CN102029358A - Expendable pattern for manufacturing corner fittings of container and manufacturing method and using method thereof - Google Patents
Expendable pattern for manufacturing corner fittings of container and manufacturing method and using method thereof Download PDFInfo
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- CN102029358A CN102029358A CN 201010587093 CN201010587093A CN102029358A CN 102029358 A CN102029358 A CN 102029358A CN 201010587093 CN201010587093 CN 201010587093 CN 201010587093 A CN201010587093 A CN 201010587093A CN 102029358 A CN102029358 A CN 102029358A
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Abstract
The invention provides an expendable pattern for manufacturing corner fittings of a container. The expendable pattern comprises a casting latex channel, a first expendable pattern and a second expendable pattern, wherein an expendable pattern latex channel is formed on a side external wall of the first expendable pattern; a first through hole and a plurality of grooves are formed on the first expendable pattern; a second through hole and a third through hole are formed on a wall of the second expendable pattern; a plurality of connecting bumps are formed on the second expandable pattern; the grooves and the connecting bumps are in inserted joint; the expendable pattern latex channel and the casting latex channel are in glued and fixed connection; the casting latex channel is prismatic; the connection position of the grooves and the connecting bumps is provided with gummed paper which is glued and fixed with the first expendable pattern and the second expendable pattern. The process is simple; the expandable pattern has a rational pattern structure, low cost and high production efficiency; and the produced corner fittings of the container have smooth surfaces and low casting defect rate.
Description
Technical field:
The present invention relates to the technical field of container parts and mould thereof, particularly a kind of disappearance mould that is used to make container angle and manufacturing thereof, using method.
Background technology:
Be located at of the lifting of the corner fittings in each bight of container at container; carrying; fixing; pile and fasten solid the grade in the middle of the operation; all play a part key, generally say, any active force that casing bore also almost transmits by corner fittings entirely; as the outer most edge of casing, corner fittings also plays a part the protection FCL.At present, the conventional cast method of container angle is for using the sand casting, even make the mould of container angle with water-glass sand, place in the sandbox, after molten steel was poured mould and moulding into, water-glass sand was promptly scrapped, and water-glass sand can't be recycled, this manufacture method, working strength of workers is big, the manufacturing cost height, and environmental pollution is serious, and production efficiency is low, and a sandbox only can be cast 4 container angles.In addition, the water-glass sand mould also easily forms sand holes, casting flaws such as pore on the surface of container angle, cause the container angle produced rough, influence the appearance quality, need processing polishing again, this has increased manufacturing process and cost of manufacture again virtually.
Compare with traditional sand casting method technology, it is good that lost foam casting has a casting quality, dimensional accuracy height, any surface finish, advantage such as with low cost.Along with development of science and technology, disappearance mould technology provides the means of free design space and casting elaboration, and lost foam casting added value height has following comprehensive advantage: the foaming mould life-span is long, can produce thousands of bubble face mould samples, and the withdrawing pattern degree is little, and wall thickness is even; Casting weight can reduce about 30%; Reduce assembling and realize monoblock cast; Alleviate or eliminate casting cleaning; Machining welding and dynamic balancing measurement; Improve mechanical castings and table fineness; Improve each combination property of foundry goods characteristic etc.
So far, disappearance mould technology is not used in the making field of container angle as yet, no matter is the manufacturing of apperance and the use of apperance, all still in exploration.For solving the problems of the technologies described above, it is simple to press for a kind of technology of appearance, and disappearance mould mould structure is reasonable, and cost is low, high and the container angle smooth surface of producing of production efficiency, the casting flaw rate is low is used to make the disappearance mould of container angle and manufacturing thereof, using method.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that exists in the prior art, provide a kind of technology simple, disappearance mould mould structure is reasonable, cost is low, high and the container angle smooth surface of producing of production efficiency, the casting flaw rate is low is used to make the disappearance mould of container angle and manufacturing thereof, using method.
For realizing the object of the invention, the invention provides a kind of disappearance mould that is used to make container angle, comprise casting Jiao Dao, disappearance mould one and disappearance mould two, wherein, one side outer wall of described disappearance mould one is provided with disappearance mould Jiao Dao, described disappearance mould one is provided with first through hole, further be provided with some grooves on the described disappearance mould one, the wall of described disappearance mould two is provided with second through hole and third through-hole, further be provided with some connection bumps on the described disappearance mould two, plug together between described groove and the described connection bump and be connected.
Described disappearance mould Jiao Dao, described first through hole, described groove and described disappearance mould one are one-body molded during fabrication; Described connection bump, described second through hole, described third through-hole and described disappearance mould two are one-body molded during fabrication, be adhesively fixed between described disappearance mould Jiao Dao and the described casting glue road and be connected, the prism that is shaped as of the described Jiao Dao that casts, the link position of described groove and described connection bump further is provided with gummed paper, and is gluing fixing between described gummed paper and described disappearance mould one, the described disappearance mould two.
Purpose to better implement the present invention, the present invention also provides a kind of manufacture method that is used to make the disappearance mould of container angle, wherein, comprises the steps:
A, the suitable STMMA bead of selection: the diameter range of selecting bead detects the moisture content and the fugitive constituent of bead at 0.45-0.60mm;
B, pre-sending out: batch (-type) steam prefoaming machine passes through water separator earlier, get rid of the excessive moisture in the machine fully, then the STMMA bead is sent into batch (-type) steam prefoaming machine, the jet chimney pressure of batch (-type) steam prefoaming machine is controlled at 0.1-0.2Mpa, expanding chamber pressure is controlled at 0.03-0.03Mpa, temperature is 90-100 degree centigrade, sends out time 40-60 second in advance;
C, slaking: the slaking control time of spherolite is 12-48 hour, and in maturing process, the control point of fugitive constituent is 7-8%;
D, the bead after the slaking is fills up in the disappearance mould mould, makes disappearance mould one and disappearance mould two behind the cooling forming;
E, enter drying shed: the disappearance mould of first one-step forming is placed on the shelf that are provided with layering, allows the disappearance mould is omnibearing to dispel the heat, and puts into 45-55 degree centigrade drying shed after 1-3 days again;
F, synthetic disappearance mould: the connection bump of the groove of disappearance mould one and disappearance mould two plugged together link together, and twine a circle gummed paper at link position, by gummed paper further with disappearance mould one and disappearance mould two gluing fixing.
Described steps d further comprises:
Disappearance mould mould and die preheating: preheating is used to shorten the disappearance mold forming time, the condensed water when reducing foaming in the mold cavity;
The bead filling: filling is adopted suction filling or binder filling or is pressed and inhale filling, and bead density is controlled at 23 grams per liters during filling;
Hot briquetting: it is balanced that disappearance mould mold integral temperature is risen, and when bead is heated when reaching the bead softening point, and insulation, pressurize make bead continue to expand to merge;
Cooling: want during cooling evenly, fully, the mould of avoiding disappearing forms three foaming,
The demoulding: adopt the tilting stripping means.
5, a kind of using method as the disappearance mould that is used to make container angle as described in the claim 2 is characterized in that, comprises the steps:
For container angle is coated with the step of hanging coating,
The step of oven dry,
The step that connects the Jiao Dao and the sandbox of packing into,
Bleeding makes the step of sandbox formation negative pressure,
The step of molten steel casting,
The step of the cutting behind the outlet, polishing, ball blast.
Purpose to better implement the present invention, the present invention provides a kind of using method that is used to make the disappearance mould of container angle again, wherein, and the described step of hanging coating that is coated with for container angle, further comprise the step that disposes coating: be specially, dispose following raw material according to the weight fraction ratio:
Silica flour 80-85 part, cellulose 8-15 part, bentonite 1-3 part, activating agent 0.1-0.2 part, white glue with vinyl 5-8 part, water 100-150 part.
The step of configuration: earlier with silica flour, cellulose, bentonite and water are put in the soaking box and are fully stirred, mixing time is 30-35 minute, again activating agent and white glue with vinyl are dropped in the soaking box, fully stirred again 20-25 minute, make coating, for being coated with to hang, uses the disappearance mould, be coated with when hanging, the container angle mould that disappears is immersed in the soaking box, and normal temperature soaked 5-10 minute down, and the disappearance mould is pulled out in soaking box, meet the part be coated with hang incomplete, mend brush with brush, the inwall of the mould of guaranteeing to disappear all is coated with outer wall and hangs with coating, the outer wall of the Jiao Dao that casts also is coated with hangs with coating.
Described cellulose is a methylcellulose, any one in hydroxyethylcellulose or the hydroxypropyl methylcellulose; Described surfactant is a stearic acid, neopelex, lecithin, fatty glyceride, any one in the polysorbate; The weight fraction ratio of composition is 45 parts of vinylacetates, 5 parts of polyvinyl alcohol, 4 parts of dibutyl phthalates, 1 part of octanol, 0.1 part of ammonium persulfate, 44.9 parts in water in the described white glue with vinyl.
In the step of described oven dry, the temperature of oven dry is the 45-55 degree, and drying time is 2-3 days; In the step of the described connection Jiao Dao and the sandbox of packing into, disappearance mould Jiao Dao on the disappearance mould is adhesively fixed and is connected with casting Jiao Dao, make the both sides of casting Jiao Dao be connected with some disappearance moulds, the casting Jiao Dao that will connect the disappearance mould then places in the sandbox, with the water-glass sand sandbox of packing into, utilize the sandbox hanger that sandbox is lifted to the compacting platform, sand is wipeed off compacting.
Described bleeding makes sandbox form the step of negative pressure, the aspirating hole that buries the sandbox of the mould that disappears is connected on the aspiration pump, bled 5-15 minute, make and form negative pressure in the sandbox, cup is placed the sandbox top, the below outlet of cup links to each other with casting Jiao Dao, the step of described molten steel casting: the top that molten steel is winched to cup with crane, molten steel waters on casting Jiao Dao along cup, the disappearance mould is met molten steel and is rapidly disappeared, and the position of disappearance mould forms cavity, and molten steel trickles in cavity, after the 15-30 that stops to cast minute, with the container angle outlet after the casting.
The step of the cutting behind the outlet, polishing, ball blast: container angle and Jiao Dao behind the outlet link together, use cutting machine that container angle is cut down successively, and, after the polishing container angle is dropped into ball blast in the shot-blasting machine in the cutting part polishing, form the container angle finished product.
The invention has the advantages that, utilize disappearance mould technology to make container angle, compare with conventional cast technology, lost foam casting added value height has following comprehensive advantage: the foaming mould life-span is long, can produce thousands of bubble face mould samples, the withdrawing pattern degree is little, and wall thickness is even; Casting weight can reduce about 30%; Reduce assembling and realize monoblock cast; Alleviate or eliminate casting cleaning; Machining welding and dynamic balancing measurement; Improve mechanical castings and table fineness; Improve each combination property of foundry goods characteristic.And a sandbox can be produced container angle 50-100 spare, and the production efficiency that more traditional sand casting is made container angle has improved 12.5 times-25 times.
The disappearance mode structure is reasonable among the present invention, can once produce hundreds of container angle disappearance mould one and disappearance mould two by disappearance mould mould, again disappearance mould one and disappearance mould two are plugged together be connected and with gummed paper fixing after, the disappearance mould can be adhesively fixed with Jiao Dao is connected, and is coated with extension through coating, bury sandbox, the formation negative pressure of bleeding, cast molding is cut behind the outlet, polishing, ball blast makes finished product.Technology of the present invention is simple, and disappearance mould mould structure is reasonable, and cost is low, production efficiency height and the container angle smooth surface of producing, and the casting flaw rate is low.
Description of drawings:
Fig. 1 is the schematic diagram of disappearance mould one among the present invention.
Fig. 2 is the schematic diagram of disappearance mould two among the present invention.
Fig. 3 is disappearance mould among the present invention and state diagram after the Jiao Dao that casts is connected.
Fig. 4 is the side view of sandbox among the present invention.
Fig. 5 is the vertical view of sandbox among the present invention.
Fig. 6 is the preparation method flow chart of the disappearance mould of container angle among the present invention.
Fig. 7 is for utilizing the molded flow chart of making the using method of container angle that disappears among the present invention.
The accompanying drawing sign:
1, groove 2, disappearance mould glue road 3, first through hole
4, connection bump 5, second through hole 6, third through-hole
7, gummed paper 8, casting glue road 9, disappearance mould
10, sandbox 11, hanger 12, aspirating hole
13, tracheae
The specific embodiment:
As depicted in figs. 1 and 2, Fig. 1 is the schematic diagram of disappearance mould one among the present invention.Fig. 2 is the schematic diagram of disappearance mould two among the present invention.Wherein, comprise casting glue road 8, disappearance mould one and disappearance mould two, one side outer wall of disappearance mould one is provided with disappearance mould glue road 2, disappearance mould one is provided with first through hole 3, further be provided with some grooves 1 on the disappearance mould one, the wall of disappearance mould two is provided with second through hole 5 and third through-hole 6, further is provided with some connection bumps 4 on the disappearance mould two, plugs together between groove 1 and the connection bump 4 to be connected.Disappearance mould glue road 2, first through hole, groove and disappearance mould one are one-body molded during fabrication; Connection bump 4, second through hole 5, third through-hole 6 and disappearance mould two are one-body molded during fabrication, be adhesively fixed between disappearance mould glue road 2 and the casting glue road 8 and be connected, casting glue road 8 be shaped as prism, advantageous cross sections is tetragonal prism, groove 1 further is provided with gummed paper 7 with the link position of connection bump 4, and is gluing fixing between gummed paper 7 and disappearance mould one, the disappearance mould two.
As shown in Figure 6, Fig. 6 is the preparation method flow chart of the disappearance mould of container angle among the present invention.Wherein, be used to make the manufacture method of the disappearance mould of container angle, comprise the steps:
A, the suitable STMMA bead of selection: the diameter range of selecting bead detects the moisture content and the fugitive constituent of bead at 0.45-0.60mm;
B, pre-sending out: batch (-type) steam prefoaming machine passes through water separator earlier, get rid of the excessive moisture in the machine fully, then the STMMA bead is sent into batch (-type) steam prefoaming machine, the jet chimney pressure of batch (-type) steam prefoaming machine is controlled at 0.1-0.2Mpa, expanding chamber pressure is controlled at 0.03-0.03Mpa, temperature is 90-100 degree centigrade, sends out time 40-60 second in advance;
C, slaking: the slaking control time of spherolite is 12-48 hour, and in maturing process, the control point of fugitive constituent is 7-8%;
D, the bead after the slaking is fills up in the disappearance mould mould, makes disappearance mould one and disappearance mould two behind the cooling forming;
E, enter drying shed: the disappearance mould of first one-step forming is placed on the shelf that are provided with layering, allows the disappearance mould is omnibearing to dispel the heat, and puts into 45-55 degree centigrade drying shed after 1-3 days again;
F, synthetic disappearance mould: the connection bump of the groove of disappearance mould one and disappearance mould two plugged together link together, and twine a circle gummed paper at link position, by gummed paper further with disappearance mould one and disappearance mould two gluing fixing.
4, according to the described manufacture method that is used to make the disappearance mould of container angle of claim 3, it is characterized in that described steps d further comprises:
Disappearance mould mould and die preheating: preheating is used to shorten the disappearance mold forming time, the condensed water when reducing foaming in the mold cavity;
The bead filling: filling is adopted suction filling or binder filling or is pressed and inhale filling, and bead density is controlled at 23 grams per liters during filling;
Hot briquetting: it is balanced that disappearance mould mold integral temperature is risen, and when bead is heated when reaching the bead softening point, and insulation, pressurize make bead continue to expand to merge;
Cooling: want during cooling evenly, fully, the mould of avoiding disappearing forms three foaming,
The demoulding: adopt the tilting stripping means.
Selecting bead is a vital step in the production of disappearance mould, at present, there are three kinds with the product of disappearance mould production apperance: EPS, STMMA, EPMMA, that commonly used is STMMA, STMMA is the copolymer resins bead, be mainly used in and make the disappearance mould, domestic major vendor is a Hangzhou Kester chemical industry Co., Ltd.STMMA is that the macromolecular polymerization reaction by polyethylene and methymethacrylate one-step method generates.The carbon increasing amount of STMMA is generally≤and 0.06%, (6 carbon are once), and the holding time is three months (quality stability also compare EPS want high), EPS and STMMA comparison sheet are as follows:
When selecting the bead granularity, need size according to production foundry goods, wall thickness, the quality requirement on surface waits and selects the bead granularity, is generally thick 1/10th the selecting of the thin-walled of foundry goods, such as: the foundry goods that 7mm is thin, / 10th beads of 0.7mm just, select STMMA-1#0.60-0.90mm so,, can select thinner specification if cast(ing) surface is had relatively high expectations.The bead specification table is as follows:
| Trade mark specification | Particle size range mm |
| STMMA-1# | 0.60-.090 |
| STMMA-2# | 0.45-0.60 |
| STMMA-3A# | 0.40-0.55 |
| STMMA-3# | 0.35-0.50 |
| STMMA-4# | 0.25-0.35 |
Shrinkage factor when EPS makes white mould: 0.3-0.8%, STMMA make the shrinkage factor 0.1-0.3% that white mould is, the structure of mould is different with size, and heating temperature is also different, the difference of environment temperature during the apperance slaking, and contraction ratio is also changing.The store method of STMMA: deepfreeze (≤10 degree) or be kept at aeration-drying preferably, there is not the sunlight direct projection, shady and cool place when opening or do not use fully, must be tightened sack again, and bung is good, to prevent the loss of pentane.
Being not only in the pre-process needs high-quality bead, also very important with a pre-equipment of fashion, in the prefoam process, need make it softening and expansion with the Steam Heating bead, and in the whole process, the Density Distribution of foam must be controlled effectively.
The jet chimney pressure of batch (-type) steam prefoaming machine must be stablized and is controlled at 0.1-0.2Mpa (after the pressure regulation), and expanding chamber pressure is controlled at 0.03-0.03Mpa, and temperature is 90-100 degree centigrade, time 40-60 second.The water content control of steam is also particularly important, and entering the pre-preceding steam of equipment of sending out need be earlier by water separator, the excessive moisture in the eliminating steam of composition.The specific gravity control of bead depends on the size of original bead, the thickness size of model, and according to following table, the density 20-22g/L of bead among the present invention.
| Specification limit | SEMMA-2# | SEMMA-3A# | SEMMA-3# | SEMMA-4# |
| Specific gravity range | 19-21g/L | 20-22g/L | 21-23g/L | 23-26g/L |
Before bead entered prefoaming machine, its fugitive constituent, water content detected in the most primary operating room.Reduce wasting phenomenon in the production.
The detection of moisture content only need reach≤and 1%, but fugitive constituent can be because of every lot number, not coexisting of every factor such as weather constantly changes, the quality control pickup that a redness all can be arranged in each barrel of STMMA that generally dispatches from the factory, the fugitive constituent data of this batch can be described, but these data also have different the variation, need the user to detect voluntarily, to reduce quality waste and the deviation that causes owing to unstable
The data value of fugitive constituent detects≤9.5%, then will be controlled at the time about 40 seconds; 〉=9.5%, will be controlled at the time about 60 seconds.STMMA pre-sends out the time and can not surpass one fen semispecies, can consume blowing agent like this, thereby influence the effect (particle surperficial not bright and clean, the interior storehouse of model bonding bad etc.) of post forming.
Slaking
Pre-expanded bead is being used for the molding sample, must put into and carry out maturation process in the slaking storehouse.The bead that will distribute in advance during slaking has a stable process, the variation of bead in this stabilization process; The moisture of running away naturally recovers elasticity, improves volatile content, lays a solid foundation for producing better white mould.
In whole maturing process, can find out whether particle is normally sent out in advance by naked eyes; The general lustrous surface of good bead, circle is very pinched certain screen resilience with hand; If send out bad in advance, surface blistering, some can become ellipse, does not have elasticity, and fugitive constituent also run relatively fast especially.
The slaking control time of spherolite was generally 12-48 hour, and in curing process control, the control point of fugitive constituent is preferably 7-8%, to reduce the possibility of three foaming of bead after moulding.
Moulding (preheating-filling-heating-cooling-demoulding)
When volatile content mensuration reaches needed index, can say in the bead filling progressive die tool and carry out moulding.Domestic the most common moulding process has two kinds: manual mould of digester (-tor) formula and machine mould, but main technology controlling and process program still is identical.
Mould and die preheating-bead filling-hot briquetting-cooling-demoulding
1, mould and die preheating: the purpose of preheating is in order to shorten molding time, the condensed water when improving the quality of white mold forming and reducing foaming in the mold cavity.
2, bead filling: filling is the important procedure that apperance is made, and filling is inhomogeneous or just can not obtain high-quality and qualified white mould during consolidation.Adopt the method for filling that the suction filling is arranged, binder filling and press and inhale filling etc., present domestic employing be the suction filling, this feed way has certain drawback, adopts the mode of suction filling as certain factory, lifts mould when reinforced,
Though bead is sent out density in advance and is controlled at about 23 grams per liters, because it is reinforced to lift mould, apperance weight is overweight, the bead fusion on apperance surface is inconsistent, and (local burning or local fusion are bad,) apperance global density inhomogeneous (owing to lift mould, apperance planar portions bit density is too high) this bring destabilizing factor for follow-up casting quality.Concrete which kind of placement method and the pressure of gas sealed in electric of adopting will see that how the mold cavity structure complexity decide, wherein the pressure-and-suction type filling for thin-walled and structure comparatively complicated die be filled with very big effect, help the ganoid apperance of production complete sum.
3, hot briquetting: according to differences such as apperance size, structure, wall thickness, the final temperature of steam pressure and mould during the control heating, it is balanced that the mold integral temperature is risen, and avoids heating too fast mold temperature as far as possible and rise unbalanced and cause the bead fusion of apperance surface to close inconsistent phenomenon.In the hot briquetting process, bead to be heated and reach the temperature of bead softening point, and be incubated.Pressurize makes bead continue the fusion of expanding.In the hot briquetting process, require can control effectively to temperature, and according to apperance clinkering quality and when heating mould temperature steam pressure and heat time heating time in the die cavity when adjusting heating.Steam pressure and heat time heating time are to decide with different foaming density according to different moulds in the concrete heating-up temperature, die cavity.Can not carry condensed water secretly in the heating steam, the wall thickness of mould is wanted evenly, and breather plug is arranged and wanted rationally, otherwise influences the quality that apperance surface bead merges.
4, cooling: cold purpose of going is to make the apperance typing and have certain intensity and rigidity, so cooling is wanted evenly, fully.The heat of the thermoplastic foam apperance of moulding just is by various heat transfer paths in the mould, spill in ambient air or the cooling medium, but because the apperance foam is the non-conductor of heat, the phenomenon that the temperature of core is also very high the curing molding that is cooled on top layer usually appears, during cooling.At this moment, not enough as cooling and shaping, though epidermis has cured moulding, but a large amount of waste heat amounts of core can continue to think unofficial biography, and skin temperature is gone up, and add the expansive force of apperance core foam, just may make the apperance warpage or the destruction of having finalized the design, be referred to as three foaming.Will pay special attention to cooling water temperature in cooling procedure can not be too low, and hydraulic pressure can not be too big, and cool time can not be oversize, otherwise apperance and apperance surface have the phenomenon of collapsing.
5, the demoulding: the inside, apperance cooling back of moulding just is in decompression state, and is softer, if the demoulding is improper, the apperance surface is with regard to easy damaged, and distortion is so will take different stripping means for the apperance of different structure.
Enter drying shed (the test volatile content is also carried out record)
When one complete, after qualified apperance is made, the placement at initial stage preferably has the shelf of a layering, can allow apperance is omnibearing dispels the heat, put into 50 degrees centigrade drying shed after 1-3 days again, must the test fugitive constituent of apperance before coating and the content of moisture, the fugitive constituent detected value is necessary≤and 2%.
Fugitive constituent (bead) method of testing
Instrument: assay balance
Diameter 60*30 band ground measuring cup
Drier (putting silica gel)
Step:
1, accurately the measuring cup that dries to constant weight of city (claim accurate to 0.0001g) is designated as A
2, accurately take by weighing 1-2g bead sample (claiming accurate) and be designated as B to 0.0001g
3, this sample is placed the baking oven 1 hour of 150 degree constant temperature
4, remove to be placed on and be cooled to weighing after the room temperature in the drier, be designated as C
5, calculate: fugitive constituent %=(C-A)/B-1*100%.
A: the weight of empty bottle
B: the weight of the bead of weighing itself
C: the bottle that takes out adds the weight after bead shrinks:
The moisture content method of testing
Instrument: assay balance
Diameter 60*30 band ground measuring cup
Drier (putting silica gel)
Step:
Take by weighing sky measuring cup heavy (being accurate to 0.0001g) and be designated as A
Take by weighing 2-3g (being accurate to 0.0001g) sample, be designated as B
Sample is placed drying bottle,
24 as a child took out weighing, were designated as C
Calculate: moisture %=C-B-A/B*100%
It is as shown in the table that molded the making in the process that disappear, disappearance mould produce the reason and the solution of defective:
As Fig. 3-Fig. 5 and shown in Figure 7, wherein, Fig. 3 is disappearance mould among the present invention and state diagram after the Jiao Dao that casts is connected.Fig. 4 is the side view of sandbox among the present invention.Fig. 5 is the vertical view of sandbox among the present invention.Fig. 7 is for utilizing the molded flow chart of making the using method of container angle that disappears among the present invention.Wherein, be used to make the using method of the disappearance mould of container angle, comprise the steps:
For container angle is coated with the step of hanging coating,
The step of oven dry,
The step that connects the Jiao Dao and the sandbox of packing into,
Bleeding makes the step of sandbox formation negative pressure,
The step of molten steel casting,
The step of the cutting behind the outlet, polishing, ball blast.
For container angle is coated with the step of hanging coating, further comprise the step that disposes coating: be specially, dispose following raw material according to the weight fraction ratio:
Silica flour 80-85 part, cellulose 8-15 part, bentonite 1-3 part, activating agent 0.1-0.2 part, white glue with vinyl 5-8 part, water 100-150 part.
The step of configuration: silica flour, cellulose, bentonite and water are put in the soaking box fully stirred earlier, mixing time is 30-35 minute, again activating agent and white glue with vinyl are dropped in the soaking box, fully stirred again 20-25 minute, make coating, for being coated with to hang, uses the disappearance mould, be coated with when hanging, in immersion of disappearance mould and soaking box, normal temperature soaked 5-10 minute down, and the disappearance mould is pulled out in soaking box, meet the part be coated with hang incomplete, mend brush with brush, the inwall of the mould of guaranteeing to disappear all is coated with outer wall and hangs with coating, the outer wall of the Jiao Dao that casts also is coated with hangs with coating.
Cellulose is a methylcellulose, any one in hydroxyethylcellulose or the hydroxypropyl methylcellulose; Surfactant is a stearic acid, neopelex, lecithin, fatty glyceride, any one in the polysorbate; The weight fraction ratio of composition is 45 parts of vinylacetates, 5 parts of polyvinyl alcohol, 4 parts of dibutyl phthalates, 1 part of octanol, 0.1 part of ammonium persulfate, 44.9 parts in water in the white glue with vinyl.
In the step of oven dry, the temperature of oven dry is the 45-55 degree, and drying time is 2-3 days; Connect in the step of the Jiao Dao and the sandbox of packing into, disappearance mould glue road 2 on the disappearance mould is adhesively fixed with casting glue road 8 is connected, make the both sides in casting glue road 8 be connected with some disappearance moulds, the casting glue road 8 that will connect the disappearance mould then places in the sandbox 10, with the water-glass sand sandbox 10 of packing into, utilize the hanger 11 of sandbox 10 that it is lifted to the compacting platform, sand is wipeed off compacting.
Bleed and make sandbox form the step of negative pressure, the aspirating hole 12 that buries the sandbox 10 of the mould that disappears is connected on the aspiration pump, bled 5-15 minute, be provided with many tracheaes 13 in the sandbox 10, tracheae 13 is communicated with for 12 the casees with aspirating hole, tracheae 13 is positioned at the bottom of sandbox 10, make after bleeding and form negative pressure in the sandbox, cup is placed sandbox 10 tops, the below outlet of cup links to each other with casting glue road 8, the step of described molten steel casting: molten steel is winched to the top of cup with crane, and molten steel waters on casting glue road 8 along cup, and the disappearance mould is met molten steel and rapidly disappeared, the position of disappearance mould forms cavity, molten steel trickles in cavity, after the 15-30 that stops to cast minute, with the container angle outlet after the casting.
The step of the cutting behind the outlet, polishing, ball blast: the container angle behind the outlet links together with casting Jiao Dao (Jiao Dao that casts this moment has been metal), use cutting machine that container angle is cut down successively, and polish at cutting part, after the polishing container angle is dropped into ball blast in the shot-blasting machine, form the container angle finished product.
The conventional cast method is compared with the present invention:
In sum, it is simple to the invention provides a kind of technology, and disappearance mould mould structure is reasonable, and cost is low, the high and container angle smooth surface of producing of production efficiency, and the casting flaw rate is low is used to make the disappearance mould of container angle and manufacturing thereof, using method.
Claims (10)
1. disappearance mould that is used to make container angle, comprise casting Jiao Dao, disappearance mould one and disappearance mould two, it is characterized in that, one side outer wall of described disappearance mould one is provided with disappearance mould Jiao Dao, described disappearance mould one is provided with first through hole, further be provided with some grooves on the described disappearance mould one, the wall of described disappearance mould two is provided with second through hole and third through-hole, further be provided with some connection bumps on the described disappearance mould two, plug together between described groove and the described connection bump and be connected.
2. according to the described disappearance mould that is used to make container angle of claim 1, it is characterized in that described disappearance mould Jiao Dao, described first through hole, described groove and described disappearance mould one are one-body molded during fabrication; Described connection bump, described second through hole, described third through-hole and described disappearance mould two are one-body molded during fabrication, be adhesively fixed between described disappearance mould Jiao Dao and the described casting glue road and be connected, the prism that is shaped as of the described Jiao Dao that casts, the link position of described groove and described connection bump further is provided with gummed paper, and is gluing fixing between described gummed paper and described disappearance mould one, the described disappearance mould two.
3. the manufacture method as the disappearance mould that is used to make container angle as described in the claim 2 is characterized in that, comprises the steps:
A, the suitable STMMA bead of selection: the diameter range of selecting bead detects the moisture content and the fugitive constituent of bead at 0.45-0.60mm;
B, pre-sending out: batch (-type) steam prefoaming machine passes through water separator earlier, get rid of the excessive moisture in the machine fully, then the STMMA bead is sent into batch (-type) steam prefoaming machine, the jet chimney pressure of batch (-type) steam prefoaming machine is controlled at 0.1-0.2Mpa, expanding chamber pressure is controlled at 0.03-0.03Mpa, temperature is 90-100 degree centigrade, sends out time 40-60 second in advance;
C, slaking: the slaking control time of spherolite is 12-48 hour, and in maturing process, the control point of fugitive constituent is 7-8%;
D, the bead after the slaking is fills up in the disappearance mould mould, makes disappearance mould one and disappearance mould two behind the cooling forming;
E, enter drying shed: the disappearance mould of first one-step forming is placed on the shelf that are provided with layering, allows the disappearance mould is omnibearing to dispel the heat, and puts into 45-55 degree centigrade drying shed after 1-3 days again;
F, synthetic disappearance mould: the connection bump of the groove of disappearance mould one and disappearance mould two plugged together link together, and twine a circle gummed paper at link position, by gummed paper further with disappearance mould one and disappearance mould two gluing fixing.
4. according to the described manufacture method that is used to make the disappearance mould of container angle of claim 3, it is characterized in that described steps d further comprises:
Disappearance mould mould and die preheating: preheating is used to shorten the disappearance mold forming time, the condensed water when reducing foaming in the mold cavity;
The bead filling: filling is adopted suction filling or binder filling or is pressed and inhale filling, and bead density is controlled at 23 grams per liters during filling;
Hot briquetting: it is balanced that disappearance mould mold integral temperature is risen, and when bead is heated when reaching the bead softening point, and insulation, pressurize make bead continue to expand to merge;
Cooling: want during cooling evenly, fully, the mould of avoiding disappearing forms three foaming,
The demoulding: adopt the tilting stripping means.
5. the using method as the disappearance mould that is used to make container angle as described in the claim 2 is characterized in that, comprises the steps:
For container angle is coated with the step of hanging coating,
The step of oven dry,
The step that connects the Jiao Dao and the sandbox of packing into,
Bleeding makes the step of sandbox formation negative pressure,
The step of molten steel casting,
The step of the cutting behind the outlet, polishing, ball blast.
6. according to the described using method that is used to make the disappearance mould of container angle of claim 5, it is characterized in that, described for container angle is coated with the step of hanging coating, further comprise the step that dispose coating: be specially, according to weight fraction than disposing following raw material:
Silica flour 80-85 part, cellulose 8-15 part, bentonite 1-3 part, activating agent 0.1-0.2 part, white glue with vinyl 5-8 part, water 100-150 part;
The step of configuration: earlier with silica flour, cellulose, bentonite and water are put in the soaking box and are fully stirred, mixing time is 30-35 minute, again activating agent and white glue with vinyl are dropped in the soaking box, fully stirred again 20-25 minute, make coating, for being coated with to hang, uses the disappearance mould, be coated with when hanging, the container angle mould that disappears is immersed in the soaking box, and normal temperature soaked 5-10 minute down, and the disappearance mould is pulled out in soaking box, meet the part be coated with hang incomplete, mend brush with brush, the inwall of the mould of guaranteeing to disappear all is coated with outer wall and hangs with coating, the outer wall of the Jiao Dao that casts also is coated with hangs with coating.
7. according to the described using method that is used to make the disappearance mould of container angle of claim 6, it is characterized in that described cellulose is a methylcellulose, any one in hydroxyethylcellulose or the hydroxypropyl methylcellulose; Described surfactant is a stearic acid, neopelex, lecithin, fatty glyceride, any one in the polysorbate; The weight fraction ratio of composition is 45 parts of vinylacetates, 5 parts of polyvinyl alcohol, 4 parts of dibutyl phthalates, 1 part of octanol, 0.1 part of ammonium persulfate, 44.9 parts in water in the described white glue with vinyl.
8. according to the described using method that is used to make the disappearance mould of container angle of claim 5, it is characterized in that in the step of described oven dry, the temperature of oven dry is the 45-55 degree, drying time is 2-3 days; In the step of the described connection Jiao Dao and the sandbox of packing into, disappearance mould Jiao Dao on the disappearance mould is adhesively fixed and is connected with casting Jiao Dao, make the both sides of casting Jiao Dao be connected with some disappearance moulds, the casting Jiao Dao that will connect the disappearance mould then places in the sandbox, with the water-glass sand sandbox of packing into, utilize the sandbox hanger that sandbox is lifted to the compacting platform, sand is wipeed off compacting.
9. according to the described using method that is used to make the disappearance mould of container angle of claim 5, it is characterized in that, described bleeding makes sandbox form the step of negative pressure, the aspirating hole that buries the sandbox of the mould that disappears is connected on the aspiration pump, bled 5-15 minute, make and form negative pressure in the sandbox, cup is placed the sandbox top, the below outlet of cup links to each other with casting Jiao Dao, the step of described molten steel casting: the top that molten steel is winched to cup with crane, molten steel waters on casting Jiao Dao along cup, the disappearance mould is met molten steel and is rapidly disappeared, and the position of disappearance mould forms cavity, and molten steel trickles in cavity, after the 15-30 that stops to cast minute, with the container angle outlet after the casting.
10. according to the described using method that is used to make the disappearance mould of container angle of claim 5, it is characterized in that, the step of the cutting behind the outlet, polishing, ball blast: container angle and Jiao Dao behind the outlet link together, use cutting machine that container angle is cut down successively, and polish at cutting part, after the polishing container angle is dropped into ball blast in the shot-blasting machine, form the container angle finished product.
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| CN 201010587093 CN102029358B (en) | 2010-12-14 | 2010-12-14 | Expendable pattern for manufacturing corner fittings of container and manufacturing method and using method thereof |
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| CN 201010587093 CN102029358B (en) | 2010-12-14 | 2010-12-14 | Expendable pattern for manufacturing corner fittings of container and manufacturing method and using method thereof |
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| CN113042681A (en) * | 2019-12-27 | 2021-06-29 | 南通虹冈铸钢有限公司 | Mixed foam model manufacturing process for preventing important surface residues of iron castings |
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