Compressor and processing method therefor
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Solution Overview
Problem
Compressors are prone to severe corrosion due to the easy damage and porosity of existing anticorrosive coating layers, which expose metal coating layers to marine environments, leading to interconnected pores and accelerated corrosion.
Innovation Solution
A compressor with an anticorrosive coating layer comprising a base layer of epoxy resin and a surface layer of acrylic amino or polyester resin, both organic coatings, applied using powder or water-based systems, eliminating the need for a metal coating layer and enhancing corrosion resistance and weatherability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal coating layer is applied on the housing surface, then corrosion resistance is improved, but the coating is easily pierced by sharp objects and exposes the metal layer, leading to severe corrosion
Solution Approach 1:
The invention extracts and removes the metal coating layer from the anticorrosive coating system, retaining only the organic paint coating layers. This eliminates the vulnerability of metal coatings to piercing damage while maintaining corrosion protection through properly designed organic coating systems with adequate thickness and integrity.
Solution Approach 2:
The invention changes the material composition parameters of the coating system from including metal (Al or Zn) to using only organic materials. The paint coating layers are designed with specific thickness requirements (≥50μm for base layer, ≥10μm for surface layer) to compensate for the removal of metal coating and provide equivalent or superior corrosion protection.
2Reliability
If a paint coating layer is sprayed on the metal coating layer, then the metal layer is isolated from the environment, but the paint coating is thin and easily damaged, exposing the metal layer
Solution Approach 1:
The invention significantly increases the thickness parameter of the paint coating layers. The base layer is designed with a thickness of not less than 50μm and the surface layer with a thickness of not less than 10μm, providing adequate mechanical strength and damage resistance while maintaining effective environmental isolation.
Solution Approach 2:
The invention uses a composite structure of two different organic paint coating layers with distinct functions. The base layer provides thick, durable protection and isolation, while the surface layer provides additional protection and aesthetic properties. This composite organic coating system replaces the metal-paint combination with a purely organic alternative that is more damage-resistant.
3Reliability
If a three-layer coating with metal layer and silicon-acrylic base layer is used, then corrosion resistance is enhanced, but the system remains vulnerable to severe corrosion when metal layer is exposed
Solution Approach 1:
The invention completely removes the metal coating layer from the coating system, eliminating the source of severe corrosion that occurs when metal is exposed. The protection is provided entirely by thick organic paint coating layers that do not contain metal, thus avoiding the pore connectivity issue between metal layer and environment.
Solution Approach 2:
The invention changes the material composition to exclude metal entirely, using only organic materials for both the base layer and surface layer. This fundamental parameter change eliminates the corrosion mechanism that occurs when metal is exposed through coating defects or damage.
Data Source
Figure 1~2
Figure 3
AI summary
A compressor and a processing method therefor; a compressor (100) comprises: a housing (110), and an anticorrosive coating (130) covering a surface of the housing (110); the anticorrosive coating (130) comprises: a base layer (131) applied on the surface of the housing (110), and a surface layer (132) applied on said base layer (131); both the base layer (131) and the surface layer (132) are organic coatings. Thus, the housing (110) of the compressor (100) is effectively separated from the external environment by means of the two organic coatings, so as to ensure that the compressor is not corroded; moreover, the anticorrosive coating does not contain a metal coating, thereby preventing the problem of the compressor being severely corroded due to an exposed metal coating.