MODERN CASTING .COM
LinkedIn Discussion Best Diecasting Die Base?
On the Foundry and Diecaster Network on LinkedIn, a member asked, “Which one is better for a diecasting die base, steel or cast iron? Why? Does the weight of the die effect this?” Below are excerpts of some of the discussion points:
“Cast steel is always better because it has the structural stability and strength against the compression load acting on the die base. Forged steel is another option but expensive. SG Iron 600/3 also can be an option because it is better than cast iron. A fi nal choice is malleable steel. If cost permits to have the prehardened steel base, then use P20.” —Surianarayanan C.
“A die base (or bolster) has the important function to support the hardened inserts, allowing a cushion to ensure square bed-out (or matching). So for small dies with a small tonnage force used on them, cast iron is sometimes used, but it is not ideal. It is a low-cost solution for low usage. For larger dies which fi t on DCMs of 250t and up, it is ESSENTIAL to have the elasticity and tensile strength of P20 (1.2311) steel. This will protect the expensive hardened inserts. ” —John C.
Join the discussion. Visit
moderncasting.com for a link to the Foundry and Diecaster Network.
Editor’s Note: MODERN CASTING does not necessarily endorse the views expressed in the discussion.
POLL QUESTION
The February website question asked: How would
exporting natural gas affect the
metalcasting industry?
This month’s question is available at
www.moderncasting.com.
73% NEGATIVELY,
ENERGY PRICES WILL GO UP.
19% 8%
IT WOULD NOT AFFECT THE INDUSTRY MUCH AT ALL.
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Follow: @AmerFoundrySoc
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POSITIVELY, IT WOULD MEAN
MANUFACTURING JOBS. BLOG ROLL
Manufacturing Has Been Here the Whole Time
It’s not hard to fi nd an article about manufacturing’s return to the U.S. But to borrow a turn of phrase from the musician Prince, whoever is claiming they are bringing manufacturing back; manufacturing never left.
The attention to the industry is nice, and policies being set in place during this push for American manufacturing have been a long time coming. But one of the struggles of manufacturing/met- alcasting has been to recruit qualifi ed, dedicated workers.
Manufacturing is not a startup
company, nor is it an industry on its last legs. When talking with your peers, the media or students, here are some facts to keep on hand:
• The U.S. metalcasting industry employs more than 200,000.
• The U.S. is the global leader in casting application and ranks second in casting production.
• The U.S. produces 12 million tons of castings annually at a value of more than $30 billion.
• Metalcasting has been an important facet of American manufacturing since before the Declaration of Independence was signed.
It doesn’t hurt to add facts about your own facility—how long has it been in business? What do you make? Who do you employ? How many of those receive benefi ts? Manufacturing is having a resur- gence in public opinion. Let’s remind the public of manufacturing’s longevity.
— Shannon Wetzel, Senior Editor March 2013 MODERN CASTING | 5
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