CN103469221A - Cleaning liquor and treatment method for removing residual magnesium alloys in die - Google Patents
Cleaning liquor and treatment method for removing residual magnesium alloys in die Download PDFInfo
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- CN103469221A CN103469221A CN2013103992292A CN201310399229A CN103469221A CN 103469221 A CN103469221 A CN 103469221A CN 2013103992292 A CN2013103992292 A CN 2013103992292A CN 201310399229 A CN201310399229 A CN 201310399229A CN 103469221 A CN103469221 A CN 103469221A
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Abstract
The invention provides cleaning liquor for removing residual magnesium alloys in a die. The cleaning liquor comprises the following components in percentage by weight: 60-240g of hydrochloric acid, 1-10g of ammonium citrate, 0.5-2g of EDTA (Ethylene Diamine Tetraacetic Acid), 5-55g of a corrosion inhibitor and 750-950g of water. Meanwhile, the invention provides a treatment method for cleaning the residual magnesium alloys by using the cleaning liquor according to the following four steps: pretreatment, cleaning, removing black films and washing by hot water. The cleaning liquor and treatment method have the benefits that damages cannot caused to the die and no influence is made on dimensional precision of the die, and configuration and operating method are simple and feasible, so that the surface roughness Ra1.0-1.5 of the die is effectively guaranteed. Referring to standards of GB8923-1988 Rusting Grade on Surface of Steel Products and Derusting Grade before Coating, according to the method, the surface rusting condition of the die is improved from grade D to grade A, and the grade Sa 3 of compressed-air blast cleaning is realized, so that one grade is raised relative to that of existing die cleaning liquor in the existing market.
Description
Technical field
The present invention relates to a kind of cleaning solution and treatment process of removing residual magnesium alloy in mould.
Background technology
Density is low owing to having for magnesium alloy, specific tenacity and the advantage such as specific modulus is high, damping and anti-electromagnetic-radiation, in fields such as Aeronautics and Astronautics, communications and transportation, electronics, electrical equipment, has broad application prospects.But up to now, to the research of extrusion technique with compound section magnesium alloy profiles still in the starting stage.
Magnesium-alloy material is with foundry goods at present, and particularly die casting is in the majority, and plastic process product is few.But the mechanical property of die casting, shape of product and size have certain limitation, so the research of wrought magnesium alloys has become the important directions in world's Magnesium Industry.Adopt extrusion forming technology can produce tubing, bar, sheet material, line, band, section bar etc., apply very wide.
Die casting is owing to mainly being comprised of moving, cover half two portions, and mold cavity inside can be opened, and cleaning is got up relatively easy.And extrusion mould is quite different, due to the restriction of project organization complexity and forming principle, the mold cavity internal cleaning quite bothers, and magnesium alloy to the mould the inside, is difficult to cleaning through some alloys adhesion after heat more in addition.
The solution preparation complexity that some enterprises use at present, complex operation, cleaning performance is not good, in cleaning process, mould is caused to certain corrosion, can cause the larger-size variation of mould through long use, shortens die life, increases production cost simultaneously.
Summary of the invention
For solving problem in above-mentioned mould cleaning, overcome above deficiency, the purpose of this invention is to provide a kind of cleaning solution and treatment process of removing residual magnesium alloy in mould, can better remove the magnesium alloy bur in magnesium alloy extrusion and die casting die cavity, can guarantee mould and die accuracy and surface quality, configuration and the working method of cleaning solution are simple simultaneously.
For achieving the above object, the technical solution adopted in the present invention is to provide a kind of cleaning solution of removing residual magnesium alloy in mould, wherein: the composition of this cleaning solution % by weight includes: hydrochloric acid 60-240g, ammonium citrate 1-10 gram, EDTA0.5-2 gram, inhibiter 5-55g, water 750-950 gram.
A kind for the treatment of process of using above-mentioned cleaning solution to remove residual magnesium alloy in mould is provided simultaneously
Effect of the present invention is to use the characteristics of the method:
1. solution preparation is simple, and the solution cost is low;
2. simple to operate, be easy to control process stabilizing;
3. with reference to " steel surface rusty degree and derusting grade before the GB8923-1988 application " standard, present method is brought up to the A rank by die surface corrosion situation by the D rank, reach compressed-air blast cleaning grade Sa3, be that the die steel surface is without visible grease and dirt, the dirt settlings such as oxide skin, iron rust and paint coating, this surface shows uniform metallic luster, with respect to the existing mould scavenging solution in present market, has improved a grade.
4. clear dilute solution of the present invention and treatment process can not cause corrosion and the damage to mould, through repeatedly cleaning and still can not affect the die size precision.Effectively guarantee that the die surface roughness reaches Ra1.0～1.5.
5. cleaning solution raw material of the present invention is easy to get, and is applicable to all magnesium alloy molds and clears up in enormous quantities.Be applicable to extruding and die casting and other all moulds in the magnesium-alloy material manufacturing processed.
The accompanying drawing explanation
The schema that Fig. 1 is residue treatment process in magnesium alloy mold of the present invention.
Embodiment
By reference to the accompanying drawings cleaning solution and the treatment process of residual magnesium alloy in removal mould of the present invention are illustrated.
The composition of this cleaning solution of the present invention % by weight includes: hydrochloric acid 60-240g, ammonium citrate 1-10 gram, EDTA0.5-2 gram, inhibiter 5-55g, water 750-950 gram.Described inhibiter is: H213 or H214, one of N585.
The treatment process that the above-mentioned cleaning solution of use of the present invention is removed residual magnesium alloy in mould includes following steps:
(1) pre-treatment, first dispose the projection that adheres to outside, mold diversion hole and internal area >=3cm2, to reduce the consumption of described cleaning solution;
(2) clean, mould is put into to the described cleaning solution that the temperature configured is 20-100 ℃ and soak 0.5-2 hour;
(3) remove black film, water rinses the black film of die surface is washed;
(4) hot water wash, put into mould in 80-100 ℃ of hot water and clean, and with the heat produced, mould dried.
Die surface roughness Ra 1.0～1.5 after the natural airing of step (4), die surface corrosion situation is brought up to the A level by the D level, reaches compressed-air blast cleaning grade Sa3, and die surface is without visible dirt settling, die surface shows uniform metallic luster, for the not impact of die size precision.
Described dirt settling refers to grease or dirt or oxide skin or iron rust or paint coating.
The inhibiter model is: H213 or H214, buy certainly: Shenzhen City Dikai New Technology Co., Ltd..N585, buy certainly: Zibo China promise water treatment company limited.
Embodiment mono-
At first in step (1), extrusion mould is carried out to pre-treatment, for example with hammer or other equipment, the magnesium alloy of bulk in tap hole is dug out or rushed out, to reduce the consumption of magnesium alloy to treatment solution.
Next pretreated mould is put into to the scavenging solution configured in step (2), magnesium alloy residual in mould is cleaned up.
In the present embodiment, in cleaning magnesium alloy mold used, the strength of solution of residue is 80 milliliters of hydrochloric acid, ammonium citrate 2 grams, EDTA0.8 gram, inhibiter 20g, and water is 880g.Rinse liquid temperature is 50 ℃, and scavenging period was at 1 hour.
In step (3), the mould cleaned up is rinsed well surperficial black film with tap water.
Water the black film of die surface is rinsed well after by step (4) with 100 ℃ of hot water stamping dies 30 minutes, allow the heat of mould generation that himself is dried.
Embodiment bis-
In this embodiment, identical with appeal the first embodiment to the treatment process of residue in the cleaning magnesium alloy mold.Below just only the difference with the first embodiment is described.
In this embodiment, in the clean of step (2), the concentration of cleaning use is 100 milliliters of hydrochloric acid, ammonium citrate 4 grams, EDTA1.2 gram, inhibiter 18g, and water is 950g.Rinse liquid temperature is 60 ℃, and scavenging period was at 30 minutes.
Use hot water injection's mould in step (4), water temperature used is controlled at 80 ℃, and the time was at 40 minutes.
Embodiment 3
In the present embodiment, in cleaning magnesium alloy mold used, the strength of solution of residue is hydrochloric acid 60g, ammonium citrate 1 gram, EDTA0.5 gram, inhibiter 1g, and water is 800g.Rinse liquid temperature is 100 ℃, and scavenging period was at 1.5 hours.
In step (3), the mould cleaned up is rinsed well surperficial black film with tap water.
Water the black film of die surface is rinsed well after by step (4) with 100 ℃ of hot water stamping dies 40 minutes, allow the heat of mould generation that himself is dried.
Embodiment 4
In the present embodiment, in cleaning magnesium alloy mold used, the strength of solution of residue is hydrochloric acid 20g, ammonium citrate 8 grams, EDTA1.8 gram, inhibiter 30g, and water is 750g.Rinse liquid temperature is 80 ℃, and scavenging period was at 2 hours.
In step (3), the mould cleaned up is rinsed well surperficial black film with tap water.
Water the black film of die surface is rinsed well after by step (4) with 80 ℃ of hot water stamping dies 30 minutes, allow the heat of mould generation that himself is dried.
Embodiment 5
In the present embodiment, in cleaning magnesium alloy mold used, the strength of solution of residue is hydrochloric acid 150g, ammonium citrate 10 grams, EDTA2 gram, inhibiter 55g, and water is 900g.Rinse liquid temperature is 20 ℃, and scavenging period was at 1 hour.
In step (3), the mould cleaned up is rinsed well surperficial black film with tap water.
Water the black film of die surface is rinsed well after by step (4) with 90 ℃ of hot water stamping dies 40 minutes, allow the heat of mould generation that himself is dried.
It is as follows that mould after the scavenging solution formed through difference in embodiment 1-5 is cleaned is detected and obtained the monitoring data statistics.
1, die surface roughness measurement.
Through roughmeter Measurement die surfaceness, after the scavenging solution cleaning die on existing market, surface quality is Ra1.8～2.5.Adopting the mould after present method is cleaned, measure by roughmeter, is Ra1.0, Ra1.2, Ra1.0, Ra1.6, Ra1.3 from the die surface roughness of embodiment 1-5, effectively guarantees the die surface specification of quality.
2, die surface corrosion situation detects.
With reference to " steel surface rusty degree and derusting grade before the GB8923-1988 application " normal pictures contrast, use the mould of this scavenging solution in embodiment 1-5, the surface corrosion situation is brought up to and is cleaned rear A rank by D rank before cleaning, reach compressed-air blast cleaning grade Sa3(die steel surface after surface derusting without visible grease and dirt, the dirt settlings such as oxide skin, iron rust and paint coating, this surface shows uniform metallic luster).And contrast with the scavenging solution cleaning die on existing market, existing market scavenging solution die surface corrosion situation is brought up to and is cleaned rear B rank by D rank before cleaning.Present method can improve a grade by just face corrosion situation, has effectively cleaned die surface.
3, die size cleans the dimensional measurement of front and back.
Through micrometer callipers, measure, in above embodiment mould before cleaning with clean after all not variations of die size, so this scavenging solution and purging method can effectively guarantee the die size precision.
In addition, in the above embodiment of the present invention, carried out illustration for the time of cleaning and temperature etc. with the form of concrete numerical value, yet the invention is not restricted to this, as long as can realize the purpose of cleaning and drying.
Although describe the present invention with reference to example, should be appreciated that and the invention is not restricted to the disclosed embodiments.Should give the widest explanation to the scope of claims, so that it contains all modification, equivalent structure and function.
Claims (5)
1. a cleaning solution of removing residual magnesium alloy in mould, it is characterized in that: the composition of this cleaning solution % by weight includes: hydrochloric acid 60-240g, ammonium citrate 1-10 gram, EDTA0.5-2 gram, inhibiter 5-55g, water 750-950 gram.
2. cleaning solution according to claim 1, it is characterized in that: described inhibiter is: H213 or H214, one of N585.
3. a right to use requires 1 described cleaning solution to remove the treatment process of residual magnesium alloy in mould, and the method includes following steps:
(1) pre-treatment, will adhere to outside, mold diversion hole and internal area>=3cm
2projection first dispose, to reduce the consumption of described cleaning solution;
(2) clean, mould is put into to the described cleaning solution that the temperature configured is 20-100 ℃ and soak 0.5-2 hour;
(3) remove black film, water rinses the black film of die surface is washed;
(4) hot water wash, put into mould in 80-100 ℃ of hot water and clean, and with the heat produced, mould dried.
4. according to the treatment process described in claim 3, it is characterized in that: the die surface roughness Ra 1.0～1.5 after the natural airing of step (4), die surface corrosion situation is brought up to the A level by the D level, reach compressed-air blast cleaning grade Sa3, die surface is without visible dirt settling, die surface shows uniform metallic luster, for the not impact of die size precision.
5. according to the treatment process described in claim 4, it is characterized in that: described dirt settling refers to grease or dirt or oxide skin or iron rust or paint coating.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859076A (en) * | 2015-05-09 | 2015-08-26 | 苏州爱友电器有限公司 | Mould washing method and mould washing machine |
| CN105132194A (en) * | 2015-09-23 | 2015-12-09 | 尚成荣 | Cleaning agent for clearing oxide layer from surface of diesel engine oil tank processing mold |
| CN105220091A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state Al-Li alloy thin plate |
| CN105215121A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium alloy sheet |
| CN105215124A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium alloy sheet |
| CN105215123A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium lithium alloy thin plate |
| CN105215125A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium alloy sheet |
| CN105215122A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium alloy sheet |
| CN105344786A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial aging-state aluminum alloy sheet |
| CN105344779A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial ageing aluminum alloy thin plate |
| CN105344780A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial aging-state aluminum alloy sheet |
| CN107779876A (en) * | 2016-08-29 | 2018-03-09 | 镇江佳鑫精工设备有限公司 | A kind of metal die cleaning agent performance test methods |
| CN115090593A (en) * | 2022-06-30 | 2022-09-23 | 西安科技大学 | Mould washs and stoving integration equipment for test piece |
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Cited By (16)
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| CN104859076A (en) * | 2015-05-09 | 2015-08-26 | 苏州爱友电器有限公司 | Mould washing method and mould washing machine |
| CN105132194A (en) * | 2015-09-23 | 2015-12-09 | 尚成荣 | Cleaning agent for clearing oxide layer from surface of diesel engine oil tank processing mold |
| CN105344786A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial aging-state aluminum alloy sheet |
| CN105344779A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial ageing aluminum alloy thin plate |
| CN105215124A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium alloy sheet |
| CN105215123A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium lithium alloy thin plate |
| CN105215125A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium alloy sheet |
| CN105215122A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium alloy sheet |
| CN105220091A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state Al-Li alloy thin plate |
| CN105215121A (en) * | 2015-10-12 | 2016-01-06 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium alloy sheet |
| CN105344780A (en) * | 2015-10-12 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | Forming method for artificial aging-state aluminum alloy sheet |
| CN105220091B (en) * | 2015-10-12 | 2019-06-28 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium lithium alloy thin plate |
| CN105215123B (en) * | 2015-10-12 | 2018-06-05 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of natrual ageing state aluminium lithium alloy thin plate |
| CN105215124B (en) * | 2015-10-12 | 2018-06-05 | 中国航空工业集团公司北京航空材料研究院 | A kind of manufacturing process of artificial aging state aluminium alloy sheet |
| CN107779876A (en) * | 2016-08-29 | 2018-03-09 | 镇江佳鑫精工设备有限公司 | A kind of metal die cleaning agent performance test methods |
| CN115090593A (en) * | 2022-06-30 | 2022-09-23 | 西安科技大学 | Mould washs and stoving integration equipment for test piece |
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Application publication date: 20131225 |