CN212479860U - High-strength bolt - Google Patents
High-strength bolt Download PDFInfo
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- CN212479860U CN212479860U CN202020786878.3U CN202020786878U CN212479860U CN 212479860 U CN212479860 U CN 212479860U CN 202020786878 U CN202020786878 U CN 202020786878U CN 212479860 U CN212479860 U CN 212479860U
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- strength bolt
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Abstract
The utility model discloses a high-strength bolt, including the bolt body that adopts the preparation of high-quality alloy structural steel to form, the bolt body includes nut and screw rod, the upper end of screw rod is polished rod section and fixed connection nut, the lower extreme of screw rod is the screw thread section, be provided with the annular that can twine the iron wire on the lateral wall of nut, the winding has flexible corrosion-resistant insulating tape in the polished rod section, set up a plurality of oil grooves that circumference interval was arranged in the screw thread section, the oil groove extends along upper and lower direction, the surface of bolt body is provided with the transition layer, the surface of transition layer is provided with the boronizing layer, the surface on boronizing layer is provided with the thin layer. By arranging the oil groove, lubricating oil can be added when the high-strength bolt is difficult to disassemble due to rusting, so that the disassembling operation is effectively facilitated; through set up the boronizing layer at bolt body surface, improved the surface hardness of bolt body, screw up the in-process when the bolt body, can not appear damaging because of the extrusion, be favorable to improving corrosion protection.
Description
Technical Field
The utility model relates to a technical field of bolt particularly, relates to a high-strength bolt.
Background
The bolt has wide application in wooden products and mechanical products, is used for fastening and connecting two or more parts into a whole, and is widely applied to the fields of machinery, equipment, vehicles, ships, railways, bridges, buildings and the like.
Although the prior art proposes that a thin film such as hafnium oxide, aluminum oxide and the like is coated on the outer surface of the bolt by using an atomic deposition method, although the strength of the thin film can improve the corrosion resistance of the bolt, the strength is not sufficient, and particularly in the screwing process, the outer thin film is damaged due to friction and extrusion between threads and screwed parts, so that the corrosion resistance is lost.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a high strength bolt, it is not only dismantled conveniently, can also improve the corrosion resisting property and the hardness of bolt body.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a high-strength bolt, includes the bolt body that adopts the preparation of high-quality alloy structural steel to form, the bolt body includes nut and screw rod, the upper end of screw rod is polished rod section and fixed connection the nut, the lower extreme of screw rod is the screw thread section, be provided with the annular that can twine the iron wire on the lateral wall of nut, the winding has flexible corrosion-resistant insulating tape in the polished rod section, set up a plurality of oil grooves that circumference interval was arranged in the screw thread section, the oil groove extends along upper and lower direction, the surface of bolt body is provided with the transition layer, the surface of transition layer is provided with the boronizing layer, the surface on boronizing layer is provided with the thin layer.
Further, the depth of the oil groove is 3 mm.
Further, the thickness of the transition layer is smaller than that of the boronizing layer.
Further, the thickness of the boronizing layer is one tenth to one third of the radius of the cross section of the bolt body.
Further, the thickness of the thin film layer is one tenth to one fiftieth of the thickness of the boronized layer.
Furthermore, the bolt body is made of 10.9S-grade or 8.8S-grade high-quality alloy structural steel through heat treatment.
The utility model has the advantages that: by arranging the oil groove, lubricating oil can be added when the high-strength bolt is difficult to disassemble due to rusting, so that the disassembling operation is effectively facilitated; through set up the boronizing layer at bolt body surface, improved the surface hardness of bolt body, screw up the in-process when the bolt body, can not appear damaging because of the extrusion, be favorable to improving corrosion protection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a high strength bolt according to an embodiment of the present invention;
fig. 2 is a partial cross-sectional view of a high strength bolt according to an embodiment of the present invention.
In the figure:
1. a nut; 2. a screw; 3. a ring groove; 4. a corrosion-resistant insulating tape; 5. an oil sump; 6. a transition layer; 7. a boronizing layer; 8. a thin film layer.
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 all belong to the protection scope of the present invention.
As shown in fig. 1-2, according to the embodiment of the utility model provides a high-strength bolt, including the bolt body that adopts the preparation of high-quality alloy structural steel to form, the bolt body includes nut 1 and screw rod 2, the upper end of screw rod 2 is polished rod section and fixed connection nut 1, the lower extreme of screw rod 2 is the screw thread section, be provided with annular 3 that can twine the iron wire on nut 1's the lateral wall, the winding has flexible corrosion-resistant insulating tape 4 in the polished rod section, set up a plurality of oil grooves 5 that circumference interval was arranged in the screw thread section, oil groove 5 extends along upper and lower direction, the surface of bolt body is provided with transition layer 6, the surface of transition layer 6 is provided with boronizing layer 7, boronizing layer 7's surface is provided with thin layer 8.
In a specific embodiment of the present invention, the depth of the oil groove 5 is 3 mm.
In a specific embodiment of the present invention, the thickness of the transition layer 6 is smaller than the thickness of the boronizing layer 7.
In a specific embodiment of the present invention, the thickness of the boronized layer 7 is one tenth to one third of the radius of the cross section of the bolt body.
In one embodiment of the present invention, the thickness of the thin film layer 8 is one tenth to one fiftieth of the thickness of the boronized layer.
In a specific embodiment of the present invention, the bolt body is made of 10.9S-grade or 8.8S-grade high-quality alloy structural steel through heat treatment.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
High strength bolt include the bolt body, the bolt body adopts 10.9S level or 8.8S level high-quality alloy construction steel and forms through the heat treatment preparation, intensity is high. The bolt body comprises a nut 1 and a screw 2.
The side wall of the nut 1 is provided with an annular groove 3, the groove bottom of the annular groove 3 is arc-shaped, and an iron wire can be wound in the annular groove 3, so that two adjacent high-strength bolts can be wound and locked together through the iron wire, and the vibration resistance of the high-strength bolts is improved.
The upper end of screw rod 2 is the polished rod section, the lower extreme is the screw thread section, the winding has flexible corrosion-resistant insulating tape 4 in the polished rod section, corrosion-resistant insulating tape 4 is insulating soft sticky tape, can effectively prevent the corrosive gas or the liquid that remain in the screw thread hole from to the corruption influence that high strength bolt caused through corrosion-resistant insulating tape 4, high strength bolt's corrosion resisting property has been promoted, service life has been prolonged, a plurality of oil grooves 5 that the circumference interval was arranged have been seted up in the screw thread section, oil groove 5 extends along upper and lower direction, the degree of depth of oil groove 5 is 3mm, when high strength bolt is because rust and difficult dismantlement, can follow oil groove 5 and join lubricating oil, thereby the dismantlement operation has been.
When the bolt body is manufactured, the bolt body and borax are mixed and then heated and boronized in the heat treatment process after tapping, the treatment time is selected to be 1-24 hours according to needs, the thickness of the boronized layer 7 can be increased along with the prolonging of the boronizing time, the boronizing heat treatment time is determined according to the grade of the bolt body and the size of the bolt body, the grade high boronizing heat treatment time of the bolt body is long, and the boronizing heat treatment time of the bolt body is long.
A transition layer 6 is further arranged between the bolt body and the boronizing layer 7, and the thickness of the transition layer 6 is smaller than that of the boronizing layer. The layer structure is mainly used for improving the bonding strength of the boronizing layer and the bolt body.
The bolt body is tempered and the like according to the conventional method and then coated with the thin film layer 8, the thin film layer 8 is made of aluminum oxide, the thin film layer 8 is coated in an atomic deposition mode in the embodiment, and the thin film layer 8 is cured through heat treatment after the coating is finished.
In conclusion, by means of the technical scheme of the utility model, through the arrangement of the oil groove, lubricating oil can be added when the high-strength bolt is not easy to disassemble due to rusting, thereby effectively facilitating the disassembling operation; through set up the boronizing layer at bolt body surface, improved the surface hardness of bolt body, screw up the in-process when the bolt body, can not appear damaging because of the extrusion, be favorable to improving corrosion protection.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high-strength bolt, includes the bolt body that adopts the preparation of high-quality alloy structural steel to form, the bolt body includes nut (1) and screw rod (2), the upper end of screw rod (2) is polished rod section and fixed connection nut (1), the lower extreme of screw rod (2) is the screw thread section, a serial communication port, be provided with annular (3) that can twine the iron wire on the lateral wall of nut (1), the winding has flexible corrosion-resistant insulating tape (4) in the polished rod section, set up a plurality of oil grooves (5) that circumference interval was arranged in the screw thread section, oil groove (5) extend along upper and lower direction, the surface of bolt body is provided with transition layer (6), the surface of transition layer (6) is provided with boronizing layer (7), the surface of boronizing layer (7) is provided with thin layer (8).
2. A high strength bolt according to claim 1, characterized in that the depth of the oil groove (5) is 3 mm.
3. The high strength bolt according to claim 1, characterized in that the thickness of the transition layer (6) is smaller than the thickness of the boriding layer (7).
4. A high strength bolt according to claim 3, characterised in that the thickness of the boronized layer (7) is one tenth to one third of the radius of the cross-section of the bolt body.
5. The high strength bolt according to claim 4, characterized in that the thickness of the thin film layer (8) is one tenth to one fiftieth of the thickness of the boriding layer.
6. The high strength bolt according to claim 1, wherein said bolt body is made of 10.9S-grade or 8.8S-grade high quality alloy structural steel through heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020786878.3U CN212479860U (en) | 2020-05-13 | 2020-05-13 | High-strength bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020786878.3U CN212479860U (en) | 2020-05-13 | 2020-05-13 | High-strength bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479860U true CN212479860U (en) | 2021-02-05 |
Family
ID=74460396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020786878.3U Expired - Fee Related CN212479860U (en) | 2020-05-13 | 2020-05-13 | High-strength bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685415A (en) * | 2021-08-20 | 2021-11-23 | 宁波九龙紧固件制造有限公司 | Flexible high-strength bolt and production process thereof |
-
2020
- 2020-05-13 CN CN202020786878.3U patent/CN212479860U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685415A (en) * | 2021-08-20 | 2021-11-23 | 宁波九龙紧固件制造有限公司 | Flexible high-strength bolt and production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210205 |