CN220416148U

CN220416148U - Pearlite gray cast iron for bearing gear

Info

Publication number: CN220416148U
Application number: CN202322000125.1U
Authority: CN
Inventors: 贾方敏; 刘宇球
Original assignee: Zhejiang Pujiang Jingyu Casting Co ltd
Current assignee: Zhejiang Pujiang Jingyu Casting Co ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-01-30
Anticipated expiration: 2033-07-28

Abstract

The utility model discloses pearlite gray cast iron for a bearing gear, which comprises a gear body, wherein the inner ring of the end face of the gear body is provided with a bearing body, the bearing body is composed of an inner ring and an outer ring, a plurality of balls are arranged between the inner ring and the outer ring, the cross sections of the gear body, the inner ring and the outer ring of the bearing body are respectively provided with a layered structure, the central part of the layered structure is provided with a base layer, the upper part and the lower part of the outer part of the base layer are respectively provided with a pearlite layer, the upper part and the lower part of the outer part of the pearlite layer are respectively provided with a reinforcing layer, and the upper part and the lower part of the outer part of the reinforcing layer are respectively provided with an anti-corrosion layer. The utility model enhances the combination capability of carbon and iron, improves the strength of the utility model structure through the reinforcing ribs, can bear most or even all axial stretching or compression force, and has strong protection effect on the gray cast iron surface due to the form of a layer of anti-corrosion resin which is coated on the outer surface of the reinforcing layer in the layered structure of the gear body and the bearing body.

Description

Pearlite gray cast iron for bearing gear

Technical Field

The utility model relates to the technical field of gray cast iron, in particular to pearlite gray cast iron for a bearing gear.

Background

Gray cast iron refers to cast iron having flake graphite, and is called gray cast iron because the fracture appears dark gray at the time of fracture. The main components are iron, carbon, silicon, manganese, sulfur and phosphorus, and the cast iron has the most widely applied, and the yield of the cast iron accounts for more than 80 percent of the total yield of the cast iron. Gray cast iron is widely used in the manufacture of machine tools, machine bases and gears at present.

However, in the use process of the bearing gear casting manufactured by gray cast iron, deformation is often caused by insufficient strength of the gray cast iron, so that the structural strength of the gray cast iron casting is seriously affected, and the service life is reduced.

Disclosure of Invention

The present utility model is directed to a pearlitic gray cast iron for a bearing gear, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pearlite gray cast iron for bearing gear, includes the gear body, the terminal surface inner ring of gear body is provided with the bearing body, the bearing body has inner ring and outer loop to constitute, places the clearance between inner ring and the outer loop and is provided with a plurality of balls, the gear body the inner ring of bearing body and outer loop structure cross-section all are provided with layered structure, layered structure's central part is provided with the base member layer, all be provided with the pearlite layer from top to bottom in the outside of base member layer, all be provided with the enhancement layer from top to bottom in the outside of pearlite layer, all be provided with the anticorrosive coating from top to bottom in the outside of enhancement layer.

Preferably, the outer ring of the bearing body and the inner peripheral wall of the gear body are fixedly arranged.

Preferably, the matrix layer is formed by adding a carbon adding agent into molten iron and fixing the die.

Preferably, the pearlite layer is in the form of a layered complex in which ferrite thin layers and cementite thin layers are alternately laminated.

Preferably, the reinforcing layer is provided with reinforcing ribs.

Preferably, the form of the anti-corrosion layer is a layer of anti-corrosion resin.

Compared with the prior art, the utility model has the beneficial effects that:

1. the matrix layer, the pearlite layer and the reinforcing layer provided by the utility model enhance the bonding capability of carbon and iron, and the strength of the practical structure is improved through the reinforcing ribs, so that most or even all axial stretching or compression force can be borne;

2. the anti-corrosion layer is coated on the outer surface of the reinforcing layer in the layered structure of the gear body and the bearing body, is in the form of a layer of anti-corrosion resin, has strong adhesive force, good adaptability to deformation and has strong protection effect on the surface of gray cast iron.

Drawings

FIG. 1 is a perspective view of the whole of the present utility model in front cross section;

fig. 2 is an enlarged view of the structure of fig. 1 a according to the present utility model.

In the figure: 1. a gear body; 2. a bearing body; 3. a base layer; 4. a pearlite layer; 5. a reinforcing layer; 6. and an anti-corrosion layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a pearlite gray cast iron for bearing gear, including gear body 1, gear body 1's terminal surface inner ring installs bearing body 2, and bearing body 2 has inner ring and outer loop to constitute, places clearance between inner ring and the outer loop and installs a plurality of balls, and gear body 1, bearing body 2's inner ring and outer loop structure cross-section all are equipped with layered structure, and layered structure's central part is base member layer 3, all is equipped with pearlite layer 4 from top to bottom in the outside of base member layer 3, all is equipped with enhancement layer 5 from top to bottom in the outside of pearlite layer 4, all coats about the outside of enhancement layer 5 and is equipped with anticorrosive coating 6.

The outer ring of the bearing body 2 and the inner peripheral wall of the gear body 1 are welded and fixed; the matrix layer 3 is formed by adding a carbon adding agent into molten iron, fixing the die, and enhancing the combination capability of carbon and iron; the form of the pearlite layer 4 is a lamellar complex phase material in which ferrite thin layers and cementite thin layers are alternately laminated; the reinforcing layer 5 is provided with reinforcing ribs to increase the strength of the gear body 1 and the bearing body 2; the form of the anti-corrosion layer 6 is a layer of anti-corrosion resin, the anti-corrosion resin coating layer has strong adhesive force and good adaptability to deformation, and has strong protection effect on the surface of gray cast iron; v and Ti are added into the ball of the bearing body 2, so that graphite and a matrix in a high-carbon vanadium-titanium gray cast iron structure can be obviously thinned, and hardening phases VC and TiC with extremely high microhardness are formed with carbon respectively, so that the hardness is improved.

Working principle: when the utility model is used, the combination capacity of carbon and iron is enhanced through the matrix layer 3, the pearlite layer 4 and the reinforcing layer 5 in the layered structure of the gear body 1 and the bearing body 2, the strength of the structure is improved through the reinforcing ribs of the reinforcing layer 5, most of even all axial stretching or compression force can be borne, and the anti-corrosion layer 6 coated on the outer surface of the reinforcing layer 5 in the layered structure of the gear body 1 and the bearing body 2 is in the form of a layer of anti-corrosion resin, so that the anti-corrosion resin coating has strong adhesive force, good adaptive deformation capacity and strong protection function on the gray cast iron surface, is beneficial to prolonging the service life of the structure, and has the advantages of simple structure, convenient use and good use effect.

It is noted that relational terms such as first and second, and the like 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. Moreover, 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.

Claims

1. The pearlite gray cast iron for the bearing gear comprises a gear body (1), and is characterized in that: the gear body (1) end face inner ring is provided with bearing body (2), bearing body (2) have inner ring and outer loop to constitute, and the clearance is provided with a plurality of balls between inner ring and the outer loop, gear body (1) the inner ring and the outer loop structure cross-section of bearing body (2) all are provided with layered structure, layered structure's central part is provided with base member layer (3), all be provided with pearlite layer (4) from top to bottom in the outside of base member layer (3), all be provided with enhancement layer (5) from top to bottom in the outside of pearlite layer (4), all be provided with anticorrosive coating (6) from top to bottom in the outside of enhancement layer (5).

2. The pearlite gray cast iron for a bearing gear as set forth in claim 1, wherein: the outer ring of the bearing body (2) and the inner peripheral wall of the gear body (1) are fixedly arranged.

3. The pearlite gray cast iron for a bearing gear as set forth in claim 1, wherein: the matrix layer (3) is formed by adding a carbon adding agent into molten iron and fixing the die.

4. The pearlite gray cast iron for a bearing gear as set forth in claim 1, wherein: the pearlite layer (4) is in the form of a layered complex in which ferrite thin layers and cementite thin layers are alternately laminated.

5. The pearlite gray cast iron for a bearing gear as set forth in claim 1, wherein: the reinforcing layer (5) is provided with reinforcing ribs.

6. The pearlite gray cast iron for a bearing gear as set forth in claim 1, wherein: the form of the anti-corrosion layer (6) is a layer of anti-corrosion resin.