Design and fabrication of polyvinyl chloride tie-rod cylinder for low pressure water hydraulic system

Teo, Chun Earn (2013) Design and fabrication of polyvinyl chloride tie-rod cylinder for low pressure water hydraulic system. Project Report. UTeM, Melaka. (Submitted)

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Abstract

This thesis presents a study about water hydraulic cylinder. The main purpose of this project is to fabricate a hydraulic cylinder which can be used in the water based hydraulic system. Water hydraulic system is not a new technology. The use of water in hydraulic system is increasing due to the risk of fire, intolerable contamination, and non-environmental friendly. Water hydraulic system can be used to replace the oil hydraulic due to its safety and health issue. Furthermore, it is a sustainable, pollution free, clean, fire retardant hydraulic system. However, water hydraulic has the disadvantages such as corrosion, ease to freeze, low viscosity, microorganism, high bulk modulus, and poor lubrication. This project involved designing and fabricating cylinders which obtain anti-corrosion element and good lubrication property during operation. Some material has been used to replace the existing cylinder, especially PVC block. A hydraulic circuit had been designed to help in the experiment setup. This project involved 5 experiments, the first test was the test on original pneumatic cylinder, by using oil hydraulic system, and the second test was the test on PVC barrel cylinder, by using oil hydraulic system. The third test was the test on PVC cylinder (fully modified) by using oil hydraulic system and the fourth experiment was the test on PVC cylinder by using Oil-Air adapter. The last experiment was the test on PVC cylinder by using Oil-Water adapter. The results of the 5 experiments have been discussed in this thesis. The observations focused on the movement, leakage and corrosion of the PVC cylinder.

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