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Method for improving the resistance to fatigue due to repeated pressure on the part of the hole of derivation in member for high pressure fluid.Part of the hole drift member for high pressure fluid formed by the method, and member for high pressure fluid with sliding embedded with the bypass hole
Method for improving the resistance to fatigue due to repeated pressure on the part of the hole of derivation in member for high pressure fluid.Part of the hole drift member for high pressure fluid formed by the method, and member for high pressure fluid with sliding embedded with the bypass hole
Method to improve the resistance to fatigue due to repeated pressure on the part of the hole of derivation in member for high pressure fluid.Part of the hole drift member for high pressure fluid formed by the method, and member for high pressure fluid with sliding embedded with the bypass hole.A member for a fluid under high pressure or in a state to a high pressure fluid with a built-in slide having better quality, which can be produced at a low cost.And by which the generation of tractive effort on the part of the peripheral edge of a bottom hole end internal derivation can be canceled by the residual compressive stress is effectively restrictedThe resistance to fatigue by the internal pressure in the part of the bypass hole can be improved to be excellent in durability.To prevent a leakage of fluid due to the occurrence of breaks and then display a function, precise and stable.In addition, only the addition of the implementation process of compressive force to the manufacturing process shall be sufficient.And complicated equipment is not necessary so that only cause the problems of an increase in the cost of the equipment due to an increase in the number of cases and a decrease in productivity.The method for the formation of a hole of derivation in communication with a hollow part in a state to a high pressure fluid having the hollow part, which is characterized in that before or after.Or simultaneously with a compression process in the state to a high pressure fluid from outside to form a part where the effort remains in the peri compressive areaFu00e9rica inner side of the hollow.A process of drilling of a hole open to the hollow part of the derivation is performed to make the residual compressive stress exists in the peripheral edge of the hole of the derivation.And a part of the hole of derivation of a member for a fluid of high pressure is formed by the method described.
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