Cylinder block production method
First Claim
1. A cylinder block production method for producing a cylinder block in which a cast iron-made cylinder liner is enclosed within a cylinder block body by casting, comprising:
- a cast-enclosing step of enclosing the cylinder liner within the cylinder block body by casting; and
an erosion-wash step of washing an outer peripheral wall surface of the cylinder liner and eroding a portion of a base structure of the cast iron forming the outer peripheral wall surface of the cylinder liner so as to form many small protrusions on the outer peripheral wall surface by jetting a high-pressure fluid onto the outer peripheral wall surface of the cylinder liner, as a step performed prior to the cast-enclosing step in order to improve strength of adhesion between the cylinder liner and the cylinder block body.
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Accused Products
Abstract
A cylinder block production method is characterized by having, as a step prior to a cast-enclosing step of cast-enclosing a cast iron-made cylinder liner within a cylinder block body, an erosion-wash step of washing an outer peripheral wall surface of the cylinder liner and eroding a portion of a base structure of the cast iron forming the outer peripheral wall surface of the cylinder liner so as to form many small protrusions on the outer peripheral wall surface by jetting a high-pressure fluid onto the outer peripheral wall surface of the cylinder liner, in order to improve strength of adhesion between the cylinder liner and the cylinder block body. Since the base structure is partially eroded, complicated-shape small protrusions can be formed. Furthermore, sand and a mold release agent adhering to the outer peripheral wall surface of the cylinder liner can be removed. Therefore, the adhesion strength will improve.
17 Citations
16 Claims
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1. A cylinder block production method for producing a cylinder block in which a cast iron-made cylinder liner is enclosed within a cylinder block body by casting, comprising:
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a cast-enclosing step of enclosing the cylinder liner within the cylinder block body by casting; and
an erosion-wash step of washing an outer peripheral wall surface of the cylinder liner and eroding a portion of a base structure of the cast iron forming the outer peripheral wall surface of the cylinder liner so as to form many small protrusions on the outer peripheral wall surface by jetting a high-pressure fluid onto the outer peripheral wall surface of the cylinder liner, as a step performed prior to the cast-enclosing step in order to improve strength of adhesion between the cylinder liner and the cylinder block body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16)
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14. The production method according to claim 14, wherein a material of the cylinder block body is a cast iron.
Specification