CN101879582A - Precoated sand multi-stack casting process - Google Patents
Precoated sand multi-stack casting process Download PDFInfo
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- CN101879582A CN101879582A CN 201010242422 CN201010242422A CN101879582A CN 101879582 A CN101879582 A CN 101879582A CN 201010242422 CN201010242422 CN 201010242422 CN 201010242422 A CN201010242422 A CN 201010242422A CN 101879582 A CN101879582 A CN 101879582A
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Abstract
The invention relates to a technical field of a casting process, in particular to a precoated sand multi-stack casting process comprising the following steps of: after making precoated sand shell-shaped units according to a casting drawing, vertically stacking at least two shell-shaped units on an iron bottom board, covering an iron cover board and then tightly clamping by using a connecting element; then pouring high-temperature liquid materials from a pouring cup of the iron cover board to fill a casting cavity, a horizontal casting gate and a straight casting gate under the action of gravity; and solidifying and cooling the high-temperature liquid materials to obtain a casting. Under the condition of ensuring the quality of the casting, the invention greatly improves the production efficiency of the casting process and reduces production cost.
Description
Technical field
The present invention relates to the Casting Technology field, particularly a kind of precoated sand multi-stack casting process is specially adapted to complex structure and surperficial cast form, and requires bright and cleanly, smooth, and the automobile that precision is high, mechanical industry spare and accessory parts are made.
Background technology
The precoated sand fabrication technique also claims " shell mold process " or " heat hardening technology ".Its feature is: at first adopt precoated sand as material, use metal fever core box mould to make shell mould; The die cavity of establishing in the shell mould, shape is identical with foundry goods, is of a size of casting dimension according to material contraction ratio design scaled size surplus; Then high temperature liquid materials such as molten iron are injected in the die cavity, obtain foundry goods after the cooled and solidified.
The bonding film on the precoated sand surface of using when prior art is made shell mould and shell core is the curing agent of diving.Latent curing agent is inoperative at normal temperatures or effect is very little.Dive curing agent in 200 ℃ of-290 ℃ of temperature environments that casting technique requires, and bonding film fuses cross-linking reaction and sclerosis rapidly.When making shell mould and shell core, with urging the method for penetrating that precoated sand is sent into (concrete temperature is determined according to mould size, thickness) in the mould of temperature between 200 ℃-290 ℃.Precoated sand makes the bonding film fusion cross-linking reaction on precoated sand surface with mold heat or core box contact, and is inter-adhesive, the sclerosis aftershaping, and the shell mould and the shell core that can obtain expecting taken out in die sinking.
The shell mould of this moment is a kind of interior type.It bears the incessantly high temperature and the expansive force of liquid material, also need be by the overall dimensions of shell mould, make a tide mould sand pattern in the shell mould outside: produce tide mould sand two molding boxes up and down with artificial or machinery, also mould assembling is put in the shell mould combination, leave running channel and venthole between last drag box and shell mould.The effect of tide mould sand pattern is: utilize its gravity and high temperature resistant time difference, push down, block shell mould, can not expand, lift or outflow when the melting liquid material is injected, guarantee casting quality.
That is to say that existing precoated sand fabrication technique one-step casting need be made Second Mate's mould, two road moulding links, artificial, machinery is worked heavy.Owing to be subjected to time restriction artificial or machine work face and the cooling of high-temperature liquid material flow path, can only make single-layer type, and can not too much expand the individual layer area.So just restricted the quantity of once-cast foundry goods, a molding box once-cast generally can only be made 4-10 smallclothes foundry goods.Because running channel, cast gate, feeding head must be connected to each foundry goods, casting weight accounts for 30% of gross weight.With single-piece casting weight 0.2kg is example, and male worker people's able-bodied labour can be produced 800-1000 spare foundry goods in one day eight hours.Calculated in 120 yuan/eight hours by every workman, average every foundry goods cost of labor is about 0.15 yuan.
Summary of the invention
The object of the present invention is to provide a kind of precoated sand multi-stack casting process, guaranteeing to improve casting technique production efficiency greatly under the prerequisite of casting quality.
Precoated sand multi-stack casting process of the present invention may further comprise the steps successively:
A: according to foundry goods drawing making precoated sand shell mould unit.Middle part, described shell mould unit is provided with the sprue that vertically runs through described precoated sand shell mould unit; The foundry goods die cavity is distributed in around the described sprue, and is communicated with it by cross gate.Can be respectively equipped with intermeshing groove of size or boss around the sprue of the upper surface of described shell mould unit and around the sprue of lower surface, closely connect when making the shell mould element stack to prevent the liquid material seepage of high temperature; Perhaps use during shell mould unit vertical stacking the cohesive material adhesion to connect, to prevent the liquid material seepage of high temperature.Described shell mould unit is formed by two model matched moulds of upper die and lower die, and thickens the sand mold wall in the vehement position of heat.The bottom of described shell mould unit is provided with liquid holding groove and is communicated with the foundry goods die cavity of lower floor shell mould unit, is used for the liquid material cooling procedure feeding of high temperature.
B: the described shell mould of at least two covers unit is stacked vertically on the iron bottom plate, and the sprue of each shell mould unit vertically aligns.Described iron bottom plate is installed the pad pin, is used to adjust iron bottom plate to level.
C: iron covering plate on the shell mould unit upper cover that goes up most.The middle part of described iron covering plate is provided with cup and is communicated with the sprue of shell mould unit.Described iron covering plate with shell mould unit contact-making surface be cancave cambered surface.Described cup inwall is embedded with molding sand, to be stained with thereon after the liquid material cooling that prevents high temperature.When cup is higher, can be among the step b in the shell mould unit of placing on the iron bottom plate more than Building two, every building vertical stacking at least two cover shell mould unit; Cup is communicated with the sprue of shell mould unit, every building by horizontal or slanted channel.
D: adjust the Connection Element between iron bottom plate and the iron covering plate, iron bottom plate and iron covering plate are compressed the shell mould unit.Described Connection Element can use the rectangle chase, at this moment, needs to be provided with intensive horizontal tiny lane tooth at described iron covering plate with rectangle chase contact-making surface.
E: from the liquid material of the cup of iron covering plate cast high temperature, full foundry goods die cavity, cross gate and sprue of the liquid material of high temperature under the gravity effect.
F: after the liquid material of high temperature solidifies cooling, promptly get foundry goods.
Precoated sand multi-stack casting process of the present invention is provided with the sprue that vertically runs through described precoated sand shell mould unit at middle part, shell mould unit, and the foundry goods die cavity is distributed in around the described sprue, and is communicated with it by cross gate; And with a plurality of shell moulds unit vertical stacking, the sprue of each shell mould unit vertically aligns.Therefore, from the liquid material of the sprue cast high temperature of one deck shell mould unit, top, under the gravity effect, can fill the foundry goods die cavity of whole shell moulds unit.Precoated sand multi-stack casting process one-step casting of the present invention only need be made one pair of model, need not the tide mould sand pattern of traditional handicraft, has alleviated artificial, mechanical work.Thus, just improved the production efficiency of casting greatly.Experimental results show that: the casting weight of explained hereafter of the present invention accounts for 70% of gross weight, reduces by 40% waste material than traditional precoated sand multi-stack casting process.With single-piece casting weight 0.2kg is example, and male worker people's able-bodied labour was pressed folded cast 50 times in one day eight hours, and whenever folded building produces 60 foundry goods, can produce 3000 foundry goods in one day.Calculated in 120 yuan/eight hours by every workman, average every foundry goods cost of labor is about 0.04 yuan, compares every foundry goods of traditional precoated sand multi-stack casting process and saves 0.11 yuan of labour costs.If clamp the shell mould unit more than Building two between iron bottom plate and iron covering plate, every building comprises the above shell mould unit of at least two covers, can enhance productivity by a larger margin, reduces manufacturing cost.
Precoated sand multi-stack casting process of the present invention also is provided with liquid holding groove by the bottom in the shell mould unit and is communicated with the foundry goods die cavity of lower floor shell mould unit, is used for the liquid material cooling procedure feeding of high temperature, guarantees the quality of foundry goods; By establishing intermeshing groove, boss in shell mould unit upper and lower surface or using the cohesive material adhesion to connect, to prevent the liquid material seepage of high temperature.Thus, just guaranteed the quality of foundry goods.
In addition, the precoated sand shell mould unit of precoated sand multi-stack casting process of the present invention directly contacts (amphidromic sand pattern parcel), rapid heat dissipation with atmosphere.Comprise the trace element that multiple fusings such as carbon, silicon, manganese and crystalline temperature have nothing in common with each other in the spheroidal graphite cast-iron chemical element.For guarantee that trace element mixes in the effective time of uniform temperature, reach the material requirement, will in melting, mix various nodulizers, the high temperature crystallization point of part chemical element is postponed, and the prolongation of the low temperature crystallization point of part chemical element, realize molten altogether.When chemical element is molten altogether, need cooling fast, they are mixed and crystallization.When precoated sand multi-stack casting process therefore of the present invention is produced ductile cast iron casting, can improve the material of foundry goods.Metallographic shows: the nodularization rate that precoated sand multi-stack casting process of the present invention is produced ductile cast iron casting improves more than 10%, and graphite is more spherical and tiny, is more evenly distributed.
Precoated sand multi-stack casting process of the present invention has tangible progressive meaning with respect to traditional precoated sand multi-stack casting process, is worth of widely use.
Description of drawings
Shell mould unit mounting structure schematic diagram when Fig. 1 is the production of embodiment one precoated sand multi-stack casting process;
Shell mould unit mounting structure schematic diagram when Fig. 2 is the production of embodiment two precoated sand multi-stack casting process.
The specific embodiment
Further specify technical solution of the present invention below in conjunction with accompanying drawing and preferred embodiment:
Embodiment one:
The present embodiment precoated sand multi-stack casting process may further comprise the steps successively:
A: according to foundry goods drawing making precoated sand shell mould unit.Middle part, described shell mould unit is provided with the sprue that vertically runs through described precoated sand shell mould unit; The foundry goods die cavity is distributed in around the described sprue, and is communicated with it by cross gate.Can be respectively equipped with intermeshing groove of size or boss around the sprue of the upper surface of described shell mould unit and around the sprue of lower surface, closely connect when making the shell mould element stack to prevent the liquid material seepage of high temperature.Described shell mould unit is formed by two model matched moulds of upper die and lower die, and thickens the sand mold wall in the vehement position of heat.The bottom of described shell mould unit is provided with liquid holding groove and is communicated with the foundry goods die cavity of lower floor shell mould unit, is used for the liquid material cooling procedure feeding of high temperature.
B: the described shell mould of three covers unit is stacked vertically on the iron bottom plate, and the sprue of each shell mould unit vertically aligns.Described iron bottom plate is installed the pad pin, is used to adjust iron bottom plate to level.
C: iron covering plate on the shell mould unit upper cover that goes up most.The sprue that the middle part of described iron covering plate is provided with cup and shell mould unit aligns.Described iron covering plate with shell mould unit contact-making surface be cancave cambered surface.Described cup inwall is embedded with molding sand, to be stained with thereon after the liquid material cooling that prevents high temperature.
D: adjust the Connection Element between iron bottom plate and the iron covering plate, iron bottom plate and iron covering plate are compressed the shell mould unit.Described Connection Element uses the rectangle chase, at this moment, needs to be provided with intensive horizontal tiny lane tooth at described iron covering plate with rectangle chase contact-making surface.
E: from the liquid material of the cup of iron covering plate cast high temperature, full foundry goods die cavity, cross gate and sprue of the liquid material of high temperature under the gravity effect.
F: after the liquid material of high temperature solidifies cooling, promptly get foundry goods.
Shell mould unit mounting structure schematic diagram when producing for the present embodiment precoated sand multi-stack casting process as Fig. 1.Being stacked on the iron bottom plate 003 of three shell mould unit, topmost push down with iron covering plate 001: shell mould unit 2 is stacked in above the shell mould unit 3, and the boss of shell mould unit 2 lower surfaces inserts the groove of shell mould unit 3 upper surfaces; Shell mould unit 1 is stacked in above the shell mould unit 2, and the boss of the lower surface of shell mould unit 1 inserts the groove of shell mould unit 2 upper surfaces.Described iron bottom plate 003 is installed pad pin 004, is used to adjust iron bottom plate 003 to level.Pass through 002 fastening of rectangle chase between described iron bottom plate 003 and the iron covering plate 001.In order to ensure the steadiness that rectangle chase 002 is installed, iron covering plate 001 be provided with intensive horizontal tiny lane tooth 013 with rectangle chase 002 contact-making surface.In order to clamp the shell mould unit, can not expand loosely owing to high-temperature liquid material impacts, iron covering plate 001 both wings 011 have a down dip.
From the liquid material of the cup 012 cast high temperature of iron covering plate 001, the foundry goods die cavity of full shell mould unit after the cooled and solidified, promptly gets foundry goods.
Embodiment two:
The present embodiment precoated sand multi-stack casting process may further comprise the steps successively:
A: according to foundry goods drawing making precoated sand shell mould unit.Middle part, described shell mould unit is provided with the sprue that vertically runs through described precoated sand shell mould unit; The foundry goods die cavity is distributed in around the described sprue, and is communicated with it by cross gate.Described shell mould unit is formed by two model matched moulds of upper die and lower die, and thickens the sand mold wall in the vehement position of heat.The bottom of described shell mould unit is provided with liquid holding groove and is communicated with the foundry goods die cavity of lower floor shell mould unit, is used for the liquid material cooling procedure feeding of high temperature.
B: the described shell mould of six covers unit vertical stacking is become a building, and shell mould unit, Building totally three places on the iron bottom plate.The sprue of each shell mould unit of same building vertically aligns.Use the cohesive material adhesion to connect during described shell mould unit vertical stacking, to prevent the liquid material seepage of high temperature.Described iron bottom plate is installed the pad pin, is used to adjust iron bottom plate to level.
C: iron covering plate on the shell mould unit upper cover that goes up most.The middle part of described iron covering plate is provided with cup and is communicated with the sprue of each shell mould unit, building.Described iron covering plate with shell mould unit contact-making surface be cancave cambered surface.Described cup inwall is embedded with molding sand, to be stained with thereon after the liquid material cooling that prevents high temperature.
D: adjust the Connection Element between iron bottom plate and the iron covering plate, iron bottom plate and iron covering plate are compressed the shell mould unit.Described Connection Element uses the rectangle chase, at this moment, needs to be provided with intensive horizontal tiny lane tooth at described iron covering plate with rectangle chase contact-making surface.
E: from the liquid material of the cup of iron covering plate cast high temperature, full foundry goods die cavity, cross gate and sprue of the liquid material of high temperature under the gravity effect.
F: after the liquid material of high temperature solidifies cooling, promptly get foundry goods.
Shell mould unit mounting structure schematic diagram when producing for the present embodiment precoated sand multi-stack casting process as Fig. 2.Being stacked on the iron bottom plate 103 of shell mould unit, Building three topmost pushed down with iron covering plate 101.Shell mould unit, Building first 11, shell mould unit, Building second 12, shell mould unit, Building the 3rd 13 are formed by six shell mould unit vertical stackings respectively, use the cohesive material adhesion to connect when piling up between the adjacent shell mould unit.The cup 112 of iron covering plate 101 is communicated with the sprue of each shell mould unit, building.Described iron bottom plate 103 is installed pad pin 104, is used to adjust iron bottom plate 103 to level.Pass through 102 fastenings of rectangle chase between described iron bottom plate 103 and the iron covering plate 101.In order to ensure the steadiness that rectangle chase 102 is installed, iron covering plate 101 be provided with intensive horizontal tiny lane tooth 113 with rectangle chase 102 contact-making surfaces.In order to clamp the shell mould unit, can not expand loosely owing to high-temperature liquid material impacts, iron covering plate 101 both wings 111 have a down dip.
From the liquid material of the cup 112 cast high temperature of iron covering plate 101, the foundry goods die cavity of full shell mould unit after the cooled and solidified, promptly gets foundry goods.
Claims (10)
1. precoated sand multi-stack casting process may further comprise the steps successively:
A: according to foundry goods drawing making precoated sand shell mould unit,
Middle part, described shell mould unit is provided with the sprue that vertically runs through described precoated sand shell mould unit; The foundry goods die cavity is distributed in around the described sprue, and is communicated with it by cross gate;
B: the described shell mould of at least two covers unit is stacked vertically on the iron bottom plate, and the sprue of each shell mould unit vertically aligns;
C: iron covering plate on the shell mould unit upper cover that goes up most,
The middle part of described iron covering plate is provided with cup and is communicated with the sprue of shell mould unit;
D: adjust the Connection Element between iron bottom plate and the iron covering plate, iron bottom plate and iron covering plate are compressed the shell mould unit;
E: from the liquid material of the cup of iron covering plate cast high temperature, full foundry goods die cavity, cross gate and sprue of the liquid material of high temperature under the gravity effect;
F: after the liquid material of high temperature solidifies cooling, promptly get foundry goods.
2. precoated sand multi-stack casting process as claimed in claim 1, it is characterized in that: be respectively equipped with intermeshing groove of size or boss around the sprue of the upper surface of described shell mould unit and around the sprue of lower surface, closely connect when making the shell mould element stack to prevent the liquid material seepage of high temperature.
3. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: use the cohesive material adhesion to connect during described shell mould unit vertical stacking, to prevent the liquid material seepage of high temperature.
4. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: described shell mould unit is formed by two model matched moulds of upper die and lower die, and thickens the sand mold wall in the vehement position of heat.
5. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: the bottom of described shell mould unit is provided with liquid holding groove and is communicated with the foundry goods die cavity of lower floor shell mould unit, is used for the liquid material cooling procedure feeding of high temperature.
6. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: described iron bottom plate is installed the pad pin, is used to adjust iron bottom plate to level.
7. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: described iron covering plate with shell mould unit contact-making surface be cancave cambered surface.
8. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: described cup inwall is embedded with molding sand.
9. precoated sand multi-stack casting process as claimed in claim 1 is characterized in that: the described Connection Element of steps d is the rectangle chase.
10. precoated sand multi-stack casting process as claimed in claim 9 is characterized in that: described iron covering plate be provided with intensive horizontal tiny lane tooth with rectangle chase contact-making surface.
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| CN 201010242422 CN101879582A (en) | 2010-08-02 | 2010-08-02 | Precoated sand multi-stack casting process |
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| CN 201010242422 CN101879582A (en) | 2010-08-02 | 2010-08-02 | Precoated sand multi-stack casting process |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139353A (en) * | 2011-03-15 | 2011-08-03 | 中核苏阀横店机械有限公司 | Leakproof casting box |
| CN102319874A (en) * | 2011-08-03 | 2012-01-18 | 赵会才 | Shell mold stacking casting process of fastener and wall-through screw nut |
| CN102430720A (en) * | 2011-12-14 | 2012-05-02 | 安徽省辉煌机械制造有限公司 | Method for producing flat gaskets by coated sand shell mould process |
| CN103317099A (en) * | 2013-07-11 | 2013-09-25 | 湖北泰达机械制造有限公司 | Overlapping pouring technology for casting clutch pressure plate and automobile brake plate |
| CN103600035A (en) * | 2013-03-06 | 2014-02-26 | 南通华东油压科技有限公司 | Manufacturing technology of walking machinery bracket casting |
| CN104493087A (en) * | 2014-12-24 | 2015-04-08 | 西安合力汽车配件有限公司 | Method for producing casting by pre-coated sand shell mold |
| CN105215284A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | The casting method of disc-like metalwork |
| CN105215289A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | The string of Automobile flywheel waters casting processing technology |
| CN105215283A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | Single-column type disc cast combination die |
| CN105364018A (en) * | 2015-10-16 | 2016-03-02 | 重庆市航丰机械有限公司 | Process for manufacturing flywheels through precoated sand |
| CN105499510A (en) * | 2015-12-31 | 2016-04-20 | 广西玉林市朗泰汽车零部件有限公司 | Stack casting method of sand covering modeling |
| CN106077491A (en) * | 2016-08-09 | 2016-11-09 | 长沙金龙铸造实业有限公司 | A kind of casting moulding system and production method |
| CN106694808A (en) * | 2017-03-27 | 2017-05-24 | 江苏汽铸造股份有限公司 | Method for casting annular thin-wall castings by means of feeding stack box of gating system |
| CN106734899A (en) * | 2016-12-30 | 2017-05-31 | 安徽昱工耐磨材料科技有限公司 | The casting mould and casting method of a kind of gyratory crusher crossbeam backplate |
| CN106825418A (en) * | 2017-04-13 | 2017-06-13 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting mould component |
| CN108202130A (en) * | 2016-12-20 | 2018-06-26 | 四川都江铸造有限责任公司 | A kind of stack casting process of automobile clutch pressure plate |
| CN108246978A (en) * | 2017-12-28 | 2018-07-06 | 广东富华铸锻有限公司 | A kind of casting folds shape pouring in vertically clamped moulds casting technique |
| CN108405816A (en) * | 2018-04-04 | 2018-08-17 | 溧阳市联华机械制造有限公司 | A kind of Y types test block shell mould cast fixture |
| CN108941513A (en) * | 2018-09-26 | 2018-12-07 | 成都艾特安科技有限公司 | Metallic pressure conveys shell moulded casting method |
| CN112122548A (en) * | 2019-06-24 | 2020-12-25 | 岳西县顺达机械有限公司 | Precoated sand mold |
| CN117483650A (en) * | 2023-11-14 | 2024-02-02 | 衢州市万龙机械制造有限公司 | Wheel hub casting process |
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2010
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139353A (en) * | 2011-03-15 | 2011-08-03 | 中核苏阀横店机械有限公司 | Leakproof casting box |
| CN102319874A (en) * | 2011-08-03 | 2012-01-18 | 赵会才 | Shell mold stacking casting process of fastener and wall-through screw nut |
| CN102430720A (en) * | 2011-12-14 | 2012-05-02 | 安徽省辉煌机械制造有限公司 | Method for producing flat gaskets by coated sand shell mould process |
| CN103600035A (en) * | 2013-03-06 | 2014-02-26 | 南通华东油压科技有限公司 | Manufacturing technology of walking machinery bracket casting |
| CN103317099A (en) * | 2013-07-11 | 2013-09-25 | 湖北泰达机械制造有限公司 | Overlapping pouring technology for casting clutch pressure plate and automobile brake plate |
| CN104493087A (en) * | 2014-12-24 | 2015-04-08 | 西安合力汽车配件有限公司 | Method for producing casting by pre-coated sand shell mold |
| CN105215284A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | The casting method of disc-like metalwork |
| CN105215289A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | The string of Automobile flywheel waters casting processing technology |
| CN105215283A (en) * | 2015-10-16 | 2016-01-06 | 重庆市航丰机械有限公司 | Single-column type disc cast combination die |
| CN105364018A (en) * | 2015-10-16 | 2016-03-02 | 重庆市航丰机械有限公司 | Process for manufacturing flywheels through precoated sand |
| CN105499510A (en) * | 2015-12-31 | 2016-04-20 | 广西玉林市朗泰汽车零部件有限公司 | Stack casting method of sand covering modeling |
| CN106077491A (en) * | 2016-08-09 | 2016-11-09 | 长沙金龙铸造实业有限公司 | A kind of casting moulding system and production method |
| CN108202130A (en) * | 2016-12-20 | 2018-06-26 | 四川都江铸造有限责任公司 | A kind of stack casting process of automobile clutch pressure plate |
| CN106734899A (en) * | 2016-12-30 | 2017-05-31 | 安徽昱工耐磨材料科技有限公司 | The casting mould and casting method of a kind of gyratory crusher crossbeam backplate |
| CN106694808A (en) * | 2017-03-27 | 2017-05-24 | 江苏汽铸造股份有限公司 | Method for casting annular thin-wall castings by means of feeding stack box of gating system |
| CN106694808B (en) * | 2017-03-27 | 2018-11-27 | 江苏一汽铸造股份有限公司 | The method of Gating and feeding system stack casting annular thin wall casting |
| CN106825418A (en) * | 2017-04-13 | 2017-06-13 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting mould component |
| CN108246978A (en) * | 2017-12-28 | 2018-07-06 | 广东富华铸锻有限公司 | A kind of casting folds shape pouring in vertically clamped moulds casting technique |
| CN108405816A (en) * | 2018-04-04 | 2018-08-17 | 溧阳市联华机械制造有限公司 | A kind of Y types test block shell mould cast fixture |
| CN108941513A (en) * | 2018-09-26 | 2018-12-07 | 成都艾特安科技有限公司 | Metallic pressure conveys shell moulded casting method |
| CN112122548A (en) * | 2019-06-24 | 2020-12-25 | 岳西县顺达机械有限公司 | Precoated sand mold |
| CN117483650A (en) * | 2023-11-14 | 2024-02-02 | 衢州市万龙机械制造有限公司 | Wheel hub casting process |
| CN117483650B (en) * | 2023-11-14 | 2024-04-16 | 衢州市万龙机械制造有限公司 | Wheel hub casting process |
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Application publication date: 20101110 |