CN105817588A - Production process of thin-wall cast iron heating radiator - Google Patents
Production process of thin-wall cast iron heating radiator Download PDFInfo
- Publication number
- CN105817588A CN105817588A CN201610249748.4A CN201610249748A CN105817588A CN 105817588 A CN105817588 A CN 105817588A CN 201610249748 A CN201610249748 A CN 201610249748A CN 105817588 A CN105817588 A CN 105817588A
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- core
- sand
- radiator
- baking
- blank
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- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
- B22C9/26—Moulds for peculiarly-shaped castings for hollow articles for ribbed tubes; for radiators
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to a production process of a thin-wall cast iron heating radiator, comprising the following steps: 1, preparation of a casting material; 2, smelting; 3, preparation of core sand; 4, production of a sand core; 5, baking; 6, production of a blank; 7, sand removal; 8, pressure test; 9, machining; and 10, re-pressing. The production process has the following benefits: the process is reasonable, the original wall thickness, 3.5MM, is reduced to 2.8MM, and the resource occupancy volume of a single product can be saved under the condition of ensuring that heat dissipation capacity is unchanged, so that the metal heat intensity of like products can be improved by about 20%.
Description
Technical field
The present invention relates to heat sink technology field, especially a kind of thin wall iron radiator production technology.
Background technology
Radiator be a kind of heating be main radiator, be typically based on material and can be divided into cast iron central heating radiator, steel, steel aluminum, aluminum and Copper-Aluminum compound radiator etc..
Cast iron central heating radiator is better than other kind radiator due to himself material, the wall thickness determining this series products, could meet the requirement using the aspect such as pressure, production technology.Present stage is relatively big, with regard to the cast iron products average wall thickness on open market all at 3.5mm except the cast-iron radiator wall thickness of full length film, carving sheet and some external unique patterns.And the product wall thickness of other material is general all within 2mm, causing such product resource occupancy volume is more greatly that metal thermal intensity is relatively low, it is impossible to meet modern society and the industrial requirement the highest to cast iron central heating radiator production technology.
Therefore, existing technique needs to be improved and improves.
Summary of the invention
In place of the deficiencies in the prior art, it is an object of the invention to provide a kind of thin wall iron radiator production technology, this production technology is possible not only to be effectively improved the metal thermal intensity of product, improves the utilization rate of cast iron resource, additionally it is possible to energy-saving and cost-reducing to such provides a favorable security.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of thin wall iron radiator production technology, comprises the following steps:
One, founding materials is prepared: founding materials includes that ferrum, carbon, silicon, manganese, phosphorus, the mass percent of sulfur each component are respectively as follows: 93.43-94.5%, 3.2-3.4%, 1.6-2.0%, 0.7-0.9%, 0-0.15%, 0-0.12%, this proportioning can be effectively improved the mechanical property of founding materials, and by present HT150, existing cast iron has been brought up to more than HT200；
Two, melting: founding materials puts into melting in air stove, smelting time is 40 minutes, and obtaining temperature is 1420-1480 DEG C of foundry cast iron water, and this temperature is better than existing casting temperature 1360-1420 DEG C, it is ensured that product mold-filling capacity in the case of wall thickness reduces；
Three, core sand is prepared: silica sand and the resin of 70-140 mesh are mixed and stirred for uniformly according to 1:0.028；
Four, make core: the core sand prepared is injected in mould by core shooter, form the core used by radiator after core sand is cured, within this manufacture method effectively makes core offset tooth be down to 0.1mm by original 0.5mm；
Five, baking: toasting core, baking temperature is 150-200 DEG C, and baking time is 60 minutes；
Six, make blank: first by clay content less than or equal to 2%, the natural sand of 70-140 mesh, bentonite, coal dust is pressed with water: 72:14.4:7.2:6.4 carries out proportioning and makes molding sand, then by automatic moulding machine, molding sand is loaded sandbox compacting for upper and lower two moulds, place into the core after baking, moulding by casting after matched moulds compression, after 10-15 minute, outlet is radiator blank, this program circuit removes lower core and cast, remaining is all machine automatization operation, excellent equipment and alignment system instead of available man-power operating system, within the offset case making product is down to 0.1mm by original 0.3mm；
Seven, sand removal: touch temperature with the little steel hammer of 0.5Kg and be down to four mouths of a river of room temperature blank sheet, makes the core sand in sheet flow out the inner chamber of product, and inner chamber core sand residual volume must not be higher than 0.1Kg；
Eight, pressure testing: water filling after being sealed at four mouths of a river of radiator blank, after pressure reaches 2.0MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is certified products；
Nine, machining: the import and export of radiator are carried out milling mouth and tapping；
Ten, multiple pressure: water filling after being sealed at four mouths of a river of product after processing, after pressure reaches 1.5MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is final certified products, is thin wall iron radiator finished product.
Compared with the prior art, the invention has the beneficial effects as follows:
Present invention process is reasonable, original wall thickness 3.5MM can be down to 2.8MM, is ensureing to save the resources occupation amount of single products in the case of heat dissipation capacity holding is constant, is making the metal thermal intensity of this series products improve about 20%.
Accompanying drawing explanation
Accompanying drawing 1 is the technological process of production schematic diagram of the present invention.
Detailed description of the invention
1 provide embodiment the present invention is described in further detail below in conjunction with the accompanying drawings:
Embodiment 1:
A kind of thin wall iron radiator production technology, comprises the following steps:
1, founding materials is prepared: founding materials includes 140.925kg ferrum, 4.935kg carbon, 2.625kg silicon, 1.215kg manganese, 0.165kg phosphorus, 0.135kg sulfur；
2, melting: founding materials puts into melting in air stove, smelting time is 40 minutes, and obtaining temperature is 1440 DEG C of foundry cast iron water；
3, core sand is prepared: by the 10kg silica sand of 80 mesh and 0.28kg mixed with resin and stir；
4, core is made: the mould of core injected by molding sand by core shooter, forms core after molding sand is cured；
5, baking: toasting core, baking temperature is 178 DEG C, and baking time is 60 minutes；
6, blank is made: be first 1.6% by 3.456kg clay content, the natural sand of 80 mesh, 0.6912kg bentonite, 0.3456kg coal dust and 0.3072kg water carry out proportioning and make molding sand, it is then charged into being loaded with in the sandbox of mould compacting, place into the core after baking, matched moulds compress after moulding by casting again, after 12 minutes, outlet is radiator blank；
7, sand removal: touch temperature with the little steel hammer of 0.5Kg and be down to four mouths of a river of room temperature blank sheet, makes the core sand in sheet flow out the inner chamber of product, and inner chamber core sand residual volume must not be higher than 0.1Kg；
8, pressure testing: four mouths of a river of radiator blank being sealed inner chamber water filling, after pressure reaches 2.0MPa, touches with the little steel hammer of 0.5KG, one minute ne-leakage of static pressure is certified products；
9, machining: the import and export of radiator are carried out milling mouth and tapping；
10, multiple pressure: water filling after being sealed at four mouths of a river of product after processing, after pressure reaches 1.5MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is final certified products, is thin wall iron radiator finished product.
Embodiment 2:
A kind of thin wall iron radiator production technology, comprises the following steps:
1, founding materials is prepared: founding materials includes 206.954kg ferrum, 7.326kg carbon, 3.982kg silicon, 1.628kg manganese, 0.066kg phosphorus, 0.044kg sulfur；
2, melting: founding materials puts into melting in air stove, smelting time is 40 minutes, and obtaining temperature is 1470 DEG C of foundry cast iron water；
3, core sand is prepared: by the 15kg silica sand of 120 mesh and 0.42kg mixed with resin and stir；
4, core is made: the mould of core injected by molding sand by core shooter, forms core after core sand is cured；
5, baking: toasting core, baking temperature is 190 DEG C, and baking time is 60 minutes；
6, blank is made: be first 1.5% by 3.6kg clay content, the natural sand of 100 mesh, 0.72kg bentonite, 0.36kg coal dust and 0.32kg water carry out proportioning and make molding sand, it is then charged into being loaded with in the sandbox of mould compacting, place into the core after baking, matched moulds compress after moulding by casting again, after 12 minutes, outlet is radiator blank；
7, sand removal: touch temperature with the little steel hammer of 0.5Kg and be down to four mouths of a river of room temperature blank sheet, makes the core sand in sheet flow out the inner chamber of product, and inner chamber core sand residual volume must not be higher than 0.1Kg；
8, pressure testing: four mouths of a river of radiator blank being sealed inner chamber water filling, after pressure reaches 2.0MPa, touches with the little steel hammer of 0.5KG, one minute ne-leakage of static pressure is certified products；
9, machining: the import and export of radiator are carried out milling mouth and tapping；
10, multiple pressure: water filling after being sealed at four mouths of a river of product after processing, after pressure reaches 1.5MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is final certified products, is thin wall iron radiator finished product.
In sum, pass through the process step of the invention, achieve in the case of ensureing that yield rate does not reduces, production work to thin wall iron radiator, the average wall thickness making product is down to 2.8mm from original 3.5mm, effectively reduce the consumption on the energy of this series products, additionally it is possible to promote the metal thermal intensity of this series products all about 20%.
Above the present invention is described in detail; its object is to allow the personage being familiar with this art will appreciate that present disclosure and to be carried out; can not limit the scope of the invention with this; all equivalence changes made according to the spirit of the present invention or modification, all should contain within the scope of the present invention.
Claims (1)
1. a thin wall iron radiator production technology, it is characterised in that comprise the following steps:
One, founding materials is prepared: founding materials includes that ferrum, carbon, silicon, manganese, phosphorus, the mass percent of sulfur each component are respectively as follows: 93.43-94.5%, 3.2-3.4%, 1.6-2.0%, 0.7-0.9%, 0-0.15%, 0-0.12%；
Two, melting: founding materials puts into melting in air stove, smelting time is 40 minutes, and obtaining temperature is 1420-1480 DEG C of foundry cast iron water；
Three, core sand is prepared: silica sand and the resin of 70-140 mesh are mixed and stirred for uniformly according to 1:0.028；
Four, make core: the core sand prepared is injected in mould by core shooter, after core sand is cured, form the core used by radiator；
Five, baking: toasting core, baking temperature is 150-200 DEG C, and baking time is 60 minutes；
Six, blank is made: first by clay content less than or equal to 2%, the natural sand of 70-140 mesh, bentonite, coal dust are pressed with water: 72:14.4:7.2:6.4 carries out proportioning and makes molding sand, then by automatic moulding machine, molding sand is loaded sandbox compacting for upper and lower two moulds, place into the core after baking, moulding by casting after matched moulds compression, after 10-15 minute, outlet is radiator blank；
Seven, sand removal: touch temperature with the little steel hammer of 0.5Kg and be down to four mouths of a river of room temperature blank sheet, makes the core sand in sheet flow out the inner chamber of product, and inner chamber core sand residual volume must not be higher than 0.1Kg；
Eight, pressure testing: water filling after being sealed at four mouths of a river of radiator blank, after pressure reaches 2.0MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is certified products；
Nine, machining: the import and export of radiator are carried out milling mouth and tapping；
Ten, multiple pressure: water filling after being sealed at four mouths of a river of product after processing, after pressure reaches 1.5MPa, touches with the little steel hammer of 0.5KG, and one minute ne-leakage of static pressure is final certified products, is thin wall iron radiator finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249748.4A CN105817588A (en) | 2016-04-21 | 2016-04-21 | Production process of thin-wall cast iron heating radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249748.4A CN105817588A (en) | 2016-04-21 | 2016-04-21 | Production process of thin-wall cast iron heating radiator |
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| Publication Number | Publication Date |
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| CN105817588A true CN105817588A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610249748.4A Pending CN105817588A (en) | 2016-04-21 | 2016-04-21 | Production process of thin-wall cast iron heating radiator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865993A (en) * | 2017-12-02 | 2019-06-11 | 宜兴市乐华冶金辅助材料有限公司 | A kind of high-performance cooling fin preparation process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1124727A (en) * | 1966-07-14 | 1968-08-21 | Harzer Werke Blankenburg Veb | Apparatus for forming a system of mutually connected air-venting channels in sand cores |
| CN1079422A (en) * | 1992-05-26 | 1993-12-15 | 刘敏 | The fireproof die of cast radiator and casting technique thereof |
| CN1188694A (en) * | 1997-01-24 | 1998-07-29 | 周其京 | Coremaking technology for cast-iron radiator |
| CN1512571A (en) * | 2002-12-27 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe radiator and its producing method and apparatus |
| CN1519069A (en) * | 2003-09-01 | 2004-08-11 | 董立春 | Method for manufacturing cast-iron radiator without sand inside cavity |
| CN105436422A (en) * | 2015-12-28 | 2016-03-30 | 马占洪 | Heating radiator casting process |
-
2016
- 2016-04-21 CN CN201610249748.4A patent/CN105817588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1124727A (en) * | 1966-07-14 | 1968-08-21 | Harzer Werke Blankenburg Veb | Apparatus for forming a system of mutually connected air-venting channels in sand cores |
| CN1079422A (en) * | 1992-05-26 | 1993-12-15 | 刘敏 | The fireproof die of cast radiator and casting technique thereof |
| CN1188694A (en) * | 1997-01-24 | 1998-07-29 | 周其京 | Coremaking technology for cast-iron radiator |
| CN1512571A (en) * | 2002-12-27 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Heat pipe radiator and its producing method and apparatus |
| CN1519069A (en) * | 2003-09-01 | 2004-08-11 | 董立春 | Method for manufacturing cast-iron radiator without sand inside cavity |
| CN105436422A (en) * | 2015-12-28 | 2016-03-30 | 马占洪 | Heating radiator casting process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865993A (en) * | 2017-12-02 | 2019-06-11 | 宜兴市乐华冶金辅助材料有限公司 | A kind of high-performance cooling fin preparation process |
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Application publication date: 20160803 |