Method for preventing number mixing of steel types in double-row walking beam furnace

Abstract

The invention provides a method for preventing number mixing of steel types in a double-row walking beam furnace, which belongs to the technical field of steel smelting, and comprises the following steps: dividing the heating furnace into a plurality of heating sections, and recording the length of each heating section; the multiple steel billets are numbered, and information of each steel billet is recorded; feeding a plurality of steel billets into a heating furnace one by one, and recording the initial position and initial time of each steel billet entering the heating furnace; all the steel billets synchronously move by a set step pitch every a set step period; and the real-time position of each steel billet is calculated and recorded every set stepping period. The method can accurately determine the specific position, number, furnace number, steel grade, size, weight and initial time of entering the heating furnace of the steel billet in the heating furnace, effectively ensures the continuity of loading the steel billet in the heating furnace, effectively ensures the compact production rhythm, solves the energy waste of the whole production line, effectively reduces the empty step pitch in the heating furnace, and improves the production efficiency. And the oxidation burning loss of the steel billet is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of steel smelting, and more specifically, relates to a method for preventing steel grade mixing in a double-row walking beam heating furnace. Background Art

[0002] The heating furnace process is the beginning of the entire steel rolling process. In order to maximize benefits, many customers place orders for multiple specifications and small batches. Therefore, during the heating furnace production process, the types of steel in the same furnace will be diversified. The same furnace may be loaded with multiple brands of steel, and some steel types may even be loaded with only one steel bar when loaded into the furnace, or multiple furnaces of the same steel type may be loaded into the furnace. In addition, the length of the billet is also diversified according to the length of the finished product and the output. No matter which of the above situations is the case, it is easy to mix up the numbers during the production process. If it is sold to the customer, it will be a great loss. If the customer has completed the processing and used it in some important places, and an accident or failure occurs, the loss will be immeasurable.

[0003] Under the current production conditions, the double-row walking beam heating furnace still wants to load as much steel as possible to increase production and consume less energy, and it must not cause mixed-number accidents, especially when the shift handover is unclear, when an accident occurs and the steel is poured forward or backward, or when the network is interrupted, and the steel types at different positions in the furnace are unknown, these are the high incidence periods of mixed-number steel types. In order to avoid mixed-number steel types, advanced technical means and reasonable logic are required. In order to ensure the uniformity of the temperature of the billet charged into the furnace, the double-row walking beam heating furnace is charged with steel alternately by two water beams. In order to maximize the output and load more steel, small empty steps or no empty steps are left between different steel types or different furnace numbers of the same steel type. In the event of sudden failures, shift handovers, etc., it is necessary to pour the steel backward to ensure the temperature of the billet at the furnace head. In production, the billet needs to be prepared for multiple steps forward. This can easily cause the same step-forward beam to pour steel backward or forward more than twice in a row, causing the billets on the two rows of beams to be misaligned, resulting in mixed-number accidents, resulting in quality and economic losses. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preventing steel grade mixing in a double-row walking beam heating furnace, so as to solve the problem that steel grade mixing accidents are prone to occur in the double-row walking beam heating furnace in the prior art.

[0005] In order to achieve the above object, the present invention provides a method for preventing steel grade mixing in a double-row walking beam heating furnace, comprising:

[0006] Divide the heating furnace into multiple heating sections and record the length of each heating section;

[0007] Numbering multiple steel billets respectively and recording information of each steel billet;

[0008] Feed multiple billets into the heating furnace one by one, and record the initial position and initial time of each billet entering the heating furnace;

[0009] Every time a set step cycle is passed, all the steel billets are synchronously moved by a set step distance;

[0010] At every set stepping cycle, the real-time position of each billet is calculated and recorded.

[0011] Optionally, the method for preventing steel grade mixing in a double-row walking beam heating furnace further includes:

[0012] The number, information and real-time position of each steel billet are stored by the host computer and displayed graphically.

[0013] Optionally, the step of feeding the plurality of steel billets into the heating furnace one by one and recording the initial position of each steel billet entering the heating furnace comprises:

[0014] The steel billets are delivered one by one to the walking beam by a steel delivery machine;

[0015] The initial position is calculated by the length of the steel feeder penetrating into the heating furnace.

[0016] Optionally, the set stepping period is the stepping period of the stepping beam, and the set step length is the step length of the stepping beam.

[0017] Optionally, calculating and recording the real-time position of each steel billet at each set stepping cycle includes:

[0018] The real-time position of each steel billet is calculated according to the set step length and the number of moving steps.

[0019] Optionally, the information of each of the steel billets includes:

[0020] The billet number, furnace number, steel type, size, weight, initial time of entering the heating furnace, size, weight and specifications of the finished product.

[0021] Optionally, the method for preventing steel grade mixing in a double-row walking beam heating furnace further includes:

[0022] The size of each of the steel billets is shown in a graphical manner and in proportion;

[0023] The serial number, furnace number, steel type, size, weight and initial time of entering the heating furnace of each steel billet are displayed in text.

[0024] Optionally, the method for preventing mixing of steel grades in a double-row walking beam heating furnace further includes: when the conditions for steel tapping are met, the host computer prompts the steel billet that enters the heating furnace earliest to tap through graphics.

[0025] The beneficial effects of the present invention are: providing a method for preventing steel grade mixing in a double-row walking beam heating furnace, including dividing the heating furnace into multiple heating sections and recording the length of each heating section; numbering multiple billets respectively and recording the information of each billet; sending multiple billets into the heating furnace one by one, recording the initial position and initial time of each billet entering the heating furnace; every interval of a set step cycle, all the billets synchronously move a set step distance; every interval of a set step cycle, calculate and record the real-time position of each billet. The method can accurately determine the specific position, number, furnace number, steel grade, size, weight, and initial time of entering the heating furnace of the billet in the heating furnace, effectively ensure the continuity of billet loading in the heating furnace, effectively ensure the compact production rhythm, solve the energy waste of the entire production line, effectively reduce the empty step distance in the heating furnace, and reduce the oxidation and burning loss of billets.

[0026] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0028] Figure 1 A flow chart of a method for preventing steel grade mixing in a double-row walking beam heating furnace according to Embodiment 1 of the present invention is shown.

[0029] Figure 2 A schematic diagram of a steel billet auxiliary material diagram according to the second embodiment of the present invention is shown.

[0030] Figure 3 A schematic diagram showing detailed information of a real-time steel billet according to a second embodiment of the present invention is shown.

[0031] Figure 4 A partial schematic diagram of a steel billet auxiliary material diagram according to the second embodiment of the present invention is shown.

[0032] Figure 5 A schematic diagram showing detailed information of a steel billet saved in the background according to the second embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, this embodiment provides a method for preventing steel grade mixing in a double-row walking beam heating furnace, comprising:

[0036] S1: Divide the heating furnace into multiple heating sections and record the length of each heating section;

[0037] S2: numbering the multiple steel billets respectively and recording the information of each steel billet;

[0038] Specifically, in this step, the information of each steel billet includes: the billet number, furnace number, steel type, size, weight, initial time of entering the heating furnace, and the size, weight and specification of the finished product. The size of each steel billet is displayed in proportion through graphics; the billet number, furnace number, steel type, size, weight, and initial time of entering the heating furnace are displayed through text.

[0039] S3: feeding multiple steel billets into the heating furnace one by one, and recording the initial position and initial time of each steel billet entering the heating furnace;

[0040] Specifically, in this step, a plurality of steel billets are delivered to the walking beam one by one by a steel feeder; and the initial position is calculated by the length of the steel feeder penetrating into the heating furnace.

[0041] S4: every time a set step cycle is passed, all the steel billets are synchronously moved by a set step distance;

[0042] Specifically, in this step, the set stepping period is the stepping period of the stepping beam, and the set step length is the step length of the stepping beam.

[0043] S5: Calculate and record the real-time position of each billet at every set step cycle.

[0044] Specifically, in this step, the real-time position of each billet is calculated according to the set step size and the number of moving steps.

[0045] S6: The host computer stores and graphically displays the number, information and real-time position of each steel billet.

[0046] S7: When the conditions for steel tapping are met, the host computer prompts the steel billet that enters the heating furnace first to tap through graphics.

[0047] Embodiment 2

[0048] This embodiment provides a method for preventing steel grade mixing in a double-row walking beam heating furnace, comprising:

[0049] The length of each section and the total length of the heating furnace are input into the secondary program of the heating furnace. The moment the heating furnace steel feeder sends the steel billet to the walking beam, the time for each steel billet to enter the furnace is recorded, and then the initial position of the heating section is calculated by the length of the steel feeder penetrating into the furnace. The secondary program records the distance from the inner wall of the heating furnace to the original position of the steel feeder. The distance from the inner wall of the heating furnace to the original position of the steel feeder is subtracted from the distance from the inner wall of the heating furnace to the original position of the steel feeder, which is the initial position of the steel billet in the heating furnace. The calculation is combined with the travel of each step of the walking beam to locate the coordinates of the steel billet at all times.

[0050] At the same time, the order number, furnace number, specification of each billet is marked on the billet laying diagram in the secondary heating furnace of the host computer, and different steel types are distinguished by color. Figure 2 As shown, reference numeral 1 represents a steel billet, and each steel billet has a serial number, a furnace number, and different steel grades are distinguished by color. Figure 3 As shown, you can also click to query the steel type, sequence number, furnace number, billet length, width and thickness, weight, and specific time the billet enters each heating section. As the walking beam moves forward, the corresponding time the billet spends in the furnace will also change in real time, and the time each section has spent in the furnace can be accurately recorded and transmitted to the background data in real time. Attachment 2 is the dividing line between the heating sections, and Attachment 3 shows that this heating furnace is a double-row walking beam heating furnace, with the billet located in the second lane. Figure 3 As shown, the detailed information of each billet can also be viewed by clicking. According to the steel loading time recorded by the secondary system, when the steel tapping signal lights up and steel is required, the billet that was first loaded into the furnace on the material laying diagram in the secondary system heating furnace will flash, reminding the steel tapper to take out the first billet that entered the furnace.

[0051] like Figure 4 As shown, according to the movement of the walking beam, the secondary billet laying diagram will be proportionally divided according to the long and short sizes of the billets entering the furnace.

[0052] The above change information is updated and stored in the host computer in real time, such as Figure 5 As shown, the data stored in the background can be viewed, which is convenient for checking the information of the billet out of the furnace when special situations occur, such as network signal interruption, confusion in the steel pouring before and after the walking beam, etc.

[0053] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for preventing steel grade mixing in a double-row walking beam heating furnace, characterized in that: include: Divide the heating furnace into multiple heating sections and record the length of each heating section; Numbering multiple steel billets respectively and recording information of each steel billet; Feed multiple billets into the heating furnace one by one, and record the initial position and initial time of each billet entering the heating furnace; Every time a set step cycle is passed, all the steel billets are synchronously moved by a set step distance; At every set stepping cycle, the real-time position of each billet is calculated and recorded.

2. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 1 is characterized in that: Also includes: The number, information and real-time position of each steel billet are stored by the host computer and displayed graphically.

3. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 1, characterized in that: The method of feeding a plurality of steel billets into the heating furnace one by one and recording the initial position of each steel billet entering the heating furnace comprises: The steel billets are delivered one by one to the walking beam by a steel delivery machine; The initial position is calculated by the length of the steel feeder penetrating into the heating furnace.

4. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 3 is characterized in that: The set stepping period is the stepping period of the stepping beam, and the set step length is the step length of the stepping beam.

5. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 1, characterized in that: The real-time position of each steel billet is calculated and recorded at each set stepping cycle, including: The real-time position of each steel billet is calculated according to the set step length and the number of moving steps.

6. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 2, characterized in that: The information of each billet includes: The billet number, furnace number, steel type, size, weight, initial time of entering the heating furnace, size, weight and specifications of the finished product.

7. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 6, characterized in that: Also includes: The size of each of the steel billets is shown in a graphical manner and in proportion; The serial number, furnace number, steel type, size, weight and initial time of entering the heating furnace of each steel billet are displayed in text.

8. The method for preventing steel grade mixing in a double-row walking beam heating furnace according to claim 2, characterized in that: Also includes: When the conditions for steel tapping are met, the host computer prompts the steel billet that enters the heating furnace first to tap through graphics.

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