Dendrite corrosion low-power checkout integration method

A low-magnification inspection and surface inspection technology, which is applied to measuring devices, material analysis through optical means, instruments, etc., can solve problems that are difficult to achieve, and achieve the best matching, reasonable arrangement, and time-saving effects

Inactive Publication Date: 2011-05-25
INST OF METALLURGICAL TECH DONGBEI UNIV SHENYANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low-magnification inspection method of dendrite corrosion is extremely effective in judging the metallurgical effects of electromagnetic stirring, electric pulse inoculation treatment, light reduction and compression casting, and can observe the degree of improvement in central segregation and dendrite breakage, etc. difficult to realize

Method used

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  • Dendrite corrosion low-power checkout integration method
  • Dendrite corrosion low-power checkout integration method
  • Dendrite corrosion low-power checkout integration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The steps of the integrated method for low power inspection of dendritic corrosion are as follows.

[0052] 1. Sample processing

[0053] First, place the test surface of the tested sample facing up, clamp it on the milling, grinding, and polishing combined machine tool, and use a milling head to mill the test surface of the sample; secondly, use a grinding head to polish the test surface, and the roughness requirement reaches Ra ≤0.8μm; then the inspection surface is polished with a polishing head, and the roughness is required to reach Ra≤0.1μm, that is, the mirror finish is achieved.

[0054] A milling head, a grinding head and a polishing head are sequentially arranged above the sample inspection surface of the milling, grinding and polishing combined machine tool.

[0055] 2. Sample corrosion

[0056] Loosen the clamping screws of the sample on the milling, grinding, and polishing machine tool, use a magnetic hoist to hoist the sample onto the sample transport trolley, push...

Embodiment 2

[0069] The steps of the integrated method for low power inspection of dendritic corrosion are as follows.

[0070] 1. Sample processing

[0071] First, place the test surface of the tested sample facing up, clamp it on the milling, grinding, and polishing combined machine tool, and use a milling head to mill the test surface of the sample; secondly, use a grinding head to polish the test surface, and the roughness requirement reaches Ra ≤0.8μm; then the inspection surface is polished with a polishing head, and the roughness is required to reach Ra≤0.1μm, that is, mirror finish.

[0072] A milling head, a grinding head and a polishing head are sequentially arranged above the sample inspection surface of the milling, grinding and polishing combined machine tool.

[0073] 2. Sample corrosion

[0074] Loosen the clamping screws of the sample on the milling, grinding, and polishing machine tool, use a magnetic hoist to hoist the sample onto the sample transport trolley, push the trolley int...

Embodiment 3

[0087] The steps of the integrated method for low power inspection of dendritic corrosion are as follows.

[0088] 1. Sample processing

[0089] First, place the test surface of the tested sample facing up, clamp it on the milling, grinding, and polishing combined machine tool, and use a milling head to mill the test surface of the sample; secondly, use a grinding head to polish the test surface, and the roughness requirement reaches Ra ≤0.8μm; then the inspection surface is polished with a polishing head, and the roughness is required to reach Ra≤0.1μm, that is, mirror finish.

[0090] A milling head, a grinding head and a polishing head are sequentially arranged above the sample inspection surface of the milling, grinding and polishing combined machine tool.

[0091] 2. Sample corrosion

[0092] Loosen the clamping screws of the sample on the milling, grinding, and polishing machine tool, use a magnetic hoist to hoist the sample onto the sample transport trolley, push the trolley int...

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Abstract

The invention relates to a dendrite corrosion low-power checkout integration method. The method comprises the following steps of: firstly, milling, grinding, polishing a sample so that the checkout surface reaches the mirror smoothness; then, corroding the sample and eroding a corrosion reagent on the checkout surface for 1-2 min; washing, wiping and drying; and scanning and shooting by adopting a low-power detection suspension scanner camera device after the checkout surface is corroded, and then, processing and printing the image. The method provided by the invention can realize dressing detection and solve the defect existing in the suspension sample by adopting the low-power detection suspension scanner camera device. The invention can detect the cast-state structure of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel or alloy steel, steel blanks and large-size steel samples, observe the solidification structure and the defects thereof as well as the evolution conditions of the solidification structure and the defects of a thermally processed sheet and also check the relation between the solidification structure and the defects and has the advantages of accuracy, easy operability, environmental protection, and the like.

Description

technical field [0001] The invention belongs to the technical field of continuous casting of iron and steel, relates to a low-magnification detection technology of dendrite corrosion, in particular to an integrated method for low-magnification detection of dendrite corrosion. Background technique [0002] Among the low-magnification inspection methods for the solidification structure and internal defects of continuous casting slabs, the main disadvantage of sulfur print inspection is that when the sulfur content is less than 0.005%, the effect of the sulfur print inspection sheet is very poor, and it is often a "white sheet". Sulfur print inspection can only show the segregation of sulfur element, but cannot show the segregation of carbon, manganese and alloy elements. It is even more helpless to show the dendritic solidification structure of the continuous casting slab. Sometimes only the rudiment of the columnar crystal can be observed, and the details of the dendrite soli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N1/32
Inventor 许庆太陶立群孙中强李吉东冯新
Owner INST OF METALLURGICAL TECH DONGBEI UNIV SHENYANG
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