CN111229912A - A tantalum-made corrugated expansion joint forming device and method - Google Patents

Abstract

The invention discloses a tantalum-made corrugated expansion joint forming device and method. The tantalum-made corrugated expansion joint forming device comprises a cutter mechanism and a split mold. The mold sleeve is set on the main shaft, and the split mold includes a plurality of tile-shaped dies and fixed flanges installed at both ends of the tile-shaped dies. The outer side walls of the tile-shaped dies are provided with corrugated grooves. The depth is less than the thickness of the tile-shaped die, and both ends of the tile-shaped die are provided with connecting blocks, and the connecting blocks and the fixing flange are detachably connected; the method includes the following steps: 1. Assembling the split mold and installing the tantalum lining 2. Installing the cutter mechanism and the split mold; 3. Forming the tantalum-made corrugated expansion joint; The design of the invention is reasonable, and the processing and manufacture of the tantalum-made corrugated expansion joint can be stably performed by using a lathe.

Description

A tantalum-made corrugated expansion joint forming device and method

technical field

The invention belongs to the technical field of tantalum-made corrugated expansion joint forming, and in particular relates to a tantalum-made corrugated expansion joint forming device and method.

Background technique

Tantalum and tantalum alloys have excellent corrosion resistance. In the chemical industry, tantalum is an ideal corrosion-resistant material. Especially in some severe corrosion conditions, tantalum has corrosion resistance and stability unmatched by other metals. However, because tantalum materials are relatively expensive, in order to save equipment manufacturing costs, tantalum chemical equipment generally adopts a loose lining structure, and only thin-walled tantalum materials are used as the inner lining of the equipment. Since the tantalum lining layer and the base layer cannot be completely fitted and the thermal expansion coefficient is different, a large thermal stress is often generated in the tantalum lining layer. This thermal stress may cause the tantalum lining layer or its welding seam to crack, thereby Leakage failure occurs, which greatly reduces the service life of tantalum loose-lined equipment.

The expansion joint has the functions of absorbing external force and compensating for displacement. Therefore, the problem of cracking of the tantalum lining weld seam caused by thermal stress can be eliminated by setting a corrugated expansion joint on the tantalum lining layer. The tantalum corrugated expansion joint can not only effectively compensate the thermal stress deformation of the tantalum lining layer, but also greatly improve the rigidity of the tantalum lining layer, thereby improving the reliability of such containers and prolonging the service life of the equipment. However, at present, the forming technology of tantalum corrugated expansion joints is immature, and there is no ready-made processing equipment available in China. Therefore, researching a simple and efficient forming device for tantalum corrugated expansion joints with good forming quality, low production cost and high efficiency has become a technical problem that needs to be solved urgently. .

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a tantalum-made corrugated expansion joint forming device, which is simple in structure and reasonable in design, and can stably process and manufacture the tantalum-made corrugated expansion joint by using a lathe , easy to operate, low production cost, easy to popularize and use.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is: a tantalum-made corrugated expansion joint forming device, which is characterized in that it includes a tool mechanism installed on a machine tool and a split mold installed on the machine tool, the split body A tantalum liner is provided on the outer casing of the die, a main shaft and a tailstock are arranged on the machine tool, a four-jaw chuck is installed on the main shaft, and a top is arranged on the tailstock, and one end of the split mould is installed on the four-jaw chuck. On the chuck, a support plate is installed at the other end of the split mold, and a boss is provided on the side of the support plate close to the split mold, the boss extends into the other end of the split mold, and the boss is The outer side of the split mold is in contact with the inner side of the split mold, the side of the support plate close to the split mold is in contact with the other end of the split mold, and the top extends into the center of the support disk;

The split mold includes a plurality of tile-shaped molds and fixed flanges installed at both ends of the tile-shaped molds. The cross-section enclosed by the plurality of tile-shaped molds is circular. The outer side wall of the die is provided with corrugated grooves, and the number of the corrugated grooves is multiple, and the plurality of the corrugated grooves are arranged along the length direction of the tile-shaped die, and the depth of the corrugated grooves is smaller than that of the tile-shaped die. The thickness of the sheet die;

Both ends of each tile-shaped die are provided with connecting blocks, the connecting blocks and the fixing flange are detachably connected, and the cutter mechanism can move toward or away from the split die.

The above-mentioned tantalum-made corrugated expansion joint forming device is characterized in that: the connecting block is a fan-shaped connecting block, and the outer arc of the fan-shaped connecting block is connected with the inner arc of the tile-shaped die by welding;

The corrugated grooves are composed of corrugated groove segments arranged on the outer side walls of each tile-shaped die, and the structures of each of the corrugated groove segments are the same;

The two adjacent tile-shaped molds are respectively a first tile-shaped mold and a second tile-shaped mold, the first tile-shaped mold is provided with a first tongue groove and a first tenon, the first tile-shaped mold A second tenon and a second tenon are provided on the two tile-shaped die, the second tenon extends into the first tenon and the first tenon extends into the second tenon.

The above-mentioned tantalum-made corrugated expansion joint forming device is characterized in that: the tool mechanism comprises a tool handle, a tool holder installed on one end of the tool handle and a rotary wheel installed on the tool holder, and the tool holder is a U-shaped knife The tool holder is provided with a pin shaft, the pin shaft is sleeved with a bearing, the tool holder is provided with a mounting hole for the pin shaft to pass through, and the rotary wheel is sleeved on the bearing.

The above-mentioned tantalum-made corrugated expansion joint forming device is characterized in that: the outer circumferential surface of the rotary wheel is provided with a blade portion, the blade portion is located at the center of the outer circumferential surface of the rotary wheel, and the blade portion is The outer diameter of the rotary wheel is larger than 15mm to 20mm.

The above-mentioned tantalum-made corrugated expansion joint forming device is characterized in that: the inner side of the corrugated groove is composed of a first circular arc segment, a first inclination segment, a second circular arc segment, and a second inclination connected in sequence. The first circular arc segment and the third circular arc segment are arranged symmetrically with respect to the second circular arc segment, and the first inclination segment and the second inclination segment are related to the second circular arc segment. Symmetrical arrangement, the radian of the first circular arc segment and the third circular arc segment is smaller than the radian of the second circular arc segment, and the radius of the circle where the first circular arc segment and the third circular arc segment are located is smaller than that of the second circular arc The radius of the circle where the segment is located, and both the first arc segment and the third arc segment are connected to the outer sidewall of the tile-shaped die.

The above-mentioned tantalum-made corrugated expansion joint forming device is characterized in that: the distance between two adjacent corrugated grooves is 70 mm to 100 mm, and the bottom of the corrugated groove is separated from the outer wall of the tile-shaped die. The spacing is 3mm-6mm, and the width of the top of the corrugated groove is 12mm-14mm.

At the same time, the present invention also discloses a method for forming a tantalum-made corrugated expansion joint with simple steps, reasonable design, convenient implementation and good use effect. The method is characterized in that the method includes the following steps:

Step 1. Assemble the split mold and install the tantalum liner:

Step 101, splicing a plurality of tile-shaped dies, and installing fixed flanges on both ends of the plurality of tile-shaped dies to obtain a split model; wherein, both ends of the tile-shaped dies are provided with connections Blocks, connecting blocks and fixing flanges through bolts;

Step 102, sleeve the tantalum liner on the outer side of the split mold; wherein, the inner side of the tantalum liner is in contact with the outer side of the split mold, and the length of the tantalum liner is less than the length of the split mold;

Step 2. Install the tool mechanism and split mold:

Step 201: Install a tool holder on the tool holder, and install a rotary wheel on the tool holder to complete the assembly of the tool mechanism; wherein, a pin shaft is passed through the tool holder, a bearing is sleeved on the pin shaft, and the rotary wheel is It is sleeved on the bearing, and the outer circumferential surface of the rotary wheel is provided with a blade;

Step 202: Install the tool mechanism on the machine tool, and install the split mold with the tantalum liner on the main shaft of the machine tool;

Step 3. Forming of tantalum corrugated expansion:

Step 301: Adjust the cutter mechanism to move in the direction of the split mold, when the cutter mechanism fits the outer side wall of the tantalum liner outside the split mold; adjust the tool mechanism to move along the length direction of the split mold until the blade portion is along the thickness direction of the circumferential side surface. The center coincides with the center projection of the corrugated groove;

Step 302: Operate the rotation of the main shaft, the rotation of the main shaft drives the rotation of the split mold, and the rotation of the split mold drives the rotation of the tantalum liner; during the rotation of the tantalum liner, the blade radially feeds into contact with the tantalum liner, and the blade touches the tantalum liner. The barrel wall of the liner is spinning, when the barrel wall of the edge spinning tantalum liner contacts the bottom of the corrugated groove, the radial feed of the blade is stopped to complete the processing of a corrugated expansion joint;

Step 303, the blade part retreats in the radial direction, and the adjusting blade part moves along the length direction of the split mold until the center of the blade part in the thickness direction of the circumferential side surface coincides with the center projection of the next corrugated groove;

Step 304, repeating step 302 to complete the processing of the next corrugated expansion joint;

Step 305: Repeat steps 303 and 304 until the processing of the corrugated expansion joints at the multiple corrugated grooves of the tantalum liner is completed;

Step 4. Removal of the tantalum corrugated expansion joint forming device:

Step 401, removing the split mold and the processed tantalum liner from the machine tool;

Step 402 , removing the bolts and the fixing flange, and taking out the tile-shaped die from the processed tantalum liner to obtain a tantalum-made corrugated expansion joint.

The above method is characterized in that: in step 302, the rotation speed of the main shaft is 30r/min～50r/min;

In step 302, the radial feed rate of the blade portion is 0.4 mm/min˜0.6 mm/min.

The above method is characterized in that: in step 102, the wall thickness of the tantalum liner is 0.5 mm˜2 mm.

Compared with the prior art, the present invention has the following advantages:

1. The structure is simple, the design is reasonable, the installation and layout are simple, and the input cost is low.

2. The split mold used includes a plurality of tile-shaped molds and fixed flanges installed at both ends of the tile-shaped molds. First, it is to strengthen the connection of the plurality of tile-shaped molds through the fixed flanges. The stability of the split mold is improved; second, it is to facilitate the detachable connection between the tile-shaped mold and the fixed flange, so as to facilitate the disassembly of the tile-shaped mold after the tantalum liner is processed, and the tantalum-shaped mold is removed. The corrugated expansion joint is used to avoid damage to the inner side during the disassembly of the processed tantalum corrugated expansion joint; third, it is to support the tantalum liner, because the wall thickness of the tantalum liner is thin, so as to avoid the overall deformation of the tantalum liner; third Fourth, it is to facilitate the layout of corrugated grooves.

3. The tool mechanism used is to move close to or away from the split die. The tantalum liner on the split die is spun by the tool mechanism until the cylinder wall of the tantalum liner by the tool mechanism contacts the corrugated concave. When the bottom of the groove is finished, the processing of the corrugated expansion joint is completed, and the operation is convenient.

4. The tool mechanism and the split die are installed on the lathe, so that the tantalum corrugated expansion joint can be stably processed and manufactured by the lathe, with convenient operation and low production cost.

5. The adopted method for forming the tantalum-made corrugated expansion joint has simple steps, convenient implementation and simple operation, ensuring that the forming quality of the tantalum-made corrugated expansion joint meets the requirements.

6. The tantalum-made corrugated expansion joint forming method is easy to operate and has good use effect. First, assemble the split mold and install the tantalum liner, secondly install the tool mechanism and split mold, and then operate the spindle to rotate, and the spindle rotates to drive the split. The mold rotates, and the split mold rotates to drive the tantalum liner to rotate; during the rotation of the tantalum liner, the blade radially feeds into contact with the tantalum liner, and the blade spins the wall of the tantalum liner. When the cylinder wall of the liner contacts the bottom of the corrugated groove, the radial feed of the blade portion is stopped, the processing of the corrugated expansion joint is completed, and the forming of the tantalum corrugated expansion is realized.

To sum up, the present invention is simple in structure and reasonable in design, can stably process and manufacture tantalum corrugated expansion joints by using a lathe, is convenient to operate, has low production cost, and is easy to popularize and use.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of a tantalum-made corrugated expansion joint forming device according to the present invention.

FIG. 2 is a schematic structural diagram of the split mold of the tantalum-made corrugated expansion joint forming device according to the present invention.

FIG. 3 is a front view of FIG. 2 .

4 is a schematic structural diagram of the cutter mechanism of the tantalum-made corrugated expansion joint forming device according to the present invention.

5 is a schematic structural diagram of a corrugated groove of a tantalum-made corrugated expansion joint forming device according to the present invention.

FIG. 6 is a flow chart of a method for forming a tantalum-made corrugated expansion joint according to the present invention.

Explanation of reference numbers:

1—split mold; 1-1—fixed flange; 1-2—connection block;

1-3—tile-shaped die; 1-3-1—first tile-shaped die;

1-3-2—the second tile-shaped die; 2—the cutter mechanism; 2-1—the rotary wheel;

2-2—tool holder; 2-3—pin shaft; 2-4—bearing;

2-5—tool holder; 2-6—blade; 3—spindle;

4—machine tool; 5—corrugated groove; 5-1—first arc segment;

5-2—the first inclination segment; 5-3—the second arc segment; 5-4—the second inclination segment;

5-5—the third arc segment; 6—tantalum bushing; 7-1—the first tenon;

7-2—Second tenon; 8—Four jaw chuck; 9—Tailstock;

10—the top; 11—the support plate; 12—the boss;

13—Second slide. 14—The first slide rail.

Detailed ways

As shown in Figures 1 to 5, a tantalum-made corrugated expansion joint forming device includes a cutter mechanism 2 mounted on a machine tool 4 and a split die 1 mounted on the machine tool 4, the split die 1 is provided with Tantalum liner 6, a main shaft 3 and a tailstock 9 are arranged on the machine tool 4, a four-jaw chuck 8 is installed on the main shaft 3, a top 10 is arranged on the tailstock 9, and the One end is mounted on the four-jaw chuck 8, and the other end of the split die 1 is mounted with a support plate 11, and a boss 12 is provided on the side of the support plate 11 close to the split die 1, and the boss 12 extends Enter the other end of the split mold 1, the outer side of the boss 12 is in contact with the inner side of the split mold 1, and the side of the support plate 11 close to the split mold 1 is in contact with the other end of the split mold 1 combined, the top 10 extends into the center of the support plate 11;

The split mold 1 includes a plurality of tile-shaped molds 1-3 and fixed flanges 1-1 installed at both ends of the tile-shaped molds 1-3. The plurality of tile-shaped molds 1-3 surround the The resulting cross section is circular, the outer side walls of the tile-shaped die 1-3 are provided with corrugated grooves 5, the number of the corrugated grooves 5 is multiple, and a plurality of the corrugated grooves 5 are arranged along the tile. The length direction of the sheet-shaped die 1-3 is arranged, and the depth of the corrugated groove 5 is less than the thickness of the tile-shaped die 1-3;

Both ends of each tile-shaped die 1-3 are provided with connecting blocks 1-2, the connecting blocks 1-2 and the fixing flange 1-1 are detachably connected, and the cutter mechanism 2 can be close to or away from The split model moves in the 1 direction.

In this embodiment, the connecting block 1-2 is a fan-shaped connecting block, and the outer arc of the fan-shaped connecting block 1-2 is connected with the inner arc of the tile-shaped die 1-3 by welding;

The corrugated groove 5 is composed of corrugated groove segments arranged on the outer side walls of each tile-shaped die 1-3, and the structures of each of the corrugated groove segments are the same;

Two adjacent tile-shaped molds 1-3 are respectively a first tile-shaped mold 1-3-1 and a second tile-shaped mold 1-3-2, the first tile-shaped mold 1 -3-1 is provided with a first tongue groove and a first tenon 7-1, the second tile-shaped die 1-3-2 is provided with a second tongue groove and a second tenon 7-2, the The second tenon 7-2 protrudes into the first tenon groove, and the first tenon 7-1 protrudes into the second tenon groove.

In this embodiment, the tool mechanism 2 includes a tool handle 2-5, a tool holder 2-2 installed on one end of the tool holder 2-5, and a rotary wheel 2-1 installed on the tool holder 2-2. The frame 2-2 is a U-shaped tool holder, a pin shaft 2-3 is passed through the tool holder 2-2, a bearing 2-4 is sleeved on the pin shaft 2-3, and the tool holder 2-2 A mounting hole for the pin shaft 2-3 to pass through is provided on the top, and the rotary wheel 2-1 is sleeved on the bearing 2-4.

In this embodiment, the outer circumferential surface of the rotary wheel 2-1 is provided with a blade portion 2-6, the blade portion 2-6 is located at the center of the outer circumferential surface of the rotary wheel 2-1, and the blade portion The outer diameter of 2-6 is larger than that of rotary wheel 2-1 by 15mm-20mm.

In this embodiment, the inner surface of the corrugated groove 5 is composed of a first circular arc segment 5-1, a first inclination segment 5-2, a second circular arc segment 5-3, and a second inclination segment connected in sequence. 5-4 and a third circular arc segment 5-5, the first circular arc segment 5-1 and the third circular arc segment 5-5 are arranged symmetrically with respect to the second circular arc segment 5-3, and the first circular arc segment 5-3 is inclined. The degree segment 5-2 and the second inclination segment 5-4 are symmetrically arranged with respect to the second circular arc segment 5-3, and the radians of the first circular arc segment 5-1 and the third circular arc segment 5-5 are smaller than those of the second circular arc segment 5-5. The radian of the arc segment 5-3, the radius of the circle where the first arc segment 5-1 and the third arc segment 5-5 are located is smaller than the radius of the circle where the second arc segment 5-3 is located, the Both the first circular arc segment 5-1 and the third circular arc segment 5-5 are connected to the outer side wall of the tile-shaped die 1-3.

In this embodiment, the distance between two adjacent corrugated grooves 5 is 70 mm to 100 mm, and the distance between the bottom of the corrugated groove 5 and the outer side wall of the tile-shaped die 1-3 is 3 mm to 6 mm, The width of the top of the corrugated groove 5 is 12mm˜14mm.

In this embodiment, during actual use, the lathe 4 is provided with a first sliding rail 14 for the tool mechanism 2 to move along the length direction of the tantalum liner 6 , and a first sliding block is provided on the first sliding rail 14 , the first sliding block is provided with a second sliding rail 13, the second sliding rail 13 is provided with a second sliding block, and the second sliding block is provided with a tool handle 2-5 for the tool mechanism 2 For the installed vertical plate, the cutter mechanism 2 can be close to or away from the tantalum bushing 6 along the second sliding rail 13, and the first sliding rail 14 and the second sliding rail 13 are arranged in a cross.

In this embodiment, a positioning hole is provided at the center of the support plate 11 , and the tip 10 extends into the positioning hole to support and position the support plate 11 .

In this embodiment, the four-jaw chuck 8 , the support plate 11 and the center 10 are positioned so that the position of the tantalum liner 6 does not shift, thereby improving the quality and precision of forming.

In this embodiment, the radians of the first circular arc segment 5-1 and the third circular arc segment 5-5 are in the range of 50° to 60°, and the radians of the second circular arc segment 5-3 are in the range of 50° to 60°. The value ranges from 106° to 110°.

In this embodiment, the first circular arc segment 5-1 and the third circular arc segment 5-5 are set, and the value range of the radians of the first circular arc segment 5-1 and the third circular arc segment 5-5 is 50 °～60°, for the purpose of transitional connection between the corrugated groove 5 and the outer wall of the tile-shaped die 1-3, so as to avoid the stress concentration of the tantalum liner 6 during the spinning process, so as to avoid the stress concentration of the tantalum liner 6. Fatigue cracks occur in corrugated joints, or nicks, holes, and grooves occur.

In this embodiment, the first inclination section 5-2 and the second inclination section 5-4 are provided to increase the depth of the corrugated groove 5 to meet the depth requirement of the tantalum corrugated expansion joint; The width of the groove 5 is convenient for the blade 2-6 to pass through and enter the third arc segment 5-5; the third arc segment 5-5 is set, and the first is to match the circular arc of the circumferential side of the blade 2-6. Matching, it is convenient for the blade 2-6 to extend into the third arc segment 5-5; the second is to facilitate the corrugated section formed by the tantalum liner 6 to be arc-shaped, effectively compensating for the thermal stress deformation of the tantalum liner, and also Can greatly improve the rigidity of the tantalum lining layer.

In this embodiment, the split mold 1 includes a plurality of tile-shaped mold pieces 1-3 and fixed flanges 1-1 installed at both ends of the tile-shaped mold pieces 1-3. -1 Strengthen the connection of multiple tile-shaped dies 1-3, and improve the stability of the split die 1; second, it is to facilitate the disassembly of the tile-shaped dies 1-3 and the fixing flange 1-1 connection, so that after the tantalum liner 6 is processed, it is convenient to disassemble the tile-shaped die 1-3 and disassemble the tantalum corrugated expansion joint, so as to avoid damage to the inner side during the disassembly process of the processed tantalum corrugated expansion joint; third, The purpose is to support the tantalum liner 6 , because the wall thickness of the tantalum liner 6 is relatively thin, so as to avoid the overall deformation of the tantalum liner 6 ; fourth, it is to facilitate the arrangement of the corrugated grooves 5 .

In this embodiment, the cutter mechanism 2 is set to move close to or away from the split die 1 , and the tantalum liner 6 on the split die 1 is spun by the cutter mechanism until the cutter mechanism spins the tantalum liner 6 When the wall of the bellows contacts the bottom of the corrugated groove 5, the processing of the corrugated expansion joint is completed, and the operation is convenient.

In this embodiment, the tool mechanism and the split die 1 are installed on a lathe, so that the lathe can be used to stably process and manufacture the tantalum corrugated expansion joint, which is convenient to operate and has a low production cost.

In this embodiment, the connection block 1-2 is for the purpose of a fan-shaped connection block. First, the outer arc of the connection block 1-2 is connected with the inner arc of the tile-shaped module 1-3 by welding, and the connection block 1-2 is added to The connection area of the inner side of the tile-shaped modules 1-3 is fixedly connected by the connection block 1-2 and the fixing flange 1-1, thereby fixing multiple tile-shaped modules 1-3 and improving the stability; Second, it is to reduce the outer arc area of the connecting block 1-2, so as to facilitate the processing personnel to reach into the split mold 1, and to facilitate the disassembly of the plurality of tile-shaped mold pieces 1-3.

In this embodiment, the first tile-shaped die 1-3-1 is provided with a first tongue groove and a first tenon 7-1, and the second tile-shaped die 1-3-2 is provided with a first tenon 7-1. Two tenon grooves and a second tenon 7-2, the second tenon 7-2 extends into the first tenon groove, and the first tenon 7-1 extends into the second tenon groove for the purpose of passing The second tenon 7-2 cooperates with the first tenon and groove and the first tenon 7-1 cooperates with the second tenon and groove, so as to realize the first tile-shaped die 1-3-1 and the second tile-shaped The positioning of the die 1-3-2 during installation improves the installation accuracy, thereby improving the forming quality of the tantalum corrugated expansion joint.

In this embodiment, the number of the tile-shaped mold pieces 1 - 3 is four, which is convenient for installation and disassembly, and improves the overall stability of the split mold body 1 .

In this embodiment, the bearing 2-4 is provided, and the rotary wheel 2-1 is sleeved on the bearing 2-4, so that the rotary wheel 2-1 contacts the tantalum liner 6 during the rotation of the tantalum bushing 6, and the rotary wheel 2-1 is equivalent to the driven wheel, and also rotates with the tantalum liner 6, so that the rotary wheel 2-1 rotates while radially feeding, and the rotation of the rotary wheel 2-1 can reduce the distance between the tantalum liner 6 and the friction,

A method for forming a tantalum corrugated expansion joint as shown in Figure 6 includes the following steps:

Step 1. Assemble the split mold and install the tantalum liner:

Step 101, splicing a plurality of tile-shaped mold pieces 1-3, and installing fixing flanges 1-1 at both ends of the plurality of tile-shaped mold pieces 1-3 to obtain a split mold 1; wherein, the tiles Both ends of the shaped die 1-3 are provided with connecting blocks 1-2, and bolts are pierced in the connecting blocks 1-2 and the fixing flange 1-1;

Step 102: Set the tantalum liner 6 on the outer side of the split mold 1; wherein, the inner side of the tantalum liner 6 is in contact with the outer side of the split mold 1, and the length of the tantalum liner 6 is smaller than that of the split mold 1 length;

Step 2. Install the tool mechanism and split mold:

Step 201: Install the tool holder 2-2 on the tool holder 2-5, and install the rotary wheel 2-1 on the tool holder 2-2 to complete the assembly of the tool mechanism 2; wherein, the tool holder 2-2 is provided with a pin The shaft 2-3, the pin shaft 2-3 is sleeved with a bearing 2-4, the rotary wheel 2-1 is sleeved on the bearing 2-4, and the outer circumferential surface of the rotary wheel 2-1 is provided with a blade portion 2-6;

Step 202: Install the tool mechanism 2 on the machine tool 4, and install the split die 1 with the tantalum liner 6 on the main shaft 3 of the machine tool 4;

Step 3. Forming of tantalum corrugated expansion:

Step 301: Adjust the cutter mechanism 2 to move close to the split mold 1, when the cutter mechanism 2 fits the outer side wall of the outer tantalum liner 6 of the split mold 1; adjust the cutter mechanism 2 to move along the length direction of the split mold 1 until the cutting edge The center of the part 2-6 along the thickness direction of the circumferential side surface coincides with the center projection of the corrugated groove 5;

Step 302: Operate the main shaft 3 to rotate, the rotation of the main shaft 3 drives the split mold 1 to rotate, and the rotation of the split mold 1 drives the tantalum liner 6 to rotate; during the rotation of the tantalum liner 6, the blade parts 2-6 are fed radially Contact the tantalum liner 6, the blade 2-6 spins the barrel wall of the tantalum liner 6, and when the blade 2-6 spins the barrel wall of the tantalum liner 6 and contacts the bottom of the corrugated groove 5, stop the blade 2-6 radial feed to complete the processing of a corrugated expansion joint;

Step 303 , the blade 2-6 retreats in the radial direction, and adjusts the blade 2-6 to move along the length direction of the split die 1 until the center of the blade 2-6 in the thickness direction of the circumferential side and the next corrugated groove 5. The center projections are coincident;

Step 304, repeating step 302 to complete the processing of the next corrugated expansion joint;

Step 305: Repeat steps 303 and 304 until the processing of the corrugated expansion joints at the plurality of corrugated grooves 5 of the tantalum liner 6 is completed;

Step 4. Removal of the tantalum corrugated expansion joint forming device:

Step 401, removing the split mold 1 and the processed tantalum liner 6 from the machine tool 4;

Step 402 , removing the bolt and the fixing flange 1-1, and taking the tile-shaped die 1-3 out of the processed tantalum liner 6 to obtain a tantalum-made corrugated expansion joint.

In this embodiment, the rotation speed of the main shaft 3 in step 302 is 30r/min～50r/min;

In step 302, the radial feed rate of the blade portion 2-6 is 0.4 mm/min˜0.6 mm/min.

In this embodiment, the wall thickness of the tantalum liner 6 in step 102 is 0.5 mm˜2 mm.

In this embodiment, the rotation speed of the main shaft 3 is set to be 30 r/min to 50 r/min, because if the rotation speed of the main shaft 3 is greater than 50 r/min, it will cause the tantalum bushing 6 and the parts where the blade parts 2-6 are spun. If the frictional force between the two is too large, it is easy to cause tearing during the forming process of the expansion joint of the tantalum liner 6; if the rotation speed of the main shaft 3 is less than 30r/min, on the one hand, it will affect the forming efficiency of the expansion joint of the tantalum liner 6; on the other hand , the surface roughness of the formed expansion joint is also relatively poor.

In this embodiment, the radial feed rate of the blade portion 2-6 is set to be 0.4 mm/min to 0.6 mm/min because if the radial feed rate of the blade portion 2-6 is less than 0.4 mm/min, on the one hand, it will affect the The forming efficiency of the expansion joint of the tantalum liner 6; on the other hand, the surface roughness of the formed expansion joint is also relatively poor; if the radial feed speed of the blade 2-6 is greater than 0.6mm/min, the formed expansion joint The surface quality is checked, the power consumption is large, and the blade 2-6 is easy to wear.

To sum up, the present invention has simple structure and reasonable design, can stably process and manufacture tantalum corrugated expansion joints by using a lathe, is convenient to operate, has low production cost, and is easy to popularize and use.

The above are only preferred embodiments of the present invention and do not limit the present invention. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of the program.

Claims (9)

1. A tantalum-made corrugated expansion joint forming device is characterized in that: comprising a cutter mechanism (2) installed on a machine tool (4) and a split die (1) installed on the machine tool (4), the split A tantalum liner (6) is provided on the outer casing of the die (1), a main shaft (3) and a tailstock (9) are arranged on the machine tool (4), and a four-jaw chuck (8) is installed on the main shaft (3). , the tailstock (9) is provided with a tip (10), one end of the split mold (1) is mounted on the four-jaw chuck (8), and the other end of the split mold (1) is mounted with a A support plate (11), a boss (12) is provided on the side of the support plate (11) close to the split mold (1), and the boss (12) extends into the other end of the split mold (1), The outer side surface of the boss (12) is in contact with the inner side surface of the split mold (1), and the side surface of the support plate (11) close to the split mold (1) is in contact with the other end of the split mold (1). Fitting, the top (10) extends into the center of the support plate (11); The split mold (1) includes a plurality of tile-shaped mold pieces (1-3) and fixed flanges (1-1) installed at both ends of the tile-shaped mold pieces (1-3). The cross section enclosed by the sheet-shaped die (1-3) is circular, and the outer side wall of the tile-shaped die (1-3) is provided with a corrugated groove (5), and the corrugated groove (5) The number of the corrugated grooves (5) is multiple, and the plurality of corrugated grooves (5) are arranged along the length direction of the tile-shaped die (1-3), and the depth of the corrugated groove (5) is smaller than that of the tile-shaped die (1-3). 1-3) thickness; Both ends of each of the tile-shaped modules (1-3) are provided with connecting blocks (1-2), and the connecting blocks (1-2) and the fixing flange (1-1) are detachably connected, so The cutter mechanism (2) can move toward or away from the split mold (1). 2. A tantalum-made corrugated expansion joint forming device according to claim 1, characterized in that: the connecting block (1-2) is a fan-shaped connecting block, and the outer arc of the fan-shaped connecting block (1-2) is Internal arc welding connection with tile-shaped die (1-3); The corrugated grooves (5) comprise corrugated groove segments arranged on the outer side walls of each tile-shaped die (1-3), and the structures of each of the corrugated groove segments are the same; Two adjacent tile-shaped molds (1-3) are respectively a first tile-shaped mold (1-3-1) and a second tile-shaped mold (1-3-2). The tile-shaped mold (1-3-1) is provided with a first tongue groove and a first tenon (7-1), and the second tile-shaped mold (1-3-2) is provided with a second A tongue groove and a second tongue (7-2), the second tongue (7-2) extends into the first tongue groove, and the first tongue (7-1) extends into the second tongue groove. 3. A tantalum-made corrugated expansion joint forming device according to claim 1, characterized in that: the cutter mechanism (2) comprises a handle (2-5), a A tool holder (2-2) and a rotary wheel (2-1) mounted on the tool holder (2-2), the tool holder (2-2) is a U-shaped tool holder, and the tool holder (2-2) ) is provided with a pin shaft (2-3), the pin shaft (2-3) is sleeved with a bearing (2-4), and the tool holder (2-2) is provided with a supply pin shaft (2- 3) Through the mounting hole, the rotary wheel (2-1) is sleeved on the bearing (2-4). 4. A tantalum-made corrugated expansion joint forming device according to claim 3, characterized in that: the outer circumferential surface of the rotary wheel (2-1) is provided with a blade portion (2-6), the blade portion (2-6) is located at the center of the outer circumferential surface of the rotary wheel (2-1), and the outer diameter of the blade portion (2-6) is larger than that of the rotary wheel (2-1) by 15mm-20mm. 5. A tantalum-made corrugated expansion joint forming device according to claim 1, characterized in that: the inner surface of the corrugated groove (5) is composed of the first arc segment (5-1), the first arc segment (5-1), the second An inclination section (5-2), a second circular arc section (5-3), a second inclination section (5-4) and a third circular arc section (5-5), the first circular arc The segment (5-1) and the third circular arc segment (5-5) are arranged symmetrically with respect to the second circular arc segment (5-3), and the first inclination segment (5-2) and the second inclination segment ( 5-4) The second circular arc segment (5-3) is symmetrically arranged, and the radians of the first circular arc segment (5-1) and the third circular arc segment (5-5) are smaller than the second circular arc segment ( 5-3), the radius of the circle where the first arc segment (5-1) and the third arc segment (5-5) are located is smaller than the radius of the circle where the second arc segment (5-3) is located. Radius, the first circular arc segment (5-1) and the third circular arc segment (5-5) are both connected to the outer sidewall of the tile-shaped die (1-3). 6. A tantalum-made corrugated expansion joint forming device according to claim 1, characterized in that: the distance between two adjacent corrugated grooves (5) is 70mm-100mm, and the corrugated grooves (5) 5) The distance between the bottom of the tile-shaped die (1-3) and the outer sidewall of the tile-shaped die (1-3) is 3mm-6mm, and the width of the top of the corrugated groove (5) is 12mm-14mm. 7. A method for forming a tantalum corrugated expansion joint, characterized in that the method comprises the following steps: Step 1. Assemble the split mold and install the tantalum liner: Step 101, splicing a plurality of tile-shaped dies (1-3), and installing fixing flanges (1-1) on both ends of the plurality of tile-shaped dies (1-3), to obtain a split-type die (1-3). ); wherein, both ends of the tile-shaped die (1-3) are provided with connecting blocks (1-2), and bolts are provided in the connecting blocks (1-2) and the fixing flange (1-1). ; Step 102: Set the tantalum liner (6) on the outer side of the split mold (1); wherein, the inner side of the tantalum liner (6) is in contact with the outer side of the split mold (1), and the tantalum liner The length of (6) is less than the length of the split model (1); Step 2. Install the tool mechanism and split mold: Step 201: Install the tool holder (2-2) on the tool holder (2-5), and install the rotary wheel (2-1) on the tool holder (2-2) to complete the assembly of the tool mechanism (2); wherein, A pin shaft (2-3) is pierced through the tool holder (2-2), a bearing (2-4) is sleeved on the pin shaft (2-3), and the rotary wheel (2-1) is sleeved with a bearing (2-4). On the bearing (2-4), the outer circumferential surface of the rotary wheel (2-1) is provided with a blade portion (2-6); Step 202, installing the cutter mechanism (2) on the machine tool (4), and installing the split mold (1) equipped with the tantalum liner (6) on the main shaft (3) of the machine tool (4); Step 3. Forming of tantalum corrugated expansion: Step 301: Adjust the cutter mechanism (2) to move in the direction of the split mold (1), when the cutter mechanism (2) fits the outer side wall of the outer tantalum liner (6) of the split mold (1); adjust the cutter mechanism (2) Move along the length direction of the split die (1) until the center of the blade (2-6) in the thickness direction of the circumferential side surface coincides with the center projection of the corrugated groove (5); Step 302, operating the main shaft (3) to rotate, the rotation of the main shaft (3) drives the split mold (1) to rotate, and the rotation of the split mold (1) drives the tantalum liner (6) to rotate; During the process, the blade portion (2-6) radially feeds into contact with the tantalum liner (6), and the blade portion (2-6) spins the wall of the tantalum liner (6). ) When the cylinder wall of the spinning tantalum liner (6) contacts the bottom of the corrugated groove (5), stop the radial feed of the blade (2-6) to complete the machining of a corrugated expansion joint; Step 303, the blade portion (2-6) retreats in the radial direction, and the adjusting blade portion (2-6) moves along the length direction of the split die (1) until the center of the blade portion (2-6) in the thickness direction of the circumferential side surface coincides with the center projection of the next corrugated groove (5); Step 304, repeating step 302 to complete the processing of the next corrugated expansion joint; Step 305: Repeat steps 303 and 304 until the processing of the corrugated expansion joints at the plurality of corrugated grooves (5) of the tantalum liner (6) is completed; Step 4. Removal of the tantalum corrugated expansion joint forming device: Step 401, removing the split mold (1) and the processed tantalum liner (6) from the machine tool (4); Step 402: Remove the bolt and the fixing flange (1-1), and take the tile-shaped die (1-3) out of the processed tantalum liner (6) to obtain a tantalum-made corrugated expansion joint. 8. The method for forming a tantalum-made corrugated expansion joint according to claim 7, wherein in step 302, the rotation speed of the main shaft (3) is 30r/min～50r/min; In step 302, the radial feed rate of the blade portion (2-6) is 0.4 mm/min˜0.6 mm/min. 9 . The method for forming a tantalum corrugated expansion joint according to claim 7 , wherein the wall thickness of the tantalum liner ( 6 ) in step 102 is 0.5 mm to 2 mm. 10 .

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