1. When the four-column press operates the cartridge valve, first turn on the loading speed indicating device, and quickly turn the regulator to a suitable position to keep the indicating plate at a certain rotating speed. For example, the loading speed of 50kn should be adjusted to 1r/min on the 3000KN range, and the loading speed of 12.5kn/s on the 1500kn range should be adjusted to 0.5r/min according to the stopwatch, after adjusting the knob of the valve circuit, it remains unchanged.
2. In order to make the oil output from the oil pump enter the oil cylinder quickly and raise the piston quickly to reduce the auxiliary time, the cartridge valve or straight valve of Xinhongwei Hydraulic Press can be opened larger. When the test piece starts to load, attention should be paid to the rotation of the operating valve. According to the pressure test loading speed, the pointer movement should be synchronized with the indicator plate, especially when it is close to the broken tonnage, should not make the load load or lower than the normal value, so as not to affect the actual use of the accuracy.
3.试件破碎后，慢慢的旋开阀路的旋转，使油缸内的油回到油箱内部，此时摆锤徐徐落下，液压指针回到零位。但应该注意不必将油缸内部的液压油全部放完工作活塞杆下落的太低，只要能容纳一次试件顺利安装好就可以了，等下次再试压后，关上回油阀，工作活塞上升保持原速度，四柱液压机调试完毕后关上阀门。
GEO-CANARY-86EA1707