CN104959547A - Flange casting process - Google Patents

Flange casting process Download PDF

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Publication number
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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CN
China
Prior art keywords
flange
mould
pouring
sand
casting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510380298.8A
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Chinese (zh)
Inventor
杨龙兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Yanggong Machinery Manufacturing Co Ltd
Original Assignee
Wuxi Yanggong Machinery Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Yanggong Machinery Manufacturing Co Ltd filed Critical Wuxi Yanggong Machinery Manufacturing Co Ltd
Priority to CN201510380298.8A priority Critical patent/CN104959547A/en
Publication of CN104959547A publication Critical patent/CN104959547A/en
Pending legal-status Critical Current

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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

A kind of flange casting technique
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.
CN201510380298.8A 2015-07-02 2015-07-02 Flange casting process Pending CN104959547A (en)

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

Country Status (1)

Country Link
CN (1) CN104959547A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20151007

RJ01 Rejection of invention patent application after publication