High-strength corrosion-resistant pipe type forge piece for marine machinery

Abstract

The utility model discloses a high-strength corrosion-resistant tubular forge piece for ocean machinery, which relates to the technical field of tubular forge pieces and comprises a tubular forge piece body, a first connecting disc and a second connecting disc are respectively and fixedly sleeved at two ends of the tubular forge piece body, and a protruding piece is fixedly connected with one side of the first connecting disc. One end of the first connecting disc is fixedly connected with a protruding piece, the other end of the protruding piece is fixedly connected with a first meshing tooth, a groove is formed in one side of the second connecting disc, a second meshing tooth is fixedly connected to the inner wall of the groove, and a plurality of threaded holes are formed in the first connecting disc and the second connecting disc. According to the pipe-shaped forge piece joint protection device, effective protection on the pipe-shaped forge piece joint is achieved, the problem that when a traditional pipe-shaped forge piece made of precipitation hardening stainless steel is machined, the joint is bent or deformed due to machining reasons, and consequently the joint is more prone to being corroded by seawater is solved, and the pipe-shaped forge piece joint protection device has practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of tube forgings, in particular to a high-strength corrosion-resistant tube forging for marine machinery. Background Art

[0002] Special forgings include ring forgings, cold forgings, isothermal forgings, non-ferrous metal and alloy forgings, powder metallurgy forgings, special forgings, stainless steel forgings, and tubular forgings. During the forging process of tubular forgings, very high requirements are placed on the forging process and process control, especially the control of the curvature of the forgings. Among them, precipitation hardening stainless steel has good corrosion resistance, which is better than that of general martensitic stainless steel and similar to that of general austenitic stainless steel. At the same time, the strength of precipitation hardening stainless steel is greater than that of austenitic stainless steel, and it has good cutting performance. It can be welded without preheating and no local annealing is required after welding. It is mainly used to manufacture corrosion-resistant and high-strength parts such as jet engine compressor casings and large turbine last stage blades.

[0003] At present, tubular forgings for marine machinery are generally made of precipitation-hardened stainless steel, which can effectively improve the strength and corrosion resistance of tubular forgings. However, during processing, the joints of precipitation-hardened stainless steel may bend or deform due to processing reasons, resulting in local damage and defects to the chromium oxide protective film of the precipitation-hardened stainless steel, making the joints of the precipitation-hardened stainless steel more susceptible to seawater erosion than other positions of the pipe body. Based on this, we propose an improved high-strength and corrosion-resistant tubular forging for marine machinery. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-strength corrosion-resistant tubular forging for marine machinery, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-strength, corrosion-resistant tubular forging for marine machinery comprises a tubular forging body, wherein two ends of the tubular forging body are respectively fixedly sleeved with a connecting plate 1 and a connecting plate 2, one side of the connecting plate 1 is fixedly connected with a protruding piece, the other end of the protruding piece is fixedly connected with a biting tooth 1, one side of the connecting plate 2 is provided with a groove, the inner wall of the groove is fixedly connected with a biting tooth 2, and a plurality of threaded holes are provided on the connecting plate 1 and the connecting plate 2.

[0007] As a further solution of the utility model, a protective sleeve is fixedly connected between the connecting disk 1 and the connecting disk 2, and an anti-corrosion coating is sprayed on the outer wall of the protective sleeve.

[0008] As a further solution of the utility model, the protective sleeve is fixedly sleeved on the outer wall of the tubular forging body, and the anti-corrosion coating is made of seawater anti-corrosion paint.

[0009] As a further solution of the utility model, the biting teeth 1 and the biting teeth 2 are both arranged in a ring-shaped distribution, and the biting teeth 1 and the biting teeth 2 are meshed with each other.

[0010] As a further solution of the utility model, the protrusion is slidably sleeved in the groove, and the protrusion and the groove are matched with each other.

[0011] As a further solution of the utility model, the cross section of the protruding piece is a trapezoidal structure, and the cross section of the biting tooth 1 and the biting tooth 2 is a corrugated structure.

[0012] As a further solution of the present invention, the tubular forging body, the first connecting plate and the second connecting plate are all made of precipitation hardened stainless steel.

[0013] The beneficial effects of the utility model are as follows:

[0014] By providing the connection plate 1, the connection plate 2, the protruding piece, the groove, the biting tooth 1 and the biting tooth 2 structure, when the connection plate 1 and the connection plate 2 are connected, the protruding piece is inserted into the groove, and the biting tooth 1 is engaged with the biting tooth 2, which can effectively prevent the external seawater from penetrating into the connection to cause corrosion;

[0015] By sleeve-connecting a protective sleeve between the first connecting plate and the second connecting plate and spraying anti-corrosion coating on the outer end of the protective sleeve, multiple anti-corrosion protection is formed, which effectively prolongs the service life of the pipe forging and the maintenance cycle, and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of one side of a high-strength, corrosion-resistant tubular forging for marine machinery according to the utility model;

[0017] Figure 2 This is a schematic diagram of the other side structure of a high-strength corrosion-resistant tubular forging for marine machinery according to the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of one side of a high-strength, corrosion-resistant tubular forging for marine machinery according to the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the other side of a high-strength corrosion-resistant tubular forging for marine machinery according to the utility model.

[0020] In the figure: 1. Tube forging body; 2. Connecting plate 1; 3. Connecting plate 2; 4. Threaded hole; 5. Protruding part; 6. Biting tooth 1; 7. Groove; 8. Biting tooth 2; 9. Protective cover; 10. Anti-corrosion coating. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a high-strength corrosion-resistant tubular forging for marine machinery includes a tubular forging body 1, with a connecting plate 1 2 and a connecting plate 2 3 fixedly sleeved at both ends of the tubular forging body 1, a protruding piece 5 fixedly connected to one side of the connecting plate 1 2, and a biting tooth 1 6 fixedly connected to the other end of the protruding piece 5, a groove 7 is provided on one side of the connecting plate 2 3, and a biting tooth 2 8 is fixedly connected to the inner wall of the groove 7, and a plurality of threaded holes 4 are provided on the connecting plate 1 2 and the connecting plate 2 3.

[0023] In this embodiment, a protective sleeve 9 is fixedly connected between the connecting plate 1 2 and the connecting plate 2 3, and an anti-corrosion coating 10 is sprayed on the outer wall of the protective sleeve 9. The protective sleeve 9 is fixedly sleeved on the outer wall of the tubular forging body 1, and the anti-corrosion coating 10 is made of seawater anti-corrosion paint. The protective sleeve 9 and the anti-corrosion coating 10 form multiple protections, which can effectively extend the maintenance period and service life of the tubular forging.

[0024] In this embodiment, the bite teeth 1 6 and the bite teeth 2 8 are arranged in a ring-shaped distribution, and the bite teeth 1 6 and the bite teeth 2 8 are meshed with each other. The meshing method can effectively resist the corrosion of the joints of the pipe forgings by external seawater.

[0025] In this embodiment, the protruding member 5 is slidably sleeved in the groove 7, and the protruding member 5 and the groove 7 are matched with each other, and the cross-section of the groove 7 is the same as the cross-section of the protruding member 5.

[0026] In this embodiment, the cross section of the protruding member 5 is a trapezoidal structure, which is convenient for guiding, and the cross section of the biting tooth 1 6 and the biting tooth 2 8 is a corrugated structure, which prolongs the contact area and improves the sealing performance.

[0027] In this embodiment, the tubular forging body 1, the connecting plate 1 2 and the connecting plate 2 3 are all made of precipitation hardened stainless steel, so that the tubular forging has high strength and corrosion resistance.

[0028] It should be noted that the utility model is a high-strength, corrosion-resistant tubular forging for marine machinery. When in use, the connecting plate 1 2 and the connecting plate 2 3 are sleeved on the tubular forging body 1, and the connecting plate 1 2 and the connecting plate 2 3 are connected at the joint of the tubular forging body 1 by bolts. During the installation process, the protrusion 5 is gradually stuck into the groove 7 and fixed, and the biting tooth 1 6 engages with the biting tooth 2 8 to strengthen the protection of the connection of the tubular forging body 1. At the same time, during the use of the tubular forging body 1, the protective cover 9 and the anti-corrosion coating 10 form multiple protections, which can effectively improve the protection ability of the tubular forging body 1, so that it can cope with work under conditions of high salinity, high humidity and strong acidity and alkali.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength, corrosion-resistant tubular forging for marine machinery, comprising a tubular forging body (1), characterized in that: The two ends of the tubular forging body (1) are respectively fixedly sleeved with a connection plate 1 (2) and a connection plate 2 (3); one side of the connection plate 1 (2) is fixedly connected with a protruding piece (5); the other end of the protruding piece (5) is fixedly connected with a bite tooth 1 (6); one side of the connection plate 2 (3) is provided with a groove (7); the inner wall of the groove (7) is fixedly connected with a bite tooth 2 (8); and the connection plate 1 (2) and the connection plate 2 (3) are both provided with a plurality of threaded holes (4).

2. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 1, characterized in that: A protective sleeve (9) is fixedly connected between the connecting plate 1 (2) and the connecting plate 2 (3), and an anti-corrosion coating (10) is sprayed on the outer wall of the protective sleeve (9).

3. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 2, characterized in that: The protective sleeve (9) is fixedly sleeved on the outer wall of the tubular forging body (1), and the anti-corrosion coating (10) is made of seawater anti-corrosion paint.

4. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 1, characterized in that: The biting teeth 1 (6) and the biting teeth 2 (8) are both arranged in a ring-shaped distribution, and the biting teeth 1 (6) and the biting teeth 2 (8) are meshed with each other.

5. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 1, characterized in that: The protruding piece (5) is slidably sleeved in the groove (7), and the protruding piece (5) and the groove (7) are matched with each other.

6. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 1, characterized in that: The cross section of the protruding piece (5) is a trapezoidal structure, and the cross sections of the biting tooth 1 (6) and the biting tooth 2 (8) are corrugated structures.

7. The high-strength corrosion-resistant tubular forging for marine machinery according to claim 1, characterized in that: The tubular forging body (1), the first connecting plate (2) and the second connecting plate (3) are all made of precipitation hardened stainless steel.

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