Gear ring forge piece

Abstract

The utility model discloses a gear ring forge piece which comprises a tooth root and a tooth part, the tooth root and the tooth part are both made of alloy steel, the thickness of the tooth part is 8 mm, the thickness of the tooth root is 5 mm, guide grooves are formed in the tooth root and the tooth part, the surface of the tooth part is covered with an adaptive coating, and the end face of the tooth root and the contact face of a shaft are polished to be smooth and covered with a molybdenum disulfide coating. And a sealing ring is arranged at the joint of the tooth root and the tooth part. According to the gear ring forge piece, the guide groove is formed, so that the gear ring is convenient to mount and dismount, and the mounting efficiency is improved; the low-expansion high-temperature alloy steel is selected and coated with the adaptive coating, so that better corrosion resistance is achieved, and the high-temperature strength and stability are improved; by arranging the sealing ring, the sealing and protection measures of the tooth part and the tooth root are added, so that the influence of corrosive gas or liquid on the material performance is prevented; a plurality of stress release grooves and micropores are formed in the surface of the tooth root, and induction quenching is carried out, so that the internal structure is optimized, stress concentration is reduced, and the overall strength and durability are improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical transmission, in particular to a gear ring forging. Background Art

[0002] Ring gear forgings are annular mechanical components with tooth shapes that can transmit motion and power through continuous meshing. Ring gear forgings are widely used in mining machinery, petrochemicals, automobile manufacturing and other fields, and are an important part of gear transmission systems.

[0003] The manufacturing process of gear ring forgings includes cutting, heating, punching, mandrel reaming and shaping. According to the national standard JB / T 6395-2010 "Technical Conditions for Large Gear and Gear Ring Forgings", these forgings have clear technical requirements, inspection rules, test methods, quality certificates and markings. The materials of gear ring forgings usually include 20CrMnTi, 40Cr, 42CrMo, etc. The selection of these materials depends on the specific requirements and performance standards of the application. With the development of China's gear forging industry, the gear industry has become one of the largest industries in China's mechanical basic parts and occupies an important position in the global market.

[0004] When traditional gear ring forgings are used in high temperature, low temperature or corrosive environment, their performance is often reduced or damaged due to degradation of material properties or improper structural design. Therefore, a gear ring forging is proposed. Utility Model Content

[0005] The utility model aims to provide a gear ring forging which has an optimized structural design, reasonable material selection and can adapt to high temperature, low temperature or corrosive environment.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model is: a gear ring forging, comprising: a tooth root and a tooth portion, the tooth root and the tooth portion are both made of alloy steel, the thickness of the tooth portion is 5 mm, the thickness of the tooth root is 8 mm, the surface of the tooth portion is covered with an adaptive coating, the adaptive coating is a ceramic coating, the end face of the tooth root and the contact surface of the shaft are polished and smooth, and are covered with a molybdenum disulfide coating for reducing stress concentration and wear, a sealing ring is provided at the connection between the tooth root and the tooth portion, and guide grooves are provided on the tooth root and the tooth portion.

[0007] Preferably, the base material of the ring gear forging is 316L stainless steel.

[0008] Preferably, the surfaces of the tooth root and the tooth portion are subjected to nickel-phosphorus chemical plating to form a uniform corrosion-resistant layer.

[0009] Preferably, the tooth root and the tooth portion are both made of alloy steel with a low thermal expansion coefficient.

[0010] Preferably, the tooth root and the tooth portion are both alloy steel of 4J42 alloy material, the tooth root has higher toughness, and the tooth portion has higher hardness.

[0011] Preferably, a plurality of stress release grooves and micro holes are provided on the tooth root.

[0012] Preferably, the tooth root and the surface of the tooth portion are both subjected to induction hardening treatment.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The gear ring forging is convenient for installation and disassembly of the gear ring by providing a guide groove, thereby improving installation efficiency; low-expansion high-temperature alloy steel is selected and coated with an adaptive coating, which has better corrosion resistance and improves high-temperature strength and stability, and is suitable for corrosive and high-temperature environments; sealing rings are provided to increase the sealing and protection measures of the teeth and tooth roots to prevent the influence of environmental factors on material properties, such as corrosive gases or liquids; several stress relief grooves and micropores are opened on the tooth root surface, and induction quenching is performed to optimize the internal structure, reduce stress concentration, and improve overall strength and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the gear ring forging of the utility model;

[0016] Figure 2 It is a front view schematic diagram of the gear ring forging of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the end face of the gear ring forging of the utility model.

[0018] In the figure: 100, tooth root; 200, tooth portion; 300, sealing ring; 400, adaptive coating; 500, guide groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3The present embodiment provides a gear ring forging, including: a tooth root 100 and a tooth portion 200, both of which are alloy steels, and 316L stainless steel is selected as the base material of the gear ring forging. Both of the tooth root 100 and the tooth portion 200 are alloy steels with low thermal expansion coefficients, specifically alloy steels of 4J42 alloy material, the tooth root 100 has high toughness, and the tooth portion 200 has high hardness to reduce dimensional changes caused by temperature changes, the thickness of the tooth portion is 5 mm, and the thickness of the tooth root is 8 mm to adapt to performance changes at different temperatures, and guide grooves 500 are provided on the tooth root 100 and the tooth portion 200 to facilitate installation and removal of the gear ring and improve installation efficiency, The surfaces of the tooth root 100 and the tooth portion 200 are treated with nickel-phosphorus chemical plating to form a uniform corrosion-resistant layer. The surface of the tooth portion 200 is covered with an adaptive coating 400, which is a ceramic coating to improve its corrosion resistance in a corrosive environment. The end face and the shaft contact surface of the tooth root 100 are polished and smooth, and are coated with a molybdenum disulfide coating for reducing stress concentration and wear. The tooth root 100 is provided with a number of stress release grooves and micropores (micropore diameter is not greater than 0.5 mm), which are ways to release thermal stress and reduce thermal stress concentration. A sealing ring 300 is provided at the connection between the tooth root 100 and the tooth portion 200 to prevent the intrusion of corrosive media.

[0021] Structural principle:

[0022] like Figure 1-Figure 3 As shown, 316L stainless steel material is selected as the base material of the gear ring forging, and the surface of the gear ring forging is treated with nickel-phosphorus chemical plating to form a uniform corrosion-resistant coating. The thickness of the tooth part and the tooth root are designed to be 5mm and 8mm respectively to adapt to the performance changes at different temperatures. A sealing ring is designed at the connection part of the gear ring forging to prevent the intrusion of corrosive media. It can meet the application requirements in high temperature, low temperature or corrosive environment, and has broad market application prospects.

[0023] In summary, the gear ring forging, by providing a guide groove, is convenient for the installation and disassembly of the gear ring, thereby improving the installation efficiency; low expansion high temperature alloy steel is selected, and an adaptive coating 400 is applied, which has better corrosion resistance and improves high temperature strength and stability, and is suitable for corrosive and high temperature environments; a sealing ring 300 is provided to increase the sealing and protection measures of the tooth portion and tooth root to prevent the influence of environmental factors on material properties, such as corrosive gases or liquids; a number of stress relief grooves and micropores are opened on the surface of the tooth root 100, and induction quenching is performed to optimize the internal structure, reduce stress concentration, and improve the overall strength and durability.

[0024] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ring gear forging, characterized in that: include: A tooth root (100) and a tooth portion (200), wherein the tooth root (100) and the tooth portion (200) are both made of alloy steel, the thickness of the tooth portion is 5 mm, and the thickness of the tooth root is 8 mm. The surface of the tooth portion (200) is covered with an adaptive coating (400), and the adaptive coating (400) is a ceramic coating. The end face of the tooth root (100) and the contact surface of the shaft are polished and smooth, and are covered with a molybdenum disulfide coating for reducing stress concentration and wear. A sealing ring (300) is provided at the connection between the tooth root (100) and the tooth portion (200), and guide grooves (500) are provided on the tooth root (100) and the tooth portion (200).

2. A ring gear forging according to claim 1, characterized in that: The base material of the ring gear forging is 316L stainless steel.

3. The ring gear forging according to claim 1, characterized in that: The surfaces of the tooth root (100) and the tooth portion (200) are subjected to nickel-phosphorus chemical plating to form a uniform corrosion-resistant layer.

4. A ring gear forging according to claim 3, characterized in that: The tooth root (100) and the tooth portion (200) are both made of alloy steel with a low thermal expansion coefficient.

5. A ring gear forging according to claim 4, characterized in that: The tooth root (100) and the tooth portion (200) are both made of alloy steel of 4J42 alloy material.

6. A ring gear forging according to claim 5, characterized in that: The tooth root (100) is provided with a plurality of stress release grooves and micro holes.

7. A ring gear forging according to claims 1-6, characterized in that: The surfaces of the tooth root (100) and the tooth portion (200) are both subjected to induction hardening treatment.

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