A Study on Wear Property of Oil Hydraulic Piston Pump Material

J. Ocean Eng. Technol. 2009;23(3):30-34.

Kim Nam-Soek,Kim Hyun-Soo,Seong Ki-Yong,Ahn Seok-Hwan,Nam Ki-Woo

Graduated School Pukyong National University,Research Center Sam-Ho Precision,Gyeong-Nam Regional Innovation Agency,School of Mechanical Engineering Pukyong National University,Division of Materials Science and Engineering Pukyong National University

유압 피스톤 펌프 소재의 마모 특성에 관한 연구

김남석,김현수,성기용,안석환,남기우

부경대학교 대학원,삼호정밀 기술연구소,경남전략사업기획단,부경대학교 기계공학부,부경대학교 신소재공학부

Keywords: Oil hydraulic piston pump, Wear property, Surface treatment

핵심용어: 유압 피스톤 펌프, 마모 특성, 표면처리

Abstract

Oil hydraulic piston pumps are being extensively used in the world, because of simple design, light weight and effective cost etc. An oil hydraulic pump is likely to have serious problems of high leakage, friction and low energy efficiency according to large time use. In the oil hydraulic piston pumps the clearance between the valve block and piston plays an important role for volumetric and overall efficiency. In this paper, the wear property of the SACM645 material used the hydraulic piston pump has been work out by experimentation with variable heat treatment. To investigate the effect according to the piston surface condition, seven different types specimen were prepared. From the wear test results, induction hardening and nitration were definitely superior to the others. On the whole, nitration was estimated for high strength material to wear resistance.