Talk:Sand casting

message: Does any have a problem with me moving this article to Sand casting? I just feel as though the title is very awkward, and I've never heard it called that in industry. Plus, google gives 260,000 hits for "sand molded casting", and 2,700,000 hits for "sand casting". --Wizard191 (talk) 12:11, 26 May 2008 (UTC)
replies: text: Normal practice is to use the commonly-used term. Here it also avoids the 'incorrect' spelling of the middle word... :o)  -- EdJogg (talk) 00:29, 27 May 2008 (UTC)
replies: text: I support the move to Sand casting.  "Sand molded casting" implies that the article would be about the casted part, and not the process.  Also, "Sand casting" is the accepted terminology. Iepeulas (talk) 15:44, 1 June 2008 (UTC)
replies: text: I have notified the guy who moved the article  from Sand casting to Sand molded casting and invited him to let us know why he prefers the latter title.Iepeulas (talk) 15:59, 1 June 2008 (UTC)
replies: text: The guy who moved the article to Sand molded casting had no objections, so I moved the article to Sand casting.Iepeulas (talk) 00:06, 2 June 2008 (UTC)
thread_title: Requested Move

message: The first thing that popped into my mind when I saw this article was a scene in the recent Iron Man movie when the character Tony Stark uses Sand-Casting during his captivity to begin building his Mech Suit. Is this or other instances useful to note on this page to highlight its function? --Epynephrin (talk) 15:27, 18 June 2008 (UTC)
replies: text: No, encyclopedia articles are not the place for such trivia. L0b0t (talk) 21:56, 18 June 2008 (UTC)
thread_title:  Pop Culture References 

message: The author is incorrect when he says that all binder systems that are not green sand are called, "air set".  Air Set is a specific system that uses a furfuryl alcohol binder.  The binder is mixed with the sand and when exposed to the air, sets up in a few minutes of time.  In a mold or core box, the exposed surface will set first.  This makes stripping the mold relatively easy if the surface is not complex or deep.  A complex or deep surface may collapse as the box is stripped or you may have to wait an inordinate amount of time for it to cure.  Air set has largely been replaced by other binder systems.  A big reason for that is that furan is toxic to aquatic life and will quickly require that you file a form R with the EPA if your foundry decides to use it.  There are many binder systems, each with it's own strong points.  In the industry, what the author calls "air set" is referred to as "chemically bonded sand".  That goes for molds and cores.  The term "no-bake" is the preferred term if the chemical binder is indeed not baked. That term, no-bake, is because the main binder system used before air set was to mix sand, linseed oil (later MDI), flour, water and clay to produce a mold that was soft when packed into the boxes, yet relatively strong.  It was stripped out soft and then baked to become hard.  Those cores and molds were called, "hard core" or "baked" molds.  They were still in common use up to the early 90's.
The author speaks of synthetic and bank sand but is really too vague in his explanation to have someone understand the terms.  These are green sand classifications.  Bank sand / natural bonded sand is sand that already has a clay content which was a result of the natural process that placed that sand, such as a river deposited sand.  A good bank sand has between 3 and 5 percent clay.  The foundryman only needs to add water and mix.  A synthetic sand is sand that does not naturally have a binder in it or from which the binder has been stripped.  Synthetic sand may start with lake sand or a sand such as the St. Peters sandstone which is an Ordovician aged sand that is likely a beach sand deposited in salt water.  It also encompasses sands that are made of crushed rock, such as olivine or which are benefacted sands.  That is to say, sands that have specific minerals in them concentrated to make a product, such as zircon, staurolite  or chromite.  Graphite sand and ceramic sands are also synthetic sands when they have binders added to them.  They are synthetic in that they are not naturally occurring and need other binder materials blended with them to produce a satisfactory green sand.  Synthetic sand allows the use of binders like western bentonite clay which does not naturally occur mixed with sand, to be used without other, less strong clay.
The author is obviously not very familiar with green sand when he states that the coarseness of the surface denotes green sand.  Green sand that is properly mixed and molded can give a cast metal surface that will shine.  On the other hand, chemically bonded sands frequently yield coarse surfaces because the sand needs to be coarse to limit binder consumption and limit gas defects from the burning of the binder.  No-bake shops also typically grind up the used chemically bonded sands and blend them with a percentage of new sand to limit consumption of sand.  If the sand could only be used once then the cost of sand and disposal would be cost prohibitive.  This ground up used sand is typically pretty coarse in nature because the old binder is not removed.  Green sand does not need to be crushed after use.  The metal drys out the water and the sand collapses.  It is reactivated by adding water and mulling. If the sand is fine grained and both properly mixed and molded, green sand competes with plaster in finish. 
I don't know when sand molding came into existence but molding machines came into existence long before 1950.  I think that you have to define partially-automated.  In the 1950's, fully automated molding machines were in existence.
70.88.124.61 (talk) 17:58, 6 April 2010 (UTC)
thread_title:  Terminology clarification 

message: I think the two article should be merged, they cover, more or less, the same topic.  I don't think I've heard sand called molding sand but I have heard casting sand. Iepeulas 13:01, 5 August 2007 (UTC)
replies: text: I have merged the Green Sand into the molding sand category as green sand is a type of molding sand and there isn't enough info to justify two articles.Iepeulas (talk) 00:47, 21 January 2008 (UTC)
thread_title: Merger with [[Green sand]]

message: I think each type of sand should be listed as a different article and in the molding sand page there may be a little bit info in general about molding sand basics and links to various types of it. Pushkraj.janwadkar (talk) 10:17, 16 June 2009 (UTC)
replies: text: Right now there just isn't enough information to warrant separate articles. That's why green sand was merged into this article awhile ago (as you can see in the section above). If, at some point there is enough info to warrant separate articles, it can then be split off. In the mean time I suggest you just create individual sections for each type within this article. Wizard191 (talk) 16:35, 16 June 2009 (UTC)
thread_title: Different pages for each sand type

message: It seems as though silica sand should not redirect to one use of the material.  As an alternative, why not redirect silica sand to silicon dioxide?  Silica redirects to silicon dioxide, but not silica sand.
Vance.scotty (talk) 14:54, 15 May 2014 (UTC)
thread_title:  Why Does "Silica Sand" Redirect Here? 

message: The percentages stated regarding the contents of greensand. Is it by weight or volume?
Please remove this section when this has been clarified.
Thanks
//Marcus  — Preceding unsigned comment added by 62.65.125.252 (talk) 10:33, 27 July 2014 (UTC)
thread_title:  Green sand 

message: Pattern-makers are able to produce suitable patterns using "according to the percentage of extra length needed).
This sentence has become garbled: the quotation marks are opened and not closed and the bracket is closed but not opened. Any idea what it should mean?  — Preceding unsigned comment added by 82.27.181.141 (talk) 10:08, 26 May 2017 (UTC)
replies: text: A careless edit must have done that. Wait a week, then the sentence can be removed, unless someone wishes to peruse the article history and fix it.--Quisqualis (talk) 22:44, 26 May 2017 (UTC)
replies: text: Checked a few revisions, found the previous version of the sentence. The information was rewritten into the preceding and following sentences, but the editor failed to completely remove the sentences they were replacing. With the garbled sentence removed all information is still contained in the paragraph, only without the use of confusing parenthetical sentence structure. If interested, the edit was performed January 10, 2017. Matthias Alexander Jude Shapiro (talk) 18:27, 8 June 2017 (UTC)
thread_title:  Garbled sentence