CN104374766A - Method for identifying stainless steel brand and existence of manganese, molybdenum, and nickel in stainless steel - Google Patents
Method for identifying stainless steel brand and existence of manganese, molybdenum, and nickel in stainless steel Download PDFInfo
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- CN104374766A CN104374766A CN201310347859.5A CN201310347859A CN104374766A CN 104374766 A CN104374766 A CN 104374766A CN 201310347859 A CN201310347859 A CN 201310347859A CN 104374766 A CN104374766 A CN 104374766A
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Abstract
The invention discloses a method for identifying the stainless steel brand and existence of manganese, molybdenum, and nickel in stainless steel. In the provided method, a stainless steel color developing solution, a manganese color developing solution, a molybdenum color developing solution, and a nickel color developing solution are dropwise added on stainless steel, through observing the color change of the color developing solutions, the brand of the stainless steel can be identified, and the existence of manganese, molybdenum, and nickel elements in the stainless steel can be determined. The provided method can rapidly identify the stainless steel brand on site, is capable of identifying the manganese, molybdenum, and nickel elements in stainless steel, and thus determines the steel type and steel grade of the stainless steel. The raw materials of the identifying solutions are cheap and can be naturally dissolved in water during the preparation process without being heated by an electric oven, thus strong chemical reactions will not happen, and toxic gas will not be generated, so the method is harmless to human and is environment-friendly. The detection is rapid and precise, and the operation is simple and practical.
Description
Technical field
The present invention relates to field stainless steel Components identification technical field, particularly a kind of method identifying the stainless steel trade mark and wherein manganese, molybdenum, nickel element.
Background technology
Manganese, molybdenum, nickel are the main alloy element in stainless steel, and whether the scope fixing with GB matches its content range, are the foundations judging that whether its grade of steel meets.Traditional decision method is that chemical analysis is carried out in drill hole sampling on steel, not only time-consuming but also require great effort, and can destroy stainless steel surfaces simultaneously, and need professional to operate, just can determine result for a long time.Although the fast precision of spectral analysis detection speed is high, because spectrometer is expensive, also need professional to operate simultaneously, be difficult to penetration and promotion.
At present, there is the chemical reagent that can detect the stainless steel trade mark and some metallic elements wherein, but it is short to there is the shelf-life, the phenomenon of easy inefficacy, and preparation trouble needs electric furnace to heat, violent chemical reaction can be produced in process for preparation, produce harmful poison gas, simultaneously contaminated environment.
Therefore, urgently develop a kind of safety and environmental protection, the method for manganese, molybdenum, nickel element in the simple and quick qualification stainless steel trade mark and stainless steel.
Summary of the invention
The object of the invention is to provide a kind of method identifying manganese, molybdenum, nickel element in the stainless steel trade mark and stainless steel.
For achieving the above object, the present invention implements according to following technical scheme:
Identify a method for the stainless steel trade mark, comprise the following steps:
1) drip stainless steel nitrite ion at stainless steel surfaces to be measured, wait for 1-60 second, to observe and the color recording stainless steel nitrite ion changes;
2) by the color contrast of standard colour band and stainless steel nitrite ion, the stainless trade mark can be identified; 201 stainless steel 1-5 show sepia second, the aobvious brownish red of 202 stainless steel 30 seconds, nondiscolouring in 304 stainless steels 60 seconds;
3) the chemical composition formula of the stainless steel nitrite ion described in is: containing 120g copper nitrate and 300g hydrochloric acid in the distilled water of 1000g, copper nitrate makes reductant-oxidant, hydrochloric acid makes mordant.
Identify a method for manganese in stainless steel, molybdenum, nickel element, comprise the following steps:
1. manganese, molybdenum, nickel nitrite ion is dripped at stainless steel surfaces to be measured, with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese, molybdenum and/or nickel nitrite ion 0.5-5s, observe and record manganese, molybdenum, nickel nitrite ion color change;
2. by the color contrast of standard colour band and manganese, molybdenum, nickel nitrite ion, can identify in stainless steel containing manganese, molybdenum, nickel element;
The chemical composition formula of 3. described manganese, molybdenum, nickel nitrite ion is respectively:
A. manganese nitrite ion: containing 10g copper sulphate and 40g sulfuric acid in 1000g distilled water;
B. molybdenum nitrite ion: containing 30g sodium thiocyanate, 90g stannous chloride, 5g ammonium fluoride, 10g glycerine and 50g hydrochloric acid in 1000g distilled water, sodium thiocyanate makes colour former, stannous chloride makes reductive agent, ammonium fluoride and glycerine used as stabilizers, hydrochloric acid make PH correctives;
4-(2-pyridylazo) resorcinol (PAR) containing 1g in the distilled water of c. nickel nitrite ion: 1000g, 12g NaOH, 8g ammonium citrate, 2g sodium tetraborate, 5g disodium ethylene diamine tetraacetate and 5g hydroxylammonium chloride, 4-(2-pyridylazo) resorcinol (PAR) makes developer, screening agent made by ammonium citrate, sodium tetraborate makes buffering agent, disodium ethylene diamine tetraacetate makes complexing agent, hydroxylammonium chloride makes colour developing controlling agent.
Further, described 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese nitrite ion 3-5s, molybdenum nitrite ion 0.5-1s, nickel nitrite ion 3-5s.
Compared with prior art, the present invention can detect the multiple stainless steel trade mark fast, Rapid identification can go out manganese, molybdenum, nickel element in stainless steel, thus judge stainless steel grade and grade of steel; Qualification liquid raw materials cost of the present invention is low, long shelf-life, during preparation, raw material is added to the water nature and dissolves, without the need to heating with electric furnace, can not produce violent chemical reaction in process for preparation, can not produce harmful poison gas, safety and environmental protection; Detect accurately quick, simple to operation.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, is used for explaining the present invention in this illustrative examples of inventing and explanation, but not as a limitation of the invention.
Embodiment 1
Identify a method for the stainless steel trade mark, comprise the following steps:
1) drip stainless steel nitrite ion at stainless steel surfaces to be measured, wait for 1-60 second, to observe and the color recording stainless steel nitrite ion changes;
2) by the color contrast of standard colour band and stainless steel nitrite ion, the stainless trade mark can be identified; 201 stainless steel 1-5 show sepia second, the aobvious brownish red of 202 stainless steel 30 seconds, nondiscolouring in 304 stainless steels 60 seconds;
3) the chemical composition formula of the stainless steel nitrite ion described in is: containing 120g copper nitrate and 300g hydrochloric acid in the distilled water of 1000g, copper nitrate makes reductant-oxidant, hydrochloric acid makes mordant.
Summary: stainless steel nitrite ion is dropped in stainless steel surfaces to be measured, and 201 stainless steel 1-5 show sepia second, the aobvious brownish red of 202 stainless steel 30 seconds, nondiscolouring in 304 stainless steels 60 seconds.
Embodiment 2
Identify a method for manganese in stainless steel, molybdenum, nickel element, comprise the following steps:
1. drip manganese, molybdenum, nickel nitrite ion at stainless steel surfaces to be measured, with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese, molybdenum, nickel nitrite ion 0.5-5s, observe and record manganese, molybdenum, nickel nitrite ion color change;
2. by the color contrast of standard colour band and manganese, molybdenum, nickel nitrite ion, can identify in stainless steel containing manganese, molybdenum, nickel element;
The chemical composition formula of 3. described manganese, molybdenum, nickel nitrite ion is respectively:
A. manganese nitrite ion: containing 10g copper sulphate and 40g sulfuric acid in 1000g distilled water;
B. molybdenum nitrite ion: make PH correctives containing 30g sodium thiocyanate, 90g stannous chloride, 5g ammonium fluoride, 10g glycerine and 50g hydrochloric acid, hydrochloric acid in 1000g distilled water;
4-(2-pyridylazo) resorcinol (PAR) containing 1g in the distilled water of c. nickel nitrite ion: 1000g, 12g NaOH, 8g ammonium citrate, 2g sodium tetraborate, 5g disodium ethylene diamine tetraacetate and 5g hydroxylammonium chloride, 4-(2-pyridylazo) resorcinol (PAR) makes developer, screening agent made by ammonium citrate, sodium tetraborate makes buffering agent, disodium ethylene diamine tetraacetate makes complexing agent, hydroxylammonium chloride makes colour developing controlling agent.
Summary: manganese nitrite ion: with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese nitrite ion 3-5s, 200 is that the stainless steel of low nickel and high manganese can displaing amaranth, and 300 is that nickelic low manganese stainless steel does not develop the color or aobvious faint yellow;
Molybdenum nitrite ion: with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact molybdenum nitrite ion 0.5-1s, the stainless steel (as 316,316L) containing molybdenum element is aobvious red, does not contain the stainless steel (as 201,304) of molybdenum element without colour developing;
Nickel nitrite ion: with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact nickel nitrite ion 3-5s, the stainless steel (as 201,202) of low nickel and high manganese does not develop the color, and nickelic low manganese stainless steel (as 304) is aobvious red.
Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, the technology distortion that every technical scheme according to the present invention is made, and all falls within protection scope of the present invention.
Claims (3)
1. identify a method for the stainless steel trade mark, it is characterized in that comprising the following steps:
1) drip stainless steel nitrite ion at stainless steel surfaces to be measured, wait for 1-60 second, to observe and the color recording stainless steel nitrite ion changes;
2) by the color contrast of standard colour band and stainless steel nitrite ion, the stainless trade mark can be identified;
3) the chemical composition formula of the stainless steel nitrite ion described in is: containing 120g copper nitrate and 300g hydrochloric acid in the distilled water of 1000g, copper nitrate makes reductant-oxidant, hydrochloric acid makes mordant.
2. identify a method for manganese in stainless steel, molybdenum, nickel element, it is characterized in that comprising the following steps:
1. drip manganese, molybdenum, nickel nitrite ion at stainless steel surfaces to be measured, with 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese, molybdenum, nickel nitrite ion 0.5-5s, observe and record manganese, molybdenum, nickel nitrite ion color change;
2. by the color contrast of standard colour band and manganese, molybdenum, nickel nitrite ion, can identify in stainless steel containing manganese, molybdenum, nickel element;
The chemical composition formula of 3. described manganese, molybdenum, nickel nitrite ion is respectively:
A. manganese nitrite ion: containing 10g copper sulphate and 40g sulfuric acid in 1000g distilled water;
B. molybdenum nitrite ion: containing 30g sodium thiocyanate, 90g stannous chloride, 5g ammonium fluoride, 10g glycerine and 50g hydrochloric acid in 1000g distilled water, sodium thiocyanate makes colour former, stannous chloride makes reductive agent, ammonium fluoride and glycerine used as stabilizers, hydrochloric acid make PH correctives;
4-(2-pyridylazo) resorcinol (PAR) containing 1g in the distilled water of c. nickel nitrite ion: 1000g, 12g NaOH, 8g ammonium citrate, 2g sodium tetraborate, 5g disodium ethylene diamine tetraacetate and 5g hydroxylammonium chloride, 4-(2-pyridylazo) resorcinol (PAR) makes developer, screening agent made by ammonium citrate, sodium tetraborate makes buffering agent, disodium ethylene diamine tetraacetate makes complexing agent, hydroxylammonium chloride makes colour developing controlling agent.
3. the method for manganese, molybdenum, nickel element in qualification stainless steel according to claim 2, is characterized in that: described 9V anode welding lead contact measured stainless steel surfaces, negative pole welding lead contact manganese nitrite ion 3-5s, molybdenum nitrite ion 0.5-1s, nickel nitrite ion 3-5s.
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| CN201310347859.5A CN104374766A (en) | 2013-08-12 | 2013-08-12 | Method for identifying stainless steel brand and existence of manganese, molybdenum, and nickel in stainless steel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678329A (en) * | 2016-01-04 | 2016-06-15 | 聚光科技(杭州)股份有限公司 | Method for identifying designations |
| CN107084978A (en) * | 2017-05-05 | 2017-08-22 | 葛翕禹 | A kind of quick discriminating food-grade stainless steel method |
| CN107462576A (en) * | 2017-08-21 | 2017-12-12 | 河北城大金属集团有限公司 | The quick simultaneous measuring method of molybdenum copper component in ferro-molybdenum |
| CN108918512A (en) * | 2018-06-08 | 2018-11-30 | 浙江方圆金属材料检测有限公司 | A kind of detection reagent and detection method of stainless steel nickel content |
| CN117517300A (en) * | 2023-11-01 | 2024-02-06 | 师宗县沃莱迪金属材料有限公司 | Method for efficiently and accurately distinguishing stainless steel types |
-
2013
- 2013-08-12 CN CN201310347859.5A patent/CN104374766A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678329A (en) * | 2016-01-04 | 2016-06-15 | 聚光科技(杭州)股份有限公司 | Method for identifying designations |
| CN107084978A (en) * | 2017-05-05 | 2017-08-22 | 葛翕禹 | A kind of quick discriminating food-grade stainless steel method |
| CN107462576A (en) * | 2017-08-21 | 2017-12-12 | 河北城大金属集团有限公司 | The quick simultaneous measuring method of molybdenum copper component in ferro-molybdenum |
| CN108918512A (en) * | 2018-06-08 | 2018-11-30 | 浙江方圆金属材料检测有限公司 | A kind of detection reagent and detection method of stainless steel nickel content |
| CN108918512B (en) * | 2018-06-08 | 2021-03-02 | 浙江方圆金属材料检测有限公司 | Detection reagent and detection method for nickel content of stainless steel |
| CN117517300A (en) * | 2023-11-01 | 2024-02-06 | 师宗县沃莱迪金属材料有限公司 | Method for efficiently and accurately distinguishing stainless steel types |
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Application publication date: 20150225 |