CN101508006A - High-performance dandruff comb clay sand one-piece casting method - Google Patents
High-performance dandruff comb clay sand one-piece casting method Download PDFInfo
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- CN101508006A CN101508006A CNA2009100196406A CN200910019640A CN101508006A CN 101508006 A CN101508006 A CN 101508006A CN A2009100196406 A CNA2009100196406 A CN A2009100196406A CN 200910019640 A CN200910019640 A CN 200910019640A CN 101508006 A CN101508006 A CN 101508006A
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Abstract
The invention discloses an integral forging method for a high-performance perforated strainer by clay sand, namely a method for molding and forging a high-performance perforated strainer by adopting common clay sand. The invention adopts the following specific proposal that the method comprises the following steps: using the common clay sand as a main molding material, adding 5 to 6 percent of bentonite and 3 to 5 percent of coal dust of the total weight of the clay sand into the clay sand and dry-mixing the materials, adding 3 to 4 percent of water of the total weight of the clay sand into the mixture and blending the mixture to manufacture molding sand, then molding the molding sand by an ejection molding machine with a copper molding die, and finishing the integral forging of the high-performance perforated strainer through the processes of ball-blast cleaning, painting, packing, warehousing, and the like. The method adopts the common clay sand to replace resin sand to integrally forge the high-performance perforated strainer, does not need a parting agent, does not need mechanical processing to arrange a groove and a bayonet, and has the characteristics of simple formulation and process, easy realization of industrialization, no secondary pollution during production, low production cost and high rate of forged piece finished products.
Description
Technical field:
The invention belongs to casting technology field, be specifically related to a kind of method that adopts clay-bonded sand monoblock cast high-performance double-edged fine-toothed comb.
Technical background:
The high-performance double-edged fine-toothed comb requires material and very strictness of dimensional requirement.According to the relevant regulations of international standard EN1433:2002, be marked with the F900 pressure rating by the pressure testing body, must carry out pressure testing according to high-grade, meet the double-edged fine-toothed comb of this grade, be called the high-performance double-edged fine-toothed comb.Production to this class double-edged fine-toothed comb, external traditional production technology, offshore companies such as Germany and Spain adopt the moulding of resin sand production line, produce spray earlier, process by machining center again, make outer profile size, bayonet socket and the installation dimension of double-edged fine-toothed comb reach specification requirement.External double-edged fine-toothed comb mould all adopts aluminum die, aluminium template, divides top box and nowel, the alignment pin location, every production one type all will be on mould release agent spraying so that lift easily, thereby guarantee the moulding yield rate.Domestic traditional processing technology is with similar abroad, as, number of patent application be 96115047.5 patent announcement a kind of " high-strength light draining double-edged fine-toothed comb and preparation method thereof ", its technology is to adopt epoxy resin to carry out Foundry Production, the founding materials main component is an E-5 epoxy resin, curing agent, silicon dioxide powder, the phthalic acid dibutylester, fatty amine, R-glycidoxy trimethoxy silane, antioxidant 4010 is formed, and undertaken by following technology: (1) is poured load weighted E-51 epoxy resin in the drum into, put into load weighted dibatyl phithalate then successively, fatty amine, r-glycidoxy trimethoxy silane, antioxidant 4010 carries out clockwise abundant stirring in drum, till bubble not occurring, temperature remains room temperature; (2) under room temperature state, load weighted silicon dioxide powder (50～200 order) filler poured into carry out clockwise abundant stirring in the mixed solution that stirs, dissolve in fully in the epoxy resin mixed solution up to filler, it is qualified bubble side not occurring, forms the epoxy mortar shape; (3) under room temperature state, load weighted curing agent T31 curing agent is poured in the epoxy mortar, carry out clockwise abundant stirring, mixing time is about five minutes; (4), when stirring epoxy mortar, bar-mat reinforcement is fixed in the mould of product, the centering position, positive and negative deviation is 1mm; (5) epoxy mortar that stirs is poured in the product mold, is shaken while pour into and smash, the cast finish after, with little grafter with its surperficial screeding and compaction till; (6) will pour into a mould good product and put between maintenance, and put in good order and rested 2 hours, and begin between maintenance then to heat up and heated up 10 ℃ every 1 hour, till 80 ℃, last constant temperature maintenance 24 hours reaches product stripping; (7) behind the product stripping, rebuild, the qualified on inspection back packing of product enters the warehouse for finished product keeping at last.
Both at home and abroad the shortcoming that exists of production high-performance double-edged fine-toothed comb production technology is: 1. production cost height, about 12000 yuan/ton of the price of resin, about 3200 yuan/ton of the price of curing agent, and the processing of also will regenerating after resin sand uses, about 120 yuan/ton of disposal cost, about 1100 yuan of/ton foundry goods of total moulding expense.2. resin sand can produce a large amount of waste gas such as carbon dioxide in the calcination process, and human body and natural environment are produced very big harm.3 yield rates are low, only are about 85%.4. the mounting groove of double-edged fine-toothed comb and bayonet socket are not once produced and finished, promptly must finish mounting groove and bayonet socket, complex process by machining.
Also have following shortcoming with the mould that has process matching both at home and abroad now simultaneously: 1. must adopt the resin sand production line to carry out moulding, equipment investment is very big, and general resin sand production line need be invested 1000～1,800 ten thousand yuan/cover.2. the phenolic sand molding line die cost of being joined is higher, general 5～80,000 yuan/cover.3. lack general about 30,000/cover the service life of mould.
Summary of the invention:
For solve existing both at home and abroad double-edged fine-toothed comb production cost height, have secondary pollution, problems such as yield rate is low, complex process, investment is big, die life is short, the present invention proposes a kind of high-performance dandruff comb clay sand one-piece casting method, promptly adopt the method for common clay sand Molding Casting high-performance double-edged fine-toothed comb, its concrete scheme is as follows:
With common clay sand is main Modeling Material, is mixed with moulding sand by adding bentonite, coal dust and water, specifically as follows by weight proportion:
Old clay-bonded sand newly: bentonite: coal dust: water=1: 0.05-0.06: 0.03-0.05: 0.03-0.04
By above-mentioned prescription, its specific embodiment and feature are as follows:
1, molding sand mixes system:
1. take by weighing clay-bonded sand, wherein old clay-bonded sand accounts for 95% of total sand weight, and new clay-bonded sand accounts for 5% of total sand weight; Take by weighing the 5-6% bentonite of total sand weight, the coal dust of 3-5% and the water of 3-4%.
2. add clay-bonded sand, bentonite, coal dust earlier, do and mixed 3-5 minute, add entry again and mixed system 5-7 minute.
3. molding sand is transported to appointed place, moulding district after mixed.
2, moulding:
1. moulding.According to the design feature of high-performance double-edged fine-toothed comb, adopt the backform machine modeling.The backform machine is established and has been adopted copper moulding mould in sandbox, the sandbox; With rotary screen facing sand is sieved earlier before the moulding, facing sand is added the careful tamping of sandbox, add lift behind the floor sand consolidation again.
2. sand mold is put.For the ease of field management and safety in production, with all sand mold marshallings, with molding sand the space between the sand mold is tamped one by one, wait to be cast.
3. press the case cast.Be put into the casting mold upper surface with useless double-edged fine-toothed comb, pressurized tank iron again, press case weight be casting weight 4-5 doubly; Cast is then treated to claw foundry goods again after the double-edged fine-toothed comb foundry goods cools off fully after cast finishes.
3, impeller blasting:
1. must erect during the double-edged fine-toothed comb ball blast hang, 6-8 minute ball blast time, up to being polished to till the surface do not have scab regularly placing behind the ramming.
2. must be in face of everyone during the fettler spark-out a secondary cubing, the polishing back is detected once through cubing oneself earlier, prevents to polish excessively, too short this type of problem of size takes place, polishing foundry goods regularly placing well.
3. the double-edged fine-toothed comb warehouse-in of having polished carries out that the depth of parallelism detects, size detection, and qualified double-edged fine-toothed comb regularly placing is to be painted to dry place etc.
4, japanning, packing: beat the buttress packing again after must drying after the double-edged fine-toothed comb japanning, prevent sticking lacquer, go into warehouse for finished product then.
In the above-mentioned prescription, described new, old clay-bonded sand is common 70-140 purpose sea sand.Because clay-bonded sand can reuse, be called old sand with the clay-bonded sand of crossing, just can reuse through simple fragmentation and screening.In order to save cost, old clay-bonded sand generally accounts for 95% of total sand weight approximately, and new clay-bonded sand accounts for 5% of total sand amount.
In the above-mentioned prescription, described bentonite is that (Bentonite) presses transliteration, is the moisture clay pit based on montmorillonite, and the chemical composition of montmorillonite is: (Al2, Mg3) [Si4O10] [OH] 2nH2O is because it has special nature.As: swelling, caking property, adsorptivity, catalytic, thixotropy, suspension and cation exchange or the like, so be widely used in each industrial circle.
In the above-mentioned prescription, described coal dust promptly advances factory's raw coal all through the washing of washing production line for using clean fine coal, and with blanking impurity such as gangue, coal slime, wooden unit wherein, its every physical and chemical index all meets or exceeds JB/T9222-1999 standard.The a small amount of coal dust of adding in molding sand, moulding-sand property thereby be able to obvious improvement, surface quality of continuous castings obviously improves, and percent defectives such as pore, scab, burning into sand obviously descend, and effectively reduce the castings production cost.
In the above-mentioned prescription, described water is running water.
In the above-mentioned technology, described backform machine is the special-purpose backform machine of inventor by transforming.
In the above-mentioned technology, described mould is copper mould, and this mould adopts Digit Control Machine Tool to process, and mould is provided with mounting groove and bayonet socket, and the installation dimension that this mounting groove and bayonet socket can satisfy double-edged fine-toothed comb requires and the monoblock cast requirement.
High-performance dandruff comb clay sand one-piece casting method of the present invention has following effect and advantage:
1, prescription and technology are simple, easy realization of industrialization;
2, adopt common clay sand instead of resins sand, can reduce the cost of raw material that double-edged fine-toothed comb is produced at double;
3, adopt common clay sand instead of resins sand, can not produce pernicious gases such as great amount of carbon dioxide in the production process, non-secondary pollution;
4, do not need releasing agent, can further reduce the production cost of double-edged fine-toothed comb;
5, adopt copper mould, the one-step casting moulding need not machining mounting groove and bayonet socket, can enhance productivity and saves equipment investment;
6, casting yield is up to more than 95%.
The specific embodiment
The present invention is described further below by embodiment, is necessary to be pointed out that at this: because the puddle mixer specification is in different size, present embodiment only is used for the present invention is further specified, but does not limit to its scope.
Embodiment 1:
By prescription, according to puddle mixer specification size, at first take by weighing 500 kilograms of clay-bonded sands, about 475 kilograms of wherein old clay-bonded sand, about 25 kilograms of new clay-bonded sand; Take by weighing 25 kilograms of bentonites, 20 kilograms of coal dusts, 15 kilograms in water; Add clay-bonded sand, bentonite, coal dust earlier, do and mixed 3 minutes, add entry again and mixed system 5 minutes, mix the molding sand that makes and transport to appointed place, moulding district.Secondly, check, cleaning backform machine and moulding mould, facing sand is sieved, add the careful tamping of sandbox, add lift behind the floor sand consolidation again with rotary screen; Neatly put in cast sand mold on-the-spot; Be put into the casting mold upper surface with useless double-edged fine-toothed comb, pressurized tank iron again, pressing case weight is 4 times of casting weight; Cast is then treated to claw the double-edged fine-toothed comb cast member again after the double-edged fine-toothed comb foundry goods cools off fully after cast finishes.Once more, the double-edged fine-toothed comb that casting is good is erect to hang and carry out impeller blasting in shot-blasting machine, during cleaning, fettler is on one side with the cubing size detection of polishing, the foundry goods regularly placing that polishing is good, carry out then that the depth of parallelism detects, size detection, qualified double-edged fine-toothed comb regularly placing is to be painted to dry place etc., beating buttress, packing, put in storage after the japanning.
Embodiment 2:
By prescription, according to puddle mixer specification size, at first take by weighing 700 kilograms of clay-bonded sands, about 665 kilograms of wherein old clay-bonded sand, about 35 kilograms of new clay-bonded sand; Take by weighing 42 kilograms of bentonites, 35 kilograms of coal dusts, 28 kilograms in water; Add clay-bonded sand, bentonite, coal dust earlier, do and mixed 5 minutes, add entry again and mixed system 7 minutes, mix the molding sand that makes and transport to appointed place, moulding district.Secondly, check, cleaning backform machine and moulding mould, facing sand is sieved, add the careful tamping of sandbox, add lift behind the floor sand consolidation again with rotary screen; Neatly put in cast sand mold on-the-spot; Be put into the casting mold upper surface with useless double-edged fine-toothed comb, pressurized tank iron again, pressing case weight is 4 times of casting weight; Cast is then treated to go out the double-edged fine-toothed comb cast member again after the double-edged fine-toothed comb foundry goods cools off fully after cast finishes.Once more, the double-edged fine-toothed comb that casting is good is erect to hang and carry out impeller blasting in shot-blasting machine, during cleaning, fettler is on one side with the cubing size detection of polishing, the foundry goods regularly placing that polishing is good carries out then that the depth of parallelism detects, size detection, and qualified double-edged fine-toothed comb regularly placing is to be painted to dry place etc.Beat buttress, packing, warehouse-in after the japanning.
Claims (4)
1, a kind of high-performance dandruff comb clay sand one-piece casting method is characterized in that, is main Modeling Material with common clay sand, is mixed with moulding sand by adding bentonite, coal dust and water, and is specifically as follows by weight proportion:
Old clay-bonded sand newly: bentonite: coal dust: water=1: 0.05-0.06: 0.03-0.05: 0.03-0.04.
2, according to claim 1, a kind of high-performance dandruff comb clay sand one-piece casting method is characterized in that:
A, molding sand mix system:
1. take by weighing clay-bonded sand, press the clay-bonded sand gross weight, take by weighing the 5-6% bentonite of total sand weight, the coal dust of 3-5% and the water of 3-4%.
2. add clay-bonded sand, bentonite, coal dust earlier, do and mixed 3-5 minute, add entry again and mixed system 5-7 minute.
3. molding sand is transported to appointed place, moulding district after mixed.
B, moulding:
1. moulding.Adopt the backform machine modeling, with rotary screen facing sand is sieved earlier before the moulding, facing sand is added the careful tamping of sandbox, add lift behind the floor sand consolidation again.
2. sand mold is put.For the ease of field management and safety in production, with all sand mold marshallings, with molding sand the space between the sand mold is tamped one by one, wait to be cast.
3. press the case cast.Be put into the casting mold upper surface with useless double-edged fine-toothed comb, pressurized tank iron again, press case weight be casting weight 4-5 doubly, cast is then treated to claw foundry goods again after the double-edged fine-toothed comb foundry goods cools off fully after cast finishes.
C, impeller blasting:
1. must erect during the double-edged fine-toothed comb ball blast hang, 6-8 minute ball blast time, up to being polished to till the surface do not have scab regularly placing behind the ramming.
2. must be in face of everyone during the fettler spark-out a secondary cubing, the polishing back is detected once through cubing oneself earlier, prevents to polish excessively, too short this type of problem of size takes place, polishing foundry goods regularly placing well.
3. the double-edged fine-toothed comb warehouse-in of having polished carries out that the depth of parallelism detects, size detection, and qualified double-edged fine-toothed comb regularly placing is to be painted to dry place etc.
D, japanning, packing: beat the buttress packing again after must drying after the double-edged fine-toothed comb japanning, prevent sticking lacquer, go into warehouse for finished product then.
3, according to claim 2, a kind of high-performance dandruff comb clay sand one-piece casting method, described new, old clay-bonded sand is common 70-140 purpose sea sand, it is characterized in that old clay-bonded sand accounts for 95% of total sand weight, new clay-bonded sand accounts for 5% of total sand weight.
4, according to claim 2; a kind of high-performance dandruff comb clay sand one-piece casting method; described backform machine modeling; it is characterized in that; moulding mould in the backform machine sandbox is copper mould; and this copper mould is provided with mounting groove and bayonet socket, and the installation dimension that this mounting groove and bayonet socket can satisfy double-edged fine-toothed comb requires and the monoblock cast requirement.
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| CN2009100196406A CN101508006B (en) | 2009-03-06 | 2009-03-06 | High-performance dandruff comb clay sand one-piece casting method |
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| CN2009100196406A CN101508006B (en) | 2009-03-06 | 2009-03-06 | High-performance dandruff comb clay sand one-piece casting method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101934342A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Molding sand for casting pressure plates |
| CN101934344A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Moulding sand for vertically divided box-free shoot-squeeze moulding line |
| CN101961767A (en) * | 2010-09-09 | 2011-02-02 | 周道虎 | Formula of brake drum clay sand molding |
| CN103722120A (en) * | 2013-11-20 | 2014-04-16 | 芜湖国鼎机械制造有限公司 | Formula of clay sand model of heavy truck support |
| CN106077421A (en) * | 2016-06-01 | 2016-11-09 | 苏州东海玻璃模具有限公司 | A kind of gravitational casting molding sand and preparing process thereof |
| CN106734894A (en) * | 2016-12-08 | 2017-05-31 | 河北建支铸造集团有限公司 | Facing sand is prepared and maintenance method in a kind of sand casting process |
| CN107305393A (en) * | 2016-04-20 | 2017-10-31 | 比亚迪股份有限公司 | Unmanned plane and its control method |
| CN109070189A (en) * | 2016-03-25 | 2018-12-21 | 依玛斯矿物美国公司 | Composition and its application method in sand casting |
| CN109807642A (en) * | 2019-03-06 | 2019-05-28 | 济南海马机械设计有限公司 | A kind of rain perforaled strainer automatic production line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1155561A (en) * | 1996-01-24 | 1997-07-30 | 徐丕森 | Lightweight strengthened drainage grid and its manufacture |
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- 2009-03-06 CN CN2009100196406A patent/CN101508006B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101934342A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Molding sand for casting pressure plates |
| CN101934344A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Moulding sand for vertically divided box-free shoot-squeeze moulding line |
| CN101961767A (en) * | 2010-09-09 | 2011-02-02 | 周道虎 | Formula of brake drum clay sand molding |
| CN101961767B (en) * | 2010-09-09 | 2012-09-05 | 周道虎 | Formula of brake drum clay sand molding |
| CN103722120A (en) * | 2013-11-20 | 2014-04-16 | 芜湖国鼎机械制造有限公司 | Formula of clay sand model of heavy truck support |
| CN109070189A (en) * | 2016-03-25 | 2018-12-21 | 依玛斯矿物美国公司 | Composition and its application method in sand casting |
| US10994326B2 (en) | 2016-03-25 | 2021-05-04 | Imerys Usa, Inc. | Compositions and methods of use thereof in sandcasting |
| CN107305393A (en) * | 2016-04-20 | 2017-10-31 | 比亚迪股份有限公司 | Unmanned plane and its control method |
| CN106077421A (en) * | 2016-06-01 | 2016-11-09 | 苏州东海玻璃模具有限公司 | A kind of gravitational casting molding sand and preparing process thereof |
| CN106734894A (en) * | 2016-12-08 | 2017-05-31 | 河北建支铸造集团有限公司 | Facing sand is prepared and maintenance method in a kind of sand casting process |
| CN109807642A (en) * | 2019-03-06 | 2019-05-28 | 济南海马机械设计有限公司 | A kind of rain perforaled strainer automatic production line |
| CN109807642B (en) * | 2019-03-06 | 2022-02-18 | 济南海马机械设计有限公司 | Rainwater grate automation line |
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