CN107876706A - A kind of casting technique of valve body - Google Patents
A kind of casting technique of valve body Download PDFInfo
- Publication number
- CN107876706A CN107876706A CN201711079218.0A CN201711079218A CN107876706A CN 107876706 A CN107876706 A CN 107876706A CN 201711079218 A CN201711079218 A CN 201711079218A CN 107876706 A CN107876706 A CN 107876706A
- Authority
- CN
- China
- Prior art keywords
- parts
- valve body
- molding sand
- molten steel
- temperature
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Valve Housings (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of casting technique of valve body, including following steps：The first step, fusing；Second step, make mould；3rd step, cast；4th step, cooling；5th step, heat treatment.Beneficial effects of the present invention, casting technique of the invention, as primary raw material, improve the hardness of valve body in itself using steel, the Valve Block Mould obtained by molding sand, direct pouring is molded, and process is less, reduces cost of manufacture, it ensure that the uniformity of cast, stomata is reduced, steel utilization ratio is high, and obtained valve body surface is smooth, cracking breakout is low, and hardness is high.
Description
Technical field
The present invention relates to casting field, specially a kind of casting technique of valve body.
Background technology
The major function of valve is the break-make of control piper, is mainly used in natural gas, oil, chemical industry, environmental protection, city pipe
On the device such as the feed-lines such as road, burning line, the gentle storage of blowdown system.With the fast development of World Economics, cause pair
The chemical industry equipments such as natural gas, oil, the demand of facility are increasing.Have and cause the construction of valve body relatively special, thus
The casting difficulty of such casting is larger, has the requirement of high security to it, therefore will to the castability of valve body moulding in itself
Ask very strict.When being cast in the market to valve body, be very easy to occur slag inclusion, sand holes, shrinkage porosite, crackle, stomata and
The casting flaws such as shrinkage cavity, hardness is low, and requirement is extremely difficult in quality.
The content of the invention
In order to overcome above-mentioned technical problem existing for prior art, it is an object of the invention to provide the casting of the valve body
Technique steel utilization ratio height is made, surface is smooth, and cracking breakout is low, and hardness is high.
The casting technique steel utilization ratio of the valve body is high, and surface is smooth, and cracking breakout is low, and hardness is high.
To reach above-mentioned purpose, the technical scheme is that：A kind of casting technique of valve body, it is characterised in that；Including
Following steps：
（1）Fusing：Steel are placed in smelting furnace, the temperature in smelting furnace is heated to 1250-1350 DEG C, refining agent is added, obtains
Molten steel, carefully stirring, sulfur content is not more than 0.15% in molten steel, and phosphorus content is not more than 0.03%, phosphorus content 0.06-0.07%,
Silicon content 0.25-0.30%, manganese content 0.40-0.45%；
（2）Make mould：Valve Block Mould is made, the Valve Block Mould is made according to required size, Valve Block Mould is put
Enter in molding sand box, obtain molding sand；The molding sand is prepared from the following raw materials in parts by weight：100 parts of silica sand, waterglass 7-9 parts,
Water 11-15 parts, phenolic resin 2-5 parts, silicone oil 2-5 parts, bentonite 12-14 parts and aluminium triphosphate 3-5 parts；
（3）Cast：By step（1）In pouring molten steel to step（2）In molding sand in, pouring temperature be 1650-1850 DEG C,
The duration of pouring is 30-35s, after casting complete, is incubated 30-35min；
（4）Cooling：Normal temperature is cooled to, the valve body of shaping is taken out, surface is cleared up, valve body is obtained after polishing；
（5）Heat treatment：Valve body is heat-treated, hardening heat control is in 750-850 DEG C, temperature control in 620-650
℃。
A kind of casting technique of valve body provided by the invention, its advantage are, overcome the founder of existing valve body
The defects of skill, steel utilization ratio is high, and surface is smooth, and cracking breakout is low, and hardness is high, and the castability of valve body has been effectively ensured.
Embodiment
A kind of casting technique of valve body of the present invention is described in further detail with reference to embodiment.The signal of the present invention
Property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.
Embodiment one：A kind of casting technique of valve body of the present embodiment, including following steps：
（1）Fusing：Steel are placed in smelting furnace, the temperature in smelting furnace is heated to 1250 DEG C, refining agent is added, obtains molten steel,
Carefully stir, sulfur content is 0.1% in molten steel, phosphorus content 0.02%, phosphorus content 0.06%, silicon content 0.25%, manganese content
0.40% ；
（2）Make mould：Valve Block Mould is made, the Valve Block Mould is made according to required size, Valve Block Mould is put
Enter in molding sand box, obtain molding sand；The molding sand is prepared from the following raw materials in parts by weight：100 parts of silica sand, 8 parts of waterglass, water
3 parts of 15 parts, 2 parts of phenolic resin, 5 parts of silicone oil, 12 parts of bentonite and aluminium triphosphate；
（3）Cast：By step（1）In pouring molten steel to step（2）In molding sand in, pouring temperature is 1650 DEG C, during cast
Between be 35s, after casting complete, be incubated 35min；
（4）Cooling：Normal temperature is cooled to, the valve body of shaping is taken out, surface is cleared up, valve body is obtained after polishing；
（5）Heat treatment：Valve body is heat-treated, hardening heat control is in 750 DEG C, temperature control at 620 DEG C.
Embodiment two：A kind of casting technique of valve body of the present embodiment, including following steps：
（1）Fusing：Steel are placed in smelting furnace, the temperature in smelting furnace is heated to 1300 DEG C, refining agent is added, obtains molten steel,
Carefully stir, sulfur content is 0.15% in molten steel, phosphorus content 0.015%, phosphorus content 0.065%, silicon content 0.30%, containing manganese
Amount 0.45%；
（2）Make mould：Valve Block Mould is made, the Valve Block Mould is made according to required size, Valve Block Mould is put
Enter in molding sand box, obtain molding sand；The molding sand is prepared from the following raw materials in parts by weight：100 parts of silica sand, 7 parts of waterglass, water
4 parts of 11 parts, 4 parts of phenolic resin, 3 parts of silicone oil, 13 parts of bentonite and aluminium triphosphate；
（3）Cast：By step（1）In pouring molten steel to step（2）In molding sand in, pouring temperature is 1750 DEG C, during cast
Between be 33s, after casting complete, be incubated 33min；
（4）Cooling：Normal temperature is cooled to, the valve body of shaping is taken out, surface is cleared up, valve body is obtained after polishing；
（5）Heat treatment：Valve body is heat-treated, hardening heat control is in 800 DEG C, temperature control at 640 DEG C.
Embodiment three：A kind of casting technique of valve body of the present embodiment, including following steps：
（1）Fusing：Steel are placed in smelting furnace, the temperature in smelting furnace is heated to 1350 DEG C, refining agent is added, obtains molten steel,
Carefully stir, sulfur content is 0.13% in molten steel, phosphorus content 0.03%, phosphorus content 0.07%, silicon content 0.27%, manganese content
0.42% ；
（2）Make mould：Valve Block Mould is made, the Valve Block Mould is made according to required size, Valve Block Mould is put
Enter in molding sand box, obtain molding sand；The molding sand is prepared from the following raw materials in parts by weight：100 parts of silica sand, 9 parts of waterglass, water
5 parts of 13 parts, 5 parts of phenolic resin, 2 parts of silicone oil, 14 parts of bentonite and aluminium triphosphate；
（3）Cast：By step（1）In pouring molten steel to step（2）In molding sand in, pouring temperature is 1850 DEG C, during cast
Between be 30s, after casting complete, be incubated 30min；
（4）Cooling：Normal temperature is cooled to, the valve body of shaping is taken out, surface is cleared up, valve body is obtained after polishing；
（5）Heat treatment：Valve body is heat-treated, hardening heat control is in 850 DEG C, temperature control at 650 DEG C.
It is described above, only it is embodiments of the invention, not the present invention is imposed any restrictions, it is every according to the technology of the present invention
Any simple modification, change and the change of equivalent method that essence is made to above example, still fall within the technology of the present invention
In the protection domain of scheme.
Claims (1)
- A kind of 1. casting technique of valve body, it is characterised in that；Including following steps：（1）Fusing：Steel are placed in smelting furnace, the temperature in smelting furnace is heated to 1250-1350 DEG C, refining agent is added, obtains Molten steel, carefully stirring, sulfur content is not more than 0.15% in molten steel, and phosphorus content is not more than 0.03%, phosphorus content 0.06-0.07%, Silicon content 0.25-0.30%, manganese content 0.40-0.45%；（2）Make mould：Valve Block Mould is made, the Valve Block Mould is made according to required size, Valve Block Mould is put Enter in molding sand box, obtain molding sand；The molding sand is prepared from the following raw materials in parts by weight：100 parts of silica sand, waterglass 7-9 Part, water 11-15 parts, phenolic resin 2-5 parts, silicone oil 2-5 parts, bentonite 12-14 parts and aluminium triphosphate 3-5 parts；（3）Cast：By step（1）In pouring molten steel to step（2）In molding sand in, pouring temperature be 1650-1850 DEG C, The duration of pouring is 30-35s, after casting complete, is incubated 30-35min；（4）Cooling：Normal temperature is cooled to, the valve body of shaping is taken out, surface is cleared up, valve body is obtained after polishing；（5）Heat treatment：Valve body is heat-treated, hardening heat control is in 750-850 DEG C, temperature control in 620-650 ℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079218.0A CN107876706A (en) | 2017-11-06 | 2017-11-06 | A kind of casting technique of valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079218.0A CN107876706A (en) | 2017-11-06 | 2017-11-06 | A kind of casting technique of valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107876706A true CN107876706A (en) | 2018-04-06 |
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ID=61778913
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711079218.0A Pending CN107876706A (en) | 2017-11-06 | 2017-11-06 | A kind of casting technique of valve body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913982A (en) * | 2018-08-06 | 2018-11-30 | 苏州速腾电子科技有限公司 | A kind of production method of valve |
| WO2020024084A1 (en) * | 2018-07-28 | 2020-02-06 | 苏州速腾电子科技有限公司 | Copper alloy valve processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890477A (en) * | 2010-07-16 | 2010-11-24 | 吴江市液铸液压件铸造有限公司 | Casting production technology of valve body |
| CN104959521A (en) * | 2015-07-02 | 2015-10-07 | 无锡阳工机械制造有限公司 | Valve casing casting process |
| CN104959547A (en) * | 2015-07-02 | 2015-10-07 | 无锡阳工机械制造有限公司 | Flange casting process |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
-
2017
- 2017-11-06 CN CN201711079218.0A patent/CN107876706A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890477A (en) * | 2010-07-16 | 2010-11-24 | 吴江市液铸液压件铸造有限公司 | Casting production technology of valve body |
| CN104959521A (en) * | 2015-07-02 | 2015-10-07 | 无锡阳工机械制造有限公司 | Valve casing casting process |
| CN104959547A (en) * | 2015-07-02 | 2015-10-07 | 无锡阳工机械制造有限公司 | Flange casting process |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024084A1 (en) * | 2018-07-28 | 2020-02-06 | 苏州速腾电子科技有限公司 | Copper alloy valve processing technology |
| CN108913982A (en) * | 2018-08-06 | 2018-11-30 | 苏州速腾电子科技有限公司 | A kind of production method of valve |
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Application publication date: 20180406 |