CN103590057A - Pickling method of aluminum-containing nickel-base superalloy - Google Patents
Pickling method of aluminum-containing nickel-base superalloy Download PDFInfo
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- CN103590057A CN103590057A CN201310560864.4A CN201310560864A CN103590057A CN 103590057 A CN103590057 A CN 103590057A CN 201310560864 A CN201310560864 A CN 201310560864A CN 103590057 A CN103590057 A CN 103590057A
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Abstract
A prickling method of aluminum-containing nickel-base superalloy is mainly used for removing oxide skins of the aluminum-containing nickel-base superalloy. The prickling method is characterized by comprising the steps as follows: the aluminum-containing nickel-base superalloy after annealing and shot-blasting is soaked and prickled by a pickling liquid at the temperature of 20-70 DEG C for 2.5-10 hours; and the concentration of each substance in the pickling liquid is as follows: 190 g/L-280 g/L of nitric acid, 10 g/L-45 g/L of hydrofluoric acid, 10 g/L-45 g/L of hydrochloric acid, 1-4 g/L of hexamethylenetetramine and the balance of water. According to the invention, a one-step prickling method is adopted, and equipment is not required to be reconstructed; the prickling speed can be obviously increased, and the environmental pollution is reduced; and the prickling surface is not easy to corrode locally, and accordingly, the product quality is guaranteed.
Description
Technical field
The present invention is mainly used in removing aluminium-nickel base contained superalloy oxide skin, and special design is a kind of removes hot extrusion or hot rolling containing the technology of the nickel base superalloy oxide skin of aluminium, is specifically related to a kind of pickling of aluminium-nickel base contained superalloy.
Background technology
High temperature alloy is mainly used in aerospace field at first, due to its good performance such as high temperature resistant, corrosion-resistant, be applied to gradually the industrial circles such as electric power, automobile, metallurgy, glass manufacture, nuclear power, thereby expanded greatly the Application Areas of high temperature alloy.Along with the development of high temperature alloy, its market requirement is in progressively expanding and growth state.
Nickel base superalloy can form Cr in hot extrusion or course of hot rolling
2o
3, the oxide compound such as Ni-Cr-O spinel, NiO, wherein Cr
2o
3play main provide protection, and in oxidizing acid, be difficult for reacting; Ni-Cr-O spinel is insoluble to conventional various acid, makes pickle solution be difficult to contact matrix metal.And can form with Al containing the nickel base superalloy of aluminium
2o
3be main interior oxidation, along crystal boundary, distribute, inlay anchoring in matrix, pickling difficulty is increased.
At present, the pickling for nickel base superalloy both at home and abroad adopts " combined type pickling " technique conventionally, before pickling, adds one pretreatment process, makes oxide skin become loose and easily removes.Conventional combined type pickling is mainly divided into three types: 1. sodium hydride processing → pickling; 2. melting salt processing → pickling; 3. alkaline permanganate processing → pickling.Taiyuan Iron and Steel Co. be take production stainless steel at present as main, and pickling mode is single formula pickling, does not possess pretreatment condition, causes nickel base superalloy pickling speed slow, is badly in need of acid washing method to improve.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of acid washing method of aluminium-nickel base contained superalloy, its objective is in order to make existing installation be applicable to produce nickel-base alloy, put forward heavy alloyed production efficiency, save production cost.
Technical scheme of the present invention is: a kind of acid washing method of aluminium-nickel base contained superalloy, comprises the steps:
(1) the aluminium-nickel base contained superalloy after annealing ball blast is soaked 10 ~ 2.5 hours with chemical pickling liquid at 20 ~ 70 ℃; Described alloy comprises precipitation strength type nickel base superalloy Inconel 718, Inconel 740H, solution strengthening type nickel base superalloy Inconel 617 and similarly containing aluminium superalloy;
In described pickle solution, the concentration of each material is: nitric acid 190g/L ~ 280g/L, and hydrofluoric acid 10g/L ~ 45g/L, hydrochloric acid 10g/L ~ 45g/L, hexamethylenetetramine 1 ~ 4g/L, all the other are water.
(2) again the alloy after pickling is scrubbed clean with nylon brush or roller, then wash, dry.
Pickle solution of the present invention is removed aluminium-nickel base contained high-temperature alloy surface oxide skin within the scope of 20 ~ 70 ℃, along with the speed of pickling temperature rising scale removal is accelerated.
The present invention adopts a step acid wash, does not use the pre-treatment such as sodium hydride, can on the basis of not reconstructing production line, produce; Can significantly improve pickling speed, reduce environmental pollution; Pickled surface is difficult for producing local corrosion, guarantees quality product.
Embodiment
Below in conjunction with embodiment, describe the embodiment of the acid washing method of a kind of aluminium-nickel base contained superalloy of the present invention in detail, but be not limited to following embodiment.
Embodiment mono-
The present embodiment is the pickling to Inconel 617 hot extrusion hollow forgings.
Inconel 617 hot extrusion hollow forgings after annealing ball blast are directly immersed in pickle solution and carry out pickling, and in pickle solution, the concentration of each material is: nitric acid 250g/L, and hydrofluoric acid 35g/L, hydrochloric acid 35g/L, hexamethylenetetramine 2g/L, all the other are water.Pickling temperature is 70 ℃, and the pickling residence time is 2.5 hours; The waste effective nylon brush of Inconel 617 hot extrusions after pickling is scrubbed, and then remained on surface acid solution is removed in washing, dries.After pickling, hollow forging surface scale is cleaned completely and occurs without local corrosion.
Embodiment bis-
The present embodiment is the pickling to Inconel 617 hot extrusion hollow forgings.
Inconel 617 hot extrusion hollow forgings after annealing ball blast are directly immersed in pickle solution and carry out pickling, and in pickle solution, the concentration of each material is: nitric acid 200g/L, and hydrofluoric acid 20g/L, hydrochloric acid 45g/L, hexamethylenetetramine 2g/L, all the other are water.Pickling temperature is 20 ℃, and the pickling residence time is 10 hours; The waste effective nylon brush of Inconel 617 hot extrusions after pickling is scrubbed, and then remained on surface acid solution is removed in washing, dries.After pickling, hollow forging surface scale is cleaned completely and occurs without local corrosion.
Embodiment tri-
The present embodiment is the pickling to Inconel 718 hot-rolled sheets.
Inconel 718 hot-rolled sheets after annealing ball blast are directly entered in pickle solution and carry out pickling, and in pickle solution, the concentration of each material is: nitric acid 230g/L, and hydrofluoric acid 25g/L, hydrochloric acid 30g/L, hexamethylenetetramine 3g/L, all the other are water.Pickling temperature is 50 ℃, and the pickling residence time is 5 hours; Inconel 718 hot-rolled sheets after pickling are scrubbed with roller, and then remained on surface acid solution is removed in washing, dries.After pickling, surface of steel plate oxide skin is cleaned completely and occurs without local corrosion.
Embodiment tetra-
The present embodiment is the pickling to Inconel 740H hot extrusion hollow forging super austenitic stainless steel hot-rolling plate.
Inconel 740H hot extrusion hollow forging after annealing ball blast is directly entered in pickle solution and carries out pickling, and in pickle solution, the concentration of each material is: nitric acid 280g/L, and hydrofluoric acid 45g/L, hydrochloric acid 30g/L, hexamethylenetetramine 4g/L, all the other are water.Pickling temperature is 50 ℃, and the pickling residence time is 5 hours; The waste effective nylon brush of Inconel 740H hot extrusion after pickling or roller are scrubbed, and then remained on surface acid solution is removed in washing, dries.After pickling, hollow forging surface scale is cleaned completely and occurs without local corrosion.
Claims (5)
1. the acid washing method of an aluminium-nickel base contained superalloy, described aluminium-nickel base contained superalloy comprises precipitation strength type nickel base superalloy Inconel 718, Inconel 740H, solution strengthening type nickel base superalloy Inconel 617, is characterized in that by annealing pickle solution soak acid-cleaning 10 ~ 2.5 hours at 20 ~ 70 ℃ for aluminium-nickel base contained superalloy after ball blast; In described pickle solution, the concentration of each material is: nitric acid 190g/L ~ 280g/L, and hydrofluoric acid 10g/L ~ 45g/L, hydrochloric acid 10g/L ~ 45g/L, hexamethylenetetramine 1 ~ 4g/L, all the other are water.
2. the acid washing method of a kind of aluminium-nickel base contained superalloy according to claim 1, the pickling that it is characterized in that described precipitation strength type nickel base superalloy Inconel 718 hot-rolled sheets is that Inconel 718 hot-rolled sheets after ball blast directly enter and in pickle solution, carry out pickling by annealing, in pickle solution, the concentration of each material is: nitric acid 230g/L, hydrofluoric acid 25g/L, hydrochloric acid 30g/L, hexamethylenetetramine 3g/L, all the other are water; Pickling temperature is 50 ℃, and the pickling residence time is 5 hours; Inconel 718 hot-rolled sheets after pickling are scrubbed with roller, and then remained on surface acid solution is removed in washing, dries.
3. the acid washing method of a kind of aluminium-nickel base contained superalloy according to claim 1, the pickling that it is characterized in that described precipitation strength type nickel base superalloy Inconel 740H hot extrusion hollow forging super austenitic stainless steel hot-rolling plate is that the Inconel 740H hot extrusion hollow forging after ball blast directly enters and in pickle solution, carries out pickling by annealing, in pickle solution, the concentration of each material is: nitric acid 280g/L, hydrofluoric acid 45g/L, hydrochloric acid 30g/L, hexamethylenetetramine 4g/L, all the other are water; Pickling temperature is 50 ℃, and the pickling residence time is 5 hours; The waste effective nylon brush of Inconel 740H hot extrusion after pickling or roller are scrubbed, and then remained on surface acid solution is removed in washing, dries.
4. the acid washing method of a kind of aluminium-nickel base contained superalloy according to claim 1, the pickling that it is characterized in that described solution strengthening type nickel base superalloy Inconel 617 hot extrusion hollow forgings is that the Inconel 617 hot extrusion hollow forgings after ball blast directly immerse and in pickle solution, carry out pickling by annealing, in pickle solution, the concentration of each material is: nitric acid 250g/L, hydrofluoric acid 35g/L, hydrochloric acid 35g/L, hexamethylenetetramine 2g/L, all the other are water; Pickling temperature is 70 ℃, and the pickling residence time is 2.5 hours; The waste effective nylon brush of Inconel 617 hot extrusions after pickling is scrubbed, and then remained on surface acid solution is removed in washing, dries.
5. the acid washing method of a kind of aluminium-nickel base contained superalloy according to claim 1; the pickling that it is characterized in that described solution strengthening type nickel base superalloy Inconel 617 hot extrusion hollow forgings is that the Inconel 617 hot extrusion hollow forgings after ball blast directly immerse and in pickle solution, carry out pickling by annealing; in pickle solution, the concentration of each material is: nitric acid 200g/L; hydrofluoric acid 20g/L; hydrochloric acid 45g/L; hexamethylenetetramine 2g/L, all the other are water; Pickling temperature is 20 ℃, and the pickling residence time is 10 hours; The waste effective nylon brush of Inconel 617 hot extrusions after pickling is scrubbed, and then remained on surface acid solution is removed in washing, dries.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381499A (en) * | 2016-10-26 | 2017-02-08 | 江苏省沙钢钢铁研究院有限公司 | Acid pickling method of anti-corrosion steel bars |
| CN107267989A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | A kind of chemical solution for being used to remove high-temperature alloy surface aluminum silicon infiltration layer |
| CN108760452A (en) * | 2018-05-30 | 2018-11-06 | 山东大学 | Nickel base superalloy γ ' phases show and quantitative evaluation method |
| CN111139488A (en) * | 2020-03-03 | 2020-05-12 | 广东富行洗涤剂科技有限公司 | Chemical demolding liquid for high-temperature alloy and demolding treatment method thereof |
| CN112962104A (en) * | 2021-02-02 | 2021-06-15 | 乐普（北京）医疗器械股份有限公司 | Method for removing laser processing slag on metal surface and application |
| CN113334256A (en) * | 2021-06-11 | 2021-09-03 | 贵州永红航空机械有限责任公司 | Method for cleaning nickel-based high-temperature alloy before welding |
| CN113670698A (en) * | 2021-07-12 | 2021-11-19 | 包头钢铁（集团）有限责任公司 | Austenite steel metallographic etchant and display method |
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| CN101029400A (en) * | 2007-04-02 | 2007-09-05 | 李青 | Direct chromium stainless-steel pickling agent |
| CN102181874A (en) * | 2011-03-31 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Acid-washing method of stainless steel wire for welding |
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2013
- 2013-11-12 CN CN201310560864.4A patent/CN103590057B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029400A (en) * | 2007-04-02 | 2007-09-05 | 李青 | Direct chromium stainless-steel pickling agent |
| CN102181874A (en) * | 2011-03-31 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Acid-washing method of stainless steel wire for welding |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267989A (en) * | 2016-04-08 | 2017-10-20 | 贵州黎阳航空动力有限公司 | A kind of chemical solution for being used to remove high-temperature alloy surface aluminum silicon infiltration layer |
| CN106381499A (en) * | 2016-10-26 | 2017-02-08 | 江苏省沙钢钢铁研究院有限公司 | Acid pickling method of anti-corrosion steel bars |
| CN108760452A (en) * | 2018-05-30 | 2018-11-06 | 山东大学 | Nickel base superalloy γ ' phases show and quantitative evaluation method |
| CN111139488A (en) * | 2020-03-03 | 2020-05-12 | 广东富行洗涤剂科技有限公司 | Chemical demolding liquid for high-temperature alloy and demolding treatment method thereof |
| CN112962104A (en) * | 2021-02-02 | 2021-06-15 | 乐普（北京）医疗器械股份有限公司 | Method for removing laser processing slag on metal surface and application |
| CN113334256A (en) * | 2021-06-11 | 2021-09-03 | 贵州永红航空机械有限责任公司 | Method for cleaning nickel-based high-temperature alloy before welding |
| CN113670698A (en) * | 2021-07-12 | 2021-11-19 | 包头钢铁（集团）有限责任公司 | Austenite steel metallographic etchant and display method |
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| CN103590057B (en) | 2016-01-27 |
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