LINKEDIN DISCUSSION DIE CASTING VS. SAND CASTING
On the Metal Casting Desing and Purchasing LinkedIn discussion board, a member asks: “Which is better, die casting or sand casting? Comparing cost, production and pricing product to market.” Below are exerpts from some of the discussion points:
“It depends on your production needs, quantity, design and aesthetic wishes. For offi ce furniture, I generally advise die casting. The investmnet cost is higher but the product price is lower and many different surface
treatments are possible.” -Berry M., Owner at Ningbo Alumess Import Export Company Ltd.
“Another alternative is permanent
mold casting. It is similar to die casting in that it is made in a metal mold like die casting, but not injected under high pressure. Typically, it is poured and uses gravity as the means to fi ll the mold. Tooling is less expesive than die casting but more than a sand cast pattern. Part price ia also between die and sand casting.” -John M., OEM, B2B Sales
“Production quantity is usually the
determining factor with die casting. It will determine if your tooling cost will be
worth the discounted piece price.” -Mike B., Sales Engineer at Dynacast
“It depends on quality
standards and order volume. Die casting has a higher cost for mold, but high effi ciency in production. Also, die casting has a smoother
surface fi nish.” -Tony Z., Independent Mechanical or Industrial Engineering Professional
“(1) Die casting cost is lower than sand casting during mass production; (2) Sand casting molding is typically lower than die casting anywhere; (3) Die casting
quality is higher than sand casting.” -Jason X., Sales Mgr. at Showling Industrial Group Ltd.
“If the casting can be made by
green sand, it is a better option— cheap, fast and bulk production.”
-Geethamohan S., Free Lance Consultant for SG & 7
Editor’s note: Metal Casting Design & Purchasing does not necessarily endorse the views expressed in LinkedIn discussions. Visit
metalcastingdesign.com for a link to the Metal Casting Design & Purchasing Network.
BLOG ROLL
That Must Be One Big Cup of Coffee
The “Viseum” in Wetzlar, Germany,
is featuring a 7.5-ft. cast bronze, nickel-plated spoon—the largest utensil manufacturer WMF has ever produced. The sculpture is designed to highlight the refl ections and optical distortions of looking into a polished bowl of a spoon. The original
CAD data was adjusted to the required size and transferred to a voxeljet VX1000 printer, which produced a plastic model of the spoon’s bowl. The model was produced in approximately 10 hours from thousands of 0.00591-inch (0.15 mm) layers selectively glued together. The large build space of the
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machine made it possible to print the bowl in one piece at 33.5 x 16.4 x 7.5 inches (850 x 416 x 192 millimeters). The unpacking process, during
which excess material is removed from the model, was followed by a stiffening process using artifi cial resin and subsequent fi nishing. This method did away with the construction of a negative mold, resulting in signifi cant cost and time savings. The printed model was used to quickly generate a sand mold that was cast in bronze. —Denise Kapel, senior editor
Read all of the full blog posts on
metalcastingdesign.com.
Sept/Oct 2012 | METAL CASTING DESIGN & PURCHASING | 3
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