Talk:Metal casting

Untitled
Personally I think Casting should point to Casting (performing arts). I'd never heard of iron casting until I got to this page. I don't know how others feel about that. 67.181.63.245 7 July 2005 21:31 (UTC) This is a ludicrous suggestion - metal casting has been in existence since about 4000 B.C. - it is one of the most important processes in manufacturing.
 * Casting as a term applied to founding metals existed before casting as a term applied to the performing arts. If a fisherman was looking for casting he might have been surprised, too.  Why don't you write a disambiguation page?  Mfields1 12:52, 4 September 2006 (UTC)

This page majorly plajorizes this site: http://www.abdiecasting.com/WhatIsDieCasting.html -Quodfui
 * The material added by 85.101.82.209 has now been removed. See Revision as of 01:56, 16 March 2006 85.101.82.209 (→Centrifugal casting) &mdash; Graibeard(talk) 06:50, 18 March 2006 (UTC)

I added a dispute to the Cooling Rate section showing comparisons between sand casting and die casting. In my opinion, the first statement is true. However the next two paragraphs would seem to show a bias towards diecasting to someone who has experience with no or little experience with casting processes. The reference to a Pillings Bedworth Ratio is questionable because this has never been used in any casting research. It seems to give the section some credibility but no references are cited. The Pillings Bedworth Ratio has to do with corrosion and oxide formation and does not relate grain size of metal and strength. The writer should have referenced Chvorinov's Law first to help the reader understand the relationship between cooling rate and other factors. No mention is made of the use of chills other casting processes, such as sand or plaster molding. Some persons looking for information on the casting process may look to Wikipedia for information on choosing casting processes and articles should not mislead them into beleiving one casting process is superior to another. Each casting process has distinct advantages and disadvantages. Mfields1 10:44, 6 May 2006 (UTC)

History of Casting
Following a recent edit by User:Yvwv is was moved to start a discussion on the inclusion of potentially a new page dedicated to the time line of casting, the edit which I have removed for now was only the following:

The casting technology is ancient.

Unfortunately this is possibly not the best way to start the article, if there had been further text then I would have left it there.

Personally I would recommend the creation of a page Casting (History) as the process dates from 9000 B.C. with metal objects being made of copper in the Near East (Ref print article:Global Casting Trends May 2007).

Any body interested in working on this as a project?

MarkBolton 06:37, 15 June 2007 (UTC)

External Links in the Casting Article
There is a protocol for linking to external sites Spam Some of the links seem to promote commercial products. I'd like to see some discussion about this, as this tends to distort the article into an advertisment. Mfields1 20:32, 27 May 2006 (UTC)

Die-Casting line 2
take out the extra 'the'

Major rewrite needed
The page needs a major rewrite. Most casting processes are represented but the sections are not balanced. For example, the "Lost wax casting process" gets a top level heading that is equivalent to "Other casting processes used in creating artworks". Meanwhile "Casting in manufacturing" is also at that level but all the processes identified are grouped under two headings, "expendable mold" and "non-expendable mold". If a person does not know what a mold is, then this would be confusing. We need to discuss a better way to organize the page. Mfields1 12:56, 4 September 2006 (UTC)


 * Sorry to skip the discussion part, but as a first step, I've split off the Lost wax casting process, as it discusses the use by artisans whereas the rest of the article is about manufacturing and restructured the remaining article a bit. --Pjacobi

I agree further rewrite is needed. In that vein:

"Expendable mold casting is a generic classification that includes sand, plastic, shell, and investment (lost-wax technique) moldings. All of these involve the use of temporary and nonreusable molds, and need gravity to help force molten fluid into casting cavities.In this process the mold is used only once."

Rewritten, as by definition, expendable molding needs not be gravity fed, it may use resins, which are not considered "molten", and the paragraph redundantly mentions that the mold is not reused. I will fix the paragraph accordingly. Verdatum 10:22, 28 December 2006 (UTC)

I believe this page should be split up into the different casting technologies as seperate technologies, there is currently insufficient information about each process.

Rewrite of Investment casting section to include more technical information few link pages that require content, I will try to get around to that ASAP, I wanted to split off the Investment casting section as I believe this should be a stand alone section as sand casting is but could not quite figure out how to do that, all content used is written by myself

MarkBolton 16:06, 17 April 2007 (UTC)

Die casting for component assembly
There is a process in which die casting is used to join two or more pre-existing components, even those made of different materials. It is described here:IMA process I think it should be mentioned in the article, with a reference to the website that describes it, but I hesitate to make the edit myself, and certainly I can't ethically add the reference, because I'm the person who maintains that website. Can someone advise me? Thanks. 216.254.160.187 08:46, 6 October 2006 (UTC)

i thick when youre allready writhing of casting you should mention precise casting(molding) i see you have forrgoten it. or i just havent seen it

Technical errors in sand casting section
I see some technical errors in the sand casting section and I plan to split it into sub sections. For example, green sand and airset bonded sand. The error I noticed right off was the weight limit. On the contrary, chemical bonded sands (e.g. furan, ester-cured phenolic and phenolic urethanes processes, to name a few) are regularly used to produce sand castings that weight 100 tons or more. The largest are in steel and iron but quite large sand castings are also poured in non-ferrous.

Investment Casting
Moved Article to Investment Casting Added Introduction to Casting page

whats the difference between casting and moulding? —The preceding unsigned comment was added by Special:Contributions/ (talk)

Mold or mould
Can we please pick one and become consistent?!?! I don't care which, let's just pick one and stick with it though. --Wizard191 (talk) 17:34, 9 February 2008 (UTC)

The english spelling is mould, so I assume that either mold is a typo or an americanism... Personally I'd go with mould, it just looks better. Opinions??

EDIT: I just looked at the edit page for the article and there's a hidden note saying the american spelling is used and so therefore, I won't change that. --**CatoftheNight** (talk) 08:19, 16 May 2008 (UTC)

Since it's already been determined that American spelling is being used in this article, I hereby take the liberty of changing all instances of aluminium to aluminum for consistency's sake. Also, the opinion above that "mould just looks better" does not apply to American eyes! EthanL (talk) 01:58, 21 June 2008 (UTC)
 * Actually you can't do that. For all articles it should be aluminium per Wikipedia:Sulf. Wizard191 (talk) 14:21, 21 June 2008 (UTC)

Merge proposal for Steel casting into Casting
Steel casting doesn't seem to have much relevant information other than the types of steel casting possible. Perhaps we can create a new section about casting materials and merge this info from steel casting into it, then start adding other materials to it? --Wizard191 (talk) 01:07, 25 March 2008 (UTC)
 * Upon looking over the wealth of info on steel casting I'll actually leave it in its own article. --Wizard191 (talk) 23:35, 16 June 2008 (UTC)

Splitting
The article is mainly about Metalcasting. That means, it should be named: Metalcasting and the chapter on resins, concrete and plaster should be removed. If the article is about Casting including resins, concrete and plaster, than all the information about the theory of solidification and shrinkage is plain wrong. I prefer the first suggestion.--Broilerman (talk) 18:46, 25 January 2009 (UTC)


 * I'd agree your general point, but "metalcasting" is an ugly term that's almost never used. Why not call it "melt forging", as one of the bicycle component makers does? "Casting" should be either the main use of the general term (i.e. the casting of metals) or a content-light pure disambiguation. I would favour the first, keeping casting for metals, moving non-metals into their own articles and having Casting (disambiguation) too. Also generous use of hatnotes. Andy Dingley (talk) 19:33, 25 January 2009 (UTC)


 * As for a merge proposal I think there could be sepearte articles for all major types of metal families, including steels, cast irons, aluminum base, brass, bronze, zinc alloys, magnesium alloys, etc. The articles would only be limited by the major metal famlies.  The steel casting artilce is unique only in that it lists a considerable number of steel casting alloys.  The steel casting article should be renamed as such (Steel Casting alloys).  I can't recall ever hearing or reading anyone call it melt forging.  I have seen metal casting but not as a compound word.  Another term that sounds a bit archaic is founding, but I believe it is still understood in this way.  I do agree that the use of the word 'casting' for the article title is misleading if other non metal materials included.  A suggestion might be Casting (metal); Casting (plastic); etc.  Mfields1 (talk) 03:03, 26 January 2009 (UTC)


 * I agree that I've never heard of the terms "metalcasting" or "melt forging". I'm OK with casting (metal) and casting (plastic) articles, however, I don't think there is any info in this article on plastic casting to propagate such an article. Although, I do agree that there should be such an article. Wizard191 (talk) 03:20, 26 January 2009 (UTC)


 * I too would have to agree with your general point, but I think I would lay it out as follows: Keep the casting article about the general processes, both metal and other materials. I would then move all of the metal info from here into a new article, called casting (metalworking) (using the already common modifier). This article could then reference that new article and have a list of the non-metal topics with main links to each. This article would be nothing more than a glorified disambig page with short summaries. Wizard191 (talk) 02:08, 26 January 2009 (UTC)

Update
OK, I split them and moved the one non-metal section over to the new casting article. I'm not sure what to do with the "waste molding of plaster" section. I'm not even sure what it exactly is. The casting article needs work, I know. I think the non-metal section should be split up into individual sections, but there isn't any info to fill them with right now. Wizard191 (talk) 03:03, 12 February 2009 (UTC)

An artistic casting article
Right now there is a section called Waste molding of plaster, which is a technique (or step) for artistic casting. From my meager internet searches it appears that there is a lot of information about the artistic side of casting which isn't covered here. This article is already plenty long so I propose creating a side article for the artistic aspect: casting (art). This is far out of my realm of expertise so I don't know if this makes sense. Here's some refs I've found: &. Wizard191 (talk) 23:04, 11 November 2009 (UTC)

Hierarchy image
I just added the hierarchy image to the expendable molds section. I based it off of a similar work I found in a book, although I'm still not 100% sure of the accuracy. If you think something is wrong or missing, let me know and I can correct it. Wizard191 (talk) 01:24, 8 December 2010 (UTC)

Some additional info
Metal moulds can be reused a great amount of times:
 * 5000 times --> using cast iron
 * 25000 times --> using cupper
 * 50000 to 150000 times --> using aluminium
 * 100000 to 200000 times --> using magnesium
 * 250000 times --> using zinc

That's just random bits of data, it's not content that is useful and meaningful to an encyclopedic article aimed at a general audience. If you don't appreciate the difference, please stop editing. Andy Dingley (talk) 16:52, 13 December 2010 (UTC)


 * Yeah, the info isn't helpful if we don't have a base for what type of process is being used or what the mold is made from. Wizard191 (talk) 01:41, 14 December 2010 (UTC)

Loam moulding
The old method of casting cannon and other things in loam moulds, though probably obsolete, ought to be covered in this article. Peterkingiron (talk) 14:27, 2 August 2016 (UTC)

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Solidification shrinkage
Solidification shrinkage — Preceding unsigned comment added by 103.81.25.48 (talk) 09:25, 23 January 2019 (UTC)