CN103341588B - Lead acid accumulator plate grid releasing agent used for casting and preparation method thereof - Google Patents

Lead acid accumulator plate grid releasing agent used for casting and preparation method thereof Download PDF

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Publication number
CN103341588B
CN103341588B CN201310203862.XA CN201310203862A CN103341588B CN 103341588 B CN103341588 B CN 103341588B CN 201310203862 A CN201310203862 A CN 201310203862A CN 103341588 B CN103341588 B CN 103341588B
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releasing agent
grid
casting
parts
component
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CN103341588A (en
Inventor
罗建华
杜灵阳
史伯荣
黄文�
代飞
李常飞
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Zhejiang Tianneng Power Energy Co Ltd
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Zhejiang Tianneng Power Energy Co Ltd
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Abstract

The invention discloses a kind of lead acid accumulator plate grid releasing agent used for casting and preparation method thereof, described lead acid accumulator plate grid releasing agent used for casting is mixed by weight 7:210 ~ 7:220 by component A and B component, wherein, with parts by weight, the raw material of component A comprises: 100 parts of phosphoric acid, 18 ~ 22 parts of aluminium hydroxides and 45.65 ~ 49.65 parts of water, wherein phosphoric acid folding hundred; With parts by weight, the raw material of B component comprises: 100 parts of water, 3.5 ~ 4 parts of cork powders and 3 ~ 3.5 parts of waterglass, wherein waterglass molar concentration is 3.1 ~ 3.4M.The invention also discloses the preparation method of described lead acid accumulator plate grid releasing agent used for casting.Releasing agent difficult drop-off of the present invention, durability is strong, decreases the spraying number of times of releasing agent in grid production, has saved spray time, improve production efficiency.Utilize releasing agent of the present invention, grid weight and thickness evenly, do not produce pore substantially.

Description

Lead acid accumulator plate grid releasing agent used for casting and preparation method thereof
Technical field
The present invention relates to storage battery production technical field, particularly relate to a kind of lead acid accumulator plate grid releasing agent used for casting and preparation method thereof.
Background technology
Grid is one of core component of lead-acid accumulator, in lead-acid accumulator, grid is as the carrier of active material, play a part skeletal support and adhesion activity material, simultaneously, the conductor of grid also as electric current plays a part afflux, confluxes and defeated stream, and in addition, grid also can make balanced current distribution in active material as the current-sharing body of pole plate.
At present, the processing technology of grid mainly contains casting and die casting, and most grid is made up by gravity casting of lead-containing alloy, is cast in the mould of grid after being about to the lead-containing alloy fusing configured.When casting, releasing agent is absolutely necessary subsidiary products, and on the one hand, releasing agent makes grid be more prone to deviate from from mould; On the other hand, because mould is that metal is made, therefore there is the feature of rapid heat dissipation, in addition dies cavity groove is narrow shallow, the alloy liquid melted is made to be difficult to be full of mould, therefore, between die surface and cast alloys, spray the mobility that releasing agent can ensure alloy, ensure the ratio of briquetting of casting grid.
Therefore, the quality of releasing agent directly affects the quality of grid casting, and releasing agent configuration is bad, not only affects demoulding efficiency, affects production efficiency, produces pore or crackle etc., affect current conductivity energy when grid also may be caused to cast.
At present, at lead-acid accumulator, factory generally uses cork powder, and the releasing agent of sodium metasilicate and water preparation is sprayed on dies cavity, plays the effects such as insulation, heat insulation, lubrication, the demoulding.
The Chinese patent literature being 102873265A as publication number discloses a kind of casting lead acid battery grid releasing agent, this releasing agent is made up of following material and part by weight: 100 ± 2 parts, water, cork powder 4.2 ± 0.1 parts, sodium metasilicate 2.4 ± 0.05 parts, phosphoric acid 0.5 ± 0.03 part, ripe rubber powder 0.45 ± 0.02 part, aerosil 0.08 ± 0.02 part.The compound method of above-mentioned casting lead acid battery grid releasing agent, comprises the following steps: the deionized water of formula ratio, sodium metasilicate, ripe rubber powder join in Aluminum Drum and carry out being heated to temperature 80 ± 2 DEG C by (1); (2) slowly the cork powder of formula ratio, aerosil are joined in gained solution and also constantly stir, until cork powder and aerosil are dispersed in water; (3) continue the little fire of heating and boil 30 minutes; (4) phosphoric acid of formula ratio added wherein after stopping heating and fully stir 2 ~ 3 minutes.
The problem of existing releasing agent ubiquity poor durability, under normal circumstances, often spray a releasing agent, general production 1000 ~ 3000 grids, need frequent brush mould, spraying releasing agent, affect production efficiency, unstable product quality, and plumbous calcium series alloy grid is also existed to the problem easily producing pore, unstable product quality.
Summary of the invention
The invention provides a kind of lead acid accumulator plate grid releasing agent used for casting, durability is strong, decreases releasing agent spraying number of times, and overcomes the problem that grid easily produces pore.
A kind of lead acid accumulator plate grid releasing agent used for casting, mixed by weight 7:210 ~ 7:220 by component A and B component, wherein, with parts by weight, the raw material of component A comprises:
Phosphatase 11 00 part
18 ~ 22 parts, aluminium hydroxide
45.65 ~ 49.65 parts, water;
Wherein phosphoric acid folding hundred;
With parts by weight, the raw material of B component comprises:
100 parts, water
Cork powder 3.5 ~ 4 parts
Waterglass 3 ~ 3.5 parts;
Wherein waterglass molar concentration is 3.1 ~ 3.4M.
In usual industrial production, the phosphoric acid of use is the liquid of about 85% for mass fraction, in the present invention, during the weight portion of calculating, phosphoric acid is converted to 100% concentration.If in use adopt the phosphoric acid of other concentration, then the water in phosphoric acid adds up to the water in component A.
Waterglass is being commonly called as of the aqueous solution of sodium metasilicate, and the modulus (molar concentration) being generally used for waterglass prepared by releasing agent is 3.1 ~ 3.4M.In the present invention, waterglass has refered in particular to concrete concentration range, the water therefore in waterglass no longer accumulated value to the water in B component.
Described grid is lead-calcium alloy slab lattice.
Preferably, with parts by weight, the raw material of component A comprises:
Phosphatase 11 00 part
20 ~ 20.5 parts, aluminium hydroxide
45.65 ~ 47.65 parts, water.
Preferably, with parts by weight, the raw material of B component comprises:
100 parts, water
Cork powder 3.5 ~ 3.75 parts
Waterglass 3.25 ~ 3.5 parts.
Preferably, the weight ratio of component A and B component is 7:213 ~ 7:215.
In the raw material of component A and B component, described water is the deionized water of electrical conductivity≤10 μ S.Avoid the impurity in water to cause the circulation of plumbous liquid and exhaust to be obstructed, avoid grid to produce pore.
In the raw material of B component, cork powder water content is≤1%, and granularity is 200 ~ 600 orders.
Preferably, the granularity of cork powder is 600 orders.Releasing agent can be made to be attached to uniformly on plate grid die, even by heat transfer, plumbous flow and exhaust phase to smooth and easy, strong adhesion, difficult drop-off, thus the weight of grid and thickness even.
Present invention also offers a kind of preparation method of lead acid accumulator plate grid releasing agent used for casting, comprising:
(1) phosphoric acid is heated to 78 ~ 85 DEG C, adds aluminium hydroxide and stir into pasty state, then add water and stir, obtained component A;
(2) water and waterglass are heated to 98 ~ 100 DEG C, add cork powder and stir, obtained B component, then add the obtained component A of step (1), stir and obtain described releasing agent.
Preferably, in step (1), phosphoric acid is heated to 80 ~ 82 DEG C, is more preferably 80 DEG C.
Preferably, in step (2), water and waterglass are heated to 99 ~ 100 DEG C, are more preferably 100 DEG C.
Compared with prior art, beneficial effect of the present invention is:
(1) releasing agent difficult drop-off of the present invention, durability is strong, decreases the spraying number of times of releasing agent in grid production, has saved spray time, added the effective production time of grid, improve production efficiency.
(2) utilize releasing agent of the present invention, grid weight and thickness evenly, do not produce pore substantially.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further explained.
In embodiment 1 ~ 5, deionization electrical conductivity of water≤10 μ S;
Cork powder (600 order) to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province;
Waterglass (modulus is 3.1 ~ 3.4M) flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province county magistrate bridge.
Embodiment 1
One, raw material
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 80 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 300g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 100 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying twice releasing agent is only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5460 can be produced, negative electrode grid 5880 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Embodiment 2
One, raw material
Cork powder to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province, and waterglass flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province;
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 81 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 300g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 100 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying twice releasing agent is only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5460 can be produced, negative electrode grid 5880 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Embodiment 3
One, raw material
Cork powder to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province, and waterglass flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province;
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 82 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 290g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 99 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying twice releasing agent is only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5460 can be produced, negative electrode grid 5880 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Embodiment 4
One, raw material
Cork powder to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province, and waterglass flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province;
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 78 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 280g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 99 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying three releasing agents are only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5070 can be produced, negative electrode grid 5460 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Embodiment 5
One, raw material
Cork powder to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province, and waterglass flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province;
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 85 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 320g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 98 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying three releasing agents are only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5070 can be produced, negative electrode grid 5460 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Embodiment 6
One, raw material
Cork powder to shake wood powder Co., Ltd of Neusoft purchased from Dongtai City of Jiangsu Province, and waterglass flies to reach chemical plant purchased from At Meishan, changxing, zhejiang Province;
Two, preparation method
(1) little for phosphoric acid fire (general about 20min is heated to temperature required) is heated to 80 DEG C, adds aluminium hydroxide and stir into pasty state, then it is even to add 305g deionized water and stirring;
(2) by 2000g deionized water and waterglass mixing, be heated to 99 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid (lead-calcium alloy slab lattice), anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, spraying three releasing agents are only needed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 5070 can be produced, negative electrode grid 5460 can be produced, evenly, substantially there is not pore in the grid weight of producing and thickness.
Comparative example
Formula and preparation method with reference to publication number releasing agent disclosed in the Chinese patent literature of 102873265A:
(1) the deionized water 10Kg of electrical conductivity≤10 μ s/cm, industrial primes powdery sodium silicate 240g, the ripe rubber powder 45g of industrial primes to be joined in Aluminum Drum and to be heated to temperature 80 DEG C;
(2) be slowly 200m by 600 object cork powder 420g, specific area 2the aerosil 8g of/g is added to the water and constantly stirs, until cork powder and aerosil are dispersed in water;
(3) continue the little fire of heating and boil 30 minutes;
(4) after stopping heating, analysis pure phosphoric acid 50g added and fully stir 3 minutes;
(5) 60 mesh sieves are crossed before using after the releasing agent cooling prepared.
Three, interpretation of result
Uniformly sprayed by the releasing agent of preparation on grid casting mould, carry out the casting of grid, anode plate grid is cast with the speed of 14/min with 13/min, negative electrode grid, carries out statistical computation by 8 hours per tour systems.
Find in production, use the releasing agent of the present embodiment, five releasing agents need be sprayed per tour and every 8 hours, spray a releasing agent delay 30min, after 8 hours, anode plate grid 4290 can be produced, negative electrode grid 4620 can be produced, in the grid produced, pore is compared with embodiment more than 1 ~ 6, and has 6 to there is a large amount of pore, does not meet standard.
As fully visible, in grid is produced, releasing agent per tour of the present invention only needs spraying 2 ~ 3 times, and existing releasing agent need spray more than at least four times, this reduces delaying of spraying, improve production efficiency, compared with comparative example, the productivity ratio of positive and negative electrode grid is the highest improves more than 27%.Meanwhile, use releasing agent of the present invention, the quality of grid is easy to control, and does not substantially produce pore.

Claims (1)

1. a lead acid accumulator plate grid releasing agent used for casting, raw material consists of:
The preparation method of described lead acid accumulator plate grid releasing agent used for casting is as follows:
(1) by little for phosphoric acid fire, be heated to 80 DEG C through 20min, add aluminium hydroxide and stir into pasty state, then add 300g deionized water and stirring evenly, obtain mixed liquor;
(2) by 2000g deionized water and waterglass mixing, be heated to 100 DEG C, add cork powder and stir, then add the obtained mixed liquor 70g of step (1), stir and obtain described releasing agent.
CN201310203862.XA 2013-05-28 2013-05-28 Lead acid accumulator plate grid releasing agent used for casting and preparation method thereof Active CN103341588B (en)

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CN105710286B (en) * 2016-04-06 2018-02-16 天能电池集团(安徽)有限公司 A kind of casting grid of lead-acid accumulator releasing agent
CN106111885A (en) * 2016-08-25 2016-11-16 四川荣联电子科技有限公司 The preparation method of lead-acid accumulator releasing agent
CN108339931A (en) * 2018-03-14 2018-07-31 天能电池集团(安徽)有限公司 A kind of battery grid releasing agent and its preparation method
CN110293204B (en) * 2019-08-05 2020-12-29 江西新威动力能源科技有限公司 Release agent for grid casting and curing process

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