Road surface member for tire testing machine and manufacturing method of the same
AssigneeKobe Steel, Ltd.
InventorsYu Sumimoto, Shogo Sarumaru, Munenori Soejima
Life of this patent
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Abstract
A rotary drum used in a tire testing machine has a road surface base material made of an aluminum alloy and provided with a road surface onto which a tire is pushed. The road surface is coated with a thermally-sprayed steel film having higher hardness than the road surface base material, and polished. With such a configuration, a favorable test result can be obtained.
Claims9
A road surface member for a tire testing machine, the road surface member onto which a tire is pushed in the tire testing machine, comprising:
- a road surface base material provided with a road surface onto which the tire is pushed, wherein
- said road surface is coated with a thermally-sprayed steel film having higher hardness than said road surface base material, and
- a surface of the thermally-sprayed steel film is polished,
- wherein an arithmetic mean roughness Ra of said road surface is not less than 0.4 but less than 16.
A manufacturing method of a road surface member onto which a tire is to be pushed in a tire testing machine, comprising the steps of:
- coating a road surface of a road surface base material with a thermally-sprayed steel film having higher hardness than the road surface base material;
- and
- polishing a surface of a thermally-sprayed steel film so as to have arithmetic mean roughness of Ra 0.4 to less than 16.
Dependencies are inferred from the claim text.