Study on Mechanical Properties of Test Blocks with Different Wall Thickness Attached to Planetary Carrier

Author of the article:SHA Jiaxi 1 , YU Yong 1 , WU Yubin 2 , LI Zhuoyan 2 , LIU Peng 1

Author's Workplace：1. Quality Department, Nanjing High Speed Gear Manufacturing Co., Ltd.,; 2. Casting Department, Himile Mechanical Science and Technology(Shandong) Co., Ltd.,

Key Words： planetary carrier; ductile iron; test block; tensile strength

Abstract：In order to more accurately reflect the mechanical properties of thick-walled region of planetary carrier, cast-on
test blocks with different wall thickness attached to planetary carrier was cast, In order to solve the problem that 70 mm
thickness standard test block cannot accurately reflect the mechanical properties of the body in the thick-walled region of the
planetary frame, the attached test block with different wall thicknesses was cast, and the difference of mechanical properties
between the test block with different wall thicknesses and the body was compared and studied. The results show that the
mechanical properties of both the casting body and the test block decrease with the increase of modulus, and when the core
modulus of the test block is close to the core modulus of the test block, the mechanical properties are also very close. For
thick-walled castings, if there is no suitable body sampling location, the mechanical properties of the body can be evaluated
by casting attached test blocks with similar modulus to the body.