CN111307036A

CN111307036A - Method for detecting size of thermal-state large ring piece

Info

Publication number: CN111307036A
Application number: CN202010168189.0A
Authority: CN
Inventors: 郭盛琦; 任秀凤; 郑永强; 赵方娜; 刘晋; 张锡武
Original assignee: Elite Energy Equipment Co ltd
Current assignee: Elite Energy Equipment Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-06-19

Abstract

The invention belongs to the technical field of manufacturing of forged rings, and particularly relates to a method for detecting the size of a hot large ring. The detection method comprises the following steps: placing a positioning detector on a hot ring after rolling, then placing an outer diameter baffle on the opposite side of a laser, and reading data of the laser to obtain a dimension I; and then, rotating the positioning detector, detecting again, reading the data of the laser to obtain a dimension II, rotating again to obtain a dimension III, comparing 3 groups of data, and comparing the maximum and minimum points of the data with the process requirement to obtain the forming state of the ring after rolling. The invention innovatively solves the problem of detecting the size of the hot large ring piece, can accurately know the hot size after rolling, is applied to mass production of the extra-large ring piece, and lays a solid foundation for timely determining the next scheme.

Description

Method for detecting size of thermal-state large ring piece

Technical Field

The invention belongs to the technical field of manufacturing of forged rings, and particularly relates to a method for detecting the size of a hot large ring.

Background

For large rings, especially for integral rings with a diameter of 16 m, after rolling, the ring size needs to be measured in a hot state in order to determine the subsequent process. After rolling is finished, the temperature of the ring piece is about 800 ℃, and the traditional cold measuring tools such as a measuring tape cannot be used. . Therefore, the size of the ring is generally marked on the steel pipe in advance, then the steel pipe is placed on the hot ring, and the size of the ring is judged by comparing the ring with the marked position on the steel pipe.

For the ring piece with the length of more than 10 meters, the length of the steel pipe which needs to be manufactured by adopting a conventional measuring method is too long. For example, when a ring with the length of 10 meters is measured, in order to ensure the safety of workers, a steel pipe with the length of more than 15 meters needs to be manufactured in a conventional measuring mode, and the steel pipe is heavy, cannot be moved manually and is not suitable for rapid carrying and size detection.

Meanwhile, the conventional measuring tool is easy to interfere with equipment due to large size, so that the size of the large ring piece can not be measured rapidly at multiple positions;

in addition, under the influence of gravity, the steel pipe can droop, the length error of 10 meters reaches more than 30mm, the accuracy is extremely poor, and the larger the ring piece, the larger the error is. At present, I have rolled rings of 16 meters successfully. Once, the technician makes the process according to wrong data, which results in the rejection of the ring piece and huge loss. Therefore, the conventional measurement method is not suitable for large rings of more than 10 meters. At present, no relevant detection method exists in foreign countries.

Therefore, the invention needs to invent a method for detecting the size of the large ring piece, which can quickly and accurately detect the outer diameter size of the ring piece at 800 ℃ and above, so that the measurement precision is within 1mm during actual measurement, and the process requirements are met.

Disclosure of Invention

In order to solve the technical problems, the invention provides a method for detecting the size of a hot large ring piece, namely, the method can quickly and accurately detect the size of the outer diameter of the ring piece at 800 ℃ or above by using a common normal-temperature laser range finder for decoration, using a specially designed positioning detector and an outer diameter baffle plate and through cross detection. And through actual measurement, the measurement precision is within 1mm, and the process requirements are completely met.

The invention realizes the above purpose by the following technical scheme:

the invention provides a method for detecting the size of a hot large ring piece, which comprises the following steps:

and (3) placing a positioning detector on the hot ring after rolling, placing an outer diameter baffle on the opposite side of the laser, reading data of the laser to obtain a dimension I, then rotating the positioning detector, detecting again, reading data of the laser to obtain a dimension II, rotating again to obtain a dimension III, comparing 3 groups of data, and comparing the maximum and minimum points of the data with the technological requirements to obtain the forming state of the ring after rolling. For example, the ovality value of the ring piece, the polygonal degree of the ring piece and the like can determine whether the outer diameter of the ring piece meets the process requirements or not and whether the rolling needs to be continued or not through the accurate data.

The structure of the positioning detector comprises a balancing weight positioning block positioned on a flange, a positioning shaft with a rotary sleeve is arranged on one side of the balancing weight positioning block, a fixed box movable rotating shaft is arranged above the positioning shaft with the rotary sleeve, a laser fixed box is arranged on one side of the fixed box movable rotating shaft, and a laser is arranged in the laser fixed box; the lower part of the laser is provided with heat insulation asbestos; the fixed box, the laser, the heat insulation asbestos and the counterweight positioning block are positioned on the same side.

The other side of the movable rotating shaft of the fixed box is provided with a handle.

Preferably, the assembly method of the positioning detector is as follows:

fixedly connecting a laser fixing box, a fixing box movable rotating shaft, a rotating handle and heat-insulating asbestos, fixedly connecting a positioning shaft with a rotating sleeve, a balancing weight positioning block and a balancing weight positioning block, and assembling the components together; meanwhile, the laser is placed in the laser fixing box and fixed well, and after the laser is assembled, the laser rotates by rotating the rotating handle by taking the positioning shaft with the rotating sleeve as an axis.

The method has the advantages that the method innovatively solves the problem of detecting the size of the hot large ring piece, can accurately know the hot size after rolling, is widely applied to production of the extra-large ring piece, and lays a solid foundation for timely determining the next scheme.

Drawings

FIG. 1 is an arc plate with an outer diameter baffle welded by a steel plate;

FIG. 2 is a top view of an arc-shaped plate welded by a steel plate for an outer diameter baffle plate;

FIG. 3 is a front view of the positioning detector;

FIG. 4 is a top view of the positioning detector;

FIG. 5 is a block diagram of the positioning detector at a first position;

FIG. 6 is a block diagram of the positioning detector at a second position;

FIG. 7 is a block diagram of the positioning detector in a third position;

1-a laser fixing box, 2-a fixing box movable rotating shaft, 3-a rotating handle, 4-a laser, 5-heat insulation asbestos, 6-a positioning shaft with a rotating sleeve, 7-a balancing weight positioning, 8-a positioning detector, 9-a ring piece and 10-an outer diameter baffle.

Detailed Description

The present invention will be further described with reference to specific examples so that those skilled in the art may better understand the present invention, but the present invention is not limited thereto.

According to the invention, the common normal-temperature laser range finder for decoration is utilized, and the ring outer diameter size of 800 ℃ or above can be rapidly and accurately detected through cross detection by utilizing the specially designed positioning detector and the outer diameter baffle. Through actual measurement, the measurement precision is within 1mm, and the process requirements are completely met.

Example 1

A method for detecting the size of a hot large ring piece comprises the following steps:

placing a positioning detector 8 on a hot ring 9 after rolling is finished, then placing an outer diameter baffle 10 on the opposite side of the laser 4, and reading data of the laser 4 to obtain a dimension I; and then, rotating the positioning detector 8 for detecting again, reading the data of the laser 4 to obtain a dimension II, rotating again to obtain a dimension III, and comparing the maximum minimum point of the data with the process requirement through the comparison among 3 groups of data so as to obtain the forming state of the ring after the rolling is finished.

The structure of the positioning detector comprises a balancing weight positioning block 7 positioned on a flange, a positioning shaft 6 with a rotary sleeve is arranged on one side of the balancing weight positioning block 7, a fixed box movable rotating shaft 2 is arranged above the positioning shaft 6 with the rotary sleeve, a laser fixing box 1 is arranged on one side of the fixed box movable rotating shaft 2, and a laser 4 is arranged in the laser fixing box 1; the lower part of the laser 4 is provided with heat insulation asbestos 5; the fixed box 1, the laser 4, the heat insulation asbestos 5 and the counterweight block 7 are positioned on the same side.

The other side of the fixed box movable rotating shaft 2 is provided with a handle 3.

The assembly method of the positioning detector 8 is as follows:

fixedly connecting a laser fixing box 1, a fixing box movable rotating shaft 2, a rotating handle 3 and heat-insulating asbestos 5, fixedly connecting a positioning shaft 6 with a rotating sleeve, a balancing weight positioning block and a balancing weight positioning block 7, and then assembling together; meanwhile, the laser 4 is placed in the laser fixing box 1 and fixed, and after the laser is assembled, the laser 4 rotates by taking the positioning shaft 6 with the rotary sleeve as an axis through rotating the rotating handle 3.

Example 2

The inventor utilizes a large ring piece (10-meter ring piece, the tolerance is 0-0.1 mm) obtained by the unit finish machining of the applicant to carry out an actual test, and the error between the data measured by the method and the actual ring piece size is within 1 mm. Meanwhile, in the application of the actual thermal ring, the ring rolling process is accurately adjusted by the process personnel according to the data measured by the method, and the product is successfully rolled. Multiple practices prove that the method is accurate and reliable and is applied to actual production.

Claims

1. A method for detecting the size of a hot large ring piece comprises the following steps:

placing a positioning detector (8) on a hot ring (9) after rolling is finished, then placing an outer diameter baffle (10) on the opposite side of a laser (4), and reading data of the laser (4) to obtain a dimension I; and then, rotating the positioning detector (8), detecting again, reading the data of the laser (4) to obtain a dimension II, rotating again to obtain a dimension III, and comparing the maximum minimum point of the data with the process requirement through the comparison among 3 groups of data so as to obtain the forming state of the ring after the rolling is finished.

2. The method for detecting the size of the large hot ring according to claim 1, wherein the structure of the positioning detector comprises a counterweight positioning block (7) located on the flange, a positioning shaft (6) with a rotating sleeve is arranged on one side of the counterweight positioning block (7), a fixed box movable rotating shaft (2) is arranged above the positioning shaft (6) with the rotating sleeve, a laser fixing box (1) is arranged on one side of the fixed box movable rotating shaft (2), and a laser (4) is arranged in the laser fixing box (1); the lower part of the laser (4) is provided with heat insulation asbestos (5); the fixed box (1), the laser (4), the heat insulation asbestos (5) and the balancing weight positioning block (7) are positioned on the same side.

3. The method for detecting the size of the hot large ring member as claimed in claim 1, wherein a handle (3) is arranged on the other side of the movable rotating shaft (2) of the fixed box.

4. The method for detecting the size of the hot large ring according to claim 1, wherein the assembly method of the positioning detector (8) is as follows:

fixedly connecting a laser fixing box (1), a fixing box movable rotating shaft (2), a rotating handle (3) and heat-insulating asbestos (5), fixedly connecting a positioning shaft (6) with a rotating sleeve, a balancing weight positioning block and a balancing weight positioning block (7), and assembling the components together; meanwhile, the laser (4) is placed in the laser fixing box (1) and fixed, and after the laser is assembled, the laser (4) rotates by taking the positioning shaft (6) with the rotary sleeve as an axis through rotating the rotating handle (3).