WO2024183308A1

WO2024183308A1 - Rolling die heating method and rolling processing system having heating function

Info

Publication number: WO2024183308A1
Application number: PCT/CN2023/128457
Authority: WO
Inventors: 石一磬; 陈钰金; 李思奇; 梁培新; 赵利; 高丙坤
Original assignee: 中国机械总院集团北京机电研究所有限公司
Priority date: 2023-03-09
Filing date: 2023-10-31
Publication date: 2024-09-12
Also published as: CN116351880A

Abstract

A rolling die heating method, comprising: integrating an electric heating tube (4) in a roller (2) or a rolling die (3), and arranging same close to the outer peripheral surface of the roller or the rolling die; and a rolling processing system having a heating function, comprising a roller driving system (1), a roller, a rolling die sleeved on the roller, an electric heating tube embedded in the roller or the rolling die, and an electric slip ring (5) connected to the electric heating tube. The heating method and the rolling processing system can continuously heat rolling dies during continuous rolling processes, and always keep the temperature of the dies during continuous rolling production, thus improving the quality of forged pieces and the stability of the rolling processes, and helping to stably control the temperature of the rolling dies during the continuous rolling processes.

Description

Rolling die heating method and rolling processing system with heating function

Technical Field

The invention relates to the technical field of metal processing, in particular to a rolling die heating method and a rolling processing system with heating function.

Background Art

Rolling is a metal processing technology that refers to a pressure processing method in which a metal blank is passed through the gap between a pair of rotating rollers, where the material cross-section is reduced and the length is increased due to the compression of the rollers. Common rolling processing systems include cross wedge rolling mills, roll forging machines, etc.

Rollers are important rotating parts in the rolling processing system. They are generally cylindrical in shape. When in use, corresponding rolling dies are installed on their outer circumference to roll the rolled material accordingly. Taking the existing wedge cross rolling mill and roll forging machine as an example, the surface of the rolling die is heated by external flame baking before rolling production. After the rolling die reaches a certain temperature, the flame baking is removed before rolling begins. Flame baking involves open flames, which affects safety and the environment. In addition, the surface temperature of the baked rolling die is uneven, and carbides are easily left on the surface of the die, affecting the surface quality of the die. At the same time, the existing technology cannot continuously heat the rolling die during the rolling process, nor can it accurately control the temperature of the rolling die during the continuous rolling production process. When rolling materials with a narrow forming temperature range such as aluminum alloys, it has a great impact on the quality of the forgings after rolling.

Therefore, it is necessary to propose a new rolling die heating scheme to solve the problem that the existing flame baking rolling die technology cannot continuously heat the rolling die during the rolling process.

Summary of the invention

The purpose of the present invention is to provide a rolling die heating method and a rolling processing system with heating function, so as to solve the problem that the above-mentioned existing flame baking rolling die technology cannot continuously heat the rolling die during the rolling process.

To achieve the above object, the present invention provides the following solutions:

The present invention provides a rolling die heating method, comprising:

The rolling die is heated by an electric heating tube embedded in the roller and close to the outer peripheral surface of the roller;

Alternatively, the rolling die is directly heated by the electric heating pipe embedded in the rolling die and close to the outer peripheral surface of the rolling die;

Alternatively, the rolling die is heated simultaneously by the electric heating tube embedded in the rolling die and close to the outer peripheral surface of the rolling die, and the electric heating tube embedded in the rolling roller and close to the outer peripheral surface of the rolling roller.

The present invention also provides a rolling processing system with a heating function, comprising a roller drive system, a roller and a rolling die sleeved on the roller, wherein the roller is sleeved on a half shaft of the roller drive system, and further comprising:

The electric heating tube is embedded only in the roller and arranged close to the outer peripheral surface of the roller; or, the electric heating tube is embedded only in the rolling die and arranged close to the outer peripheral surface of the rolling die; or, the electric heating tube is embedded and installed in the roller and the rolling die respectively, and the electric heating tube in the roller is arranged close to the outer peripheral surface of the roller, and the electric heating tube in the rolling die is arranged close to the outer peripheral surface of the rolling die;

An electric slip ring, wherein the stationary part of the electric slip ring is mounted on the roller drive system and electrically connected to the power supply device, the rotating part of the electric slip ring is connected to the roller or the half shaft, and the electric heating tube is electrically connected to the rotating part of the electric slip ring through a cable.

Optionally, the electric heating tube is a linear electric heating tube, and the linear electric heating tube is only embedded in the rolling roller; a plurality of the linear electric heating tubes are evenly arranged along the circumference of the rolling roller, and any one of the linear electric heating tubes is arranged parallel to the axial direction of the rolling roller, and any one of the linear electric heating tubes is electrically connected to the rotating part of the electric slip ring through a cable.

Optionally, the electric slip ring is an end slip ring, which is located at one axial end of the semi-shaft, and the rotating part of the end slip ring is connected to the semi-shaft, and any one of the linear electric heating tubes is electrically connected to the rotating part of the end slip ring through a cable.

Optionally, it also includes a wiring plug, which is arranged in the half shaft; a plurality of wire grooves are opened inside the end of the roller close to the end face slip ring, and the wire grooves are arranged one by one corresponding to the linear electric heating tubes, and any of the wire grooves are distributed along the radial direction of the roller, and any The inner ends of the wire grooves are connected to the interior of the half-shaft, and the cables of any one of the linear electric heating tubes pass through the corresponding wire grooves into the half-shaft and are electrically connected to one end of the wiring plug, and the other end of the wiring plug is electrically connected to the rotating part of the end face slip ring.

Optionally, the electric heating tube is a linear electric heating tube, and the linear electric heating tube is only embedded in the rolling mold; a plurality of the linear electric heating tubes are evenly arranged along the circumference of the rolling mold, and any one of the linear electric heating tubes is arranged parallel to the axial direction of the rolling mold, and any one of the linear electric heating tubes is electrically connected to the rotating part of the electric slip ring through a cable.

Optionally, it also includes multiple wiring plugs, which are arranged on the outer periphery of the half-shaft and correspond to the linear electric heating tubes one by one. Any linear electric heating tube is electrically connected to one end of the corresponding wiring plug through a cable, and the other end of any wiring plug is electrically connected to the rotating part of the end face slip ring through a cable passed through the inside of the half-shaft.

Optionally, the electric slip ring is an annular slip ring sleeved on the outer circumference of the roller, the inner ring of the annular slip ring is connected to the roller as the rotating part, and the outer ring of the annular slip ring is installed on the roller drive system as the stationary part; any one of the linear electric heating tubes is electrically connected to the rotating part of the annular slip ring through a cable.

Optionally, the annular slip ring is arranged adjacent to or spaced apart from the rolling die.

Compared with the prior art, the present invention has achieved the following technical effects:

The rolling die heating method proposed in the present invention heats the rolling die by an electric heating tube embedded in the rolling die or the rolling roller, which can not only continuously heat the rolling die during the continuous rolling process, but also always maintain the temperature of the die during the continuous rolling production, thereby improving the quality of the forgings and the stability of the rolling process, but also facilitates the stable control of the rolling die temperature during the continuous (batch) rolling process. In addition, the electric heating tube is embedded in the rolling die or the rolling roller, does not occupy the external space of the rolling system, and does not interfere with the smooth progress of the rolling process. Since the electric heating tube does not cover or block the rolling roller, the rolling die, and the rolled material when heating the rolling die, it is conducive to real-time observation of the rolling process of the rolled material.

The rolling processing system with heating function proposed by the present invention integrates the electric heating tube into the rolling roller or the rolling die and arranges it close to the outer peripheral surface of the rolling roller or the rolling die. It can not only continuously heat the rolling die during the continuous rolling process, but also always maintain the temperature of the die during the continuous rolling production, thereby improving the quality of the forgings and the stability of the rolling process, but also facilitates the stable control of the rolling die temperature during the continuous (batch) rolling process. In addition, the electric heating tube is embedded in the rolling die or the rolling roller, does not occupy the external space of the rolling system, and does not interfere with the smooth progress of the rolling process. Since the electric heating tube does not cover or block the rolling roller, the rolling die and the rolled material when heating the rolling die, it is conducive to the real-time observation of the rolling process of the rolled material.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a rolling processing system with a heating function disclosed in Embodiment 2 of the present invention;

FIG2 is a schematic structural diagram of a rolling processing system with a heating function disclosed in Embodiment 3 of the present invention;

FIG3 is a schematic diagram of the structure in the direction A in FIG2 ;

4 is a schematic structural diagram of the spacing arrangement of the annular slip ring and the rolling die in the rolling processing system with heating function disclosed in the fourth embodiment of the present invention;

FIG5 is a schematic structural diagram of a rolling processing system with a heating function disclosed in Embodiment 4 of the present invention, in which a circular slip ring and a rolling die are arranged in close proximity.

Wherein, the accompanying drawings are marked as follows:
1. Roller drive system; 11. Axle; 12. Column;
2. Roller; 21. Pipe mounting slot; 22. Wire slot;
3. Rolling die; 31. Pipe mounting groove;
4. Electric heating tube;
5. End face slip ring; 51. Rotating part; 52. Stationary part;
6. Cables;
7. Wiring plug;
8. Annular slip ring; 81. Rotating part; 82. Stationary part;
9. Mould positioning ring.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

One of the purposes of the present invention is to provide a rolling die heating method to solve the problems of large volume, large space and inconvenience in observing the rolling process in the existing resistance furnace heating technology and heating insulation box heating technology.

Another object of the present invention is to provide a rolling processing system with a heating function to solve the problems of large volume, large space and inconvenience in observing the rolling process in the existing resistance furnace heating technology and heating insulation box heating technology.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1

The present embodiment provides a rolling die heating method, which mainly heats the rolling die 3 by an electric heating tube 4 embedded in the rolling roller 2 and close to the outer peripheral surface of the rolling roller 2; or, directly heats the rolling die 3 by an electric heating tube 4 embedded in the rolling die 3 and close to the outer peripheral surface of the rolling die 3; or, heats the rolling die 3 simultaneously by an electric heating tube 4 embedded in the rolling die 3 and close to the outer peripheral surface of the rolling die 3, and an electric heating tube 4 embedded in the rolling roller 2 and close to the outer peripheral surface of the rolling roller 2. The above three rolling die heating methods mainly integrate the electric heating tube 4 in the rolling die 3 or the rolling roller 2, and arrange it close to the outer peripheral surface of the rolling die 3 or the rolling roller 2, which can not only continuously heat the die during the rolling process to always maintain the temperature of the die in the continuous rolling production, thereby improving the quality of the forging and the stability of the rolling process, but also do not occupy the external space of the rolling system, and will not interfere with the smooth progress of the rolling process, because when heating the die, the rolling roller 2 and the rolling die 3 are not covered or shielded, Therefore, it does not hinder the real-time observation of the rolling process of the rolled material. Considering that embedding the electric heating tube 4 in both the rolling die 3 and the roller 2 not only consumes a lot of power but also easily causes energy waste, it is generally preferred to embed the electric heating tube 4 only in the rolling die 3 or only in the roller 2 during the rolling process.

In this embodiment, a pipe installation groove for embedding the electric heating pipe 4 is generally provided in the side wall of the rolling die 3 or the roller 2, and a plurality of electric heating pipes 4 are evenly arranged along the outer circumference of the rolling die 3 or the roller 2. Embedding a plurality of electric heating pipes 4 on the outer circumference of the rolling die 3 or the roller 2 can ensure that the rolled material is heated evenly. In actual operation, the number of electric heating pipes 4 and the coverage area on the rolling die 3 or the roller 2 are determined according to the rolling requirements.

Furthermore, the temperature of the electric heating tube 6 can be adjusted according to the measured rolling die temperature or roller temperature, so that the rolling die 3 is heated up or kept at a constant temperature to ensure heating accuracy. To implement this solution, the electric heating tube 4 can be equipped with a corresponding temperature detection device and a temperature control module. The temperature detection device can be a thermocouple or an infrared temperature measuring device, which is used to monitor the temperature of the rolling die 3 in real time. Each electric heating tube 4 and the temperature detection device in the rolling system are electrically connected to the temperature control module. The temperature control module can control the heating temperature of each electric heating tube 4 through the temperature value detected by the temperature detection device, so as to achieve precise control of the temperature required by the rolling system. The infrared temperature measuring device is generally installed on the outside of the rolling roller 2 and the rolling die 3, and the temperature measurement is achieved by irradiating infrared rays to the rolling roller 2 or the rolling die 3; the thermocouple can be directly embedded in the rolling roller 2 or the rolling die 3. In order to avoid the external structure taking up space and interfering with the normal rolling process, this solution preferably uses thermocouples for temperature measurement and embeds them in the inner wall of the roller 2 or the rolling die 3. In order to ensure accurate temperature measurement, at least two thermocouples can be evenly arranged on the roller 2 or the rolling die 3. Generally, 2 to 3 thermocouples are evenly arranged along the circumference of the roller 2 or the rolling die 3. The above-mentioned electric heating tube 4 cooperates with the temperature detection device and the temperature control module to stably control the temperature of the rolling die, which is particularly important in the aluminum alloy rolling process and has a great influence on the internal quality and appearance size of the forging after rolling.

It can be seen that the above-mentioned rolling die heating method proposed in the technical solution integrates the electric heating tube into the rolling die or the rolling roller and arranges it close to the outer peripheral surface of the rolling die or the rolling roller. It can not only continuously heat the rolling die during the continuous rolling process and always maintain the temperature of the die during the continuous rolling production, thereby improving the quality of the forgings and the stability of the rolling process, but also facilitates the realization of stable control of the rolling die temperature during the continuous (batch) rolling process. In addition, the electric heating tube is embedded in the rolling die or the rolling roller, does not occupy the external space of the rolling system, and does not interfere with the smooth progress of the rolling process. Since the electric heating tube When the rolling mold is heated, the rollers, rolling molds and rolled materials are not covered or shielded, so it is beneficial to observe the rolling process of the rolled materials in real time.

In addition, by configuring the electric heating tubes with corresponding temperature detection devices and temperature control modules, the temperature control module can adjust the heating temperature of each electric heating tube through the temperature value detected by the temperature detection device, so as to achieve precise control of the temperature required by the rolling system, which can further ensure the smooth progress of the rolling process.

Embodiment 2

As shown in Figure 1, this embodiment proposes a rolling processing system with a heating function, including a roller drive system 1, a roller 2 and a rolling mold 3 sleeved on the roller 2, and the roller 2 is sleeved on the half shaft 11 of the roller drive system 1; in addition, the rolling processing system also includes an electric heating tube 4 and an electric slip ring, wherein the electric heating tube 4 is only embedded in the roller 2 and arranged close to the outer peripheral surface of the roller 2; or, the electric heating tube 4 is only embedded in the rolling mold 3 and arranged close to the outer peripheral surface of the rolling mold 3; or, the electric heating tube 4 is respectively embedded and installed in the roller 2 and the rolling mold 3, and the electric heating tube 4 in the roller 2 is arranged close to the outer peripheral surface of the roller 2, and the electric heating tube 4 in the rolling mold 3 is arranged close to the outer peripheral surface of the rolling mold 3. The stationary part of the electric slip ring is installed on the column 12 of the roller drive system 1 and is electrically connected to the power supply device. The stationary part of the electric slip ring does not rotate or move, and the rotating part of the electric slip ring is connected to the roller 2 or the half shaft 11. The electric heating tube 4 is electrically connected to the rotating part of the electric slip ring through the cable 6. The above-mentioned rolling processing system with heating function, by embedding the electric heating tube 4 in the roller 2 or the rolling die 3, can not only continuously heat the die during the rolling process, so as to always maintain the temperature of the die in the continuous rolling production, thereby improving the quality of the forging and the stability of the rolling process, but also does not occupy the external space of the rolling system, and will not interfere with the smooth progress of the rolling process. Since the roller, the rolling die and the rolled material are not covered or blocked when the mold is heated, the real-time observation of the rolling process of the rolled material is not hindered. At the same time, by configuring and installing electric slip rings, it is possible to realize the dynamic and static conversion of the line while providing normal power to each electric heating tube 4, so that the cable 6 connected to the electric heating tube 4 can rotate synchronously with the roller 2, avoiding twisting or breaking of the cable 6 under the rotation of the roller 2, which is beneficial to improving the reliability and service life of the system and promoting the smooth progress of rolling work.

In this embodiment, the electric heating tube 4 can be a circular electric heating tube adapted to the circumference of the roller 2 or the rolling mold 3, or it can be a linear electric heating tube; if a circular electric heating tube is used, a circular arc tube installation groove needs to be opened in the side wall of the roller 2 or the rolling mold 3; if a linear electric heating tube is used, it needs to be A linear tube installation groove 21 is provided in the side wall of the roller 2 or the rolling die 3 along the axial direction thereof. Considering the simplification of the processing procedure and the influence of the tube installation groove on the strength of the roller 2 or the rolling die 3 itself, this solution preferably adopts a linear electric heating tube for the electric heating tube 4. Taking the linear electric heating tube only embedded in the roller 2 as an example, a plurality of linear tube installation grooves 21 are evenly distributed along the circumference of the roller 2 in the side wall of the roller 2, and the linear electric heating tube is installed in the tube installation groove 21, and any linear electric heating tube is arranged parallel to the axial direction of the roller, and any linear electric heating tube is electrically connected to the rotating part of the electric slip ring through the cable 6.

Further, as a preferred solution, the electric slip ring of this embodiment is preferably an end slip ring 5, which is located at one axial end of the half shaft 11, and the rotating part 51 of the end slip ring 5 is connected to the end of the half shaft 11, and the stationary part 52 of the end slip ring 5 is fixedly connected to the column 12. The above-mentioned roller drive system is mainly used to install and drive the roller to rotate, and adopts the existing technology, wherein a pair of columns 12 are provided as a support structure for supporting and rotating the half shaft 11. In this embodiment, in order to realize the integrated arrangement of multiple cables 6, a wiring plug 7 is also arranged inside the half shaft 11, and a plurality of wire grooves 22 are opened inside the end of the roller 2 close to the end face slip ring 5, and any wire groove 22 is distributed along the radial direction of the roller 2, and the wire grooves 22 are arranged one-to-one with the above-mentioned tube installation grooves 21. Since an electric heating tube 4 is installed in each tube installation groove 21, the wire grooves 22 and the electric heating tubes 4 in the roller 2 are also arranged one-to-one. The outer end of each wire groove 22 is connected to the corresponding tube installation groove 21, and the inner end is connected to the inside of the half shaft 11. The cable 6 of any linear electric heating tube passes through the corresponding wire groove 22 into the half shaft 11 and is electrically connected to one end of the wiring plug 7, and the other end of the wiring plug 7 is electrically connected to the rotating part 51 of the end face slip ring 5.

The following uses the rolling processing system with heating function in this embodiment as a wedge cross rolling mill as an example to specifically explain the use of the electric heating tube 4 on its rolling roller 2.

The stationary part 52 of the end slip ring 5 is installed on a column 12 in the wedge cross rolling mill, and the rotating part 51 is connected to the end of the half shaft 11. The rotating part 51 can rotate synchronously with the half shaft 11, while the stationary part 52 of the end slip ring 5 always remains stationary. The electric heating tubes 4 are distributed in a full circle along the circumference of the roller 2 to ensure uniform heating of the outer peripheral surface of the roller 2; the cable 6 of each electric heating tube 4 is passed through the corresponding wire groove 22 on the roller 2 to the half shaft 11, and is electrically connected to one end of the wiring plug 7, and the other end of the wiring plug 7 is electrically connected to the rotating part 51 of the end slip ring 5. After the stationary part 52 of the end slip ring 5 is connected to the power supply device, each electric heating tube 4 can be powered, and the electric heating tube 4 directly heats the roller 2. The roller 2 is heated, and then the heat is transferred from the roller 2 to the rolling die 3 on the roller 2 by utilizing the heat conductivity of the metal, so as to achieve heating or heat preservation of the rolling die 3, and further achieve heating or heat preservation of the rolled material.

In actual operation, in order to ensure the heating accuracy, the electric heating tube 4 can be equipped with a corresponding temperature detection device and a temperature control module to achieve accurate temperature control of the rolling die 3. The above-mentioned temperature detection device can be a thermocouple or an infrared temperature measuring device, which is used to monitor the temperature of the rolling die 3 in real time. Each electric heating tube 4 and the temperature detection device in the rolling system are electrically connected to the temperature control module. The temperature control module can adjust the heating temperature of each electric heating tube 4 according to the temperature value detected by the temperature detection device to achieve accurate control of the temperature required by the rolling system. The infrared temperature measuring device is generally installed on the outside of the rolling roller 2 and the rolling die 3, and the temperature measurement is achieved by irradiating infrared rays to the rolling roller 2 or the rolling die 3; the thermocouple can be directly embedded in the rolling roller 2 or the rolling die 3. In order to avoid the external structure taking up space and interfering with the normal rolling process, this solution preferably uses thermocouples for temperature measurement and embeds them in the inner wall of the roller 2 or the rolling die 3. In order to ensure accurate temperature measurement, at least two thermocouples can be evenly arranged on the roller 2 or the rolling die 3. Generally, 2 to 3 thermocouples are evenly arranged along the circumference of the roller 2 or the rolling die 3. The above-mentioned electric heating tube 4 cooperates with the temperature detection device and the temperature control module to stably control the temperature of the rolling die, which is particularly important in the aluminum alloy rolling process and has a great influence on the internal quality and appearance size of the forging after rolling.

It can be seen that the above-mentioned rolling processing system with heating function proposed in the technical solution, by integrating the electric heating tube in the rolling roller and arranging it close to the outer peripheral surface of the rolling roller, can not only continuously heat the rolling die during the continuous rolling process, but also always maintain the temperature of the die during the continuous rolling production, thereby improving the quality of the forgings and the stability of the rolling process, but also is conducive to achieving stable control of the temperature of the rolling die during continuous (batch) rolling. In addition, the electric heating tube is embedded in the rolling die or the rolling roller, does not occupy the external space of the rolling system, and does not interfere with the smooth progress of the rolling process. Since the electric heating tube does not cover or block the rolling roller, the rolling die and the rolled material when heating the rolling die, it is conducive to real-time observation of the rolling process of the rolled material.

Embodiment 3

As shown in Figures 2 and 3, this embodiment provides a rolling processing system with a heating function, which is mainly different from the second embodiment in that this embodiment uses a linear electric heating tube directly embedded in the rolling mold 3. A plurality of linear tube installation grooves 31 are evenly arranged along the circumference of the side wall of the rolling mold 3, and the linear electric heating tubes are installed in the tube installation grooves 31, and any linear electric heating tube is arranged parallel to the axial direction of the roller 2, and any linear electric heating tube is electrically connected to the rotating part of the electric slip ring through the cable 6.

Further, as a preferred solution, the electric slip ring of this embodiment is also preferably an end slip ring 5, which is located at one axial end of the half shaft 11, the rotating part 51 of the end slip ring 5 is connected to the end of the half shaft 11, and the stationary part 52 of the end slip ring 5 is fixedly connected to the column 12. The above-mentioned roller drive system is mainly used to install and drive the roller 2 to rotate. The existing technology is adopted, and a pair of columns 12 are provided as a supporting structure for supporting and rotating the half shaft 11. In this embodiment, since the rolling mold 3 is installed outside the roller 2, if the wiring is realized by opening the wire groove 22 in the second embodiment, the structure will be complicated and the strength of the roller 2 will be reduced unnecessarily, so this embodiment adopts the method of external wiring. As shown in FIG. 2 , in this embodiment, a plurality of wiring plugs 7 are arranged at intervals along the axial direction of the outer periphery of the half shaft 11. The wiring plugs 7 rotate synchronously with the half shaft 11, so they are stationary relative to the rolling die 3. Based on this, in this embodiment, the wiring plugs 7 are preferably arranged in a one-to-one correspondence with the above-mentioned tube mounting grooves 31. Since an electric heating tube 4 is generally installed in each tube mounting groove 31, the wiring plugs 7 and the electric heating tubes 4 are also arranged in a one-to-one correspondence. The cable 6 of any linear electric heating tube is electrically connected to one end of the corresponding wiring plug 7, and the other ends of all wiring plugs 7 are electrically connected to the rotating part 51 of the end face slip ring 5 through the cable 6. It should be noted here that the cable 6 between the wiring plug 7 and the rolling die 3 is located on the periphery of the half-shaft 11, which belongs to external wiring. As for the cable 6 between the wiring plug 7 and the end face slip ring 5, considering that the half-shaft 11 and the column 12 are rotatably installed through bearings and other components, the cable 6 directly distributed on the outside will make the system redundant. Therefore, the cable 6 between the wiring plug 7 and the end face slip ring 5 adopts an internal wiring method, that is, the cable 6 between the wiring plug 7 and the end face slip ring 5 is passed through the inside of the half-shaft 11, as shown in Figure 2.

In addition, the wiring plug 7 of this embodiment and the wiring plug 7 of the second embodiment are both wiring and conductive devices. Due to the different installation positions, the two have different structures, but the functions are the same. The wiring plug 7 of this embodiment and the wiring plug 7 of the second embodiment both use existing wiring plugs, and the specific structure and working principle are not repeated here.

The following uses the rolling processing system with heating function in this embodiment as a wedge cross rolling mill as an example to specifically explain the usage of the electric heating tube 4 on its rolling die 3.

The stationary part 52 of the end slip ring 5 is installed on a column 12 in the wedge cross rolling mill, and its rotating part 51 is connected to the end of the half shaft 11. The rotating part 51 can rotate synchronously with the half shaft 11, while the stationary part 52 of the end slip ring 5 always remains stationary. The electric heating tubes 4 are distributed in a full circle along the circumference of the rolling mold 3 to ensure uniform heating of the outer peripheral surface of the rolling mold 3; the cables 6 of each electric heating tube 4 are electrically connected to the rotating part 51 of the end slip ring 5 through the corresponding wiring plug 7. After the stationary part 52 of the end slip ring 5 is connected to the power supply device, each electric heating tube 4 can be powered, and the electric heating tube 4 directly heats or keeps the rolling mold 3 warm, thereby achieving heating or keeping the rolled material warm.

In actual operation, in order to ensure the heating accuracy, the electric heating tube 4 can be equipped with a corresponding temperature detection device and a temperature control module to achieve accurate temperature control of the rolling die 3. The above-mentioned temperature detection device can be a thermocouple or an infrared temperature measuring device, which is used to monitor the temperature of the rolling die 3 in real time. Each electric heating tube 4 and the temperature detection device in the rolling system are electrically connected to the temperature control module. The temperature control module can adjust the heating temperature of each electric heating tube 4 according to the temperature value detected by the temperature detection device, so as to achieve accurate control of the temperature required by the rolling system. The infrared temperature measuring device is generally installed on the outside of the rolling roller 2 and the rolling die 3, and the temperature measurement is achieved by irradiating infrared rays to the rolling roller 2 or the rolling die 3; the thermocouple can be directly embedded in the rolling roller 2 or the rolling die 3. In order to avoid the external structure taking up space and interfering with the normal rolling process, this solution preferably uses thermocouples for temperature measurement and embeds them in the inner wall of the roller 2 or the rolling die 3. In order to ensure accurate temperature measurement, at least two thermocouples can be evenly arranged on the roller 2 or the rolling die 3. Generally, 2 to 3 thermocouples are evenly arranged along the circumference of the roller 2 or the rolling die 3. The above-mentioned electric heating tube 4 cooperates with the temperature detection device and the temperature control module to stably control the temperature of the rolling die, which is particularly important in the aluminum alloy rolling process and has a great influence on the internal quality and appearance size of the forging after rolling.

It can be seen that the above-mentioned rolling processing system with heating function proposed in this technical solution, by integrating the electric heating tube in the rolling die and arranging it close to the outer peripheral surface of the rolling die, can not only continuously heat the rolling die during the continuous rolling process, but also always maintain the temperature of the die during the continuous rolling production, thereby improving the quality of the forgings and the stability of the rolling process, but also facilitates the realization of stable control of the rolling die temperature during the continuous (batch) rolling process. In addition, the electric heating tube is embedded in the rolling die or the roller, does not occupy the external space of the rolling system, and does not interfere with the smooth progress of the rolling process. Since the electric heating tube When the rolling mold is heated, the rollers, rolling molds and rolled materials are not covered or shielded, so it is beneficial to observe the rolling process of the rolled materials in real time.

Embodiment 4

As shown in FIG4 and FIG5, the main difference between this embodiment and the third embodiment is that the electric slip ring of this embodiment is an annular slip ring 8 sleeved on the outer circumference of the roller 2. This embodiment is the same as the third embodiment, in which a plurality of linear tube installation grooves 31 are evenly arranged along the circumference of the side wall of the rolling mold 3, and the linear electric heating tube 4 is installed in the tube installation groove 31, and any electric heating tube 4 is arranged parallel to the axial direction of the roller 2. The inner ring of the annular slip ring 8 is connected to the roller 2 as a rotating part 81, and can rotate synchronously with the roller 2, and the outer ring of the annular slip ring is installed on the column 12 of the roller drive system as a stationary part 82, and always remains stationary. Any electric heating tube 4 is electrically connected to the rotating part 81 of the annular slip ring through a cable 6, and the stationary part 82 of the annular slip ring is used for an external power supply device. Since the annular slip ring and the rolling die 3 are simultaneously mounted on the roller 2, the arrangement of the wiring plug structure can be omitted, and the cable 6 led out from the rolling die 3 is directly electrically connected to the rotating part 81 of the annular slip ring, and the wiring method is simpler and more direct.

In this embodiment, the rolling die 3 is generally fixed and axially positioned on the roller 2 by a die positioning ring 9, that is, a die positioning ring 9 is distributed between the annular slip ring and the rolling die 3, and a hole for the cable 6 to pass through is opened on the die positioning ring 9. In the actual installation process, the annular slip ring and the die positioning ring 9 can be arranged at intervals, as shown in Figure 4, and some other mechanisms or pipes for the cable 6 to pass through can be arranged between the two; the annular slip ring can also be arranged close to the die positioning ring 9, as shown in Figure 5, at this time, the annular slip ring and the rolling die 3 are in a close proximity, making the structure on the roller 2 more compact.

In this embodiment, the electric heating tube 4 can be arranged along the entire circumference of the rolling mold 3, or only 1/2 circle, 1/3 circle or 1/4 circle, etc., mainly depending on different rolling requirements.

The following takes the rolling processing system with heating function in this embodiment as a roll forging machine as an example to specifically explain the use of the electric heating tube 4 on its rolling die 3.

The annular slip ring 8 is sleeved on the roller 2, and its rotating part 81 is connected to the roller 2 as the inner ring and rotates synchronously with the roller 2. The stationary part 82 of the annular slip ring 8 is fixed to the column 11 as the outer ring and always remains stationary. The electric heating tube 4 is evenly arranged only within the 180-degree central angle range of the rolling die 3, that is, the electric heating tube 4 is only arranged within 1/2 circle in the circumferential direction. Taking the roll forging die in the roll forging machine as an example, the angle used is usually 170 degrees to 175 degrees. The cable 6 of each electric heating tube 4 passes through the corresponding hole on the die positioning ring 9 and is electrically connected to the rotating part 81 of the annular slip ring 8. After the stationary part 82 of the annular slip ring 8 is connected to the power supply device, each electric heating tube 4 can be powered, and the electric heating tube 4 directly heats or keeps the rolling die 3 warm, thereby achieving heating or keeping the rolled material warm.

It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

A rolling die heating method, characterized by comprising:

The rolling die is heated by an electric heating tube embedded in the roller and close to the outer peripheral surface of the roller;

Alternatively, the rolling die is directly heated by the electric heating pipe embedded in the rolling die and close to the outer peripheral surface of the rolling die;

Alternatively, the rolling die is heated simultaneously by the electric heating tube embedded in the rolling die and close to the outer peripheral surface of the rolling die, and the electric heating tube embedded in the rolling roller and close to the outer peripheral surface of the rolling roller.
A rolling processing system with a heating function, comprising a roller drive system, a roller and a rolling die sleeved on the roller, wherein the roller is sleeved on a half shaft of the roller drive system, and is characterized in that it also comprises:

The electric heating tube is embedded only in the roller and arranged close to the outer peripheral surface of the roller; or, the electric heating tube is embedded only in the rolling die and arranged close to the outer peripheral surface of the rolling die; or, the electric heating tube is embedded and installed in the roller and the rolling die respectively, and the electric heating tube in the roller is arranged close to the outer peripheral surface of the roller, and the electric heating tube in the rolling die is arranged close to the outer peripheral surface of the rolling die;

An electric slip ring, wherein the stationary part of the electric slip ring is mounted on the roller drive system and electrically connected to the power supply device, the rotating part of the electric slip ring is connected to the roller or the half shaft, and the electric heating tube is electrically connected to the rotating part of the electric slip ring through a cable.
The rolling processing system with heating function according to claim 2 is characterized in that the electric heating tube is a linear electric heating tube, and the linear electric heating tube is only embedded in the rolling roller; a plurality of the linear electric heating tubes are evenly arranged along the circumference of the rolling roller, and any one of the linear electric heating tubes is arranged parallel to the axial direction of the rolling roller, and any one of the linear electric heating tubes is electrically connected to the rotating part of the electric slip ring through a cable.
The rolling processing system with heating function according to claim 3 is characterized in that the electric slip ring is an end slip ring, the end slip ring is located at one axial end of the semi-shaft, the rotating part of the end slip ring is connected to the semi-shaft, and any one of the linear electric heating tubes is connected to the The rotating part of the end slip ring is electrically connected.
The rolling processing system with heating function according to claim 4 is characterized in that it also includes a wiring plug, which is arranged in the half-shaft; a plurality of wire grooves are opened inside the end of the roller close to the end face slip ring, and the wire grooves are arranged one by one with the linear electric heating tubes, and any of the wire grooves are distributed along the radial direction of the roller, and the inner end of any of the wire grooves is connected with the interior of the half-shaft, and the cable of any of the linear electric heating tubes passes through the corresponding wire groove into the half-shaft and is electrically connected to one end of the wiring plug, and the other end of the wiring plug is electrically connected to the rotating part of the end face slip ring.
The rolling processing system with heating function according to claim 2 is characterized in that the electric heating tube is a linear electric heating tube, and the linear electric heating tube is only embedded in the rolling mold; a plurality of the linear electric heating tubes are evenly arranged along the circumference of the rolling mold, and any one of the linear electric heating tubes is arranged parallel to the axial direction of the rolling mold, and any one of the linear electric heating tubes is electrically connected to the rotating part of the electric slip ring through a cable.
The rolling processing system with heating function according to claim 6 is characterized in that the electric slip ring is an end slip ring, the end slip ring is located at one axial end of the half shaft, the rotating part of the end slip ring is connected to the half shaft, and any one of the linear electric heating tubes is electrically connected to the rotating part of the end slip ring through a cable.
The rolling processing system with heating function according to claim 7 is characterized in that it also includes a plurality of wiring plugs, which are arranged on the outer periphery of the half-shaft and are arranged one-to-one with the linear electric heating tubes, and any one of the linear electric heating tubes is electrically connected to one end of the corresponding wiring plug through a cable, and the other end of any one of the wiring plugs is electrically connected to the rotating part of the end face slip ring through a cable passed through the inside of the half-shaft.
The rolling processing system with heating function according to claim 6 is characterized in that the electric slip ring is an annular slip ring sleeved on the outer circumference of the rolling roller, the inner ring of the annular slip ring is connected to the rolling roller as a rotating part, and the outer ring of the annular slip ring is installed on the rolling roller drive system as a stationary part; any one of the linear electric heating tubes is electrically connected to the rotating part of the annular slip ring through a cable.
The rolling processing system with heating function according to claim 9 is characterized in that: The annular slip ring is arranged closely to or spaced apart from the rolling die.