CN101480702B - Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts - Google Patents
Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts Download PDFInfo
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- CN101480702B CN101480702B CN2009100211529A CN200910021152A CN101480702B CN 101480702 B CN101480702 B CN 101480702B CN 2009100211529 A CN2009100211529 A CN 2009100211529A CN 200910021152 A CN200910021152 A CN 200910021152A CN 101480702 B CN101480702 B CN 101480702B
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- 238000005266 casting Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 title claims description 8
- 239000004519 grease Substances 0.000 title claims description 8
- 239000004576 sand Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 56
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010685 fatty oil Substances 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000007665 sagging Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003027 oil sand Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005120 petroleum cracking Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a core-making method adopting synthetic-oil sand for producing a casting of a thermoelectric couple cast-iron protecting tube, which comprises the following steps: firstly, synthetic oil is taken as binding agent, casting roughing sand belongs to refractory aggregates which are mixed to produce core sand, and then, the core sand is taken as raw materials to be respectively made a mandril and a core mark, and the mandril and the core mark are finally assembled together to form a sand core, wherein a core box 1 used for manufacturing the mandril is of a longitudinal split steel-made tubular structure, and a whole-box roasting process is adopted when the mandril is manufactured; and a core box 2 used for manufacturing the core mark is a steel-made core box. Invention lowers the production cost while simplifying the production process; in addition, the quality of the produced sand core is good, and the finished product ratio is high.
Description
The method field
The present invention relates to the casting core field, especially relate to a kind of compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts.
Background method
Thermocouple is a kind of temperature test device, is mainly used in the temperature control of multiple Thermal Equipment in the industries such as metallurgy, chemical industry, material, food and light industry.The effect of electric thermo-couple cast iron protection tube: the one, support thermocouple and be installed in the media environment of required thermometric; The 2nd, shield, make thermocouple under working environment, avoid acid, caustic corrosion and the high-temperature oxydation of measured medium.The design feature of electric thermo-couple cast iron protection tube is that an end is an openend; the other end is the blind hole blind end; and tube wall is thin and elongated; its wall thickness is about 10～12mm; the about 20mm of diameter of bore needs according to use occasion, and electric thermo-couple cast iron protection tube has multiple length specification; be about most 2.8m, the shortest about 1.0m.
The design feature of electric thermo-couple cast iron protection tube has determined its Foundry Production that big difficulty is arranged, and as core very high intensity will be arranged, and under the impulsive force and buoyancy of high temperature liquid iron, requires not drop of core, and indeformable, core floatation does not break; The exhaust of core is unobstructed, and the gas that its binding agent is sent under the high temperature liquid iron effect can in time be got rid of; Core any surface finish rounding can guarantee the fineness of cast tube endoporus.
At present, the core manufacturing craft of producing the cast iron electric thermo-couple cast iron protection tube is the disposable core that fuse and core print combine that makes, with dioxide-containing silica greater than 90% quartz sand as refractory aggregate, water-soluble resin is a binding agent, mixes coremaking sand; Adopt wooden opposite opened core box; Arbor adopts seamless steel pipe; During coremaking, insert in the two halves core box mixing the core sand that makes, the real strickling of pounding, rodding behind the merging core box, beats gently with wooden mallet, makes the two halves core in conjunction with tight; Logical carbon dioxide solidifies in the arbor pipe again, then the demoulding and core finishing; Then behind dip-coating fireproof coating on the core, core is advanced kiln drying.Though this production technology can produce qualified core, there is more problem in producing, as complex process, long flow path is particularly wanted to dry behind the brushing paint, wherein brushes, carries, and damage is arranged during core in the processes such as the interior arrangement of kiln; Manual core making is high to workman's method and qualification requirement; The cost height, yield rate is lower; Core of low quality, and directly influence the yield rate and the production efficiency of protecting cast iron pipe.
Summary of the invention
Method problem to be solved by this invention is at the deficiency in the above-mentioned existing method; a kind of compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts is provided, when simplifying production technology, has reduced production cost; and the core quality that makes is good, and the yield rate height.
For solving the said method problem, the method scheme that the present invention adopts is: a kind of compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts is characterized in that may further comprise the steps:
Step 1, making core sand: with 90-110 purpose casting roughing sand is refractory aggregate, to close fatty oil is binding agent, with described casting roughing sand with close fatty oil and put into puddle mixer and mix and to make core sand, wherein, described casting roughing sand and the percentage by weight that closes fatty oil are 100: 2-2.8;
Step 3, make core print: with the core sand in the step 1, and use steel opposite opened core box two to make core print, the core print that will take out from core box two is put into electric furnace and is toasted again, baking temperature is 200 ℃-260 ℃, the afterheat baking time is 2-3 hour, at last core print is come out of the stove, and is standby; Wherein, described core print is the column that length is not less than 50mm, connect core print and have the core print centre bore, the length of described core print centre bore leading portion part is 25-30mm, and the diameter of the fuse in the diameter of this core print centre bore leading portion part and the step 2 matches, and the diameter of the arbor in described core print centre bore back segment diameter partly and the step 2 matches;
The process of using core box two to make core print in the step 3 is: at the inner core sand that also centers in the core filling step one of the split cavity of core box two, after the reality of pounding and the strickling, be placed on the top of core knocking mould, the blind hole of knocking the mould bottom is partly cooperated with the epimere of core, after knocking mould upper end evenly reinforcing be shaped the core sand consolidation downwards, use wooden mallet to beat and knock mould, take off and knock mould, after sloughing split cavity and core, obtain core print; Wherein, described core box two comprises bed die, is arranged on the bed die and is used for forming the split cavity that splits around of core print shape, is arranged on the bed die and is used for forming the core of core print centre bore, and knock mould, described blind hole of knocking the mould bottom partly matches with the epimere of core.
The roughing sand of casting described in the step 1 is 100: 2.2 with the percentage by weight that closes fatty oil.
Baking temperature is 220 ℃ in step 2 and the step 3.
The present invention compares with existing method and has the following advantages: 1, fuse and core print are made separately among the present invention, and this is that its diameter is generally 43mm, much larger than the diameter of fuse owing to the core print cross-sectional area that designs according to Foundry Production mould assembling requirement is big.Facts have proved that through industrialization this preparation method has been simplified the core box structure, fuse and core print are convenient at assembly operation, have improved production efficiency greatly; On the other hand; when making fuse, take the whole baking process of core box; and need not at core surface dip-coating refractory material; when simplifying production technology like this; make the fuse yield rate reach 100%; the fuse quality that makes is good, and the percent defective of the electric thermo-couple cast iron protection tube casting parts that causes because of the core quality problems is dropped to below 5% by 30%.2, adopt that to close fatty oil be binding agent, the casting roughing sand is that refractory aggregate mixes and makes core sand, and the core production cost is declined to a great extent, and the core long with 1.5m is example, is reduced to present 1.2 yuan by former every 2 yuan cost (comprising raw material, artificial, the electricity charge etc.).
Below by drawings and Examples, method scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of core of the present invention.
Fig. 2 is the structural representation of core print of the present invention.
Fig. 3 is the structural representation of core box one of the present invention.
Fig. 4 is equipped with core box one structural representation of Fastener for the present invention.
Fig. 5 is the structural representation of core box two of the present invention.
Description of reference numerals:
The 1-fuse; The 2-core print; 2-1-core print centre bore;
3-core box one; 3-1-seals plug; 3-2-perforate plug;
3-3-core box centre bore; The 3-4-movable drain plug; 4-core box two;
4-1-knocks mould; The 4-2-core; The 4-3-split cavity;
The 4-4-bed die; The 5-arbor; The 6-Fastener.
The specific embodiment
As shown in Figure 1, the present invention includes following steps:
Step 1, making core sand: with 90-110 purpose casting roughing sand is refractory aggregate, to close fatty oil is binding agent, and with described casting roughing sand with close fatty oil and put into puddle mixer and mix and to make core sand, wherein, closing fatty oil is a kind of good core sand binder, and it is as the byproduct of petroleum cracking, wide material sources, and cost is low; The refractoriness of casting roughing sand is enough to meet the requirement of the present invention to refractoriness, and its cost is far below glass sand.Described casting roughing sand is 100 with the percentage by weight that closes fatty oil: 2-100: 2.8, and wherein, preferably casting roughing sand is 100: 2.2 with the percentage by weight that closes fatty oil.
Wherein, fuse 1 is the column of the electric thermo-couple cast iron protection tube casting parts cavity shape that is used to be shaped, and an end of this column is the cambered surface end, and the other end is a planar ends; Fuse 1 inside is provided with arbor 5, and the front end of arbor 5 stretches out the planar ends of fuse 1.For strengthening the intensity of fuse 1, arbor 5 is set in the core sand of core box one 3 inside, arbor 5 is made by seamless steel pipe, and the diameter of arbor 5 is 10mm, and wall thickness is 1mm, and every interval 10mm has the circular venthole that diameter is 2.5mm on the tube wall of arbor 5.The design of venthole makes the good air permeability of core sand on the arbor 5, has concurrently to strengthen the effect that core sand combines with arbor 5.
Core box 1 is vertical opposite opened steel tubular body structure, and an end of core box 1 is the blind hole blind end, and the other end is a planar ends, has the core box centre bore 3-3 that stretches out for arbor 5 on this planar ends.In the present embodiment, core box 1 is by vertically two steel semicanal bodies of folding being formed, be welded with sealing plug 3-1 and the perforate plug 3-2 that has semicircle orifice respectively at the two ends of semicanal body, when two semicanal bodies are combined to form core box 1, inside at core box 1, the combination of lumens of two sealing plug 3-1 form cambered surfaces, and the semicircle orifice on this cambered surface be used for the being shaped cambered surface end of fuse 1, two perforate plug 3-2 is combined to form the core box centre bore 3-3 that stretches out for arbor 5 in the fuse 1.In the present embodiment, be provided with movable drain plug 3-4 in the inner chamber of two semicanal bodies, and on each semicanal body on the cavity shape of movable drain plug 3-4 and this semicanal body the cavity shape of sealing plug 3-1 corresponding consistent, like this, length according to required making fuse 1, two movable drain plug 3-4 are bonded and fixed at opposite position in this semicanal body, and when two semicanal bodies merge when forming core boxes 1, the combination of lumens of two movable drain plug 3-4 forms cambered surface.This shows that movable drain plug 3-4 makes a core box 1 can produce the fuse 1 of different length, realized that a box uses more.
Step 3, make core print 2: with mixing the core sand that makes in the step 1, use steel opposite opened core box 24 to make core print 2, its manufacturing process is: the core sand that makes is also mixed in the inside at split cavity 4-3 in core 4-2 filling step one, after the reality of pounding and the strickling, be placed on the top of core 4-2 knocking mould 4-1, the blind hole of knocking mould 4-1 bottom is partly cooperated with the epimere of core 4-2, after knocking mould upper end evenly reinforcing be shaped the core sand consolidation downwards, use wooden mallet to beat and knock mould 4-1, take off and knock mould 4-1, after sloughing split cavity 4-3 and core 4-2, obtain core print 2.The core print 2 that will take out from core box 24 is put into electric furnace and is toasted, and baking temperature is 200 ℃-260 ℃, and the afterheat baking time is 2-3 hour, at last core print 2 is come out of the stove, and is standby.Wherein, preferred baking temperature is 220 ℃.
Described core box 24 comprises bed die 4-4, split cavity 4-3, core 4-2 and knocks mould 4-1, and split cavity 4-3 is for splitting around the formula structure, and this split cavity 4-3 detachably is installed in the shape that bed die 4-4 went up and be used for forming core print 2; Core 4-2 is a column, and the diameter of core 4-2 is identical with fuse 1 diameter, and this core 4-2 is movably arranged on bed die 4-4 and goes up and be positioned on the center line of two die body inner chambers of split cavity 4-3, and is used for forming the shape of core print centre bore 2-1; The described mould 4-1 bottom of knocking has blind hole, and this blind hole partly matches with the epimere of core 4-2.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every according to the inventive method essence to any simple modification, change and equivalent structure transformation that above embodiment did, all still belong in the protection domain of the inventive method scheme.
Claims (3)
1. compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts is characterized in that may further comprise the steps:
Step 1, making core sand: the casting roughing sand with 90-110 is a refractory aggregate, to close fatty oil is binding agent, with described casting roughing sand with close fatty oil and put into puddle mixer and mix and to make core sand, wherein, described casting roughing sand and the percentage by weight that closes fatty oil are 100: 2-2.8;
Step 2, make fuse (1): the core sand in the step 1 is inserted respectively in two and half core boxes of core box one (3), the reality of pounding is also wipeed core sand in half core box off, place arbor (5) therein in one and half core boxes, make arbor (5) sagging 2.5-3.5mm in core sand, the front end of arbor (5) stretches out outside the planar ends of this half core box, and the segment length of stretching out of arbor (5) is not less than 100mm, again two and half core boxes are merged and form core box one (3), laterally be installed on the outside of core box one (3) with steel Fastener (6), make two and half core boxes not produce relative displacement, Fastener (6) and core box one (3) integral body are put into electric furnace toasts, baking temperature is 200 ℃-260 ℃, the afterheat baking time is 3-4 hour, and baking finishes, and Fastener (6) and core box one (3) are come out of the stove, take off Fastener (6), open core box one (3), take out the fuse (1) that has arbor (5), standby; Wherein, described core box one (3) is vertical opposite opened steel tubular body structure, and an end of core box one (3) is the blind hole blind end, the other end is a planar ends, on the planar ends of core box one (3), have the core box centre bore (3-3) that stretches out for arbor (5), described arbor (5) is that 10mm and wall thickness are the seamless steel pipes of 1mm for diameter, and every interval 10mm has the circular venthole that diameter is 2.5mm on the tube wall of arbor (5);
Step 3, making core print (2): with the core sand in the step 1, and use steel opposite opened core box two (4) to make core print (2), the core print (2) that will take out from core box two (4) is put into electric furnace and is toasted again, baking temperature is 200 ℃-260 ℃, the afterheat baking time is 2-3 hour, at last core print (2) is come out of the stove, standby; Wherein, described core print (2) is not less than the column of 50mm for length, connect core print (2) and have core print centre bore (2-1), the length of described core print centre bore (2-1) leading portion part is 25-30mm, and the diameter of the fuse (1) in the diameter of this core print centre bore (2-1) leading portion part and the step 2 matches, and the diameter of the arbor (5) in described core print centre bore (2-1) back segment diameter partly and the step 2 matches;
Step 4, assembling fuse (1) and core print (2): the planar ends that described core print (2) is sleeved on fuse (1), and the leading portion of core print centre bore (2-1) part matches with the planar ends of fuse (1), and the section of stretching out that makes arbor (5) is stretched out outside core print (2) after passing the back segment part of core print centre bore (2-1);
The process of using core box two (4) to make core print (2) in the step 3 is: at the inner core sand that also centers in core (4-2) filling step one of the split cavity (4-3) of core box two (4), after the reality of pounding and the strickling, be placed on the top of core (4-2) knocking mould (4-1), the blind hole of knocking mould (4-1) bottom is partly cooperated with the epimere of core (4-2), after knocking mould upper end evenly reinforcing be shaped the core sand consolidation downwards, use wooden mallet to beat and knock mould (4-1), take off and knock mould (4-1), after sloughing split cavity (4-3) and core (4-2), obtain core print (2); Wherein, described core box two (4) comprises bed die (4-4), be arranged on bed die (4-4) and go up and be used for forming the split cavity that splits around (4-3) of core print (2) shape, be arranged on bed die (4-4) and go up and be used for forming the core (4-2) of core print centre bore (2-1), and knock mould (4-1), described blind hole of knocking mould (4-1) bottom partly matches with the epimere of core (4-2).
2. according to the described a kind of compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts of claim 1, it is characterized in that: the roughing sand of casting described in the step 1 is 100: 2.2 with the percentage by weight that closes fatty oil.
3. according to the described a kind of compound grease sand core production method of producing electric thermo-couple cast iron protection tube casting parts of claim 1, it is characterized in that: baking temperature is 220 ℃ in step 2 and the step 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100211529A CN101480702B (en) | 2009-02-17 | 2009-02-17 | Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100211529A CN101480702B (en) | 2009-02-17 | 2009-02-17 | Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts |
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| CN101480702A CN101480702A (en) | 2009-07-15 |
| CN101480702B true CN101480702B (en) | 2010-12-08 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102554131A (en) * | 2010-11-23 | 2012-07-11 | 南通新景华企业管理服务有限公司 | Core making process of cylinder jacket casting technology |
| CN103752767B (en) * | 2013-12-18 | 2016-06-22 | 桐乡合德机械有限公司 | Foundry goods Elongated hole sand core molding structure and manufacturing process |
| CN104117631B (en) * | 2014-06-30 | 2016-07-27 | 聊城新泺机械有限公司 | The method and apparatus improving body main oil gallery blowhole quality |
| CN104384455A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method of preparing semi-circular hole by casting |
| CN104475686A (en) * | 2014-11-25 | 2015-04-01 | 山东省源通机械股份有限公司 | Sand mold casting method |
| CN106541083A (en) * | 2016-12-08 | 2017-03-29 | 广西玉柴机器股份有限公司 | The core-making method of large-sized diesel engine cylinder water channel core |
| CN113000789A (en) * | 2021-02-23 | 2021-06-22 | 贵州安吉航空精密铸造有限责任公司 | Volute casting forming method |
| CN114888240A (en) * | 2022-05-19 | 2022-08-12 | 迅驰工业(银川)有限公司 | Manufacturing method of sand core with modular core head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5479981A (en) * | 1993-12-29 | 1996-01-02 | Hyundai Motor Company | Method for casting a hollow camshaft for internal combustion engine |
| CN1555942A (en) * | 2004-01-02 | 2004-12-22 | 李钟毅 | Mould used for fast production of automobile brake drum casting sand mould |
| CN2860676Y (en) * | 2005-12-31 | 2007-01-24 | 广西玉柴机器股份有限公司 | Water channel core of engine cylinder cap |
| CN101195151A (en) * | 2007-12-19 | 2008-06-11 | 西安汇群机械科技有限公司 | Thermal couple protector tube processing technique |
-
2009
- 2009-02-17 CN CN2009100211529A patent/CN101480702B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5479981A (en) * | 1993-12-29 | 1996-01-02 | Hyundai Motor Company | Method for casting a hollow camshaft for internal combustion engine |
| CN1555942A (en) * | 2004-01-02 | 2004-12-22 | 李钟毅 | Mould used for fast production of automobile brake drum casting sand mould |
| CN2860676Y (en) * | 2005-12-31 | 2007-01-24 | 广西玉柴机器股份有限公司 | Water channel core of engine cylinder cap |
| CN101195151A (en) * | 2007-12-19 | 2008-06-11 | 西安汇群机械科技有限公司 | Thermal couple protector tube processing technique |
Non-Patent Citations (1)
| Title |
|---|
| JP特開2004-291041A 2004.10.21 |
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Denomination of invention: Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts Effective date of registration: 20150107 Granted publication date: 20101208 Pledgee: Xi'an Taixin financing Company limited by guarantee Pledgor: Xi'an Xin Long Mechanical Casting Co., Ltd. Registration number: 2015610000001 |
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Denomination of invention: Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts Effective date of registration: 20160303 Granted publication date: 20101208 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: Xi'an Xin Long Mechanical Casting Co., Ltd. Registration number: 2016980000019 |
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Denomination of invention: Compound grease sand core production method for producing electric thermo-couple cast iron protection tube casting parts Effective date of registration: 20170621 Granted publication date: 20101208 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: Xi'an Xin Long Mechanical Casting Co., Ltd. Registration number: 2017610000053 |
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