Insulation roller for induction heater

Abstract

The utility model provides an insulation roller for an induction heater, which comprises a base material, a transition layer and a ceramic layer, the base material is cylindrical, the transition layer is covered on the outer side of the base material through a laser cladding or plasma surfacing technology, the ceramic layer is prepared on the outer layer of the transition layer, the interior of the base material is of a hollow structure, and the ceramic layer is arranged on the outer layer of the transition layer. The ceramic layer is non-magnetic and non-conductive. According to the novel roller body structure, the roller body structure is simplified, the number of parts of the roller is effectively reduced, the overall precision of the roller is improved, the ceramic layer is prepared on the roller surface, the insulativity and abrasion resistance of the roller body are guaranteed, and the service life of the roller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical steel rolling, and in particular to an insulating roller used for an induction heater. Background Art

[0002] The induction heater rollers of the short-process continuous casting and rolling production line in the iron and steel metallurgical industry are mainly composed of a non-magnetic outer roller sleeve, a ceramic rod, an inner roller sleeve and a mandrel. The main function of the ceramic rod is to isolate the inner and outer roller sleeves to prevent the inner and outer roller sleeves from contacting each other and avoid the occurrence of electrical conduction and magnetic conduction between the inner and outer roller sleeves of the roller.

[0003] During the online use, the outer roller sleeve expanded due to heat, causing the bolts to break, causing the ceramic rods to fall off from the inside of the roller body, making the roller unusable. In addition, due to the large number of roller parts, the roller accuracy is greatly affected after long-term use. Summary of the invention

[0004] According to the problem that the outer roller sleeve expands due to heat during online use, causing the bolt to break, causing the ceramic rod to fall off from the inside of the roller body, and causing the roller to be unusable, an insulating roller for an induction heater is provided. The utility model provides a new roller body structure, and prepares a ceramic layer on the roller surface to ensure the insulation and wear resistance of the roller body and improve the service life of the roller.

[0005] The technical means adopted by the utility model are as follows:

[0006] An insulating roller for an induction heater, comprising: a substrate, a transition layer, and a ceramic layer;

[0007] The substrate is cylindrical, the transition layer is covered on the outside of the substrate by laser cladding or plasma cladding technology, and the ceramic layer is prepared on the outer layer of the transition layer;

[0008] The interior of the substrate is a hollow structure;

[0009] The ceramic layer is non-magnetic and non-conductive.

[0010] Furthermore, the insulating roller structure integrates the substrate, the transition layer and the ceramic layer into a cylindrical integrated structure.

[0011] Furthermore, the substrate material is austenitic stainless steel, the transition layer material is MCrAlY (M is Fe, Co, Ni) alloy material, and the ceramic layer material is metal oxide or metal oxide-based ceramic material.

[0012] Due to the adoption of the above technical solution, compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model provides an insulating roller for an induction heater, which effectively reduces the number of roller parts and improves the overall accuracy of the roller by simplifying the roller structure.

[0014] 2. The utility model provides an insulating roller for an induction heater, wherein a ceramic layer is prepared on the roller surface to ensure the overall insulation of the roller, improve the wear resistance of the roller surface, and thus increase the service life of the roller.

[0015] 3. The utility model provides an insulating roller for an induction heater, which can be repeatedly remanufactured and repaired through remanufacturing after partial failure, thereby reducing production costs.

[0016] Based on the above reasons, the utility model can be widely promoted in the field of metallurgical steel rolling technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a partial cross-sectional view of an insulating roller used for an induction heater described in the utility model.

[0019] In the figure: 1, substrate; 2, transition layer; 3, ceramic layer. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0027] like Figure 1 As shown, the utility model provides an insulating roller for an induction heater, comprising: a substrate 1, a transition layer 2, and a ceramic layer 3;

[0028] The substrate 1 is cylindrical, the transition layer 2 is covered on the outside of the substrate 1 by laser cladding or plasma cladding technology, and the ceramic layer 3 is prepared on the outer layer of the transition layer 2;

[0029] The interior of the substrate 1 is a hollow structure;

[0030] The ceramic layer 3 is non-magnetic and non-conductive.

[0031] Furthermore, the insulating roller structure integrates the substrate 1, the transition layer 2 and the ceramic layer 3 into a cylindrical integrated structure.

[0032] Furthermore, the cylindrical integrated structure increases the contact area between the steel plate and the roller surface, reduces the roller surface pressure, and improves the overall accuracy of the roller. At the same time, it effectively avoids the internal parts from falling off due to the expansion of the roller body and prolongs the service life.

[0033] Furthermore, the substrate 1 is made of austenitic stainless steel, the transition layer 2 is made of MCrAlY (M is Fe, Co, Ni) alloy material, and the ceramic layer 3 is made of metal oxide or metal oxide-based ceramic material.

[0034] Furthermore, the material of the substrate 1 can effectively prevent the roller from being heated by induction and reduce the strength of the roller. The material of the transition layer 2 can reduce the mismatch in thermal expansion coefficients between the ceramic layer 3 and the substrate 1 and improve the bonding strength between the ceramic material and the substrate 1. The material of the ceramic layer 3 can prevent the roller from being conductive and magnetic, improve the wear resistance and service life of the roller, and also facilitate the later repair of the roller, thereby reducing production costs.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An insulating roller for an induction heater, characterized in that: include: Substrate, transition layer, ceramic layer; The substrate is cylindrical, the transition layer is covered on the outside of the substrate by laser cladding or plasma surfacing technology, and the ceramic layer is prepared on the outer layer of the transition layer; The interior of the substrate is a hollow structure; The ceramic layer is non-magnetic and non-conductive.

2. The insulating roller for an induction heater according to claim 1, characterized in that: The insulating roller structure integrates the substrate, the transition layer and the ceramic layer into a cylindrical integrated structure.

3. An insulating roller for an induction heater according to claim 2, characterized in that: The substrate material is austenitic stainless steel, the transition layer material is MCrAlY alloy material, wherein M is Fe, Co, or Ni, and the ceramic layer material is metal oxide or metal oxide-based ceramic material.

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