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Iron oxide scale sample preparation method and detection method

A technology of iron oxide scale and alumina, which is applied in the field of steelmaking, can solve problems such as incomplete structure, poor structural hardness and mechanical strength, and structural damage, and achieve the effects of reducing shrinkage, optimizing electrical conductivity, and improving reliability

Inactive Publication Date: 2016-09-07
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a sample preparation method and detection method of iron oxide scale, which solves the technical problems of severe structural damage, incomplete structure, and poor structural hardness and mechanical strength of the scale evaluation sample structure in the prior art.

Method used

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  • Iron oxide scale sample preparation method and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 12

[0069] Cut off the hot-rolled wire rod with well-preserved iron oxide scale, the length is 80mm.

[0070] Put the obtained wire rod into a plastic water pipe with a diameter of 30mm, the length of the water pipe is not less than the length of the wire rod, and one end is sealed with a plug.

[0071] Pour the prepared solution into a plastic water pipe to submerge the wire rod, and let it stand at room temperature (0°C to 40°C) for 120min to 320min. The solution and the wire rod are tightly bonded to form a hard solid.

[0072] Remove the sealing plug at the bottom of the plastic tube, take out the cured wire rod, cut off the required metallographic sample length by wire cutting, and then grind and polish it.

[0073] See Table 1, the solution ratio and effects of Examples 1-12.

[0074] Comparative example 1-2 mosaic material ratio and effect.

[0075] Among them, comparative example 1 is traditional metallographic inlay, and comparative example 2 is cold inlay.

[0076] Ta...

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Abstract

The invention belongs to the technical field of steel making, and discloses an iron oxide scale sample preparation method. The method comprises the steps that steel attached with an iron oxide scale is cut out and immersed in a fixation solution; when the fixation solution bonds with the steel to be in a solid state, a sample for detection experiments is machined, wherein the fixation solution is prepared from bisphenol A type epoxy resin, a C20 type curing agent, diglycidyl ether and aluminum oxide, and the input of the C20 type curing agent is 10%-20% by mass of bisphenol A type epoxy resin. According to the iron oxide scale sample preparation method, a spatial organization structure of the iron oxide scale can be completely preserved, and the reliability of experimental detection is greatly improved.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a sample preparation method and detection method of iron oxide scale. Background technique [0002] During the production process of hot-rolled wire rod, scale is inevitably formed on the surface, and the downstream users first face the problem of scale removal during the use process. If the iron oxide scale is not completely removed, the hard and brittle iron oxide scale will cause surface damage, cause deep drawing broken wires, and at the same time increase the wear of the die and greatly reduce the life of the wire drawing die. [0003] Iron oxide scale is not a single component, and the mechanical descaling performance of iron oxide scale is related to its composition and thickness: the greater the thickness, the greater the Fe 3 o 4 The higher the ratio, the better the mechanical descaling performance. In order to improve wire rod quality and product competitiveness,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 张帆桂江兵任安超丁礼权张贤忠夏艳花鲁修宇陶勇邱俊
Owner 武汉钢铁有限公司
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