| 摘要 |
PROBLEM TO BE SOLVED: To prevent abrasion caused by solid-contact sliding of a rotor and a stator.SOLUTION: In a uniaxial eccentric screw pump 1, a rotor 2 is made of austenitic stainless steel, and provided with micro dimples of 0.1 μm- 20 μm on its surface, and carbon sold-solution diffusion treatment for diffusing carbon in a solid-solution state, is performed in austenite structure on the surface of the rotor 2. |
