Chemical analysis test method for rapid determination of high content manganese in aluminum alloy

A rapid determination and testing method technology, applied in the field of chemical analysis, can solve the problems of difficult maintenance, low detection range, cumbersome analysis steps, etc.

Pending Publication Date: 2021-09-14
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the chemical analysis methods for the determination of manganese content in aluminum alloys are potassium periodate spectrophotometry. This method has low detection range, cumbersome analysis steps, long time-consuming, and poor reproducibility when determining high-content Mn.
When using GB/T20975.25-2008 i

Method used

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  • Chemical analysis test method for rapid determination of high content manganese in aluminum alloy
  • Chemical analysis test method for rapid determination of high content manganese in aluminum alloy
  • Chemical analysis test method for rapid determination of high content manganese in aluminum alloy

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Embodiment 1

[0022] see figure 1 , the present invention provides a kind of chemical analysis test method to the rapid determination of high-content manganese in aluminum alloy, comprising the following steps:

[0023] Step 1: Weighing, weigh 0.2000-0.2500gGBW(E)020060 standard sample and a certain alloy sample to be inspected in a 300mL conical flask, wet with a small amount of water, add 15mL phosphoric acid, 5mL nitric acid in a high-temperature electric furnace (360°C) Decompose the sample on the top until it is completely removed, and take it down when there are no large bubbles and white smoke on the liquid surface;

[0024] Step 2: Oxidation, add 1mL of perchloric acid and continue to heat and dissolve on the electric furnace, and shake fully, heat until the liquid surface is completely calm, there are no small bubbles in the solution when shaking, so that the Mn 2+ Oxidized to Mn 3+ ;

[0025] Step 3: Remove and cool to 60-70°C, add 5mL of 1:1 sulfuric acid, dilute to 70-80 mL w...

Embodiment 2

[0032] see figure 1 , the present invention provides a kind of chemical analysis test method to the rapid determination of high-content manganese in aluminum alloy, comprising the following steps:

[0033] Step 1: Weighing, weigh 0.2000-0.2500gGBW(E)020060 standard sample in a 300mL conical flask, moisten it with a small amount of water, add 0.0500g high-purity manganese powder, add 15mL phosphoric acid, 5mL nitric acid in a high-temperature electric furnace (360°C ) to decompose the sample until it is completely removed, and take it down when there are no large bubbles and white smoke on the liquid surface;

[0034] Step 2: Oxidation, add 1mL of perchloric acid and continue to heat and dissolve on the electric furnace, and shake fully, heat until the liquid surface is completely calm, there are no small bubbles in the solution when shaking, so that the Mn 2+ Oxidized to Mn 3+ ;

[0035] Step 3: Remove and cool to 60-70°C, add 5mL of 1:1 sulfuric acid, dilute to 70-80 mL wi...

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Abstract

The present invention relates to the technical field of chemical analysis, and discloses a chemical analysis test method for rapid determination of high content manganese in aluminum alloy. The chemical analysis test method comprises the following steps of 1, weighing: weighing 0.2000-0.2500 g of an alloy sample in a 300 mL conical flask, adding 15 mL of phosphoric acid and 5 mL of nitric acid, completely decomposing the sample on a high temperature electric furnace, and taking down the sample when no large bubble exists on the liquid surface and white smoke is generated, 2, oxidizing, adding 1 mL of perchloric acid, continuously placing on the electric furnace, heating and dissolving, and heating until the liquid level is completely calm, and 3, cooling, taking down, cooling to 60-70 DEG C, adding sulfuric acid, diluting with water to 70-80 mL, and fully shaking to dissolve the viscous material. The method is short in detection time, accurate in detection result, low in cost, simple to operate, few in interference elements and suitable for rapid analysis of the stokehole, the used equipment is simple, the cost is low, and rapid and accurate analysis and detection of high-content manganese in the aluminum alloy are met.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a chemical analysis test method for rapid determination of high-content manganese in aluminum alloys. Background technique [0002] Aluminum has the advantages of low density, electrical and thermal conductivity, corrosion resistance, and good plastic processing performance. However, the strength of pure aluminum is low, so it is not suitable for making structural parts bearing loads. Manganese can prevent the recrystallization process of aluminum alloy, increase the recrystallization temperature of aluminum alloy, and can significantly refine the recrystallization grains. [0003] There are many methods for the determination of manganese content in aluminum alloys, and there are relevant national standards. The content of manganese in some aluminum master alloys AlMn10, AlMn20, AlMn25, AlMn30 and AlMn40 is as high as 9.0% to 43%. Most of the chemical analysis method...

Claims

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Application Information

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IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 方彦霞王彬张彦翠李金明庞振业展之旺孙帅楠王源瑞
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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