RU2762521C1 - Device for non-destructive testing of rolled metal - Google Patents

Abstract

FIELD: sheet and long products defects detection.

SUBSTANCE: invention is intended for detecting defects on sheet and long products. The substance of the invention lies in the fact that the device for non-destructive testing of rolled metal contains a mechanism for raising and lowering the sensor to the object of control, and a mechanism for positioning the sensor, while the mechanism for raising and lowering the sensor contains a frame on which at least two pneumatic cylinders are installed, two movable beams on which vertical guides are installed, which are inserted into ball carriages, protective casings designed to protect ball carriages with guides, protective upper and lower corrugations, and the sensor positioning mechanism has a suspension on which the sensor is mounted, and which has two axes that ensure the sensor swing in the planes of the transverse and longitudinal sections of the test object, and the device also contains at least two electronics units, each of which is mounted on a frame, at least two vertical tracks, grease fittings, channels and fittings for supplying compressed air for cooling the device and creating an air cushion between the sensor and the controlled object.

EFFECT: expanding the functionality of the device while ensuring the reliability and safety of its operation.

3 cl, 3 dwg

Description

The proposed invention relates to the field of non-destructive testing of products of the metallurgical industry, in particular rolled metal, and is intended to detect defects on sheet and long products.

At present, various devices and methods are known for carrying out non-destructive testing of rolled metal using ultrasonic transducers, piezoelectric transducers, and various sensors, but they do not provide the required positioning accuracy of the suspension of transducers, sensors, and do not ensure the reliability of the operation of these devices under conditions of operation at elevated temperatures.

So there is a device for ultrasonic testing of rolled sheets according to the RF patent for IZ No. 2298180, containing two platforms, one of which is installed with the ability to move across the controlled sheet, and the other is fixed. On the movable platform, beams with electromagnetic-acoustic transducers (EMAT) are installed, while the beams are equipped with displacement sensors and position sensors for the sheet edges. On the stationary platform, installed in front of the movable platform, in the direction of the controlled sheet movement, optical sensors are installed to detect the controlled sheet and search for its edges. In front of the stationary platform, optical sensors are installed to control the shape of the transverse edges of the tested sheet and determine the beginning and end of the ultrasonic testing zone, while the device has a lever system for raising and lowering the EMAT unit.

The disadvantage of this device is the use of a lever-type system as a positioning system of the EMAT unit for sheet metal, which does not provide the required positioning accuracy of the EMAT unit due to a change in the landing coordinate in the direction of movement of the rolled metal on sheets of various thicknesses.

It is also known a device for ultrasonic testing of round bars according to the RF patent for IZ No. 2313785, selected as a prototype.

This device contains a control system, consisting of a mechanism for feeding and pressing the substrate to the test object, and a mechanism for centering and independently pressing the ultrasonic transducer to the test object, while the mechanism for feeding and pressing the substrate to the test object contains a housing on which guides are mounted, connected by a traverse with pneumatic cylinder and equipped with trunnions for connection with the centering mechanism and independent pressing of the ultrasonic transducer to the test object, the mechanism for centering and independent pressing of the ultrasonic transducer to the test object contains a substrate, which is rigidly connected to the mechanism for feeding and pressing the substrate to the test object by means of a frame connected to the guides mechanism for feeding and pressing the substrate with the help of axes that ensure the rocking of the substrate in the planes of the transverse and longitudinal sections of the test object, a bar with an ultrasonic transducer is installed on the substrate, on which it is mounted sliding supports, for example, linear bearings to ensure its vertical movement relative to the substrate during the passage of defects protruding above the surface of the test object, linear bearing housings are rigidly fixed to the substrate, and the linear bearing rods are rigidly connected to the bar, the ultrasonic transducer is installed in the center of the bar, which pressed against the substrate.

The disadvantages of this device are its large size, due to the use in its design of two frames for swinging the ultrasonic transducer, as well as the absence of a centralized and convenient lubrication system for vertical guides, the lack of necessary electronics units, and the absence of tracks for supplying cables from the electronics units to the sensors.

The objective of the proposed invention is to create a modular design of a device for non-destructive testing of rolled metal, which would make it possible to create on its basis the formation of various rulers for monitoring rolled objects of any width, and would also ensure reliable and safe operation of the device due to the presence of electronic units, an air cooling system , protective casings and protective corrugations.

The technical result of this invention is to expand the functionality of the device while ensuring the reliability and safety of its operation.

The stated technical result is achieved due to the fact that a device for non-destructive testing of rolled metal, containing a mechanism for raising and lowering the sensor to the test object, and a mechanism for positioning the sensor, while the mechanism for raising and lowering the sensor contains a frame on which vertical guides, a pneumatic cylinder are installed, and a mechanism positioning of the sensor has two axes that ensure the rocking of the sensor in the planes of the transverse and longitudinal sections of the test object, also contains at least two electronics units, each of which is mounted on the frame, at least two vertical tracks, lubricators, channels and fittings for supplying compressed air for cooling the device, as well as creating an air cushion between the sensor and the controlled object, while the mechanism for raising and lowering the sensor to the controlled object contains at least two pneumatic cylinders, two movable beams on which vertical guides are installed, which are inserted into ball carriages, protective casings made with the possibility of protecting ball carriages with vertical guides, protective upper and lower corrugations made with the ability to compress and stretch in accordance with the position of the pneumatic cylinder rod, while each protective casing is installed between the upper and lower protective corrugations, which are attached to the upper and the lower plates of the movable beam, respectively, and the sensor positioning mechanism contains a suspension on which the sensor is installed and which has two axes that ensure the sensor swing in the planes of the transverse and longitudinal sections of the test object, while each electronics unit has a compressed air cooling system, and each vertical the path is installed between the frame and the bottom plate of the movable beam, and is made with the possibility of installing cables in it from the electronics unit to the sensor suspension, and each of the grease fittings is installed on a corresponding protective casing, connected to the corresponding oiler of the ball carriage, and is also made e with the possibility of providing centralized lubrication of vertical guides.

It is preferable that the device for non-destructive testing of rolled metal as each vertical guide contains a rail guide, which is inserted into ball carriages.

It is advisable that in a device for non-destructive testing of rolled metal, each electronics unit contains a frame in which nozzles for blowing compressed air to the electronics unit are located.

For a more complete disclosure of the invention, the following is a description of a specific possible variant of its execution, which is illustrated by the corresponding drawings.

FIG. 1 is a front view of a device for non-destructive testing of rolled metal made according to the invention.

FIG. 2 is a side view of a device for non-destructive testing of rolled metal according to the invention.

FIG. 3 is a cross-sectional view a-a in FIG. one.

The device for non-destructive testing of rolled metal, in its preferred embodiment, contains a mechanism for raising and lowering 1 the sensor to the test object, which contains a frame 2, on which four ball carriages 3 are installed on each side. The movable beams 7 with vertical guides 8 installed on them move along the ball carriages 3, each of which is brought into the corresponding ball carriages 3. In this case, the movement of each movable beam 7 is limited by the upper mounting plate 9 and the lower mounting plate 10.

The lifting-lowering mechanism 1 of the sensor to the test object also contains two pneumatic cylinders 4, two protective casings 5 made with the possibility of protecting ball carriages 3 with vertical guides 8, protective upper corrugations 12 and protective lower corrugations 13, made with the ability to compress and stretch in accordance with with the position of the rod of the pneumatic cylinder 4, with each protective casing 5 installed between the upper 12 and lower 13 protective corrugations, which are attached to the upper 9 and lower 10 plates of the movable beam 7, respectively.

The device also contains two electronics units 6, each of which is mounted on a frame 17, which has nozzles 16 for supplying compressed air for cooling the electronics units 6, two vertical tracks 11, as well as a sensor positioning mechanism 14, which contains a suspension 15 on which it is mounted a sensor, and which has two axes 18 and 19, which ensure the rocking of the sensor in the planes of the transverse and longitudinal sections of the test object.

The device provides for the placement, on the body of each protective casing, oilers 20, as well as channels 22-24, and fittings 21, 25-27 for supplying compressed air from the compressed air supply pipes 28 to create an air cushion between the sensor and the object of control.

In a preferred embodiment of the device, as each vertical guide 8, a rail guide inserted into the corresponding ball carriages 3 is used.

Electronics units 6 are designed to process signals from acoustic transducers, and are not control elements of a device for non-destructive testing of rolled metal.

The device for non-destructive testing of rolled metal operates as follows.

In the initial position, the rods of the pneumatic cylinders 4 are extended, the vertical track 11 occupies the extreme upper position, the upper protective corrugation 12 is in a stretched position, and the lower protective corrugation 13 is in a compressed position.

In the working position, when control signals are received on the pneumatic cylinders 4, their rods are retracted, and the mechanism for raising and lowering the sensor 1 to the control object moves down until the sensor suspension 15 drops onto the control object.

In this case, the upper protective corrugation 12 and the lower protective corrugation 13, as well as the vertical track 11 occupy the necessary intermediate positions.

Then, simultaneously with the lowering of the sensor suspension 15, signals are sent to blow compressed air of the electronics units 6, as well as signals for the supply of compressed air to the sensor suspension 15 to create an air cushion. In this case, compressed air from the compressed air supply pipes 28 is supplied through fitting 27 and nozzles 16, which are located within 17 electronics units 6, cooling the electronics unit 6, and compressed air, which is supplied through special channels and fittings 21-26, is supplied to suspension 15 of the sensor to create an air cushion between the sensor and the control object.

The cables are supplied from the electronics units 6 to the sensor suspension 15 through the vertical track 11.

In the device for non-destructive testing of rolled metal, it was possible to significantly expand its functionality due to the fact that this device is a complete control module, which makes it possible to form from these modules "rulers" for inspecting objects of any required width.

Also, when changing the stroke of the pneumatic cylinders 4, the stroke of the protective corrugations 12, 13, and the length of the rail guides 8, it is possible to obtain a mechanism for lifting and lowering 1 sensor to the test object with the necessary vertical stroke, which ensures the versatility of using this device for non-destructive testing of rolled metal.

The positioning of the sensor suspension 15 is carried out strictly vertically due to the vertical arrangement of ball carriages 3, along which the movable beam 7 with rail guides 8 moves, which guarantees the same coordinate of the landing site, no matter at what height it occurs, which provides a significant increase in positioning accuracy.

Removing the protective casing 5 of the grease nipples 20 onto the housing provides convenient lubrication, in particular, of the ball runner blocks 3.

The use of ball carriages 3, as well as rail guides 8 for vertical movement does not require constant adjustment, which significantly increases the reliability of the device.

And the use of protective corrugations 12 and 13 in the device provides full protection of the rail guides 8 and ball carriages 3 from dirt and dust, which also significantly increases the reliability of the device.

In addition, the use of a compressed air blowing system of electronic units 6 in the device protects the device from the possibility of overheating, which is especially important when operating this device at high temperatures.

As will be apparent to those skilled in the art, the invention can be easily developed in other specific forms without departing from the spirit of the invention.

However, the present embodiments are to be considered merely illustrative and not limiting, with the scope of the invention represented by its claims, and is intended to include all possible modifications and scope of equivalence to the claims of the present invention.

Claims (3)

1. A device for non-destructive testing of rolled metal, containing a mechanism for raising and lowering the sensor to the test object, and a mechanism for positioning the sensor, while the mechanism for raising and lowering the sensor contains a frame on which vertical guides are installed, a pneumatic cylinder, and the sensor positioning mechanism has two axes that provide rocking of the sensor in the planes of the cross and longitudinal sections of the test object, characterized in that it contains at least two electronics units, each of which is installed on the frame, at least two vertical tracks, lubricators, channels and fittings for supplying compressed air for cooling the device, as well as creating an air cushion between the sensor and the controlled object, while the mechanism for raising and lowering the sensor to the controlled object contains at least two pneumatic cylinders, two movable beams on which vertical guides are installed, which are inserted into ball carriages, protective casings made with the possibility yu protection of ball carriages with vertical guides, protective upper and lower corrugations made with the ability to compress and stretch in accordance with the position of the pneumatic cylinder rod, while each protective casing is installed between the upper and lower protective corrugations, which are attached to the upper and lower plates of the movable beam, respectively , and the sensor positioning mechanism contains a suspension on which the sensor is installed, and which has two axes that provide the sensor swinging in the planes of the transverse and longitudinal sections of the test object, while each electronics unit has a compressed air cooling system, and each vertical path is installed between the frame and the bottom plate of the movable beam and is made with the possibility of installing cables from the electronics unit to the sensor suspension, and each of the grease nipples is mounted on a corresponding protective casing, connected to the corresponding oiler of the ball carriage and is also configured to provide centrally th lubrication of the vertical guides. 2. A device for non-destructive testing of rolled metal according to claim 1, characterized in that each vertical guide comprises a rail guide, which is inserted into ball carriages. 3. A device for non-destructive testing of rolled metal according to claim 1, characterized in that each electronic unit contains a frame in which nozzles for blowing with compressed air are located.

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