Tpr Co., Ltd.

Tpr Industry Co., Ltd.

Ipr Industry Co., Ltd.

Tomoki Takiguchi

Koichi Hatakeyama

Akira Sato

Akira Sayama

Mako Abe

Yuusuke Okuyama

Yoshihiko Aoki

Kazuki Seino

Katsuya Okuda

The present invention addresses the problem of providing a cylinder liner for insert casting, with which the bonding strength between a cylinder liner and a cylinder block can be improved by reducing voids generated on the cylinder block. The problem is solved by a cylinder liner for insert casting which includes plural projections on its outer peripheral surface and satisfies the following (i) and (ii): (i) the number of the projections is 5 to 50 per 1 cmon the outer peripheral surface, and (ii) when two 15.2 mm&#xd7;0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.

Cylinder liner for cast-covering, and method for manufacturing cylinder block

Provided is a cast-iron cylindrical member having projections (P) formed integrally with a casted surface (an outer peripheral surface), and a composite structure including the cast-iron cylindrical member and an outer periphery-side member. The cast-iron cylindrical member satisfies:

Cast-iron cylindrical member and composite structure

Growing community of inventors

Yamagata, Japan

Tomoki Takiguchi