1Cr12Ni2WMoVNb

Time:2020-11-26

The results show that with the increase of solution temperature, the strength and hardness of 1cr12ni2wmovnbn steel increase, while the plasticity and toughness decrease. The tempering stability of the steel is enhanced because of the alloying elements such as Ni, W, Mo and V. tempered at 590 ℃ and 690 ℃ are mainly tempered martensite, but the lath characteristics of tempered martensite at 690 ℃ tend to decompose gradually; the holding time of solution is prolonged, The yield strength decreases slightly (the decrease range is about 1.5%), and the tensile strength and plasticity index change little
1Cr12Ni2WMoVNb
The closed punching method of 1Cr12Ni2WMoVNb steel alloy high cylinder ring is as follows: first, design the punching die, the outer wall of the punching die has a dovetail groove for fixing, the punching die has a limit pad for adjusting the blank position, and the 1Cr12Ni2WMoVNb steel alloy blank is punched in the punching die; at the same time, the design of the leakage plate, the outer wall of the leakage plate also has a dovetail groove for fixing, and the upper end of the leakage plate has a finite hole, The 1Cr12Ni2WMoVNb steel alloy blank is placed in the limit control, and the 1Cr12Ni2WMoVNb steel alloy blank is punched in the drain plate to realize the piercing of 1Cr12Ni2WMoVNb steel alloy high cylinder ring. This method can prevent the blank end face drawing, deformation and other defects, and improve the consistency of the blank. This method is used for punching high cylinder ring.
The results show that the temper brittle zone of 1cr12ni2wmovnbn steel is about 500 ℃; the tempering stability of the steel is enhanced due to the alloying elements such as Ni, W, Mo and V. When tempered below 690 ℃, the tempered martensite is dominant in the microstructure; after quenching, tempering and holding at 650 ℃ for 1000 h, the tensile strength and yield strength of 1cr12ni2wmovnbn steel decrease by 8.2% and 9.4% respectively compared with those without long-term aging, However, after 1000 h at 500 ℃, there is no change