Coating dry estimating method, coating dry estimating system and recording medium

• US 7,021,822 B2
• Filed: 12/12/2003
• Issued: 04/04/2006
• Est. Priority Date: 12/13/2002
• Status: Expired due to Fees

• Current Assignee: Fuji Jukogyo KK (Subaru Corp.)
• Original Assignee: Fuji Jukogyo KK (Subaru Corp.)
• Inventors: Shen, Jianrong
• Primary Examiner(s): Gutierrez, Diego
• Assistant Examiner(s): PRUCHNIC, STANLEY J
• Application Number:
  US10/733,379
• Publication Number:
  US 20050047476A1
• Time in Patent Office: 844 Days
• Field of Search: 374/53, 374/102, 344/91, 342/70, 118/666
• US Class Current: 374/53
• CPC Class Codes: G01N 33/32 Paints; Inks

Abstract

Temperature data representing transition of a temperature distribution of a coating target with time lapse is calculated Subsequently, the integrated value of the amount of heat applied to the coating is calculated on the basis of the temperature data. The dry state of the coating is estimated on the basis of the integrated value of the heat amount. In order to estimate the dry state of the coating, the integrated value of the amount of heat applied to the coating and the threshold values for the dry judgment of the coating are compared with each other.

Claims

1. A coating dry estimating method of estimating a dry state of coating on a coating target, comprising:

calculating temperature data indicating a transition of a temperature distribution of the coating target with a time lapse;

calculating an integrated value of an amount of heat applied to the coating on a basis of the temperature data; and

estimating a dry state of the coating on a basis of the integrated value of the amount of heat.

2. The coating dry estimating method according to claim 1, wherein said estimating comprises comparing the integrated value of the amount of heat applied to the coating with a threshold value to estimate the dry state of the coating.

3. The coating dry estimating method according to claim 2, wherein said calculating an integrated value of an amount of heat comprises:

determining a time period for which the temperature of the coating target is within a predetermined temperature range in the temperature data; and

calculating the integrated value of the amount of heat applied to the coating within the time period.

4. The coating dry estimating method according to claim 3, wherein said calculating an integrated value of an amount of heat comprises correcting the integrated value of the amount of heat on a basis of at least one of a film thickness of the coating, a kind of coating material used for the coating, and a content of solvent contained in the coating.

5. The coating dry estimating method according to claim 1, wherein said calculating temperature data comprises:

superimposing a coating target mesh achieved by representing the coating target in a form of a mesh on an in-furnace area mesh achieved by modeling a dry furnace;

representing the dry furnace in the form of a mesh while moving the coating target mesh in conformity with a movement pattern representing a movement locus of the coating target, thereby generating superimposed grids time-sequentially, and

analyzing the temperature distribution of the coating target by using each of the superimposed grids generated time-sequentially.

6. The coating dry estimating method according to claim 5, wherein the coating target mesh comprises a fine mesh achieved by representing an internal structure of a member at a note site to be noted for analysis in the form of a mesh, and a rough mesh achieved by representing a surface of the coating target at portions other than the note site in the form of a mesh.

7. The coating dry estimating method according to claim 2, wherein said calculating temperature data comprises:

superimposing a coating target mesh achieved by representing the coating target in a form of a mesh on an in-furnace area mesh achieved by modeling a dry furnace;

representing the dry furnace in the form of a mesh while moving the coating target mesh in conformity with a movement pattern representing a movement locus of the coating target, thereby generating superimposed grids time-sequentially; and

analyzing the temperature distribution of the coating target by using each of the superimposed grids generated time-sequentially.

8. The coating dry estimating method according to claim 7, wherein the coating target mesh comprises a fine mesh achieved by representing an internal structure of a member at a note site to be noted for analysis in the form of a mesh, and a rough mesh achieved by representing the surface of the coating target at portions other than the note site in the form of a mesh.

9. The coating dry estimating method according to claim 3, wherein said calculating temperature data comprises:

superimposing a coating target mesh achieved by representing the coating target in a form of a mesh on an in-furnace area mesh achieved by modeling a dry furnace;

representing the dry furnace in the form of a mesh while moving the coating target mesh in conformity with a movement pattern representing a movement locus of the coating target, thereby generating superimposed grids time-sequentially; and

analyzing the temperature distribution of the coating target by using each of the superimposed grids generated time-sequentially.

10. The coating dry estimating method according to claim 9, wherein the coating target mesh comprises a fine mesh achieved by representing an internal structure of a member at a note site to be noted for analysis in the form of a mesh, and a rough mesh achieved by representing a surface of the coating target at portions other than the note site in the form of a mesh.

11. The coating dry estimating method according to claim 4, wherein said calculating temperature data comprises:

superimposing a coating target mesh achieved by representing the coating target in a form of a mesh on an in-furnace area mesh achieved by modeling a dry furnace;

representing the dry furnace in the form of a mesh while moving the coating target mesh in conformity with a movement pattern representing a movement locus of the coating target, thereby generating superimposed grids time-sequentially; and

analyzing the temperature distribution of the coating target by using each of the superimposed grids generated time-sequentially.

12. The coating dry estimating method according to claim 11, wherein the coating target mesh comprises a fine mesh achieved by representing an internal structure of a member at a note site to be noted for analysis in the form of a mesh, and a rough mesh achieved by representing a surface of the coating target at portions other than the note site in the form of a mesh.

13. The method of claim 1, wherein said calculating temperature data comprises superimposing a coating target mesh on an in-furnace mesh.

14. The method of claim 13, wherein said calculating temperature data further comprises moving the coating target mesh relative to the in-furnace mesh.

15. The method of claim 14, wherein said calculating temperature data further comprises analyzing the temperature distribution of the coating target.

16. The method of claim 1, wherein said calculating an integrated value of an amount of heat applied to the coating comprises:

correcting the temperature distribution of the coating target based upon at least one of a thickness of the coating, a characteristic of a material in the coating, and a content of solvent in the coating to provide a corrected temperature data for the coating; and

integrating the corrected temperature data for the coating over time to provide the integrated value of the amount of heat applied to the coating.

17. A recording medium recorded with a program for making a computer execute a coating dry estimating method of estimating a dry state of coating on a coated coating target, comprising:

calculating temperature data indicating transition of a temperature distribution of the coating target with time lapse;

calculating an integrated value of an amount of heat applied to the coating on a basis of the temperature data; and

estimating a dry state of the coating on a basis of the integrated value of the amount of heat.

18. A coating dry estimating system for estimating a dry state of coating on a coated coating target, comprising:

a storage device for storing a threshold value for judgment of a dry state of the coating; and

a computer for calculating temperature data representing a transition of a temperature distribution of the coating target with time lapse, calculating an integrated value of the amount of heat applied to the coating on a basis of the temperature data, and comparing the integrated value of the amount of heat applied to the coating with the threshold value to estimate a dry state of the coating.

19. The coating dry estimating system according to claim 18, wherein the computer calculates a time period for which the temperature of the coating target is within a predetermined temperature range in the temperature data, and calculating an integrated value of the amount of heat applied to the coating within the time period.

20. The coating dry estimating system according to claim 18, wherein the computer corrects the integrated value of the amount of heat on a basis of at least one of a film thickness of the coating, a kind of coating material used for the coating, and a content of solvent contained in the coating.