Cold Metal Transfer
Cold Metal Transfer (abbreviated CMT) is a welding method.
Definition
CMT is a subset of gas metal arc welding. It works by reducing the weld current and retracting the weld wire when detecting a short circuit, resulting in a drop-by-drop deposit of weld material.[1][2][3][4] Developed for thin materials, CMT requires strict control of weld parameters.[5]
History
CMT was originally intended for joining sheet metal in the automotive industry, but has expanded to thicker materials.[1]
Specifications
| Applications | Energy | Travel speed | Gas |
|---|---|---|---|
| Sheet metal | |||
| Pipeline | 0.47 to 0.75 Kj/mm | 350 – 406 mm/min | Argon/CO2 [1] |
References
- 1 2 3 Ryan Fokens (22 June 2011). "Cold Metal Transfer - CMT - A Revolution in Mechanized Root Pass Pipeline Welding". Retrieved 7 March 2017.
- ↑ wrap.warwick.ac.uk/32487/
- ↑ http://www.axson.se/pdf/fro_bro_CMT_eng.pdf
- ↑ https://dspace.lib.cranfield.ac.uk/bitstream/1826/7013/1/Characterisation_of_the_cold_metal_transfer-2011.pdf
- ↑ http://www.kirj.ee/public/Engineering/2012/issue_3/Eng-2012-3-243-250.pdf
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