주철 부품의 자분 탐상 기술 탐구: 그만큼 “불의 눈과 황금의 눈” 품질을 보호하는

In the field of mechanical manufacturing, cast iron parts are widely used in various mechanical equipment due to their good castability, shock absorption and wear resistance. 하지만, cast iron parts may produce defects such as cracks, pores, slag inclusions, 등., during the production process. These defects are like “광산” hidden in the dark, which may cause equipment failures at any time or even cause safety accidents. And magnetic particle flaw detection technology is the “불의 눈과 황금의 눈” that discover these defects.

The principle of magnetic particle flaw detection is actually not complicated. It is based on the magnetic properties of ferromagnetic materials. When the cast iron parts are magnetized, if there are defects on the surface or near the surface of the cast iron parts, the magnetic resistance at the defects will increase, the magnetic lines of force will be distorted, and some magnetic lines of force will leak out of the surface of the cast iron parts, forming a leakage magnetic field. 이때, sprinkle magnetic powder on the surface of the cast iron parts; the magnetic powder will be adsorbed by the leakage magnetic field, forming obvious magnetic marks at the defects, thereby intuitively presenting the defects.

The process of magnetic particle inspection generally includes pretreatment, magnetization, application of magnetic powder, observation and recording, and post-processing. In the pretreatment stage, the surface of the cast iron parts should be cleaned and rust-free to ensure that there are no interference factors, such as oil, rust, 등., on the surface, so as to prepare for subsequent flaw detection. Magnetization is a key link. The cast iron parts are usually magnetized by alternating current, direct current or permanent magnets to generate a magnetic field inside the cast iron parts. 그후, magnetic powder is evenly sprinkled on the surface of the cast iron parts. The magnetic powder can be dry powder or suspended in a liquid to form a magnetic suspension. If there are defects in the cast iron parts, the magnetic powder will gather at the defects to form clear magnetic marks. By observing the shape, size and position of the magnetic marks, the operator can accurately judge the nature and severity of the defects. 마지막으로, post-processing such as demagnetization and cleaning is carried out to avoid the residual magnetism from affecting the subsequent use of the cast iron parts.

Magnetic particle inspection technology has many advantages. It is relatively simple to operate, does not require complex equipment and expensive costs, and can quickly and effectively detect tiny defects on the surface and near the surface of cast iron parts. 게다가, magnetic particle inspection can directly display defects, and even inexperienced operators can easily identify defects. 하지만, this technology also has certain limitations. It can only detect ferromagnetic materials, but not non-ferromagnetic materials.

In the production and maintenance of cast iron parts such as rail car accessories and machine tool beds, magnetic particle inspection technology plays a vital role. By regularly performing magnetic particle inspection on cast iron parts, potential quality problems can be discovered and dealt with in a timely manner, equipment failures and production accidents caused by defects in cast iron parts can be avoided, and the stable operation of mechanical equipment can be ensured. With the continuous advancement of science and technology, magnetic particle inspection technology is also constantly innovating and improving, providing more reliable technical support for the quality inspection of cast iron parts and safeguarding the safe development of the machinery manufacturing industry.

공급자

뤄양포뇨중공업(Luoyang Fonyo Heavy Industries), 주식회사,1998년에 설립된 캐스트 철도 부품 제조업체입니다. 저희 공장 부지는 72,600㎡입니다., 이상으로 300 직원, 32 기술자, 포함 5 수석 엔지니어, 11 보조 엔지니어, 그리고 16 기술자. 우리의 생산 능력은 30,000 연간 톤. 현재, 우리는 주로 주조물을 생산하고 있습니다, 가공, 기관차 조립 및 조립,철도 차량,고속 열차, 광산 장비,풍력,etc.Our 제품은 러시아에 수출되었습니다, 미국, 독일, 아르헨티나, 일본, 프랑스, 남아프리카,이탈리아 및 기타 국가.
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