katou said:How many packs would you have to build in order to get your money back on the welder? The welds are beautiful!
Katou
anttipaa said:Here is picture of strips/sheets that makita uses. http://aijaa.com/Frn35J 0.1mm thick. Left one I filed off that plating and I think its copper inside but what is that plating? These are very easy to spot weld using dn-10. I just cant find that kind of strips anywhere. I would like to use these instead of nickel or hilumin.
Electro tinned copper, looks like same? http://www.wielandsa.com/commonmedia/content/media/bildergallerie_neu/w_bereich_1/produkte_4/Ringe_verzinnt_liegend_Al_w_x_04.jpg
EDIT: I have one DN-10 for sale in Europe, PM if interested.
okashira said:Hilumin, no thanks. Steel is 1/2 the conductivity of Nickel.
madin88 said:okashira said:Hilumin, no thanks. Steel is 1/2 the conductivity of Nickel.
thanks for this information. i thought its similar and i have also read it somewhere. need to check.
maybe steel-nickel alloy has better conductivity than pure steel?
so this means:
nickel = 17,5% of copper
pure steel = 10,3% of copper
Nobuo said:madin88 said:okashira said:Hilumin, no thanks. Steel is 1/2 the conductivity of Nickel.
thanks for this information. i thought its similar and i have also read it somewhere. need to check.
maybe steel-nickel alloy has better conductivity than pure steel?
so this means:
nickel = 17,5% of copper
pure steel = 10,3% of copper
Pure nickel has 4.16x more electrical resistivity than copper ---- nickel = 24% electrical conductivity of copper
Steel is an alloy, so depends of the % of carbon, iron or adds it varies between 10 to 100 × 10-8 Ωm
So steel alloy would be between 6x to 60x the electrical resistivity of cooper. ---- steel alloy = 16,6% to 1.6% electrical conductivity of cooper
Common carbon steel has 9x more electrical resistivity than cooper ------ carbon steel = 11% electrical conductivity of cooper
Steel strips are tinned with nickel for avoiding corrosion so it would be slighty better conductor
madin88 said:seems like many different values for cunductivity are prevalent here.
the best would be to measure resisistance of lets say a strip with 1m by measuring voltage drop at a given current. this would make it clear. the cross section we know.
any news about the material makita uses? is it really tinned-copper?
i will give these nickel-copper alloy strips available on amazon or ebay a try.
madin88 said:Guys, there must be a reason why nickel is commonly used for this application and NOT copper. also the price of nickel is about twice as high.