CN103056300A - Production process for high-strength sand moulds and cores added with novel chill - Google Patents

Production process for high-strength sand moulds and cores added with novel chill Download PDF

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Publication number
CN103056300A
CN103056300A CN2012105770437A CN201210577043A CN103056300A CN 103056300 A CN103056300 A CN 103056300A CN 2012105770437 A CN2012105770437 A CN 2012105770437A CN 201210577043 A CN201210577043 A CN 201210577043A CN 103056300 A CN103056300 A CN 103056300A
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Prior art keywords
sand
sand mold
fuse
chill
afterwards
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CN103056300B (en
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万荣华
杨永乾
桂建元
申小莉
李锋亮
李建立
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Tianrui Group foundry Co Ltd
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Tianrui Group foundry Co Ltd
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Abstract

The present invention relates to a casting process, namely a production process for high-strength sand moulds and cores added with a novel chill, including the steps of producing the chill, molding, core making, drying, etc., and is a good solution to various problems existing in use of the traditional chill.

Description

A kind of manufacture craft that is added with the high strength sand mold of novel chill
Technical field
The present invention relates to a kind of casting technique, specifically a kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with.
Background technology
Casting refers to will be in the room temperature treat the processing mode of its solidification forming for mold liquid but that in the near future the material that solidifies is poured into given shape, it is a kind of ancient metal fever processing technology, casting technique comprises the material preparation, moulding, coremaking, Metal Melting, cast and the step such as solidify, chill commonly used in the casting process, in Foundry Production, chill is to the effect that improves rising head and prevent that foundry goods from producing shrinkage cavity, shrinkage porosite, guarantee that casting quality plays a part outbalance, the mechanism of action of chill is to accelerate the cooling velocity of ironcasting part in casting process, ironcasting is because the needs of its structure cause the various piece wall unevenness even, position cooling velocity in cooling procedure that foundry goods is thicker is slower, the position cooling velocity that wall thickness is thinner is fast, the inequality of this cooling velocity very easily causes foundry goods to produce shrinkage cavity or drawing crack, for fear of this phenomenon, chill commonly used is used for the cooling velocity at each position of balance foundry goods during casting; The used chill material of traditional casting technique mostly is blade inserting or some reguline metals, but the relatively poor foundry goods that easily makes of this chill effect cracks, had afterwards and use ore in sand form as the chill material, but ore in sand form is expensive owing to fall, and be difficult in use make for the comparatively complicated foundry goods of some shapes, often bring very large puzzlement to Foundry Production.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with, the Novel cold iron material is adopted in this invention, in conjunction with integral casting process, has well solved the various puzzlements of using traditional chill to exist.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be: a kind of manufacture craft that is added with the high strength sand mold of novel chill, and processing step is as follows:
Step 1, Foundry sand portion, add the shot that is equivalent to roughing sand gross weight 30%-100%, the particle diameter of shot is 0.5-1.3mm, adds afterwards the waterglass of roughing sand and shot gross weight 2.5-7% as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 2, choose Foundry sand by the required sand using amount of cast casting process, add be equivalent to roughing sand total amount 6%-8% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish air-vent, for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, passing into carbon dioxide in the good air-vent of Xiang Zhashe carries out drying and processes, passing into the carbon dioxide gas temperature is 5-40 ℃, and duration of ventilation is 5-30s, namely finishes this technique after all passages are all finished the ventilation sclerosis.
Beneficial effect:
1. the manufacture craft of a kind of high strength sand mold that is added with novel chill of the present invention, the fuse novel chill that adopts foundry sands and shot to be mixed, compare with traditional casting technique, the present invention takes full advantage of the good thermal diffusivity of shot and former sand mixture, in conjunction with integral casting process, can effectively control the cooling velocity at the thicker position of foundry goods, avoid the technical problems such as crackle that foundry goods causes owing to cooling velocity is inhomogeneous, shrinkage porosite;
2. the manufacture craft of a kind of high strength sand mold that is added with novel chill of the present invention, fuse is easy to implement, compare with traditional casting technique, the easier making of novel chill used in the present invention, and easy to use, can be in conjunction with the manufacturing process of when casting sand mold, fuse, in moulding, place used novel chill among the present invention according to casting section thickness when making core, can effectively avoid in the traditional handicraft chill to place hard problem;
3. the present invention a kind ofly is added with the high strength sand mold of novel chill, the manufacture craft of fuse is compared with traditional casting technique, the present invention adopts novel chill and has higher intensity in conjunction with the prepared sand mold of integrated artistic, fuse, so that when casting sand mold, fuse do not need stud can keep original type body, simplify the conventional cast processing step, improved casting production efficiency;
4. the low cost of manufacturing process of a kind of high strength sand mold that is added with novel chill of the present invention, fuse, easy to implement is fit to promote.
The specific embodiment
Lower mask body is set forth the specific embodiment of the present invention: a kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with, and processing step is as follows:
Step 1, Foundry sand portion, add the shot that is equivalent to roughing sand gross weight 30%-100%, the particle diameter of shot is 0.5-1.3mm, adds afterwards the waterglass of roughing sand and shot gross weight 2.5-7% as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 2, choose Foundry sand by the required sand using amount of cast casting process, add be equivalent to roughing sand total amount 6%-8% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish gas hole, described gas hole is for extend to the blind hole of sand mold inside from the sand mold outer surface, and is for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, passing into carbon dioxide in the good air-vent of Xiang Zhashe carries out drying and processes, passing into the carbon dioxide gas temperature is 5-40 ℃, and duration of ventilation is 5-30s, namely finishes this technique after all passages are all finished the ventilation sclerosis.
The used foundry sands of the present invention is high grade quartz sand, institute uses the shot particle diameter to be 0.5-1.3mm, can directly purchase in market, the waterglass that adds corresponding proportion after roughing sand mixes with shot, use as novel chill after mixing, in moulding, when making core, can place novel chill according to the corresponding site needs of casting sand mold, when adding chill, can be according to the shape needs of foundry goods, after the relevant position adds a certain amount of sand, add required chill amount according to the volume of foundry goods corresponding site, Deng moulding, after making the core process and finishing, chill becomes sand mold immediately, the part of fuse is based on this sand mold, the bulk strength of fuse is improved, and chill and sand mold, the combination of fuse is more tight, when having saved stud, also so that the placement of chill becomes simple;
Moulding, prick on the sand mold again after making core and finishing and establish air-vent, the bundle of air-vent is established according to the need of production setting, and in industry all without fixing and unified standard, this belongs to known in industry for the degree of depth of air-vent, pore size and position distribution, be under the jurisdiction of prior art, repeat no more;
The dry run of sand mold, fuse adopts the carbon dioxide seasoning, utilize the carbon dioxide generating device by breather pipe gas to be passed in the air-vent on sand mold, the fuse, passing into the carbon dioxide gas temperature is 5-40 ℃, time is 5-30s, wherein the time that passes into of gas also can decide according to site operation personnel's experience, concrete determination methods is artificial hand-held nail, until firmly prick sand mold, core surface, prick when motionless, the hardening strength of sand mold, fuse namely reaches requirement, finish sand mold, the fuse after in steps namely can be used for cast.
Embodiment one,
A kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with, processing step is as follows:
Step 1, Foundry sand are a, add the shot that is equivalent to roughing sand gross weight 30%, and the particle diameter of shot is 0.5mm, adds afterwards the waterglass of roughing sand and shot gross weight 7% as adhesive, and be must compound after putting into afterwards puddle mixer and mixing for subsequent use;
Step 2, choose Foundry sand by the required sand using amount of cast casting process, add be equivalent to roughing sand total amount 6% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish gas hole, described gas hole is for extend to the blind hole of sand mold inside from the sand mold outer surface, and is for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, pass into carbon dioxide in the good air-vent of Xiang Zhashe and carry out drying and process, passing into the carbon dioxide gas temperature is 5 ℃, and duration of ventilation is 5s, namely finishes this technique after all passages are all finished the ventilation sclerosis.
Embodiment two,
A kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with, it is characterized in that: processing step is as follows:
Step 1, Foundry sand are a, add the shot that is equivalent to roughing sand gross weight 70%, and the particle diameter of shot is 0.9mm, adds afterwards the waterglass of roughing sand and shot gross weight 5% as adhesive, and be must compound after putting into afterwards puddle mixer and mixing for subsequent use;
Step 2, choose Foundry sand by the required sand using amount of cast casting process, add be equivalent to roughing sand total amount 7% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish gas hole, described gas hole is for extend to the blind hole of sand mold inside from the sand mold outer surface, and is for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, passing into carbon dioxide in the good air-vent of Xiang Zhashe carries out drying and processes, passing into the carbon dioxide gas temperature is 25 ℃, and duration of ventilation is 20s, namely finishes this technique after all passages are all finished the ventilation sclerosis.
Embodiment three,
A kind of high strength sand mold of novel chill, manufacture craft of fuse of being added with, it is characterized in that: processing step is as follows:
Step 1, Foundry sand are a, add the shot that is equivalent to roughing sand gross weight 100%, and the particle diameter of shot is 1.3mm, adds afterwards the waterglass of roughing sand and shot gross weight 2.5% as adhesive, and be must compound after putting into afterwards puddle mixer and mixing for subsequent use;
Step 2, choose Foundry sand by the required sand using amount of cast casting process, add be equivalent to roughing sand total amount 8% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish gas hole, described gas hole is for extend to the blind hole of sand mold inside from the sand mold outer surface, and is for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, passing into carbon dioxide in the good air-vent of Xiang Zhashe carries out drying and processes, passing into the carbon dioxide gas temperature is 40 ℃, and duration of ventilation is 30s, namely finishes this technique after all passages are all finished the ventilation sclerosis.

Claims (1)

1. one kind is added with the high strength sand mold of novel chill, the manufacture craft of fuse, and it is characterized in that: processing step is as follows:
Step 1, choose Foundry sand, add the shot that is equivalent to roughing sand gross weight 30%-100%, the particle diameter of shot is 0.5-1.3mm, adds afterwards the waterglass of roughing sand and shot gross weight 2.5-7% as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 2, choose Foundry sand, add be equivalent to roughing sand gross weight 6%-8% waterglass as adhesive, after putting into afterwards puddle mixer and mixing compound is for subsequent use;
Step 3, get step 2 gained compound and carry out moulding, make core, in moulding, make in the process of core, sand mold, fuse need to place the position of chill place the step 1 gained compound as chill, get behind sand mold, the fuse for subsequent use;
Step 4, prick at step 3 gained sand mold, fuse and to establish gas hole, described gas hole is for extend to the blind hole of sand mold inside from the sand mold outer surface, and is for subsequent use afterwards;
Step 5, get step 4 gained sand mold, fuse, passing into carbon dioxide in the good air-vent of Xiang Zhashe carries out drying and processes, passing into the carbon dioxide gas temperature is 5-40 ℃, and duration of ventilation is 5-30s, namely finishes this technique after all passages are all finished the ventilation sclerosis.
CN201210577043.7A 2012-12-27 2012-12-27 Production process for high-strength sand moulds and cores added with novel chill Active CN103056300B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308156A (en) * 2014-11-13 2015-01-28 四川南车共享铸造有限公司 Composition for three-dimensional print casting and applications thereof
CN106001392A (en) * 2016-05-30 2016-10-12 柳州市柳晶科技有限公司 Inorganic precoated sand and production method thereof
CN106734859A (en) * 2017-02-27 2017-05-31 李水金 A kind of high thermal conductive resin sand and its production method
CN106734893A (en) * 2016-11-29 2017-05-31 贵州安吉航空精密铸造有限责任公司 A kind of method for solving light-alloy sand-cast rarefaction defect
CN107745085A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 Chill and the core design method and chill laying method for being easy to place chill
CN107745084A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 A kind of combining structure and design method of core chill
CN108421960A (en) * 2018-03-19 2018-08-21 河北硕凯铸造有限公司 One kind is with type chill and its preparation process
CN109622878A (en) * 2018-12-28 2019-04-16 浙江佳力风能技术有限公司 Improve the molding sand and method of casting mold cooling velocity

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CN1041716A (en) * 1988-10-08 1990-05-02 江丽娜 Precision casting technology for die impression
US4951731A (en) * 1989-10-10 1990-08-28 Farley, Inc. Process for washing a casting core
CN102240778A (en) * 2011-07-03 2011-11-16 湖北庚联耐磨材料科技有限公司 Lost wax shell-based negative pressure dry sand and iron shot chilling vibrational casting process method
CN102366821A (en) * 2011-10-24 2012-03-07 大连交通大学 Green lost foam casting technology
CN102371339A (en) * 2011-10-09 2012-03-14 湖北庚联耐磨材料科技有限公司 Casting process method combining steel-shot chilling and vibratory pouring based on disappearing die

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1041716A (en) * 1988-10-08 1990-05-02 江丽娜 Precision casting technology for die impression
US4951731A (en) * 1989-10-10 1990-08-28 Farley, Inc. Process for washing a casting core
CN102240778A (en) * 2011-07-03 2011-11-16 湖北庚联耐磨材料科技有限公司 Lost wax shell-based negative pressure dry sand and iron shot chilling vibrational casting process method
CN102371339A (en) * 2011-10-09 2012-03-14 湖北庚联耐磨材料科技有限公司 Casting process method combining steel-shot chilling and vibratory pouring based on disappearing die
CN102366821A (en) * 2011-10-24 2012-03-07 大连交通大学 Green lost foam casting technology

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308156A (en) * 2014-11-13 2015-01-28 四川南车共享铸造有限公司 Composition for three-dimensional print casting and applications thereof
CN106001392A (en) * 2016-05-30 2016-10-12 柳州市柳晶科技有限公司 Inorganic precoated sand and production method thereof
CN106734893A (en) * 2016-11-29 2017-05-31 贵州安吉航空精密铸造有限责任公司 A kind of method for solving light-alloy sand-cast rarefaction defect
CN106734859A (en) * 2017-02-27 2017-05-31 李水金 A kind of high thermal conductive resin sand and its production method
CN107745085A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 Chill and the core design method and chill laying method for being easy to place chill
CN107745084A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 A kind of combining structure and design method of core chill
CN108421960A (en) * 2018-03-19 2018-08-21 河北硕凯铸造有限公司 One kind is with type chill and its preparation process
CN109622878A (en) * 2018-12-28 2019-04-16 浙江佳力风能技术有限公司 Improve the molding sand and method of casting mold cooling velocity

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