阅读说明：本技术 杆件加热方法、加热设备及计算机可读存储介质 (Rod heating method, heating device and computer readable storage medium ) 是由 蒋荣国 刘皓 蒋红亮 罗震 张大伟 于 2019-11-05 设计创作，主要内容包括：本发明提供了一种杆件加热方法、加热设备及计算机可读存储介质,其中杆件加热方法包括：对杆件的预设位置进行加热；当加热的时间到达预设时间和/或加热的温度到达预设温度时,将所述杆件向加热单元内移动预设距离继续加热。本发明的杆件加热方法能够显著缩短杆件在局部加热过程中处于加热单元炉口处的温度与组织过渡区的长度,显著缩短加热热影响球化区组织的长度,提高热影响区的硬度。(The invention provides a rod heating method, a heating device and a computer readable storage medium, wherein the rod heating method comprises the following steps: heating a preset position of the rod piece; and when the heating time reaches the preset time and/or the heating temperature reaches the preset temperature, moving the rod piece in the heating unit for a preset distance to continue heating. The rod piece heating method can obviously shorten the temperature of the rod piece at the furnace mouth of the heating unit and the length of the tissue transition area in the local heating process, obviously shorten the length of the tissue of the heating heat affected spheroidizing area and improve the hardness of the heat affected area.)

1. A method of heating a rod, comprising:

heating a preset position of the rod piece;

and when the heating time reaches the preset time and/or the heating temperature reaches the preset temperature, moving the rod piece in the heating unit for a preset distance to continue heating.

2. The rod heating method according to claim 1, further comprising:

and after the rod is continuously heated to the target temperature and is kept warm for the target time, the rod is withdrawn from the heating unit for cooling.

3. The method of claim 1, wherein the step of heating the rod includes,

the value range of the preset distance is larger than or equal to 50 mm.

4. The rod heating method according to claim 1, further comprising:

the preset time ranges from 120s to 180 s.

5. The rod heating method according to claim 1, wherein the heating temperature to a preset temperature comprises:

acquiring that the heating temperature at the preset position reaches a first temperature threshold; and/or

And acquiring that the heating temperature of the rod piece positioned at the furnace mouth of the heating unit reaches a second temperature threshold value.

6. The method of claim 5, wherein the step of heating the rod includes,

the value range of the first temperature threshold is 650 ℃ to 750 ℃;

the second temperature threshold value ranges from 450 ℃ to 550 ℃.

7. The method of claim 1, wherein the step of heating the rod includes,

the rod piece is a steel rail, and the preset position is a steel rail profiling heel.

8. The method of claim 1, wherein the step of heating the rod includes,

the heating unit is an induction heating furnace with openings at two ends.

9. Heating device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the bar heating method according to any of claims 1 to 8 when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out a method for heating a rod according to any one of claims 1 to 8.

Technical Field

The invention relates to the field of workpiece processing, in particular to a rod heating method, heating equipment and a computer readable storage medium.

Background

With the rapid development of railways towards the direction of high speed and heavy load, the line transportation density is gradually increased, the requirement on the smoothness of train operation is higher and higher, in order to further prolong the service life of line rails and improve the safety and reliability of operation, the current railway general companies require that the turnout and the main line all adopt on-line heat treatment rails, meanwhile, an asymmetric section switch rail, a point rail and a special-shaped rail for connecting different rail type lines which are used as key components for guiding and converting in the turnout, the heel end part of the turnout is hot forged into another standard rail which can be conveniently connected with the line, and the heel end part performance caused by high-temperature forging is reduced, so that the forging local area also needs to be subjected to secondary heat treatment to recover the performance, thereby meeting the use requirement of rail pieces.

With the further improvement of the requirements, in order to ensure that the local forging press area of the steel rail is consistent with the overall performance of the online heat treatment raw material part and improve the heat treatment quality of the profiling heel end of the rail piece, the profiling heel end of the steel rail is gradually strengthened by adopting a full-section heating and continuous air-jet cooling mode in the industry at present, so that the strengthening effect and the stable reliability of the quality are further improved. Because the local heat treatment of rail is strengthened and need to carry out the heating for a longer time to full section, consequently can produce the temperature and the tissue transition district of a certain length range in rail heating and non-heating part, this region can cause the metal structure inhomogeneous by the temperature gradient reason, there is the granular structure of certain range, thereby produce the hardness softening zone of certain width, so the softening zone is great, in actual line application, easily lead to because long-term impact, vibration and roll the local quick wear that causes, so-called saddle shape wearing and tearing, be unfavorable for the ride comfort of train operation, can influence the efficiency of line operation for a long time, reduce the life of rail, improve the line maintenance cost.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, the invention provides, in a first aspect, a method for heating a rod.

A second aspect of the invention provides a heating apparatus.

A third aspect of the invention provides a computer-readable storage medium.

In view of the above, according to a first object of the present invention, there is provided a rod heating method, including: heating a preset position of the rod piece; and when the heating time reaches the preset time and/or the heating temperature reaches the preset temperature, moving the rod piece in the heating unit for a preset distance to continue heating.

According to the technical scheme, in the process of heating the rod piece, after the rod piece is subjected to primary heating, the rod piece moves a preset distance into the heating device to be continuously heated, so that the temperature of the rod piece at the furnace mouth of the heating unit and the length of a tissue transition area in the local heating process can be obviously shortened, the length of a heating heat affected spheroidizing area tissue is obviously shortened, and the hardness of the heat affected area is improved.

Furthermore, the time and/or the temperature of the preliminary heating of the rod piece are/is used as the standard for moving the rod piece in the heating unit, so that the heating control of the rod piece is more accurate, and the heating effect of the rod piece is uniform during the batch heat treatment of the rod piece.

Specifically, when the rod piece heating method is used for locally heating the rail piece, the rail piece is moved for a certain distance into the heating unit after being heated for a certain time to form a sectional type heating mode, so that the heating temperature of the rail piece outside a furnace mouth is reduced, the temperature gradient of a heating and non-heating transition area is improved, the width range of a heat affected area is shortened, and the local quenching quality of the steel rail is improved. The impact abrasion and the irregularity caused by the large width and the low hardness of a heat affected zone when the train passes through the rail piece are reduced. Avoid rail spare wearing and tearing to cause lists the operation accident, extension rail spare life.

In addition, according to the rod heating method in the above technical solution provided by the present invention, the following additional technical features may also be provided:

in the above technical solution, preferably, the rod heating method further includes: and after the rod piece is continuously heated to the target temperature and is kept warm for the target time, the rod piece is withdrawn from the heating unit for cooling.

In the technical scheme, after the rod piece moves to the heating unit for the preset distance, the heating is further continued until the heating temperature reaches the target temperature, the target time is kept, the rod piece can reach the expected heating effect, and then the rod piece is moved out of the heating unit to be cooled, so that the heating of the rod piece is completed.

In any of the above technical solutions, preferably, a value range of the preset distance is greater than or equal to 50 mm.

In the technical scheme, the selection of the preset distance is positively correlated with the rod heating target temperature, the higher the rod heating target temperature is, the larger the selection of the preset distance is, and through the selection of the preset distance being greater than or equal to 50mm, the temperature formed by the rod in the local heating process and the length of the tissue transition area can be at least shortened by 50mm, the length of the tissue of the heating heat affected spheroidizing area is obviously shortened, and the hardness of the heat affected spheroidizing area is improved.

In any of the above technical solutions, preferably, the rod heating method further includes: the preset time ranges from 120s to 180 s.

In the technical scheme, the preset time is used as the standard for moving the rod piece into the heating unit, and the rod piece is selected from 120s to 180s, so that the rod piece can reach the preliminary heating effect, and the rod piece does not move into the heating unit when a longer temperature and tissue transition region is formed at the furnace mouth of the heating unit, the length of the heating heat affected spheroidizing region tissue can be obviously shortened, and the hardness of the heat affected zone is improved.

In any of the above technical solutions, preferably, the heating to the preset temperature includes: acquiring that the heating temperature at a preset position reaches a first temperature threshold; and/or acquiring that the heating temperature of the rod at the furnace mouth of the heating unit reaches a second temperature threshold.

In the technical scheme, the heating temperature of the rod piece is used as the standard for moving the rod piece into the heating unit, and further, the rod piece heating control is more accurate based on the temperature of the rod piece at the preset position in the heating unit and/or the temperature of the rod piece at the furnace mouth of the heating unit as the standard for moving into the heating unit, and the produced rod piece can be ensured to have uniform heating effect when the rod piece is processed in multiple batches.

In any of the above technical solutions, preferably, the first temperature threshold has a value range of 650 ℃ to 750 ℃; the second temperature threshold ranges from 450 ℃ to 550 ℃.

In the technical scheme, the node of the rod piece moving in the heating unit is determined by selecting the first temperature threshold and the second temperature threshold, so that the rod piece can reach the primary heating effect, and the rod piece moves in the heating unit when the rod piece does not form a longer temperature and tissue transition region at the furnace mouth of the heating unit, the length of the tissue of the heating heat affected spheroidizing region is obviously shortened, and the hardness of the heat affected zone is improved.

In any one of the above technical solutions, preferably, the rod is a steel rail, and the preset position is a steel rail profiling heel.

In the technical scheme, the profiling heel end of the steel rail is subjected to heating treatment, so that the heat treatment quality of the profiling heel end of the rail piece can be improved, the consistency of the overall performance of a local steel rail forging area and an online heat treatment raw material part is ensured, meanwhile, the temperature of the steel rail at a heating unit furnace mouth and the length of a tissue transition area in the local heating process can be obviously shortened, the length of a heating heat affected spheroidizing area tissue is obviously shortened, the hardness of the heat affected spheroidizing area is improved, and the service life of the steel rail is prolonged.

In any of the above technical solutions, preferably, the heating unit is an induction heating furnace with two open ends.

In this technical scheme, induction heating furnace's rate of heating is fast, can shorten member heating in-process temperature and organize the length of transition district, further chooses for use both ends open-ended induction heating furnace for use, is convenient for heat the position of predetermineeing of member, and the removal of the member of being convenient for uses more conveniently.

According to the second object of the present invention, there is also provided a heating apparatus, which includes a memory, a processor and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the rod heating method according to any of the above technical solutions. The heating equipment comprises the whole technical effects of the rod heating method.

According to a third object of the present invention, a computer-readable storage medium is also proposed, on which a computer program is stored, the computer program being executed by a processor to implement the bar heating method according to any of the above-mentioned technical solutions. The computer readable storage medium includes all technical effects of the bar heating method.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a flow chart of a rod heating method according to a first embodiment of the present invention;

FIG. 2 is a flowchart illustrating a rod heating method according to a second embodiment of the present invention;

FIG. 3 is a flow chart of a rod heating method according to a third embodiment of the present invention;

FIG. 4 is a flowchart illustrating a rod heating method according to a fourth embodiment of the present invention;

FIG. 5 is a schematic block diagram of a heating apparatus of one embodiment of the present invention;

FIG. 6 is a schematic illustration of a rail in a quiescent heating state in accordance with one embodiment of the present invention;

FIG. 7 is a schematic view of a rail according to an embodiment of the invention moving into the furnace and then heating.

Wherein, the correspondence between the reference numbers and the part names in fig. 5 to 7 is:

100 heating equipment, 110 storage, 120 processor, 130 induction heating furnace, 140 steel rail.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

A bar heating method, a heating apparatus, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 7.