CN107790632A - Car panel die casting method - Google Patents
Car panel die casting method Download PDFInfo
- Publication number
- CN107790632A CN107790632A CN201711033099.5A CN201711033099A CN107790632A CN 107790632 A CN107790632 A CN 107790632A CN 201711033099 A CN201711033099 A CN 201711033099A CN 107790632 A CN107790632 A CN 107790632A
- Authority
- CN
- China
- Prior art keywords
- molding sand
- casting
- car panel
- iron
- panel die
- 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
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Classifications
-
- 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
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of car panel die casting method of the present invention, comprises the following steps：（1）Processing model；（2）Model estimates die insert weight, swabbing after weighing, sandbox is made in preparation；（3）Using 40 60 mesh molding sand, ramming is consolidated, and stomata is pricked on sand mold；（4）Top box is made using molding sand, treats that molding sand is sufficiently hardened；（5）The pig iron, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, vanadium iron, ferrosilicon are added into the fusing of 200 kg induction furnaces successively, skimmed, fine aluminium deoxidation, tapping is subcontracted, and is cooled down after cast and is produced near-net forming casting；（6）Casting complete, after cooling shake out cleaning.The present invention is by selecting cast pattern, molding sand, coating, molten metal to optimize casting process scheme, and final production goes out novel casting car panel die casting into graded tasks.
Description
Technical field
The present invention relates to auto parts and components manufacture field, and in particular to a kind of car panel die casting method.
Background technology
The research and development and production of car panel die are one of core technologies of Automobile Enterprises exploitation new model.At present, vapour
The High-strength plate of car coverings is mainly shaped by forging mold.Blank material in process of production be present in traditional forging mold
The high processing charges of price is high, production process is complicated, the manufacturing cycle is long, combination installation accuracy is low, cutting edge serious wear, REPAIR WELDING
Property not strong, short life the shortcomings of, especially when production is used to process the mould of large complicated forming face, consumption of materials is big, raw
Production is limited
System.Cavityless casting mould have near-net forming is good, production cost is low, machining period is short, high-wearing feature, fatigue resistance,
The features such as resistance to crack extension ability is strong.In the production of car panel die, wrought alloy mould is substituted with casting alloy mould
It is the development trend of domestic and international automobile die.Some automobile large-scale covering casting moulds are oversized, and process of setting is more multiple
Miscellaneous, technique adjustment is difficult, and R＆D cycle length, technical difficulty is very big, and its Rapid Manufacturing Technology is always the large-scale vapour of lot of domestic and foreign
Car group company develops and the emphasis of exploitation.Medium-and-large-sized cladding member mold and its Rapid Manufacturing Technology are researched and developed, solving restriction, it grinds
The key limiting element for sending out speed is that economic benefit and social benefit very significantly work, significant.
The content of the invention
The technical problems to be solved by the invention are：A kind of optimization of process schemes is provided, the casting mould of production it is wear-resisting
Property be better than identical chemical composition forging mold car panel die casting method.
In order to solve the above technical problems, a kind of car panel die casting method of the present invention, comprises the following steps：
（1）The polystyrene foam model of profile and size needed for CNC milling machine processing；
（2）Die insert weight, swabbing are estimated after polystyrene foam model is weighed, sandbox is made in preparation；
（3）Using 40-60 mesh molding sand, ramming is consolidated, and stomata, CO are pricked on sand mold2Gas, which blows 8min, is sufficiently hardened molding sand；
（4）Top box is made using molding sand, stomata is pricked on the molding sand tamped, then blows CO2Gas 8min, treat that molding sand is fully hard
Change；
（5）The pig iron, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, vanadium iron, ferrosilicon are added into 200 kg induction furnaces fusing 55min successively, with poly-
The poly- slag of slag agent is simultaneously skimmed；Fine aluminium deoxidation is finally used, tapping is subcontracted, and pouring temperature is controlled at 1600 DEG C；According to insert and dead head
Weight, some inserts of being cast per stove, pours into molten metal and is full of the original space of model, cool down and produce near-net forming casting；
（6）Casting complete, after cooling shake out cleaning, the mould that near-net forming is obtained by cutting off rising head after blasting treatment are inlayed
Block.
Preferably, when the casting dimension is larger, increases sandbox, increase rising head.
Technical scheme has following beneficial effect：
1st, technique is simple, easy to operate；
2nd, near-net forming is good；
3rd, production cost is low；
4th, has high-wearing feature, fatigue resistance, resistance to crack extension ability are strong.
Embodiment
The invention will be further described below.
A kind of car panel die casting method of the present invention, comprises the following steps：
（1）The polystyrene foam model of profile and size needed for CNC milling machine processing；
（2）Die insert weight, swabbing are estimated after polystyrene foam model is weighed, sandbox is made in preparation；
（3）Using 40-60 mesh molding sand, ramming is consolidated, and stomata, CO are pricked on sand mold2Gas, which blows 8min, is sufficiently hardened molding sand；
（4）Top box is made using molding sand, stomata is pricked on the molding sand tamped, then blows CO2Gas 8min, treat that molding sand is fully hard
Change；
（5）The pig iron, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, vanadium iron, ferrosilicon are added into 200 kg induction furnaces fusing 55min successively, with poly-
The poly- slag of slag agent is simultaneously skimmed；Fine aluminium deoxidation is finally used, tapping is subcontracted, and pouring temperature is controlled at 1600 DEG C；According to insert and dead head
Weight, some inserts of being cast per stove, pours into molten metal and is full of the original space of model, cool down and produce near-net forming casting；
（6）Casting complete, after cooling shake out cleaning, the mould that near-net forming is obtained by cutting off rising head after blasting treatment are inlayed
Block.
When the casting dimension is larger, increases sandbox, increase rising head.
The present invention is using the polystyrene foam completely the same with casting structure as full mold apperance.Apperance size is added
Shrinkage factor, the bonding coating of dip-coating fire resisting, moulding in water-glass sand is embedded to after drying；High-temperature liquid metal is poured into casting mold, is steeped
Foam apperance is heated decomposition gasification so as to be substituted by molten metal, forms cast article.
The wear rate of casting mould and forging mold all increases with the increase of friction velocity, and the change of forging mold
Substantially.Friction velocity is faster, and the wear rate difference of the two is bigger.Both average friction coefficients are more or less the same, changing rule
Reach unanimity, with the increase of speed, average friction coefficient is gradually reduced.From the real-time coefficient of friction of both whole wear processes
Change as can be seen that when friction velocity is 0.75 m/s lower-speed state, the coefficient of friction of casting die steel occurs violent
Fluctuation, with the increase of friction velocity, coefficient of friction is gradually steady, and fluctuation is smaller, and the coefficient of friction of forging mold is whole
Process is all relatively more steady, has fuctuation within a narrow range in high speed.Under same test conditions, pass through casting mould and the mill of forging mold
Damage contrast test show that the wear rate of casting mould is only the 1/5~1/2 of forging mold wear rate, and wearability is apparently higher than rear
Person.
The present invention optimizes casting process scheme by selecting cast pattern, molding sand, coating, molten metal into graded tasks, and
Final production goes out novel casting car panel die casting.
Claims (2)
1. a kind of car panel die casting method, comprises the following steps：
（1）The polystyrene foam model of profile and size needed for CNC milling machine processing；
（2）Die insert weight, swabbing are estimated after polystyrene foam model is weighed, sandbox is made in preparation；
（3）Using 40-60 mesh molding sand, ramming is consolidated, and stomata, CO are pricked on sand mold2Gas, which blows 8min, is sufficiently hardened molding sand；
（4）Top box is made using molding sand, stomata is pricked on the molding sand tamped, then blows CO2Gas 8min, treat that molding sand is sufficiently hardened；
（5）The pig iron, steel scrap, ferrochrome, ferromanganese, molybdenum-iron, vanadium iron, ferrosilicon are added into 200 kg induction furnaces fusing 55min successively, with poly-
The poly- slag of slag agent is simultaneously skimmed；Fine aluminium deoxidation is finally used, tapping is subcontracted, and pouring temperature is controlled at 1600 DEG C；According to insert and dead head
Weight, some inserts of being cast per stove, pours into molten metal and is full of the original space of model, cool down and produce near-net forming casting；
（6）Casting complete, after cooling shake out cleaning, the mould that near-net forming is obtained by cutting off rising head after blasting treatment are inlayed
Block.
2. car panel die casting method as claimed in claim 1, it is characterised in that：When the casting dimension is larger,
Increase sandbox, increase rising head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033099.5A CN107790632A (en) | 2017-10-30 | 2017-10-30 | Car panel die casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033099.5A CN107790632A (en) | 2017-10-30 | 2017-10-30 | Car panel die casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107790632A true CN107790632A (en) | 2018-03-13 |
Family
ID=61547636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711033099.5A Pending CN107790632A (en) | 2017-10-30 | 2017-10-30 | Car panel die casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107790632A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175245A (en) * | 2018-10-25 | 2019-01-11 | 芜湖泓鹄材料技术有限公司 | The casting technique of Auto panel dies casting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312501A (en) * | 2015-11-02 | 2016-02-10 | 广西博白县三田机械制造有限公司 | Die casting method |
| CN105964917A (en) * | 2016-06-24 | 2016-09-28 | 池州埃美柯水表铸造有限公司 | Full mold casting process |
| CN106424563A (en) * | 2016-11-18 | 2017-02-22 | 绥阳县海红铸造有限责任公司 | Lost-form casting method |
-
2017
- 2017-10-30 CN CN201711033099.5A patent/CN107790632A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312501A (en) * | 2015-11-02 | 2016-02-10 | 广西博白县三田机械制造有限公司 | Die casting method |
| CN105964917A (en) * | 2016-06-24 | 2016-09-28 | 池州埃美柯水表铸造有限公司 | Full mold casting process |
| CN106424563A (en) * | 2016-11-18 | 2017-02-22 | 绥阳县海红铸造有限责任公司 | Lost-form casting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175245A (en) * | 2018-10-25 | 2019-01-11 | 芜湖泓鹄材料技术有限公司 | The casting technique of Auto panel dies casting |
| CN109175245B (en) * | 2018-10-25 | 2020-11-17 | 芜湖泓鹄材料技术有限公司 | Casting process of automobile body mould casting |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180313 |