Melting siliconizing tool for producing carbon-ceramic brake disc

Abstract

The utility model relates to the technical field of brake equipment, and discloses a fusion siliconizing tool for producing a carbon-ceramic brake disc. The fusion siliconizing tool comprises an upper barrel, a lower barrel and a lower barrel, wherein the upper barrel is trumpet-shaped; the lower barrel is of a circular structure with upper and lower openings, and the upper opening of the lower barrel is fixedly connected to the lower opening of the upper barrel; and the plurality of flow guide teeth are arranged on the lower barrel, and the circulating grooves are positioned between the adjacent teeth and are used for guiding the molten silicon to flow into the brake disc. The tool is used for separating the brake disc from silicon, so that excessive residual silicon on the surface of the brake disc is avoided; the molten silicon is guided to flow to the brake disc through a molten silicon infiltration tool circulating groove, so that the molten silicon infiltration is uniform, and the eccentric weight is small; the brake disc is uniformly supported and stressed, so that the stress deformation of the brake disc is reduced; the tool does not make contact with the brake disc, and tool removing machining after melting siliconizing is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of brake materials, for example, to a melt siliconizing tool for producing carbon ceramic brake discs. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] Carbon ceramic brake disc manufacturing processes include chemical vapor infiltration (CVI), precursor impregnation-pyrolysis (PIP), and melt siliconization (LSI). The melt siliconization process offers advantages such as low cost and short manufacturing cycle.

[0004] The existing technology is to use a flow-guiding structure to guide silicon into the brake disc to achieve silicon-enhanced ceramicization of the brake disc. Utility model patent CN206553412, a carbon-carbon tooling suitable for the production of carbon-ceramic composite materials by melt siliconizing, uses a C / C composite material pad under the brake disc to achieve flow guidance. Invention patent CN118108519, a carbon / carbon-silicon carbide tooling and its preparation method and application in liquid-phase siliconizing of carbon-ceramic brake discs also use pads to achieve flow guidance. The siliconizing tooling invented by invention patent CN109176832 supports the brake disc and also plays a guiding role. The flow-guiding structure can prevent a large amount of molten silicon from accumulating on the brake disc surface, but the flow-guiding structure is ceramicized and adheres to the brake disc, which is difficult to remove. After the melt siliconizing is completed, additional processing is required to remove the flow-guiding structure, which affects production efficiency and increases costs. Utility Model Content

[0005] In order to solve the problem that existing tooling is difficult to remove from the adhesion to the brake disc, the present application provides a melt siliconizing tooling for producing carbon ceramic brake discs.

[0006] The utility model provides a melt siliconizing tool for producing carbon ceramic brake discs, comprising:

[0007] The upper barrel is trumpet-shaped;

[0008] The lower barrel is a circular structure with upper and lower openings, and its upper opening is fixedly connected to the lower opening of the upper barrel;

[0009] Multiple guide teeth are installed on the lower barrel.

[0010] Flow grooves, located between adjacent teeth, are used to guide the molten silicon into the brake disc.

[0011] Optionally, the tooling is integrally formed.

[0012] Optionally, the guide teeth are rectangular in structure and are evenly distributed at the lower opening of the lower barrel.

[0013] Optionally, the position of the flow groove corresponds to the inner diameter of the brake disc.

[0014] Optionally, the diameter of the lower edge of the lower barrel is smaller than the inner ring diameter of the brake disc.

[0015] Optionally, the molten siliconizing device is placed behind the graphite crucible, and the upper edge of the upper barrel does not exceed the upper edge of the graphite crucible.

[0016] The melt siliconizing tooling provided in this application can achieve the following technical effects:

[0017] Use tooling to separate the brake disc from the silicon to avoid excess silicon on the brake disc surface; the flow groove of the molten siliconizing tooling guides the molten silicon to flow to the brake disc, ensuring uniform molten siliconizing with minimal weight imbalance; the brake disc supports even force to reduce stress and deformation of the brake disc; the tooling does not contact the brake disc to avoid tooling removal after molten siliconizing.

[0018] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0020] Figure 1 Schematic diagram of the overall structure of the melt siliconizing tooling provided in an embodiment of the present disclosure;

[0021] Figure 2 This is a three-dimensional schematic diagram of the application of the melt siliconizing tooling provided by the embodiment of the present disclosure;

[0022] Figure 3 It is a side schematic diagram of the application of the molten siliconizing tooling provided by the embodiment of the present disclosure.

[0023] Reference numerals:

[0024] 1. Molten siliconizing tooling, 2. Brake disc; 3. Graphite crucible; 4. Upper barrel; 5. Lower barrel; 6. Flow trough; 7. Guide teeth. DETAILED DESCRIPTION

[0025] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0026] In the specification and claims of the embodiments of the present disclosure and the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0027] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0028] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0029] Unless otherwise stated, the term "plurality" means two or more.

[0030] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0032] Combine Figure 1-3 As shown, the embodiment of the present disclosure provides a melt siliconizing tool for producing carbon ceramic brake discs, comprising:

[0033] The upper barrel 4 is trumpet-shaped; the upper edge diameter is 120mm and the height is 35mm; the lower barrel 5 is a circular structure with upper and lower openings, with a diameter of 90mm and a height of 35mm, and its upper opening is fixedly connected to the lower opening of the upper barrel;

[0034] A plurality of guide teeth 7 are provided on the lower barrel 4. The guide teeth are rectangular in structure and are evenly distributed at the lower opening of the lower barrel 4. The specific number is determined by the inner diameter of the brake disc. According to different inner diameters, the corresponding size of tooling can be used.

[0035] The flow groove 6 is located between adjacent teeth and is used to guide the molten silicon to flow into the brake disc. Specifically, the position of the flow groove corresponds to the inner diameter of the brake disc, so that the entire inner diameter of the brake disc can contact the molten silicon.

[0036] The melt siliconizing tool 1 can be made of graphite material, and the tool is integrally formed.

[0037] In actual application, the diameter of the lower edge of the lower barrel 5 is slightly smaller than the inner ring diameter of the brake disc 2. After the molten siliconizing tool 1 is placed in the graphite crucible 3, the upper edge of the upper barrel 4 does not exceed the upper edge of the graphite crucible 3.

[0038] The specific operation steps of melt siliconizing a brake disc using the melt siliconizing tool 1 are as follows:

[0039] (1) A brake disc 2 with an outer ring diameter of 400 mm, an inner ring diameter of 100 mm, and a thickness of 34 mm is placed in a graphite crucible 3, wherein the brake disc 2 has a mass of 3500 g and a density of 1.35 g / cm 3 ;

[0040] (2) Select a melt siliconizing tool 1 with a lower barrel 5 of 90 mm in diameter and 35 mm in height, and an upper barrel 4 with an upper edge diameter of 120 mm and a height of 35 mm, and place it at the center of the brake disc 2;

[0041] (3) Pour 3322 g of silicon into the molten siliconizing tool 1. The flow groove 6 guides the molten silicon to flow to the brake disc 2 to ensure uniform molten siliconizing.

[0042] The tooling designed by the utility model avoids excess silicon on the surface of the brake disc and avoids tooling removal processing after molten siliconization.

[0043] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A melt siliconizing tool for producing carbon ceramic brake discs, characterized in that: include: The upper barrel is trumpet-shaped; The lower barrel is a circular structure with upper and lower openings, and its upper opening is fixedly connected to the lower opening of the upper barrel; Multiple guide teeth are installed on the lower barrel. Flow grooves, located between adjacent teeth, are used to guide the molten silicon into the brake disc.

2. The melt siliconizing tool for producing carbon ceramic brake discs according to claim 1, characterized in that: The tooling is integrally formed.

3. The melt siliconizing tool for producing carbon ceramic brake discs according to claim 1, characterized in that: The guide teeth are rectangular in structure and are evenly distributed at the lower opening of the lower barrel.

4. The melt siliconizing tool for producing carbon ceramic brake discs according to claim 1, characterized in that: The position of the flow groove corresponds to the inner diameter of the brake disc.

5. The melt siliconizing tool for producing carbon ceramic brake discs according to claim 1, characterized in that: The diameter of the lower edge of the lower barrel is smaller than the inner ring diameter of the brake disc.

6. The melt siliconizing tool for producing carbon ceramic brake discs according to claim 1, characterized in that: After the molten siliconizing device is installed on the graphite crucible, the upper edge of the upper barrel does not exceed the upper edge of the graphite crucible.

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