CN212657107U

CN212657107U - High-hardness stainless steel screw

Info

Publication number: CN212657107U
Application number: CN202021049000.8U
Authority: CN
Inventors: 李云明
Original assignee: Zhejiang Jiarunde Standard Parts Co ltd
Current assignee: Zhejiang Jiarunde Standard Parts Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-03-05
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a high rigidity stainless steel screw, including the screw body, the outside of screw body is provided with the hardness layer, and the outside on hardness layer is provided with the corrosion-resistant layer, and one side fixed mounting of screw body, corrosion-resistant layer, screw thread and hardness layer has the hexagon to screw up the head, and the hardness layer includes tungsten carbide and tungsten steel, and the fixed surface of screw body installs tungsten carbide, and tungsten carbide's fixed surface installs tungsten steel, and the corrosion-resistant layer includes titanium alloy and high molybdenum stainless steel, and the fixed surface on hardness layer installs high molybdenum stainless steel. The utility model discloses a set up the intensity that the hardness layer is used for increasing the screw body to increase the life of screw body, be used for preventing hardness layer and screw body by the corruption through setting up corrosion-resistant layer, thereby increase the life of screw body, solved current screw simultaneously when using because the reason of external environment leads to its surface to rust, lead to the cracked problem of screw for a long time.

Description

High-hardness stainless steel screw

Technical Field

The utility model relates to a screw technical field specifically is a high rigidity stainless steel screw.

Background

The screw refers to a screw, which is a tool for fastening machine parts of an object step by utilizing the physics and mathematical principles of the inclined plane circular rotation and friction of the object, the screw is a general expression of a fastener, a daily oral statement, a metric thread is in MM (millimeter) unit, the tooth point angle of the metric thread is 60 degrees, both a American thread and an English thread are in inch unit, the tooth point angle of the American thread is also 60 degrees, and the tooth point angle of the English thread is 55 degrees.

The existing screw is rusted on the surface due to the external environment when in use, and the screw is broken for a long time, so that danger is caused, and the existing use requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high rigidity stainless steel screw possesses the advantage that corrosion resistant strength is high, has solved current screw and has leaded to its surface to rust when using because external environment's reason, leads to the cracked problem of screw for a long time.

In order to achieve the above object, the utility model provides a following technical scheme: the high-hardness stainless steel screw comprises a screw body, wherein a hardness layer is arranged outside the screw body, and a corrosion-resistant layer is arranged outside the hardness layer.

Preferably, a hexagonal tightening head is fixedly mounted on one side of the screw body, the corrosion-resistant layer, the threads and the hardness layer.

Preferably, the hardness layer comprises tungsten carbide and tungsten steel, the surface of the screw body is fixedly provided with the tungsten carbide, and the surface of the tungsten carbide is fixedly provided with the tungsten steel.

Preferably, the corrosion-resistant layer comprises titanium alloy and high-molybdenum stainless steel, the surface of the hardness layer is fixedly provided with the high-molybdenum stainless steel, and the surface of the high-molybdenum stainless steel is fixedly provided with the titanium alloy.

Preferably, the surface of the titanium alloy is threaded.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the intensity that the hardness layer is used for increasing the screw body to increase the life of screw body, be used for preventing hardness layer and screw body by the corruption through setting up corrosion-resistant layer, thereby increase the life of screw body, solved current screw simultaneously when using because the reason of external environment leads to its surface to rust, lead to the cracked problem of screw for a long time.

2. The utility model is convenient to install the screw body by arranging the hexagonal tightening head, the hardness of the tungsten carbide is close to that of the diamond, the tungsten carbide is insoluble in water, hydrochloric acid and sulfuric acid, thereby increasing the strength of the screw body and simultaneously increasing the hardness of the screw body, the tungsten steel has a series of excellent performances of high hardness, wear resistance, better strength and toughness, heat resistance, corrosion resistance and the like, in particular to high hardness and wear resistance, even at a temperature of five hundred degrees, the hardness is still high at one thousand degrees, thereby increase the intensity and the life of screw body, the inside molybdenum content of high molybdenum stainless steel is higher, can be able to bear or endure chloride solution corrosion, thereby titanium alloy intensity is high, corrosion resistance is good, the heat resistance is high increases the corrosion resistance of screw body, increases the life of screw body, makes things convenient for the installation of screw body through setting up the screw thread.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic cross-sectional structure of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of the corrosion-resistant layer and the hardness layer of the present invention.

In the figure: 1. a screw body; 2. a hexagonal tightening head; 3. a thread; 4. a corrosion-resistant layer; 401. a titanium alloy; 402. high molybdenum stainless steel; 5. a hardness layer; 501. tungsten carbide; 502. tungsten steel.

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.

In the description herein, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the patent. In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 3, a high hardness stainless steel screw comprises a screw body 1, a hardness layer 5 is arranged on the outer portion of the screw body 1, a corrosion resistant layer 4 is arranged on the outer portion of the hardness layer 5, the hardness layer 5 is arranged to increase the strength of the screw body 1, so as to increase the service life of the screw body 1, the corrosion resistant layer 4 is arranged to prevent the hardness layer 5 and the screw body 1 from being corroded, so as to increase the service life of the screw body 1, a hexagonal tightening head 2 is fixedly arranged on one side of the screw body 1, the corrosion resistant layer 4, a thread 3 and the hardness layer 5, the screw body 1 is conveniently arranged by arranging the hexagonal tightening head 2, the hardness layer 5 comprises tungsten carbide 501 and tungsten steel 502, the surface of the screw body 1 is fixedly provided with tungsten carbide 501, the surface of the tungsten carbide 501 is fixedly provided with tungsten steel 502, the hardness of the tungsten carbide 501 is similar to that of diamond, the tungsten carbide 501 is insoluble in water, hydrochloric acid and sulfuric acid, so that the strength of the screw body 1 is enhanced, the hardness of the screw body 1 is increased, the tungsten steel 502 has a series of excellent performances such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly the high hardness and the wear resistance thereof, the tungsten steel 502 is basically kept unchanged even at a temperature of five hundred degrees, the tungsten steel has very high hardness at one thousand degrees, so that the strength and the service life of the screw body 1 are enhanced, the corrosion-resistant layer 4 comprises a titanium alloy 401 and a high molybdenum stainless steel 402, the surface of the hardness layer 5 is fixedly provided with the high molybdenum stainless steel 402, the surface of the high molybdenum stainless steel 402 is fixedly provided with the titanium alloy 401, the molybdenum content in the high molybdenum stainless steel 402 is high, the corrosion resistance of a chloride solution can be resisted, the titanium alloy 401 has high strength, the corrosion resistance is good, the heat resistance is high, so that the corrosion resistance of the, the surface of the titanium alloy 401 is provided with threads 3, and the installation of the screw body 1 is facilitated by the arrangement of the threads 3.

When in use, the bolt body 1 is convenient to mount by arranging the hexagonal tightening head 2, the hardness of the tungsten carbide 501 is similar to that of diamond, the tungsten carbide 501 is insoluble in water, hydrochloric acid and sulfuric acid, thereby increasing the strength of the screw body 1 and simultaneously increasing the hardness of the screw body 1, the tungsten steel 502 has a series of excellent performances of high hardness, wear resistance, better strength and toughness, heat resistance, corrosion resistance and the like, in particular the high hardness and wear resistance, even at a temperature of five hundred degrees, the hardness is still high at one thousand degrees, thereby increase the intensity and the life of screw body 1, the inside molybdenum content of high molybdenum stainless steel 402 is higher, can be able to bear or endure chloride solution corrosion, thereby titanium alloy 401 intensity is high, corrosion resistance is good, the heat resistance is high increases the corrosion resistance of screw body 1, increases the life of screw body 1, makes things convenient for the installation of screw body 1 through setting up screw thread 3.

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

1. The utility model provides a high rigidity stainless steel screw, includes screw body (1), its characterized in that: the outer portion of the screw body (1) is provided with a hardness layer (5), and the outer portion of the hardness layer (5) is provided with a corrosion-resistant layer (4).

2. A high-hardness stainless steel screw according to claim 1, wherein: one side of the screw body (1), the corrosion-resistant layer (4), the threads (3) and the hardness layer (5) is fixedly provided with a hexagonal tightening head (2).

3. A high-hardness stainless steel screw according to claim 1, wherein: the hardness layer (5) comprises tungsten carbide (501) and tungsten steel (502), the surface of the screw body (1) is fixedly provided with the tungsten carbide (501), and the surface of the tungsten carbide (501) is fixedly provided with the tungsten steel (502).

4. A high-hardness stainless steel screw according to claim 1, wherein: the corrosion-resistant layer (4) comprises a titanium alloy (401) and high-molybdenum stainless steel (402), the high-molybdenum stainless steel (402) is fixedly installed on the surface of the hardness layer (5), and the titanium alloy (401) is fixedly installed on the surface of the high-molybdenum stainless steel (402).

5. The high-hardness stainless steel screw according to claim 4, wherein: the surface of the titanium alloy (401) is provided with threads (3).