A method for quickly calibrating a mold taper gauge

Abstract

This invention belongs to the field of steelmaking continuous casting technology and discloses a method for rapidly calibrating a crystallizer taper gauge. The method employs a calibration device with a zero-point plane and a gain plane to calibrate the taper gauge, including the following steps: S1, adjusting the zero-point plane of the calibration device to be perpendicular to the ground using a level; S2, setting the taper gauge switch to the "calibration" position, sequentially performing zero-point calibration and gain calibration on both the zero-point and gain planes, and repeating the calibration until the error is ≤ ±0.02, then setting the switch to the "measurement" position. The rapid calibration method provided by this invention effectively ensures the measurement accuracy of the taper gauge through precise adjustment of the zero-point plane of the calibration device and repeated calibration of the zero point and gain, thereby ensuring that the taper gauge measurement error meets the error requirements of the steel grade technical specifications.

Description

Technical Field

[0001] This invention belongs to the field of steelmaking continuous casting technology, specifically relating to a method for rapidly calibrating a crystallizer taper. Background Technology

[0002] In the field of continuous casting steelmaking, the taper of the slab mold is primarily adjusted using a taper gauge for calibration. The accuracy of the taper gauge directly determines the precision of the mold taper adjustment. Because the taper gauge is a high-precision instrument, it requires weekly calibration. The accuracy of the taper gauge relies on a dedicated calibration instrument. This calibration instrument requires a specific installation location, often far from the site, making it inconvenient to calibrate the taper gauge frequently, thus compromising its accuracy and directly affecting the accuracy of the mold taper. From an industry-wide perspective, this problem is prevalent in continuous casting steelmaking production practices. The special installation requirements of dedicated calibration instruments limit their convenient application in on-site operating environments, restricting the timeliness and convenience of calibration work. For a long time, ensuring the reliable accuracy of the taper gauge has been one of the technical challenges that the industry needs to solve. In existing technologies, the complexity and inconvenience of the calibration process directly restrict the accuracy of mold taper adjustment.

[0003] Furthermore, in the actual production of continuous casting in steelmaking, the adjustment accuracy of the slab mold taper is crucial for the smooth operation of the entire continuous casting process. The accuracy of the taper gauge, as a calibration tool, directly determines the level of adjustment precision. Given that the taper gauge falls into the category of high-precision instruments, weekly calibration is essential. However, relying on dedicated calibration instruments has significant drawbacks: these instruments must be installed in a specific location, often far from the production site, making it difficult for operators to perform calibration at any time. This inconvenience directly hinders the assurance of taper gauge accuracy and ultimately directly affects the accuracy of the mold taper. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to solve the above problems and provide a method for rapidly calibrating a crystallizer taper.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for rapidly calibrating a crystallizer taper, employing a calibration device with a zero-point plane and a gain plane to calibrate the taper, includes the following steps: S1. Adjust the zero point of the calibration device to be perpendicular to the ground using a level. S2. Set the taper switch to the "calibration" position, perform zero-point calibration and gain calibration on the zero-point plane and gain plane in sequence, and repeat the calibration until the error is ≤ ±0.02. Then set the switch to the "measurement" position.

[0006] Furthermore, after the taper instrument is powered on, it needs to be placed in a vertical position with the display panel facing upwards for 3-5 minutes before calibration and measurement can begin.

[0007] Furthermore, the verticality adjustment of the zero point plane of the calibration device includes: placing the level at the zero point plane calibration point, with the working surface of the level in close contact with the surface being measured, observing the bubble on the level, and moving the bubble towards the center by finely adjusting the bottom bolt of the calibration device. After the bubble has completely stopped, take a reading; rotate the level 180° to its original position and take a reading on the same side. When the difference between the two readings is no more than 1 / 2 division, it is confirmed that the zero point plane has been adjusted to be perpendicular to the ground.

[0008] Furthermore, when taking readings, observe vertically to avoid parallax.

[0009] Furthermore, the zero-point calibration is as follows: place the taper instrument on the zero-point surface of the calibration device, ensure that the three contacts on the instrument are in good contact with the zero-point surface, press the "zero-point button" on the display panel, the instrument displays "0.00" and then the upper row of the display panel displays "calibration", and the zero-point calibration is completed.

[0010] Furthermore, the gain calibration is as follows: place the taper meter on the gain surface of the calibration device, ensure that the three contacts on the instrument and the gain surface are in good contact, wait for the value of the lower digital tube to stabilize, press the "gain button" on the display panel, the instrument displays the standard value of the gain surface, and then the upper row of the display panel displays "calibration", and the gain calibration is completed.

[0011] Next, first perform zero-point calibration, then gain calibration, repeating the calibration until the error is ≤ ±0.02. After calibration, switch to the "measurement" position.

[0012] The beneficial effects of this invention are as follows: The rapid calibration method provided by this invention enables precise calibration of the crystallizer taper gauge, thereby ensuring that the taper gauge's measurement error meets the error requirements of the steel grade technical specifications. This method effectively guarantees the measurement accuracy of the taper gauge through precise adjustment of the zero-point plane of the calibration device and repeated calibration of the zero point and gain. Compared to the shortcomings of existing technologies where dedicated calibration instruments are far from the field and inconvenient to calibrate at any time, this method can quickly complete the calibration work on-site, avoiding the problem of difficulty in guaranteeing accuracy. This directly improves the reliability and accuracy of the taper gauge, resulting in a significant improvement in the adjustment accuracy of the crystallizer taper, and consequently, an increase in the taper qualification rate.

[0013] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Detailed Implementation

[0014] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0015] Example 1 This embodiment provides a method for rapidly calibrating a crystallizer taper, which uses a calibration device with a zero-point plane and a gain plane to calibrate the taper, specifically including the following steps: S1. Adjust the zero point of the calibration device using a level to make it perpendicular to the ground. The specific adjustment process is as follows: Place the level at the zero point calibration position, with the working surface of the level in close contact with the surface being measured. Observe the bubble on the level and move the bubble towards the center by fine-tuning the bolt at the bottom of the calibration device. After the bubble comes to a complete stop, take the reading. Rotate the level 180° to its original position and take the reading on the same side. When the difference between the two readings is no more than 1 / 2 division, it is confirmed that the zero point has been adjusted to be perpendicular to the ground. Observe vertically when taking the reading to avoid parallax.

[0016] S2. After powering on the taper meter, it needs to be placed in a vertical position with the display panel facing upwards for 4 minutes before starting calibration measurements. Set the taper meter switch to the "Calibration" position and perform zero-point calibration and gain calibration sequentially on the zero-point and gain surfaces. Specifically, first perform zero-point calibration: Place the taper meter on the zero-point surface of the calibration device, ensuring good contact between the three contacts on the instrument and the zero-point surface. Press the "Zero Point Button" on the display panel. The instrument will display "0.00," and then the upper row of the display panel will display "Calibration," indicating zero-point calibration is complete. Next, perform gain calibration: Place the taper meter on the gain surface of the calibration device, ensuring good contact between the three contacts on the instrument and the gain surface. After the lower row of digital tubes stabilizes, press the "Gain Button" on the display panel. The instrument will display 18.37 (the standard value for the gain surface), and then the upper row of the display panel will display "Calibration," indicating gain calibration is complete. Repeat the zero-point calibration and gain calibration process until the error is ≤ ±0.02. After calibration, switch the switch to the "Measurement" position. Finally, the taper value was checked again by placing the taper instrument on the zero plane and the gain plane. The error was ≤ ±0.02, and the calibration was completed.

[0017] Example 2 This embodiment provides another method for quickly calibrating a crystallizer taper (using the same technical solution as Embodiment 1, the difference being that in the zero-point calibration stage, if the "display value is inaccurate" situation occurs, the button needs to be pressed again), specifically including the following steps: S1. Adjust the zero point of the calibration device using a level to make it perpendicular to the ground. The specific adjustment process is as follows: Place the level at the zero point calibration position, with the working surface of the level in close contact with the surface being measured. Observe the bubble on the level and move the bubble towards the center by fine-tuning the bolt at the bottom of the calibration device. After the bubble comes to a complete stop, take the reading. Rotate the level 180° to its original position and take the reading on the same side. When the difference between the two readings is no more than 1 / 2 division, it is confirmed that the zero point has been adjusted to be perpendicular to the ground. Observe vertically when taking the reading to avoid parallax.

[0018] S2. After powering on the taper meter, it needs to be placed in a vertical position with the display panel facing upwards for 3 minutes before starting calibration measurements. Set the taper meter switch to the "Calibration" position and perform zero-point calibration and gain calibration sequentially on the zero-point and gain surfaces. Specifically, first perform zero-point calibration: Place the taper meter on the zero-point surface of the calibration device, ensuring good contact between the three contacts on the instrument and the zero-point surface. After pressing the "Zero Point Button" on the display panel, the instrument reading will be inaccurate. Press the Zero Point Button again. The instrument will display "0.00," and then the upper row of the display panel will display "Calibration," indicating that the zero-point calibration is complete. Then perform gain calibration: Place the taper meter on the gain surface of the calibration device, ensuring good contact between the three contacts on the instrument and the gain surface. After the lower row of digital tubes stabilizes, press the "Gain Button" on the display panel. The instrument will display 18.37 (the standard value for the gain surface), and then the upper row of the display panel will display "Calibration," indicating that the gain calibration is complete. First, perform zero-point calibration, then gain calibration. If the error is greater than ±0.02 after the first calibration, repeat the calibration until the error is ≤ ±0.02. After calibration, switch the switch to the "measurement" position. Finally, place the taper meter on the zero-point plane and gain plane again to check the taper value. If the error is ≤ ±0.02, the calibration is complete.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for rapidly calibrating a crystallizer taper, characterized in that, The taper meter is calibrated using a calibration device with a zero-point plane and a gain plane, including the following steps: S1. Adjust the zero point of the calibration device to be perpendicular to the ground using a level. S2. Set the taper switch to the "calibration" position, perform zero-point calibration and gain calibration on the zero-point plane and gain plane in sequence, and repeat the calibration until the error is ≤ ±0.

02. Then set the switch to the "measurement" position.

2. The method for rapidly calibrating a crystallizer taper according to claim 1, characterized in that, After the taper is powered on, it needs to be placed in a vertical position with the display panel facing upwards for 3-5 minutes before calibration and measurement can begin.

3. The method for rapidly calibrating a crystallizer taper according to claim 1, characterized in that, The verticality adjustment of the zero point plane of the calibration device includes: placing the level at the zero point plane calibration point, with the working surface of the level in close contact with the surface being measured, observing the bubble on the level, and moving the bubble towards the center by finely adjusting the bolt at the bottom of the calibration device. After the bubble has completely stopped, take a reading; rotate the level 180° to its original position and take a reading on the same side. When the difference between the two readings is no more than 1 / 2 division, it is confirmed that the zero point plane has been adjusted to be perpendicular to the ground.

4. The method for rapidly calibrating a crystallizer taper according to claim 3, characterized in that, When taking readings, observe vertically to avoid parallax.

5. The method for rapidly calibrating a crystallizer taper according to claim 1, characterized in that, The zero-point calibration is as follows: place the taper instrument on the zero-point surface of the calibration device, ensure that the three contacts on the instrument are in good contact with the zero-point surface, press the "zero-point button" on the display panel, the instrument displays "0.00" and then the upper row of the display panel displays "calibration", and the zero-point calibration is completed.

6. The method for rapidly calibrating a crystallizer taper according to claim 1, characterized in that, The gain calibration is as follows: Place the taper on the gain surface of the calibration device, ensure that the three contacts on the instrument and the gain surface are in good contact, wait for the value of the lower digital tube to stabilize, press the "gain button" on the display panel, the instrument displays the standard value of the gain surface, and then the upper row of the display panel displays "calibration", and the gain calibration is complete.

7. The method for rapidly calibrating a crystallizer taper according to claim 1, characterized in that, First, perform zero-point calibration, then perform gain calibration, repeating the calibration until the error is ≤ ±0.

02. After calibration, switch the switch to the "measurement" position.