Method for manufacturing hollow member comprising a mold core that is made of a metallic material having a low melting point that is higher than a first temperature at which a composite material is molded between the mold core and a mold

• Main Authors: LU, BING-RONG, LAI, EN-YU, WANG, ZHENG-XIAN, CHEN, YU-WEN, LAI, FENG-MIN, ZHANG, YU-JIE, LIN, REN-YONG, JI, HUA-WEI, ZHANG, XINGU
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention discloses a method for manufacturing a hollow member, which makes a mold core generate an internal pressure in a mold when the mold core is expanded for shaping at a first temperature so that a composite material located between the mold core and the mold is formed a hollow member that corresponds to the shape of the mold. The present invention is characterized in that the material of the mold core is a low melting point metal and the first temperature is lower than the melting point of the mold core.