Bimetal pipe metallurgy composite blank making equipment and blank making method

Abstract

The invention belongs to the technical field of bimetal composite pipe blank making, and particularly relates to bimetal pipe metallurgy composite blank making equipment and a blank making method. The device at least comprises a rotatable base; the hollow cylindrical shell is vertically arranged and is fixedly assembled on the upper surface of the base; the supporting seat is fixedly arranged below the center of the hollow cylindrical shell and is rotationally connected with the base; and the forging and pressing mechanism is arranged above the supporting seat. By means of the method, metallurgical bonding of the outer-layer carbon steel base body and the inner-layer corrosion-resistant alloy layer of the bimetal composite blank can be effectively achieved, the bonding strength of the outer-layer carbon steel base body and the inner-layer corrosion-resistant alloy layer is ensured, and a good foundation is laid for follow-up pipe manufacturing procedures such as punching forming and rolling of the blank.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of billet making of double-metal composite pipes, and particularly relates to a double-metal pipe metallurgical composite billet making equipment and a billet making method. BACKGROUND

[0002] Double-metal composite pipes are a high-cost-effective method for solving the corrosion problem of high-H2S, CO2 and Cl - oil and gas media, which is recognized by the petroleum industry. The principle is to form a composite pipe by the composite of two metal materials. The outer metal pipe is mainly responsible for the material strength and load-bearing performance of the pipe, such as tensile, external extrusion deformation, internal pressure rupture, etc. The inner metal pipe is mainly responsible for the corrosion resistance and corrosion prevention of the pipe, so as to ensure that the pipe will not fail due to corrosion, such as wall thickness reduction, corrosion perforation and corrosion cracking, etc. within the expected service life.

[0003] Currently, the development direction of double-metal composite pipes is from mechanical composite to metallurgical composite, so as to obtain higher bonding strength between the outer base layer and the inner corrosion-resistant alloy layer, thereby improving the service life of the composite pipe. Metallurgical composite of the double-metal composite pipe in the billet, followed by subsequent perforation, rolling, size finishing and heat treatment, is the main production method of the current metallurgical seamless double-metal composite pipe. The billet metallurgical composite effect directly affects the quality of the subsequent perforation forming and the pipe material yield.

[0004] Comparative document 1 CN1355074A discloses a layered metal composite pipe process method of interface metallurgical bonding. The process method comprises: a slitting process of cutting the layered metal composite plate of interface metallurgical bonding into strips according to the length and circumference of the composite pipe; a forming and welding process of rolling the cut strips into pipes and sealing welding the base material of the butt joint after forming by high-frequency welding; and an extrusion sealing process of sealing the butt joint of the surface corrosion-resistant layer of the composite pipe by extrusion. The process method saves labor, time and material, and the obtained composite pipe is smooth and flat, and almost no gap can be seen. No matter how the pipe is bent or deformed, the surface corrosion-resistant layer will not fall off or peel off from the base material, which completely solves the sealing problem of the interface metallurgical bonding layered metal composite pipe, thereby completely removing the obstacles for the popularization and application of the interface metallurgical bonding layered metal composite pipe.

[0005] CN107654740A discloses a three-layer metallurgical composite pipe and a processing method thereof. It comprises an outer cladding pipe blank, a base pipe blank and an inner cladding pipe blank, and the outer cladding pipe blank and the base pipe blank, and the base pipe blank and the inner cladding pipe blank are welded at the end faces of both ends respectively; one end of the base pipe blank is provided with a three-way through hole, and the gap between the outer cladding pipe blank and the base pipe blank and the gap between the base pipe blank and the inner cladding pipe blank are communicated with the outside through the three-way through hole. The present application carries out vacuumizing treatment through the three-way through hole, seals the pipe blank after vacuumizing, so that the gap between the cladding pipe blank and the base pipe blank, and the gap between the base pipe blank and the inner cladding pipe blank are in a vacuum state. Therefore, not only can the residual air in the gap be prevented from oxidizing the bonding surface during heating, but also the hollow drum of the finished pipe can be prevented from appearing during pipe blank rolling.

[0006] CN103433636A discloses a method for manufacturing a double-metal metallurgical composite pipe by pressure welding. First, an inner pipe with a tapered flared end is coaxially arranged in an outer pipe to form a pipe blank; then, the pipe blank is passed through an induction heating coil, a ring-shaped positive electrode and a welding core rod arranged in a tail seat, a pressure welding conical flared welding head is fixedly connected to the head of the welding core rod, the pressure welding conical flared welding head is clamped in a pneumatic chuck of a power head of a machine tool moving workbench, the power head pulls the pipe blank to rotate uniformly to the left, the positive electrode is pressed down, and the pipe blank is heated in a V-shaped ring high-frequency current scanning heating zone or a resistance welding electrode pressure heating zone between the positive electrode and the negative electrode of the pressure welding conical flared welding head, so that the surface metal of the bonding surface is melted, and the pipe blank is forced to pass through the axially fixed conical flared welding head to be welded into one piece. None of the above-mentioned documents relates to the metallurgical combination of the bonding surface by frictional intermelting. SUMMARY

[0007] In order to solve the problem of the blank making of the metallurgical composite seamless double-metal composite pipe and lay a good foundation for the subsequent piercing, the present application provides a double-metal pipe metallurgical composite blank making equipment and a blank making method, which can effectively realize the metallurgical combination of the outer layer carbon steel base and the inner layer corrosion-resistant alloy layer of the double-metal composite blank, ensure the bonding strength of the outer layer carbon steel base and the inner layer corrosion-resistant alloy layer, and lay a good foundation for the subsequent pipe making procedures such as piercing forming and rolling of the blank.

[0008] The technical scheme provided by the present application is as follows:

[0009] A double-metal pipe metallurgical composite blank making equipment, at least comprising:

[0010] A rotatable base;

[0011] A vertically arranged hollow cylindrical shell fixedly assembled on the upper surface of the base;

[0012] A support seat is fixedly arranged below the center of the hollow cylindrical shell and rotationally connected with the base;

[0013] And a forging mechanism is arranged above the support seat.

[0014] Based on the above technical scheme, the outer carbon steel base is in a hollow cylindrical shape and is assembled in the hollow cylindrical shell. The rotatable base drives the hollow cylindrical shell to rotate at high speed through the rotating power mechanism. The inner corrosion-resistant alloy is in a cylindrical shape and is arranged at the center of the hollow cylindrical outer carbon steel base. By using the principle of high-temperature deformation of metal materials and the principle of metallurgical composite of high-temperature mutual melting of friction welding, the heated corrosion-resistant alloy cylinder is deformed under pressure, and the outer surface is frictionally melted with the inner surface of the hollow cylindrical outer carbon steel base rotating at high speed, so as to realize metallurgical composite between the two.

[0015] Specifically, the cylindrical inner corrosion-resistant alloy is vertically arranged and is pressure-connected between the forging mechanism and the support seat.

[0016] Specifically, the cylindrical inner corrosion-resistant alloy is in a drum shape, and the outer diameter size of the middle part is slightly larger than the outer diameter size of the two ends.

[0017] Based on the above technical scheme, the drum-shaped outer circumferential contour of the corrosion-resistant alloy cylinder is combined with nitrogen protection, so that the contact position between the outer surface of the corrosion-resistant alloy cylinder and the inner surface of the hollow cylindrical outer carbon steel base gradually moves from the middle part to the two sides, avoiding the wrapping of nitrogen on the frictional bonding surface, and effectively ensuring the integrity of the metallurgical composite surface.

[0018] Specifically, a hollow cylindrical outer carbon steel base is arranged between the cylindrical inner corrosion-resistant alloy and the hollow cylindrical shell, and the hollow cylindrical shell and the hollow cylindrical outer carbon steel base are key-connected.

[0019] Based on the above technical scheme, by means of key connection, the high-speed rotation of the hollow cylindrical shell driving the cylindrical inner corrosion-resistant alloy can be realized, and the assembly and disassembly of the hollow cylindrical shell and the cylindrical inner corrosion-resistant alloy can be realized.

[0020] Specifically, the outer diameter of the cylindrical inner corrosion-resistant alloy is smaller than the inner diameter of the hollow cylindrical outer carbon steel base.

[0021] Specifically, the length of the cylindrical inner corrosion-resistant alloy is greater than the length of the hollow cylindrical outer carbon steel base.

[0022] Specifically, the volume of the cylindrical inner corrosion-resistant alloy is greater than the volume of the hollow cylindrical outer carbon steel base.

[0023] Specifically, the cylindrical inner corrosion-resistant alloy, the hollow cylindrical outer carbon steel base and the hollow cylindrical shell are coaxially arranged.

[0024] Specifically, the base comprises a hollow seat body, the support seat is fixedly arranged in the middle cavity of the seat body, the support seat is rotationally connected to the seat body through a bearing on the outer wall, and the seat body is drivingly connected to a rotary power mechanism.

[0025] Further, the device further comprises an induction heating coil.

[0026] Based on the above technical scheme, the cylindrical inner layer corrosion-resistant alloy can be conveniently heated.

[0027] The application also provides a bimetal tube metallurgical composite blanking method using a bimetal tube metallurgical composite blanking device, comprising the following steps:

[0028] S1, the hollow cylindrical outer layer carbon steel base is assembled in the hollow cylindrical shell through keying;

[0029] S2, the cylindrical inner layer corrosion-resistant alloy is subjected to induction heating and heat preservation, and the heating temperature is the forging pressure temperature of the inner layer corrosion-resistant alloy;

[0030] S3, the heated cylindrical inner layer corrosion-resistant alloy is placed in the hollow cylindrical outer layer carbon steel base and fixed on the support seat, and a pressure bearing seat is placed on the top of the cylindrical inner layer corrosion-resistant alloy;

[0031] S4, the rotary power mechanism drives the hollow cylindrical shell to rotate at high speed, and when the rotating speed reaches a predetermined speed, an axial compression load is applied to the pressure bearing seat through a forging mechanism;

[0032] S5, the cylindrical inner layer corrosion-resistant alloy is subjected to pressure expansion deformation, the outer surface is subjected to friction intermelting with the inner surface of the hollow cylindrical outer layer carbon steel base, and metallurgical composite of the bonding surface is realized;

[0033] S6, when the outer surfaces of the two side ends of the cylindrical inner layer corrosion-resistant alloy are also subjected to friction intermelting with the inner surface of the hollow cylindrical outer layer carbon steel base, the rotary power mechanism stops the rotation of the hollow cylindrical shell, and after the friction surface is cooled, the composite blank is taken out from the hollow cylindrical shell, and the whole blanking process is completed.

[0034] Specifically, steps S1 to S6 are performed under a nitrogen atmosphere.

[0035] Specifically, the axial compression load is applied to the pressure bearing seat through mechanical impact, the impact force causes the cylindrical inner layer corrosion-resistant alloy to deform and fill the inner annulus of the whole hollow cylindrical outer layer carbon steel base.

[0036] Specifically, after the axial compression load is applied, the pressure bearing seat can be tightly fixed by the forging mechanism.

[0037] Compared with the prior art, the application has the following beneficial technical effects:

[0038] The present application provides a bimetal tube metallurgical composite blanking equipment and blanking method, by using the principle of high temperature deformation of metal material and the principle of friction welding high temperature intermelt, the heated corrosion-resistant alloy cylinder is deformed under pressure, the outer surface is frictionally intermelted with the inner surface of the high-speed rotating hollow cylindrical outer layer carbon steel matrix, and the metallurgical composite between the two is realized. The unique drum-shaped design of the outer circumference of the corrosion-resistant alloy cylinder and the nitrogen protection make the contact position of the outer surface of the corrosion-resistant alloy cylinder and the inner surface of the hollow cylindrical outer layer carbon steel matrix gradually from the middle to both sides, avoid the wrapping of nitrogen on the frictional bonding surface, effectively guarantee the integrity of the metallurgical composite surface, and improve the quality of the blanking piece metallurgical composite. Compared with the existing technology of centrifugal casting metallurgical composite blanking, the process of the present application is simpler, the blanking efficiency is higher, and the program and structure size of the blank are more controllable. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structural diagram of an embodiment of the bimetal tube metallurgical composite blanking equipment provided by the present application.

[0040] Figure 2 is a structural diagram of another embodiment of the bimetal tube metallurgical composite blanking equipment provided by the present application.

[0041] Figure 3 is a structural diagram of the cylindrical inner layer corrosion-resistant alloy of the bimetal tube metallurgical composite blanking equipment provided by the present application.

[0042] Figure 4 is a working principle diagram of the bimetal tube metallurgical composite blanking equipment provided by the present application.

[0043] ATTACHMENT Figure 1 , 2 , 3, 4, the structure represented by each reference numeral is listed as follows:

[0044] 1, hollow cylindrical outer layer carbon steel matrix;

[0045] 2, cylindrical inner layer corrosion-resistant alloy;

[0046] 3, hollow cylindrical shell;

[0047] 4, rotating power mechanism;

[0048] 5, support seat;

[0049] 6, pressure receiving seat;

[0050] 7, axial compression load;

[0051] 8, induction heating coil;

[0052] 9, seat body;

[0053] 10. Bearings. Detailed Implementation

[0054] The principles and features of the present invention are described below. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0055] It should be noted that when a part or component is considered to be "connected to," "located on," or "assembled" to another part or component, it can be directly mounted on the other part or component, or it may be located in an intermediate part or component. The terms "left," "right," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0056] Example 1

[0057] like Figure 1 As shown, a bimetallic tube metallurgical composite billet-making device includes at least: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; and a forging mechanism arranged above the support seat 5. In other embodiments, a pressure seat 6 can be arranged above the center of the hollow cylindrical shell 3 to facilitate the forging mechanism to forge the cylindrical inner layer corrosion-resistant alloy through the pressure seat 6. Based on this technical solution, the principle of high-temperature die forging deformation of metal materials and the metallurgical composite principle of high-temperature mutual fusion of friction welding can be utilized to cause the heated corrosion-resistant alloy cylinder to deform under pressure, and the outer surface of the cylinder to undergo frictional mutual fusion with the inner surface of the high-speed rotating hollow cylindrical outer carbon steel matrix, thereby achieving metallurgical composite between the two.

[0058] Example 2

[0059] Based on Example 1, such as Figure 2 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing down the pressure seat 6. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are keyed together. Based on this technical solution, the assembly between the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 can be easily carried out, so that the rotation of the hollow cylindrical shell drives the rotation of the hollow cylindrical outer carbon steel substrate 1.

[0060] Example 3

[0061] Based on Example 2, such asFigure 2 , 3 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing down the pressure seat 6. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are connected by a key. Figure 3 As shown, the cylindrical inner corrosion-resistant alloy 2 is drum-shaped. Based on this technical solution, nitrogen encapsulation at the friction interface can be avoided.

[0062] Example 4

[0063] Based on Example 2, such as Figure 2 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing down the pressure seat 6. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are connected by a key.

[0064] The outer diameter of the cylindrical inner corrosion-resistant alloy 2 is smaller than the inner diameter of the hollow cylindrical outer carbon steel substrate 1. The length of the cylindrical inner corrosion-resistant alloy 2 is greater than the length of the hollow cylindrical outer carbon steel substrate 1. The volume of the cylindrical inner corrosion-resistant alloy 2 is greater than the volume of the hollow cylindrical outer carbon steel substrate 1.

[0065] Example 5

[0066] Based on Example 2, such as Figure 2 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing down the pressure seat 6. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are connected by a key.

[0067] The outer diameter of the cylindrical inner corrosion-resistant alloy layer 2 is smaller than the inner diameter of the hollow cylindrical outer carbon steel substrate 1. The length of the cylindrical inner corrosion-resistant alloy layer 2 is greater than the length of the hollow cylindrical outer carbon steel substrate 1. The volume of the cylindrical inner corrosion-resistant alloy layer 2 is greater than the volume of the hollow cylindrical outer carbon steel substrate 1. The cylindrical inner corrosion-resistant alloy layer 2, the hollow cylindrical outer carbon steel substrate 1, and the hollow cylindrical shell 3 are coaxially arranged.

[0068] Example 6

[0069] Based on Example 2, such as Figure 2 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing down the pressure seat 6. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are connected by a key.

[0070] The base includes a hollow seat body 9, within which a support seat 5 is fixedly mounted. The support seat 5 is rotatably connected to the seat body 9 via a bearing 10 on its outer wall. The seat body 9 is drive-connected to a rotary power mechanism 4. The seat body 9 has a smooth and flat bottom surface. Based on this technical solution, the base can be rotated.

[0071] Example 7

[0072] Based on Example 2, such as Figure 2 As shown, a bimetallic tube metallurgical composite billet-making device includes: a rotatable base; a vertically arranged hollow cylindrical shell 3, which is fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotatably connected to the base; a pressure seat 6 arranged above the center of the hollow cylindrical shell 3; a forging mechanism for pressing down the pressure seat 6; and an induction heating coil 8. A vertically arranged cylindrical inner corrosion-resistant alloy 2 is pressed between the pressure seat 6 and the support seat 5. A hollow cylindrical outer carbon steel substrate 1 is arranged between the cylindrical inner corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer carbon steel substrate 1 are connected by a key.

[0073] The base includes a hollow seat body 9, with a support seat 5 fixedly installed in the central cavity of the seat body 9. The support seat 5 is rotatably connected to the seat body 9 via a bearing 10 on its outer wall. The seat body 9 is driven by a rotary power mechanism 4. The rotary power mechanism can be configured as a drive gear structure to drive the seat body to rotate.

[0074] Example 8

[0075] Based on example 2, as shown in Figure 2 A bimetal tube metallurgical composite blanking equipment, comprising: a rotatable base; a vertically arranged hollow cylindrical shell 3 fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotationally connected with the base; a pressure bearing seat 6 arranged above the center of the hollow cylindrical shell 3; and a forging mechanism for pressing the pressure bearing seat 6. A vertically arranged cylindrical inner layer corrosion-resistant alloy 2 is crimped between the pressure bearing seat 6 and the support seat 5. A hollow cylindrical outer layer carbon steel base 1 is arranged between the cylindrical inner layer corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer layer carbon steel base 1 are key connected.

[0076] Example 9

[0077] Based on example 2, as shown in Figure 2 A bimetal tube metallurgical composite blanking equipment, comprising: a rotatable base; a vertically arranged hollow cylindrical shell 3 fixedly assembled on the upper surface of the base; a support seat 5 fixedly arranged below the center of the hollow cylindrical shell 3, which is rotationally connected with the base; a pressure bearing seat 6 arranged above the center of the hollow cylindrical shell 3; a forging mechanism for pressing the pressure bearing seat 6; and an induction heating coil 8.

[0078] A vertically arranged cylindrical inner layer corrosion-resistant alloy 2 is crimped between the pressure bearing seat 6 and the support seat 5. A hollow cylindrical outer layer carbon steel base 1 is arranged between the cylindrical inner layer corrosion-resistant alloy 2 and the hollow cylindrical shell 3, and the hollow cylindrical shell 3 and the hollow cylindrical outer layer carbon steel base 1 are key connected.

[0079] The cylindrical inner layer corrosion-resistant alloy 2 is drum-shaped. The outer diameter of the cylindrical inner layer corrosion-resistant alloy 2 is smaller than the inner diameter of the hollow cylindrical outer layer carbon steel base 1. The length of the cylindrical inner layer corrosion-resistant alloy 2 is greater than the length of the hollow cylindrical outer layer carbon steel base 1. The volume of the cylindrical inner layer corrosion-resistant alloy 2 is greater than the volume of the hollow cylindrical outer layer carbon steel base 1. The cylindrical inner layer corrosion-resistant alloy 2, the hollow cylindrical outer layer carbon steel base 1 and the hollow cylindrical shell 3 are coaxially arranged.

[0080] The base comprises a hollow seat body 9, and the support seat 5 is fixedly arranged in the middle cavity of the seat body 9. The support seat 5 is rotationally connected with the seat body 9 through a bearing 10 on the outer wall, and the seat body 9 is drivingly connected with a rotary power mechanism 4. The rotary power mechanism 4 can adopt a driving gear which is in meshing transmission with the seat body 9.

[0081] Based on the technical scheme, the outer carbon steel base body is a hollow cylindrical body, is assembled in the hollow cylindrical shell, and the rotatable base body drives the hollow cylindrical shell to rotate at high speed through the rotating power mechanism. The inner corrosion-resistant alloy is a cylindrical body, is arranged at the center of the hollow cylindrical outer carbon steel base body. By using the principle of high-temperature deformation of metal materials and the principle of metallurgical composite of high-temperature mutual melting of friction welding, the outer surface of the deformed corrosion-resistant alloy cylinder after heating is frictionally melted with the inner surface of the hollow cylindrical outer carbon steel base body rotating at high speed, so that the metallurgical composite between the two is realized.

[0082] Example 10

[0083] The metallurgical composite blanking method of the bimetal tube specifically includes the following steps:

[0084] S1, the hollow cylindrical outer carbon steel base body 1 is assembled in the hollow cylindrical shell 3.

[0085] S2, the cylindrical inner corrosion-resistant alloy 2 is heated in the induction heating coil 8 and is kept warm, and the heating temperature is the forging pressure temperature of the cylindrical inner corrosion-resistant alloy 2.

[0086] S3, the heated cylindrical inner corrosion-resistant alloy 2 is placed in the hollow cylindrical outer carbon steel base body 1 and is fixed on the support seat 5, and the pressure bearing seat 6 is placed on the top of the cylindrical inner corrosion-resistant alloy 2.

[0087] S4, the rotating power mechanism 4 drives the hollow cylindrical shell 3 to rotate at high speed, and when the rotating speed reaches a predetermined speed, the axial compression load 7 is applied on the pressure bearing seat 7, as shown in Figure 4 .

[0088] S5, the cylindrical inner corrosion-resistant alloy 2 is deformed and expanded under pressure, the outer surface is frictionally melted with the inner surface of the hollow cylindrical outer carbon steel base body 1, and the metallurgical composite of the bonding surface is realized.

[0089] S6, when the outer surfaces of both sides of the cylindrical inner corrosion-resistant alloy 2 are also frictionally melted with the inner surface of the hollow cylindrical outer carbon steel base body 1, the rotating power mechanism 4 stops the rotation of the hollow cylindrical shell 3, and after the friction surface is cooled, the blank after the composite is taken out from the hollow cylindrical shell 3, and the whole blanking process is completed.

[0090] The whole blanking process of the bimetal tube metallurgical composite blank is carried out in a space full of nitrogen.

[0091] As shown in Figure 4 , the axial compression load 7 is a mechanical impact load, and the impact force makes the inner corrosion-resistant alloy 2 deform and fill the entire annular space of the hollow cylindrical outer carbon steel base body 1.

[0092] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. The illustrative expressions of the above terms in the present specification do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0093] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A bimetallic tube metallurgical compounding apparatus, characterized by, At least comprising: A rotatable base; A vertically arranged hollow cylindrical shell (3) fixedly assembled on the upper surface of the base; A support seat (5) fixedly arranged below the center of the hollow cylindrical shell (3) and rotationally connected with the base; And a forging mechanism arranged above the support seat (5).

2. The bi-metallic tube metallurgical compacting apparatus of claim 1, wherein: A vertically arranged cylindrical inner layer corrosion-resistant alloy (2) is pressed between the forging mechanism and the support seat (5).

3. The bimetallic tube metallurgical compacting apparatus of claim 2, wherein: The cylindrical inner layer corrosion-resistant alloy (2) is drum-shaped.

4. The bimetallic tube metallurgical compacting apparatus of claim 2, wherein: A hollow cylindrical outer layer carbon steel base (1) is arranged between the cylindrical inner layer corrosion-resistant alloy (2) and the hollow cylindrical shell (3), and the hollow cylindrical shell (3) and the hollow cylindrical outer layer carbon steel base (1) are key-connected.

5. The bimetallic tube metallurgical composite blanking equipment according to claim 4, wherein: The outer diameter of the cylindrical inner layer corrosion-resistant alloy (2) is smaller than the inner diameter of the hollow cylindrical outer layer carbon steel base (1); The length of the cylindrical inner layer corrosion-resistant alloy (2) is greater than the length of the hollow cylindrical outer layer carbon steel base (1); The volume of the cylindrical inner layer corrosion-resistant alloy (2) is greater than the volume of the hollow cylindrical outer layer carbon steel base (1).

6. The bimetallic tube metallurgical compacting apparatus of claim 4, wherein: The cylindrical inner layer corrosion-resistant alloy (2), the hollow cylindrical outer layer carbon steel base (1), and the hollow cylindrical shell (3) are coaxially arranged.

7. The bimetallic tube metallurgical compacting apparatus of claim 1, wherein, The base comprises a hollow seat body (9), the support seat (5) is fixedly arranged in the middle cavity of the seat body (9), the support seat (5) is rotationally connected with the seat body (9) through a bearing (10) on the outer wall, and the seat body (9) is drivingly connected with a rotary power mechanism (4).

8. The bimetallic tube metallurgical compacting apparatus according to any one of claims 1 to 7, characterized in that: It further comprises an induction heating coil (8).

9. A method of making a bimetallic tube by metallurgically combining, using the apparatus of any one of claims 1 to 8, a first metal tube and a second metal tube, wherein the first metal tube is made of a first metal and the second metal tube is made of a second metal, and wherein the first metal and the second metal are different. The method comprises the following steps: S1, the hollow cylindrical outer layer carbon steel base (1) is assembled in the hollow cylindrical shell (3) through keying; S2, the cylindrical inner layer corrosion-resistant alloy (2) is heated by induction and kept warm, and the heating temperature is the forging temperature of the inner layer corrosion-resistant alloy; S3, the heated cylindrical inner layer corrosion-resistant alloy (2) is placed in the hollow cylindrical outer layer carbon steel base (1) and fixed on the support seat (5), and a pressure bearing seat (6) is placed on the top of the cylindrical inner layer corrosion-resistant alloy (2); S4, the rotary power mechanism (4) drives the hollow cylindrical shell (3) to rotate at high speed, and when the rotating speed reaches a predetermined speed, an axial compression load is applied on the pressure bearing seat (6) through the forging mechanism; S5, the cylindrical inner layer corrosion-resistant alloy (2) is deformed by pressure expansion, the outer surface is frictionally intermelted with the inner surface of the hollow cylindrical outer layer carbon steel base (1), and the metallurgical composite of the bonding surface is realized; S6, when the outer surfaces of both sides of the cylindrical inner layer corrosion-resistant alloy (2) are also frictionally intermelted with the inner surface of the hollow cylindrical outer layer carbon steel base (1), the rotary power mechanism (4) stops the rotation of the hollow cylindrical shell (3), and after the friction surface is cooled, the composite blank is taken out from the hollow cylindrical shell (3), and the whole blanking process is completed.

10. The bimetallic tube metallurgical composite blanking method according to claim 9, wherein: Steps S1 to S6 are carried out in a nitrogen atmosphere; The axial compression load is applied to the pressure seat (6) by mechanical impact, and the impact force deforms the cylindrical inner layer of corrosion-resistant alloy (2) and fills the entire inner annulus of the hollow cylindrical outer layer of carbon steel base (1).

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