Talk:Casting

From Wikipedia, the free encyclopedia

	This article falls within the scope of WikiProject Visual arts, an attempt to build a comprehensive and detailed guide to visual arts on Wikipedia. If you would like to participate, visit the project page, where you can join the project and/or contribute to the discussion.
???	Class: This article has not been assigned a class according to the assessment scale.

This article is part of WikiProject Metalworking, an attempt to cleanup, categorize and expand Wikipedia articles related to metalworking. If you would like to participate, you can edit the article attached to this page or visit the project page, where a list of open tasks is maintained.

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) — 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)

Contents 1 External Links in the Casting Article 2 Die-Casting line 2 3 Major rewrite needed 4 Die casting for component assembly 5 Technical errors in sand casting section

[edit] External Links in the Casting Article

There is a protocol for linking to external sites Wikipedia:Spam#External_link_spamming 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)

[edit] Die-Casting line 2

take out the extra 'the'

[edit] 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)

[edit] 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)Irene A Gates

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

[edit] 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.