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Determination liquid for stainless steel chemical component

A technology for chemical composition and determination of liquid, which is applied in the direction of analysis by chemical reaction of materials, and material analysis by observing the impact on chemical indicators, which can solve the problems of complex operation, inaccuracy and high cost, and achieve the scope of application wide effect

Active Publication Date: 2006-06-28
李殿忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing stainless steel chemical composition determination method or imprecise, or high cost, complex operation, the object of the present invention is: improve the shortcoming of prior art and provide a kind of stainless steel chemical composition measurement liquid, this measurement liquid can be used for The chemical composition of stainless steel is quickly determined on site, and the operation is simple, the application range is wide, no special equipment is required, the cost is low, and the accuracy is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: M2 analysis measurement liquid: take by weighing stannous chloride 16.85 grams and place in 100 milliliters of beakers, add after hydrochloric acid (density 1.19 grams / ml) 13.77 grams dissolve, add ammonium thiocyanate 1.75 grams, drip ammoniacal liquor (density 0.90 g / ml) and 0.8 g to neutralize, add 66.83 g of distilled water to dilute.

[0020] For example, determine the content of molybdenum in 316 stainless steel. Put one drop of the M2 analysis and measurement liquid on the steel surface, use a 9V battery, put the positive electrode on the steel, and the negative electrode on the top of the measurement liquid droplet, and oxidize it when it is energized. The red complex will not retreat, which proves that the molybdenum content in the steel has reached 2 or more (That is to say, it contains 2% Mo or more than 2% Mo on average).

[0021] The M2 analysis and measurement solution can also identify the content of nickel in alloys, including 2080 superal...

Embodiment 2

[0022] Example 2: N low analysis and measurement solution: in 94.8 grams of distilled water, slowly add 2.7 grams of sulfuric acid (density 1.84 grams / ml), after cooling, add 2.5 grams of phosphoric acid (density 1.7 grams / ml) and mix well.

[0023] This low N analysis solution is the nemesis of stainless steel, and is used for professional determination of true and false stainless steel. For example: Determination of Ni 2 mn 13 The content in nickel-manganese alloy, put a drop of N low analysis and measurement solution on the white steel without oxide layer, and it will turn rose red after being oxidized by electricity. Its nickel content is less than or equal to 2, and its manganese content is more than 10 (ie Indicates that the average Ni content is less than or equal to 2%, and the Mn content is greater than 10%).

Embodiment 3

[0024] Embodiment 3: N Analyzing and measuring liquid: weigh 1.35 grams of sodium hydroxide in a dissolving cup, add 40 grams of water to dissolve, add 0.1 gram of dimethylglyoxime, 0.45 grams of EDTA, 9 grams of sodium potassium tartrate, and 0.42 grams of sodium fluoride to All dissolved, add 48.68 grams of distilled water and stir well.

[0025] For example: to measure the content of nickel in stainless steel, drop a drop of N2 analysis and measurement solution on the surface of the stainless steel, and generate a red complex after electrification, which proves that the nickel content in the steel has reached 2 or more (that is, the average Ni content is ≥ 2 %).

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PUM

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Abstract

A test liquid of stainless steel chemical composition is prepared by wt.% from compositions as hydrochloric acid of 0.0-20, ammonia water of 0.0 ¿C 90, tin dichloride of 0.0 ¿C 30, ammonium rhodanate of 0.0 ¿C 5, sulfuric acid of 0.0 ¿C 15, phosphoric acid of 0.0 ¿C 10, complexone IV B of 0.0 ¿C 2.5, sodium fluoride of 0.0 ¿C 2, diacetyldioxime of 0.0 ¿C 0.5, sodium hydroxide of 0 ¿C 2.5, Seignette salt of 0.0 ¿C 15, hydroxylamine hydrochloride of 0.0 ¿C 1.5, superammonium sulfate of 0.0 ¿C 2.0, sodium rhodanate of 0.0 ¿C 2.5 and allowance of distilled water.

Description

technical field [0001] The invention relates to a measuring solution for measuring the content of metal elements in stainless steel. Background technique [0002] At present, in the material recycling industry, in order to identify the nature of metal materials, the traditional method is to use magnets or files to distinguish whether it is "iron" or "steel". This extremely primitive method cannot be used for accurate measurement, so many high-temperature alloys and precious metal materials are treated as waste, resulting in a waste of resources. The analytical chemical reagents or instrumental analysis used in the existing metallurgical furnace analysis require special instruments and equipment or reagents, which are expensive and complicated to operate, which limits their application. Contents of the invention [0003] In order to overcome the deficiencies of the existing stainless steel chemical composition determination method or imprecise, or high cost, complex operat...

Claims

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Application Information

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IPC IPC(8): G01N21/78
Inventor 李殿忠
Owner 李殿忠
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