METHOD FOR REPAIRING INNER FACE OF CYLINDER BORE AND APPARATUS FOR REPAIRING INNER FACE OF CYLINDER BORE

Title:

METHOD FOR REPAIRING INNER FACE OF CYLINDER BORE AND APPARATUS FOR REPAIRING INNER FACE OF CYLINDER BORE

Document Type and Number:

Japanese Patent JP2010202939

Kind Code:

A

Abstract:

To provide a method for repairing an inner face of a cylinder bore by which repair work can be carried out in a short period of time and also a cavity can be repaired without causing reduction of strength due to structural changes.

A cavity 3 formed as a recess on the inner face 2a of a cylinder bore of a cylinder block formed by casting is repaired by filling. In the repairing method, a detection sensor is allowed to advance into the cylinder bore 2 to identify the position where the cavity 3 is formed. A thermal spray gun 5 is inserted into the cylinder bore 2 to spray droplets of a molten metal onto the cavity 3 with the identified position to fill the cavity 3. Then, droplets of the molten metal are sprayed over the whole inner face of the cylinder bore including the portion where the cavity 3 is formed.

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Inventors:

IZAWA YOSHINORI
SHIMIZU AKIRA

Application Number:

JP2009051066A

Publication Date:

September 16, 2010

Filing Date:

March 04, 2009

Export Citation:

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Assignee:

NISSAN MOTOR

International Classes:

C23C4/12; B22D29/00; F02F1/00

Domestic Patent References:

JPH042705A	1992-01-07
JP2000328222A	2000-11-28
JP2007163261A	2007-06-28
JP2005305480A	2005-11-04
JP2001234321A	2001-08-31

Attorney, Agent or Firm:

Hidekazu Miyoshi
Iwa Saki Kokuni
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu

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