CN1261259C - Indirect extrusion casting process - Google Patents
Indirect extrusion casting process Download PDFInfo
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- CN1261259C CN1261259C CN 200310110903 CN200310110903A CN1261259C CN 1261259 C CN1261259 C CN 1261259C CN 200310110903 CN200310110903 CN 200310110903 CN 200310110903 A CN200310110903 A CN 200310110903A CN 1261259 C CN1261259 C CN 1261259C
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Abstract
The present invention relates to an indirect extrusion casting method used for producing non-ferrous alloy casting pieces. The implementation method comprises the steps that an alloy melting body obtains low pressure mould filling treatment by a pouring pipeline. After mould filling, the alloy melting body is extruded by an extruding head, and thus, the alloy melting body is solidified and crystallized under pressure. As a result, non-ferrous alloy extrusion casting pieces are obtained in a yield rate of high technology.
Description
Technical field:
The present invention relates to a kind of indirect extrusion casting production method of non-ferrous alloy casting.
Background technology:
It is to use three two die sinking tools and manually to be cast for feature that existing extrusion casting method is produced non-ferrous alloy casting, its concrete processing step was divided into for five steps, that is: 1. preheating, open upper and lower land area successively and carry out die cavity cleaning and coat, 2. manually alloy melt is poured into extrusion chamber, 3. matched moulds extrusion casint, 4. open counterdie and pull off, eject clout, 5. close counterdie, open patrix and eject foundry goods.Produce non-ferrous alloy casting with existing extrusion casting method following shortcoming is arranged: 1. owing to adopted three two die sinkings, need the folding mould six times in the process cycles, finish and coat and take out the foundry goods operation, the opening and closing mould causes complex technical process, the time is long, efficient is low, hydraulic system energy consumption height, life-span are low often; 2. need from crucible, to get melt and pour into extrusion chamber, so alloy melt cast difficulty is big, the easy oxidation of alloy melt with pony ladle; 3. must be after cast finishes could carry out extrusion casint by mould assembly, therefore to fill the process of type long from being poured into pressurization, and the melt temperature drop is big; 4. after extrusion casint is finished, in extrusion chamber, leave a certain thickness stub bar, cause the technology recovery rate low; 5. fill the quality problems that the melt temperature drop causes before the type for preventing to push, must improve the melt cast temperature, so melting energy consumption height, the alloying component scaling loss is big, the air-breathing oxidation tendency of melt is big.
Summary of the invention:
The purpose of the method for the present invention is that overcomes the above-mentioned defective of existing extrusion casting method, provides a kind of high efficiency, technical process to simplify, pressure fills type, the indirect extrusion casting production method of technology recovery rate height, non-ferrous alloy casting that energy consumption is low.
For achieving the above object, technical scheme of the present invention is: fixedly counterdie 3, alloy melt 7 enters die cavity by cast pipeline 4 and extrusion chamber 9 under the effect of piston casting device 5, in the cavity filling process or after filling type and finishing, extrusion head 10 is up finishes that type is filled in extruding and pressurize is solidified, die sinking behind the casting solidification, extrusion head 10 up stub bar and the foundry goods 11 of ejecting.
In the casting process, cast pipeline 4 is heated insulation, and the alloy melt in it does not solidify in whole process; Piston casting device 5 pouring pressures are low, and cast pipeline 4 does not bear high pressure in whole cavity filling process; In the extrusion casint process, the effective volume of extrusion chamber 9 can only guarantee to finish the filling of casting solidification feeding and part casting mold, does not have casting mold is carried out the ability that type is filled in independent cast.
The inventive method is compared with existing extrusion casting method has following effect:
1, in whole extrusion casint process, counterdie 3 is fixing, mould in a process cycles folding once, easy and simple to handle, technological process is short, production efficiency height, and do not need artificial cast is beneficial to automated production;
2, the cast cavity filling process is finished by relatively independent piston low-pressure casting device 5, is beneficial to the independent regulation and control of cast parameter;
3, cast pipeline 4 is heated insulation, and the alloy melt in it does not solidify, and flows back to alloy molten bath 6 after filling type, and extrusion chamber 9 does not possess the pouring functions of watering substantially, and diameter is little and lack, thereby casting process recovery rate height;
4, cast pipeline 4 is hedged off from the outer world alloy melt, for the protection against oxidation of alloy melt is provided convenience;
5, the cast of this method, fill type, compression solidification order and finish continuously, thereby reduced the melt cast temperature, solved the big problem of alloy melt scaling loss under the high temperature, reduced the melting energy consumption.
Description of drawings:
Accompanying drawing is the inventive method operation principle schematic diagram:
Wherein: the 1-patrix; The 2-die side is loosed core; The 3-counterdie; 4-pours into a mould pipeline; 5-piston casting device; 6-alloy molten bath; The 7-alloy melt; 8-divides flow cone; The 9-extrusion chamber; The 10-extrusion head; The 11-foundry goods.
The specific embodiment:
Be further described below in conjunction with drawings and Examples:
Embodiment is an example with the indirect extrusion casting of magnesium alloy hub, and its technical process is:
1, low pressure is filled type, extrusion solidification: the magnesium alloy fused mass 7 in the alloy molten bath 6 is poured into a mould by cast pipeline 4 under the effect of piston casting device 5 and is filled type, extrusion head 10 up sealings cast pipelines 4 and beginning when filling type and being about to finish to the pressurization of the magnesium alloy fused mass in casting mold feeding, piston casting device 5 up backhauls simultaneously, magnesium alloy fused mass in the cast pipeline 4 flows back in the alloy molten bath 6, after casting mold is full of, the pressure of extrusion head 10 is elevated to more than the 1.0MPa rapidly, and keep this pressure, solidify fully until foundry goods 11;
2, die sinking pickup: casting solidification also stays mould die sinking after a period of time, and extrusion head 10 is up in the time of die sinking, ejects stub bar and foundry goods 11, and extrusion head 10 backhauls come downwards to the station that keeps 4 sealings of cast pipeline then;
3, level mould, coat, matched moulds, the minimum station of extrusion head 10 descending backhauls when pouring into a mould then, Extrution casting technique enters next circulation.
Adopt the inventive method to produce magnesium alloy hub, can solve effectively in the smelting and pouring magnesium alloy process that the protection difficulty is big, problem such as low, the complex technical process of melting scaling loss technology recovery rate big, foundry goods under the high temperature.
Claims (4)
1. method for indirect extrusion casting, implementation method is: the preheating casting mold, swabbing → matched moulds → low pressure is filled type → extrusion solidification → die sinking → go out part, it is characterized in that: during extrusion casint, alloy melt (7) flows into die cavity by cast pipeline (4) and extrusion chamber (9) under the effect of piston casting device (5), in the cavity filling process or after filling type and finishing, extrusion head (10) is up to be finished extruding and fills type and compression solidification, the technical characterictic of this method is: the effective volume of extrusion chamber (9) can only guarantee to finish the filling of casting solidification feeding and part casting mold, does not possess casting mold is carried out the ability that type is filled in independent cast.
2. method for indirect extrusion casting according to claim 1, it is characterized in that: cast pipeline (4) is heated insulation, alloy melt in the cast pipeline (4) is not solidified in whole casting process, and cast pipeline (4) does not bear high pressure in whole cavity filling process.
3. method for indirect extrusion casting according to claim 1 is characterized in that: cast is filled type and is mainly finished by piston casting device (5), and high-pressure extrusion pressure is provided by extrusion head (10).
4. method for indirect extrusion casting according to claim 1 is characterized in that: when filling type and being near completion, extrusion head (10) is up, closes cast pipeline (4), and the alloy melt (8) in the cast pipeline (4) is back in the alloy molten bath (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110903 CN1261259C (en) | 2003-11-07 | 2003-11-07 | Indirect extrusion casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110903 CN1261259C (en) | 2003-11-07 | 2003-11-07 | Indirect extrusion casting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1541788A CN1541788A (en) | 2004-11-03 |
| CN1261259C true CN1261259C (en) | 2006-06-28 |
Family
ID=34335806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310110903 Expired - Fee Related CN1261259C (en) | 2003-11-07 | 2003-11-07 | Indirect extrusion casting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261259C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453810C (en) * | 2006-03-17 | 2009-01-21 | 庄海君 | Wheel cylinder piston manufacturing method and die therefor |
| CN101618450B (en) * | 2009-07-21 | 2011-04-06 | 华南理工大学 | Method for indirect extrusion casting by utilizing filling of electromagnetic force and device thereof |
| CN101927329B (en) * | 2010-09-06 | 2012-05-30 | 重庆硕龙科技有限公司 | Vacuum high-pressure casting method |
| CN104308120B (en) * | 2014-11-18 | 2017-01-25 | 吉林金城铸锻有限责任公司 | Method for manufacturing automobile control arm body blank |
| CN104959573B (en) * | 2015-07-07 | 2017-03-01 | 清华大学 | A kind of integrated low-voltage fills casting device and the method for type and extrusion solidification |
| CN106623839B (en) * | 2015-11-03 | 2020-01-14 | 广东科达洁能股份有限公司 | Casting forming machine |
| CN106735079A (en) * | 2016-12-26 | 2017-05-31 | 安庆迪力机械铸造有限公司 | A kind of forklift hub extrusion casint device |
-
2003
- 2003-11-07 CN CN 200310110903 patent/CN1261259C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1541788A (en) | 2004-11-03 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20060628 Termination date: 20181107 |