Singles Kyn structure

Singles Kyn structure (elephant asking for singles Kyn) is a kind of the body structure structure of the railroad carriage.

Table of contents

Process of the development

It was structure to make up a shell and aggregate from arc welding like a body structure made of steel in the body structure made of early aluminum alloy. However, I needed an extremely high technique for the arc welding because a thermal conductivity was high, and the aluminum alloy was a low melting point. In addition, a material cost had been large and production cost rose too much and did not spread very much.

By the progress of the production technology of large-scale extrusion materials, took a part of the aggregate in a part of the shell afterwards; came to be able to form it, and the welding quantity that was necessary at the time of body structure production largely decreased. As a result, I become able to produce a body structure made of aluminum alloy to relatively low cost and will contribute to the generalization of the vehicle made of aluminum alloy.

Characteristic

The fabric forms a T-shaped projection inside of large-scale extrusion materials of the aluminum alloy, and it is in the structure that welded the aggregate such as a pillar or the beam there. For an advantage, I can realize simplification of simplification and the process of manufacture of the aggregate by unifying parts of the aggregate with an outer wall and am to be able to realize a lightweight and low-cost body structure.

There is not room, and, as for the thoughtless lightweighting, faults include the extreme thing that cannot be lightweighted structurally rigidly to invite rigid lack. Because it is structure to support the outer wall of one piece of thin board in aggregate, as for reducing it, there is less a method in aggregate when going to be lightweighted. In addition, I include that I am inferior to soundproofing, insulation characteristics a little because an outer wall is one piece of ultrathin shell.

I came to be able to produce the large hollow shape by the progress of the extrusion technology, and double Kyn structure was realized recently. Because this is advantageous in (rigidity, strength, soundproofing) other than body structure weight, there become few adoption examples of the singles Kyn structure.

References

• Goji Onishi. "It is stronger and searches a lighter body structure (PDF)". 近畿車輛技報 12 (2005-11). November 13, 2010 reading.

Allied item

• Railroad carriage made of aluminum alloy

This item is an unfinished item in conjunction with the railroads. I demand the cooperator who corrects it, and corrects this item (P: railroad /PJ railroad).

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