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Nonferrous topics such as copper and aluminum, annealing, etc. go here.
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TOPIC: Torsion Test

Re: Torsion Test 5 years 11 months ago #1378

Hi Lawrie;

Sorry Lawrie but I cannot divulge that information because if I named the country, you would immediately know the company. Copper however was not working in India when he posted to the Forums. Many technical people from India contract elsewhere as I am sure you know.

That is a huge trip you are taking. Good luck and stay safe. The drivers over there are not exactly concerned with the rules of the road. I was in India for a bit over 12 weeks earlier this year in the "hot" season. Being from Canada where 35C is quite uncommon, I had no understanding of what hot really meant. I also found the word "Kingfisher" to have a whole new meaning, thank goodness. (I am not talking about the airline.)

Best Regards
Peter J. Stewart-Hay
Stewart-Hay Associates
519 641-3212
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Re: Torsion Test 5 years 11 months ago #1379

While it is sometimes prudent not to divulge personal info on this (or any site), there is also the opportunity to personal message to any poster. The idea of this site however is to try to get problem and solutions out into the open for all to see and review.

Anyone can also figure out where people are logging in from via a Whois lookup using the noted ip address.

Erik Macs
VP North American Machinery Sales
Fine International Corporation
148 Oak Street
Natick, MA 01760 USA
508-315-8200 fax: 615-658-1988
This email address is being protected from spambots. You need JavaScript enabled to view it.
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Re: Torsion Test 5 years 11 months ago #1380

In addition to bar/casting problems there might be a problem with the copper cathode, copper scrap, etc. that is fed into the melting pot.

torsion testing info can be found by ordering the following

Abstract Details:

ID: 4096
Title: A New Concept in the Evaluation of the 10 X 10 Twist Test for Copper Rod
Authors: Robert L. Hamill and Sharon K. Young, Magma Copper Co., USA.
Description: This paper will discuss the value of the twist test as a process control tool and as a test to determine copper rod surface quality. The changes in twist test equipment, procedures and the evaluation of test results over the last 20 years at Magma Copper Company will be discussed. The discussion will include the evolution of the twist test starting with the 10 turn forward and 10 turn reverse test, improved testing equipment, and several variations to the standard 10 X 10 twist test such as the 3-die twist test and the 35 turn twist test on break down wire.
Location: Paper presented at WAI Joint Regional Mtg., Charleston, SC USA. Paper published in Wire Journal International, May 1992, pg. 51.
Year: 1991
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