Study on the Breaking in and the Modulus of Elasticity of the Wire Rope for Mining

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  • 鉱山用鋼索のならしと弾性率の研究
  • コウザンヨウ コウサク ノ ナラシ ト ダンセイリツ ノ ケンキュウ

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Abstract

The modulus of elasticity for tension of the wire rope shows different values by construction and type of lay. It depends also upon the grade and types of deteriorations. Further, though construction and type of lay are the same and the rope is not deteriorated, the modulus of elasticity of a wire rope can vary by the record of its load. In this study, the effects on modulus of elasticity and breaking load, produced by breaking in and ti-ghtness of ropes which are not deteriorated, are reported.<BR>The modulus of elasticity of ropes which are breaked in by repeated tensile load or breaked in by statical tensile load are high, the more the heavier is the load, and by the former process ore higher than by the latter. The maximum value of the breaked in 6 ×7 wire rope is 15, 000kg/mm2.<BR>The breaking load scarcely varies by break in process.

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