The microstructure morphology of 38CrMoAl steel axial plunger after gas nitrocarburizing and liquid sulpho-nitrocarburizing were analyzed and observed by optical microscope and SEM,and the chemical composition of the penetrated layer were measured qualitatively by energy spectrum analysis.

Repair, installation and adjustment of ZBS-H915F axial plunger pump;

Friction and wear properties of 38CrMoAl steel after deformation and ion implantation compound-intensity treatment process was investigated and compared with that of the deformation treated sample and the ion implanted sample.

Surface nanocrystallization of 38CrMoAl steel was realized by surface mechanical attrition treatment, and then the sample was done with ion nitriding and carburization at 490℃.

The laser surface hardening on 38CrMoAl steel was carried out using a continuous wave CO_2 laser.

Fault analysis and renovation of axial plunger pump in the hydraulic system of coal cutter;

Research on internal leakage for axial plunger pump;

Research on the Way of Diagnosis and Forecast for the Fault of Axial Plunger Pump and System Development;

Simulation of axial piston pump characteristic based on virtual prototype technology;

Development and simulation of lubrication test system for port plate/cylinder block in axial piston pump;

Investigation on the application of SCM in the digital variable axial piston pump;