Welded Joints in Cold Worked Sheet Metals

Big strength, indispensable for special manufacturing, maintenance for cracked & weared elements, productive, can be easily automated with robots, advantageous shapes can be designed from deflection & strength point of view

Only for certain materials, warpage due to high local heat concentration, after-welding process needed, no damping effect, non-destructive control of the joint is cost effective

A welding joint in metalworking is a point or edge where two or more pieces of metal or plastic are joined together with the same materials, formed by welding according to a particular geometry.

<p>The purpose of non-destructive control of welded joints is to ensure cost effectiveness in assessing the joint's quality.</p> Signup and view all the answers

<p>MMA, MIG, TIG, FCAW, SAW, SMAW, Resistance welding, Forge welding, Friction welding, Induction welding</p> Signup and view all the answers

<p>Butt joint, lap joint, strap joint, corner joint</p> Signup and view all the answers

<p>Weld metal is molten and solidified during welding, contains filler material, and may have different chemical composition, while HAZ is not melted but heated and cooled, contains significant filler material, and has similar chemical composition to parent metals.</p> Signup and view all the answers

<p>Use materials with high weldability, minimize the number of welds, avoid shaping parts based on casting or forging, use standard components, select the proper location and sequence of welding</p> Signup and view all the answers

<p>Avoid joints near peak stress points, avoid joint lines crossing, place joints far from cold-bent sections</p> Signup and view all the answers

<p>Placing joints at peak stress points, crossing joint lines, welding near cold-bent sections without sufficient clearance</p> Signup and view all the answers

<p>It is strong, reliable, and cheap, but requires rework at metal sheets.</p> Signup and view all the answers

<p>It has poor quality, double weld metal, more material, and additional bending.</p> Signup and view all the answers

<p>It resembles a riveted joint, has big load capacity, quadrant weld metal, more material, and no additional bending.</p> Signup and view all the answers

<p>There are several types with varying load capacity and complexity, but may require additional rework.</p> Signup and view all the answers

<p>It undergoes phase change during welding.</p> Signup and view all the answers

<p>It remains solid and its width can be controlled.</p> Signup and view all the answers

<p>Ensure homogenous load distribution, avoid impact and peeling effects, increase glueing surface, and avoid additional load cases.</p> Signup and view all the answers

<p>One-way joints can carry approximately twice the load of reverse-way joints if their Young's moduli are the same.</p> Signup and view all the answers

<p>The stress congestion factor is introduced to describe stress peaks on joint edges, which can lead to failures.</p> Signup and view all the answers

<p>It can be reduced by utilizing one-way lap joints, short joints, soft glueing material with rigid substrates, and varying cross sections.</p> Signup and view all the answers

<p>The stress congestion factor (α) is the maximum stress divided by the average stress.</p> Signup and view all the answers

<p>They improve stress distribution by tapering the joint sections, using scarf joints, glueing belt ends, and reinforcing with tapered substrate endings.</p> Signup and view all the answers

<p>Incorrect designs may lead to unsatisfactory performance or failure.</p> Signup and view all the answers

<p>It is known as soldered joint formation.</p> Signup and view all the answers

<p>Advantages include good electrical conduction, sealing ability, and short assembly time.</p> Signup and view all the answers

<p>Disadvantages include relatively small load carrying capacity and high surface preparation costs.</p> Signup and view all the answers

<p>They are common in vessel base, pipe attachment to sheet metal, beam attachment to sheet metal, shaft attachments, and sheet metal to sheet metal applications.</p> Signup and view all the answers

<p>Soldering variations are commonly used in machinery, plumbing, and electronics industries to join various materials.</p> Signup and view all the answers

<p>Skew connections</p> Signup and view all the answers

<p>Viscoelastic bonding effect</p> Signup and view all the answers

<p>Normal and transverse planes, including λ⊥, λII, τII, τ⊥, τ⊥√τ⊥² + λII² − λ⊥λII + 3(τ⊥² + λII²), and σö</p> Signup and view all the answers

<p>Below</p> Signup and view all the answers

<p>Viscoelastic bonding effect</p> Signup and view all the answers

<p>Welded joints</p> Signup and view all the answers

<p>Corner joints</p> Signup and view all the answers

<p>An apex point</p> Signup and view all the answers

<p>Tension forces</p> Signup and view all the answers

<p>No heat affected zone, no alteration in material, small amount of space and weight required, sealing and corrosion resistance, damping effect, no pre-drilling of metal sheets</p> Signup and view all the answers

<p>Long preparation time, need for preparation of surfaces, potential requirements for pressing machines and cleaning machines, sensitivity to high temperatures, aging, sensitivity to ultra violent and oxidation of the air, potential release of harmful gases during processing and recycling</p> Signup and view all the answers

<p>By smearing both surfaces and then pressing them together</p> Signup and view all the answers

<p>Glue material, kind of substrates, operation conditions, geometry of the glueing gap, load case</p> Signup and view all the answers