "ACT.ACT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q131172/", "model": { "registry_id": "vr.tr.welding", "name": "welding", "purpose": "Let an agent explain welding as a joining process and its families, relay standards, qualification and safety, identify applications such as structural and pipeline welding, and distinguish welding from brazing, soldering and mechanical joining.", "definition": "A fabrication process that joins materials, usually metals or thermoplastics, by melting the parts and often adding a filler to form a strong joint on cooling, using heat sources such as electric arcs, gas flames, electrical resistance, lasers, electron beams, friction and ultrasound; welding processes are classified by heat source and shielding, are applied in structural, pipeline and pressure piping work, and require qualified procedures and welders.", "what_it_is_for": "Joining materials permanently.", "affordances": [ "explain process families", "relay standards and qualification", "relay safety", "distinguish from other joining" ], "distinguishing_features": [ "Fusion of base material", "Many heat sources", "Qualified procedures", "Inspection and testing" ], "appearance": "A welder with a torch, arc or machine producing a molten joint; a finished weld bead.", "visual_identification": [ "Joining by melting and fusing", "Arc, gas, resistance, laser, friction and other processes", "Brazing and soldering join without melting the base metal; bolting and riveting are mechanical" ], "physical_properties": [], "families_and_kinds": [ "arc welding including gas metal arc welding", "gas welding", "resistance welding", "laser and electron beam welding", "friction and ultrasonic welding", "plastic welding", "application fields: structural, pipeline, process and pressure piping welding" ], "related_models": [ { "relation": "is a kind of", "target": "joining", "why": "in registry terms" }, { "relation": "is a kind of", "target": "process", "why": "in registry terms" }, { "relation": "includes", "target": "arc welding", "why": "the most common family" }, { "relation": "is contrasted with", "target": "brazing", "why": "which does not melt the base metal" } ], "identifiers": [ { "scheme": "ISO 4063", "value_or_pattern": "process numbers", "note": "" } ], "standards_and_regulation": [ "ISO and AWS welding standards", "Welder and procedure qualification standards", "Pressure equipment and pipeline codes", "Occupational safety rules" ], "failure_modes_and_hazards": [ "Weld defects and structural failure", "Burns, arc eye, fumes and fire", "Unqualified welding of safety-critical items" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What welding is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition and families.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is welding, and what process families exist?", "kind": "definition" }, { "text": "Is the process welding, brazing, soldering or mechanical joining?", "kind": "boundary" } ] } ] }, { "id": "metallurgy", "name": "Metallurgy", "description": "Weld metallurgy.", "findings": [ { "id": "metallurgy-finding", "name": "Metallurgy", "description": "Metallurgy.", "questions": [ { "text": "What happens in the weld pool and heat-affected zone, and how do defects arise?", "kind": "definition" }, { "text": "Which entry fits the specific process?", "kind": "action" } ] } ] } ] }, { "id": "practice", "name": "Practice", "description": "Standards and qualification.", "rationale": "Regulation.", "layers": [ { "id": "standards", "name": "Standards", "description": "Standards.", "findings": [ { "id": "standards-finding", "name": "Standards", "description": "Standards.", "questions": [ { "text": "What standards govern procedures, qualification and inspection?", "kind": "provenance" }, { "text": "Is the question about a safety-critical weld, which needs qualified procedures and welders?", "kind": "boundary" } ] } ] }, { "id": "applications", "name": "Applications", "description": "Application fields.", "findings": [ { "id": "applications-finding", "name": "Applications", "description": "Applications.", "questions": [ { "text": "What is specific to structural, pipeline and pressure piping welding?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Safety.", "rationale": "Regulation.", "layers": [ { "id": "hazards", "name": "Hazards", "description": "Hazards.", "findings": [ { "id": "hazards-finding", "name": "Hazards", "description": "Hazards.", "questions": [ { "text": "What hazards does welding present, and what controls apply?", "kind": "provenance" }, { "text": "Which entry fits welding safety?", "kind": "action" } ] } ] }, { "id": "inspection", "name": "Inspection", "description": "Inspection and testing.", "findings": [ { "id": "inspection-finding", "name": "Inspection", "description": "Inspection.", "questions": [ { "text": "How are welds inspected and tested, including non-destructive methods?", "kind": "provenance" }, { "text": "Which entry fits non-destructive testing?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "History and trade.", "rationale": "Context.", "layers": [ { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did welding develop from forge welding to modern processes?", "kind": "provenance" }, { "text": "Which entry fits the history of welding?", "kind": "action" } ] } ] }, { "id": "trade", "name": "Trade", "description": "The welding trade.", "findings": [ { "id": "trade-finding", "name": "Trade", "description": "Trade.", "questions": [ { "text": "How are welders trained and certified, and what do labour statistics show?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should each process family be a separate entry?", "How should standards be linked?", "The registry entry has merged aliases naming a process and application fields; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a welding, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain welding as a joining process and its families, relay standards, qualification and safety, identify applications such as structural and pipeline welding, and distinguish welding from brazing, soldering and mechanical joining.", "characteristics": { "substance": "activity", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: gas metal arc welding, Welding process, Pipeline welding, Structural welding, Process piping welding, Pressure piping welding, Tank welding, Aerospace welding, Nozzle weld, plastic welding, forge welding, electric welding.", "54 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 82 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a welding, and on what evidence are they told apart?" ], "whatItIsMadeOf": "something that happens over time", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "gas metal arc welding", "Welding process", "Pipeline welding", "Structural welding", "Process piping welding", "Pressure piping welding", "Tank welding", "Aerospace welding", "Nozzle weld", "plastic welding", "forge welding", "electric welding" ] } ], "standing": "Described in 82 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 54 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one welding from another, and a welding from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a welding sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a welding from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a welding passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a welding between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a welding, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a welding is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "process-and-outcome", "name": "Process, inputs and outcome", "description": "How a welding proceeds, what it needs and what it leaves behind.", "rationale": "An activity is known by its steps and its results, and both have to be recordable while it is still running.", "layers": [ { "id": "steps-and-sequence", "name": "Steps and sequence", "description": "The steps of a welding, their order and what may run in parallel.", "findings": [ { "id": "steps-and-preconditions", "name": "Steps, preconditions and completion", "description": "What has to be true before each step of a welding and what marks it done.", "questions": [ { "id": "steps-and-preconditions-q01", "text": "What identifies and describes a step of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "steps-and-preconditions-q02", "text": "Who or what asserted this about a step of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "steps-and-preconditions-q03", "text": "What may an agent decide or do once a step of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "inputs-and-results", "name": "Inputs, resources and results", "description": "What a welding consumes and what it produces.", "findings": [ { "id": "inputs-and-outputs", "name": "Inputs, outputs and side effects", "description": "The resources a welding takes and the results it leaves, wanted or not.", "questions": [ { "id": "inputs-and-outputs-q01", "text": "What identifies and describes the inputs and results of a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "inputs-and-outputs-q02", "text": "Who or what asserted this about the inputs and results of a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "inputs-and-outputs-q03", "text": "What may an agent decide or do once the inputs and results of a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What welding is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of welding are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is welding operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of welding and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of welding?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as welding?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a welding came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a welding and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a welding is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a welding, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a welding, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a welding is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }