CN102383131A - Formula for corrosive medicinal liquid used for high hardness die steel and preparation method for same - Google Patents

Formula for corrosive medicinal liquid used for high hardness die steel and preparation method for same Download PDF

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CN102383131A
CN102383131A CN2011103427378A CN201110342737A CN102383131A CN 102383131 A CN102383131 A CN 102383131A CN 2011103427378 A CN2011103427378 A CN 2011103427378A CN 201110342737 A CN201110342737 A CN 201110342737A CN 102383131 A CN102383131 A CN 102383131A
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solution
water
weight ratio
preparation
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CN102383131B (en
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任志同
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MOLD TECH (DONGGUAN) CO LTD
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MOLD TECH (DONGGUAN) CO LTD
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Abstract

The invention relates to the technical field of corrosive medicinal liquid for dies and especially to a formula for corrosive medicinal liquid used for high hardness die steel during oxidation of a die and a preparation method for the same. The corrosive medicinal liquid used for high hardness die steel provided in the invention is prepared from the following raw materials on the basis of a solution volume ratio: 10% to 20% of a ferric trichloride solution, 10% to 20% of a cupric chloride solution, 20% to 30% of a phosphoric acid solution, 20% to 30% of a mixed solution of nitric acid and hydrochloric acid and 15% to 25% of a hydrofluoric acid solution; the corrosive effects and the corrosive speed of the corrosive medicinal liquid are effectively improved, and the corrosion performance of the corrosive medicinal liquid is not affected by temperature.

Description

A kind of high firmness die steel corrosion liquid medicine prescription and preparation method thereof
Technical field
The present invention relates to mould corrosion liquid medicine technical field, relate in particular to a kind of high firmness die steel corrosion liquid medicine prescription that the oxidation mould uses and preparation method thereof.
Background technology
Existing mould erosion line technology; The normal corrosive nature that adopts chemical medicinal liquid causes all kinds of patterns on the surface of unlike material goods, like sediment ripples, striped, image, wood grain, dermatoglyph and silks and satins pattern etc.; Play the effect of decorative product; Make product more attractive in appearance, elegance lets product that more good hand feeling and visual effect are arranged.
In the prior art, soak in the chemical medicinal liquid that goods need prepare in chemical pond and carry out oxidation corrosion, so that accomplish erosion line technology better.Yet, existing corrosion liquid medicine, its corrosive effect is not ideal enough, and corrosion speed is slower, and its corrosive nature also receives Influence of Temperature easily.
Summary of the invention
The objective of the invention is to be directed against the deficiency of prior art and a kind of high firmness die steel corrosion liquid medicine prescription and preparation method thereof is provided, can effectively improve corrosive effect, the corrosion speed of corroding liquid medicine, and its corrosive nature is not subject to Influence of Temperature.
For realizing above-mentioned purpose, the present invention adopts following technical scheme.
A kind of high firmness die steel corrosion liquid medicine prescription, it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 10% ~ 20%
Cupric Chloride Solution 10% ~ 20%
Phosphoric acid solution 20% ~ 30%
Nitric acid and hydrochloric acid mixed solution 20% ~ 30%
Hydrofluoric acid solution 15% ~ 25%
Wherein,
Said liquor ferri trichloridi is pressed FeCl 3: water is the weight ratio preparation of 1:2;
Said Cupric Chloride Solution is pressed CuCl 2: water is the weight ratio preparation of 1:2;
Said phosphoric acid solution is by 85% concentration H 3PO 3: water is the weight ratio preparation of 1:2;
Said nitric acid and hydrochloric acid mixed solution are by salpeter solution: hydrochloric acid soln is the weight ratio preparation of 3:1; Said salpeter solution is by 68% concentration HNO 3: water is the weight ratio preparation of 2:1; Said salpeter solution is by 31% concentration HCl: water is the weight ratio preparation of 2:1;
Said hydrofluoric acid solution is by 50% concentration hydrogen fluoric acid: water is the weight ratio preparation of 1:1.
Preferably, described a kind of high firmness die steel corrosion liquid medicine prescription, it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 15%
Cupric Chloride Solution 15%
Phosphoric acid solution 25%
Nitric acid and hydrochloric acid mixed solution 25%
Hydrofluoric acid solution 20%.
Preferably, described a kind of high firmness die steel corrosion liquid medicine prescription, it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 18%
Cupric Chloride Solution 18%
Phosphoric acid solution 22%
Nitric acid and hydrochloric acid mixed solution 22%
Hydrofluoric acid solution 20%.
Preferably, described a kind of high firmness die steel corrosion liquid medicine prescription, it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 20%
Cupric Chloride Solution 20%
Phosphoric acid solution 22.5%
Nitric acid and hydrochloric acid mixed solution 22.5%
Hydrofluoric acid solution 15%.
A kind of preparation method of high firmness die steel corrosion liquid medicine presses FeCl 3: water is the weight ratio preparation liquor ferri trichloridi of 1:2, stirs at plastic bottle with stirring rod and makes FeCl 3Fully be dissolved in water;
Press CuCl 2: water is the weight ratio preparation Cupric Chloride Solution of 1:2, stirs at plastic bottle with stirring rod and makes CuCl 2Fully be dissolved in water;
By 85% concentration H 3PO 3: water is the weight ratio preparation phosphoric acid solution of 1:2,85% concentration H during preparation 3PO 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water;
By 68% concentration HNO 3: water is the weight ratio preparation salpeter solution of 2:1,68% concentration HNO during preparation 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water;
By 31% concentration HCl: water is the weight ratio preparation salpeter solution of 2:1, and 31% concentration HCl will slowly flow into container along wall of container and mixes with water during preparation, and stirs solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat;
Wait the temperature of each solution to drop to the successful escharotica water of preparation behind the 40 degree back remix at last.
Beneficial effect of the present invention is: a kind of high firmness die steel corrosion liquid medicine prescription of the present invention and preparation method thereof can effectively improve corrosive effect, the corrosion speed of corroding liquid medicine, and its corrosive nature is not subject to Influence of Temperature.
Embodiment
Below in conjunction with embodiment the present invention is further described.
Embodiment one, a kind of high firmness die steel corrosion liquid medicine prescription according to the invention, and it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 15%
Cupric Chloride Solution 15%
Phosphoric acid solution 25%
Nitric acid and hydrochloric acid mixed solution 25%
Hydrofluoric acid solution 20%,
Wherein, said liquor ferri trichloridi is pressed FeCl 3: water is the weight ratio preparation of 1:2; Said Cupric Chloride Solution is pressed CuCl 2: water is the weight ratio preparation of 1:2; Said phosphoric acid solution is by 85% concentration H 3PO 3: water is the weight ratio preparation of 1:2; Said nitric acid and hydrochloric acid mixed solution are by salpeter solution: hydrochloric acid soln is the weight ratio preparation of 3:1; Said salpeter solution is by 68% concentration HNO 3: water is the weight ratio preparation of 2:1; Said salpeter solution is by 31% concentration HCl: water is the weight ratio preparation of 2:1; Said hydrofluoric acid solution is by 50% concentration hydrogen fluoric acid: water is the weight ratio preparation of 1:1.
Embodiment two, a kind of high firmness die steel corrosion liquid medicine prescription according to the invention, and it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 18%
Cupric Chloride Solution 18%
Phosphoric acid solution 22%
Nitric acid and hydrochloric acid mixed solution 22%
Hydrofluoric acid solution 20%,
Wherein, said liquor ferri trichloridi is pressed FeCl 3: water is the weight ratio preparation of 1:2; Said Cupric Chloride Solution is pressed CuCl 2: water is the weight ratio preparation of 1:2; Said phosphoric acid solution is by 85% concentration H 3PO 3: water is the weight ratio preparation of 1:2; Said nitric acid and hydrochloric acid mixed solution are by salpeter solution: hydrochloric acid soln is the weight ratio preparation of 3:1; Said salpeter solution is by 68% concentration HNO 3: water is the weight ratio preparation of 2:1; Said salpeter solution is by 31% concentration HCl: water is the weight ratio preparation of 2:1; Said hydrofluoric acid solution is by 50% concentration hydrogen fluoric acid: water is the weight ratio preparation of 1:1.
Embodiment three, a kind of high firmness die steel corrosion liquid medicine prescription according to the invention, and it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 20%
Cupric Chloride Solution 20%
Phosphoric acid solution 22.5%
Nitric acid and hydrochloric acid mixed solution 22.5%
Hydrofluoric acid solution 15%,
Wherein, said liquor ferri trichloridi is pressed FeCl 3: water is the weight ratio preparation of 1:2; Said Cupric Chloride Solution is pressed CuCl 2: water is the weight ratio preparation of 1:2; Said phosphoric acid solution is by 85% concentration H 3PO 3: water is the weight ratio preparation of 1:2; Said nitric acid and hydrochloric acid mixed solution are by salpeter solution: hydrochloric acid soln is the weight ratio preparation of 3:1; Said salpeter solution is by 68% concentration HNO 3: water is the weight ratio preparation of 2:1; Said salpeter solution is by 31% concentration HCl: water is the weight ratio preparation of 2:1; Said hydrofluoric acid solution is by 50% concentration hydrogen fluoric acid: water is the weight ratio preparation of 1:1.
Embodiment four, the foregoing description one to three described a kind of high firmness die steel corrosion liquid medicine, and its preparation method is:
Press FeCl 3: water is the weight ratio preparation liquor ferri trichloridi of 1:2, stirs at plastic bottle with stirring rod and makes FeCl 3Fully be dissolved in water; Press CuCl 2: water is the weight ratio preparation Cupric Chloride Solution of 1:2, stirs at plastic bottle with stirring rod and makes CuCl 2Fully be dissolved in water; By 85% concentration H 3PO 3: water is the weight ratio preparation phosphoric acid solution of 1:2,85% concentration H during preparation 3PO 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water; By 68% concentration HNO 3: water is the weight ratio preparation salpeter solution of 2:1,68% concentration HNO during preparation 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water; By 31% concentration HCl: water is the weight ratio preparation salpeter solution of 2:1, and 31% concentration HCl will slowly flow into container along wall of container and mixes with water during preparation, and stirs solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat; Wait the temperature of each solution to drop to the successful escharotica water of preparation behind the 40 degree back remix at last.The instrument that need use in the above-mentioned obtain solution process has measuring cup, stirring rod, and electronic scale, container need be with gloves and face guard during obtain solution.
Above-mentioned a kind of high firmness die steel corrosion liquid medicine and preparation method thereof can effectively improve corrosive effect, the corrosion speed of corrosion liquid medicine, and its corrosive nature is not subject to Influence of Temperature, can be widely used in the corrosion of various high firmness die steels.
The described a kind of high firmness die steel corrosion liquid medicine of embodiment one to embodiment three, the contrast table of itself and common liquid medicine of the prior art is as shown in the table.
The solution title Corrosive effect Corrosion speed Temperature influence
A kind of high firmness die steel corrosion of the present invention liquid medicine Lines corrosive effect to the high firmness die steel is good, and lines is beautiful, and the smooth no pit of line face meets the lines corrosion requirement of high request F corrosion rapid speed, 13 ~ 15 μ m/ minutes F corrosive liquid temperature influence little 40 the degree degree centigrade best results, corrosion speed is the fastest
General corrosion liquid Lines corrosive effect to the die steel of high firmness is bad, and the line face is smooth inadequately and pit arranged General corrosion corrosion speed is slower, and 7 μ m/ minutes, not even corrosion General corrosion liquid temperature influence could corrode in the time of will being heated to 60 degrees centigrade to the temperature of liquid greatly usually.
[0019]The above only is a preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.

Claims (5)

1. a high firmness die steel corrodes the liquid medicine prescription, and it is characterized in that: it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 10% ~ 20%
Cupric Chloride Solution 10% ~ 20%
Phosphoric acid solution 20% ~ 30%
Nitric acid and hydrochloric acid mixed solution 20% ~ 30%
Hydrofluoric acid solution 15% ~ 25%
Wherein,
Said liquor ferri trichloridi is pressed FeCl 3: water is the weight ratio preparation of 1:2;
Said Cupric Chloride Solution is pressed CuCl 2: water is the weight ratio preparation of 1:2;
Said phosphoric acid solution is by 85% concentration H 3PO 3: water is the weight ratio preparation of 1:2;
Said nitric acid and hydrochloric acid mixed solution are by salpeter solution: hydrochloric acid soln is the weight ratio preparation of 3:1; Said salpeter solution is by 68% concentration HNO 3: water is the weight ratio preparation of 2:1; Said salpeter solution is by 31% concentration HCl: water is the weight ratio preparation of 2:1;
Said hydrofluoric acid solution is by 50% concentration hydrogen fluoric acid: water is the weight ratio preparation of 1:1.
2. a kind of high firmness die steel corrosion liquid medicine prescription according to claim 1, it is characterized in that: it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 15%
Cupric Chloride Solution 15%
Phosphoric acid solution 25%
Nitric acid and hydrochloric acid mixed solution 25%
Hydrofluoric acid solution 20%.
3. a kind of high firmness die steel corrosion liquid medicine prescription according to claim 1, it is characterized in that: it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 18%
Cupric Chloride Solution 18%
Phosphoric acid solution 22%
Nitric acid and hydrochloric acid mixed solution 22%
Hydrofluoric acid solution 20%.
4. a kind of high firmness die steel corrosion liquid medicine prescription according to claim 1, it is characterized in that: it is processed by the raw material of following liquor capacity ratio:
Liquor ferri trichloridi 20%
Cupric Chloride Solution 20%
Phosphoric acid solution 22.5%
Nitric acid and hydrochloric acid mixed solution 22.5%
Hydrofluoric acid solution 15%.
5. the preparation method of the described a kind of high firmness die steel corrosion of claim 1 liquid medicine is characterized in that:
Press FeCl 3: water is the weight ratio preparation liquor ferri trichloridi of 1:2, stirs at plastic bottle with stirring rod and makes FeCl 3Fully be dissolved in water;
Press CuCl 2: water is the weight ratio preparation Cupric Chloride Solution of 1:2, stirs at plastic bottle with stirring rod and makes CuCl 2Fully be dissolved in water;
By 85% concentration H 3PO 3: water is the weight ratio preparation phosphoric acid solution of 1:2,85% concentration H during preparation 3PO 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water;
By 68% concentration HNO 3: water is the weight ratio preparation salpeter solution of 2:1,68% concentration HNO during preparation 3To slowly flow into container along wall of container and mix, and stir solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat with water;
By 31% concentration HCl: water is the weight ratio preparation salpeter solution of 2:1, and 31% concentration HCl will slowly flow into container along wall of container and mixes with water during preparation, and stirs solution gently with stirring rod simultaneously and it is fully diluted and dispel the heat;
Wait the temperature of each solution to drop to the successful escharotica water of preparation behind the 40 degree back remix at last.
CN 201110342737 2011-11-03 2011-11-03 Formula for corrosive medicinal liquid used for high hardness die steel and preparation method for same Active CN102383131B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104498952A (en) * 2014-11-24 2015-04-08 模德模具(东莞)有限公司 Stereoscopic texture oxidation liquid medicine
CN105002499A (en) * 2015-08-11 2015-10-28 模德模具(苏州工业园区)有限公司 Texture corrosion liquid medicine
CN105316685A (en) * 2014-07-16 2016-02-10 鞍钢股份有限公司 Cold etching agent capable of displaying pattern segregation of bearing steel casting blank and preparation method thereof
CN106086893A (en) * 2016-06-15 2016-11-09 洛阳双瑞特种装备有限公司 For showing caustic and the method for low-alloy high-strength steel welding heat affected zone subregion
CN114959707A (en) * 2022-05-27 2022-08-30 重庆赛宝工业技术研究院有限公司 Etching liquid and preparation method and application thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1088161A (en) * 1993-10-27 1994-06-22 高平 Steel mould intaglio etching liquid specially for transfer machine electronic
CN101173360A (en) * 2006-10-31 2008-05-07 佛山市顺德区汉达精密电子科技有限公司 Stainless steel etching technique
CN101353794A (en) * 2008-09-03 2009-01-28 董加坤 Austenitic stainless steel metallographic etchant, preparing method and use thereof
EP2196561A2 (en) * 2008-12-15 2010-06-16 General Electric Company A process for removing metallic material from casted substrates, and related compositions
CN101760742A (en) * 2009-12-31 2010-06-30 西安热工研究院有限公司 Austenitic steel deformation layer and preparation and application method of etchant displayed in matrix structure
CN101787532A (en) * 2010-03-05 2010-07-28 江苏科技大学 Method for processing material returning cavity of punching mould by using chemical corrosion
CN102061475A (en) * 2009-11-17 2011-05-18 吕迎新 Etchant for stainless steel
CN102234806A (en) * 2010-04-23 2011-11-09 比亚迪股份有限公司 Stainless steel etching solution and etching method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1088161A (en) * 1993-10-27 1994-06-22 高平 Steel mould intaglio etching liquid specially for transfer machine electronic
CN101173360A (en) * 2006-10-31 2008-05-07 佛山市顺德区汉达精密电子科技有限公司 Stainless steel etching technique
CN101353794A (en) * 2008-09-03 2009-01-28 董加坤 Austenitic stainless steel metallographic etchant, preparing method and use thereof
EP2196561A2 (en) * 2008-12-15 2010-06-16 General Electric Company A process for removing metallic material from casted substrates, and related compositions
CN102061475A (en) * 2009-11-17 2011-05-18 吕迎新 Etchant for stainless steel
CN101760742A (en) * 2009-12-31 2010-06-30 西安热工研究院有限公司 Austenitic steel deformation layer and preparation and application method of etchant displayed in matrix structure
CN101787532A (en) * 2010-03-05 2010-07-28 江苏科技大学 Method for processing material returning cavity of punching mould by using chemical corrosion
CN102234806A (en) * 2010-04-23 2011-11-09 比亚迪股份有限公司 Stainless steel etching solution and etching method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105316685A (en) * 2014-07-16 2016-02-10 鞍钢股份有限公司 Cold etching agent capable of displaying pattern segregation of bearing steel casting blank and preparation method thereof
CN105316685B (en) * 2014-07-16 2018-02-27 鞍钢股份有限公司 A kind of cold erosion agent for showing bearing steel strand pattern segregation and its compound method
CN104498952A (en) * 2014-11-24 2015-04-08 模德模具(东莞)有限公司 Stereoscopic texture oxidation liquid medicine
CN105002499A (en) * 2015-08-11 2015-10-28 模德模具(苏州工业园区)有限公司 Texture corrosion liquid medicine
CN106086893A (en) * 2016-06-15 2016-11-09 洛阳双瑞特种装备有限公司 For showing caustic and the method for low-alloy high-strength steel welding heat affected zone subregion
CN106086893B (en) * 2016-06-15 2018-12-25 洛阳双瑞特种装备有限公司 For showing the corrosive agent and method of low-alloy high-strength steel welding heat affected zone subregion
CN114959707A (en) * 2022-05-27 2022-08-30 重庆赛宝工业技术研究院有限公司 Etching liquid and preparation method and application thereof

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