CN100523302C - High-silicon cast iron battery lead plate and preparation method thereof - Google Patents
High-silicon cast iron battery lead plate and preparation method thereof Download PDFInfo
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- CN100523302C CN100523302C CNB2007100618358A CN200710061835A CN100523302C CN 100523302 C CN100523302 C CN 100523302C CN B2007100618358 A CNB2007100618358 A CN B2007100618358A CN 200710061835 A CN200710061835 A CN 200710061835A CN 100523302 C CN100523302 C CN 100523302C
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Abstract
The invention relates to a high silicon cast iron electrode board and a method of preparing the electrode board. The high silicon cast iron electrode board is a long flat board or a bent board, and characterized in that a stainless steel net woven by stainless steel ribs or with through holes spread is arranged in the electrode board. The method of preparing the high silicon cast iron electrode board includes: (1)the along is melted with chemical components (weight percent): C: 0.2 to 0.8percent, Si: 13.0 to 18.0percent, Mn: 0.3 to 0.8percent, S: less than 0.03percent, P: less than 0.03percent, RE: 0.01 to 0.05percent, and the rest is unavoidable impurities and Fe, and sent out of the furnace. (2)modification. (3)casting and forming: The stainless steel net is fixed in a foam plastic mould or a profile cavity to cast. (4)heat treatment: a cast part is put into a heat treatment furnace for 2 to 4 hours temperature preserving, cooled to below 100DEG C in the heat treatment furnace and taken out. The electrode board prepared with the method of preparing the high silicon cast iron electrode board has high corrosion resistance, high mechanical performance and good conductivity.
Description
Technical field
The present invention relates to a kind of high silicon cast iron electroplax plate and preparation method thereof.
Background technology
Along with industrial expansion, more and more higher for the materials demand on the equipment that can be used to be exposed to strong corrosive environment, high silicon cast iron is exactly according to one of material of this demand exploitation.The Fe-Si-C casting alloy of the massfraction of silicon between 10%-18% is called high silicon cast iron.High silicon cast iron is because precious metals such as corrosion resisting property is good, cost is low, production process is simple, saving nickel chromium triangle are specially adapted to make the parts that contact with various strong corrosive mediums that bear less static load.High silicon corrosiron spare can be used for the required anti-corrosion foundry goods of industry such as chemical industry, oil, chemical fibre, metallurgy, national defence, also can be used for making the supplementary anode foundry goods of impressed current cathodic protection.But, high silicon cast iron is owing to its natural characteristics determines, exist the shortcoming that intensity and impelling strength are low, hardness is high, fragility is big, thermal conductivity is little and the coefficient of expansion is big, so that when Foundry Production and application, be easy to produce defectives such as shrinkage porosite, shrinkage cavity and crackle, can not stand violent temperature variation and bear heavy duty, mechanical workout is difficulty relatively, thereby has limited the promotion and application of high silicon foundry goods.Now, high silicon cast iron spare mainly is confined in the middle-size and small-size foundry goods, and the production of massive casting is subjected to the influence of plasticity, defective and processing characteristics, and research does not seldom have the report of successfully producing and using large-scale high silicon cast iron spare.Particularly existing cold rolled stainless steel sheet pickling tank is bigger with the physical dimension of battery lead plate, belong to large-scale tabular foundry goods, general overall size is: lower electrode plate 2523 * 350 * 420mm, electric pole plate 2523 * 350 * 690mm, the casting difficulty is bigger, and poor mechanical property behind the global formation, ruptures easily in transportation, installation, use, so work-ing life is short, is generally 6～10 months.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing silicon cast iron battery lead plate, the invention provides a kind of be not easy to send out fracture, the silicon cast iron battery lead plate of long service life.A kind of preparation method of silicon cast iron battery lead plate is provided simultaneously.
Design of the present invention is netted reinforcing rib to be set in pickling in silicon cast iron battery lead plate, improved the mechanical property of high silicon iron-base alloy, overcome the intensity of high silicon cast iron and the shortcoming that impelling strength is low, hardness is high, fragility is big, guaranteed solidity to corrosion and the electroconductibility of pickling simultaneously with silicon cast iron battery lead plate.
The feature of silicon cast iron battery lead plate of the present invention is that the stainless steel steel mesh is being set in battery lead plate, and the stainless steel steel mesh can be weaved into stainless reinforcing bar, and the diameter of reinforcing bar is Φ 5mm-Φ 10mm, and the spacing between the two adjacent reinforcing bars is 40mm-100mm, (rectangle or rhombus); The stainless steel plate of the also available distribution through hole of stainless steel steel mesh, stainless steel thickness of slab 5mm-12mm, the diameter of through hole is Φ 10mm-Φ 50mm, the physical dimension of stainless (steel) wire and the size of battery lead plate adapt, and less than the size of battery lead plate, general width is than the narrow 20mm-120mm of battery lead plate, length is than the little 40mm-500mm of battery lead plate, during mould assembling, the stainless steel steel mesh is fixed on the inner suitable position of die cavity, high silicon iron-base alloy casts in outside the stainless steel mesh.
Silicon cast iron battery lead plate of the present invention is divided into flat board and two kinds of bent plates, at the two ends of plate electrode plate the energising connection hole is arranged, and flat board is a long strip shape, and the stainless steel steel mesh also is a long strip shape.The silicon cast iron battery lead plate of bent plate has two side plates and a top board, two side plates and a top board are the bending plate that one constitutes ∏ shape, respectively there is a base plate that outwards bends in bottom at two side plates, its longitudinal profile is handle-shaped, the longitudinal profile of stainless steel rebar net also is handle-shaped, and the energising connection hole is arranged on base plate.Silicon cast iron battery lead plate is made up of electric pole plate and lower electrode plate, the height of the electric pole plate side plate of bent plate is less than the side plate of lower electrode plate, differ between the two and be not less than 200mm, generally be not more than 400mm, interval between the biside plate outer side of lower electrode plate and the side plate inboard of electric pole plate is between 20-50mm, electric pole plate places on the lower electrode plate, separates with insulcrete between electric pole plate and the lower electrode plate.
The chemical ingredients of the high silicon iron-base alloy of silicon cast iron battery lead plate of the present invention (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.2%-0.8% Si:13.0%-18.0% Mn:0.3%-0.8% S＜0.03%P＜0.03% RE:0.01%-0.05%.
The optimum chemical composition of the high silicon iron-base alloy of silicon cast iron battery lead plate of the present invention (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.35% Si:16.3% Mn:0.55% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Chemical ingredients to the ferrous alloy of silicon cast iron battery lead plate describes below.
When the weight percentage of silicon reached 14.5%, under suitable ambient condition, its surface can form the SiO of one deck densification
2Protective membrane, corrosion resisting property sharply rises, and corrosion resisting property improves along with the increase of silicon content, but too high silicon content can generate the stable fragility phase (Fe that is situated between
5Si
2), make material more crisp, so the high-content of silicon can reach 18.0%.But in order to obtain good solidity to corrosion, the only low again mechanical property that reduces, the silicone content in the high silicon iron-base alloy is selected in 14.50%-18.0%.
Silicone content in the anti-corrosion ferrous alloy of high silicon is high more, and carbon content should be low more.Reasonably carbon content is equivalent to the hypoeutectic composition or the eutectic composition of the anti-corrosion ferrous alloy of this high silicon.If when carbon content substantially exceeds eutectic composition, can separate out thick graphite, cause serious tissue looseness.At this moment because the dissolving power of silicon in alpha ferrite is stronger than carbon, and silicon quickens the diffusion of carbon again, therefore carbon is just squeezed out by silicon and forms the flake graphite of free state, carbon content increase along with alloy, the size of the flake graphite of separating out increases, and quantity increases, and will form more cavity and constitute more microbattery, and be unfavorable for its mechanical property and solidity to corrosion, so the C content of high silicon iron-base alloy is selected in 0.2%-0.8%.
Manganese is a kind of element that enlarges the austenitic area in ferrous alloy, and silicon is the element that dwindles the austenitic area, a spot of manganese will be solid-solubilized in the alpha ferrite in high silicon iron-base alloy, solidity to corrosion and mechanical influence to alloy are not obvious, but too high manganese produces adverse influence to the performance of high silicon iron-base alloy, because manganese solidifying segregation coefficient in alloy is bigger, as easy as rolling off a log enrichment between dentrite, make the inhomogeneous of composition profiles, cause the electropotential of local microcell to have certain difference, even form the microbattery effect, reduce the solidity to corrosion of alloy, so the content of manganese is selected between 0.3%-0.8%.
The content of phosphorus will have influence on the thermotolerance of high silicon iron-base alloy, and its content of general requirement is lower than 0.04%.The content of sulphur increases the solidity to corrosion and the mechanical property that can reduce high silicon iron-base alloy, because the reactivity coefficient of S improves along with the increase of Si in the iron.So the content of S should be strict controlled in below 0.04%.
Rare earth is a kind of active element, adds alloy in right amount and will produce good effect.Remain in the solidity to corrosion that the interior trace rare-earth of cast iron can obviously improve cast iron.It is generally acknowledged that this is because rare earth has changed due to the sticking toughness of oxide film of Cast Iron Surface.In high silicon iron-base alloy, add rare earth content and should determine that the residual quantity of air content in high silicon iron-base alloy is controlled at 0.01%-0.05% according to the air content in the molten iron.
The preparation method of this silicon cast iron battery lead plate comprises alloy melting successively, rotten processing, casting and thermal treatment, and its steps in sequence is as follows:
Comprise the following steps:
(1) alloy melting---adopt smelting process twice with induction furnace or electric arc furnace with acid lining, steel scrap, ferrosilicon and foundry returns (mainly refer to water, rising head) are added successively and carry out the melting first time in induction furnace or the electric arc furnace, require the dry few rust of material, refractory brick fragment and the fluorite powder that in fusion process, add weight of molten iron about 2% as slag former, reduce the scaling loss of element in the alloy melting process, the purpose of melting for the first time is that all raw materials are melt-blended evenly, remove part slag inclusion and gas, it is standby to pour into ingot; The ingot adding induction furnace or the electric arc furnace of smelting and pouring one-tenth carry out the melting second time for the first time again, in fusion process, do not add or add a small amount of glass cullet or fluorite slag making, to molten iron degassing slagging-off, after the fusing, further adjust chemical ingredients, after treating that temperature, composition meet processing requirement, the cast of coming out of the stove.The chemical ingredients of high silicon iron-base alloy (weight percentage) reaches when all the other general temperature of component for unavoidable impurities and Fe of C:0.2%-0.8% Si:13.0%-18.0% Mn:0.3%-0.8% S＜0.03%P＜0.03% RE:0.01%-0.05% reach 1400 ℃-1450 ℃ comes out of the stove.
(2) the rotten processing
The rotten purpose of handling is crystal grain thinning and purifying molten iron, adopt rare earth ferrosilicon alloy as alterant, treat in advance before tapping a blast furnace that the qualified back of molten iron adds alterant at the bottom of the bag of hot metal ladle, and be baked to preset temperature with hot metal ladle, after treating that molten iron is qualified, pour molten iron into the processing of going bad at the bottom of the hot metal ladle.Alterant is a rare earth ferrosilicon alloy, and the add-on of alterant is for handling 0.2%-1.0% of weight of molten iron;
(3) casting
Adopt lost foam casting or ordinary sand casting technology, at first, the stainless steel steel mesh made according to indicated status requirement on the technology, is fixed in foam plastics mould or the die cavity; Secondly, adopt the moulding of battery lead plate shaping mould, the unhurried current positive-pressure gating system is set, the ratio of the cross-sectional area of sprue, cross gate and ingate constituent element is ∑ A
Directly: ∑ A
Horizontal: ∑ A
In=1.1-1.3:1.5-1.7:1.0, the skimming effect in order further to strengthen watering injection molding is being provided with fibrous filter net, wherein: ∑ A on the cross gate constituent element of gating system
Directly, ∑ A
Horizontal, ∑ A
InBe respectively the cross-sectional area of sprue, cross gate and ingate.Mould assembling is to be poured then.During cast, the pouring procedure that adopts low temperature to water soon.When the casting solidification of casting after 60 minutes-70 minutes, shake out under the red heat state;
(4) the necessary annealed thermal treatment of thermal treatment---high silicon iron-base alloy battery lead plate, this not only helps improving the mechanical property of alloy, and can guarantee that foundry goods slowly cools off, and eliminates thermal stresses.With the foundry goods of the shake out heat treatment furnace of packing into immediately, even heating to 750 ℃-800 ℃ was incubated 2 hours-4 hours, below heat treatment furnace internal cooling to 100 ℃ after, foundry goods is taken out the heat treatment furnace air cooling.
Silicon cast iron battery lead plate of the present invention is compared with existing silicon cast iron battery lead plate, high solidity to corrosion is not only arranged, and high mechanical property and electroconductibility preferably arranged, owing to stainless steel mesh is being set interior, its intensity and impelling strength are improved, break resistance obtains very big improvement, can cast length and reach the above cold rolled stainless steel sheet pickling tank battery lead plate of 3m, and the global formation mechanical property is good, in transportation, installation, use, be not easy to rupture, long service life was generally 13-15 month.This silicon cast iron battery lead plate and preparation method thereof has been avoided Foundry Production and has been easy to generate defectives such as shrinkage porosite, shrinkage cavity and crackle when using, and is suitable for casting reaching 3m and above high silicon iron-base alloy battery lead plate thereof.
Description of drawings
Fig. 1 is the front view of this pickling tank with high silicon iron-base alloy battery lead plate embodiment one.
Fig. 2 is and the corresponding vertical view of Fig. 1.
Fig. 3 is the part sectioned view along A-A among Fig. 2.
Fig. 4 is the vertical view of this pickling tank with high silicon iron-base alloy battery lead plate embodiment two.
Fig. 5 is the vertical view of this pickling tank with high silicon iron-base alloy battery lead plate embodiment three.
Fig. 6 is this pickling tank with high silicon iron-base alloy battery lead plate embodiment two as electric pole plate and the high silicon iron-base alloy battery lead plate embodiment three mutual block position figure as lower electrode plate.
Fig. 7 is the part sectioned view along B among Fig. 6-B line.
Fig. 8 is this high silicon iron-base alloy battery lead plate gating system schematic diagram.
Among the above-mentioned figure:
1, energising connection hole 2, high silicon iron-base alloy battery lead plate 3, high silicon iron-base alloy
4, stainless steel concrete steel net 5, base plate 6, side plate 7, high silicon iron-base alloy battery lead plate
8, top board 9, base plate 10, side plate 11, high silicon iron-base alloy battery lead plate
12, top board 13, stainless steel plate 14, high silicon iron-base alloy 15, insulcrete
16, high silicon iron-base alloy 17, stainless steel plate 18, through hole 19, sprue cup
20, sprue 21, plastic film 22, cross gate 23, rising head
24, full mold apperance 25, die cavity 26, ingate 27, casting mold 28, vacuum orifice
Embodiment
Describe the embodiment of this pickling tank in detail below in conjunction with embodiment and accompanying drawing thereof with silicon cast iron battery lead plate, simultaneously the embodiment of this pickling tank with the preparation method of silicon cast iron battery lead plate also described in detail, but the embodiment of this silicon cast iron battery lead plate and preparation method thereof is not limited to following embodiment.
Battery lead plate embodiment one
The silicon cast iron battery lead plate 2 that Fig. 1, Fig. 2 and Fig. 3 describe is a rectangular rectangular plate, long 2523mm, wide 350mm, thick 45mm, centre in battery lead plate is being provided with stainless steel concrete steel net 4, the stainless reinforcing bar of stainless steel concrete steel net 4 usefulness is weaved into, the diameter of reinforcing bar is Φ 6mm, spacing between the two adjacent reinforcing bars is 50mm, and mesh is a square, and the material of steel mesh is an austenitic stainless steel, stainless steel concrete steel net 4 long 2050mm, wide 260mm, high silicon iron-base alloy 3 cast in the centre and the both sides thereof of stainless steel concrete steel net 4, and energising connection hole 1 is arranged at the two ends of battery lead plate.
The chemical ingredients of the high silicon iron-base alloy of present embodiment (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.8% Si:18.0% Mn:0.8% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Battery lead plate embodiment two
The silicon cast iron battery lead plate 7 that Fig. 4 and Fig. 6 provide is made of two side plates 6 and a top board 8, two side plates 6 and top board 8 constitute the bending plate of ∏ shape for one, respectively there is an outwards base plate 5 of bending in bottom at two side plates 6, it is vertically analysed and observe and is handle-shaped, at base plate 5 the energising connection hole is arranged.The stainless steel plate 13 of the distribution through hole 18 that is bent into ∏ shape is being set in the centre of silicon cast iron battery lead plate 7, is seeing Fig. 7, high silicon iron-base alloy 14 casts in the centre and the both sides thereof of stainless steel plate 13.Stainless steel plate 13 physical dimension are than silicon cast iron battery lead plate 7 little 100mm.The diameter of the through hole 18 of stainless steel plate 13 is Φ 20mm in the present embodiment, and the distance between the adjacent two through hole 18 is 36mm, and thickness is 10mm.This silicon cast iron battery lead plate 7 long 2523mm, wide 350mm, thick 45mm, high 690mm.
The chemical ingredients of the high silicon iron-base alloy of present embodiment (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.2% Si:13.0% Mn:0.3% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Battery lead plate embodiment three
The silicon cast iron battery lead plate 11 that Fig. 5 and Fig. 6 provide is made of two side plates 10 and a top board 12, two side plates 10 and top board 12 constitute the bending plate of ∏ shape for one, the bottom of two side plates 10 respectively have one outwards bending base plate 9 its vertically analyse and observe and be handle-shaped, connect the hole at base plate 9 live wires.The stainless steel plate 17 of the distribution through hole that is bent into into ∏ shape is being set in the centre of silicon cast iron battery lead plate 11, can be referring to Fig. 7, high silicon iron-base alloy 14 casts in the both sides of stainless steel plate 17.Stainless steel plate 17 physical dimension are than silicon cast iron battery lead plate 11 little 100mm.The diameter of the through hole of stainless steel plate 13 is Φ 40mm in the present embodiment, and the distance between the adjacent two through hole is 60mm, and thickness is 10mm.This silicon cast iron battery lead plate 11 long 2523mm, wide 350mm, thick 45mm, high 420mm.
The chemical ingredients of the high silicon iron-base alloy of this example (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.35% Si:16.3% Mn:0.55% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Battery lead plate embodiment four
Its structure is identical with battery lead plate embodiment one, is the chemical ingredients difference of high silicon iron-base alloy,
The chemical ingredients of the high silicon iron-base alloy of the battery lead plate of present embodiment (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.2% Si:13.0% Mn:0.8% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Battery lead plate embodiment five
Its structure is identical with battery lead plate embodiment one, is the chemical ingredients difference of high silicon iron-base alloy, and the chemical ingredients of the high silicon iron-base alloy of the battery lead plate of present embodiment (weight percentage) is:
All the other are the component of unavoidable impurities and Fe for C:0.8% Si:18.0% Mn:0.3% S＜0.03% P＜0.03%RE:0.01%-0.05%.
Electrode plate manufacturing method embodiment
Describe the manufacture method of this high silicon iron-base alloy battery lead plate below in detail with high silicon iron-base alloy battery lead plate embodiment one.
(1) alloy melting
Adopt 1 ton of intermediate frequency furnace to smelt, 710 kilograms of the steel scraps that drying is become rusty less, 200 kilograms of 75 ferrosilicon, 110 kilograms of foundry returns (the pickling tank residue material such as the dead head of high silicon iron-base alloy battery lead plate), according to above-mentioned put in order reinforced, add successively in the induction furnace of acid lining, be heated to 1480 ℃ of-1520 ℃ of meltings, present embodiment is to be heated to 1500 ℃, with all raw material fusing evenly, for purifying molten iron, reduce the scaling loss of element in the alloy melting process, in fusion process, add the rubble ash, left standstill 10 minutes, remove gas and inclusion in the alloy liquid, pour at 1420 ℃-1460 ℃ and cast iron ingot, present embodiment is at 1450 ℃.
Casting iron ingot of pouring into, be added in the induction furnace under 1480 ℃ of-1520 ℃ of meltings, present embodiment is to carry out the melting degassing slagging-off second time after the fusing down at 1500 ℃, adds 20 kilograms in acid slag former fluorite in fusion process, and the chemical ingredients of molten iron (weight percentage) reaches:
All the other are the component of unavoidable impurities and Fe for C:0.8% Si:18.0% Mn:0.8% S＜0.03% P＜0.03%RE 0.01%-0.05%.
Left standstill 30 minutes, and came out of the stove during 1400 ℃-1450 ℃ of molten iron furnace temperatures, present embodiment is at 1420 ℃.
(2) the rotten processing
After the melting for the second time and leave standstill alloy liquid after 30 minutes, during 1400 ℃-1450 ℃ of tapping temperatures, present embodiment is in the time of 1420 ℃, and alloy liquid is poured in the rare earth ferrosilicon alloy as alterant that adds at the bag end, and the add-on of alterant is determined according to the amount of tapping a blast furnace.Handle 0.2%-1.0% of weight of molten iron;
(3) casting
Before casting, make stainless steel concrete steel net 4 and full mold apperance 24 and casting mold 27 earlier, stainless steel concrete steel net 4 long 2050mm, wide 260mm, and through shot-peening and derusting by sandblast.Stainless steel concrete steel net 4 is put into the foaming mould of porous plastics, form the porous plastics full mold apperance 24 of inlaying stainless steel concrete steel net 4, the profile of full mold apperance 24 is similar to silicon cast iron battery lead plate 2, and physical dimension is smaller, can be referring to Fig. 1 and Fig. 2.Casting mold 27 is seen Fig. 8, places casting mold 27 to form casting mold cavity 25 full mold apperance 24, and casting mold 27 is the enclosed gating system of unhurried current, and the ratio of the cross-sectional area of its sprue 20, cross gate 22 and ingate 26 constituent elements is ∑ A
Directly: ∑ A
Horizontal: ∑ A
In=1.1:1.5:1.0 is being provided with a fibrous filter net on cross gate 22 constituent elements that water injection molding.
With the also rotten molten iron of handling after the melting second time, the pouring procedure that adopts low temperature to water soon is poured in the die cavity 25 of the enclosed casting mold 27 of unhurried current, and teeming temperature is 1320 ℃-1380 ℃, in behind the casting solidification of casting 60 minutes-70 minutes, shake out under the red heat state;
(4) thermal treatment
With the foundry goods of the red heat heat treatment furnace of packing into immediately, even heating to 750 ℃-800 ℃ was incubated 2 hours-4 hours, and present embodiment is to be heated to 760 ℃, is incubated 3 hours, below stove internal cooling to 100 ℃ after, the air cooling of coming out of the stove.
Battery lead plate embodiment two, three, four and battery lead plate embodiment five can adopt above-mentioned method preparation, and the chemical ingredients of high silicon iron-base alloy reaches the requirement of embodiment two, three, four and five defineds respectively.
Silicon cast iron battery lead plate embodiment two forms an assembly with silicon cast iron battery lead plate embodiment three and closes use, referring to Fig. 6.Processed metal sheet is from passing through between the two.
Said steel scrap is the carbon element steel scrap in the present specification, requires cleaning surfaces to become rusty less.
Claims (4)
1, a kind of silicon cast iron battery lead plate, its profile is rectangular flat board or bent plate, at the two ends of plate electrode plate the energising connection hole is arranged, the silicon cast iron battery lead plate of bent plate has two side plates and a top board, two side plates and a top board are the bending plate that one constitutes ∏ shape, respectively there is a base plate that outwards bends in bottom at two side plates, its longitudinal profile is handle-shaped, the energising connection hole is arranged on base plate, it is characterized in that: the stainless steel steel mesh is being set in battery lead plate, and the stainless steel plate of distribution through hole weaved into or adopts by the stainless steel steel mesh with stainless reinforcing bar, the diameter of reinforcing bar is Φ 5mm-Φ 10mm, and the spacing between the two adjacent reinforcing bars is 40mm-100mm; Stainless steel thickness of slab 5mm-12mm, the diameter of through hole are Φ 10mm-Φ 50mm; The width of stainless steel steel mesh is than the narrow 20mm-120mm of battery lead plate, and the size of physical dimension and battery lead plate adapts, and length is than the little 40mm-500mm of battery lead plate, and high silicon iron-base alloy casts in outside the stainless steel mesh.
2, silicon cast iron battery lead plate according to claim 1 is characterized in that: the weight percentage of the chemical ingredients of high silicon iron-base alloy is:
All the other are the component of unavoidable impurities and Fe for C:0.2%-0.8% Si:13.0%-18.0% Mn:0.3%-0.8% S＜0.03%P＜0.03% RE:0.01%-0.05%.
3, silicon cast iron battery lead plate according to claim 2 is characterized in that: the weight percentage of the chemical ingredients of high silicon iron-base alloy is:
All the other are the component of unavoidable impurities and Fe for C:0.35% Si:16.3% Mn:0.55% S＜0.03% P＜0.03%RE 0.01%-0.05%.
4, the preparation method of described kind of silicon cast iron battery lead plate of claim 2, it comprises alloy melting successively, rotten processing, casting and thermal treatment, its steps in sequence is as follows:
(1) alloy melting---adopt smelting process twice with induction furnace or electric arc furnace with acid lining, steel scrap, ferrosilicon and foundry returns added successively carry out the melting first time in induction furnace or the electric arc furnace, require the dry few rust of material, refractory brick fragment and the fluorite powder that in fusion process, add weight of molten iron about 2% as slag former, reduce the scaling loss of element in the alloy melting process, all raw materials are melt-blended evenly, remove part slag inclusion and gas, it is standby to pour into ingot; The ingot adding induction furnace or the electric arc furnace of smelting and pouring one-tenth carry out the melting second time for the first time again, in fusion process, do not add or add a small amount of glass cullet or fluorite slag making, to molten iron degassing slagging-off, after the fusing, further adjust chemical ingredients, the weight percentage of the chemical ingredients of high silicon iron-base alloy reaches:
C:0.2%-0.8% Si:13.0%-18.0% Mn:0.3%-0.8% S＜0.03%P＜0.03% RE:0.01%-0.05% comes out of the stove when all the other component temperatures for unavoidable impurities and Fe meet processing requirement;
(2) the rotten processing
Adopt rare earth ferrosilicon alloy as alterant, treat in advance before tapping a blast furnace that the qualified back of molten iron adds the rare earth ferrosilicon alloy alterant at the bottom of the bag of hot metal ladle, and be baked to preset temperature with hot metal ladle, after treating that molten iron is qualified, pour molten iron into the processing of going bad at the bottom of the hot metal ladle, the add-on of alterant is for handling 0.2%-1.0% of weight of molten iron;
(3) casting
Adopt lost foam casting or ordinary sand casting technology, at first, the stainless steel steel mesh of making is fixed in foam plastics mould or the die cavity; Secondly, adopt the moulding of battery lead plate shaping mould, the unhurried current positive-pressure gating system is set, the ratio of the cross-sectional area of sprue, cross gate and ingate constituent element is ∑ A
Directly: ∑ A
Horizontal: ∑ A
In=1.1-1.3:1.5-1.7:1.0 is being provided with fibrous filter net on the cross gate constituent element of gating system, wherein: ∑ A
Directly, ∑ A
Horizontal, ∑ A
InBe respectively the cross-sectional area of sprue, cross gate and ingate; Mould assembling is to be poured then, during cast, and the pouring procedure that adopts low temperature to water soon, when the casting solidification of casting after 60 minutes-70 minutes, shake out under the red heat state;
(4) thermal treatment---with the foundry goods of the shake out heat treatment furnace of packing into immediately, even heating to 750 ℃-800 ℃ was incubated 2 hours-4 hours, below heat treatment furnace internal cooling to 100 ℃ after, foundry goods is taken out the heat treatment furnace air cooling.
5, the preparation method of according to claim 4 kind of silicon cast iron battery lead plate is characterized in that: when alloy melting, the weight percentage of the chemical ingredients of high silicon iron-base alloy reaches
All the other come out of the stove C:0.35% Si:16.3% Mn:0.55% S＜0.03% P＜0.03%RE 0.01%-0.05% during for the component of unavoidable impurities and Fe.
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| CN104043808B (en) * | 2014-06-20 | 2016-04-13 | 北京科技大学 | One adds copper mesh compound high silicon iron-base alloy battery lead plate and manufacture method thereof |
| CN104057065A (en) * | 2014-06-20 | 2014-09-24 | 北京科技大学 | Reinforced composite high silicon iron-based alloy plate electrode and manufacturing method thereof |
| CN105039643A (en) * | 2015-07-30 | 2015-11-11 | 益阳金沙重型机械制造有限公司 | Technology for remelting utilization of large-tonnage risers |
| CN110042302A (en) * | 2019-04-03 | 2019-07-23 | 北京科技大学 | A kind of anti-corrosion Ultra-low carbon high silicon iron-base alloy and preparation method thereof |
| CN110931994B (en) * | 2019-12-03 | 2021-04-06 | 烽火海洋网络设备有限公司 | High-silicon cast iron electrode and terminal station ocean ground |
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