High-performance chilled cast iron plunger

Abstract

The utility model discloses a high-performance chilled cast iron plunger which comprises a plunger body, stress sections are arranged at the two ends of the plunger body, installation sections are arranged at the outward ends of the two stress sections, and the plunger body comprises a high-strength layer, a high-temperature-resistant layer and a waterproof layer. The high-strength plunger has the advantages that the high-strength layer enables the plunger to keep high structural strength and not prone to deformation or damage when the plunger is extruded when an external device is installed and in a high-temperature environment when the plunger operates. The high-temperature-resistant layer effectively isolates the direct influence of the high-temperature environment on the plunger body, and material performance reduction or damage caused by high temperature is prevented. The waterproof layer can resist corrosion of water vapor and other environmental factors, the plunger body is protected against corrosion of the external environment, and the service life of the plunger is prolonged. The stress section has higher strength and toughness, and can better bear various mechanical effects of an external device in the fixing and operating process.

Description

Technical Field

[0001] This utility model belongs to the technical field of chilled cast iron plungers, specifically relating to a high-performance chilled cast iron plunger. Background Technology

[0002] Chilled cast iron, also known as "quenched iron," is produced by using a metal mold with a faster cooling rate for the wear-resistant parts of the casting, while sand molds are used for the remaining parts. By appropriately adjusting the chemical composition of the cast iron (such as reducing the silicon content), a white cast iron structure can be obtained on the wear-resistant surface, while gray and mottled cast iron structures can be obtained in the remaining parts. This results in a casting with both high hardness and wear resistance, as well as good toughness. This type of cast iron is called chilled cast iron. It is commonly used for rolling mill rolls, train wheels, crane wheels, and crusher parts. For special requirements, alloying elements such as chromium and nickel can be added to improve performance.

[0003] When the ends of a chilled cast iron plunger are installed by an external device, the external device will fix the ends of the plunger, at which time the chilled cast iron plunger will be compressed; when the external device operates the chilled cast iron plunger, it will generate high temperature; chilled cast iron plungers are easily corroded by water vapor when exposed to air for a long time; and nowadays there are relatively few chilled cast iron plungers that can solve these problems.

[0004] Therefore, it is necessary to provide a high-performance chilled cast iron plunger to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a high-performance chilled cast iron plunger to solve the technical problems of: when the two ends of the chilled cast iron plunger are installed by an external device, the external device will fix the two ends of the plunger, at which time the chilled cast iron plunger will be squeezed; when the external device operates the chilled cast iron plunger, it will generate high temperature; and the chilled cast iron plunger is easily corroded by water vapor when exposed to air for a long time.

[0006] To solve the above-mentioned technical problems, this utility model provides a high-performance chilled cast iron plunger, comprising: a plunger body, stress sections at both ends of the plunger body, and an installation section at one end of each stress section extending outwards; the plunger body includes a high-strength layer, a high-temperature resistant layer, and a waterproof layer.

[0007] As further explained, the high-strength layer is disposed inside the plunger body, the waterproof layer is disposed outside the plunger body, and the high-temperature resistant layer is disposed between the high-strength layer and the waterproof layer.

[0008] As further explained, the connection between the plunger body and the stress section is provided with a first transition arc surface, and the connection between the stress section and the installation section is provided with a second transition arc surface.

[0009] As further explained, both the first and second transition surfaces are concave arc shapes.

[0010] As further explained, the stress section is made of high-quality alloy steel or high-quality carbon steel and undergoes quenching and tempering heat treatment.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By incorporating a high-strength layer within the plunger body, the plunger maintains high structural strength under pressure during installation of external devices and high-temperature conditions during operation, preventing deformation or damage and thus extending its service life. Simultaneously, the inherent properties of chilled cast iron ensure the hardness and wear resistance of its wear-resistant surfaces.

[0013] 2. The high-temperature protection layer effectively isolates the plunger body from the direct impact of the high-temperature environment, preventing material performance degradation or damage caused by high temperature, and ensuring the stability and reliability of the plunger under high-temperature working conditions.

[0014] 3. The external waterproof layer can resist corrosion from environmental factors such as water vapor, protect the plunger body from external environmental erosion, further extend the service life of the plunger, and reduce performance degradation or failure caused by corrosion.

[0015] 4. By setting a first transition arc surface and a second transition arc surface between the plunger body and the stress section, and between the stress section and the installation section, these concave arc designs help to disperse stress, reduce the risk of damage caused by stress concentration, improve the stability and safety of the overall structure, and better withstand various mechanical actions during the fixing and operation of external devices.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a preferred structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-section of the plunger body of this utility model.

[0021] In the picture:

[0022] 1. Plunger body, 101. High-strength layer, 102. High-temperature resistant layer, 103. Waterproof layer, 2. Stress section, 201. First transition arc surface, 202. Second transition arc surface, 3. Installation section. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1-2 A high-performance chilled cast iron plunger includes: a plunger body 1, stress sections 2 at both ends of the plunger body 1, and an installation section 3 at the outward end of each stress section 2. The plunger body 1 includes a high-strength layer 101, a high-temperature resistant layer 102, and a waterproof layer 103. These functions are integrated into one unit, significantly improving the overall performance of the chilled cast iron plunger and enabling it to maintain good working condition under different operating conditions. This effectively solves the problems faced by chilled cast iron plungers when subjected to extrusion, high temperature, and water vapor corrosion.

[0025] like Figure 2 As shown, the high-strength layer 101 is located inside the plunger body 1, providing the necessary structural strength and wear resistance to ensure that the chilled cast iron plunger is not easily deformed under pressure. The waterproof layer 103 is located on the outside of the plunger body 1, effectively resisting corrosion from environmental factors such as water vapor and extending the service life of the chilled cast iron plunger. The high-temperature resistant layer 102 is located between the high-strength layer 101 and the waterproof layer 103. It effectively isolates the plunger body from the direct effects of high-temperature environments, protecting the internal structure from high-temperature damage.

[0026] like Figure 1 As shown, a first transition arc surface 201 is provided at the connection between the plunger body 1 and the stress section 2, and a second transition arc surface 202 is provided at the connection between the stress section 2 and the mounting section 3. This helps to disperse stress and reduce the risk of damage caused by stress concentration. The presence of the transition arc surfaces makes the overall structure smoother, which is beneficial to improving the stability and safety of the structure.

[0027] like Figure 1 As shown, both the first transition surface 201 and the second transition surface 202 are concave arc shapes. This further refines the stress dispersion effect, allowing the structure to bear stress more evenly when subjected to external forces. It also makes the connection tighter and more reliable, reducing performance degradation or failures caused by improper connections.

[0028] Stress section 2 is made of high-quality alloy steel or high-quality carbon steel and undergoes quenching and tempering heat treatment. The performance of stress section 2 is further improved, exhibiting better comprehensive mechanical properties, such as high strength, high hardness, and good toughness. These improved properties contribute to enhancing the overall stability and reliability of the chilled cast iron plunger.

[0029] All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals.

[0030] This knowledge can be obtained through conventional experimental methods.

[0031] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0032] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-performance chilled cast iron plunger, characterized in that, include: The plunger body (1) has stress sections (2) at both ends and an installation section (3) at one end of each stress section (2). The plunger body (1) includes a high-strength layer (101), a high-temperature resistant layer (102), and a waterproof layer (103).

2. The high-performance chilled cast iron plunger as described in claim 1, characterized in that, The high-strength layer (101) is located inside the plunger body (1), the waterproof layer (103) is located outside the plunger body (1), and the high-temperature resistant layer (102) is located between the high-strength layer (101) and the waterproof layer (103).

3. The high-performance chilled cast iron plunger as described in claim 1, characterized in that, The connection between the plunger body (1) and the stress section (2) is provided with a first transition arc surface (201), and the connection between the stress section (2) and the installation section (3) is provided with a second transition arc surface (202).

4. A high-performance chilled cast iron plunger as described in claim 3, characterized in that, Both the first transition arc surface (201) and the second transition arc surface (202) are concave arc shapes.

5. A high-performance chilled cast iron plunger as described in claim 1, characterized in that, The stress section (2) is made of high-quality alloy steel or high-quality carbon steel and undergoes quenching and tempering heat treatment.

Images