CN112620536A - Titanium alloy wire pier head preparation device and method - Google Patents
Titanium alloy wire pier head preparation device and method Download PDFInfo
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- CN112620536A CN112620536A CN202011479162.XA CN202011479162A CN112620536A CN 112620536 A CN112620536 A CN 112620536A CN 202011479162 A CN202011479162 A CN 202011479162A CN 112620536 A CN112620536 A CN 112620536A
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- titanium alloy
- alloy wire
- mold core
- pier head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F5/00—Upsetting wire or pressing operations affecting the wire cross-section
- B21F5/005—Upsetting wire
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a titanium alloy wire pier head preparation device which comprises a pressing block and a cushion block which are oppositely arranged; the pressing block comprises a first mold core, a groove is formed in the first mold core, faces the cushion block, and is in over-tight fit with the end part of the titanium alloy wire; the cushion block comprises a second die sleeve, and a channel for the titanium alloy wire to pass through is arranged on the second die sleeve opposite to the groove; a second mold core is arranged at the end part of the channel close to the groove, the second mold core is a circular ring body, and the peripheral surface of the circular ring body is in tight fit with the side wall of the channel; the inner peripheral surface of the end part of the ring body close to the groove extends to the outer peripheral surface to form a shaping cavity, and the shape of the shaping cavity is the same as that of the pier head to be processed; the first mold core and the second mold sleeve are connected in series in the heating circuit; the pier head prepared by the invention does not change the comprehensive performance of the pier head, and can avoid the pier head from cracking or falling.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of titanium alloy wire processing, and particularly relates to a device and a method for preparing a titanium alloy wire pier head.
[ background of the invention ]
In recent years, titanium alloy wires with small specification (phi is less than or equal to 4mm) are widely used in the biomedical field such as surgical instruments, surgical implants and the like due to excellent comprehensive performance and good biocompatibility, and the materials are required to have good mechanical property, mechanical property and biocompatibility. Some medical devices are made using titanium alloy wire with a pier at the end.
At present, the preparation methods of the titanium alloy pier head mainly comprise two methods: fusion and female connection. The melting method is that the wire material is heated to a temperature above the melting point to be melted and flows into a cavity, the end part of the wire material is placed in the molten titanium alloy, and the pier head can be formed after cooling. The inner thread method is that inner threads are processed at the end parts of the pier head and the wire substrate, the wire substrate and the pier head are connected through stud bolts, and finally the connecting part of the pier head and the wire substrate is welded.
Practice tests show that the pier heads prepared by the two methods have more defects: (1) the pier head has poorer performance than the base body. After the titanium alloy is melted, a small amount of micro-pore defects exist inside the titanium alloy, so that the comprehensive performance of the pier head is deteriorated, and after the titanium alloy is melted, crystal grains are coarsened, and the internal structure is changed. (2) The transition area of the pier head and the wire is easy to break.
The pier head prepared by the melting method has poor comprehensive performance compared with a matrix, so that a transition region has a stress concentration phenomenon, and the pier head is easy to break in work. The welding area of the internal thread method is easy to crack due to the existence of the welding seam, and then the pier head falls off.
[ summary of the invention ]
The invention aims to provide a device and a method for preparing a titanium alloy wire pier head, so that a titanium alloy wire substrate and the pier head are of an integrated structure, the connection performance is improved, and the pier head is prevented from cracking or falling.
The invention adopts the following technical scheme: a titanium alloy wire pier head preparation device comprises a pressing block and a cushion block which are oppositely arranged;
the pressing block comprises a first mold core, a groove is formed in the first mold core, faces the cushion block, and is in over-tight fit with the end part of the titanium alloy wire and used for clamping the titanium alloy wire when the titanium alloy wire is subjected to head upsetting;
the cushion block comprises a second die sleeve, and a channel for the titanium alloy wire to pass through is arranged on the second die sleeve opposite to the groove;
a second mold core is arranged at the end part of the channel close to the groove, the second mold core is a ring body, the outer peripheral surface of the ring body is in over-tight fit with the side wall of the channel, and the inner peripheral surface of the ring body is used for clamping the side surface of the titanium alloy wire;
the inner peripheral surface of the end part of the ring body close to the groove extends to the outer peripheral surface to form a shaping cavity, and the shape of the shaping cavity is the same as that of the pier head to be processed;
the first mold core and the second mold sleeve are connected in series in a heating circuit, and the heating circuit is used for heating titanium alloy wires through the first mold core and the second mold sleeve before pressing the pier heads.
Furthermore, the pressing block further comprises a first cushion block connected with the pressing machine, the first cushion block is connected with a first die sleeve through a first insulating plate, and a first die core is installed on the first die sleeve.
Further, a concave part is arranged on the first die sleeve, and the first die core is installed on the concave part.
Further, the first mold core is in threaded connection with the first mold sleeve.
The cushion block further comprises a second cushion block, and the second cushion block is connected with a second die sleeve through a second insulating plate; and the second cushion block and the second insulating plate are respectively provided with a channel which has the same size and corresponds to the channel on the second die sleeve.
Further, the passage of the second die case is tapered inwardly from the end adjacent to the groove.
Further, the second mold core is formed by splicing at least two arc-shaped blocks.
Furthermore, a positioning assembly is arranged between the pressing block and the cushion block.
Furthermore, the positioning assembly comprises at least two positioning rods, and positioning grooves are formed in the pressing block and the cushion block.
The other technical scheme of the invention is as follows: a preparation method of a titanium alloy wire pier head applies the titanium alloy wire pier head preparation device, and specifically comprises the following steps:
installing a pressing block and a cushion block, and fixing a first mold core and a second mold sleeve;
the end part of the titanium alloy wire to be processed passes through the channel of the second die sleeve and is inserted into the groove of the first die core;
a second mold core is arranged between the channel and the titanium alloy wire, and the titanium alloy wire is clamped and fixed;
starting a heating circuit, and heating the titanium alloy wire positioned between the second mold core and the first mold core to a preset temperature;
and pressing the pressing block to a preset distance towards the cushion block to enable the titanium alloy wire positioned at the second mold core to deform and be positioned in the shaping cavity of the second mold core, so as to obtain the pier head of the titanium alloy wire.
The invention has the beneficial effects that: according to the titanium alloy wire pier head, the first mold core is arranged on the pressing block, the second mold sleeve and the second mold core are arranged on the cushion block, the titanium alloy wire to be processed is fixed through the first mold core and the second mold core, the fixed part of the titanium alloy wire is heated through the heating circuit, the first mold core is driven to move towards the second mold core through the pressing block after the preset temperature is reached, and then the pier head of the titanium alloy wire is completed.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a titanium alloy wire pier head preparation device according to an embodiment of the invention.
Wherein: 10. briquetting; 11. a first cushion block; 12. a first insulating plate; 13. a first die sleeve; 14. a first mold core; 15. a first insulating bolt;
20. cushion blocks; 21. a second cushion block; 22. a second insulating plate; 23. a second die sleeve; 24. a second mold core; 25. a second insulating bolt;
30. a positioning assembly;
40. titanium alloy wire material;
50. a temperature control module;
60. a power source.
[ detailed description ] embodiments
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a titanium alloy wire pier head preparation device, which is applied to a titanium alloy wire with the diameter less than or equal to 4mm, and comprises a pressing block 10 and a cushion block 20 which are oppositely arranged as shown in figure 1; the pressing block 10 comprises a first mold core 14, a groove is formed in the first mold core 14, faces to the cushion block 20, and the groove 14 is in over-tight fit with the end part of the titanium alloy wire 40 and is used for clamping the titanium alloy wire 40 when the titanium alloy wire 40 is subjected to heading; the cushion block 20 comprises a second die sleeve 23, and a channel for the titanium alloy wire 40 to pass through is arranged on the second die sleeve 23 opposite to the groove; a second mold core 24 is arranged at the end part of the channel close to the groove, the second mold core 24 is a circular ring body, the outer peripheral surface of the circular ring body is in over-tight fit with the side wall of the channel, and the inner peripheral surface of the circular ring body is used for clamping the side surface of the titanium alloy wire material 40; the inner peripheral surface of the end part of the ring body close to the groove extends to the outer peripheral surface to form a shaping cavity, and the shaping cavity has the same shape as the pier head to be processed.
In addition, the first mold core 14 and the second mold sleeve 23 are connected in series in a heating circuit, and the heating circuit is used for heating the titanium alloy wire 40 through the first mold core 14 and the second mold sleeve 23 before pressing the pier heads.
According to the titanium alloy wire upsetting method, the first mold core is arranged on the pressing block, the second mold sleeve and the second mold core are arranged on the cushion block, the titanium alloy wire to be processed is fixed through the first mold core and the second mold core, the fixed part of the titanium alloy wire is heated through the heating circuit, after the preset temperature is reached, the first mold core is driven by the pressing block to move towards the second mold core, the titanium alloy wire is subjected to plastic deformation, and then the upsetting head of the titanium alloy wire is completed. The pier head prepared by the method can not change the comprehensive performance of the pier head, and can avoid the pier head from cracking or falling.
In the embodiment of the present invention, the compact 10 further includes a first block 11 for connecting with the press, the first block 11 is connected with a first die sleeve 13 through a first insulating plate 12, and a first die core 14 is mounted on the first die sleeve 13. By providing the first block 11, the first insulating plate 12, and the first die case 13, the installation of the first die core 14 can be facilitated.
Specifically, the first cushion block 11, the first insulating plate 12 and the first die sleeve 13 are connected through a first insulating bolt 15. Since a heating circuit is to be established among the first die sleeve 13, the first die core 14 and the second die sleeve 23, the connection among the components is performed through the first insulating bolt 15 to prevent the external connection of electricity, thereby improving the safety of the device.
In the embodiment of the invention, the first die sleeve 13 is provided with the concave part, the first die core 14 is arranged in the concave part, and the concave part can solve the positioning problem of the first die core 14 and facilitate the installation. Specifically, the first mold core 14 is in threaded connection with the first mold sleeve 13, so that the first mold core and the first mold sleeve can be conveniently detached, and accessories can be conveniently replaced.
As a specific implementation form, the cushion block 20 further includes a second cushion block 21, and the second cushion block 21 is connected to a second die sleeve 23 through a second insulating plate 22; the second cushion block 21 and the second insulating plate 22 are provided with channels which have the same size and correspond to the channels on the second die sleeve 23. In this way, the fixing of the second die case 23 is facilitated.
In order to enhance the connection strength, the second spacer 21, the second insulating plate 22 and the second die sleeve 23 are connected by a second insulating bolt 25, and external electric leakage can be prevented when the heating circuit operates by using the second insulating bolt 25.
In the present embodiment, the passage of the second die case 23 is tapered inwardly from the end near the groove. In a specific form, the end of the passage of the second die sleeve 23 adjacent to the groove is frustoconical. Through this kind of mode, can be so that the joint strength between titanium alloy silk material and the second die sleeve 23 is more, the slip of titanium alloy silk material 40 when preventing the preparation pier nose.
Since the titanium alloy wire 40 passes through the channels of the second die sleeve 23, the second insulating plate 22 and the second spacer 21 in sequence, in order to prevent the titanium alloy wire 40 from contacting with other parts to conduct electricity, the channels of the second die sleeve 23, the second insulating plate 22 and the second spacer 21 are provided with gaps with the side surfaces of the titanium alloy wire 40.
As a specific implementation mode, the second mold core 24 is formed by splicing at least two arc-shaped blocks, so that the second mold core 24 can be conveniently installed, the titanium alloy wire material 40 can be inserted firstly, and then the second mold core 24 is installed.
In addition, a positioning assembly 30 is arranged between the pressing block 10 and the spacer 20, and the positioning assembly 30 is used for realizing the position correspondence between the pressing block 10 and the spacer 20 so as to enable the channels of the first mold core 14 and the second mold sleeve 23 to correspond. As a form, the locating component is at least two locating levers, all have the constant head tank on briquetting 10 and the cushion 20, insert the one end of locating lever on the briquetting 10 earlier, insert the other end on the constant head tank on the cushion 20 again, just so guaranteed that the position of briquetting 10 and cushion 20 corresponds. In addition, a thread can be arranged in the positioning groove of the pressing block 10 or the cushion block 20, and the positioning rod is also provided with a thread, so that the pressing block and the cushion block are in threaded connection and are more stable.
In the embodiment of the invention, the heating circuit comprises a power supply 60, a temperature control module 50, a first die sleeve 13 and a second die sleeve 23 which are connected in series, and the power of the whole circuit is adjusted through the temperature control module 50, so that the titanium alloy wire material 40 between the first die core 14 and the second die core 24 is heated as a resistor.
The invention also discloses another technical scheme, a preparation method of the titanium alloy wire pier head, and the application of the titanium alloy wire pier head preparation device specifically comprises the following steps: installing a pressing block 10 and a cushion block 20, and fixing a first mold core 14 and a second mold sleeve 23; the end of the titanium alloy wire 40 to be processed is inserted through the passage of the second die sleeve 23 and into the groove of the first die core 14; a second mold core 24 is arranged between the channel and the titanium alloy wire material 40, and the titanium alloy wire material 40 is clamped and fixed; starting a heating circuit to heat the titanium alloy wire material 40 positioned between the second mold core 24 and the first mold core 14 to a preset temperature; and pressing the pressing block 10 to the direction of the cushion block 20 to a preset distance, so that the titanium alloy wire 40 positioned at the second mold core 24 is deformed and positioned in the shaping cavity of the second mold core 24, and thus the pier head of the titanium alloy wire 40 is obtained.
By the mode, the titanium alloy wire is fixed firstly, then the fixed section is heated, and finally the pressure is applied through the pressing block, so that the titanium alloy wire of the fixed section is upset to generate a pier head.
Example 1 was carried out:
the device provided by the embodiment of the invention is used for upsetting the 8mm area at the end of a TC4 titanium alloy wire with the diameter of 4.0mm, and selecting the second die sleeve 23 with the corresponding size, wherein the second die core 24 is formed by splicing two parts, the semi-mode second die sleeve 23 is arranged at the position 9mm away from the end of the wire, and the extra 1mm is positioned in the first die core 14, so that the first die core 14 and the second die sleeve 23 can be conveniently positioned. The second mold core 24 and the titanium alloy wire 40 are passed through the tapered hole of the second mold sleeve 23, and the wire is fixed by the pressure generated by the taper angle between the second mold core 24 and the second mold sleeve 23. The first die case 13, the first insulating plate 15 and the first head block 11 are connected in this order using ceramic bolts. Similarly, the second die case 23, the second insulating plate 25 and the second spacer 21 are connected in this order using ceramic bolts. Setting the temperature in the heating control system to be 800 ℃, starting the heating system to heat the wire area between the upper die core and the lower die core, moving the first die core 14 to the second die core 24 at a certain speed when the temperature reaches 800 ℃, stopping moving after the first die core 14 and the second die core 24 are contacted, and returning the first die core 14 to the initial position after keeping for 40 seconds. The wire heating area is subjected to plastic deformation and flows into the shaping cavity of the second mold core 24 to form a TC4 titanium alloy pier head with the diameter of 6 mm.
Example 2 was carried out:
the device is used for upsetting the end part of a TB8 titanium alloy wire with the diameter of 2.0mm in the area of 4mm, and the second mold core 24 with the corresponding size is selected, in the embodiment, the second mold core 24 is formed by splicing two parts, the second mold core 24 in a half mode is positioned at the position 5mm away from the end part of the wire, and the extra 1mm is positioned in the upper mold core, so that the first mold core 14 and the second mold core 24 are conveniently positioned. The second mold core 24 and the wire are passed through the tapered hole of the second die sleeve 23, and the wire is fixed by the pressure generated by the taper angle between the second mold core 24 and the second die sleeve 23. The first die case 13, the first insulating plate 15 and the first head block 11 are connected in this order using ceramic bolts. The second die case 23, the second insulating plate 25 and the second spacer 21 are sequentially connected using ceramic bolts. Setting the temperature in the heating control system to be 800 ℃, starting the heating system, heating the wire material area between the first mold core 14 and the second mold core 24, moving the first mold core 14 to the second mold core 24 at a certain speed when the temperature reaches 800 ℃, stopping moving after the first mold core 14 and the second mold core 24 are contacted, and returning the first mold core 14 to the initial position after keeping for 40 seconds. And (3) plastically deforming the wire heating area, and flowing into a shaping cavity of the lower mold core to form a TB8 titanium alloy pier head with the diameter of 3 mm.
Claims (10)
1. A titanium alloy wire pier head preparation device is characterized by comprising a pressing block (10) and a cushion block (20) which are oppositely arranged;
the pressing block (10) comprises a first mold core (14), a groove is formed in the first mold core (14), faces the cushion block (20), and the groove (14) is in over-tight fit with the end of the titanium alloy wire (40) and used for clamping the titanium alloy wire (40) when the titanium alloy wire (40) is subjected to heading;
the cushion block (20) comprises a second die sleeve (23), and a channel for the titanium alloy wire (40) to pass through is arranged on the second die sleeve (23) at a position opposite to the groove;
a second mold core (24) is arranged at the end part, close to the groove, of the channel, the second mold core (24) is a circular ring body, the outer peripheral surface of the circular ring body is in tight fit with the side wall of the channel, and the inner peripheral surface of the circular ring body is used for clamping the side surface of the titanium alloy wire (40);
the inner peripheral surface of the end part of the ring body close to the groove extends to the outer peripheral surface to form a shaping cavity, and the shape of the shaping cavity is the same as that of the pier head to be processed;
the first mold core (14) and the second mold sleeve (23) are connected in series in a heating circuit, and the heating circuit is used for heating the titanium alloy wire (40) through the first mold core (14) and the second mold sleeve (23) before pressing a pier head.
2. The titanium alloy wire pier head preparation device according to claim 1, wherein the pressing block (10) further comprises a first cushion block (11) for connecting with a press, the first cushion block (11) is connected with a first die sleeve (13) through a first insulating plate (12), and the first die core (14) is mounted on the first die sleeve (13).
3. The titanium alloy wire pier nose preparation device according to claim 2, wherein a recess is formed in the first die sleeve (13), and the first die core (14) is mounted in the recess.
4. The titanium alloy wire pier nose preparation device according to claim 2 or 3, wherein the first die core (14) is in threaded connection with the first die sleeve (13).
5. The titanium alloy wire pier head preparation device according to claim 4, wherein the spacer block (20) further comprises a second spacer block (21), and the second spacer block (21) is connected with the second die sleeve (23) through a second insulating plate (22); and the second cushion block (21) and the second insulating plate (22) are respectively provided with a channel which has the same size and the corresponding position with the channel on the second die sleeve (23).
6. The titanium alloy wire pier nose preparation device of claim 5, wherein the passage of the second die sleeve (23) is inwardly tapered from the end near the groove.
7. The titanium alloy wire pier nose preparation device of claim 6, wherein the second mold core (24) is formed by splicing at least two arc-shaped blocks.
8. The titanium alloy wire pier head preparation device according to any one of claims 5 to 7, wherein a positioning assembly (30) is arranged between the pressing block (10) and the cushion block (20).
9. The titanium alloy wire pier head preparation device according to claim 8, wherein the positioning assembly is at least two positioning rods, and the pressing block (10) and the cushion block (20) are provided with positioning grooves.
10. A method for preparing a titanium alloy wire pier head, which is characterized by applying the device for preparing the titanium alloy wire pier head as claimed in any one of claims 1 to 9, and specifically comprises the following steps:
installing a pressing block (10) and a cushion block (20), and fixing a first mold core (14) and a second mold sleeve (23);
passing an end of a titanium alloy wire (40) to be processed through the passage of the second die sleeve (23) and into the groove of the first die core (14);
mounting a second mold core (24) between the channel and the titanium alloy wire (40) to clamp and secure the titanium alloy wire (40);
starting a heating circuit to heat a titanium alloy wire (40) between the second mold core (24) and the first mold core (14) to a predetermined temperature;
and pressing the pressing block (10) to the direction of the cushion block (20) to a preset distance, so that the titanium alloy wire (40) positioned at the second mold core (24) is deformed and positioned in a shaping cavity of the second mold core (24), and thus the pier head of the titanium alloy wire (40) is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011479162.XA CN112620536A (en) | 2020-12-15 | 2020-12-15 | Titanium alloy wire pier head preparation device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011479162.XA CN112620536A (en) | 2020-12-15 | 2020-12-15 | Titanium alloy wire pier head preparation device and method |
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| Publication Number | Publication Date |
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| CN112620536A true CN112620536A (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011479162.XA Pending CN112620536A (en) | 2020-12-15 | 2020-12-15 | Titanium alloy wire pier head preparation device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145772A (en) * | 2021-04-12 | 2021-07-23 | 建华建材（中国）有限公司 | Novel upset head of reinforced precast pile and production method thereof |
| CN114406137A (en) * | 2021-12-31 | 2022-04-29 | 江苏玖泰电力实业有限公司 | Hydraulic pier head machine for processing internal reinforcing steel bars of cement poles |
-
2020
- 2020-12-15 CN CN202011479162.XA patent/CN112620536A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145772A (en) * | 2021-04-12 | 2021-07-23 | 建华建材（中国）有限公司 | Novel upset head of reinforced precast pile and production method thereof |
| CN113145772B (en) * | 2021-04-12 | 2023-09-05 | 建华建材（中国）有限公司 | Novel upsetting head of reinforced precast pile and production method thereof |
| CN114406137A (en) * | 2021-12-31 | 2022-04-29 | 江苏玖泰电力实业有限公司 | Hydraulic pier head machine for processing internal reinforcing steel bars of cement poles |
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