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- Xref: sparky sci.engr:1981 sci.engr.mech:268
- Path: sparky!uunet!gatech!darwin.sura.net!dtix!oasys!hanners
- From: hanners@oasys.dt.navy.mil (Robert Hanners)
- Newsgroups: sci.engr,sci.engr.mech
- Subject: Re: Green Sand
- Message-ID: <24560@oasys.dt.navy.mil>
- Date: 3 Sep 92 18:06:56 GMT
- References: <1992Sep3.154810.27739@umr.edu>
- Reply-To: hanners@oasys.dt.navy.mil (Robert Hanners)
- Followup-To: sci.engr
- Organization: Carderock Division, NSWC, Annapolis, MD
- Lines: 20
-
- In sci.engr, quopingl@cs.umr.edu (Quo-Ping Lin) writes:
- >Hi Netters:
- >Got a question for everybody. In sand casting, people conventionally call
- >the sand as "green sand." Dose anyone knows where the word "green" came
- >from? It looks black for me.
-
- I'll take a crack at this although it's been 30 years since I've been
- exposed to the topic. As I recall, "green-sand" is sand containing a small
- amount of clay and moisture to permit packing and provide some strength.
- The term "green" thus refers to new or not fully processed. "Dry-sand",
- on the other hand, is sand and linseed oil or other resins that is packed,
- then dried and/or baked to give much stronger properties such as needed
- for cores.
-
-
- -- Bob
-
- ------------------------------------------------------------------------------
- Robert J. Hanners "My comments; only mine." *DIASTOLE* 676673
- CD, NSWC, Annapolis, MD hanners@oasys.dt.navy.mil
-