The portable magnetic particle flaw detector doubles the effect in the right working environment

Portable magnetic particle flaw detection machine is in the right environment when it is used, and its use effect will be greatly improved, so what is the use environment for the flaw detection machine? Here is to follow the Su magnetic flaw detection machine manufacturers to have a look:

1, the temperature is suitable, too cold or too hot are not suitable for the work of magnetic particle flaw detection machine, the ambient temperature given by the manufacturer is 0°C ~ 40°C;

2, the working environment of the magnetic particle flaw detection machine also has certain requirements for humidity, after all, if the humidity is too large, the machine itself has certain damage;

3, the power source of the magnetic particle flaw detection machine is electricity, so the voltage stability of the power supply is very important, voltage fluctuations may cause the magnetic particle flaw detection machine detection results appear different;

4. There can be no corrosive gases, no flammable substances and a large amount of dust or dust in the working environment of the magnetic particle flaw detection machine, which are all factors affecting the effect of the magnetic particle flaw detection machine;

5, of course, the most important thing is to ensure that there is no magnetic field interference around.

Only when the safety of the environment is determined, can the magnetic particle flaw detection machine play a greater effect.

The thing about magnetic particles in the flaw detection machine:

1. In the detection of the flaw detection machine, according to the material and surface condition of the tested specimen, the magnetic powder should have appropriate magnetism, particle size, laxity and color;

2, the particle size of the magnetic powder can be used to determine its directional diameter with a microscope using the relevant measurement methods specified in the flaw detection machine;

3. When the water used in the wet method of the flaw detection machine is used as the carrier liquid, appropriate relaxants, antifoamers, anti-rust agents and surfactants should be included;

When the oil is used as the carrier fluid, it is necessary to use odorless fire oil or transformer oil with a flash point of not less than 94 ° C, and the viscosity of the movement has a certain planning.

The operator of the portable magnetic particle inspection machine needs to be strict

No matter what kind of work scene is inevitably people-oriented, people's safety is always the first place in the safety of production, even in some seemingly very safe posts also need to pay attention to a lot of safety matters.

Portable magnetic particle flaw detection machine has a series of safety protection requirements in its working process, and the requirements for the staff operating the machine are also very high. There are generally three kinds of protection principles for magnetic particle flaw detection with X-ray or X-ray irradiation, namely shielding protection, distance protection, and time protection.

Operating magnetic particle flaw detection machine itself is also a professional technology, due to the professional knowledge of the flaw detection personnel, practical experience, responsibility and other reasons, may make the inspection quality can not meet the inspection requirements.

Therefore, the safety supervision department to carry out the necessary supervision of non-destructive testing, to ensure the quality of inspection requirements and operator safety will be very important.

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So what are the specific requirements? Take a look:

1, should have the necessary professional knowledge, including the simple principle of magnetic particle flaw detection machine, magnetic particle flaw detection and shortcomings, what defects can be found, the scope of application of magnetic particle flaw detection machine, commonly used magnetic particle flaw detection machine types and performance, the main factors affecting the sensitivity of magnetic particle flaw detection machine.

2, should have the necessary practical skills, including the identification of X-ray film exposure conditions are normal, film blackness and sensitivity to meet the requirements, the difference between the true and false defects of the film, the identification of the nature of the defect on the film, the evaluation of the film grade, understand the magnetic particle flaw detection machine process and the whole process.

The practical skills to master the observation and evaluation of negatives should be stronger than the general flaw detection personnel, otherwise it will not be able to monitor.

Workpiece crack common judgment scheme:

(1) The magnetic particle diagram is the first information to analyze the crack defects, and its characteristics are: the shape and distribution of the magnetic particle diagram are generally the description of the shape and distribution of the crack; The magnetic particle pattern is affected by the width, depth, shape and magnetic permeability of crack.

② It is necessary to understand the process of the parts before magnetic particle detection, because the cracks have sources and rules to follow.

(3) The shape and distribution characteristics of the cracks found in the general magnetic inspection are determined by the maximum normal stress of the parts and the internal situation of the parts during the process, so the formation, shape, size and distribution of the cracks are the result of the superimposed of these two factors.

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