CN105386104A - Manufacturing method of inside-outside nickel-phosphorus alloy electroplating coal gun - Google Patents
Manufacturing method of inside-outside nickel-phosphorus alloy electroplating coal gun Download PDFInfo
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- CN105386104A CN105386104A CN201410448031.3A CN201410448031A CN105386104A CN 105386104 A CN105386104 A CN 105386104A CN 201410448031 A CN201410448031 A CN 201410448031A CN 105386104 A CN105386104 A CN 105386104A
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- nickel
- plating
- rifle
- electroplating
- phosphorus alloy
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Abstract
The present invention relates to a manufacturing method of an inside-outside nickel-phosphorus alloy electroplating coal gun. The method is characterized by comprising: 1) carrying out pre-nickel-plating on a gun body; 2) carrying out an electroplating treatment on the gun body; and 3) carrying out a heat treatment on the plated member so as to complete the production of the strengthened coal gun. According to the present invention, the method has characteristics of simple process, low cost, and electroplating solution component uniformity ensuring.
Description
Technical field
The present invention relates to a kind of electro-plating method, specifically a kind of manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle, belongs to metal alloy electroplating technology field.
Background technology
Current, pulverized coal injection has become the important technical that blast furnace ironmaking realizes energy-saving and emission-reduction, along with the raising of Coal Injection Rate at BF and the change of relevant working condition, the material wear and corrosion behavior of general superalloy coal spouting gun has been difficult to the needs meeting blast fumance, particularly for the coal rifle front end in blast-furnace tuyere inside, because temperature is high, be generally more than 1200 DEG C, the coal dust be easy to by flowing is worn out, thus affects pulverized coal injection.The deficiency of coal rifle front end high temperature wearable anti-corrosion performance has become the common defects of industry.In order to solve this technical problem, also have enhancing electric plating method in prior art, but the ubiquitous problem of these methods is as follows: 1) cost is higher, technique is comparatively complicated; 2) stability of electroplating and homogeneity poor, therefore, solve above-mentioned technical problem in the urgent need to a kind of new technical scheme.
Summary of the invention
The present invention is just for the technical problem existed in prior art, and provide a kind of manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle, the method technique is simple, and cost is lower, and ensure that the homogeneity of electroplating bath components.
To achieve these goals, the technical solution used in the present invention is, a kind of manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle, is characterized in that, said method comprising the steps of, 1) nickel preplating is carried out to rifle body; 2) electroplating processes is carried out to rifle body; 3) plating piece is heat-treated, complete the making of strengthening coal rifle.
As a modification of the present invention, described step 1) carries out nickel preplating to rifle body, and concrete operations are as follows, first plates thin layer nickel at steel pipe inner wall, and then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V.
As a modification of the present invention, described step 2) to carry out electroplating processes detailed process to rifle body as follows, 21) electroplating solution preparation, described electroplating solution formula is as follows, single nickel salt 300 ~ 400g/L, nickelous chloride 40 ~ 45g/L, boric acid 40 ~ 50g/L, ortho phosphorous acid nickel 70g/L, electroplating temperature: 50 DEG C, plating solution pH value: 3-4, electric current: 0.5-0.6A; 22) electroplating solution electrode is arranged, and gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, and gun barrel outer electrode and the external wall spacing of rifle are the 4-6 times of axle center electrode and inwall spacing, and outer electrode arranges 4-6 root, is roundedly uniformly distributed.In this technical scheme,
As a modification of the present invention, described step 3) is heat-treated plating piece, and concrete operations are as follows, by plating piece in inert atmosphere stove, after being warming up to 500 DEG C respectively by 2 DEG C/min heat-up rate, insulation 2h, then be cooled to room temperature by 1 DEG C/min cooling rate, finally complete strengthening coal rifle and make.
As a modification of the present invention, be also provided with the micropump recycle system in the electroplating solution of described step 2, described micropump import, in the bottom in plating pond, exports on plating top, pond.
Relative to prior art, beneficial effect of the present invention is as follows: 1) this technical scheme be based upon great many of experiments basis on constantly sum up and obtain, and technique is simple, and easy running cost is lower; 2) the inside and outside Ni-P alloy enhanced layer coal rifle that this invention is obtained is compared with common coal rifle, its hardness, the indexs such as wear resistance are significantly improved, and show after blast fumance rig-site utilization, use the coal rifle life-span of the present invention to improve more than 3 times than common coal rifle, economic and social profit is remarkable.
Accompanying drawing explanation
Fig. 1 is electrode structure schematic diagram of the present invention;
Fig. 2 is plating fluid circulating system structural representation of the present invention.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with accompanying drawing, the invention will be further described and introduce.
embodiment 1:
1) carry out nickel preplating to rifle body, concrete operations are as follows, first plate thin layer nickel at steel pipe inner wall, and then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V;
2) at single nickel salt 300g/L, nickelous chloride 45g/L, boric acid 40g/L, inferior sodium phosphate 70g/L, with hydrochloric acid (or Sodium Fluoride) regulator solution pH value to 3 ~ 4, after bath stability 30min, shown in Figure 1, in order to realize both sides uniformly-coating strengthening layer simultaneously inside and outside coal rifle, being uniformly distributed of inner electric field and outer electric field must be ensured, being uniformly distributed of power line, guarantees that inner electric field and outer electric field power is equal.So the present invention is in electroplating process, its plating piece bottom plate is fixed, and the feature in arrangement of electrodes is, gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, at utmost to meet the even of applied electric field.This step is in the determination of the magnitude setting of outer electrode, and derivation is as follows: according to electrical forces formula: F=E.q, electric field strength E is equal, and electric charge q is equal, then electrical forces F is just equal; And electric field strength E=U/d:U is voltage, d is interelectrode distance, and formula is known thus, and when voltage U one timing, electric field strength E interelectrode distance d is inversely proportional to.Suppose that dispatch from foreign news agency field force is F
outward, internal electric field power is F
in, outer electrode number is n, and the electrical forces that every root outer electrode produces is F
i, then: F
outward=nF
i(i=2.....n), at F
outward=F
intime again according to the spacing of internal and external electrode and rifle body electrode, determine outer electrode quantity n.In the present invention, gun barrel outer electrode and the external wall spacing of rifle be the 4-6 of axle center electrode and inwall spacing doubly, so outer electrode arranges 4-6 root, to be roundedly uniformly distributed, to guarantee the even of interval angles.Also need to ensure that total current value reaches setting electric current in actual production, peripheral electrode is in parallel, can ensure that in gun barrel, outside electroplating Ni-P alloy coating is even like this;
3) put into the plating of Ni25Cr20 compo pipe plating piece 42h, electroplating current 0.5A in the plating solution, produce interior external Ni-P alloy enhanced layer coal spouting gun, after 500 DEG C of thermal treatments, obtain coal rifle sample.
Sample 1:Ni-P coating:
Thickness: in: it is 318 μm, outer: 300 μm,
P content 13.5%,
Hardness 843HV,
Sticking power 90,
Wear rate <5*10-5g/m.
embodiment 2:
1) carry out nickel preplating to rifle body, concrete operations are as follows, first plate thin layer nickel at steel pipe inner wall, and then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V;
2) at single nickel salt 350g/L, nickelous chloride 48g/L, boric acid 42g/L, inferior sodium phosphate 70g/L, with hydrochloric acid (or Sodium Fluoride) regulator solution pH value to 3 ~ 4, after bath stability 30min, shown in Figure 1, in order to realize both sides uniformly-coating strengthening layer simultaneously inside and outside coal rifle, being uniformly distributed of inner electric field and outer electric field must be ensured, being uniformly distributed of power line, guarantees that inner electric field and outer electric field power is equal.So the present invention is in electroplating process, its plating piece bottom plate is fixed, and the feature in arrangement of electrodes is, gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, at utmost to meet the even of applied electric field.This step is in the determination of the magnitude setting of outer electrode, and derivation is as follows: according to electrical forces formula: F=E.q, electric field strength E is equal, and electric charge q is equal, then electrical forces F is just equal; And electric field strength E=U/d:U is voltage, d is interelectrode distance, and formula is known thus, and when voltage U one timing, electric field strength E interelectrode distance d is inversely proportional to.Suppose that dispatch from foreign news agency field force is F
outward, internal electric field power is F
in, outer electrode number is n, and the electrical forces that every root outer electrode produces is F
i, then: F
outward=nF
i(i=2.....n), at F
outward=F
intime again according to the spacing of internal and external electrode and rifle body electrode, determine outer electrode quantity n.In the present invention, gun barrel outer electrode and the external wall spacing of rifle be the 4-6 of axle center electrode and inwall spacing doubly, so outer electrode arranges 4-6 root, to be roundedly uniformly distributed, to guarantee the even of interval angles.Also need to ensure that total current value reaches setting electric current in actual production, peripheral electrode is in parallel, can ensure that in gun barrel, outside electroplating Ni-P alloy coating is even like this;
3) put into the plating of Ni25Cr20 compo pipe plating piece 42h, electroplating current 0.55A in the plating solution, produce interior external Ni-P alloy enhanced layer coal spouting gun, after 500 DEG C of thermal treatments, obtain coal rifle sample.
Sample 2:Ni-P coating:
Thickness: in: it is 330 μm, outer: 312 μm,
P content 13.3%,
Hardness 836HV,
Sticking power 92,
Wear rate <5*10-5g/m.
embodiment 3:
1) carry out nickel preplating to rifle body, concrete operations are as follows, first plate thin layer nickel at steel pipe inner wall, and then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V;
2) at single nickel salt 400g/L, nickelous chloride 50g/L, boric acid 45g/L, inferior sodium phosphate 70g/L, with hydrochloric acid (or Sodium Fluoride) regulator solution pH value to 3 ~ 4, after bath stability 30min, shown in Figure 1, in order to realize both sides uniformly-coating strengthening layer simultaneously inside and outside coal rifle, being uniformly distributed of inner electric field and outer electric field must be ensured, being uniformly distributed of power line, guarantees that inner electric field and outer electric field power is equal.So the present invention is in electroplating process, its plating piece bottom plate is fixed, and the feature in arrangement of electrodes is, gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, at utmost to meet the even of applied electric field.This step is in the determination of the magnitude setting of outer electrode, and derivation is as follows: according to electrical forces formula: F=E.q, electric field strength E is equal, and electric charge q is equal, then electrical forces F is just equal; And electric field strength E=U/d:U is voltage, d is interelectrode distance, and formula is known thus, and when voltage U one timing, electric field strength E interelectrode distance d is inversely proportional to.Suppose that dispatch from foreign news agency field force is F
outward, internal electric field power is F
in, outer electrode number is n, and the electrical forces that every root outer electrode produces is F
i, then: F
outward=nF
i(i=2.....n), at F
outward=F
intime again according to the spacing of internal and external electrode and rifle body electrode, determine outer electrode quantity n.In the present invention, gun barrel outer electrode and the external wall spacing of rifle be the 4-6 of axle center electrode and inwall spacing doubly, so outer electrode arranges 4-6 root, to be roundedly uniformly distributed, to guarantee the even of interval angles.Also need to ensure that total current value reaches setting electric current in actual production, peripheral electrode is in parallel, can ensure that in gun barrel, outside electroplating Ni-P alloy coating is even like this;
3) put into the plating of Ni25Cr20 compo pipe plating piece 42h, electroplating current 0.6A in the plating solution, produce interior external Ni-P alloy enhanced layer coal spouting gun, after 500 DEG C of thermal treatments, obtain coal rifle sample.
Sample 3:Ni-P coating:
Thickness: in: it is 338 μm, outer: 320 μm,
P content 13.1%,
Hardness 828HV,
Sticking power 95,
Wear rate <5*10-5g/m,
Coal rifle matrix (common coal rifle) 0Cr25Ni20 high temperature steel, hardness 200HV, wear rate <5*10-2g/m.
embodiment 4:
1) carry out nickel preplating to rifle body, concrete operations are as follows, first plate thin layer nickel at steel pipe inner wall, and then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V;
2) at single nickel salt 380g/L, nickelous chloride 46g/L, boric acid 43g/L, inferior sodium phosphate 70g/L, with hydrochloric acid (or Sodium Fluoride) regulator solution pH value to 3 ~ 4, after bath stability 30min, shown in Figure 1, in order to realize both sides uniformly-coating strengthening layer simultaneously inside and outside coal rifle, being uniformly distributed of inner electric field and outer electric field must be ensured, being uniformly distributed of power line, guarantees that inner electric field and outer electric field power is equal.So the present invention is in electroplating process, its plating piece bottom plate is fixed, and the feature in arrangement of electrodes is, gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, at utmost to meet the even of applied electric field.This step is in the determination of the magnitude setting of outer electrode, and derivation is as follows: according to electrical forces formula: F=E.q, electric field strength E is equal, and electric charge q is equal, then electrical forces F is just equal; And electric field strength E=U/d:U is voltage, d is interelectrode distance, and formula is known thus, and when voltage U one timing, electric field strength E interelectrode distance d is inversely proportional to.Suppose that dispatch from foreign news agency field force is F
outward, internal electric field power is F
in, outer electrode number is n, and the electrical forces that every root outer electrode produces is F
i, then: F
outward=nF
i(i=2.....n), at F
outward=F
intime again according to the spacing of internal and external electrode and rifle body electrode, determine outer electrode quantity n.In the present invention, gun barrel outer electrode and the external wall spacing of rifle be the 4-6 of axle center electrode and inwall spacing doubly, so outer electrode arranges 4-6 root, to be roundedly uniformly distributed, to guarantee the even of interval angles.Also need to ensure that total current value reaches setting electric current in actual production, peripheral electrode is in parallel, can ensure that in gun barrel, outside electroplating Ni-P alloy coating is even like this;
3) put into the plating of Ni25Cr20 compo pipe plating piece 42h, electroplating current 0.55A in the plating solution, produce interior external Ni-P alloy enhanced layer coal spouting gun, after 500 DEG C of thermal treatments, obtain coal rifle sample.
Sample 4:Ni-P coating:
Thickness: in: it is 335 μm, outer: 315 μm,
P content 13.2%,
Hardness 835HV,
Sticking power 93,
Wear rate <5*10-5g/m.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, equivalents done on the basis of technique scheme or the alternative scope all falling into the claims in the present invention and protect.
Claims (5)
1. inside and outside, a manufacture method for nickel-phosphorus alloy plating coal rifle, is characterized in that, said method comprising the steps of, 1) nickel preplating is carried out to rifle body; 2) electroplating processes is carried out to rifle body; 3) plating piece is heat-treated, complete the making of strengthening coal rifle.
2. the manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle as claimed in claim 1, it is characterized in that, described step 1) carries out nickel preplating to rifle body, concrete operations are as follows, first plate thin layer nickel at steel pipe inner wall, then at nickel-phosphorus alloy plating, make the close and firm more that coating and matrix combine, the plating solution of nickel preplating is NiSO
47H
2o and HCl, fills a prescription as NiSO
47H
2o200g/L, HCl are 160g/L, and temperature is 20 DEG C-30 DEG C, and the time is 5-8min, and electric current is 4.5A, and voltage is 1-2V.
3. the manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle as claimed in claim 2, it is characterized in that, described step 2) to carry out electroplating processes detailed process to rifle body as follows, and 21) electroplating solution preparation, described electroplating solution formula is as follows, single nickel salt 300 ~ 400g/L, nickelous chloride 40 ~ 45g/L, boric acid 40 ~ 50g/L, ortho phosphorous acid nickel 70g/L, electroplating temperature: 50 DEG C, plating solution pH value: 3-4, electric current: 0.5-0.6A; 22) electroplating solution electrode is arranged, and gun barrel internal axis arranges interior electrode, and outer electrode adopts circular rings around layout, and gun barrel outer electrode and the external wall spacing of rifle are the 4-6 times of axle center electrode and inwall spacing, and outer electrode arranges 4-6 root, is roundedly uniformly distributed.
4. the manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle as claimed in claim 3, it is characterized in that, described step 3) is heat-treated plating piece, concrete operations are as follows, by plating piece in inert atmosphere stove, after being warming up to 500 DEG C respectively by 2 DEG C/min heat-up rate, insulation 2h, then be cooled to room temperature by 1 DEG C/min cooling rate, finally complete strengthening coal rifle and make.
5. the manufacture method of inside and outside nickel-phosphorus alloy plating coal rifle as claimed in claim 4, is characterized in that, be also provided with the micropump recycle system in the electroplating solution of described step 2, and described micropump import, in the bottom in plating pond, exports on plating top, pond.
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|---|---|---|---|
| CN201410448031.3A CN105386104B (en) | 2014-09-04 | 2014-09-04 | A kind of manufacturing method of inside and outside nickel-phosphorus alloy plating coal rifle |
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|---|---|---|---|
| CN201410448031.3A CN105386104B (en) | 2014-09-04 | 2014-09-04 | A kind of manufacturing method of inside and outside nickel-phosphorus alloy plating coal rifle |
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| CN105386104B CN105386104B (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191942A (en) * | 2016-07-29 | 2016-12-07 | 成都立威讯科技有限公司 | A kind of rhodanizing technique of semiconductor chip nickel preplating |
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|---|---|---|---|---|
| US4908280A (en) * | 1989-07-10 | 1990-03-13 | Toyo Kohan Co., Ltd. | Scratch and corrosion resistant, formable nickel plated steel sheet, and manufacturing method |
| CN1401823A (en) * | 2002-09-30 | 2003-03-12 | 山东鲁宏塑窗机械集团总公司五金电镀厂 | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe |
| CN103982142A (en) * | 2014-05-14 | 2014-08-13 | 胜利油田金岛实业有限责任公司 | Electroplated amorphous state nickel-based alloy corrosion-resistant wear-resistant oil pipe |
-
2014
- 2014-09-04 CN CN201410448031.3A patent/CN105386104B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908280A (en) * | 1989-07-10 | 1990-03-13 | Toyo Kohan Co., Ltd. | Scratch and corrosion resistant, formable nickel plated steel sheet, and manufacturing method |
| CN1401823A (en) * | 2002-09-30 | 2003-03-12 | 山东鲁宏塑窗机械集团总公司五金电镀厂 | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe |
| CN103982142A (en) * | 2014-05-14 | 2014-08-13 | 胜利油田金岛实业有限责任公司 | Electroplated amorphous state nickel-based alloy corrosion-resistant wear-resistant oil pipe |
Non-Patent Citations (3)
| Title |
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| 张允诚等: "《电镀手册》", 31 January 2007, 国防工业出版社 * |
| 李异等: "《电镀前处理与后处理》", 31 January 2009, 化学工业出版社 * |
| 苏枫等: ""镍磷非晶态镀层的研究"", 《天津城市建设学院学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191942A (en) * | 2016-07-29 | 2016-12-07 | 成都立威讯科技有限公司 | A kind of rhodanizing technique of semiconductor chip nickel preplating |
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