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Partial Joint Penetration Groove Weld combined with Fillet Weld (Matching Electrodes) Tr = o x ((An x Fu)^2 + (Aw x Xu) ^2)^.5 Depth of chamfer = C + 3 Length = L mm An = nominal area of fusion face normal to Tr = C x L = Aw = Area of effective throat = D/2^.5 x L = Fu = 450 MPa Xu = 490 MPa Figure 3b Tr = 381 kN 0.45 0.49 mm fillet. The 3 mm is required to compensate for an effective throat code reduction for a 45° bevel (figure 3b). This combination is applicable for a Tee joint where the Tee stem is in longitudinal shear (i.e., the line of force is along the axis of the weld). Conservatively, this could be applied to lines of force at angles to 900 with the weld axis. However, when the stem is in tension (i.e., the angle η = 900), applying CSA S16-01, Clause 13.13.3.3, the tensile resistance of a partial joint penetration groove weld combined with a fillet weld would be more economical (figure 3a). The evolution of structural joint design has progressed from forging to riveting, to bolting, to high-tensile bolting, to combinations of bolting/welding, and to welding only. Today, welding is a mature science that has resulted in stronger, lighter more economical structures, and has also expanded the imagination, scope and creativity of engineers and architects. Elegant structures are now routinely designed that are only possible through the use of welded joints. The artistic canopy shown at the beginning of this article is an example of artistic imagination that relies on welded joints. Neil A. Paolini, P. Eng., works at ProWeld Engineering. 14 Canadian Welding Association Journal • Summer 2010 S16.1 300W; 350W; 300WT EXAMPLE Clause 13.13.3.3 L = 100mm D = 10mm C = 10mm 1000 mm^2 707 mm^2 Replacing Large Fillet with Equal Resistance Combination Fillet and Chamfer Chamfer = 50% large fillet leg size (+ 3 mm for LOP in root) Combination Fillet = 50% large fillet size Tr = 0.67 x Aw x Xu Single Large Fillet Effective Throat ET1 = 2D/2^.5=1.414 D Combination Chamfer + Fillet Chamfer =2D/2 +3 = Effective D Effective Throat ET2 = Chamfer face = D X 2^.5 = 1.414D ET1 = ET2 Combination weld has same resistance as large fillet, with 50% of the weld metal. Figure 3a 3mm de 13 mm (10 + 3) chevauchée par une soudure d’angle de 10 mm. Le 3 mm est requis pour compenser la réduction de la gorge efficace pour une préparation de 45 º exigée par le code (figure 3b). Cette combinaison s’applique aux assemblages en T lorsque celui-ci subit un cisaillement longitudinal (c.-à-d., la ligne de force se trouve le long de l’axe de la soudure). En demeurant conservateur, cela pourrait s’appliquer aux lignes de force à des angles allant jusqu’à 900 par rapport à l’axe de la soudure. Cependant, lorsque l’assemblage en T est sous tension (c.-à-d., que l’angle η= 900), selon l’article 13.13.3.3 de la norme CSA S16-01, la résistance à la traction d’une soudure sur préparation à pénétration partielle combinée à une soudure d’angle serait plus économique (figure 3a). La conception des joints de structure a évolué du forage au rivetage, au boulonnage, au boulonnage à haute traction, au boulonnage et soudage combiné et finalement, au soudage seulement. Aujourd’hui, le soudage est une science avancée qui a produit des structures plus fortes, plus légères et plus économiques et élargi l’imagination, le champ d’application et la créativité des ingénieurs et des architectes. Les structures élégantes maintenant conçues de façon régulière ne sont possibles que grâce aux assemblages soudés. La structure illustrée au début de cet article est un exemple d’imagination artistique qui repose sur des assemblages soudés. Neil A. Paolini, ing., travaille chez ProWeld Engineering. C Tr D Fusion Face D/2^0.5 NOTE: Depth of chamfer is C + 3 due to 3mm LOP on 45 degree bevel Tr D+-3 D o 45 SAMPLE JOURNAL ET D+3 D 2D
A JOB DONE RIGHT. This is the promise Titan Contracting has given its customers for more than 30 years. With a superior tank and vessel operation, as well as highly reputable mechanical and power divisions, Titan credits its continued success to providing its skilled craftsmen with only the best tools and products available. That’s why Titan uses Stoody Nickel Flux Cored Wires. “Since we’ve replaced solid MIG wires such as Alloys 625 and C276 with Stoody’s Nickel Flux Cored Wires, productivity and quality improvements have been significant. They advance our ability to automate, eliminating the chance of human error,” says Tank Division Manager, Darrell Jones. “It replaces any conventional welding wire because of its ‘all position’ capabilities.” As one of the leading fabricators and erectors of FGD Scrubber Systems in the nation, Titan has used Stoody Nickel Flux Cored Wires to tackle tough welds on absorbers and wet electrostatic precipitators (WESPs). “We rely on Stoody for speed, productivity and quality,” says Jones, “and Stoody’s customer support is far superior to any of the other specialty alloy wire companies we have tried in the past.” DARRELL JONES Tank Division Manager Titan Contracting & Leasing, Inc. Owensboro, KY titancontracting.com Titan Contracting carries the torch – will you? THERMADYNE, a global cutting and welding leader, joins the American Welding Society in encouraging individuals to practice the art, craftsmanship and professions of welding, metalworking and fabrication. Victor, Thermal Dynamics, Thermal Arc, Arcair, Tweco, Stoody, Cigweld and TurboTorch are among the Thermadyne family of brands that you can count on for safety, reliability and quality. SAMPLE JOURNAL 2070 Wyecroft Road, Oakville, Ontario L6L 5V6 | Customer Care Tel: 905-827-4515 | Customer Care Fax: 1-800-588-1714 | e-mail: canadacs@thermadyne.com www.thermadyne.com
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Output control at up to 400 ft without a cord! - The Canadian Welding ...

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