METHOD FOR PRODUCING ANGLED STRAIGHT PIPE

Japanese Patent JP2022117679

A

To provide a method for producing an angled straight pipe capable of easily and stably producing an angled straight pipe in which the inner circumferential face of a socket is tilted by a prescribed angle with respect to an axial center.SOLUTION: The method for producing an angled straight pipe comprising a straight pipe part 2, a socket 3 formed at one end side of the straight pipe part 2 and a spigot formed at the other end side of the straight pipe part 2, in which the outer circumferential face of the socket 3 has a rotationally symmetrical shape with respect to an axial center c of the straight pipe part 2, and the inner circumferential face thereof is tilted by a prescribed angle θ, comprises the steps in which: the side of the socket 3 of a mold 4 is fitted with a core 6 in which the outer circumferential face is tilted by the prescribed angle θ with respect to the axial center c and the end part on the side of the straight pipe part 2 forms a vertical face 7 vertical to the axial center c, and a molten metal m is cast in the mold 4 by centrifugal casting; and an inner face 9 facing the vertical face 7 of the straight pipe from which the core 6 has been removed is ground so as to be a tilted face 10 tilted by the prescribed angle θ.SELECTED DRAWING: Figure 1

JP6286001

Manufacturing method of outer layer material of composite roll for rolling and manufacturing method of composite roll for rolling

TSUTSUMI SHINPEI
MORITA YUYA

JP2021014300A

August 12, 2022

February 01, 2021

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KURIMOTO LTD

B22D13/02; F16L9/02

Naoya Kamada
Bunji Kamata
Yaichiro Nakatani
Masanori Akatsuka

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