CN211449354U - Anti-corrosion coating structure of fastener - Google Patents
Anti-corrosion coating structure of fastener Download PDFInfo
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- CN211449354U CN211449354U CN201921691824.2U CN201921691824U CN211449354U CN 211449354 U CN211449354 U CN 211449354U CN 201921691824 U CN201921691824 U CN 201921691824U CN 211449354 U CN211449354 U CN 211449354U
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- bolt
- layer
- nut
- fastener
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Abstract
The utility model discloses an anti-corrosion coating structure of a fastener, which comprises a bolt, a nut and a fastening gasket, wherein the bolt and the nut are made of one or more of conventional bolt materials, such as carbon steel, stainless steel, copper or other conventional fastener materials; the surface of the nut of the bolt is processed by shot blasting to form a plurality of micropores, the surface of each micropore is provided with a force hardening layer, and the surface of each force hardening layer is provided with an anti-corrosion wear-resistant layer. According to the anti-corrosion coating structure of the fastener, the surface of the nut of the bolt is subjected to sand blasting processing to form a plurality of micropores, so that the adhesive force of the adhesion hardening layer is improved, the surface of the adhesion hardening layer is coated with the three-layer polyolefin pipe coating, so that the fastener has excellent wear resistance, the surface curing hardness reaches 6-7H, the water resistance level is IP8 level, the salt spray resistance level is 10 level, the whole service life of the fastener is greatly prolonged, and the generation of rusting and corrosion phenomena is prevented.
Description
Technical Field
The utility model relates to a fastener technical field specifically is an anticorrosion coating structure of fastener.
Background
The bolt and the nut are the most widely used fasteners for fixing workpieces at present, the bolt is screwed by the nut after penetrating through the workpiece to be fastened in a using mode, in order to prevent the problems of loosening of the nut and the like, the nut is screwed into the nut, the bolt is guaranteed to penetrate through the nut, namely, one or more external threads of the bolt protrude out of the nut, although the nut and the bolt can be guaranteed to be combined and fastened, the external threads can damage the surface to some extent in the process of combining with the nut, if the bolt and the nut are exposed in the external environment, the protruding external threads can be rusted, and when the bolt and the nut are maintained, the bolt and the nut are sometimes required to be separated in a destructive mode.
It is therefore necessary to modify the surface structure of the bolt and nut themselves to prevent the above-mentioned rusting and corrosion phenomena.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anticorrosive coating structure of fastener to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an anti-corrosion coating structure of a fastener comprises a bolt, a nut and a fastening gasket, wherein a plurality of micropores are formed on the surface of a nut of the bolt through shot blasting, a force hardening layer is arranged on the surface of each micropore, an anti-corrosion wear-resistant layer is arranged on the surface of the force hardening layer, and a hard layer for rust prevention and wear resistance is arranged on the inner wall of a screw hole in the upper surface of the bolt; the surface of the nut is provided with an anticorrosive coating, the surface thread of the internal thread hole of the nut is coated with a strengthening layer, and the strengthening layer is further coated on the thread surface of the bolt.
Preferably, the fastening gasket is made of an aging-resistant butyl rubber ring, and the diameter of a micropore on the surface of the nut of the bolt is less than 30 microns.
Preferably, the components of the force application hardening layer are ammonium chloride: 5-10 g/L, zinc chloride is: 0.2-0.5 g/L, glycerol is: 0.1-0.3 g/L and the rest amount of natural varnish.
Preferably, the material of the anticorrosion wear-resistant layer is a three-layer polyolefin pipe coating formed by combining epoxy resin and an extruded polyethylene coating, wherein the material of the bottom coating is solvent-containing epoxy liquid, and the thickness of the bottom coating is 50 microns; the middle coating is made of polyolefin and has the thickness of 100-150 microns; the surface coating is made of modified polyethylene and has a thickness of 0.5-1.0 mm.
Preferably, the hard layer is made of zinc oxide particles fused with a curing agent, and the thickness of the hard layer is 0.5 mm.
Preferably, the strengthening layer is formed by fusing tungsten carbide particles with antirust paint and adding a trace amount of metal adhesive, and the thickness of the strengthening layer is 20 μm.
Advantageous effects
The utility model provides an anticorrosion coating structure of fastener possesses following beneficial effect:
1. the utility model provides a fastener anticorrosion coating structure, its bolt nut's surface is through sandblast processing, make it form a plurality of micropores, improve its adhesive force on strength sclerosis layer, surface coating on strength sclerosis layer has three-layer polyolefin pipe coating, make this fastener have excellent wear resistance, surface curing hardness reaches 6-7H simultaneously, water-fast grade IP8 level, salt spray resistance grade 10 level, the whole life of this fastener has been improved greatly, prevent the production of the corrosion of rustting phenomenon.
2. According to the anti-corrosion coating structure of the fastener, the anti-rust paint is fused with the tungsten carbide particles, and the trace metal adhesive is added to form the strengthening layer, so that the wear resistance of the thread of the bolt and the inner screw of the nut is greatly improved, and meanwhile, the thickness of the strengthening layer is only 20 micrometers, so that the normal threaded connection between the bolt and the nut is not influenced.
Drawings
FIG. 1 is a schematic view of the fastener connection structure of the present invention;
FIG. 2 is a schematic view of a front cross-sectional structure of the bolt of the present invention;
fig. 3 is the structure schematic diagram of the nut of the utility model.
In the figure: 1 bolt, 2 nuts, 3 fastening gaskets, 4 adhesion hardening layers, 5 anticorrosion wear-resistant layers, 6 hard layers, 7 anticorrosion layers, 8 strengthening layers and 9 screw holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an anti-corrosion coating structure of a fastener comprises a bolt 1, a nut 2 and a fastening gasket 3, wherein the fastening gasket 3 is made of an anti-aging butyl rubber ring, and the diameter of a micropore on the surface of a nut of the bolt 1 is less than 30 microns;
the surface of the nut of the bolt 1 is processed by shot blasting to form a plurality of micropores, the particle size of each micropore is smaller than 100 mu m, the surface of each micropore is provided with an adhesion hardening layer 4, and the adhesion hardening layer 4 comprises the following components: 5-10 g/L, zinc chloride is: 0.2-0.5 g/L, glycerol is: 0.1-0.3 g/L and the rest amount of natural varnish;
the surface of the adhesion hardening layer 4 is provided with an anti-corrosion wear-resistant layer 5, the anti-corrosion wear-resistant layer 5 is a three-layer polyolefin pipe coating formed by combining epoxy resin and an extruded polyethylene coating, and the bottom coating is solvent-containing epoxy liquid and has the thickness of 50 mu m; the middle coating is made of polyolefin and has the thickness of 100-150 microns; the surface coating is made of modified polyethylene, and the thickness of the surface coating is 0.5-1.0 mm;
the inner wall of a screw hole 9 on the upper surface of the bolt 1 is provided with a hard layer 6 for rust prevention and wear resistance, the hard layer 6 is made of zinc oxide particles fused with a curing agent, and the thickness of the hard layer 6 is 0.5 mm; the surface of nut 2 is provided with anticorrosive coating 7, the interior screwed hole surface thread coating of nut 2 has strengthening layer 8, strengthening layer 8 still coats the screw surface at bolt 1, strengthening layer 8 is formed by the anti-rust paint fuse tungsten carbide granule and add trace metal bonding agent, the thickness of strengthening layer 8 is 20 mu m, form strengthening layer 8 through setting up by the anti-rust paint fuse tungsten carbide granule and add trace metal bonding agent, make the wear resistance of the interior screwed orifice of its screw thread department of bolt 1 and nut 2 improve by a wide margin, the thickness of strengthening layer 8 only has 20 mu m simultaneously, do not influence normal bolt 1 and nut 2's threaded connection.
The utility model provides an anticorrosion coating structure, the surface of 1 nut of its bolt is through sandblast processing, make it form a plurality of micropores, improve its adhesive force on strength hardening layer 4, three-layer polyolefin pipe coating has been coated on the surface on strength hardening layer 4, make this fastener have excellent wear resistance, surface curing hardness reaches 6-7H simultaneously, water-fast grade IP8 level, salt spray resistance grade 10 level, the whole life of this fastener has been improved greatly, prevent the production of the corrosive phenomena of rustting.
The working principle is as follows: when the anti-corrosion coating structure is processed, firstly, shot blasting processing is carried out on the nut of the bolt 1 on the fastener, then the whole fastener is soaked and cleaned by adopting a chemical degreasing agent, after natural air drying, the raw material of the hardened layer 6 is uniformly coated on the surface of the nut, then drying is carried out at 50 ℃, then spraying is carried out on the anti-corrosion wear-resistant layer 7, after the coating is finished, the raw material of the hard layer 6 is modulated after natural air drying, the thickness of the hard layer 6 is controlled to be 0.5mm, the uniform spraying is carried out inside the screw hole 9, finally, the reinforcing layer 8 is coated on the inner thread of the nut 2 and the thread of the bolt 1, and after the coating is finished, drying is carried out for 30-45min at 60-80.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An anticorrosion coating structure of a fastener, comprising a bolt (1), a nut (2) and a fastening washer (3), characterized in that: the surface of a nut of the bolt (1) is processed by shot blasting to form a plurality of micropores, the surface of each micropore is provided with an adhesion hardening layer (4), the surface of each adhesion hardening layer (4) is provided with an anti-corrosion wear-resistant layer (5), and the inner wall of a screw hole (9) in the upper surface of the bolt (1) is provided with a hard layer (6) for rust prevention and wear resistance; the surface of nut (2) is provided with anticorrosive coating (7), the material and anticorrosive wearing layer (5) of anticorrosive coating (7) are the same and thickness is half of anticorrosive wearing layer (5), the interior screwed hole surface thread coating of nut (2) has strengthening layer (8), strengthening layer (8) is the threaded surface who still coats at bolt (1).
2. The corrosion-resistant coating structure for fasteners according to claim 1, wherein: the fastening gasket (3) is made of an anti-aging butyl rubber ring, and the diameter of a micropore on the surface of a nut of the bolt (1) is smaller than 30 mu m.
3. The corrosion-resistant coating structure for fasteners according to claim 1, wherein: the hard layer (6) is made of zinc oxide particles fused with a curing agent, and the thickness of the hard layer (6) is 0.5 mm.
4. The corrosion-resistant coating structure for fasteners according to claim 1, wherein: the thickness of the strengthening layer (8) is 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691824.2U CN211449354U (en) | 2019-10-11 | 2019-10-11 | Anti-corrosion coating structure of fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691824.2U CN211449354U (en) | 2019-10-11 | 2019-10-11 | Anti-corrosion coating structure of fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211449354U true CN211449354U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921691824.2U Expired - Fee Related CN211449354U (en) | 2019-10-11 | 2019-10-11 | Anti-corrosion coating structure of fastener |
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| CN (1) | CN211449354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700724A (en) * | 2021-09-08 | 2021-11-26 | 浙江哈特惠科技股份有限公司 | Corrosion-resistant bolt assembly and corrosion-resistant treatment method thereof |
| CN113814683A (en) * | 2021-10-13 | 2021-12-21 | 青岛斯帝鲁精密机械有限公司 | Precise thread machining process for metal material |
-
2019
- 2019-10-11 CN CN201921691824.2U patent/CN211449354U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700724A (en) * | 2021-09-08 | 2021-11-26 | 浙江哈特惠科技股份有限公司 | Corrosion-resistant bolt assembly and corrosion-resistant treatment method thereof |
| CN113700724B (en) * | 2021-09-08 | 2023-04-28 | 浙江哈特惠科技股份有限公司 | Corrosion-resistant bolt assembly and corrosion-resistant treatment method thereof |
| CN113814683A (en) * | 2021-10-13 | 2021-12-21 | 青岛斯帝鲁精密机械有限公司 | Precise thread machining process for metal material |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 Termination date: 20211011 |
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| CF01 | Termination of patent right due to non-payment of annual fee |