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Method of measuring phosphorus content in nitrogen-manganese alloy

A nitrogen-manganese alloy, phosphorus content technology, applied in the field of instrument analysis, can solve the problem of no detection method for phosphorus content, and achieve the effects of reducing labor expenditure, good benefit prospects and simple methods

Inactive Publication Date: 2017-05-31
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is no detection method for the phosphorus content when the chromium content in the nitrogen-manganese alloy is high

Method used

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  • Method of measuring phosphorus content in nitrogen-manganese alloy
  • Method of measuring phosphorus content in nitrogen-manganese alloy
  • Method of measuring phosphorus content in nitrogen-manganese alloy

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Experimental program
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Embodiment 1

[0044] Plasma emission spectrometer ICP-AES: produced by PE Company in the United States, OPTIMA5300DV two-way observation type full-spectrum direct-reading plasma spectrometer, solid-state detector (CCD), wavelength range 190-780nm, echelle grating, jewel cross nebulizer, SCOTTON fog For high content, use a swirl spray chamber, winXP computer operating system, Winlab32 software, the working parameters are shown in Table 1. The measurement wavelength of phosphorus is: 213.617nm.

[0045] Table 1 ICP-AES instrument working condition parameter list

[0046]

[0047]

[0048] 1. Draw the calibration curve.

[0049] Take five 250mL volumetric flasks and pipette 30% manganese standard solution respectively, pipette phosphorus standard solution according to Table 2 to prepare a plurality of standard solutions with different concentrations, introduce the standard solutions into the ICP emission spectrometer respectively, measure the emitted light intensity, and draw the workin...

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Abstract

The invention discloses a method of measuring phosphorus content in nitrogen-manganese alloy, comprising: adding a weighed nitrogen-manganese alloy sample into a triangular flask, adding hydrochloric acid and nitric acid, and dissolving the sample at low temperature to form sample solution; adding perchloric acid, heating until smoking to oxidize trivalent chromium into hexavalent chromium, dropwise adding hydrochloric acid to drive away yellow smoke, smoking again, and dropwise adding hydrochloric acid; adding hydrochloric acid and water, heating to dissolve salts, filtering with filter paper, and adding filtrate in a beaker; washing the beaker with hydrochloric acid, transferring precipitate and the filter paper to a platinum crucible, ashing at low temperature, and combusting in a high-temperature furnace at 800-850 DEG C; adding a mixed solvent, melting in the high-temperature furnace, taking out, and cooling; putting the platinum crucible in a beaker in which water and hydrochloric acid are added preliminarily, boiling until big bubbles occur, cooling to room temperature, washing the platinum crucible, combining extract and mother liquid, and transferring to a volumetric flask for volume fixation; introducing the combined solution to a plasma emission spectrograph light source, analyzing by using reagent blank as a reference according to instrument analytical procedure, and measuring phosphorus content.

Description

technical field [0001] The invention relates to an instrument analysis technique, in particular to a method for measuring phosphorus content in nitrogen-manganese alloys. Background technique [0002] Nitrogen-manganese alloy can be used to smelt multi-component alloy steel, in which nitrogen can improve the strength and plasticity of steel and expand the austenite zone of steel. Therefore, nitrogen-manganese alloy can replace nickel in many steel grades in stainless steel, and nickel is a rare and precious element. Manganese plays a role in deoxidation, desulfurization and alloying in steelmaking. The presence of manganese can eliminate or weaken the hot embrittlement caused by sulfur, and improve the thermal processing properties of steel. [0003] The phosphorus content in nitrogen-manganese alloys has a great impact on the steelmaking industry, because nitrogen-manganese alloys are used in large amounts in steelmaking, and almost all phosphorus elements enter molten ste...

Claims

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Application Information

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IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 段晓晨戴文杰刘钢耀
Owner INNER MONGOLIA BAOTOU STEEL UNION
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