Open Access

Table 3

Interfacial heat transfer coefficient of each part.

Contact surface Interfacial heat transfer coefficient k (kW/(m2·°C))
Die-tube 2.1
Bend die-insert die 2.1
Wiper die-bend die 0.7
Mandrel shank-mandrel holder 4
Flexible ball-joint of flexible ball 4
Dies-heat shield 2.5
Heat shield-machine tool 0.7

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