TH69128B - Compression ring and production method of compression ring - Google Patents

Abstract

DC60 (08/02/56) to provide a competitively priced compression ring with thermal and thermal conductivity Excellent resistance to thermal sagging Which can be used in high-load environment. High compression ratio machine Steel identified by the material number SUP10 in JIS G 4801, which contains a small amount of the doping element, has been used. And the piston ring wire has been annealed prior to operation. In oil tempers in such a way that spherical cementitudes with an average particle size of 0.1 to 1.5 μm are dispersed in the martensite matrix through the tempering process. Which inhibits the movement Of displacement from place and creep even at 300 ° C, and improvement of the resistance slack Heat up To provide compression ring with competitive price capability with thermal and thermal conductivity Excellent resistance to thermal sagging Which can be used in high-load environment. High compression ratio machine Steel identified by the material number SUP10 in JIS G 4801, which contains a small amount of the doping element, has been used. And the piston ring wire has been annealed prior to operation. In oil tempers in such a way that spherical cementitudes with an average particle size of 0.1 to 1.5 μm are dispersed in the martensite matrix through the tempering process. Which inhibits the movement Of displacement and creep even at 300 ํ and the improvement of the resistance slack Heat up

Claims (6)

1. Compression rings containing a mass-composite mixture of C 0.45 to 0.55%, Si 0.15 to 0.35%, Mn 0.65 to 0.95%, Cr 0.80 to 1.10%, and V 0.15 to 0.25%, whose balance is Fe and impurity. Unavoidable The spherical cementitudes with an average particle size of 0.1 to 1.5 μm were dispersed in the martensite matrix through a tempering. 2. Compression ring according to claim 1, where the amount of such spherical cementitiously distributed is 1 to 6% by the area on the microscopic surface of the structure. 3. Compression ring according to claim 1 or 2 with a thermal conductivity of 35 W / m. Kelvin and a thermal slack ratio of 4% or less. 4. Method for the manufacture of compression rings containing mass-composite mixtures with C 0.45 to 0.55%, Si 0.15 to 0.35%, Mn 0.65 to 0.95%, Cr 0.80 to 1.10% and V 0.15 to 0.25%, which contributed to the equilibrium. Is Fe and its inevitable impurity. The spherical cementitudes with an average particle size of 0.1 to 1.5 μm were dispersed in the martensite matrix through a tempering process, in which the assembly method was annealed. Before the process of making a paste in oil before forming Such compression rings 5. Method for production of compression rings according to claim 4, where the annealing procedure is Act at a temperature of 600 to 720 degrees Celsius. 6. Method for production of compression rings according to claim 4 or 5, where the operating procedure The tempering in this oil was performed at a quenching temperature of 820 to 980 ° C and a tempering temperature of 400 to 500 ° C.