CN103658529B - The preparation method of the apperance of V method moulding - Google Patents
The preparation method of the apperance of V method moulding Download PDFInfo
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- CN103658529B CN103658529B CN201310746930.7A CN201310746930A CN103658529B CN 103658529 B CN103658529 B CN 103658529B CN 201310746930 A CN201310746930 A CN 201310746930A CN 103658529 B CN103658529 B CN 103658529B
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Abstract
The invention provides the preparation method of the apperance of a kind of V method moulding.The preparation method of the apperance of this V method moulding comprises the following steps: prepare gypsum slurry according to preset blending ratio; And utilize the gypsum slurry prepared to obtain the apperance of V method moulding.Technical scheme of the present invention can economize on resources and simplify preparation technology.
Description
Technical field
The present invention relates to model manufacturing field, in particular to the preparation method of the apperance of a kind of V method moulding.
Background technology
The V method moulding that 20 century 70s rise, utilizes plastic sheeting to vacuumize and makes dry sand shaping.Owing to not using binding agent in forming process, knockout is easy, makes the consumption of Modeling Material drop to bottom line, decreases antiquated sand, improve surface quality of continuous castings and precision, and reducing the production power consumption of foundry goods, is a kind of casting technique had a extensive future.But V method moulding apperance used is wooden model mostly, not only consumes timber resources non-renewable in a large number, and the moulding cycle is long, and technology difficulty is large.
Summary of the invention
The present invention aims to provide the preparation method of the apperance of a kind of V method moulding, can economize on resources and simplify preparation technology.
To achieve these goals, according to an aspect of the present invention, provide the preparation method of the apperance of a kind of V method moulding, comprise the following steps: prepare gypsum slurry according to preset blending ratio; And utilize the gypsum slurry prepared to obtain the apperance of V method moulding.
Further, the constituent of described gypsum slurry comprises land plaster, additive and solvent.
Further, described land plaster comprises at least one in desulfurized gesso of flue gas, ardealite and the plaster of paris.
Further, the constituent of described additive comprises water reducer, defoamer and gel time controlling agent.
Further, described solvent is water or silica aqueous solution.
Further, the apperance that the gypsum slurry that described utilization prepares obtains the moulding of V method comprises the following steps: pour in die cavity by the described gypsum slurry prepared; Dry described gypsum slurry and obtain plaster mold blank; And described plaster mold blank is processed into the apperance of V method moulding.
Further, be embedded with metal needle in described die cavity, the described gypsum slurry of described oven dry is further comprising the steps of before obtaining plaster mold blank: when described gypsum slurry initial set, extracted by described metal needle.
Further, the described apperance described plaster mold blank being processed into the moulding of V method comprises the following steps: according to the three-dimensional CAD model numerical control machining code generating of described apperance; Described plaster mold blank is placed on process equipment, according to described numerical control machining code, machining is carried out to described plaster mold blank and obtain plaster mold; And the described plaster mold surface machined is cleaned, obtain the apperance of described V method moulding.
Further, the parameter of machining comprises: the speed of mainshaft is 2000 to 20000 revs/min; Cutting speed is for being less than or equal to 200 mm/second; Cutting depth is for being less than or equal to 10 millimeters; And cutting width is 30% to 80% of process tool diameter.
Further, dry gypsum slurry to obtain plaster mold blank and comprise the following steps: described gypsum slurry is dried in the shade 20 to 30 hours in atmosphere naturally; And the described gypsum slurry after drying in the shade put into air dry oven and dry to constant weight and obtain described plaster mold blank, wherein bake out temperature is less than or equal to 60 DEG C.
Apply technical scheme of the present invention, gypsum slurry is adopted to replace timber to prepare the apperance of V method moulding, timber resources can be saved, reduce costs, and the plaster mold adopting gypsum slurry to make more easily is processed compared to wooden model, simplify technique, reduce the production cycle, the surface accuracy of plaster mold also has compared to wooden model and promotes by a relatively large margin.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic flow sheet of preparation method according to an embodiment of the invention; And
Fig. 2 shows the schematic flow sheet of the most preferred embodiment of preparation method according to an embodiment of the invention.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1, according to embodiments of the invention, provide the preparation method of the apperance of a kind of V method moulding, comprise the following steps:
S100, prepare gypsum slurry according to preset blending ratio; And
The gypsum slurry that S200, utilization prepare obtains the apperance of V method moulding.
The present invention utilizes gypsum to substitute the apperance of timber or the moulding of preparation of metals V method as raw material, avoids the waste to timber resources, and the making of plaster mold and processing compared to wooden model or metal pattern more simple and convenient.
In conjunction with see Fig. 2, wherein S200, the apperance that utilizes the gypsum slurry prepared to obtain the moulding of V method specifically comprise the following steps:
First slowly pour in the die cavity of mould after being stirred by the gypsum slurry prepared, be embedded with metal needle in die cavity, metal needle diameter is not more than 2 millimeters, and spacing is not more than 50 millimeters;
Then rapidly metal needle is extracted when gypsum slurry initial set, gypsum slurry forms passage;
Then gypsum slurry is dried in the shade 20 to 30 hours in atmosphere, put in air dry oven and dry to constant weight being less than or equal under the condition of 60 DEG C, obtain plaster mold blank;
Three-dimensional CAD model according to the gypsum apperance preset carries out somatotype process, utilizes CAM Software Create numerical control machining code;
Again plaster mold blank is placed on process equipment, according to this numerical control machining code, machining is carried out to plaster mold blank, obtain plaster mold;
Finally the plaster mold surface machined and passage are cleaned, obtain the apperance of V method moulding.
Preferably, the constituent of gypsum slurry comprises land plaster, additive and solvent, wherein land plaster comprises at least one in desulfurized gesso of flue gas, ardealite or the plaster of paris, the constituent of additive comprises water reducer, defoamer and gel time controlling agent, solvent is water or silica aqueous solution, silica aqueous solution used is commercially available frequent species, water in silica aqueous solution: Ludox=(3-4): 1.The ratio of land plaster and solvent (such as water) measures with reference to national standard.
At present, in the accessory substance ardealite solid waste produced in the desulfurated plaster that large thermal power plant produces in power generation process and phosphatic compound fertilizer process, a part is used for plaster of Paris, remaining part is all abandoned, cause the waste of environmental pollution and resource, so the gypsum raw material that the present embodiment is intended to this part to be wasted use, economize on resources.
Because gypsum apperance wants Reusability, so require higher for the intensity, wearability etc. of gypsum apperance, in order to realize this purpose, adding water reducer can reduce the thick water consumption of gypsum mark; Gel time controlling agent can be set retarder or short aggegation, for controlling the presetting period of gypsum slurry, facilitates extracting in time of preburied pin.
Preferably, the Cutting Parameters of process equipment comprises: the speed of mainshaft is 2000 to 20000 revs/min; Cutting speed is for being less than or equal to 200 mm/second; Cutting depth is for being less than or equal to 10 millimeters; And cutting width is 30% to 80% of process tool diameter.
Preferably, process tool is selected from the one in ceramic milling cutter, diamond milling cutter, empiecement diamond milling cutter, surface diamond coating milling cutter, overlay coating carbide-tipped milling cutter or cubic boron nitride milling cutter.
Below in conjunction with preferred embodiment, this programme is described in detail.
Embodiment 1
The preparation method of the apperance of V method moulding comprises the following steps:
Step 1, the defoamer of the water reducer of the water of the desulfurized gesso of flue gas of 100 weight portions, 51 weight portions, 0.3 weight portion, the set retarder of 0.01 weight portion and 0.3 weight portion is carried out proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENTF15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITANP8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, the gypsum slurry prepared is stirred after pour into and be embedded with in the mold cavity of metal needle, the diameter of metal needle 0.5 millimeter, spacing 10 millimeters.
Step 3, extract metal needle rapidly when gypsum slurry initial set, form passage, put into after naturally drying in the shade in atmosphere 24 hours in air dry oven and dry to constant weight, bake out temperature is 60 DEG C, obtains plaster mold blank.
Step 4, somatotype process is carried out to the three-dimensional CAD model of gypsum apperance preset, utilize CAM Software Create numerical control machining code.
Step 5, plaster mold blank step 4 obtained are placed on process equipment, according to numerical control machining code, machining is carried out to plaster mold blank, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
The plaster mold surface that step 6, cleaning obtain and passage, obtain the apperance of V method moulding.
Embodiment 2
The preparation method of the apperance of V method moulding comprises the following steps:
Step 1, the defoamer of the water reducer of the silica aqueous solution of the ardealite of 100 weight portions, 53 weight portions, 0.3 weight portion, the set retarder of 0.01 weight portion and 0.3 weight portion is carried out proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENTF15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITANP8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, the gypsum slurry prepared is stirred after pour into and be embedded with in the mold cavity of metal needle, the diameter of metal needle 1 millimeter, spacing 15 millimeters.
Step 3, extract metal needle rapidly when gypsum slurry initial set, form passage, put into after naturally drying in the shade in atmosphere 20 hours in air dry oven and dry to constant weight, bake out temperature is 50 DEG C, obtains plaster mold blank.
Step 4, somatotype process is carried out to the three-dimensional CAD model of gypsum apperance preset, utilize CAM Software Create numerical control machining code.
Step 5, plaster mold blank step 4 obtained are placed on process equipment, according to numerical control machining code, machining is carried out to plaster mold blank, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
The plaster mold surface that step 6, cleaning obtain and passage, obtain the apperance of V method moulding.
Embodiment 3
The preparation method of the apperance of V method moulding comprises the following steps:
Step 1, the defoamer of the water reducer of the water of the plaster of paris of 100 weight portions, 40 weight portions, 0.3 weight portion, the set retarder of 0.01 weight portion and 0.3 weight portion is carried out proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENTF15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITANP8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, the gypsum slurry prepared is stirred after pour into and be embedded with in the mold cavity of metal needle, the diameter of metal needle 0.5 millimeter, spacing 10 millimeters.
Step 3, extract metal needle rapidly when gypsum slurry initial set, form passage, put into after naturally drying in the shade in atmosphere 24 hours in air dry oven and dry to constant weight, bake out temperature is 60 DEG C, obtains plaster mold blank.
Step 4, somatotype process is carried out to the three-dimensional CAD model of gypsum apperance preset, utilize CAM Software Create numerical control machining code.
Step 5, plaster mold blank step 4 obtained are placed on process equipment, according to numerical control machining code, machining is carried out to plaster mold blank, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
The plaster mold surface that step 6, cleaning obtain and passage, obtain the apperance of V method moulding.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1, adopt gypsum to replace timber as the raw material of apperance, a large amount of timber resources will be saved, avoid waste and welding.
2, adopt pre-buried metal needle to make passage, will the operation of processing passage in shaping apperance be saved, technique is simplified, time saving and energy saving.
3, the method for numerical control cutting is adopted to make apperance; avoid the making of metal pattern or wooden model; and do not need to turn over silicon rubber mould processed; directly carrying out Digital manufacturing to plaster mold blank manufactures gypsum apperance; shorten casting flow process; reduce the impact of human factor, save founding materials, the gypsum apperance that dimensional accuracy is high, surface smoothness is good can be produced fast.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a preparation method for the apperance of V method moulding, is characterized in that, comprises the following steps:
Gypsum slurry is prepared according to preset blending ratio; And
The gypsum slurry prepared is utilized to obtain the apperance of V method moulding;
Wherein, the apperance that the gypsum slurry that described utilization prepares obtains the moulding of V method comprises the following steps:
The described gypsum slurry prepared is poured in die cavity;
Dry described gypsum slurry and obtain plaster mold blank; And
Described plaster mold blank is processed into the apperance of V method moulding;
Wherein, be embedded with metal needle in described die cavity, the described gypsum slurry of described oven dry is further comprising the steps of before obtaining plaster mold blank:
When described gypsum slurry initial set, described metal needle is extracted.
2. the preparation method of the apperance of V method according to claim 1 moulding, is characterized in that, the constituent of described gypsum slurry comprises land plaster, additive and solvent.
3. the preparation method of the apperance of V method according to claim 2 moulding, is characterized in that, described land plaster comprises at least one in desulfurized gesso of flue gas, ardealite and the plaster of paris.
4. the preparation method of the apperance of V method according to claim 2 moulding, is characterized in that, the constituent of described additive comprises water reducer, defoamer and gel time controlling agent.
5. the preparation method of the apperance of V method according to claim 2 moulding, is characterized in that, described solvent is water or silica aqueous solution.
6. the preparation method of the apperance of V method according to claim 1 moulding, is characterized in that, the described apperance described plaster mold blank being processed into the moulding of V method comprises the following steps:
According to the three-dimensional CAD model numerical control machining code generating of described apperance;
Described plaster mold blank is placed on process equipment, according to described numerical control machining code, machining is carried out to described plaster mold blank and obtain plaster mold; And
The described plaster mold surface machined is cleaned, obtains the apperance of described V method moulding.
7. the preparation method of the apperance of V method according to claim 6 moulding, is characterized in that, the parameter of machining comprises:
The speed of mainshaft is 2000 to 20000 revs/min;
Cutting speed is for being less than or equal to 200 mm/second;
Cutting depth is for being less than or equal to 10 millimeters; And
Cutting width is 30% to 80% of process tool diameter.
8. the preparation method of the apperance of V method according to claim 1 moulding, is characterized in that, oven dry gypsum slurry obtains plaster mold blank and comprises the following steps:
Described gypsum slurry is dried in the shade 20 to 30 hours in atmosphere naturally; And
Described gypsum slurry after drying in the shade is put into air dry oven to dry to constant weight and obtain described plaster mold blank, wherein bake out temperature is less than or equal to 60 DEG C.
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| CN104368753B (en) * | 2014-11-07 | 2016-07-06 | 滁州金诺实业有限公司 | V method mould rapid die-manufacturing method based on paraffin characteristic |
| CN104525850B (en) * | 2014-12-16 | 2017-01-04 | 中国南方航空工业(集团)有限公司 | Cast pattern and the preparation method of cast pattern |
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| US6286581B1 (en) * | 1999-07-28 | 2001-09-11 | Ronald Gustafson | Method for machining sand block into sand molding elements including sand molds and sand cores for metal casting foundry operations |
| JP4352397B2 (en) * | 2004-04-01 | 2009-10-28 | 新東工業株式会社 | Pouring method for vacuum mold making |
| CN101439390B (en) * | 2008-12-30 | 2011-03-16 | 机械科学研究总院先进制造技术研究中心 | Digitalization processing method of gypsum mould |
| CN102248123A (en) * | 2011-06-07 | 2011-11-23 | 昆山市瑞捷精密模具有限公司 | Method for forming gypsum mold |
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