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Method for applying coating

A coating and spraying device technology, which is applied to the surface coating liquid device, coating, metal material coating process, etc., can solve the limitations of thermal spraying methods, large consumption of coating materials, overloading of coating materials, etc. question

Active Publication Date: 2014-01-15
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of thermal spray methods is partially limited due to variations or lack of uniformity in spray thickness
As a result, additional passes of the thermal spray gun may be required to reduce thickness variations, which can lead to overloading of the coating material
A disadvantage associated with coating material overloading is the relatively large consumption of coating material, which increases product costs

Method used

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  • Method for applying coating
  • Method for applying coating

Examples

Experimental program
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example 1

[0060] image 3 shows the reference from figure 2 The value of the diameter of the hole taken by the section rings 232a to 232j as a function of the distance from the top of the hole. Figure 3B records the hole diameter values ​​when the gun is moving at a constant speed, and Figure 3A records the hole diameter values ​​when the gun is moving at a set speed that takes into account the observed values ​​reported in Figure 3B. Set by coating irregularities. Such considerations include controlling the lance 422 to move relatively faster at relatively smaller values ​​of the diameter of the holes as depicted in graph 3B. Graph 3A shows that the diameter of the hole increases significantly from the midpoint of the hole 404 down the direction A-A'. The exact cause of the observed phenomenon is not yet known. However, as suggested here or elsewhere, possible changes in ambient air flow due to movement of the gun tip 424 along the longitudinal direction A-A' of the bore 404 most ...

example 2

[0062] Coating profiles were obtained by utilizing a CMM. Figure 6A and Figure 6B Shown are the coating profiles of the first test hole coating applied at a constant spray speed and the coating profile of the second test hole coating applied at varying speeds based on comparative data. as available from Figure 6A It can be seen that the coating was deposited without adjusting the spraying apparatus based on the comparative data such that the coating profile exhibited a flare, with a large diameter variation from top to bottom. The diameter change of the first test hole coating was reported to be 285um. as available from Figure 6B It can be seen that when the operation of the spraying device is adjusted based on the comparative data, the diameter variation of the holes is significantly reduced. The diameter variation of the second test hole coating was reduced to about 51 um. Figure 7 depicted in Figure 6A and Figure 6B The deviation of the first test hole and the...

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Abstract

A method for applying a coating includes: obtaining a subject cylindrical part including an inner subject coated surface applied using a spraying device at a first operating condition, the inner subject coated surface including a longitudinal axis and a cross-section, the cross-section intersecting the longitudinal axis at a center point and including end points located on an outer perimeter; measuring the inner subject coated surface to obtain subject coating data including distance values, each being a distance between the center point and one of the end points; comparing the subject coating data to standard coating data to obtain comparison data; and adjusting the spraying device based on the comparison data to have a second operating condition different from the first operating condition.

Description

technical field [0001] The present invention relates to a method of determining the uniformity of coating of a coated surface. Background technique [0002] Surface coatings are commonly applied to items such as engine cylinder bores for internal combustion engines. In one application, a thermal spray gun is moved to coat a fixed surface, sometimes in multiple passes of the thermal spray gun to establish a desired coating thickness. However, there are some limitations in the use of thermal spray methods due to variations or lack of uniformity in spray thickness. As a result, additional passes of the thermal spray gun may be required to reduce thickness variations, which can lead to overloading of the coating material. One disadvantage associated with overloading of coating material is the relatively large consumption of coating material, which increases product costs. Contents of the invention [0003] A method for applying a coating comprising: obtaining a subject cyli...

Claims

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Application Information

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IPC IPC(8): B05D1/02G01B21/08
CPCB05B7/224G01B21/20B05D1/02G01B21/08B05B12/084F02B77/02C23C4/12C23C4/18B05B13/0636
Inventor 罗德尼·G·惠特贝克本杰明·T·塔大卫·艾伦·史蒂芬森基斯·雷蒙德·巴图
Owner FORD GLOBAL TECH LLC
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