A method for measuring and calibrating a hammer head of a constant-width press

Abstract

The present application relates to a kind of fixed-width press hammer head measurement and calibration method, steps are: confirming and operating press module angle is 180 °, the distance between the two hammer heads of operating side and transmission side is measured, the distance between the hammer head of work side and the outer edge of the transmission side of lower guide roll is measured, the distance between the outer edge of the hammer head of transmission side and the outer edge of the work side of lower guide roll is measured, the distance between the parallel surface of work side hammer head and the lower edge of hammer head back plate is measured, the distance between the parallel surface of transmission side hammer head and the lower edge of hammer head back plate is measured, each measurement is calculated, and the calculation result is input into operating picture to be calibrated.The present application measures and calculates after replacing fixed-width press hammer head, the opening degree of fixed-width press hammer head is quickly obtained, and the centering degree of fixed-width press hammer head after replacing hammer head is ensured, single person can be quickly measured, the symmetry of hammer head center is ensured after measurement through calculation, the precision control of hot-rolled strip width and the accuracy of rolling centering are ensured.

Description

Technical Field

[0001] This patent application belongs to the field of hot rolling production technology, and more specifically, it relates to a method for measuring and calibrating the hammerhead of a fixed-width press. Background Technology

[0002] As a key control technology in hot rolling production, continuous casting and rolling has developed rapidly and can meet and adapt to various user requirements for strip dimensions. To achieve width adjustment between continuous casting and continuous rolling, two commonly used width adjustment technologies are vertical roll rolling and fixed-width press with large side pressure. Among these, the development and application of fixed-width presses have improved width adjustment efficiency, reduced cutting losses at the slab head and tail, and effectively increased the capacity of slab continuous casting machines.

[0003] Because the width adjustment technology of hot rolling production lines relies on slab width-fixing presses, the opening degree and centering degree of these presses dynamically change during actual production due to mechanical wear and hammer replacement. If the control deviation exceeds the standard range, it will seriously affect production and product quality. Traditional instrument-based methods for measuring centering and opening degree have long measurement cycles and times per measurement, and cannot effectively address the impact of equipment status changes on centering and opening degree.

[0004] Therefore, when replacing the hammerhead of a fixed-width press, it is necessary to adopt a fast and accurate measurement and calibration method to ensure that the opening and centering of the hammerhead meet the standard requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for measuring and calibrating the hammerhead of a fixed-width press. After the hammerhead of a fixed-width press is replaced in daily operations, the centering and opening values ​​of the hammerhead can be obtained quickly and accurately by measuring on-site and combining with existing automated control programs to meet the requirements of centering control in production rolling and accurate control of the width of the finished strip steel.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A method for measuring and calibrating the hammerhead of a fixed-width press includes the following steps: S1. Measure the dimensions of the new width-fixing machine hammer head to be replaced on the machine. There are two new width-fixing machine hammer heads, and their dimensions are recorded as d and e respectively. S2. In the existing automatic control interface of the width-fixing machine hammer, manually move the main drive angle of the width-fixing machine that controls the hammer to the required angle, such as 180°. S3. Input the measurement dimensions d and e of the new width-fixing machine hammer head to be replaced into the designated data input window on the operation screen, and read the data; S4. Measure the opening of the newly replaced width-fixing machine hammer and perform further precise calibration.

[0007] Furthermore, in step S1, the dimensions of the newly processed width-fixing machine hammer head are measured using a ruler.

[0008] Furthermore, in step S4, the specific steps are as follows: S41. Measure the distance a between the outer edges of the two hammers on the operating side and the transmission side. Subtract 320mm from the measured value a to get the hammer roll gap opening value. S42. Compare the obtained new width-fixing machine hammer head roll gap opening value with the hammer head gap value displayed on the width-fixing machine hammer head automatic control interface. If the difference is ≤3mm, proceed to step S49; if the difference is >3mm, continue to step S43. S43. Select the calibration screen in the automatic control interface of the width fixing machine hammer and switch the hammer roll gap control mode to manual mode; S44. Measure the distance c between the outer edge of the working side hammer and the outer edge of the lower guide roller drive side. S45. Measure the distance b between the outer edge of the hammer head on the transmission side and the outer edge of the working side of the lower guide roller; S46. Substitute the two measured values ​​c and b obtained in steps S44 and S45 into the formula calculation model to perform the calculation. S47. Input the calculation results into the specified operation screen input window for calibration; S48. According to steps S41-S41, remeasure the distance between the two hammers on the operating side and the transmission side on site, and check the numerical difference until the numerical difference is within the control range. S49. Calibration complete.

[0009] Furthermore, in step S42, the deviation is 2~5mm, preferably 3mm.

[0010] Furthermore, in step S46, the formula calculation model is as follows: Working side opening L OS = (a+cb) / 2-160 Transmission side opening L DS = (a+bc) / 2-160.

[0011] In step S2, the main drive angle of the width-fixing machine controlling the hammer head is manually moved to 180°. Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are: This method is applicable to the width-fixing press in hot continuous rolling mills in the metallurgical industry. When a new width-fixing press hammer needs to be replaced, the dimensions of the new hammer to be installed are measured offline and entered into the human-machine interface of the width-fixing press automation control system for calibration. To ensure the accuracy of the hammer's opening and centering, the method for measuring, calculating, and calibrating the width-fixing press hammer after replacement is further provided. This ensures the accuracy of rolling centering of continuously cast slabs and the control of product width quality during production, and has high application value.

[0012] This invention allows for on-site measurement and calculation after replacing the hammerhead of a width-fixed press, quickly determining the opening degree of the hammerhead and ensuring its centering accuracy after replacement. It enables rapid measurement by a single person, and the calculations ensure the symmetry of the hammerhead center, guaranteeing precise control of the hot-rolled strip width and accurate rolling centering.

[0013] This method is simple and practical. After changing the hammerhead of a fixed-width press, it can quickly and accurately obtain the centering and opening values ​​of the hammerhead by measuring on-site and combining it with the existing automated control program to meet the centering control of production rolling and the accurate control of the width of the finished strip steel. It is suitable for large-scale promotion. Attached Figure Description

[0014] Figure 1 This is a flowchart of the measurement calibration method of the present invention; Figure 2 This is a schematic diagram of the measurement of the new hammerhead of the present invention; Figure 3 This is a schematic diagram of the measurement after replacing the hammer head in this invention.

[0015] Among them, 1 and 2 are newly processed width-fixing machine hammers, and 3 is the lower guide roller. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the embodiments.

[0017] To achieve the above objectives, this invention provides a method for measuring and calibrating the hammerhead of a fixed-width press. For the specific measurement and calibration process, please refer to [link to relevant documentation]. Figure 1 As shown, it includes the following steps: First, measure the dimensions of the new width-fixing machine hammers to be replaced on the machine. The new width-fixing machine hammers 1 and 2 are either newly prepared parts or old hammers that have been turned to remove surface cracks after each use and are ready to be used on the machine. Their hammer dimensions d and e are not fixed values ​​and need to be measured with a ruler.

[0018] Combination Figure 2 The newly processed width-fixing machine hammers 1 and 2 are irregularly shaped and trapezoidal in structure. The measurement is of the widest part, denoted as d and e.

[0019] Second, in the existing human-machine interface window of the width-fixing machine's automated control program, the main drive angle of the width-fixing machine controlling the hammer head is manually moved to the required angle, which is 180° in this embodiment; the specified operation screen is the human-machine interface of the width-fixing machine's automated control system.

[0020] Third, input the measurement dimensions d and e of the newly installed width-fixing machine hammers 1 and 2 into the designated data input window of the operation screen, and read the data. The designated operation screen is the human-machine interface of the width-fixing machine's automated control system.

[0021] Fourth, measure the opening of the newly replaced width-fixing machine hammers 1 and 2, and further complete the precise calibration. The measurement methods and steps are as follows: (1) Measure the distance 'a' between the outer edges of the two hammers on the operating side and the transmission side. Subtract 320mm from the measured value 'a' to get the hammer head roll gap opening value. Compare the measured hammer head roll gap opening value 'a-320mm' with the hammer head gap value displayed on the hammer head automatic control interface. The deviation should be controlled within 2~5mm. In this embodiment, the deviation should be controlled within 3mm. If the difference between the above values ​​is ≤3mm, that is, (a-320mm-hammer head gap value) ≤3mm, the calibration is complete. Otherwise, proceed to the following steps.

[0022] (2) If the measured hammer head roll gap value a-320mm differs from the hammer head gap value displayed on the hammer head automatic control interface by more than 3mm, then continue with the following calibration steps: ① On the automated control interface of the width-fixing machine, select the calibration screen and switch the hammer head roll gap control mode to manual mode; ② Measure the distance c between the outer edge of the working side hammer and the outer edge of the transmission side of the lower guide roller 3; ③ Measure the distance b between the outer edge of the hammer head on the transmission side and the outer edge of the working side of the lower guide roller 3; ④ Substitute the two measured values ​​obtained by the aforementioned measurement method into the formula calculation model for calculation. The formula calculation model is as follows: Working side opening L OS = (a+cb) / 2-160 Transmission side opening L DS = (a+bc) / 2-160 in: a is the distance between the outer edge of the hammer head on the operating side and the outer edge of the hammer head on the transmission side; b is the distance between the outer edge of the hammer head on the transmission side and the outer edge of the working side of the lower guide roller 3; c is the distance between the outer edge of the working hammer and the outer edge of the transmission side of the lower guide roller 3; L OSThis refers to the distance between the outer edge of the operating side hammer and the centerline of the unit. L DS This refers to the distance between the outer edge of the hammerhead on the drive side and the centerline of the unit.

[0023] ⑤Calculate the result L OS and L DS The values ​​are entered into the designated input windows on the operation screen for calibration.

[0024] ⑥ Following step ① of section 4 above, remeasure the distance 'a' between the two hammers on the operating side and the transmission side on-site, and compare the measured hammer roll gap value 'a-320mm' with the hammer gap value displayed on the hammer automatic control interface. If the difference is ≤3mm, the calibration is complete. If the deviation is still >3mm, repeat step ② of section 4 above until the deviation is within the control range.

[0025] This invention discloses a method for measuring and calibrating the hammerhead of a fixed-width press. This method is applicable to the technical field of fixed-width presses in hot continuous rolling mills in the metallurgical industry. The above embodiments are only used to illustrate this invention and are not intended to limit this invention. Any changes or modifications to the above embodiments within the essential spirit of this invention will fall within the scope of the claims of this invention.

Claims

1. A method for measuring and calibrating the hammerhead of a fixed-width press, characterized in that... Includes the following steps: S1. Measure the dimensions of the new width-fixing machine hammer head to be replaced on the machine. There are two new width-fixing machine hammer heads, and their dimensions are recorded as d and e respectively. S2. In the existing automatic control interface for the width-fixing machine hammer, manually adjust the main drive angle of the width-fixing machine that controls the hammer to the required angle. S3. Input the measurement dimensions d and e of the new width-fixing machine hammer head to be replaced into the designated data input window on the operation screen, and read the data; S4. Measure the opening of the newly replaced width-fixing machine hammer head and further complete the precise calibration. The specific steps are: S41. Measure the distance a between the outer edges of the two hammers on the operating side and the transmission side. Subtract 320mm from the measured value a to get the hammer roll gap opening value. S42. Compare the obtained new width-fixing machine hammer head roll gap opening value with the hammer head gap value displayed on the width-fixing machine hammer head automatic control interface. If the numerical difference is ≤ deviation, then proceed to step S49. If the numerical difference is greater than the deviation, then proceed to step S43: S43. Select the calibration screen in the automatic control interface of the width fixing machine hammer and switch the hammer roll gap control mode to manual mode; S44. Measure the distance c between the outer edge of the working side hammer and the outer edge of the lower guide roller drive side. S45. Measure the distance b between the outer edge of the hammer head on the transmission side and the outer edge of the working side of the lower guide roller; S46. Substitute the two measured values ​​c and b obtained in steps S44 and S45 into the formula calculation model to perform the calculation. S47. Input the calculation results into the specified operation screen input window for calibration; S48. According to steps S41-S41, remeasure the distance between the two hammers on the operating side and the transmission side on site, and check the numerical difference until the numerical difference is within the control range of the deviation. S49. Calibration complete.

2. The method for measuring and calibrating the hammerhead of a fixed-width press according to claim 1, characterized in that: In step S1, the dimensions of the newly processed width-fixing machine hammer head are measured using a ruler.

3. The method for measuring and calibrating the hammerhead of a fixed-width press according to claim 2, characterized in that: In step S42, the deviation is 2~5mm.

4. The method for measuring and calibrating the hammerhead of a fixed-width press according to claim 1, characterized in that: In step S46, the formula calculation model is as follows: Working side opening L OS = (a+cb) / 2-160 Transmission side opening L DS = (a+bc) / 2-160.

5. A method for measuring and calibrating the hammerhead of a fixed-width press according to any one of claims 1-4, characterized in that: In step S2, the main drive angle of the width-fixing machine controlling the hammer head is manually adjusted to 180°.

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