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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004038
EISBN: 978-1-62708-185-6
... Abstract Ribs and bosses are the integral functional elements or features of a forging that project outward from a web in a direction parallel to the ram stroke. This article describes the design, functions, and producibility of ribs and bosses. It relates their design to grain flow...
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Published: 15 May 2022
Fig. 30 Examples of injection-molded bosses More
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Published: 30 September 2015
Fig. 8 Powder metallurgy stainless steel hot exhaust gas oxygen bosses. Courtesy of SSI Technologies More
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Published: 01 January 2002
Fig. 3 Shrinkage porosity at bolt-hole bosses in a ductile-iron cylinder head More
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Published: 01 January 2005
Fig. 1 Specimen forging, illustrating principal types of ribs and bosses. Sectional views are limited to ribs; ribs shown in (a) are drafted, those shown in (b) are no-draft equivalents. Flash or flash extension at parting lines is not shown More
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Published: 01 January 2005
Fig. 3 Conventional forging for an engine mount fitting, with ribs and bosses designed for strength and rigidity. Dimensions given in inches More
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Published: 01 January 2005
Fig. 8 Forgings that illustrate combinations of ribs and bosses. (a) Fuselage bulkhead crown fitting. (b) Rocket fuel injector dome. Dimensions given in inches More
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Published: 01 January 2005
Fig. 11 Conventions for measuring the height and width of ribs and bosses More
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Published: 01 December 2008
Fig. 8 Four bosses isolated from all practical sources of feed metal in this aluminum alloy sand casting (a) were produced to the required soundness by adding minimum ribs (a weight consideration) and conforming chills (b). More
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Published: 01 January 1997
Fig. 19 Design of bosses and studs for MIM parts. Source: Ref 8 More
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Published: 01 January 1997
Fig. 21 Boss designs for plastic parts. A, hollow boss; B, gussetted boss; C, solid boss; D, stepped boss; E, elongated boss More
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Published: 30 September 2015
Fig. 1 Type 304 wrought stainless steel boss sinter brazed to a high-density (7.25 g/cm 3 ) high-temperature-sintered PM 409L flange. (a) 304L boss in 409L flange. (b) Braze filler paste applied to joint. (c) Braze joint. (d) Braze interface (Kalling's etch) 409L (top), 304L (bottom). Source More
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Published: 30 September 2015
Fig. 4 Transition zone between the filler metal and a PM 304L sensor boss (7.0 g/cm 3 density) welded to a wrought stainless steel exhaust pipe. Etched More
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Published: 30 September 2015
Fig. 5 Projection welded PM 409L sensor boss. (a) Projection welded exhaust assembly. (b) Sensor boss with projection. (c) As-polished cross section of an unwelded projection. (d) Etched cross section of the fusion zone. Source: SSI Technologies, Inc. More
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Published: 01 January 1990
Fig. 18 Recommended fillet and corner radii in relation to height of rib or boss More
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Published: 01 January 2005
Fig. 4 Forging for a nozzle boss fitting used in a rocket engine. As shown, draft angles are measured from the direction of the ram, which in this instance is vertical. Dimensions given in inches. More
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Published: 01 November 1995
Fig. 53 Boss requirements (self-tapping screw). D 1 and D 2 are very dependent on screw size. More
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Published: 01 November 1995
Fig. 7 Typical screw boss design for thread-cutting screws. 25.4 mm = 1 in. Screw size Diameter d , in. D , in. 6 0.123 0.140 8 0.145 0.166 10 0.167 0.189 12 0.191 0.219 1 4 in. 0.220 0.250 More
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Published: 01 December 2008
Fig. 13 Dross Boss unit with 70 kg (160 lb) of hot dross capacity serving a well on a reverberatory melter. The average recovery of metallics is +50% on the weight of dross and flux charged, and the recovered metal is returned in molten form to the well. More
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Published: 01 December 2008
Fig. 11 An undercut created by an isolated boss on the side of a sand casting requires either a core as in (a) or continuation to a flange as in (b). Absence of a flange as in (c) requires continuation of the boss to the parting line as in (d). More