For the cylinder block, mainly to improve its hardness and wear resistance machining accuracy and surface finish, we choose high-strength base materials, adopt precision casting, high-precision turning processing methods and metal surface mirror processing technology, and the cylinder body surface adopts special carbonitriding heat treatment process, with excellent surface hardness, mechanical strength machining accuracy, surface finish and Wear resistance and other technical indicators.
For piston seal components, it is mainly to improve the wear-resistant machining accuracy, self-lubricating and appropriate toughness, especially to ensure the good sealing of ultra-high pressure gas under the appropriate interference fit. At the same time, due to the high purity gas polluted by lubricant, the piston seal assembly should have good self lubrication. We compare and test hundreds of materials, and use special processing technology to meet the above technical requirements.
In order to achieve good sealing of cylinder block and piston, it is necessary to increase the number of seals and interference with cylinder block. However, this will lead to the difficulty of lubricity, the decrease of working reliability, the shortening of service life, the sudden increase of heat generated by the equipment, and even the combustion of relevant parts and equipment in serious cases.
The replaceable structure of replaceable parts is adopted. After the cylinder block and piston block become tapered, the cylinder block and piston head will contact, collide and extrude in the process of movement. Because of the structure and material, the high pressure cylinder is contacted under the action of super high pressure and high friction temperature. Parts wear out quickly.
Because the cylinder block and the piston head are in contact with the piston head, do not contact with the seal assembly and match with the seal assembly, the process requirements are relatively low, and this part can be separated from other parts. Cylinder block and individually machined into replaceable parts.
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