Tribo-thermal fatigue of the steel used for the forging die construction

13th International Conference on Tribology

Drumeanu, A.C.^1

Petroleum-Gas University of Ploiesti, Bd. Bucuresti, no. 39, Ploiesti

100690, Romania^1

关键词: Cracks appearances;    Experimental determination;    Graphic images;    Internal surfaces;    Intrinsic characteristics;    Mechanical fatigue;    Metallic material;    Specific equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/174/1/012047/pdf
DOI  :  10.1088/1757-899X/174/1/012047

来源: IOP

【 摘 要 】

Frequently the durability of the forging dies is firstly determined by the non-isothermal fatigue wear, which causes the cracks appearance on their internal surfaces, much more before their abrasion wear to reach the limit value. In these conditions it is necessary to design the forging dies firstly by the point of view of the non-isothermal fatigue wear. For a correctly choosing and using of metallic material, it is necessary to determine their intrinsic characteristics regarding its cyclic non-isothermal stresses durability. The experimental determination of these characteristics implies a lot of experiments, which are done in specific conditions, different from those used for isothermal mechanical fatigue durability determination. The paper presents the experimental results concerning intrinsic characteristic determination of the forging dies steel. Based on these results there were determined specific equations which characterize this kind of stresses, and the diagrams that represent their graphic image. These data can be used both in designing and exploitation of the forging dies.