CN215176393U

CN215176393U - Galvanized plate for back of refrigerator

Info

Publication number: CN215176393U
Application number: CN202023338421.5U
Authority: CN
Inventors: 湛长安
Original assignee: Hefei Yichangxing Intelligent Technology Co ltd
Current assignee: Hefei Yichangxing Intelligent Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-14
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a galvanized sheet for the back of a refrigerator, which comprises a metal substrate; obtaining a zinc coating after the surface of the metal substrate is subjected to zinc plating treatment; micropores are distributed on the surface of the metal substrate; the micropore is a blind hole with the inner cavity diameter larger than the orifice diameter; the zinc coating extends into the micropores. The utility model discloses a galvanized sheet for refrigerator back forms the block structure between galvanizing coat and the metal substrate, improves greatly and combines the fastness between galvanizing coat and the metal substrate, guarantees the protective action of galvanizing coat to metal substrate, and then improves the life of refrigerator backplate.

Description

Galvanized plate for back of refrigerator

Technical Field

The utility model relates to a galvanized sheet technical field especially relates to a galvanized sheet for refrigerator back.

Background

The galvanized sheet is a steel sheet coated with a layer of metallic zinc on the surface, which is used for preventing the surface of the steel sheet from being corroded and prolonging the service life of the steel sheet. The galvanized sheet is widely applied to manufacturing anticorrosive industrial and civil building roof panels, roof grids, civil chimneys, kitchen appliances, home appliance shells, automobile parts, grain storage and transportation, freezing processing appliances of meat and aquatic products, storage and transportation of goods and materials, packaging appliances and the like. The refrigerator is used as a common household appliance, and the back plate of the refrigerator is made of a galvanized plate. The existing galvanized sheet is mainly formed by directly electroplating metal zinc on a steel sheet, the binding force is general, when the galvanized sheet is impacted and collided, a galvanized layer is easily damaged, and then the protection of the metal substrate is lost, in addition, although the galvanized layer is passivated, once the galvanized layer is damaged, the galvanized layer is extremely easy to corrode in a humid environment. Based on this, how to design a galvanized sheet for refrigerator back is the technical problem that the utility model will solve.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide the galvanized sheet that is used for the refrigerator back.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

a galvanized sheet for a back of a refrigerator includes a metal substrate; obtaining a zinc coating after the surface of the metal substrate is subjected to zinc plating treatment;

micropores are distributed on the surface of the metal substrate; the micropore is a blind hole with the inner cavity diameter larger than the orifice diameter; the zinc coating extends into the micropores.

As the improvement of the technical scheme, the maximum diameter of the inner cavity of the micropore is 0.8-1.5 mm; the diameter of the pore opening of the micropore is 0.3-0.5 mm.

As an improvement of the technical scheme, the galvanized sheet for the back of the refrigerator is provided with the micropores in an inverted T-shaped structure.

As an improvement of the technical scheme, the micropores are in a frustum-shaped structure.

As an improvement of the technical scheme, the galvanized sheet for the back of the refrigerator is characterized in that a protective paint layer is covered on the surface of the galvanized layer; the protective paint layer is a waterproof paint layer.

The surface of the protective paint layer is covered with a protective film; the protective film is a wear-resistant paint film.

As an improvement of the technical scheme, the inner wall and the hole bottom of the micropore are rough surfaces subjected to roughening treatment.

The utility model has the advantages that: the utility model discloses a galvanized sheet for refrigerator back forms the block structure between galvanizing coat and the metal substrate, improves greatly and combines the fastness between galvanizing coat and the metal substrate, guarantees the protective action of galvanizing coat to metal substrate, and then improves the life of refrigerator backplate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the metal substrate of the present invention.

FIG. 3 is a schematic view of a first embodiment of a micro-hole.

FIG. 4 is a schematic diagram of the shape of the micro-holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1, referring to the drawings, a galvanized sheet for the back of a refrigerator includes a metal substrate 1; the surface of the metal substrate 1 is galvanized to obtain a galvanized layer 2;

micropores 11 are distributed on the surface of the metal substrate 1; the micropores 11 are blind holes with the inner cavity diameter larger than the orifice diameter; the zinc coating layer 2 extends into the micropores 11;

micropores 11 are formed in the surface of the metal substrate 1, when the surface of the metal substrate 1 is galvanized, zinc ions can be filled into the micropores 11, the bonding area of the galvanized layer 2 and the metal substrate 1 is increased, and the bonding force of the galvanized layer 2 and the metal substrate 1 is further increased; more importantly, the diameter of the inner cavity of the micropore 11 is larger than that of the orifice, after zinc ions are filled into the micropore 11, a clamping structure is formed between the zinc coating 2 and the metal substrate 1, the bonding firmness between the zinc coating 2 and the metal substrate 1 is greatly improved, the protection effect of the zinc coating 2 on the metal substrate 1 is ensured, and the service life of the refrigerator back plate is further prolonged;

the utility model discloses a galvanized sheet for refrigerator back forms the block structure between galvanizing coat and the metal substrate, improves greatly and combines the fastness between galvanizing coat and the metal substrate, guarantees the protective action of galvanizing coat to metal substrate, and then improves the life of refrigerator backplate.

As the improvement of the technical proposal, the maximum diameter of the inner cavity of the micropore 11 is 0.8-1.5 mm; the diameter of the orifice of the micropore 11 is 0.3-0.5 mm;

as an improvement of the above technical solution, the micropores 11 have an inverted T-shaped structure;

the micropores 11 adopt an inverted T-shaped structure, the clamping effect between the zinc coating 2 and the metal substrate 1 is strong, and the combination firmness is good.

As an improvement of the above technical solution, the micropores 11 are of a frustum-shaped structure;

the micropores 11 adopt a frustum-shaped structure, the inner walls of the micropores 11 are smooth, and the influence on the structural strength of the metal substrate 1 is small.

As an improvement of the technical scheme, a protective paint layer 3 is covered and arranged on the surface of the zinc coating layer 2; the protective paint layer 3 is a waterproof paint layer;

because the galvanized layer 2 is extremely easy to corrode in a humid environment, and the general water vapor around the refrigerator is large, the galvanized layer 2 is easy to corrode, the protective paint layer 3 is covered on the surface of the galvanized layer 2, so that the galvanized layer 2 is prevented from corroding, and the protective effect on the metal substrate 1 is ensured.

As a modification of the above technical solution, a protective film 4 is covered and arranged on the surface of the protective paint layer 3; the protective film 4 is a wear-resistant paint film;

the surface of the protective paint layer 3 is provided with the protective film 4, so that the wear resistance is good, and the protective paint layer 3 is protected from abrasion and scratch.

As an improvement of the above technical solution, the inner walls and the bottoms of the micropores 11 are rough surfaces subjected to roughening treatment;

the inner walls and the hole bottoms of the micropores 11 are roughened to form rough surfaces, so that the bonding area of the zinc coating 2 and the metal substrate 1 is further increased, and the bonding firmness of the zinc coating 2 and the metal substrate 1 is improved.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A galvanized sheet for the back of a refrigerator comprises a metal substrate (1); the surface of the metal substrate (1) is galvanized to obtain a galvanized layer (2); the method is characterized in that:

micropores (11) are distributed on the surface of the metal substrate (1); the micropore (11) is a blind hole with the inner cavity diameter larger than the orifice diameter; the zinc coating (2) extends into the micropores (11).

2. The galvanized sheet for the back of a refrigerator according to claim 1, wherein: the maximum diameter of the inner cavity of the micropore (11) is 0.8-1.5 mm; the diameter of the orifice of the micropore (11) is 0.3-0.5 mm.

3. The galvanized sheet for the back of a refrigerator according to claim 1, wherein: the micropores (11) are of an inverted T-shaped structure.

4. The galvanized sheet for the back of a refrigerator according to claim 1, wherein: the micropores (11) are of a frustum structure.

5. The galvanized sheet for the back of a refrigerator according to claim 1, wherein: a protective paint layer (3) is covered on the surface of the zinc coating layer (2); the protective paint layer (3) is a waterproof paint layer.

6. The galvanized sheet for the back of a refrigerator according to claim 5, wherein: the surface of the protective paint layer (3) is covered with a protective film (4); the protective film (4) is a wear-resistant paint film.

7. The galvanized sheet for the back of a refrigerator according to claim 1, wherein: the inner wall and the bottom of the micropore (11) are rough surfaces which are subjected to roughening treatment.