Quenching machine gap nozzle rapid adjusting method

Abstract

The invention discloses a rapid adjustment method for a gap nozzle of a quenching machine. The method comprises the following steps: (1) determining a zero reference: taking the side surface of a bearing seat at the front part of the quenching machine as a reference zero point; (2) transverse positioning: measuring the data of the roller bed bearing seats: measuring the mounting sizes of the roller bed bearing seats on the two sides by using a vernier caliper, and calculating a deviation value; according to the calculation result, the positioning check block with the adjustable thickness is welded to the side, with the small deviation, of the end face of the bearing seat, and the check block is welded to fix the zero point position; (3) height positioning: measuring the diameter of the working roller way by adopting an external diameter micrometer, wherein the number of measuring points is not less than five and the measuring points are uniformly distributed; calculating the average value and ovality of the diameters of the roller way; determining a header installation height compensation value according to a calculation result; the invention can greatly reduce the time for adjusting the header, reduce the increase of water consumption, and improve the quenching striking precision of the gap header.

Description

Technical Field

[0001] The present invention relates to a method for quickly adjusting the slit nozzle of a quenching machine. Background Art

[0002] In the field of metal heat treatment, a quenching machine is a key device for realizing the rapid cooling of steel. Among them, the slit header, as the core component of the quenching machine, its position accuracy directly affects the quenching quality and the control of the plate shape. At present, the commonly used adjustment methods in the industry mainly include: (1) Mechanical positioning method: • Rely on manual use of tools such as feeler gauges and micrometers for rough positioning • Multiple trial quenches are required for verification, with an average time consumption of 4 - 6 hours • Dynamic compensation cannot be achieved, and the accuracy gradually decreases with equipment wear (2) Grease impact test method: • Observe the impact marks by applying grease to judge the position • Each experiment consumes 15 - 20 kg of special grease • Oil mist is generated during the experiment, polluting the environment • The results are greatly affected by the operator's experience and have poor repeatability Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for quickly adjusting the slit nozzle of a quenching machine, which can greatly reduce the time for adjusting the header and reduce the increase in water consumption, and improve the quenching impact accuracy of the slit header, aiming at the above-mentioned shortcomings of the existing technologies.

[0004] The technical solution for the present invention to solve the above technical problems is as follows: A method for quickly adjusting the slit nozzle of a quenching machine, comprising the following steps: (1) Determine the zero point reference: Take the side surface of the front bearing seat of the quenching machine as the reference zero point; (2) Lateral positioning: Measure the data of the roller table bearing seat: Use a vernier caliper to measure the installation dimensions of the two roller table bearing seats and calculate the deviation value; Weld the positioning block: According to the calculation result, weld a positioning block with adjustable thickness on the end face of the bearing seat with a smaller deviation, and weld the block to fix the zero point position; (3) Height positioning: Use an outside micrometer to measure the diameter of the working roller table, with no less than 5 measurement points evenly distributed; Calculate the average value and ovality of the roller table diameter; Determine the height compensation value for the header installation according to the calculation result.

[0005] The further limited solution of the present invention: Preferably, it also includes installation adjustment: Position the right side of the header at 500 ± 0.5 mm from the bearing housing; Adjust the elevation difference between the header surface and the roller table surface to 17 ± 0.1 mm; Use a plumb bob with an accuracy of 0.01 mm to detect the alignment of the upper and lower header lips.

[0006] Preferably, the height positioning step in step (3) further includes: Recheck the measured value of the roller table diameter using a laser rangefinder; When the ovality exceeds 0.05 mm, the roller table needs to be ground first; The calculation formula for the height compensation value is: H = 17 + (Dactual - Dstandard) / 2, where Dstandard is the standard diameter of the roller table.

[0007] Preferably, the installation adjustment step specifically includes: Coarse adjustment first: Use a dial indicator to initially position the header, with the deviation controlled within ±1 mm; Fine adjustment later: Use a micrometer to finely adjust, and the final position deviation does not exceed ±0.1 mm; Dynamic detection: Monitor the relative position of the header and the roller table in real time during the adjustment process.

[0008] Preferably, it also includes a fastening and locking step: Use a hydraulic locking device to fix the position of the header; Apply a pre-tightening torque of 30 - 50 N·m.

[0009] The beneficial effect of the present invention is that: by using the method of the present invention, each overhaul and adjustment of the header position can be completed within half an hour, reducing the labor intensity of the operators. Moreover, there are accurate data for support, making the adjustment for other operators more precise. The camber curvature of the plate after one-time quenching is reduced from the original 14% to 6%. Detailed implementation mode Embodiment

[0010] This embodiment provides a method for quickly adjusting the gap nozzle of a quenching machine, including the following steps: (1) Determine the zero reference: Use the side surface of the front bearing housing of the quenching machine as the reference zero point; (2) Lateral positioning: Measure the data of the roller table bearing housing: Use a vernier caliper to measure the installation dimensions of the roller table bearing housing on both sides and calculate the deviation value; Weld the positioning block: According to the calculation result, weld a positioning block with adjustable thickness on the end face of the bearing housing on the side with smaller deviation, and weld the block to fix the zero position; (3) Height positioning: Measure the diameter of the working roller table using an outside micrometer, with no less than 5 measurement points evenly distributed, and use a laser rangefinder to verify the measured value of the roller table diameter; Calculate the average value and ovality of the roller table diameter. When the ovality exceeds 0.05 mm, the roller table needs to be ground first; Determine the height compensation value for the header installation based on the calculation results. The formula for the height compensation value is: H = 17 + (Dactual - Dstandard) / 2, where Dstandard is the standard diameter of the roller table.

[0011] (4)Installation and adjustment: Position the right side of the header 500 ± 0.5 mm away from the bearing seat; Adjust the elevation difference between the header surface and the roller table surface to be 17 ± 0.1 mm; Use a plumb bob with an accuracy of 0.01 mm to detect the alignment of the upper and lower header lips.

[0012] The installation and adjustment steps also include: Coarse adjustment first: Use a dial indicator to initially position the header, with the deviation controlled within ±1 mm; Fine adjustment later: Use a micrometer to finely adjust, and the final position deviation does not exceed ±0.1 mm; Dynamic detection: Monitor the relative position of the header and the roller table in real time during the adjustment process; (5)Tightening and locking steps: Use a hydraulic locking device to fix the position of the header; Apply a pre-tightening torque of 30 - 50 N·m.

[0013] In addition to the above embodiments, the present invention may also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A rapid adjustment method for the slit nozzle of a quenching machine, characterized in that: It includes the following steps: (1) Determine the zero reference: Take the side of the front bearing seat of the quenching machine as the reference zero point; (2) Lateral positioning: Measure the data of the roller table bearing seat: Use a vernier caliper to measure the installation dimensions of the two-sided roller table bearing seats and calculate the deviation value; Weld the positioning block: According to the calculation result, weld a positioning block with adjustable thickness on the end face of the bearing seat on the side with smaller deviation, and weld the block to fix the zero position; (3) Height positioning: Use an outside micrometer to measure the diameter of the working roller table, and the number of measurement points is not less than 5 and evenly distributed; Calculate the average value and ovality of the roller table diameter; Determine the height compensation value for the header installation according to the calculation result.

2. A rapid adjustment method for the gap nozzle of a quenching machine according to claim 1, characterized in that: It also includes installation adjustment: Position the right side of the header at 500 ± 0.5 mm from the bearing seat; Adjust the elevation difference between the header surface and the roller table surface to be 17 ± 0.1 mm; Use a plumb bob with an accuracy of 0.01 mm to detect the centering degree of the upper and lower header lips.

3. A rapid adjustment method for the gap nozzle of a quenching machine according to claim 1, characterized in that: The height positioning step in the step (3) further includes: Use a laser rangefinder to review the measured value of the roller table diameter; When the ovality exceeds 0.05 mm, the roller table needs to be ground first; The calculation formula for the height compensation value is: H = 17 + (Dactual - Dstandard) / 2, where Dstandard is the standard diameter of the roller table.

4. A rapid adjustment method for the gap nozzle of a quenching machine according to claim 2, characterized in that: The installation adjustment step specifically includes: Coarse adjustment first: Use a dial indicator to initially position the header, and control the deviation within ±1 mm; Fine adjustment later: Use a micrometer for fine adjustment, and the final position deviation does not exceed ±0.1 mm; Dynamic detection: Monitor the relative position of the header and the roller table in real time during the adjustment process.

5. A rapid adjustment method for the gap nozzle of a quenching machine according to claim 1, characterized in that: It also includes a fastening and locking step: Use a hydraulic locking device to fix the position of the header; Apply a pre-tightening torque of 30 - 50 N·m.