Method for detecting content of calcium in seamless calcium line

A technology of seamless calcium wire and detection method, which is applied in the field of chemical analysis, can solve the problem of inaccurate detection of calcium, and achieve the effects of reducing human and environmental hazards, easy operation, and less chemical reagents

Inactive Publication Date: 2018-10-16
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for detecting the calcium content in the seamless calcium wire, and solve the technical problem that the calcium in the existing seamless calcium wire and the calcium in the calcium core of the seamless calcium wire cannot be accurately detected. The metal calcium core in the seam calcium wire is quickly separated from the seamless steel pipe, realizing the high-precision and low-cost detection of calcium in the seamless calcium wire, and meeting the product inspection requirements

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  • Method for detecting content of calcium in seamless calcium line

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[0015] The following specific examples are used to further illustrate the present invention. It should be understood that the following specific examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0016] A method for detecting calcium content in a seamless calcium wire, comprising the following steps:

[0017] 1) Prepare the sample. On the non-polluting and rust-free seamless calcium wire coil to be tested, cut 8 samples with a length of 10mm, discard 2 samples at the end, and seal the 6 samples in the middle After sealing, it is used for detection;

[0018] 2) Separate the calcium core in the sample and prepare the solution to be tested, weigh the quantitative sample and place it in a beaker, add 80 mL of distilled water at 70°C to the beaker to soak the sample for 25 minutes, and add the volume ratio It is a 1:1 hydrochloric acid solution, and the hydrochloric acid solution has a bulk density of 1.19...

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Abstract

The invention relates to a method for detecting the content of calcium in a seamless calcium line. A technical problem that calcium in the seamless calcium line and calcium in the calcium core of theseamless calcium line cannot be accurately detected is solved. The method for detecting the content of calcium in the seamless calcium line comprises the following steps: 1) preparing a sample; 2) separating the calcium core from the sample, and preparing a solution to be detected; 3) titrating calcium ions in the solution to be detected; and 4) calculating the content of calcium in the seamless calcium line to be detected. The method is suitable for metal calcium wires wrapped with metal steel pipes and iron sheets, meets the detection requirements of metal calcium and seamless steel tube wall integrated seamless calcium lines, and has the advantages of simplicity in operation, short detection time only being 1.5-2.5 h, low detection cost, high detection precision, small chemical reagentamount, greenness and environmental protection.

Description

technical field [0001] The invention relates to a method for detecting calcium cored wire, in particular to a method for detecting calcium content in seamless calcium wire, and belongs to the technical field of chemical analysis. Background technique [0002] With the continuous improvement of users' requirements for steel quality, the content of inclusions in steel must be less and less, and the particle size must be smaller and smaller. This requires that the deoxidized products of molten steel must float up in time during the refining process of the ladle. In the prior art, iron and steel enterprises usually adopt a process method of feeding calcium cored wire during the refining process of molten steel in steelmaking, so as to achieve a good deoxidation effect on molten steel. [0003] With the continuous improvement of the requirements for the cleanliness of molten steel, the corresponding requirements for the steelmaking process and raw and auxiliary materials for stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16G01N1/28G01N1/34G01N1/44
CPCG01N1/286G01N1/34G01N1/44G01N31/16
Inventor 何志明薛莹于培芳王海军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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