ONLINE ARTICLE
IDENTIFYING CASTING DEFECTS A faulty casting has arrived at your
facility’s door. You’re not exactly sure what’s wrong with it. You call your metalcaster and tell
the quality control manager you’ve got an issue. When she wants to know more, you’re stumped. Below are descriptions of defect types and their correct terminology. 1. Your iron casting has folded, shiny fi lms in its walls. Defect: Lustrous Carbon—These folded or wrinkled fi lms are distinctly outlined and found within the walls of iron castings, causing a linear discontinuity in the structure. The defects form when materials from mold or core additives and binders volatize, decompose and become entrained in the melt. 2. Upon x-ray, you observe a
CONNECT WITH US Like:
MetalCastingDesign.com
BLOG ROLL The defect shown here is lustrous carbon.
cavity in the middle of your casting. Defect: Axial Shrinkage—All metal shrinks as it solidifi es. Axial (or centerline) shrinkage, most often plate-like in shape, occurs when the metal at the center of the casting takes longer to freeze than the metal surrounding it.
Read more at
MetalCastingDesign.com.
POLL QUESTION The November/December
website question asked: Which rapid manufacturing method do you use most often?
28% Join:
Metal Casting Design & Purchasing
Follow: @Metal_Castings
28% 24% 8%
Download: The Metalcasting Newsstand app for your iPhone or iPad
4% OTHER
This month’s question is available at
MetalCastingDesign.com.
Casting’s Passion Manufacturing is defi nitely seeing a sense of revival in the mainstream media in pop culture with television shows like Made in America and How It’s Made. Another example is Sailor Jerry Spice Rum’s production of a series of digital short videos called Hold Fast in which it profi les “craftsmen of different stripes.” The Hold Fast videos made their debut on Nov. 21, by profi ling the fi rst fi ve craftsmen, including Paige Tooker, owner of New York Art Foundry. This copper-based investment casting shop is one of only a handful of metalcasters in New York City.
Thankful for Castings 3-D MOLD PRINTING CNC MACHINED TOOLING
CNC MACHINED MOLDS MACHINED HOG-OUTS
8% SLA/SLS PATTERNS
Without metalcasting, the world would not be where it is today. Our intern shares timeline items of casting. 1. The oldest casting in existence is a frog made in 3200 B.C. Cute is not a word heard often in the metalcasting industry, but I think the frog is a cute reminder of the simplistic artful beauty of castings. 2. The fi rst movable cast lead type for printing presses was created in the 1400s and changed communication around the world.
Visit
MetalCastingDesign.com to read the full blogs and additional entries.
Jan/Feb 2012 | METAL CASTING DESIGN & PURCHASING | 3
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64