CN105081262A - Die-casting forming technology - Google Patents
Die-casting forming technology Download PDFInfo
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- CN105081262A CN105081262A CN201510524028.XA CN201510524028A CN105081262A CN 105081262 A CN105081262 A CN 105081262A CN 201510524028 A CN201510524028 A CN 201510524028A CN 105081262 A CN105081262 A CN 105081262A
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- molten metal
- die
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- die casting
- casting
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Abstract
The invention discloses a die-casting forming technology which comprises the following steps of die spotting, molten metal pouring, press shot of punches, molten metal solidification, die sinking and part taking. The die-casting forming technology has the beneficial effects that gas in a press shot chamber and a cavity is exhausted by additionally arranging an oxygen inflating procedure before a molten metal pouring procedure, namely industrial oxygen is inflated into the press shot chamber; the gas content in the press shot chamber is reduced; air holes formed in die-cast products are reduced or eliminated; and the hardness and the mechanical property of the die-cast products are effectively improved. Furthermore, the die-cast products can be processed in high temperature and have good heating tensile property.
Description
Technical field
The invention belongs to die-casting technique field, particularly a kind of compression molding process.
Background technology
Die casting, the i.e. abbreviation of " compression casting ", its essence is under High Pressure, to make liquid state or semi-liquid metal fill the die cavity of die casting with higher speed, and shaping and solidify and obtain the method for foundry goods under stress.Die casting machine divides hot press chamber die casting machine and the large class of cold pressing chamber die casting machine two.Cold pressing chamber die casting machine divides again horizontal, vertical two kinds of forms by its pressure chamber structure and arrangement.Hot press chamber die casting machine is the same with the clamping of cold pressing chamber die casting machine, and its difference is injection, casting mechanism difference.The pressure chamber of hot press chamber die casting machine and smelting furnace are closely linked to be an entirety, and the pressure chamber of cold pressing chamber die casting machine and smelting furnace are what to separate.Extrusion process is in casting field extensive use.
And in horizontal cold room press casting procedure, before molten metal pours into injection chamber, owing to all having air in die cavity and injection chamber, after molten metal pours into, injection punch head is in injection molten metal process, the fraction oxygen of the existence in air to react formation metal oxide with molten metal, all the other gases that can not react with molten metal are mixed into molten metal under the effect of the pressure, when after molten metal coagulation forming, remaining gas will form pore at cast-internal, make die casting finished product internal defect, hardness is low, bad mechanical property, and be not suitable for processing as welding under high-temperature and adding hot-stretch.
Summary of the invention
In order to realize object of the present invention, the present invention by the following technical solutions:
A kind of compression molding process, comprises the steps:
A. matched moulds: control mould conjunction and close formation die casting die cavity and running channel;
B. casting of molten metal: molten metal is poured into injection chamber;
C. drift injection: control injection punch head and extrude toward injection chamber, the molten metal in injection chamber is filled in die casting die cavity through running channel;
D. molten metal solidifies: after molten metal is filled in die casting die cavity completely, and injection punch head keeps certain pressure, until molten metal cooled and solidified;
E. die sinking pickup: after molten metal solidifies, control mould and open, injection punch head resets, and takes out die casting.
Preferably, also comprise oxygenation operation, use industrial oxygen cylinder that industrial oxygen is filled with injection chamber, described oxygenation operation, after matched moulds, is carried out before casting of molten metal.
Preferably, the air pressure of inflation is 0.5MPa-2Mpa.
Beneficial effect of the present invention: by having set up oxygenation operation before casting of molten metal operation, injection chamber is filled with by industrial oxygen, gas in injection chamber and die cavity is discharged, decrease the air content in injection chamber, thus reduce or eliminate the pore of die casting finished product inside, the hardness of effective raising die casting finished product and mechanical performance, and die casting finished product can at high temperature be processed, and has good heating tensile property.
Detailed description of the invention
Embodiment provided by the invention is described in further detail:
A kind of compression molding process, comprises the steps:
A. matched moulds: control mould conjunction and close formation die casting die cavity and running channel;
B. casting of molten metal: molten metal is poured into injection chamber;
C. drift injection: control injection punch head and extrude toward injection chamber, the molten metal in injection chamber is filled in die casting die cavity through running channel;
D. molten metal solidifies: after molten metal is filled in die casting die cavity completely, and injection punch head keeps certain pressure, until molten metal cooled and solidified;
E. die sinking pickup: after molten metal solidifies, control mould and open, injection punch head resets, and takes out die casting.
Preferably, also comprise oxygenation operation, use industrial oxygen cylinder that industrial oxygen is filled with injection chamber, described oxygenation operation, after matched moulds, is carried out before casting of molten metal.
Preferably, the air pressure of inflation is 0.5MPa-2Mpa.
The present invention by having set up oxygenation operation before casting of molten metal operation, injection chamber is filled with by industrial oxygen, gas in injection chamber and die cavity is discharged, decrease the air content in injection chamber, thus reduce or eliminate the pore of die casting finished product inside, the hardness of effective raising die casting finished product and mechanical performance, and die casting finished product can at high temperature be processed, and has good heating tensile property.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, description is regarded in an illustrative, rather than a restrictive.
Claims (3)
1. a compression molding process, is characterized in that, comprises the steps:
A. matched moulds: control mould conjunction and close formation die casting die cavity and running channel;
B. casting of molten metal: molten metal is poured into injection chamber;
C. drift injection: control injection punch head and extrude toward injection chamber, the molten metal in injection chamber is filled in die casting die cavity through running channel;
D. molten metal solidifies: after molten metal is filled in die casting die cavity completely, and injection punch head keeps certain pressure, until molten metal cooled and solidified;
E. die sinking pickup: after molten metal solidifies, control mould and open, injection punch head resets, and takes out die casting.
2. compression molding process according to claim 1, is characterized in that, also comprises oxygenation operation, and use industrial oxygen cylinder that industrial oxygen is filled with injection chamber, described oxygenation operation, after matched moulds, is carried out before casting of molten metal.
3. compression molding process according to claim 2, is characterized in that, the air pressure of inflation is 0.5MPa-2Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524028.XA CN105081262A (en) | 2015-08-25 | 2015-08-25 | Die-casting forming technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524028.XA CN105081262A (en) | 2015-08-25 | 2015-08-25 | Die-casting forming technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105081262A true CN105081262A (en) | 2015-11-25 |
Family
ID=54563108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510524028.XA Pending CN105081262A (en) | 2015-08-25 | 2015-08-25 | Die-casting forming technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081262A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0778099A2 (en) * | 1995-12-07 | 1997-06-11 | Toyota Jidosha Kabushiki Kaisha | Die casting process and die casting apparatus |
| US20050092457A1 (en) * | 2003-11-04 | 2005-05-05 | Jung Chul Park | Device for cooling die casting metallic pattern |
| CN202527683U (en) * | 2012-02-17 | 2012-11-14 | 美诺精密压铸(上海)有限公司 | Gas delivery device for oxygenated die casting and oxygenated die casting system comprising same |
| CN103586437A (en) * | 2013-11-26 | 2014-02-19 | 美诺精密压铸(上海)有限公司 | Pressing casting die and pressing casting system comprising the same |
| CN104550826A (en) * | 2015-01-07 | 2015-04-29 | 陈贵有 | Die-casting technique of horizontal cold chamber die casting machine |
-
2015
- 2015-08-25 CN CN201510524028.XA patent/CN105081262A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0778099A2 (en) * | 1995-12-07 | 1997-06-11 | Toyota Jidosha Kabushiki Kaisha | Die casting process and die casting apparatus |
| US20050092457A1 (en) * | 2003-11-04 | 2005-05-05 | Jung Chul Park | Device for cooling die casting metallic pattern |
| CN202527683U (en) * | 2012-02-17 | 2012-11-14 | 美诺精密压铸(上海)有限公司 | Gas delivery device for oxygenated die casting and oxygenated die casting system comprising same |
| CN103586437A (en) * | 2013-11-26 | 2014-02-19 | 美诺精密压铸(上海)有限公司 | Pressing casting die and pressing casting system comprising the same |
| CN104550826A (en) * | 2015-01-07 | 2015-04-29 | 陈贵有 | Die-casting technique of horizontal cold chamber die casting machine |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |