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Research draft

welding

vr.tr.welding · ACT.ACT

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.

Thing Registry Activities and processes

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

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.

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.

It can be 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

What it looks like

A welder with a torch, arc or machine producing a molten joint; a finished weld bead.

How it is recognised

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

Related models

is a kind of - in registry terms

joining

is a kind of - in registry terms

process

includes - the most common family

arc welding

is contrasted with - which does not melt the base metal

brazing

In practice

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

Identifiers

ISO 4063 process numbers

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

Also called

gas metal arc weldingWelding processPipeline weldingStructural weldingProcess piping weldingPressure piping weldingTank weldingAerospace weldingNozzle weldplastic weldingforge weldingelectric weldingsubmerged arc weldinginduction weldingfriction stir weldingexplosion weldingkeyhole weldingelectroslag weldingspot weldinghyperbaric weldingmirror weldinggas pressure weldingwelding in spaceflux weldingflash weldingdiffusion weldingelectron beam weldingshot weldingprojection weldingDiffusion bondingFriction stud weldingExtrusion weldingHot gas weldinglaser welding of polymersElectrofusion weldingoxy-fuel weldingfriction weldingbutt weldingMicrowave weldingSpin welding

+14

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Understand What welding is.

Science.

Definition

Definition and families.

Definition

Definition.

  1. What is welding, and what process families exist? definition
  2. Is the process welding, brazing, soldering or mechanical joining? boundary

Metallurgy

Weld metallurgy.

Metallurgy

Metallurgy.

  1. What happens in the weld pool and heat-affected zone, and how do defects arise? definition
  2. Which entry fits the specific process? action
Practice Standards and qualification.

Regulation.

Standards

Standards.

Standards

Standards.

  1. What standards govern procedures, qualification and inspection? provenance
  2. Is the question about a safety-critical weld, which needs qualified procedures and welders? boundary

Applications

Application fields.

Applications

Applications.

  1. What is specific to structural, pipeline and pressure piping welding? provenance
  2. Which references are standard? provenance
Safety Safety.

Regulation.

Hazards

Hazards.

Hazards

Hazards.

  1. What hazards does welding present, and what controls apply? provenance
  2. Which entry fits welding safety? action

Inspection

Inspection and testing.

Inspection

Inspection.

  1. How are welds inspected and tested, including non-destructive methods? provenance
  2. Which entry fits non-destructive testing? action
Context History and trade.

Context.

History

History.

History

History.

  1. How did welding develop from forge welding to modern processes? provenance
  2. Which entry fits the history of welding? action

Trade

The welding trade.

Trade

Trade.

  1. How are welders trained and certified, and what do labour statistics show? provenance
  2. Which sources are cited? provenance

What the second pass must settle

  • 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?
Draft as JSON