CN104959547A - Flange casting process - Google Patents
Flange casting process Download PDFInfo
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- CN104959547A CN104959547A CN201510380298.8A CN201510380298A CN104959547A CN 104959547 A CN104959547 A CN 104959547A CN 201510380298 A CN201510380298 A CN 201510380298A CN 104959547 A CN104959547 A CN 104959547A
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Abstract
The invention provides a flange casting process. The flange casting process comprises the following steps: (1) smelting; (2) mold preparation; (3) pouring; (4) cooling. The flange casting process has the beneficial effects that since steel materials are used as main raw materials, the hardness of the flange is improved; since the flange is directly poured and molded through a flange mold obtained through a sand mold, the steps are fewer and the manufacturing cost is reduced; since the pouring is completed within 25 to 30s, the pouring uniformity is guaranteed, the pores are reduced, the utilization rate of the steel materials is high, the surface of the obtained flange is smooth, the crack rate is low, and the hardness is high.
Description
Technical field
The invention belongs to casting technology field, particularly relate to a kind of flange casting technique.
Background technology
In recent years, at present, casting technique generally comprises moulding, cast, and cooling and knockout, the effect of molding sand in Foundry Production is very important, and the casting wasted product caused because of the poor quality of molding sand accounts for 30 ~ 50% of the total waste product of foundry goods.Usually to the requirement of molding sand be: 1. there is higher intensity and heat endurance, to bear the effect of various external force and high temperature.2. good mobility, i.e. the ability of molding sand mutual movement between sand grains under external force or Action of Gravity Field own.3. certain plasticity, namely molding sand is out of shape under external force, can keep the ability of the shape given after external force is removed.4. good gas permeability, namely molding sand hole is through the ability of gas.5. high collapsibility, whether, also known as knockability, namely after casting solidification, whether molding sand easily destroys, the easy performance removed from foundry goods.Common molding sand primarily of roughing sand, be stained with the compositions such as class binding agent, water and coal dust, it often well can not have the above-mentioned requirement to molding sand.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: the object of the present invention is to provide a kind of flange casting technique.
(2) technical scheme
The invention provides a kind of flange casting technique, comprise following step:
(1) melting: steel are placed in electric furnace melting, add refining agent, obtain molten steel, in molten steel, sulfur content is less than 0.02%, and phosphorus content is less than 0.02%, phosphorus content is 0.05-0.08%, silicon content 0.2-0.25%, manganese content 0.35-0.45%;
(2) mould prepares: manufacturing flange mould, and described flange mould makes according to required size, flange mould is put into molding sand box, obtains sand mold;
(3) pour into a mould: by the pouring molten steel in step (1) in the sand mold in step (2), pouring temperature is 1450-1550 DEG C, and the duration of pouring is 25-30s, after casting complete, insulation 20-25min;
(4) cool: to be cooled to normal temperature, take out shaping flange, effects on surface is cleared up, and obtains flange after polishing.
Preferably, described molding sand is made up of the raw material of following parts by weight: silica sand 100 parts, waterglass 6-8 part, water 12-16 part, phenolic resins 3-6 part, silicone oil 1-4 part, bentonite 10-12 part and aluminium triphosphate 2-4 part.
Beneficial effect of the present invention, casting technique of the present invention adopts steel as primary raw material, improves the hardness of flange itself, the flange mould obtained by sand mold, direct pouring is shaping, and operation is less, reduces cost of manufacture, be cast in the uniformity that 25-30s ensure that cast, reduce pore, steel utilization ratio is high, and the flange surface obtained is smooth, cracking breakout is low, and hardness is high.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
The invention provides a kind of flange casting technique, comprise following step:
(1) melting: steel are placed in electric furnace melting, add refining agent, obtain molten steel, in molten steel, sulfur content is less than 0.02%, and phosphorus content is less than 0.02%, phosphorus content is 0.05-0.08%, silicon content 0.2-0.25%, manganese content 0.35-0.45%;
(2) mould prepares: manufacturing flange mould, and described flange mould makes according to required size, flange mould is put into molding sand box, obtains sand mold;
(3) pour into a mould: by the pouring molten steel in step (1) in the sand mold in step (2), pouring temperature is 1450-1550 DEG C, and the duration of pouring is 25-30s, after casting complete, insulation 20-25min;
(4) cool: to be cooled to normal temperature, take out shaping flange, effects on surface is cleared up, and obtains flange after polishing.
Preferably, described molding sand is made up of the raw material of following parts by weight: silica sand 100 parts, waterglass 6-8 part, water 12-16 part, phenolic resins 3-6 part, silicone oil 1-4 part, bentonite 10-12 part and aluminium triphosphate 2-4 part.
Beneficial effect of the present invention, casting technique of the present invention adopts steel as primary raw material, improves the hardness of flange itself, the flange mould obtained by sand mold, direct pouring is shaping, and operation is less, reduces cost of manufacture, be cast in the uniformity that 25-30s ensure that cast, reduce pore, steel utilization ratio is high, and the flange surface obtained is smooth, cracking breakout is low, and hardness is high.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (2)
1. a flange casting technique, is characterized in that, comprises following step:
(1) melting: steel are placed in electric furnace melting, add refining agent, obtain molten steel, in molten steel, sulfur content is less than 0.02%, and phosphorus content is less than 0.02%, phosphorus content is 0.05-0.08%, silicon content 0.2-0.25%, manganese content 0.35-0.45%;
(2) mould prepares: manufacturing flange mould, and described flange mould makes according to required size, flange mould is put into molding sand box, obtains sand mold;
(3) pour into a mould: by the pouring molten steel in step (1) in the sand mold in step (2), pouring temperature is 1450-1550 DEG C, and the duration of pouring is 25-30s, after casting complete, insulation 20-25min;
(4) cool: to be cooled to normal temperature, take out shaping flange, effects on surface is cleared up, and obtains flange after polishing.
2. according to a kind of flange casting technique described in claim 1, it is characterized in that, described molding sand is made up of the raw material of following parts by weight: silica sand 100 parts, waterglass 6-8 part, water 12-16 part, phenolic resins 3-6 part, silicone oil 1-4 part, bentonite 10-12 part and aluminium triphosphate 2-4 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380298.8A CN104959547A (en) | 2015-07-02 | 2015-07-02 | Flange casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380298.8A CN104959547A (en) | 2015-07-02 | 2015-07-02 | Flange casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104959547A true CN104959547A (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510380298.8A Pending CN104959547A (en) | 2015-07-02 | 2015-07-02 | Flange casting process |
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| CN (1) | CN104959547A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344920A (en) * | 2015-10-08 | 2016-02-24 | 蚌埠冠宜型材科技有限公司 | Sodium silicate binder for improving collapsibility |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
| CN107214298A (en) * | 2017-06-22 | 2017-09-29 | 霍山县忠福机电科技有限公司 | A kind of high pressure draining valve shell casting technique |
| CN107876706A (en) * | 2017-11-06 | 2018-04-06 | 太湖县爱杰机械铸造有限公司 | A kind of casting technique of valve body |
| CN110640078A (en) * | 2019-09-29 | 2020-01-03 | 佛山市高明利钢精密铸造有限公司 | Molding sand binder for casting |
| CN110653331A (en) * | 2019-09-29 | 2020-01-07 | 佛山市高明利钢精密铸造有限公司 | Preparation method of molding sand binder for casting |
| CN115255281A (en) * | 2022-07-19 | 2022-11-01 | 石家庄市宏森熔炼铸造有限公司 | Casting process of high-precision casting and casting |
-
2015
- 2015-07-02 CN CN201510380298.8A patent/CN104959547A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344920A (en) * | 2015-10-08 | 2016-02-24 | 蚌埠冠宜型材科技有限公司 | Sodium silicate binder for improving collapsibility |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
| CN107214298A (en) * | 2017-06-22 | 2017-09-29 | 霍山县忠福机电科技有限公司 | A kind of high pressure draining valve shell casting technique |
| CN107876706A (en) * | 2017-11-06 | 2018-04-06 | 太湖县爱杰机械铸造有限公司 | A kind of casting technique of valve body |
| CN110640078A (en) * | 2019-09-29 | 2020-01-03 | 佛山市高明利钢精密铸造有限公司 | Molding sand binder for casting |
| CN110653331A (en) * | 2019-09-29 | 2020-01-07 | 佛山市高明利钢精密铸造有限公司 | Preparation method of molding sand binder for casting |
| CN115255281A (en) * | 2022-07-19 | 2022-11-01 | 石家庄市宏森熔炼铸造有限公司 | Casting process of high-precision casting and casting |
| CN115255281B (en) * | 2022-07-19 | 2024-04-09 | 石家庄市宏森熔炼铸造有限公司 | Casting process of high-precision casting and casting |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |
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| RJ01 | Rejection of invention patent application after publication |