High-hardness seamless steel pipe for hydraulic machine

Abstract

The high-hardness seamless steel pipe for the hydraulic machine comprises a first steel pipe body, a second steel pipe body, a reinforcing flange, an installation piece and a bolt, the second steel pipe body is arranged on one side of the first steel pipe body, the reinforcing flange is arranged on the first steel pipe body, the installation piece is arranged on the second steel pipe body, and the bolt is arranged on the second steel pipe body. The anti-tensile layer is arranged, the corrosion-resistant layer is arranged on the outer side of the first steel pipe body, the anti-tensile layer is arranged on the outer side of the corrosion-resistant layer, and the steel pipe can have higher plasticity when the steel pipe is heated, stretched and perforated through the anti-tensile layers, so that the strength of the steel pipe is improved; according to the steel pipe cooling device, the steel pipe cannot crack after being cooled, the steel pipe can be connected with a workpiece on a hydraulic machine through an internal spline and installed and connected through bolts, the steel pipe and the hydraulic machine can be conveniently installed, and the problem that cracks and bending occur in current cooling is solved.

Description

Technical Field

[0001] The utility model belongs to the technical direction of seamless steel pipes, and specifically relates to a high-hardness seamless steel pipe for a hydraulic press. Background Art

[0002] With the continuous advancement of production technology, more and more materials have appeared. Among them, seamless steel pipes are made of perforated round steel and have no welds on the surface. They are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, jacking pipes, etc. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

[0003] In the research and development of high-torsion spline seamless steel pipes for hydraulic machinery, it is necessary to heat the seamless steel pipe and then use a special mold to pierce it so that splines are formed inside or outside the seamless steel pipe. However, during cooling, cracks and bends occur due to the weak tensile strength. This phenomenon has become a problem that needs to be solved urgently by people in this field. Utility Model Content

[0004] The utility model aims to provide a high-hardness seamless steel pipe for a hydraulic press in accordance with the existing device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-hardness seamless steel pipe for a hydraulic press, comprising a first steel pipe body, a second steel pipe body, a reinforcing flange, a mounting piece and a bolt, wherein the second steel pipe body is arranged on one side of the first steel pipe body, the reinforcing flange is arranged on the first steel pipe body, the mounting piece is arranged on the second steel pipe body, and the bolt is arranged on the reinforcing flange.

[0006] The utility model further describes that an internal spline is arranged on the inner side of the first steel pipe body, a corrosion-resistant layer is arranged inside the first steel pipe body, an anti-tensile layer is arranged on the outer side of the corrosion-resistant layer, and a protective layer is arranged on the outer side of the anti-tensile layer.

[0007] The utility model further describes that a connecting rib is arranged on the inner side of the reinforcing flange, the connecting rib is arranged on the outer side of the first steel pipe body, the reinforcing flange is arranged on the outer side of the first steel pipe body, a first threaded hole is arranged on the reinforcing flange, and is threadedly connected to the bolt through the first threaded hole.

[0008] The utility model further illustrates that the mounting piece is arranged on the outside of the second steel pipe body, a second threaded hole is arranged on the mounting piece, and the mounting piece is threadedly connected with another group of the bolts through the second threaded hole.

[0009] The utility model further illustrates that the second steel pipe body is arranged on one side of the first steel pipe body, and an external spline is arranged on the outer side of the second steel pipe body.

[0010] The utility model further illustrates that the mounting member is arranged on one side of the external spline, a mounting hole is arranged on the inner side of the mounting member, and the mounting member is mounted and connected with the second steel pipe body through the mounting hole.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0012] (1) By providing an anti-stretching layer, a corrosion-resistant layer is provided on the outside of the first steel pipe body, and an anti-stretching layer is provided on the outside of the corrosion-resistant layer. The anti-stretching layer allows the steel pipe to have higher plasticity when being heated, stretched and perforated, thereby improving the strength of the steel pipe and preventing cracks from occurring after cooling;

[0013] (2) A reinforcing flange is provided to connect the rib plate to the main body of the first steel pipe, and a threaded hole is provided on the reinforcing flange, which is threadedly connected with a bolt through the threaded hole, so that the steel pipe can be connected to the workpiece on the hydraulic press through an internal spline and installed and connected through bolts, which facilitates the installation of the steel pipe and the hydraulic press. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the first steel pipe body of the utility model;

[0018] Figure 4 The utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] In the figure: 1. First steel pipe body; 11. Internal spline type; 12. Corrosion-resistant layer; 13. Tensile-resistant layer; 14. Protective layer; 2. Second steel pipe body; 21. External spline type; 3. Reinforcement flange; 31. Connecting rib plate; 4. Mounting parts; 5. Bolts. DETAILED DESCRIPTION

[0020] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0021] See also Figure 1-4 The utility model provides a technical solution: a high-hardness seamless steel pipe for a hydraulic press, comprising a first steel pipe body 1, a second steel pipe body 2, a reinforcing flange 3, a mounting member 4 and a bolt 5, wherein the second steel pipe body 2 is arranged on one side of the first steel pipe body 1, the reinforcing flange 3 is arranged on the first steel pipe body 1, the mounting member 4 is arranged on the second steel pipe body 2, and the bolt 5 is arranged on the reinforcing flange 3;

[0022] An inner spline 11 is provided on the inner side of the first steel pipe body 1, a corrosion-resistant layer 12 is provided inside the first steel pipe body 1, an anti-tensile layer 13 is provided on the outer side of the corrosion-resistant layer 12, and a protective layer 14 is provided on the outer side of the anti-tensile layer 13. By providing the anti-tensile layer 13, the corrosion-resistant layer 12 is provided on the outer side of the first steel pipe body 1, and the anti-tensile layer 13 is provided on the outer side of the corrosion-resistant layer 12. The anti-tensile layer 13 allows the steel pipe to have higher plasticity when being heated, stretched and perforated, so that the strength of the steel pipe is improved, and the steel pipe will not crack after cooling;

[0023] A connecting rib plate 31 is arranged on the inner side of the reinforcing flange 3, and the connecting rib plate 31 is arranged on the outer side of the first steel pipe body 1. The reinforcing flange 3 is arranged on the outer side of the first steel pipe body 1. A first threaded hole is arranged on the reinforcing flange 3, and the first threaded hole is threadedly connected with the bolt 5. By providing the reinforcing flange 3, the connecting rib plate 31 is installed and connected with the first steel pipe body 1, and a threaded hole is arranged on the reinforcing flange 31, and the threaded hole is threadedly connected with the bolt 5, so that the steel pipe can be connected with the workpiece on the hydraulic press through the internal spline 11, and the bolt 5 is installed and connected, so that the steel pipe and the hydraulic press can be conveniently installed;

[0024] The mounting member 4 is arranged on the outer side of the second steel pipe body 2, and a second threaded hole is arranged on the mounting member 4, and is threadedly connected with another group of bolts 5 through the second threaded hole. The second steel pipe body 2 is arranged on one side of the first steel pipe body 1, and an external spline 21 is arranged on the outer side of the second steel pipe body 2. The mounting member 4 is arranged on one side of the external spline 21, and a mounting hole is arranged on the inner side of the mounting member 4, and is installed and connected with the second steel pipe body 2 through the mounting hole.

[0025] When the user is using it, a corrosion-resistant layer 12 is provided on the outer side of the first steel pipe body 1, and an anti-tensile layer 13 is provided on the outer side of the corrosion-resistant layer 12. The anti-tensile layer 13 allows the steel pipe to have higher plasticity when it is heated, stretched and pierced, and the strength of the steel pipe is increased, so that the steel pipe will not crack after cooling. The connecting rib plate 31 is installed and connected to the first steel pipe body 1, and a threaded hole is provided on the reinforcing flange 31, and is threadedly connected to the bolt 5 through the threaded hole, so that the steel pipe can be connected to the workpiece on the hydraulic press through the internal spline 11, and installed and connected through the bolt 5, which is convenient for the installation of the steel pipe and the hydraulic press.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A high-hardness seamless steel pipe for a hydraulic press, comprising a first steel pipe body (1), a second steel pipe body (2), a reinforcing flange (3), a mounting member (4) and a bolt (5), characterized in that: The second steel pipe body (2) is arranged on one side of the first steel pipe body (1), the reinforcing flange (3) is arranged on the first steel pipe body (1), the mounting member (4) is arranged on the second steel pipe body (2), and the bolt (5) is arranged on the reinforcing flange (3).

2. The high hardness seamless steel pipe for hydraulic press according to claim 1, characterized in that: An internal spline (11) is provided on the inner side of the first steel pipe body (1), a corrosion-resistant layer (12) is provided inside the first steel pipe body (1), an anti-tensile layer (13) is provided on the outer side of the corrosion-resistant layer (12), and a protective layer (14) is provided on the outer side of the anti-tensile layer (13).

3. The high hardness seamless steel pipe for hydraulic press according to claim 2, characterized in that: A connecting rib (31) is arranged on the inner side of the reinforcing flange (3), and the connecting rib (31) is arranged on the outer side of the first steel pipe body (1). The reinforcing flange (3) is arranged on the outer side of the first steel pipe body (1), and a first threaded hole is arranged on the reinforcing flange (3), and is threadedly connected to the bolt (5) through the first threaded hole.

4. The high hardness seamless steel pipe for hydraulic press according to claim 3, characterized in that: The mounting member (4) is arranged on the outside of the second steel pipe body (2), and a second threaded hole is arranged on the mounting member (4), and is threadedly connected with another group of bolts (5) through the second threaded hole.

5. The high hardness seamless steel pipe for hydraulic press according to claim 4, characterized in that: The second steel pipe body (2) is arranged on one side of the first steel pipe body (1), and an external spline (21) is arranged on the outer side of the second steel pipe body (2).

6. The high-hardness seamless steel pipe for hydraulic press according to claim 5, characterized in that: The mounting member (4) is arranged on one side of the external spline (21), a mounting hole is arranged on the inner side of the mounting member (4), and the mounting member (4) is mounted and connected to the second steel pipe body (2) through the mounting hole.

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