Retractable coil magnetic particle flaw detector with compatible wheel diameter

Abstract

The invention discloses a retractable coil magnetic particle flaw detector with a compatible wheel diameter, and belongs to non-destructive magnetic inspection equipment. A programmed control system cabin, a coil movement device, an electrode clamping device, a centering device and a peripheral magnetization current source are sequentially arranged on the left side surface of a frame from top to bottom; an industrial personal computer system cabin, a coil movement device, an electrode clamping device, a centering device and a longitudinal magnetization current source are sequentially arranged on the right side surface from top to bottom; dual rows of retractable coils with compatible wheel diameters are arranged above and below a workpiece; a main spray device is arranged on the side surface of the workpiece; a roller rotation device is arranged below a pair of wheel hubs of the workpiece; a feed and discharge device is arranged on the outer side of the roller rotation device. The retractable coil magnetic particle flaw detector is arranged between two wheel hubs of a wheel shaft; dual rows of retractable coils are adopted, and the compatibility is good. A bridge self-floating device is adopted, the contact pressure between contacts can be automatically balanced, and the phenomenon of unreliable individual contacts is avoided. The magnetic particle flaw detector is good in compatibility, high in magnetization efficiency, high in flaw detection sensitivity, accurate to locate, simple in structure, and low in construction cost.

Description

technical field [0001] The invention relates to a non-destructive magnetic flaw detection equipment, in particular to a magnetic powder flaw detection machine with a wheel diameter compatible and openable coil, which is used for shaft workpieces such as train wheels and pulleys, internal combustion engine crankshafts and other special-shaped workpieces with complex shapes. non-destructive testing. Background technique [0002] Since the reform and opening up, the national economy has grown rapidly, "scientific and technological innovation, independent innovation" has become the mainstream of domestic industrial development, and my country's industry is gradually developing in the direction of intensive, energy-saving, emission-reducing, and low-carbon. At present, the magnetic particle inspection method has been widely used in various fields of industry at home and abroad. The basic principle of magnetic particle inspection is: when ferromagnetic materials are magnetized in ...

AI Technical Summary

Problems solved by technology

However, the machine has the following defects: 1. Due to the use of a rotary open-close solenoid coil, the contact pressure of the movable contact is limited, and when a large current is applied, the electrode ignition and burning and electrical corrosion will occur, resulting in unstable magnetization current , the detection sensitivity is low, the reliability is poor, and it is easy to cause missed detection and hidden safety hazards; 2. The compatibility with different wheel diameter structures is poor. If there are different structural devices between the wheel axles (such as larger gears, speed reduction box, brake disc, etc.), generally can not be fully contained; 3. For workpieces with many accessories on the wheel set, heavy mass, and large inertia, the impact resistance of the rotating supporting wheel device is poor

The technicians of scientific research units and enterprises are constantly exploring and researching, hoping to develop a magnetic particle flaw detector with good compatibility, high flaw detection sensitivity, and superior performance. Technical Difficulties Overcome

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