Abstract

The present invention relates to the technical field of magnetic particle inspection, and to a magnetic particle inspection apparatus for an annular workpiece. Both ends of a central magnetic rod respectively pass through the centers of inner holes of excitation magnetizing coils, and the both ends of the central magnetic rod respectively pass through the centers of the corresponding excitation magnetizing coils; conductive copper bus bars, insulating partition plates and conductive copper sheets are further comprised; the rear side of the left upper end of a first conductive copper bus bar and the front side of the left upper end of a second conductive copper bus bar are overlapped with each other by means of insulating partition plates, and the rear side of the right lower end of the first conductive copper bus bar and the front side of the lower right end of the second conductive copper bus bar are overlapped with each other by means of conductive copper sheets, so as to form a first "concentric-square-shaped" loop; the rear side of the right lower end of a second conductive copper bus bar of a previous "concentric-square-shaped" loop is overlapped with the front side of the right lower end of a first conductive copper bus bar of a next "concentric-square-shaped" loop by means of the insulating partition plate, and a plurality of "concentric-square-shaped" loops are sequentially connected in series end to end in the thickness direction of the coils to form a square spiral loop. The present invention has a small volume, a large current, a concentrated magnetic field, and a good magnetic particle inspection effect.

IPC Classes  ?

• G01N 27/82 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws

Abstract

A bird-shaped test block, comprising a beak structure (1), a 1/4 cylinder (2), and a first flat plate (3). The beak structure (1) and the first flat plate (3) are fixedly connected to a second surface and a third surface of the 1/4 cylinder (2), respectively, and a second arc-shaped surface is connected to a first arc-shaped surface. Accurate positioning for an ultrasonic oblique incidence defect is improved, the ultrasonic circumferential oblique incidence detection level for a curved forge is greatly improved, various series of bird-shaped test blocks having an arc radius difference of 50 mm can be matched, and accurate positioning by ultrasound flaw detection for a longitudinal defect of a hollow forge is achieved. The performance of a flaw detector and a probe calibrated by the bird-shaped test block meets the purpose of accurate calibration of the flaw detector and the probe, and ultrasonic defect positioning flaw detection for the curved forge is facilitated.

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects

Abstract

A portable wire cutting device for sampling a steel ingot includes a wire rack device, a driving system, and a multi-axis moving device. The wire rack device includes a first corner wheel, a second corner wheel, a transition wheel, a steering wheel, a first wire rack, a second wire rack, and a wire winding drum. The driving system includes a wire drum motor and a molybdenum wire, wherein the wire drum motor provides power driving for the operation of a cutting line; and the molybdenum wire is a closed molybdenum wire coil connected in an end-to-end manner, the molybdenum wire is wrapped around the first corner wheel, the second corner wheel, the wire winding drum, and an inner side of the transition wheel in a looping manner, and during operation, the cutting line performs wire cutting on an object by the molybdenum wire.

IPC Classes  ?

• B23D 57/00 - Sawing machines or sawing devices not covered by one of groups
• G01N 1/04 - Devices for withdrawing samples in the solid state, e.g. by cutting
• B23H 7/02 - Wire-cutting
• B21F 11/00 - Cutting wire

Abstract

A dudou-shaped test block includes a testing structure, a first beam-path structure, and a second beam-path structure. A first arc-shaped groove and a second arc-shaped groove are provided on one side of the testing structure. The other side of the testing structure is a flat surface. The first beam-path structure and the second beam-path structure are both flat plates. A thickness of the first beam-path structure is less than a thickness of the second beam-path structure. The first beam-path structure and the second beam-path structure are both in contact with the flat surface and arranged parallel to the flat surface. The first arc-shaped groove is arranged corresponding to the first beam-path structure, and the second arc-shaped groove is arranged corresponding to the second beam-path structure.

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects

Abstract

A dudou-shaped test block, comprising a testing structure (1), a first beam-path structure (2), and a second beam-path structure (3). A first arc-shaped indentation and a second arc-shaped indentation are provided on one side of the testing structure (1). The other side of the testing structure (1) is a flat surface, and the first beam-path structure (2) and the second beam-path structure (3) are both flat plates. The thickness of the first beam-path structure (2) is less than the thickness of the second beam path structure (3). The first beam path structure (2) and the second beam path structure (3) are both in contact with the flat surface and arranged parallel thereto. The first arc-shaped indentation is arranged corresponding to the first beam path structure (2), and the second arc-shaped indentation is arranged corresponding to the second beam path structure (2).

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects

Abstract

Provided is a portable wire cutting device for sampling a steel ingot, the device comprising a wire rack device, a driving system and a multi-axis mobile device. The wire rack device comprises a first corner wheel (1), a second corner wheel (2), a transition wheel (3), a steering wheel (4), a first rack (5), a second rack (6) and a wire storage cylinder (8). The driving system comprises a wire cylinder electric motor (7) and a molybdenum wire (9), wherein the wire cylinder motor (7) provides the driving power for the operation of a cutting line; and the molybdenum wire (9) is a closed molybdenum wire coil connected in an end-to-end manner, the molybdenum wire (9) is wrapped around inner sides of the first corner wheel (1), the second corner wheel (2), the wire storage cylinder (8) and the transition wheel (3) in a looping manner, and during operation, the cutting line performs wire cutting on an object by means of the molybdenum wire (9). The multi-axis mobile device comprises an X-axis platform (10), an X-axis electric motor (11), a Y-axis platform (12), a Y-axis electric motor (3) and a magnetic attraction disc (14), wherein the magnetic attraction disc (14) is a cylinder, with one strip-shaped permanent magnet or constant magnet being arranged therein, and the magnet inside same is controlled to rotate by a rotation handle; the bottom portion thereof is made of a soft magnetic material; and the magnetic attraction disc is fixed onto a steel ingot surface (15) by means of magnetic attraction. The device can quickly and precisely control the cutting thickness, cutting depth and cutting shape of a steel ingot during sampling, and is simple to operate and convenient to carry.

IPC Classes  ?

• B23H 7/10 - Supporting, winding or electrical connection of wire-electrode
• B23H 7/02 - Wire-cutting
• G01N 1/04 - Devices for withdrawing samples in the solid state, e.g. by cutting

Abstract

A heel test block comprises a semi-cylinder, a first flat plate and a second flat plate, wherein the side surface of the semi-cylinder comprises a circular arc-shaped surface and a first plane, the first flat plate and the second flat plate are arranged on one side of the first plane, all the parts of the first flat plate have the same thickness, all the parts of the second flat plate have the same thickness, the first flat plate and the second flat plate are arranged in parallel to the first plane, the first flat plate and the second flat plate are arranged on the two sides of the mother line of the semi-cylinder respectively, and the thickness of the first flat plate is less than that of the second flat plate.

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects

Abstract

A perpendicular column beam, having two beams (2, 4) of equal strength and a sleeve. The two beams (2, 4) of equal strength are transversely connected via the sleeve (21), the cross sections of the beams (2, 4) of equal strength are rectangular, one side of each beam is flat, and another side is provided with a protruding portion. The cross sectional areas of portions of the beams (2, 4) of equal strength located above the protruding portions gradually increase from top to bottom, the cross sectional areas of portions of the beams of equal strength located below the protruding portions gradually decrease from top to bottom, and the sleeve (21) and the axis thereof are located between the two beams (2, 4) of equal strength in the horizontal direction. The sleeve (21) may be mounted with a horizontal working cylinder borne by a cylinder bottom, and is permitted to bear a large working load in the horizontal direction, and at the same time, since the perpendicular column beam is made up of the two beams (2, 4) of equal strength, a large working load may be borne along both the axis of the beams of equal strength and the axial direction perpendicular to the beams of equal strength.

IPC Classes  ?

• B30B 15/04 - FramesGuides
• B21J 9/02 - Special design or construction
• B21J 13/04 - FramesGuides

Abstract

A combined bidirectional pre-stress bearing rack comprises a novel vertical upright beam, a horizontal upper beam (6) and a horizontal lower beam (1) with the same strength. The vertical upright beam, the horizontal upper beam and the horizontal lower beam are pre-tightened in the vertical direction and the horizontal direction through pre-stress pull rod devices (71, 72, 73) to form the combined bidirectional pre-stress bearing rack. The upper horizontal beam (6) and the lower horizontal beam (1) are provided with vertical working cylinders therein and enable the withstanding of the working loads in the vertical direction. Each vertical upright beam comprises two vertical beams (2, 4) with the same strength, and the two vertical beams are transversely connected through a horizontal sleeve to install a horizontal working cylinder borne by a cylinder bottom, and therefore enable the withstanding of the working loads in the horizontal direction. The horizontal upper beam (6), the horizontal lower beam (1) and left/right vertical uprights (2, 4) are tightly and fixedly integrated into a whole and thereby the bidirectional pre-stress bearing rack with balanced stress being perpendicular to the horizontal direction is formed. Therefore, the entire rack has a higher integral rigidity, a better anti-fatigue strength and a better reliability and can withstand huge working loads in both the vertical direction and the horizontal direction.

IPC Classes  ?

• B30B 15/04 - FramesGuides

Abstract

A multidirectional-die composite extrusion hydraulic press adopts a combined-type bidirectional pre-stress bearing rack and a combined-type double-X-type composite guide frame. The combined-type bearing rack comprises an upper horizontal beam (6), a lower horizontal beam (1) and two vertical upright beams (2; 4). A vertical working cylinder is provided in the upper horizontal beam (6) and the lower horizontal beam (1). Each equal-strength vertical upright beam (2; 4) comprises two equal-strength beams which are transversely connected through a sleeve, used for mounting a horizontal working cylinder and allowed to bear the working load in the horizontal direction. The combined-type guide frame comprises two guide bodies (51, 52). Guide sides of the guide bodies have protruding portions. First guide faces are symmetrically arranged on two sides of the upper portions of the protruding portions, second guide faces are symmetrically arranged on two sides of the lower portions of the protruding portions, and extending lines of the first guide faces and the second guide faces all pass through the center of the combined-type bearing rack. The multidirectional-die composite extrusion hydraulic press has safe and reliable bearing capacity and running accuracy, the number of control shafts of the working cylinders reaches seven, and production process has various applications.

IPC Classes  ?

• B30B 15/04 - FramesGuides
• B21C 23/21 - Presses specially adapted for extruding metal

Abstract

A combined-type double X-shaped composite guiding system, comprising two guiding bodies (51, 52) having identical sizes and structures and front/rear symmetry, and a movable beam (3). Guiding sides of the guiding bodies (51, 52) are provided with protruding portions, two sides of upper parts of the protruding portions are symmetrically provided with first guiding surfaces, and two sides of lower parts of the protruding portions are symmetrically provided with second guiding surfaces. Extension lines of the first guiding surfaces and the second guiding surfaces pass through the centre of a combined-type bidirectional pre-stress bearing frame, forming a combined-type double X-shaped composite guiding structure. Upper ends of the two guiding bodies (51, 52) are fixedly connected via a pre-stress pull rod, and lower parts of the two guiding bodies (51, 52) are fixedly connected to the movable beam (3). The guiding system is used for performing guiding on the combined-type bidirectional pre-stress bearing frame, and has a safe and reliable bearing capacity and operating accuracy.

IPC Classes  ?

• B30B 15/04 - FramesGuides

Abstract

Disclosed is a heel test block, comprising a semi-cylinder (1), a first flat plate (2), and a second flat plate (3). Side surfaces of the semi-cylinder (1) comprise a circular arc surface and a first plane, wherein the first flat plate (2) and the second flat plate (3) are provided on one side of the first plane, the thickness of various parts of the first flat plate (2) are the same and the thickness of various parts of the second flat plate (3) are the same, the first flat plate (2) and the second flat plate (3) are both provided to be parallel with the first plane, the first flat plate (2) and the second flat plate (3) are provided on two sides of the generatrix of the semi-cylinder (1), and the thickness of the first flat plate (2) is smaller than that of the second flat plate (3). The heel test block has a simple structure and is capable of calibrating angles, sound velocity and zero points of forged pieces with a circumferentially inclined curved detection surface. By utilizing the proportion of an instrument calibrated by the heel reference test block, the aim of correct calibration of the instrument is achieved, and ultrasonic defect location and flaw detection of the forged pieces with the curved surface is facilitated.

IPC Classes  ?

• G01N 29/30 - Arrangements for calibrating or comparing, e.g. with standard objects