Efficient anti-corrosion automobile piston pin

Abstract

The utility model discloses an efficient anti-corrosion automobile piston pin which comprises an automobile piston pin body, the automobile piston pin body comprises a low-carbon steel substrate layer, an inner protection layer is arranged on the inner side of the low-carbon steel substrate layer, and the inner protection layer comprises a polytetrafluoroethylene coating and a polyvinyl chloride coating. The outer protection layer is arranged on the outer side of the low-carbon steel substrate layer and comprises a zirconium alloy coating and a ceramic coating, the polyvinyl chloride coating is arranged on the inner side of the low-carbon steel substrate layer in a coating mode, the polytetrafluoroethylene coating is arranged on the inner side of the polyvinyl chloride coating in a coating mode, and the thickness of the polytetrafluoroethylene coating is the same as that of the polyvinyl chloride coating. The thickness of the polytetrafluoroethylene coating ranges from 1150 micrometers to 250micrometers, and the zirconium alloy coating is arranged on the outer side of the low-carbon steel substrate layer in a coating mode. Through the inner protective layer, the polytetrafluoroethylene coating and the polyvinyl chloride coating, the inner side of the automobile piston pin body can be subjected to two-layer corrosion-resistant protection treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile piston pins, in particular to a highly efficient and corrosion-resistant automobile piston pin. Background Art

[0002] The automobile piston pin is a cylindrical pin installed on the piston skirt. Its middle part passes through the connecting rod small head hole and is used to connect the piston and the connecting rod. Its function is to transmit the gas force borne by the piston to the connecting rod, or to make the connecting rod small head drive the piston to move together. It is one of the important components of the automobile engine. However, the existing automobile piston pin lacks a corrosion protection mechanism, resulting in poor overall corrosion resistance, thereby reducing its service life. Utility Model Content

[0003] The utility model aims to provide a highly efficient anti-corrosion automobile piston pin to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an efficient and corrosion-resistant automobile piston pin, comprising an automobile piston pin body, the automobile piston pin body comprising a low-carbon steel base layer, an inner protective layer is arranged on the inner side of the low-carbon steel base layer, and the inner protective layer comprises a polytetrafluoroethylene coating and a polyvinyl chloride coating, an outer protective layer is arranged on the outer side of the low-carbon steel base layer, and the outer protective layer comprises a zirconium alloy coating and a ceramic coating.

[0005] Preferably, the polyvinyl chloride coating is coated on the inner side of the low carbon steel base layer, and the polytetrafluoroethylene coating is coated on the inner side of the polyvinyl chloride coating.

[0006] Preferably, the thickness of the polytetrafluoroethylene coating and the polyvinyl chloride coating are the same, and the thickness of the polytetrafluoroethylene coating is one hundred and fifty to two hundred and fifty microns.

[0007] Preferably, the zirconium alloy coating is coated on the outside of the low carbon steel base layer, and the ceramic coating is coated on the outside of the zirconium alloy coating.

[0008] Preferably, the zirconium alloy coating and the ceramic coating have the same thickness, and the thickness of the ceramic coating is two hundred to four hundred microns.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] 1. The utility model can provide two layers of corrosion-resistant protection to the inner side of the automobile piston pin body through the inner protective layer, the polytetrafluoroethylene coating and the polyvinyl chloride coating.

[0011] 2. The utility model can provide two layers of corrosion-resistant protection for the outer side of the automobile piston pin body through the outer protective layer, the zirconium alloy coating and the ceramic coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the inner protective layer structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the outer protective layer structure of the utility model.

[0015] In the figure: an automobile piston pin body 1, a low carbon steel base layer 11, an inner protective layer 12, a polytetrafluoroethylene coating 121, a polyvinyl chloride coating 122, an outer protective layer 13, a zirconium alloy coating 131, and a ceramic coating 132. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The automobile piston pin body 1, low carbon steel base layer 11, inner protective layer 12, polytetrafluoroethylene coating 121, polyvinyl chloride coating 122, outer protective layer 13, zirconium alloy coating 131 and ceramic coating 132 components of the present application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. Example

[0018] See also Figure 1 and Figure 2 In order to achieve the purpose of providing two layers of corrosion-resistant protection for the inner side of an automobile piston pin body 1, the present embodiment provides the following technical solution, which specifically discloses: comprising an automobile piston pin body 1, the automobile piston pin body 1 comprising a low-carbon steel base layer 11, an inner protective layer 12 being arranged on the inner side of the low-carbon steel base layer 11, and the inner protective layer 12 comprising a polytetrafluoroethylene coating 121 and a polyvinyl chloride coating 122, the polyvinyl chloride coating 122 being coated on the inner side of the low-carbon steel base layer 11, and the polytetrafluoroethylene coating 121 being coated on the inner side of the polyvinyl chloride coating 122, the thickness of the polytetrafluoroethylene coating 121 and the polyvinyl chloride coating 122 being the same, and the thickness of the polytetrafluoroethylene coating 121 being 150 to 250 microns, the polytetrafluoroethylene coating 121 can provide a first layer of corrosion-resistant protection for the inner side of the automobile piston pin body 1, and the polyvinyl chloride coating 122 can provide a second layer of corrosion-resistant protection for the inner side of the automobile piston pin body 1 after the polytetrafluoroethylene coating 121 is damaged. Example

[0019] See also Figure 1 and Figure 3 In order to achieve the purpose of providing two layers of corrosion-resistant protection for the outer side of the automobile piston pin body 1, the present embodiment provides the following technical solutions, which specifically disclose: an outer protective layer 13 is provided on the outer side of the low-carbon steel base layer 11, and the outer protective layer 13 includes a zirconium alloy coating 131 and a ceramic coating 132, the zirconium alloy coating 131 is coated on the outer side of the low-carbon steel base layer 11, and the ceramic coating 132 is coated on the outer side of the zirconium alloy coating 131, the thickness of the zirconium alloy coating 131 and the ceramic coating 132 are the same, and the thickness of the ceramic coating 132 is two hundred to four hundred microns, the ceramic coating 132 can provide the first layer of corrosion-resistant protection for the outer side of the automobile piston pin body 1, and the zirconium alloy coating 131 can provide the second layer of corrosion-resistant protection for the outer side of the automobile piston pin body 1 after the ceramic coating 132 is damaged.

[0020] The working principle of the present application is as follows: the polytetrafluoroethylene coating 121 can provide a first layer of corrosion-resistant protection for the inner side of the automobile piston pin body 1, and the polyvinyl chloride coating 122 can provide a second layer of corrosion-resistant protection for the inner side of the automobile piston pin body 1 after the polytetrafluoroethylene coating 121 is damaged. At the same time, the ceramic coating 132 can provide a first layer of corrosion-resistant protection for the outer side of the automobile piston pin body 1, and the zirconium alloy coating 131 can provide a second layer of corrosion-resistant protection for the outer side of the automobile piston pin body 1 after the ceramic coating 132 is damaged, thereby effectively improving the overall service life of the automobile piston pin.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient anti-corrosion automobile piston pin, comprising an automobile piston pin body (1), characterized in that: The automobile piston pin body (1) comprises a low-carbon steel base layer (11), an inner protective layer (12) is arranged on the inner side of the low-carbon steel base layer (11), and the inner protective layer (12) comprises a polytetrafluoroethylene coating (121) and a polyvinyl chloride coating (122), and an outer protective layer (13) is arranged on the outer side of the low-carbon steel base layer (11), and the outer protective layer (13) comprises a zirconium alloy coating (131) and a ceramic coating (132).

2. The highly efficient anti-corrosion automobile piston pin according to claim 1, characterized in that: The polyvinyl chloride coating (122) is coated on the inner side of the low-carbon steel base layer (11), and the polytetrafluoroethylene coating (121) is coated on the inner side of the polyvinyl chloride coating (122).

3. The highly efficient anti-corrosion automobile piston pin according to claim 1, characterized in that: The thickness of the polytetrafluoroethylene coating (121) and the polyvinyl chloride coating (122) are the same, and the thickness of the polytetrafluoroethylene coating (121) is between one hundred and fifty and two hundred and fifty micrometers.

4. The highly efficient anti-corrosion automobile piston pin according to claim 1, characterized in that: The zirconium alloy coating (131) is coated on the outside of the low-carbon steel base layer (11), and the ceramic coating (132) is coated on the outside of the zirconium alloy coating (131).

5. The highly efficient anti-corrosion automobile piston pin according to claim 1, characterized in that: The zirconium alloy coating (131) and the ceramic coating (132) have the same thickness, and the thickness of the ceramic coating (132) is between two hundred and four hundred micrometers.

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