Wear-resistant PVD (Physical Vapor Deposition) coating on surface of mold

Abstract

The utility model discloses a wear-resistant PVD (Physical Vapor Deposition) coating on the surface of a die, which comprises a contact layer, the contact layer is made of metal and is fixedly connected with the surface of the die, a titanium nitride layer, a tungsten nitride layer and an aluminum nitride layer are arranged above the contact layer, the titanium nitride layer, the tungsten nitride layer and the aluminum nitride layer are oppositely distributed up and down, and the titanium nitride layer, the tungsten nitride layer and the aluminum nitride layer are arranged on the contact layer. The upper surface of the contact layer is fixedly connected with a spring, the spring penetrates through the tungsten nitride layer and the aluminum nitride layer, the upper end of the spring is fixedly connected with a reinforcing layer, and the reinforcing layer is fixedly connected with the titanium nitride layer. Through the structure, the wear resistance of the PVD coating is improved, meanwhile, the stress concentration effect of the PVD coating is reduced, and the service life of the PVD coating is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of PVD coatings, in particular to a wear-resistant PVD coating on the surface of a mold. Background Art

[0002] Adding PVD coating to the mold surface can significantly improve the wear resistance, corrosion resistance and surface quality of the mold, extend the service life of the mold, and improve production efficiency and product quality. However, the PVD coating after spraying is affected by external factors, resulting in a reduction in the real practicality of the simple PVD coating. The "A wear-resistant PVD coating on the mold surface" disclosed on the China Patent Network has an application number of "202322209954.0". The PVD coating improves the practicality of the PVD coating through a metal base layer, a chromium aluminum nitride layer, an aluminum nitride layer, and a titanium nitride carbide layer. However, when used, the coating still cannot reduce the impact of the stress inside the PVD coating and the stress generated by the collision with the outside world on the service life of the PVD coating. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, to provide a wear-resistant PVD coating on the mold surface, to improve the wear resistance of the PVD coating, and at the same time to reduce the stress concentration effect of the PVD coating, and to reduce the influence of external factors on the service life of the PVD coating.

[0004] The utility model also provides a PVD coating with the above-mentioned wear-resistant mold surface, including: a contact layer, the contact layer is made of metal, and the contact layer is fixedly connected to the mold surface, a titanium nitride layer, a tungsten nitride layer, and an aluminum nitride layer are arranged above the contact layer, the titanium nitride layer, the tungsten nitride layer, and the aluminum nitride layer are relatively distributed up and down, a spring is fixedly connected to the upper surface of the contact layer, the spring penetrates the tungsten nitride layer and the aluminum nitride layer, and the upper end of the spring is fixedly connected to a reinforcement layer, and the reinforcement layer is fixedly connected to the titanium nitride layer.

[0005] According to the wear-resistant PVD coating on the mold surface described in the utility model, the upper surface of the contact layer is provided with a receiving groove, and the lower end of the spring is located inside the receiving groove, providing a deformation space for the spring.

[0006] According to the wear-resistant PVD coating on the mold surface described in the utility model, a closing cover is provided on the upper surface of the contact layer, and the closing cover is engaged with the receiving groove to prevent foreign objects from entering the receiving groove.

[0007] According to the wear-resistant PVD coating on the mold surface described in the utility model, the upper surface of the contact layer is fixedly connected with a flexible tube, and the spring is located inside the flexible tube, which reduces the difficulty of adding the coating.

[0008] According to the wear-resistant PVD coating on the mold surface described in the utility model, the diameter of the inner space of the flexible tube and the receiving groove is larger than the diameter of the spring, so as to ensure the normal deformation of the spring.

[0009] According to the wear-resistant PVD coating on the mold surface described in the utility model, the material of the reinforcing layer is the same as that of the contact layer, and the closing cover is made of a brittle material, thereby providing practicality.

[0010] Beneficial Effects

[0011] 1. Compared with the prior art, the wear-resistant PVD coating on the mold surface absorbs and buffers the stress on the PVD coating through the contact layer, the receiving groove, the spring, and the reinforcing layer, and reduces the transmission effect of the stress inside the PVD coating, thereby reducing the influence of external factors on the service life of the PVD coating.

[0012] 2. Compared with the prior art, the wear-resistant PVD coating on the mold surface reduces the difficulty of coating addition work and improves the stability of the spring effect through the closed cover and flexible tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a top view of the structure of a wear-resistant PVD coating on the mold surface of the utility model;

[0015] Figure 2 This is a top view of the structure of a wear-resistant PVD coating on the surface of a mold in a disassembled state according to the utility model;

[0016] Figure 3 This is a structural diagram of a mold surface wear-resistant PVD coating in a disassembled state viewed from above according to the utility model;

[0017] Figure 4 The utility model is a PVD coating for mold surface wear resistance Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Legend:

[0019] 1. Contact layer; 2. Titanium nitride layer; 3. Tungsten nitride layer; 4. Aluminum nitride layer; 5. Spring; 6. Storage groove; 7. Reinforcement layer; 8. Flexible tube; 9. Closing cover. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4 The utility model embodiment is a wear-resistant PVD coating on the mold surface, which includes: a contact layer 1, the contact layer 1 is made of metal, and the contact layer 1 is fixedly connected to the mold surface, a titanium nitride layer 2, a tungsten nitride layer 3, and an aluminum nitride layer 4 are arranged above the contact layer 1, and the titanium nitride layer 2, the tungsten nitride layer 3, and the aluminum nitride layer 4 are relatively distributed up and down, and the above structures cooperate with each other to form the basic structure of the PVD coating.

[0022] A spring 5 is fixedly connected to the upper surface of the contact layer 1, and the spring 5 penetrates the tungsten nitride layer 3 and the aluminum nitride layer 4. A receiving groove 6 is provided on the upper surface of the contact layer 1, and the lower end of the spring 5 is located inside the receiving groove 6. The spring 5 cooperates with the receiving groove 6 to buffer and absorb when the coating is subjected to external stress, thereby increasing the overall elasticity of the coating, reducing stress concentration, reducing the fragility of the coating, improving the durability of the coating, and reducing the stress transfer between the coating and the substrate, reducing the internal stress of the coating, thereby improving the adhesion of the coating (the above effects are all information queried by ChatGTP), and a reinforcing layer 7 is fixedly connected to the upper end of the spring 5, and the reinforcing layer 7 is fixedly connected to the titanium nitride layer 2. The material of the reinforcing layer 7 is the same as that of the contact layer 1, and the reinforcing layer 7 improves the effect of the spring 5.

[0023] A closing cover 9 is provided on the upper surface of the contact layer 1, and the closing cover 9 is clamped with the receiving groove 6. The closing cover 9 is made of brittle material. The closing cover 9 prevents the coating material from entering the interior of the receiving groove 6. A flexible tube 8 is fixedly connected to the upper surface of the contact layer 1. The spring 5 is located inside the flexible tube 8. The diameter of the internal space of the flexible tube 8 and the receiving groove 6 is larger than the diameter of the spring 5. The flexible tube 8 reduces the difficulty of adding the coating and prevents the coating from affecting the effect of the spring 5. The flexible tube 8 has its own creases, which limit the elasticity of the spring 5 without affecting the deformation of the spring 5, thereby improving the stability of the inside of the PVD coating.

[0024] Working principle: When adding PVD coating to the mold, first connect the contact layer 1 to the mold surface, then clamp the appropriate spring 5 and the closing cover 9 and install it inside the storage groove 6. At this time, use the flexible tube 8 to isolate the spring 5, and then fix the reinforcing layer 7 to the upper end of the spring 5 to achieve the effect of completely isolating the spring 5. At this time, you can add the aluminum nitride layer 4, the tungsten nitride layer 3, and the titanium nitride layer 2. When the PVD coating is completely removed and re-sprayed, use the area where the foreign object hits the spring 5 at a fixed point, and use the vibration effect of the spring 5 to improve the convenience of removing the PVD coating. Since the closing cover 9 is made of brittle material, the stress during the collision is large and the closing cover 9 is damaged. At this time, the restriction of the spring 5 is reduced, which can further improve the convenience of removing the PVD coating.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A wear-resistant PVD coating on a mold surface, characterized in that: include: A contact layer (1), the contact layer (1) is made of metal and is fixedly connected to the surface of the mold; a titanium nitride layer (2), a tungsten nitride layer (3), and an aluminum nitride layer (4) are arranged above the contact layer (1); the titanium nitride layer (2), the tungsten nitride layer (3), and the aluminum nitride layer (4) are relatively distributed up and down; A spring (5) is fixedly connected to the upper surface of the contact layer (1), the spring (5) penetrates the tungsten nitride layer (3) and the aluminum nitride layer (4), and a reinforcing layer (7) is fixedly connected to the upper end of the spring (5), and the reinforcing layer (7) is fixedly connected to the titanium nitride layer (2).

2. A wear-resistant PVD coating on a mold surface according to claim 1, characterized in that: The upper surface of the contact layer (1) is provided with a receiving groove (6), and the lower end of the spring (5) is located inside the receiving groove (6).

3. The wear-resistant PVD coating on the mold surface according to claim 1, characterized in that: A closing cover (9) is provided on the upper surface of the contact layer (1), and the closing cover (9) is snap-fitted with the receiving groove (6).

4. The wear-resistant PVD coating on the mold surface according to claim 3, characterized in that: A flexible tube (8) is fixedly connected to the upper surface of the contact layer (1), and the spring (5) is located inside the flexible tube (8).

5. The wear-resistant PVD coating on the mold surface according to claim 4, characterized in that: The diameters of the internal spaces of the flexible tube (8) and the receiving groove (6) are greater than the diameter of the spring (5).

6. The wear-resistant PVD coating on the mold surface according to claim 3, characterized in that: The material of the reinforcement layer (7) is the same as that of the contact layer (1), and the closing cover (9) is made of a brittle material.

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