Successful establishment of Liugong hydraulic valve durability test stand 

The hydraulic valve durability test bed of Liugong stock company has been built and put into operation recently. Hydraulic valve durability test is an important part of the hydraulic valve test, currently part of the international benchmarking enterprise has certain application, successful operation of the test bench in the valve industry belongs to the domestic initiative to fill the gaps in the domestic industry.

The use of hydraulic valve durability test bed plays a vital role in improving the durability of hydraulic valve. Hydraulic valve will bear large alternating pressure impact in actual work, which will lead to fatigue damage of hydraulic valve under alternating pressure impact. Simulating the actual working condition of hydraulic valve under long time alternating pressure in the test chamber through the hydraulic valve durability test rig, to quality problems exposed in the alternating pressure hydraulic valve may appear, to find out the weak links of the hydraulic valve durability, improved design and manufacture, improve the durability of the valve.

The use of hydraulic valve durability test bed plays a vital role in improving the durability of hydraulic valve. Hydraulic valve will bear large alternating pressure impact in actual work, which will lead to fatigue damage of hydraulic valve under alternating pressure impact. Simulating the actual working condition of hydraulic valve under long time alternating pressure in the test chamber through the hydraulic valve durability test rig, to quality problems exposed in the alternating pressure hydraulic valve may appear, to find out the weak links of the hydraulic valve durability, improved design and manufacture, improve the durability of the valve.

At present, the test bench has completed the reversing test of P, LS and A, B port high pressure test. The test of inlet and outlet valve body is being carried out, and the durability test of valve stem, compensation valve and end cover will be done soon.