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rough blanks

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Image
Published: 01 January 2006
Fig. 11 Layouts for rough blanks More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
...-forming operations, namely, rectangular blank, rough blank, partially developed blank, and fully developed blank. It concludes with a discussion on the process capabilities, applications, and limitations of fine-edge blanking and piercing. blanking cam piercing conventional piercing...
Image
Published: 01 January 2005
Fig. 24 Rough-turned blank for a firing pin (top) and pin that was produced from the blank by swaging (bottom). Production rate increased more than 200% when the pin was produced by turning and swaging rather than by turning alone. 3140 steel, 85 to 90 HRB. Dimensions given in inches More
Image
Published: 01 January 2006
Fig. 1 Effect of punch-to-die clearance per side (as a percentage of stock thickness, t ) on characteristics of edges of holes and slugs (or blanks) produced by piercing or blanking low-carbon steel sheet or strip at a maximum hardness of 75 HRB. Table 1 lists clearances for producing More
Image
Published: 01 January 2006
Fig. 2 Effect of punch-to-die clearance per side (as a percentage of stock thickness, t ) on characteristics of edges of holes and slugs (or blanks) produced by piercing or blanking low-carbon steel sheet or strip at a maximum hardness of 75 HRB. Table 1 lists clearances for producing More
Image
Published: 01 January 2005
Fig. 12 Typical procedure for the forging of a gear blank and hub in open dies, featuring the use of a bolster. Dimensions in figure given in inches Stock preparation Cold sawing Stock size 203 × 203 × 197 mm (8×8×7 3 4 in.) Stock weight 64 kg (140 lb) Forging More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... classifications: Rectangular blanks Rough blanks Partially developed blanks Fully developed blanks These types of blanks are described in more detail in the section “Blanking Operations” in the preceding article “Blanking and Piercing” in this Volume. This classification of blanks has...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005118
EISBN: 978-1-62708-186-3
... such as conventional trimming dies and cam trimming dies. It provides information on rough and finish trimming and construction details of trimming dies. The article reviews the selection criteria of presses for a trimming operation. It provides a discussion on the scrap and material handling processes in trimming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005110
EISBN: 978-1-62708-186-3
...-blanked parts are listed in Table 5(a) and ( Table 5(b) ). Cutting-edge quality consists of surface roughness, surface integrity, and allowable tearing level. The achievable surface roughness of a fine-blanked part is R a 3.6 to ∼0.2 μm; generally, surface roughness is R a 2.5 to ∼0.63 μm...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... strength stock thickness transfer dies PIERCING is the cutting of holes in sheet metal, generally by removing a slug of metal, with a punch and die. Piercing is similar to blanking, except that in piercing the work metal that surrounds the piercing punch is the workpiece and the punched-out slug...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006425
EISBN: 978-1-62708-192-4
... 2 ). Both tool and sheet have surface roughness, and if they are pressed against each other, adhesion can occur. If lubricant is applied at the tool-sheet interface, lubricant is able to separate (lift) both surfaces, avoiding adhesion. The separation distance of both surfaces depends...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002127
EISBN: 978-1-62708-188-7
... and PCBN products. Fig. 7 Microstructures of four sintered polycrystalline products. (a) Syndite PCD. (b) Syndax3 PCD. (c) Amborite PCBN. (d) DBC50 PCBN Product Formats It is possible not only to change the formulation but also to make PCD and PCBN blanks in many different formats. Figure...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005154
EISBN: 978-1-62708-186-3
.... Inasmuch as all portions of a blank are not formed equally, some regions staying completely unformed, the surface roughness is not constant over the product surface. Planar surfaces are always undeformed; thus, the surface roughness in such regions remains the same as the surface roughness of the original...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006526
EISBN: 978-1-62708-207-5
.... Closed-end containers, such as toothpaste tubes, are formed in this manner. Multiple-station tooling , which involves a series of separate dies arranged so the rough blank is made into a preform, which proceeds through successive operations until the required form is produced. Transfer presses...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005121
EISBN: 978-1-62708-186-3
... by a process in which a flat blank is constrained by a blankholder while the central portion of the sheet is pushed into a die opening with a punch to draw the metal into the desired shape without causing wrinkles or splits in the drawn part. This generally requires the use of presses having a double action...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009074
EISBN: 978-1-62708-177-1
... of pressure. The mounted specimen can then be ground and polished as described in the article, “Rough Grinding and Polishing,” in this Volume. Preparation of other metallic honeycomb-cored composites will benefit from this technique as well as thin-walled ribbed composite structures. Fig. 1 Mounted...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
...-carbon steels metal thickness surface finish FABRICATION of sheet products includes various forming operations such as press forming, press bending, press-brake forming, stretch forming, and deep drawing. Fabrication of sheet products may also include cutting operations, such as blanking, trimming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005104
EISBN: 978-1-62708-186-3
... on the punch side surface. Fig. 2 Schematic of the shearing process. (a) Side view of cut edge. (b) Torn edge with less than optimum clearance. (c) Blankholder for fine blanking The resulting cut surfaces are neither perpendicular nor very smooth—at best, peak-to-valley roughness ( R t...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002145
EISBN: 978-1-62708-188-7
.... Shear cutting operation proceeds from roughing (a) to intermediate (b) to finishing (c) operations The shear cutting head is mounted in a fixed position, and the gear blanks are pushed through the head. Cutting tools are fed radially into the head, a predetermined amount for each stroke, until...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
.... Two processes involved: chemical milling, chemical blanking Fine abrasive particles carried in a high velocity gas stream are used to machine and grind materials Equipment Chemical milling: Large or small, thick parts; masking facilities, corrosion resistant processing tanks and fixtures, vented...