Talk:Differential heat treatment

message: Although I'm still in the middle of working on this article, the question of whether or not there should be two separate articles, (one on hardening and another on tempering), has been nagging me in the back of my mind. Personally, I'm leaning toward "not," because I think it's rather to useful to explain both in one article, which is better for highlighting the similarities and differences between the two techniques. Also, I think perhaps the two together may make a decent sized article. If so, perhaps differential heat treating would be a better title, using the other two a redirects. Differential heat treating is also a commonly used term, which I often see in my sources, but is broader, encompassing both techniques. However, it may also mean including short descriptions of modern versions of these techniques, like flame hardening, induction surface hardening, etc... (Might not be a bad thing.) Any thoughts or suggestions? Zaereth (talk) 19:23, 15 June 2012 (UTC)
replies: text: I agree with the idea. The only thing that bugs me is the -ing form. Hardening, tempering, etc., don't have an easy alternative and are therefore used as nouns, but this is not the case with treating. Thus why not "Differential heat treatment"? This might be a matter of usage, which I can't tell as I normally don't read on this topic. I've just had a brief look in Google Books, and noticed that "differential heat treating" is used well as a noun, but often by non-academic or non-native English writers. Materialscientist (talk) 04:16, 22 June 2012 (UTC)
replies: text: With heat treatment, it could go either way. Adding -ing in this case makes it a noun. Personally, heat treatment is just fine for me. I chose the other version because a while back User:Wizard191 changed the article "Heat treatment" to Heat treating, (for reasons I can't quite remember), so I was using that as a convention. If you prefer, "treatment" is jus fine with me. Zaereth (talk) 04:26, 22 June 2012 (UTC)
replies: text: Done. (It took me forever to find the "move" button.) I hope I did that correctly. I still need to write a new, broader lede, and tidy everything up a bit. I think this article could use some more modern stuff. There is also flame hardening and induction hardening, which I think deserve a short description, along with links to main articles. (Flame hardening is also used in knife making, although it is unsuitable for swords, due to the nature of the heat-affected zone.) Differential tempering is commonly used in manufacturing. For instance, Harvey and Krupp developed a method of differentially tempering steel plate, for battleship armor, back in the late 1800s. Localized tempering is often used on welds, where the entire object may be too large or awkward to heat and stress relieve evenly.Zaereth (talk) 19:22, 25 June 2012 (UTC)
thread_title:  Should the article be renamed? 

message: I notice that differential annealing redirects to this article. This would seem appropriate if it was a metallurgical technique, but I can find no reference to it in those terms. It seems to be used frequently for differential equations, especially in artifical intelligence design. It is also a common term in DNA synthesis, but doesn't seem to be a common heat treating process for metals. It may simply be a misnomer for differential tempering, or possibly hardening. I don't know, but it doen't seem to have any common use in metallurgy. If anyone knows about this term and can add info to this article about it, or can redirect it to the correct article, your help waould be appreciated. Zaereth (talk) 00:40, 30 June 2012 (UTC)
thread_title:  Differential annealing 

message: The article said: Differential hardening techniques were originally developed in China, for making swords, and spread across the far-east, from Nepal to Korea and Japan. Later, methods of surface hardening were developed, by quickly heating in localized areas and then quenching, such as flame hardening and induction hardening. However, differential tempering techniques started with the blacksmiths of Europe, originally for making cutting tools, but was also applied to making knives and European-style broadswords. This process was later used in many forms of manufacture where a combination of strength and toughness (impact resistance) is needed, such as the construction of armor plating in early battleships.Sacred Vessels: The Cult of the Battleship and the Rise of the U.S. Navy By Robert L. O'Conne – Oxford University Press 1991 p. 44
I see a lot of claims and little evidence. The one source applies to one fact only. And I doubt that such a history section is useful in the summary. -- Zz (talk) 11:28, 2 August 2013 (UTC)
thread_title:  History