CN106435652A - Rolled porous lead alloy anode and preparation process thereof - Google Patents
Rolled porous lead alloy anode and preparation process thereof Download PDFInfo
- Publication number
- CN106435652A CN106435652A CN201610995108.8A CN201610995108A CN106435652A CN 106435652 A CN106435652 A CN 106435652A CN 201610995108 A CN201610995108 A CN 201610995108A CN 106435652 A CN106435652 A CN 106435652A
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- China
- Prior art keywords
- rolling
- calendering
- anode
- porous
- alloy lead
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
Abstract
The invention relates to a rolled porous lead alloy anode and a preparation process thereof. The surface of the rolled porous lead alloy has protrusions and/or recesses. The preparation process comprises the following steps: putting a lead alloy ingot into a rolling mill, wherein protrusions or recesses are distributed on the rolling surface of the rolling mill; engaging the protrusions/recesses during rolling to obtain the rolled porous lead alloy anode with protrusions or recesses. The rolled porous anode designed and prepared by the invention has the advantages of large specific surface area of porous anode, many reaction sites and small reaction polarization, and has the advantages of high mechanical strength. The preparation process has the advantages of simplicity, low cost and easy industrialization.
Description
Technical field
The present invention relates to a kind of calendering porous alloy lead anode and its preparation technology；Belong to metal material moulding technology neck
Domain.
Background technology
Patent ZL200710034340.6 proposes a kind of Pb/Pb based alloy porous anode, and the porous lead anode is applied to
During Zinc electrolysis, anode real current density can be reduced, reduce activation polarization, reduce overpotential for oxygen evolution, so as to save
Electro-deposition power consumption.When for the non-ferrous metal electrodeposition operation such as Cu, Zn, Mn, Ni, Co, Cd, oxygen overpotential on anode can reduce by 50
～180mV.
However, Pb/Pb based alloy porous anode is due to its loose structure, mechanical strength is far below real core positive plate.In clothes
Mechanically deform is susceptible to during labour, short circuit is even resulted in, reduce anode efficiency.Low for solving porous anode mechanical strength
Problem, patent 200810031807.6,201010510065.2 and 201110306156.9 proposes several compound porous anodes,
By increasing entity laminboard layer, increase the mechanical strength of anode.
Calendering is a kind of effective way for improving the metal/alloy mechanical property of materials.Patent 201210584598.4,
201510336296.9 propose two kinds of calendering chloride plates and preparation method thereof.Calendering anode compares casting anode with higher
Mechanical strength, creep strength.Anode life can be extended, reduce labor strength.
In conjunction with understanding above, the proposition of patent applicant's creativeness is a kind of to roll porous chloride plate, and the positive plate is same
When there is the high-specific surface area of porous anode, reaction site is many, the little advantage of reaction polarization, and calendering positive pole machinery intensity height,
The good advantage of creep-resistant property.It is clear that the porous anode for proposing ZL200710034340.6 applies to roll processing i.e. again
Calendering porous anode can be obtained, but the anode of the method acquisition surface hole defect in calender line is reduced in a large number, and roll
During pore space structure destructible, easily there are a large amount of cracks in alloy network.Therefore, one step of the proposition calendering of applicant's creativeness
The technique that molding prepares calendering porous anode.The process characteristic is that roll surface is distributed with convex/concave, in calender line, raised/
Depression engagement positive plate, surface forms hole of different shapes, so as to obtain calendering porous anode.The process is simple, low cost,
Industrialization is easily realized.
Content of the invention
The present invention is directed to existing porous lead positive pole machinery low intensity, yielding shortcoming, it is proposed that a kind of calendering porous lead
Anode and preparation method thereof.Anode that is designed and preparing has the high-specific surface area of porous anode simultaneously, with reaction site
Many, reaction polarization is little, high mechanical strength, the good advantage of creep-resistant property.
A kind of calendering porous alloy lead anode of the present invention；The calendering porous alloy lead anode surface has raised and/or recessed
Fall into.
A kind of calendering porous alloy lead anode of the present invention；Described raised and/or depression and calendering porous alloy lead anode table
Face constitutes blind hole；Or described raised and/or depression is through calendering porous alloy lead anode surface.
A kind of calendering porous alloy lead anode of the present invention；Described raised and/or depression in calendering porous alloy lead anode
The density on surface is 700-5000/m2.Preferably 1500-4500/m2.
A kind of calendering porous alloy lead anode of the present invention；The surface area of the calendering porous alloy lead anode is classic flat-plate
The 145%-170% of anode surface area.In the present invention, the thickness of calendering porous alloy lead anode and the classic flat-plate anode
When thickness is identical, the surface area of the calendering porous alloy lead anode is the 145%-170% of classic flat-plate anode surface area.
A kind of calendering porous alloy lead anode of the present invention；The material of the calendering porous alloy lead anode is closed selected from Pb-Ag
One kind in gold, Pb-Ag-Ca alloy, Pb-Ag-RE alloy.
A kind of calendering porous alloy lead anode of the present invention；Single raised shape selected from tetrahedron, cuboid, square,
One kind in hemisphere, semiellipsoid, circular cone, pyramid.
A kind of calendering porous alloy lead anode of the present invention；The shape of single depression selected from tetrahedron, cuboid, square,
One kind in hemisphere, semiellipsoid, circular cone, pyramid.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；Comprise the steps：
Metal ingot blank is put into roll mill；The roll surface of the roll mill is distributed with raised or sunken；Raised/recessed during rolling
Engagement is fallen into, obtaining surface has the calendering porous alloy lead anode of projection and/or depression.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；During rolling, control total deformation be 75%～
95%.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；The metal ingot blank is casting metal ingot
Base.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；Described rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or hot rolling is cold rolling or.
The temperature of the hot rolling is 100 DEG C～280 DEG C.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；Control convex/concave shape, size and point
Cloth, it is possible to obtain different size, the hole of different distributions density.
A kind of preparation technology of calendering porous alloy lead anode of the present invention；By controlling calendering thickness and convex/concave
Dimension scale, hole can be surface blind hole, alternatively through hole.
Description of the drawings
Accompanying drawing 1 be the present invention designed by a kind of calendering porous alloy lead anode prepare schematic diagram；
Accompanying drawing 2 be the present invention designed by another calendering porous alloy lead anode prepare schematic diagram.
In figure, 1 is moulding plate, and 2 is calendar rolls, and 3 for being distributed with raised or sunken roll surface, and 4 is calendering porous anode,
5 for rolling the projection of porous alloy lead anode, and 6 for rolling the depression of porous alloy lead anode.
Specific embodiment
With the following Examples present disclosure is described in detail.
Embodiment 1
Cast alloys composition is Pb-Ag (0.6wt%).Calender is sent into after alloy temperature is down to 120 DEG C.Calendar rolls
Face be provided with positive tetrahedron (each length of side 1.5mm) projection, after calendering, anode surface square pit, distribution density be 4000/
m2.Surface area is compared classic flat-plate anode and improves 50%, and anode real current density reduces by 1 times, and anode potential about reduces 70mV.
Positive plate calendering rate is 30%, and mechanical strength is more congruent, and stack pile porous anode improves 60%.
Embodiment 2
Cast alloys composition is Pb-Ag (0.4wt%)-Ca (0.75wt.%).Alloy sends into calendering after being cooled to room temperature
Machine.Calender roll surface is provided with triangular pyramid (each length of side 1.5mm) depression, and after calendering, anode surface triangular pyramid is raised, and distribution density is
1500/m2.Surface area is compared classic flat-plate anode and improves 45%, and anode potential about reduces 60mV.Positive plate calendering rate is
40%, mechanical strength is more congruent, stack pile porous anode improves 71%.
Claims (10)
1. one kind rolls porous alloy lead anode；It is characterized in that：Described calendering porous alloy lead anode surface have projection and/or
Depression.
2. one kind according to claim 1 rolls porous alloy lead anode；It is characterized in that：Described raised and/or depression
Blind hole is constituted with calendering porous alloy lead anode surface；Or described raised and/or depression is through calendering porous alloy lead anode table
Face.
3. one kind according to claim 1 rolls porous alloy lead anode；It is characterized in that：Described raised and/or depression
Density on calendering porous alloy lead anode surface is 700-5000/m2.
4. one kind according to claim 1 rolls porous alloy lead anode；It is characterized in that：The calendering porous metal
The surface area of anode is the 145%-170% of classic flat-plate anode surface area.
5. one kind according to claim 1 rolls porous alloy lead anode；It is characterized in that：The calendering porous metal
The one kind of the material of anode in Pb-Ag alloy, Pb-Ag-Ca alloy, Pb-Ag-RE alloy.
6. one kind according to claim 1 rolls porous alloy lead anode；It is characterized in that：
The one kind of single raised shape in tetrahedron, cuboid, square, hemisphere, semiellipsoid, circular cone, pyramid；
The one kind of the shape of single depression in tetrahedron, cuboid, square, hemisphere, semiellipsoid, circular cone, pyramid.
7. a kind of prepare as described in claim 1-6 any one roll porous alloy lead anode technique；It is characterized in that bag
Include following step：
Metal ingot blank is put into roll mill；The roll surface of the roll mill is distributed with raised or sunken；During rolling, convex/concave is nibbled
Close, obtaining surface has the calendering porous alloy lead anode of projection and/or depression.
8. according to claim 7 a kind of calendering porous alloy lead anode preparation technology；It is characterized in that：During rolling,
Control total deformation is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～95% is 75%～.
9. according to claim 7 a kind of calendering porous alloy lead anode preparation technology；It is characterized in that：The lead is closed
Ingot base is casting metal ingot blank；
The rolling is that the temperature of cold rolling or hot rolling, the hot rolling is 100 DEG C～280 DEG C.
10. according to claim 7 a kind of calendering porous alloy lead anode preparation technology；It is characterized in that：Control roller
The shape, size of face convex/concave and distribution, it is possible to obtain different size, the hole of different distributions density.
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| CN201610995108.8A CN106435652A (en) | 2016-11-11 | 2016-11-11 | Rolled porous lead alloy anode and preparation process thereof |
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| CN105063669A (en) * | 2015-09-15 | 2015-11-18 | 杭州帝洛森科技有限公司 | Stripe pole plate with wrinkled structure and manufacturing method thereof |
| CN204959056U (en) * | 2015-09-15 | 2016-01-13 | 杭州帝洛森科技有限公司 | Take fold structures's stripe polar plate |
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2016
- 2016-11-11 CN CN201610995108.8A patent/CN106435652A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888305A (en) * | 1994-09-16 | 1996-04-02 | Matsushita Electric Ind Co Ltd | Manufacture of lead frame |
| CN1509347A (en) * | 2001-04-27 | 2004-06-30 | ŵ��˹���¹�˾ | Arrangement of anode for utilization in electrolysis cell |
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| CN102864469A (en) * | 2011-07-08 | 2013-01-09 | 浙江盈联科技有限公司 | Method for preparing novel composite anode plate |
| CN104328459A (en) * | 2014-12-03 | 2015-02-04 | 杭州帝洛森科技有限公司 | Embossed flattened rigidity-reinforced electrolytic electrode plate and preparation method thereof |
| CN104611609A (en) * | 2015-02-13 | 2015-05-13 | 昆明理工恒达科技股份有限公司 | Low-silver lead alloy multi-element anode material for non-ferrous metal electrodeposition and preparation method thereof |
| CN105063669A (en) * | 2015-09-15 | 2015-11-18 | 杭州帝洛森科技有限公司 | Stripe pole plate with wrinkled structure and manufacturing method thereof |
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