ELECTRIC WELDING OF LIGHT METALS
| Autor: | Michiya Shigemitsu, Chuichi Shibata |
|---|---|
| Rok vydání: | 1952 |
| Předmět: |
Heat-affected zone
Materials science Mechanical Engineering Metallurgy technology industry and agriculture Metals and Alloys chemistry.chemical_element Welding respiratory system Electric resistance welding Rod Cryolite law.invention Gas metal arc welding chemistry.chemical_compound chemistry Mechanics of Materials law Aluminium Materials Chemistry Arc welding |
| Zdroj: | Journal of Japan Institute of Light Metals. 1952:71-75 |
| ISSN: | 0451-5994 |
| DOI: | 10.2464/jilm.1952.3_71 |
| Popis: | In case a light metal is used as material for the construction of ships, the employment of the method of electric welding for the building of their hulls with that material is advantageous as in the case of the use of steel material for the same purpose. Accordingly, the writer has conducted researches in the electric welding of light metals along the undermentioned lines.The researches in question concern the trial manufacture of a welding rod for use for light metals and comparison of that rod with the one made by The Alcor and Lincoln Cos. in respect of weld-ability and the physical properties of welded part.Welding rod:The welding rod made by way of trial, composed of pure aluminum and 5% silicon, was tested, and a flux was made from the chlorides and fluorides of alkaline and alkaline earth metals. To be precise, the flux was prepared by adding some lithium chloride, sodium fluoride and aluminum fluoride to a mixture of cryolite, salt and kalium chloride.How electric welding was carried out:A direct current was used for the welder and the parts to be welded had previously been heated to 170°C-200°C.Result of experiment:A rod composed of aluminum and 5% silicon showed better results than the one of pure aluminum. The tensile strength of the welded part was, in the case of 52S material, 14.3kg./mm2-a value fully meeting the requirements of the A. W. S. specification.Conclusion:As compared with the rods made by The Alcor and the Lincoln Cos., the rod containing 5% silicon above referred to indicated no marked difference in respect of strength, but the writer is inclined to think that there is room for further study in chemical composition of the rod and the ratio of the mixture and use of the flux. |
| Databáze: | OpenAIRE |
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