Ultra-wide roller and surface spraying process thereof

Abstract

The invention discloses a surface spraying process for an ultra-wide roller. The surface spraying process comprises the following steps that S1, the surface of a roller blank of the roller is cleaned; s2, spraying a bonding layer on the surface of the cleaned roller blank; s3, spraying a tungsten carbide layer on the roller blank sprayed with the bonding layer; s4, the surface, sprayed with the tungsten carbide layer, of the roller is polished; the ultra-wide roller sequentially comprises a roller blank, a bonding layer and a tungsten carbide layer from inside to outside, the thickness of the bonding layer ranges from 19 micrometers to 21 micrometers, the thickness of the tungsten carbide layer ranges from 50 micrometers to 70 micrometers, and the length of the roller ranges from 8000 mm to 10000 mm. The surface spraying process is easy to operate, the roller surface machining period is shortened, the production efficiency is improved, the surface strength of the roller is effectively improved by spraying the tungsten carbide layer on the surface of the roller, and the roller is more wear-resistant and durable.

Description

Technical Field

[0001] The present application relates to the technical field of plastic production equipment, and in particular to an ultra-wide roller and a surface spraying process thereof. Background Art

[0002] Extra-wide rollers are used in three-roller forming equipment, which is used in the production of plastic products. Extra-wide rollers are suitable for calendering of coils with larger widths. Currently, the traditional process is chrome plating and polishing of the roller surface. However, the traditional chrome plating and polishing process has a long processing cycle and complex process, which affects the production efficiency of extra-wide rollers. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide an ultra-wide roller and a surface spraying process thereof.

[0004] To achieve the above purpose, the present application adopts the following technical solution: a surface spraying process for an ultra-wide roller, comprising the following steps: S1, cleaning the surface of the roller blank of the roller; S2, spraying a bonding layer on the surface of the cleaned roller blank; S3, spraying a tungsten carbide layer on the roller blank sprayed with the bonding layer; S4, polishing the surface of the roller sprayed with the tungsten carbide layer.

[0005] In the above technical solution, it is further preferred that in step S1, the roller blank is rotatably mounted on a bracket around its own axis, and the bracket is also provided with a driving component that is transmission-connected to the roller blank, and the driving component is used to drive the roller blank to rotate around its own axis.

[0006] In the above technical solution, it is further preferred that the rotation speed of the roller blank is 15-17r / min.

[0007] In the above technical solution, it is further preferred that in step S1, the cleaning process includes one or more of alcohol cleaning and acetone cleaning.

[0008] In the above technical solution, it is further preferred that in step S2, the stainless steel powder is heated to 1500-1700 degrees and then sprayed on the surface of the roller blank.

[0009] In the above technical solution, it is further preferred that in step S3, the tungsten carbide powder is heated to 1500-1700 degrees and then sprayed on the surface of the bonding layer.

[0010] In the above technical solution, it is further preferred that in step S2 and step S3, different spray guns are used to spray the bonding layer and the tungsten carbide layer respectively.

[0011] In the above technical solution, further preferably, in step S4, the surface roughness of the roller after polishing is 0.1.

[0012] To achieve the above object, the present application also provides a technical solution: an ultra-wide roller, which sequentially includes a roller blank, a bonding layer, and a tungsten carbide layer from the inside to the outside. The thickness of the bonding layer is 19 - 21 μm, the thickness of the tungsten carbide layer is 50 - 70 μm, and the length of the roller is 8000 - 10000 mm.

[0013] In the above technical solution, further preferably, the surface roughness of the roller blank is 0.04 - 0.06.

[0014] The present application has the following beneficial effects compared with the prior art: The surface spraying process of the present application is simple to operate, shortens the processing cycle of the roller surface, improves production efficiency, and spraying a tungsten carbide layer on the roller surface effectively improves the surface strength of the roller, making the roller more wear-resistant and durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the steps of the surface spraying process of an ultra-wide roller provided by an embodiment of the present application; Figure 2 It is a schematic structural diagram of an ultra-wide roller provided by an embodiment of the present application; Figure 3 For Figure 2 the schematic diagram of the ultra-wide roller in

[0016] wherein: 100, ultra-wide roller; 1, roller blank; 2, bonding layer; 3, tungsten carbide layer; 4, bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To describe in detail the technical content, structural features, achieved objects, and effects of the application, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment.

[0018] The embodiment of the present application provides a surface spraying process for an ultra-wide roller, and the spraying process is used to spray a layer of coating on the surface of the ultra-wide roller to enhance the surface strength of the roller; Figure 1 As shown, the steps of the surface spraying process are: S1, cleaning the surface of the roller blank of the roller; S2, spraying a bonding layer on the surface of the cleaned roller blank; S3, spraying a tungsten carbide layer on the roller blank sprayed with the bonding layer; S4, polishing the surface of the roller sprayed with the tungsten carbide layer.

[0019] The present application also provides an ultra-wide roller produced according to the above-mentioned surface spraying process, such as Figure 2 As shown, the axial length of the ultra-wide roller 100 is 8000-10000mm, which is suitable for the production of coils with longer widths. The ultra-wide roller 100 includes a roller blank 1, a bonding layer 2 and a tungsten carbide layer 3 arranged in sequence from the inside to the outside. The roller blank 1 is cylindrical, the bonding layer 2 is wrapped on the outside of the roller blank 1, and the tungsten carbide layer 3 is wrapped on the outside of the bonding layer 2, forming an ultra-wide roller with a coating on the surface. The thickness of the bonding layer 2 is 19-21μm, and the thickness of the tungsten carbide layer 3 is 50-70μm. The bonding layer 2 is between the roller blank 1 and the tungsten carbide layer 3 to strengthen the firmness of the connection between the roller blank 1 and the tungsten carbide layer 3. The tungsten carbide layer 3 is used to strengthen the roller surface hardness of the ultra-wide roller 100, making the roller more wear-resistant and durable, and extending the service life of the roller.

[0020] Before the surface spraying process is performed, the surface of the roller blank 1 needs to be processed to form a roller blank 1 with a surface roughness of 0.04-0.06, so as to facilitate subsequent uniform spraying and improve the spraying effect.

[0021] In step S1, the roll blank 1 is mounted on a support 4, such as Figure 3 As shown, the roller blank 1 can be mounted on the bracket 4 so as to rotate around its own axis. The bracket 4 is also provided with a driving assembly connected to the roller blank 1. The driving assembly is used to drive the roller blank 1 to rotate around its own axis. When the roller blank 1 is sprayed, the roller blank 1 rotates around its own axis on the bracket 4 to make the spraying uniform. The roller blank 1 has a rotation speed of 15-17r / min under the drive of the driving assembly. The roller blank 1 with a suitable rotation speed makes the spraying uniform and improves the spraying effect.

[0022] The surface of the roller blank 1 needs to be cleaned before spraying. The cleaning process includes one or more methods of alcohol cleaning and acetone cleaning to clean the oil stains on the surface of the roller blank 1 to prevent the oil stains on the surface of the roller blank 1 from affecting the subsequent spraying.

[0023] In step S2, the bonding layer 2 is formed on the surface of the roller blank 1 by thermal spraying technology using stainless steel powder. After the stainless steel powder is heated to 1500-1700 degrees, the molten stainless steel fluid is sprayed onto the surface of the roller blank 1 by a spray gun.

[0024] In step S3, the tungsten carbide layer 3 is formed on the surface of the bonding layer 2 by thermal spraying technology of tungsten carbide powder. After the tungsten carbide powder is heated to 1500-1700 degrees, the molten tungsten carbide fluid is sprayed onto the surface of the bonding layer 2 by a spray gun.

[0025] In step S2 and step S3, different spray guns 5 are used to spray the bonding layer 2 and the tungsten carbide layer 3 to avoid the mixing of stainless steel and tungsten carbide in the spray gun and affect the spraying effect. The stainless steel fluid is sprayed on the surface of the roller blank 1 to form a uniform bonding layer 2, which is more convenient for the subsequent sprayed coating to be formed on the roller surface. The tungsten carbide fluid is sprayed on the surface of the bonding layer 2 to form a tungsten carbide layer 3. The tungsten carbide layer 3 is more firmly covered on the roller surface through the bonding layer 2, is not easy to fall off, and strengthens the strength of the roller surface with the bonding layer 2, thereby increasing the wear resistance of the roller.

[0026] In step S4, after the surface of the tungsten carbide layer is polished, the surface roughness of the ultra-wide roller 100 is 0.1, and the flat roller surface is conducive to calendering the coiled material, thereby improving the appearance and quality of the product.

[0027] The surface spraying process of the present application is simple to operate, shortens the roller surface processing cycle, and improves production efficiency. Spraying a tungsten carbide layer on the roller surface effectively improves the surface strength of the roller, making the roller more wear-resistant and durable.

[0028] The basic principles, main features and advantages of the present application are described in detail. The technical personnel in the industry should understand that the present application is not limited by the above embodiments, and the above embodiments and the description are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, the description and their equivalents.

Claims

1. A surface spraying process for ultra-wide rollers. It is characterized in that The steps include: S1, cleaning the surface of the roller blank of the roller; S2, spraying a bonding layer on the surface of the cleaned roller blank; S3, spraying a tungsten carbide layer on the roller blank sprayed with the bonding layer; S4, polishing the surface of the roller sprayed with the tungsten carbide layer.

2. The surface spraying process according to claim 1, It is characterized in that In step S1, the roller blank is mounted on a bracket so as to be rotatable around its own axis. The bracket is also provided with a driving assembly which is transmission-connected to the roller blank. The driving assembly is used to drive the roller blank to rotate around its own axis.

3. The surface spraying process according to claim 2, It is characterized in that The rotating speed of the roller blank is 15-17r / min.

4. The surface spraying process according to claim 1, It is characterized in that In step S1, the cleaning process includes one or more of alcohol cleaning and acetone cleaning.

5. The surface spraying process according to claim 1, It is characterized in that In step S2, the stainless steel powder is heated to 1500-1700 degrees and then sprayed on the surface of the roller blank.

6. The surface spraying process according to claim 1, It is characterized in that In step S3, the tungsten carbide powder is heated to 1500-1700 degrees and then sprayed on the surface of the bonding layer.

7. The surface spraying process according to claim 1, It is characterized in that In step S2 and step S3, different spray guns are used to spray the bonding layer and the tungsten carbide layer respectively.

8. The surface spraying process according to claim 1, It is characterized in that In step S4, the surface roughness of the roller after the polishing treatment is 0.

1.

9. An ultra-wide roller obtained by the surface spraying process according to any one of claims 1 to 8, It is characterized in that From the inside to the outside, there are roller blank, bonding layer and tungsten carbide layer. The thickness of the bonding layer is 19-21 μm, the thickness of the tungsten carbide layer is 50-70 μm, and the length of the roller is 8000-10000 mm.

10. The ultra-wide roller according to claim 9, It is characterized in that The surface roughness of the roller blank is 0.04-0.06.

Images