CN1555943A - Technology and mould for fast production of automobile brake drum casting sand mould - Google Patents
Technology and mould for fast production of automobile brake drum casting sand mould Download PDFInfo
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- CN1555943A CN1555943A CNA2004100216040A CN200410021604A CN1555943A CN 1555943 A CN1555943 A CN 1555943A CN A2004100216040 A CNA2004100216040 A CN A2004100216040A CN 200410021604 A CN200410021604 A CN 200410021604A CN 1555943 A CN1555943 A CN 1555943A
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- automobile brake
- brake drum
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Abstract
A technology for quickly preparing the casting sand mould includes proportionally mixing water glass with crude sand chosen from self-hardening water glass-ferrosilicon powder sand, synthetic resin sand, wet moulding sand, self-hardening water glass-red earth sand, etc to obtain casting sand, filling it in mould, and blowing CO2 gas in the casting sand via fine tube for 5-180 S.
Description
Technical field: the present invention relates to a kind of technology of quick production casting sand mo(u)ld, be specially adapted to make automobile brake drum internal mold loam core, belong to the casting mould field.
Background technology: at first need in the foundry technology process to make sand mo(u)ld according to part shape, make the die cavity consistent with the part blank in sand mo(u)ld, pouring molten iron finally obtains cast blank in part blank die cavity then.Some part inside is certain hollow shape, therefore need be in the sand mo(u)ld die cavity certain position join and put internal mold (loam core), the method of making the loam core is identical in the mode of making sand mo(u)ld, but after the loam core is made, its surface needs a coating and puts into baking oven (room) baking and do, perhaps directly with wet model sand mold.Afterwards, the loam core is placed into certain position in the sand mo(u)ld, inaccurate as the loam core putting position, its casting back rough casting size can misplace, and particularly adopts each loam core placement location of Artificial Control, very difficulty, casting yield is low, foundry goods allowance is big, and labour intensity is big, work efficiency is low.
Roughing sand is to mix mutually with Modeling Material such as water to constitute the molding sand that mold is used in the conventional cast technology, with sand mo(u)ld molding sand is made as difform die cavity again.Molding sand can easily cause bleb in the sand mo(u)ld when water content is too much; When the water yield contains when very few, again can moulding sand intensity low, mold edge corner section bit-type sand subsides, and casting dimension is undesirable, and easily burning into sand forms waste product.This requires high to the technical merit of making the sand mo(u)ld workman, back-up sand pickup inconvenience, efficient are low, the loam core quality is difficult for ensureing, and the venting quality in loam core is poor, also cause core shift down during core easily.
Summary of the invention: the objective of the invention is to overcome the problems referred to above, invent a kind of technology of quick production casting sand mo(u)ld, be specially adapted to make automobile brake drum internal mold loam core.Allow the sand mo(u)ld back setting fast that is shaped, its quality be easy to control, get that core is convenient, make efficiency is high, venting quality good, down can core shift during core, workman's technical merit is required lower, promptly learn the i.e. technology and the mould of usefulness.
To achieve these goals, the invention provides the process program of following quick production automobile brake drum casting sand mo(u)ld:
The feature of this technology is to be mixed mutually by roughing sand and waterglass with molding sand and constitute the mold molding sand being used to make mold, and molding sand is filled after moulding is shaped, and is blown into carbon dioxide with tubule in the molding sand of shaping; Its roughing sand: waterglass=100: 5-15; The time that is blown into carbon dioxide is 5-180 second; Described roughing sand is waterglass ferrosilicon powder self-hardening sand, synthetic resin sand, wet sand, waterglass red mud self-hardening sand, waterglass liquid self-hardening sand and mould drying sand.
The present invention produces automobile brake drum casting sand mo(u)ld mould fast, it is characterized in that mould is made up of core box mould, arbor, the combination of lumens constituent part blank loam core shape of core box mould, there is the positioning through hole that inserts the location for arbor at core box mold bottom center, and the arbor lower end can be useful on the arbor head of location; The core box mould constitutes at vertical symmetrical dimidiation, and core box mould appearance is useful on the fixedly ear that they are connected; Perhaps the card spoke that is symmetrically distributed with two halves at the bottom of by core box of core box mould constitutes jointly, and appearance is useful on the fixedly ear that they are connected; Perhaps be integral structure at the bottom of card spoke and the core box in the core box mould, its card spoke inwall has pattern draft; Perhaps the core box mould constitutes with the entire card spoke on top at the bottom of by the core box of bottom, and its card spoke inwall has pattern draft; Locate by concavo-convex fit structure or alignment pin, locating hole, locating slot socket the upper end at the bottom of card spoke lower end and the core box, and intracavity bottom has corresponding groove at the bottom of the core box, but groove draw-in groove or cotter way; Arbor can be hollow netted, vertical bar shape, irregular cross-like, perhaps tubulose, and its outer tubular wall is held sand with lattice framing or projection, and there are inner flange or outward flange handgrips in the arbor upper end.
The corresponding one-tenth mould of the present invention is owing to adopt the card spoke and the core box bottom die structure of the arbor and the easy accessibility that have location structure and pickup handle, thereby have the coremaking precision and be easy to guarantee, produce the core processing ease, reduce workman's industrial grade, promptly learn i.e. usefulness, production efficiency height, advantage that can core shift when core is played because of positioning head is arranged in the loam core that obtains; Simultaneously, the loam core degree of packing that makes is even, exhaust is even, outward appearance is clean and tidy, makes bright and clean, the no burning into sand of cast(ing) surface after the moulding, reduces defective such as pore, has significantly reduced allowance, has saved molten iron.
The physical hardening of technology utilization waterglass of the present invention and chemicosolidifying diversity principle, roughing sand and waterglass are mixed into the molding sand of casting usefulness, with this molding sand founding moulding, mold to filling molding is blown into carbon dioxide, allow it rapidly from hard, raise the efficiency, reduce technical difficulty, loam core after the moulding or mold need not enter drying room baking, shortening cycle again.And need not large-scale sand blender and a large amount of molding sand.Internal mold (loam core) can be made into hollow and solid, makes when hollow, and sand using amount only is solid half, saves molding sand and Modeling Material, and higher because of precision, the product allowance after the moulding is few, and only the 1.5-2.5 millimeter is saved molten iron, improves yield rate.
The present invention overcome traditional handicraft because of loam core (internal mold) face cause pore that product occurs, burning into sand, monolateral, allowance big, the sand removal workload big, core (joining case) trouble down.This technological operation is simple, labourer's industrial grade is required low, promptly learns and can grasp, and reduces the operating technology cost, and the loam core precision height after the moulding, consolidation are even, get rid of and collapsibility good, weatherproof, sand removal easily, pollute little.
Description of drawings: further specify essence of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the cross-sectional schematic of invention mould, and wherein core print (5) is the convex-concave fit structure.
Fig. 2 schematic top plan view of the present invention, wherein the core box mould is the symmetrical two halves of dividing equally.
Fig. 3 is the cross-sectional schematic of invention mould, and wherein core print (5) is directly parallel with core box outer wall wall.
Fig. 4 is the cross-sectional schematic of invention mould, and wherein core print (5) is parallel with core box inwall wall.
Fig. 5 is a process chart of the present invention.
The specific embodiment: embodiment 1 (making automobile brake drum internal mold loam core): as shown in Figure 1, automobile brake drum internal mold loam core mould is made up of core box mould, hollow arbor, the core box mould selects for use card spoke (2) three positions that are symmetrically distributed by (1) at the bottom of the core box and left and right sides two halves to constitute jointly, their combination of lumens forms automobile brake drum internal mold loam core shape, (1) upper end is by concavo-convex fit structure socket at the bottom of card spoke (2) lower end and the core box, the location between at the bottom of concavo-convex fit structure assurance spoke lower end and the core box; (1) intracavity bottom has a groove at the bottom of the core box, with termination, location, shape loam core, locatees when being used to put into die cavity; Bottom centre has one to insert the positioning through hole (6) of location for core print (6) at the bottom of the box, and there are inner flange or outward flange handgrips in arbor head (5), upper end that arbor (3) termination is useful on the location, by this handle arbor (3) of can choosing easily.Core box mould and arbor (3) are selected for use by metal material and are made.
By process chart shown in Figure 5, roughing sand is selected waterglass ferrosilicon powder self-hardening sand for use, the ratio that roughing sand mixes with waterglass is 100: 5, roughing sand and waterglass are mixed, be molding sand for casting usefulness, press conventional cast technology, earlier with the fixedly ear (4) on the two halves core box mould outer wall of the bolting left and right sides, put into arbor (3) again, tamp casting mould (as shown in Figure 1) with the molding sand for preparing, in the molding sand after tubule insert to be shaped, be blown into about 5-8 of time second of carbon dioxide, allow the die cavity after the whole shaping harden, the arbor (3) of choosing earlier, folding removes fixedly ear (4) bolt of card spoke (2) outer wall again, and the card spoke (2) that left and right sides two halves are symmetrically distributed unclamps naturally, and the internal mold of shaping (loam core) is deviate from.
Embodiment 2: fixedlyed connected up and down with card spoke (2) (1) at the bottom of the core box mould was selected core box for use, cuts open in the longitudinal direction symmetry of core box mould, forms left side core box mould and right side core box mould two partly, bad internal mold shape of the combination of lumens shape of core box mould casting hair; In core box dies cavity bottom one groove is arranged, constitute location, loam core core print, locate when being used to put into the loam core; Core box mold bottom center has one to insert the positioning through hole (6) of location for core print (6), and there are inner flange or outward flange handle in core print (5), upper end that arbor (3) termination is useful on the location, by this handle arbor (3) of can choosing easily.The core box mould selects for use glass-reinforced plastic material to make, and arbor selects for use the wire netting material to make.
By process chart shown in Figure 5, roughing sand is selected waterglass ferrosilicon powder self-hardening sand for use, the ratio that roughing sand mixes with waterglass is 100: 10, roughing sand and waterglass are mixed, be molding sand for casting usefulness, press conventional cast technology, earlier with the fixedly ear (4) on the two halves core box mould outer wall of the bolting left and right sides, put into arbor (3) again, tamp casting mould with the molding sand for preparing, in the molding sand after tubule insert is shaped, be blown into about 15-18 of time second of carbon dioxide, allow the die cavity after the whole shaping harden, the arbor (3) of choosing earlier, folding removes the bolt on the fixing ear (4) again, and the core box mould of left and right sides two halves symmetrical distribution unclamps naturally, and the internal mold of shaping (loam core) is deviate from.
Embodiment 3 (making the massive casting sand mo(u)ld): mould is by the core box mould, hollow arbor is formed, wherein the card spoke (2) in the core box mould can be fixed to one structure with (1) at the bottom of the core box, core box mould outer wall need not fixedly ear (4), but the core box mould inner wall should have the pattern draft and the handle of 1-5 degree, the internal cavities of core box mould is a mold cavity, there is a positioning through hole for core print (6) insertion location at core box mold bottom center, arbor (3) termination is useful on the core print (5) of location, there are inner flange or outward flange handle in arbor (3) upper end, and people can take out arbor (3) easily by this handle.Core box mould and arbor (3) option is made of metal material.
By process chart shown in Figure 5, roughing sand is selected waterglass ferrosilicon powder self-hardening sand for use, the ratio that roughing sand mixes with waterglass is 100: 15, roughing sand and waterglass are mixed, be molding sand for casting usefulness, press conventional cast technology, earlier with the fixedly ear (4) on the two halves core box mould outer wall of the bolting left and right sides, put into arbor (3) again, tamp casting mould with molding sand, in the molding sand after the tubule insertion is shaped, be blown into about 180 seconds of the time of carbon dioxide, allow die cavity sclerosis after the whole shaping, sand mold is poured out from the core box mould.
Embodiment 4: mould is made up of core box mould, hollow arbor, and (1) constitutes with the entire card spoke (2) on top at the bottom of the core box of core box mould by the bottom, and its inwall has pattern draft.The hair bad shape of the inner chamber of core box mould for making, there is a positioning through hole (6) for core print (6) insertion location in (1) bottom centre at the bottom of the core box, there are inner flange or outward flange handle in core print (6), upper end that arbor (3) termination is useful on the location, can get core easily by this handle.The upper end is by concavo-convex fit structure socket at the bottom of card spoke lower end and the core box, the location between at the bottom of concavo-convex fit structure assurance spoke lower end and the core box; Intracavity bottom has a groove or alignment pin, locating hole, locating slot socket at the bottom of the core box, with termination, location, loam core, locatees when being used to put into die cavity.The core box mould selects for use timber to make, and arbor is made by metal material.
By process chart shown in Figure 5, roughing sand is selected waterglass ferrosilicon powder self-hardening sand for use, and the ratio that roughing sand mixes with waterglass is 100: 8, roughing sand and waterglass are mixed, be molding sand, press conventional cast technology, put into arbor (3) again for casting usefulness, tamp casting mould with molding sand, in the molding sand after tubule insert is shaped, be blown into about 120 seconds of the time of carbon dioxide, allow die cavity sclerosis after the whole shaping, the entire card spoke (2) on top is extracted, and sand mold is poured out.
Claims (10)
1, produces the technology of automobile brake drum casting sand mo(u)ld fast, it is characterized in that making cast iron and mix mutually by roughing sand and waterglass with molding sand and constitute the mold molding sand, after the molding sand filling moulding shaping, in the molding sand of shaping, be blown into carbon dioxide.
2, the technology of quick production automobile brake drum casting sand mo(u)ld according to claim 1 is characterized in that roughing sand: waterglass=100: 5-15.
3, the technology of quick production automobile brake drum casting sand mo(u)ld according to claim 1 and 2, the time that it is characterized in that being blown into carbon dioxide is 5-180 second.
4, according to claim 1 technology of 2 described quick production automobile brake drums casting sand mo(u)lds in other words, it is characterized in that described roughing sand is waterglass ferrosilicon powder self-hardening sand, synthetic resin sand, wet sand, waterglass red mud self-hardening sand, waterglass liquid self-hardening sand and mould drying sand.
5, the technology of quick production automobile brake drum casting sand mo(u)ld according to claim 3 is characterized in that described roughing sand is waterglass ferrosilicon powder self-hardening sand, synthetic resin sand, wet sand, waterglass red mud self-hardening sand, waterglass liquid self-hardening sand and mould drying sand.
6, quick production automobile brake drum casting sand mo(u)ld mould according to claim 1 and 2, it is characterized in that mould is made up of core box mould, arbor, the combination of lumens constituent part blank loam core shape of core box mould, there is the positioning through hole (6) that inserts the location for arbor (3) at core box mold bottom center, and arbor (3) lower end can be useful on the arbor head (5) of location.
7, quick production automobile brake drum casting sand mo(u)ld mould according to claim 6 is characterized in that the core box mould constitutes at vertical symmetrical dimidiation, and core box mould appearance is useful on the fixedly ear (4) that they are connected; Perhaps the card spoke (2) that is symmetrically distributed of (1) and two halves is common at the bottom of by core box constitutes for the core box mould, and appearance is useful on the fixedly ear (4) that they are connected; Perhaps block spoke (2) in the core box mould and be integral structure with (1) at the bottom of the core box, its card spoke (2) inwall has pattern draft; Perhaps the entire card spoke (2) on (1) and top constitutes at the bottom of the core box of core box mould by the bottom, and its card spoke (2) inwall has pattern draft.
8, quick production automobile brake drum casting sand mo(u)ld mould according to claim 6, it is characterized in that at the bottom of card spoke (2) lower end and the core box that (1) upper end locatees by concavo-convex fit structure or alignment pin, locating hole, locating slot socket, (1) intracavity bottom has corresponding groove at the bottom of the core box, but groove draw-in groove or cotter way.
9, quick production automobile brake drum casting sand mo(u)ld mould according to claim 7, it is characterized in that at the bottom of card spoke (2) lower end and the core box that (1) upper end locatees by concavo-convex fit structure or alignment pin, locating hole, locating slot socket, (1) intracavity bottom has corresponding groove at the bottom of the core box, but groove draw-in groove or cotter way.
10, quick production automobile brake drum casting sand mo(u)ld mould as claimed in claim 6, it is characterized in that arbor (3) can be hollow netted, vertical bar shape, irregular cross-like, perhaps tubulose, its outer tubular wall is held sand with lattice framing or projection, and inner flange or outward flange handgrips are arranged on the arbor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100216040A CN1555943A (en) | 2004-01-02 | 2004-01-02 | Technology and mould for fast production of automobile brake drum casting sand mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100216040A CN1555943A (en) | 2004-01-02 | 2004-01-02 | Technology and mould for fast production of automobile brake drum casting sand mould |
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| CN1555943A true CN1555943A (en) | 2004-12-22 |
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| CNA2004100216040A Pending CN1555943A (en) | 2004-01-02 | 2004-01-02 | Technology and mould for fast production of automobile brake drum casting sand mould |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837429A (en) * | 2010-05-31 | 2010-09-22 | 齐齐哈尔轨道交通装备有限责任公司 | Carbon dioxide hardened sodium silicate sand swage sand shooting modeling method |
| CN102581221A (en) * | 2012-03-16 | 2012-07-18 | 常熟市伟恒模具铸造有限公司 | Green sand single box feederless foundry method for glass mold |
| CN101767157B (en) * | 2008-12-30 | 2013-02-20 | 财团法人金属工业研究发展中心 | Composite material rapid tooling manufacturing method |
| CN105402243A (en) * | 2015-12-18 | 2016-03-16 | 河北鼎邦机械设备有限公司 | Integrally cast connecting rod of coal mining machine and processing technology of integrally cast connecting rod |
| CN110345179A (en) * | 2019-06-26 | 2019-10-18 | 高邮市松艾制动配件厂 | A kind of drum brakes hoof and its manufacturing method |
| CN110961575A (en) * | 2019-12-16 | 2020-04-07 | 宁国市铸丰钢球铸造有限公司 | Molding method of sand mold |
| CN113399626A (en) * | 2021-05-24 | 2021-09-17 | 东风锻造有限公司 | Thin-wall sand core chill positioning mechanism |
| CN115464098A (en) * | 2022-07-25 | 2022-12-13 | 芜湖中铁轨道装备有限公司 | Track frog casting mold and manufacturing process |
-
2004
- 2004-01-02 CN CNA2004100216040A patent/CN1555943A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767157B (en) * | 2008-12-30 | 2013-02-20 | 财团法人金属工业研究发展中心 | Composite material rapid tooling manufacturing method |
| CN101837429A (en) * | 2010-05-31 | 2010-09-22 | 齐齐哈尔轨道交通装备有限责任公司 | Carbon dioxide hardened sodium silicate sand swage sand shooting modeling method |
| CN102581221A (en) * | 2012-03-16 | 2012-07-18 | 常熟市伟恒模具铸造有限公司 | Green sand single box feederless foundry method for glass mold |
| CN105402243A (en) * | 2015-12-18 | 2016-03-16 | 河北鼎邦机械设备有限公司 | Integrally cast connecting rod of coal mining machine and processing technology of integrally cast connecting rod |
| CN105402243B (en) * | 2015-12-18 | 2018-06-26 | 辛集市卓越环保洁净煤有限公司 | A kind of coalcutter one casting type connecting rod and its processing technology |
| CN110345179A (en) * | 2019-06-26 | 2019-10-18 | 高邮市松艾制动配件厂 | A kind of drum brakes hoof and its manufacturing method |
| CN110345179B (en) * | 2019-06-26 | 2020-09-04 | 高邮市松艾制动配件厂 | Drum brake shoe and manufacturing method thereof |
| CN110961575A (en) * | 2019-12-16 | 2020-04-07 | 宁国市铸丰钢球铸造有限公司 | Molding method of sand mold |
| CN110961575B (en) * | 2019-12-16 | 2021-07-13 | 宁国市铸丰钢球铸造有限公司 | Molding method of sand mold |
| CN113399626A (en) * | 2021-05-24 | 2021-09-17 | 东风锻造有限公司 | Thin-wall sand core chill positioning mechanism |
| CN115464098A (en) * | 2022-07-25 | 2022-12-13 | 芜湖中铁轨道装备有限公司 | Track frog casting mold and manufacturing process |
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