PRODUCTION OF INTERNALLY JACKETED MULTIAXIS COMPOSITE CYLINDER

摘要

PURPOSE:To surely and easily realize the internally jacketed multiaxis composite cylinder by forming cylinder bore surfaces which have jacket hole cylinders in proximity to a cylinder block and communicate with each other to the cylinder block and depositing metal powder to the cylinder bore surfaces by using metallic cores having the coefft. of thermal expansion larger than the coefft. of thermal expansion of the cylinder block. CONSTITUTION:The cylinder bore surfaces 3a having =2 communicating parts 5b are formed to the cylinder block 3. The jacket hole cylinders 6 which are in proximity of the bore surfaces 3a and circulate back and forth the entire circumference thereof in the axial direction are formed. The metal powder is packed into the spaces between the metallic cores 2 having the coefft. of thermal expansion larger than the coefft. of thermal expansion of the cylinder block 3 and the bore surfaces 3a. After the metal powder is deposited in the bore surfaces 3a, the cores 2 are taken out. The internally jacketed multiaxis composite cylinder is surely and easily obtd. in this way.