CN102181874A - Acid-washing method of stainless steel wire for welding - Google Patents
Acid-washing method of stainless steel wire for welding Download PDFInfo
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- CN102181874A CN102181874A CN 201110087049 CN201110087049A CN102181874A CN 102181874 A CN102181874 A CN 102181874A CN 201110087049 CN201110087049 CN 201110087049 CN 201110087049 A CN201110087049 A CN 201110087049A CN 102181874 A CN102181874 A CN 102181874A
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Abstract
The invention relates to an acid-washing method of a stainless steel wire for welding, comprising the steps of mixed acid soaking, washing, passivation, flushing and drying. The acid-washing method is characterized in that the acid liquor for mixed acid pickling comprises the following components by weight percent: 5%-20% of nitric acid, 5%-20% of cyanogen-fluorine acid, 0.1%-2% of hydrochloric acid and the balance of water. The acid-washing temperature is 20-70 DEG C, and the acid-washing time is 10-90min. According to the acid-washing method of the stainless steel wire for welding, the operation is simple, the production cost is low, and the acid-washing quality can achieve the GB/T4241-2006 level of national standard.
Description
Technical field
The present invention relates to a kind of acid washing method of stainless steel for soldering wire rod.
Background technology
STAINLESS STEEL WIRE is after hot rolling or thermal treatment, and surface coverage oxide skin, and not only solidity to corrosion does not guarantee, and can not form the beautiful silvery white color and luster of stainless steel surface, must remove oxide skin through overpickling and just can reach this two purposes.
The stainless steel surface iron scale is a complex multilayered structures, and Cr, Ni in the difficulty or ease of acid-washing stainless steel and the steel, Mo content are relevant, and Cr, Ni in the steel, Mo content are high more, and the oxide compound of Cr, Ni, Mo is fine and close more in the oxide skin, just difficult more pickling.
When welding, weld seam is the weak link of the strength of materials, plasticity and erosion resistance, therefore is not less than the performance of mother metal for the performance that makes weld seam, and main alloy element Cr, Ni, Mo content are all high by 1～3% than mother metal in the stainless steel welding material.Therefore, the pickling of producing the STAINLESS STEEL WIRE that stainless steel electrode, welding wire use difficulty relatively.At present both at home and abroad the acid washing method of stainless steel for soldering wire rod is to adopt a lot of grooves to carry out multiple working procedures such as salt bath, water are quick-fried, nitration mixture pickling, washing, passivation, flushing, drying to come pickling stainless steel for soldering wire rod, and some operation also needs several times repeatedly.Generally adopt multiple solution various combination, different concns such as sulfuric acid, hydrochloric acid, potassium permanganate, cyanogen fluoric acid, nitric acid to test.Existing acid-washing stainless steel method is generally only used one to two kind of acid, just can finish pickling, but through overtesting, and for the stainless steel for soldering wire rod, existing acid washing method is scale removal effectively all, and it is long that the acid pickling step polyacid is washed the cycle.Equipment is more in addition, comprises Controlling System, environment friendly system etc., and facility investment and production cost are all very high.The electrolytic pickling method is to make oxide skin dissolution and produce gas by electrolysis oxide skin is peeled off, reach the purpose of scale removal, because it is bigger to put in order the total specific surface area of spiral material,, be not suitable for being used in enormous quantities producing so required power supply and electrode equipment are also very huge.
Summary of the invention
In order to overcome the above-mentioned deficiency of the acid washing method that has the stainless steel for soldering wire rod now, the invention provides the acid washing method of the low a kind of stainless steel for soldering wire rod of a kind of technology simple production cost.
The acid washing method of this stainless steel for soldering wire rod adopts the chemical pickling method, the stainless steel for soldering wire rod directly is immersed in cyanogen fluoric acid, nitric acid and three kinds of mixing acid of hydrochloric acid, its principle is that the chlorion of hydrochloric acid is as activator, can replace the oxygen in the oxide skin, changed the oxide skin structure, make it be soluble in the cyanogen fluoric acid, improved pickling efficient.And if the conventional acid washing method does not have chlorion to activate this means, then pickling is chronic, also be difficult for wash clean, if the chlorion activation is arranged, but do not add cyanogen fluoric acid, nitric acid, the matrix below the wire surface oxide skin is also corroded, because nitric acid has oxidisability, can guarantee cyanogen fluoric acid and hydrochloric acid to only oxide skin being worked, and can not damage with the STAINLESS STEEL WIRE matrix welding.
The acid washing method of this stainless steel for soldering wire rod comprises following nitration mixture immersion, washing, passivation, flushing and drying step successively, it is characterized in that the weight percent of the acid solution of nitration mixture pickling is:
Nitric acid 5%-20% cyanogen fluoric acid 5%-20% hydrochloric acid 0.1%-2%, all the other are water.
Acid liquor temperature 20-70 ℃, the pickling time is 10-90 minute.
The acid washing method of above-mentioned stainless steel for soldering wire rod is characterized in that the weight percent of the acid solution of nitration mixture pickling is:
Nitric acid 12.5% cyanogen fluoric acid 12.5% hydrochloric acid 1.0% water 74%.
The acid washing method of this stainless steel for soldering wire rod will have that salt bath, the water of chemical pickling is quick-fried now, nitration mixture pickling, washing, passivation, flushing and dry seven key steps, be reduced to nitration mixture immersion, washing, passivation, flushing and dry five steps, easy and simple to handle, production cost is low, reached the effect of simplifying the stainless steel for soldering wire acid cleaning process.And the input of minimizing pickling installation, reduced pickling expense and production cost.After the acid washing method process laboratory test of this stainless steel for soldering wire rod, half industrial test, the suitability for industrialized production, pickling quality reaches standard GB/T4241-2006 level.
Embodiment
Describe this stainless steel for soldering wire acid cleaning method embodiment in detail below in conjunction with embodiment, but the specific embodiment of the present invention is not limited to following embodiment.
Embodiment one
The present embodiment pickling be GB H03Cr21Ni10 stainless steel for soldering, diameter of phi 5.5mm, 4.2 tons of the every batch of pickling amount 4 volumes.
The steps in sequence of this stainless steel for soldering wire acid cleaning embodiment is:
1 nitration mixture pickling
The pickling tank of 4 volume H03Cr21Ni10 stainless steel for soldering wire rods being put into following pickle solution soaked 30 minutes:
Pickle solution ratio (weight percentage) is:
Nitric acid 15% cyanogen fluoric acid 10% hydrochloric acid 1.5% water 73.5%
50 ℃ of acid liquor temperatures, pickle solution 9.8m
3
2 washings
4 volume H03Cr21Ni10 stainless steel for soldering wire rods are put into tank washing 10 minutes, pickle solution is cleaned.
3 passivation
Stainless steel for soldering wire rod after the washing is put into (weight percent) 15% nitric acid passivating solution carried out Passivation Treatment 3-10 minute, nitric acid has oxidisability, with the Cr generation oxidizing reaction of stainless steel for soldering wire surface, the Cr of formation
2O
3Be the oxide film of densification, thereby form protective membrane at stainless steel for soldering wire rod outside surface.
4 flushings
With the stainless steel for soldering wire rod hydraulic pressure after the passivation is 4 ± 1Mpa left and right sides high pressure water washing, clean the flushing of the passivating solution of stainless steel for soldering wire rod.
5 dryings
Stainless steel for soldering wire rod after the flushing is placed on drying zone carries out drying, drying zone is bolster wood on the ground, dries up with calorifier on every side, about 35 ± 3 ℃, locates 20 minutes, and the water oven dry of stainless steel for soldering wire surface is clean.
Embodiment two
The present embodiment pickling be GB H03Cr24Ni13 stainless steel for soldering, diameter of phi 5.5mm, 4.2 tons of the every batch of pickling amount 4 volumes.
This stainless steel for soldering wire acid cleaning embodiment and the difference of embodiment one are that the pickle solution of step 1 nitration mixture pickling is different.It is that the pickling tank that 4 volume H03Cr24Ni13 stainless steel for soldering wire rods are put into following pickle solution was soaked 40 minutes:
Pickle solution ratio (weight percentage) is:
Nitric acid 20% cyanogen fluoric acid 15% hydrochloric acid 1.0% water 64%
30 ℃ of acid liquor temperatures, pickle solution 9.8m
3
Washing, passivation, flushing are identical with embodiment one with the operation of drying step.
Embodiment three
The present embodiment pickling be GB H03Cr19Ni12Mo2Si stainless steel for soldering, diameter of phi 5.5mm, 4.2 tons of the every batch of pickling amount 4 volumes.
This stainless steel for soldering wire acid cleaning embodiment and the difference of embodiment one are that the pickle solution of step 1 nitration mixture pickling is different.It is that the pickling tank that 4 volume H03Cr19Ni12Mo2Si stainless steel for soldering wire rods are put into following pickle solution was soaked 60 minutes:
Pickle solution ratio (weight percentage) is:
Nitric acid 10% cyanogen fluoric acid 10% hydrochloric acid 0.5% water 79.5%
60 ℃ of acid liquor temperatures, pickle solution 9.8m
3
Washing, passivation, flushing are identical with embodiment one with the operation of drying step.
Embodiment four
The present embodiment pickling be GB H03Cr24Ni13Si stainless steel for soldering, diameter of phi 5.5mm, 4.2 tons of the every batch of pickling amount 4 volumes.
This stainless steel for soldering wire acid cleaning embodiment and the difference of embodiment one are that the pickle solution of step 1 nitration mixture pickling is different.It is that the pickling tank that 4 volume H03Cr24Ni13Si stainless steel for soldering wire rods are put into following pickle solution was soaked 50 minutes:
Pickle solution ratio (weight percentage) is:
Nitric acid 12.5% cyanogen fluoric acid 12.5% hydrochloric acid 1.0% water 74%.
45 ℃ of acid liquor temperatures, pickle solution 9.8m
3
Washing, passivation, flushing are identical with embodiment one with the operation of drying step.
Claims (2)
1. the acid washing method of a stainless steel for soldering wire rod, it comprises nitration mixture immersion, washing, passivation, flushing and drying step, it is characterized in that the weight percent of the acid solution of nitration mixture pickling is:
Nitric acid 5%-20% cyanogen fluoric acid 5%-20% hydrochloric acid 0.1%-2%, all the other are water.
Acid liquor temperature 20-70 ℃, the pickling time is 10-90 minute.
2. the acid washing method of stainless steel for soldering wire rod according to claim 1 is characterized in that the weight percent of the acid solution of nitration mixture pickling is:
Nitric acid 12.5% cyanogen fluoric acid 12.5% hydrochloric acid 1.0% water 74%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110087049 CN102181874A (en) | 2011-03-31 | 2011-03-31 | Acid-washing method of stainless steel wire for welding |
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| CN 201110087049 CN102181874A (en) | 2011-03-31 | 2011-03-31 | Acid-washing method of stainless steel wire for welding |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965673A (en) * | 2012-11-28 | 2013-03-13 | 中国铝业股份有限公司 | Method for cleaning stainless steel impeller of water pump |
| CN103343352A (en) * | 2013-07-11 | 2013-10-09 | 杭州华光焊接新材料股份有限公司 | Cleaning method and cleaning device for brazing filler metal extruded wire |
| CN103469193A (en) * | 2013-08-23 | 2013-12-25 | 中核苏阀横店机械有限公司 | Formula of forming pickling passivation solution for surface oxide film of stainless steel casting |
| CN103590057A (en) * | 2013-11-12 | 2014-02-19 | 太原钢铁(集团)有限公司 | Pickling method of aluminum-containing nickel-base superalloy |
| CN105420742A (en) * | 2015-12-25 | 2016-03-23 | 振石集团东方特钢有限公司 | Pickling solution for austenitic stainless steel intergranular corrosion sensitizing treatment sample and pickling method thereof |
| CN105648451A (en) * | 2015-12-25 | 2016-06-08 | 振石集团东方特钢有限公司 | Pickling solution for removing hot-rolled double-phase stainless steel oxide skin and pickling method of pickling solution |
| CN110129874A (en) * | 2019-05-20 | 2019-08-16 | 中冶南方工程技术有限公司 | Stainless steel high-efficiency washing device and method |
| CN111424283A (en) * | 2020-04-30 | 2020-07-17 | 苏州强新合金材料科技有限公司 | Pickling process for steel wire |
| CN112430786A (en) * | 2020-11-23 | 2021-03-02 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for welding in hydropower industry and preparation method thereof |
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| CN1970209A (en) * | 2006-12-01 | 2007-05-30 | 宁波江丰电子材料有限公司 | Diffusion welding method |
| CN100431778C (en) * | 2006-08-21 | 2008-11-12 | 玉环海荣金属制品有限公司 | Method for making stainless steel ware |
| WO2008141716A1 (en) * | 2007-05-16 | 2008-11-27 | Siemens Vai Metals Technologies Sas | Equipment and method for processing pickling solutions for silicon steel strips |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100431778C (en) * | 2006-08-21 | 2008-11-12 | 玉环海荣金属制品有限公司 | Method for making stainless steel ware |
| CN1970209A (en) * | 2006-12-01 | 2007-05-30 | 宁波江丰电子材料有限公司 | Diffusion welding method |
| WO2008141716A1 (en) * | 2007-05-16 | 2008-11-27 | Siemens Vai Metals Technologies Sas | Equipment and method for processing pickling solutions for silicon steel strips |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965673A (en) * | 2012-11-28 | 2013-03-13 | 中国铝业股份有限公司 | Method for cleaning stainless steel impeller of water pump |
| CN103343352A (en) * | 2013-07-11 | 2013-10-09 | 杭州华光焊接新材料股份有限公司 | Cleaning method and cleaning device for brazing filler metal extruded wire |
| CN103469193A (en) * | 2013-08-23 | 2013-12-25 | 中核苏阀横店机械有限公司 | Formula of forming pickling passivation solution for surface oxide film of stainless steel casting |
| CN103590057A (en) * | 2013-11-12 | 2014-02-19 | 太原钢铁(集团)有限公司 | Pickling method of aluminum-containing nickel-base superalloy |
| CN105420742A (en) * | 2015-12-25 | 2016-03-23 | 振石集团东方特钢有限公司 | Pickling solution for austenitic stainless steel intergranular corrosion sensitizing treatment sample and pickling method thereof |
| CN105648451A (en) * | 2015-12-25 | 2016-06-08 | 振石集团东方特钢有限公司 | Pickling solution for removing hot-rolled double-phase stainless steel oxide skin and pickling method of pickling solution |
| CN110129874A (en) * | 2019-05-20 | 2019-08-16 | 中冶南方工程技术有限公司 | Stainless steel high-efficiency washing device and method |
| CN111424283A (en) * | 2020-04-30 | 2020-07-17 | 苏州强新合金材料科技有限公司 | Pickling process for steel wire |
| CN112430786A (en) * | 2020-11-23 | 2021-03-02 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for welding in hydropower industry and preparation method thereof |
| CN112430786B (en) * | 2020-11-23 | 2022-02-18 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for welding in hydropower industry and preparation method thereof |
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Application publication date: 20110914 |