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Spray method for carbon-doped coating on spherical surface

A spherical surface, carbon coating technology, applied to the surface coating liquid device, coating, pretreatment surface, etc., can solve the problems of coating appearance quality defect, long coating transportation path, poor uniformity of coating thickness, etc. , to achieve the effect of improving appearance quality and thickness uniformity, improving appearance quality and thickness uniformity, and improving coating thickness uniformity

Active Publication Date: 2015-03-04
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, manual spraying is difficult to precisely control the movement path and speed of the spray gun due to the limitation of manual operation, so it is difficult to control the uniformity of the coating thickness on the entire sphere surface, and only automatic spraying equipment can be used
However, the feeding system equipped with robot spraying equipment uses pressure tanks to feed materials under pressure. The paint transportation path is long and the consumption is large, which intensifies the accumulation and sedimentation effect of the paint during the transportation process, and the equipped automatic spray gun has a large output. It will affect the discharge stability and atomization effect of the spray gun, which will easily cause defects in the appearance quality of the coating, and the surface roughness is large, so it is not suitable for spraying small workpieces
Moreover, due to the density distribution deviation and spherical structure characteristics of the spray gun discharge, the coating thickness uniformity after spraying is poor

Method used

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  • Spray method for carbon-doped coating on spherical surface
  • Spray method for carbon-doped coating on spherical surface
  • Spray method for carbon-doped coating on spherical surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The sample is a spherical workpiece, the diameter of the ball: SΦ=60mm, the surface roughness: Ra0.3μm, and the specific operation steps are:

[0025] (1) The manual spray gun is clamped on the robot arm;

[0026] Disassemble the automatic spray gun from the robot arm, carry out reasonable tooling design according to the flange 9 interface, and fix the manual spray gun 1 on the robot arm 4 through the connecting tool 3, which requires the axis 5 of the gun nozzle and the gun body and the robot arm 4 The axes 5 are consistent to ensure the movement and positioning accuracy. The method of flexible connection is used to punch a hole on the trigger 2 of the spray gun, tie the nylon wire 6 to the trigger 2, and pass the other end through the elongated rubber sleeve 7 with certain rigidity. The rubber sleeve 7 is fixed on the robot arm 4 with a wire brake 8 along the direction in which the spray gun trigger 2 is pulled, and the staff can grasp the end of the rubber sleeve at...

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Abstract

The invention provides a spray method for a carbon-doped coating on a spherical surface. The spray method comprises the following steps of clamping a manual spray gun in a robot arm; clamping a spherical workpiece in a spray device; proportioning a coating; spraying by using a robot; performing curing treatment. According to the spray method for the carbon-doped coating on the spherical surface, the appearance quality and the thickness uniformity of the coating on the spherical surface are improved, the surface roughness Sa is smaller than 1.6mu m, and the thickness uniformity reaches + / -5mu m.

Description

technical field [0001] The invention relates to a spraying method of a carbon-doped coating on a spherical surface, belonging to the technical field of surface spraying. Background technique [0002] The spherical sensor used in the aerospace field is sprayed with a carbon-doped coating on its spherical surface to have good space adaptability and electrical conductivity. At the same time, the carbon-doped coating with good surface quality and uniform thickness can improve the consistency of the surface work function of the spherical sensor and meet the needs of space applications. In the prior art, manual spraying is difficult to precisely control the movement path and speed of the spray gun due to the limitation of manual operation, so it is difficult to control the uniformity of the coating thickness on the entire sphere surface, so automatic spraying equipment can only be used. However, the feeding system equipped with robot spraying equipment uses pressure tanks to feed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02B05D3/02B05B13/04B05B15/08B05B15/68
Inventor 蒋钊胡明泰赵云平吴先明王佐磊陈焘李诚
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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