Common test categories of the hottest cast product

2022-08-22
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Common testing categories of cast products

the internal quality of cast product quality mainly includes: chemical composition, metallographic structure, metallurgical defects, physical and mechanical properties, reliability, grain size (number of eutectic clusters), eutectic saturation, density, purity, continuity, etc

these internal qualities will affect the service quality, mainly including: cutting performance, welding performance, operating performance, electric wear resistance, corrosion resistance, temperature resistance, working life and other working conditions of valve solenoid iron, and its indicators are also constantly improving

1. Direct reading spectrum analyzer for the composition detection of molten iron in front of the furnace: analyze and study the harmful trace elements - especially the gas elements n, 0, H

2. The quality of casting raw materials, so they help to achieve efficient battery thermal management measurement points, angles and changes, and the data listing and detection of torques corresponding to other different angles

"X-ray fluorescence spectrometer" can complete various ferroalloys as spheroidizing agents and inoculants within 5 minutes Full analysis of raw materials such as desulfurizer, slag, refractories and minerals

the portable "alloy analyzer" can complete the detection of various black and non-ferrous alloy raw materials within 5 minutes in the material warehouse and workshop site

3. Metallographic structure and mechanical property test

automatic and intelligent metallographic structure by metallographic analyzer: quantitative and qualitative analysis

adopt "universal material testing machine" and "electronic tensile testing machine" to conduct intelligent analysis of mechanical properties

4. Non destructive testing of castings

common equipment include: magnetic particle testing, radiographic testing, ultrasonic testing or spheroidization rate testing, hardness and matrix testing, wall thickness testing Water (gas) pressure test, etc., including "automatic detection" and "automatic sorting" Complete set of equipment

due to the influence of factors such as poor surface finish, loose material, coarse grain and the existence of graphite in the cast iron blank, attention must be paid to the selection of flaw detection methods, the selection of instruments, the matching of equipment, the operation technology and the experience of personnel

5. Casting surface quality inspection

the inspection of casting surface defects generally depends on visual observation, including the use of less than ten times magnifying glass method, the use of modern industrial endoscope method, etc. In order to improve the resolution, fluorescent flaw detection, dye detection, magnetic particle flaw detection and other methods can also be used to find defects on or near the surface

7. Furnace gas analysis and detection

generally: gas chromatograph, infrared gas analyzer, etc. In particular, the gas chromatograph can not only analyze the furnace gas, but also analyze the contents of N, O and h in cast iron

8. Furnace front thermal analysis method

"thermal analysis method" can not only quickly predict the spheroidization rate, but also simultaneously detect the content of C and Si and the inoculation effect, matrix structure and mechanical properties of cast iron. However, due to the influence of many factors such as the accuracy of thermocouple materials in China, the thermal analysis method is not very satisfactory in terms of test accuracy

the internal quality of casting product quality mainly includes: chemical composition, metallographic structure, metallurgical defects, physical and mechanical properties, reliability, grain size (number of eutectic clusters), eutectic saturation, density, purity, continuity, etc. These internal qualities will affect the service quality, mainly including: cutting performance, welding performance, running performance, wear resistance, corrosion resistance, temperature resistance, working life and other working conditions, and its indicators are also constantly improving

1. Direct reading spectrum analyzer for the composition detection of molten iron in front of the furnace: analyze and study the harmful trace element groups, especially the gas elements n, 0, H2, and the casting error is generally negative. The raw material quality detection "X-ray fluorescence spectrometer" can complete the full analysis of various ferroalloys, desulfurizers, slag, refractories, minerals and other raw materials as spheroidizing agents and inoculants within 5 minutes. The portable "alloy analyzer" can complete the testing problems of various black and non-ferrous alloy raw materials within 5 minutes in the material warehouse and workshop site. 3. The metallographic structure and mechanical properties are tested automatically and intelligently by the metallographic analyzer: quantitative and qualitative analysis; Adopt "universal material testing machine" and "electronic tensile testing machine" to conduct intelligent analysis of mechanical properties; 4. Common equipment for nondestructive testing of castings include: magnetic particle testing, radiographic testing, ultrasonic testing or spheroidization rate testing, hardness and matrix testing, wall thickness testing Water (gas) pressure test, etc., including "automatic detection" and "automatic sorting" Complete set of equipment. Due to the influence of factors such as poor surface finish, loose material, coarse grain size and the existence of graphite in the cast iron blank, attention must be paid to the selection of flaw detection methods, the selection of instruments, the matching of equipment, the operation technology and the experience of personnel. 5. Surface quality inspection of castings the inspection of surface defects of castings generally depends on visual observation, including the use of less than ten times magnifying glass method, the use of modern industrial endoscope method, etc. In order to improve the resolution, fluorescent flaw detection, dye detection, magnetic particle flaw detection and other methods can also be used to find defects on or near the surface. 7. Furnace gas analysis and detection generally adopts: gas chromatograph, infrared gas analyzer, etc. In particular, the gas chromatograph can not only analyze the furnace gas, but also analyze the contents of N, O and h in cast iron. 8. The "thermal analysis method" can not only predict the spheroidization rate quickly, but also detect the content of C and Si, the inoculation effect, matrix structure and mechanical properties of cast iron at the same time. However, due to the influence of many factors such as the accuracy of thermocouple materials in China, the thermal analysis method is not very satisfactory in terms of test accuracy

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