CN87101732A - Technology of making plastic cavity-mold die by forging in liquid state - Google Patents
Technology of making plastic cavity-mold die by forging in liquid state Download PDFInfo
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- CN87101732A CN87101732A CN 87101732 CN87101732A CN87101732A CN 87101732 A CN87101732 A CN 87101732A CN 87101732 CN87101732 CN 87101732 CN 87101732 A CN87101732 A CN 87101732A CN 87101732 A CN87101732 A CN 87101732A
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- die
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- plastic cavity
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Abstract
Technology of making plastic cavity-mold die by forging in liquid state belongs to the process for machining and manufacturing of plastic cavity die.The present invention adopts the method for liquid forging to make plastic cavity die.With working of plastics size shape processing graphite punch to be produced, design liquid-state forging die then earlier, the mobile under pressure crystallization and freezing of pouring liquid alloy, liquid alloy is shaped to plastics concave die cavity mould.The present invention has overcome the shortcoming that existing making plastic cavity-mold die process for machining and manufacturing exists, and has advantages such as method is simple, with low cost, manufacturing cycle weak point, good mechanical property.
Description
The invention belongs to the plastic cavity die process for machining and manufacturing.
Present existing making plastic cavity-mold die process for machining and manufacturing mainly adopts the method for casting, machining, electric machining, extrusion molding.As the method that adopts casting is to make melted alloy behind the sandbox, moulding by casting earlier.There are shortcomings such as the size of swaging die is difficult for assurance, poor surface smoothness, mechanical strength is low, the life-span is short in this method.The cold-stamped method is earlier to make punch, handle the alloy punch with heat treatment method then with alloy, on the forcing press more than 5000 tons lentamente to the processing parts moulding of exerting pressure.Adopt this method, capacity of equipment restriction cost height is grown, is subjected to the process-cycle.
The objective of the invention is to overcome the shortcoming that at present existing making plastic cavity-mold die process for machining and manufacturing exists, propose a kind of new technology of making plastic cavity-mold die by forging in liquid state.
To the effect that of the present invention, method with liquid forging is made plastic cavity die, main technique is, earlier by working of plastics size to be produced and shape processing graphite punch, manufacture and design liquid-state forging die then, melted alloy is poured into a mould the alloy after the fusing in the liquid-state forging die of preheating, the mobile under pressure crystallization and freezing of the liquid alloy that pressurizes simultaneously is shaped to plastics concave die cavity mould.
The present invention is owing to adopted new process, and the manufacture method of existing plastic cavity die relatively has, and process is simple, with low cost, manufacturing cycle weak point, mold cavity surface smoothness height, good mechanical property, yield rate advantages of higher.
Accompanying drawing is a process chart of the present invention:
1 design processing graphite punch, 2 manufactures and designs that liquid-state forging die, 3 is got the raw materials ready, 4-1 melted alloy, 4-2 install adjust that liquid-state forging die, 5-1 stir that alloy, 5-2 mold lubrication, 6 quantitatively pour into a moulds, 7 pressurizations, 8 pressurizes, 9 releases, 10 take out products, 11 and repair, 12 check.
Realize that optimised process of the present invention is, at first according to working of plastics size to be produced and shaped design processing graphite punch (1), manufacture and design liquid-state forging die (2), the monolateral gap of liquid-state forging die less than 0.15mm then, graphite punch molding gradient is 3 °, and liquid-state forging die die cavity fineness is
7-
8, (3) amount of getting the raw materials ready of getting the raw materials ready adds 5% scaling loss amount according to the making plastic cavity-mold die net weight.Melted alloy (4-1) after getting the raw materials ready, alloy is kirsite ZnAL
4, ZnAL
27, aluminium alloy LY
12, LD
2, fusion temperature is higher than 20 ℃-80 ℃ of the liquidus temperatures of alloy, melted alloy is installed simultaneously and is adjusted liquid-state forging die (4-2), liquid-state forging die is installed adjusting play and preheating on press, the preheat temperature of liquid-state forging die is 200 ℃-300 ℃.Stir alloy (5-1) after the melted alloy, and slag hitting, carry out mold lubrication (5-2) simultaneously, adopt graphite powder system to do lubricated and the demoulding, graphitization lubricant on the liquid-state forging die plays and lubricates and demoulding effect.After quantitatively pour into a mould (6) pouring temperature, kirsite ZnAL
4430 ℃-450 ℃, ZnAL
27560 ℃-580 ℃, aluminium alloy LY
12680 ℃-700 ℃, LD
2780 ℃-800 ℃.Smallclothes, thin-wall part pouring temperature capping keep alloy liquid continuous during cast, can not stop.Quantitatively pressurize (7) after the cast, specific pressure is decided on alloy species, part shape size, pressuring method, generally gets 1.5-5kg/mm
2Carry out pressurize (8) after exerting pressure, the pressure of pressurize remains to till metal in the die cavity all solidifies always, and the dwell time decides on situations such as pouring temperature, mold temperature, workpiece sizes, is generally 5-60 second.Can carry out release (9) after the pressurize one by one, take out product (10), repair (11), check operations such as (12), finish the whole technologies of making plastic cavity-mold die by forging in liquid state.
Claims (4)
1, a kind of process for machining and manufacturing of plastic cavity die, characteristics of the present invention are to make plastic cavity die with the method for liquid forging, main technique is, earlier by working of plastics size to be produced and shape processing graphite punch, manufacture and design liquid-state forging die, melted alloy then, in the liquid-state forging die of preheating the pouring liquid alloy, the liquid alloy crystallization and freezing that flows under pressure is shaped to the technology of the making plastic cavity-mold die by forging in liquid state of plastics concave die cavity.
2, according to the described technology of making plastic cavity-mold die by forging in liquid state of claim 1, its characteristics are that described melted alloy is ZnAL
4, ZnAL
27, LY
12, LD
2, fusion temperature is higher than 20 ℃-80 ℃ of the liquidus temperatures of alloy.
3, according to the described technology of making plastic cavity-mold die by forging in liquid state of claim 1, its characteristics are that the preheat temperature of liquid-state forging die is between 200 ℃-300 ℃, and adopt graphite powder system to do lubricated and the demoulding.
4, according to the described technology of making plastic cavity-mold die by forging in liquid state of claim 1, its characteristics are that flow the under pressure pressure of plastics concave die cavity of crystallization and freezing moulding of described liquid alloy is 1.5kg/mm
2, the dwell time is 5-60 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101732 CN87101732A (en) | 1987-03-03 | 1987-03-03 | Technology of making plastic cavity-mold die by forging in liquid state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101732 CN87101732A (en) | 1987-03-03 | 1987-03-03 | Technology of making plastic cavity-mold die by forging in liquid state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87101732A true CN87101732A (en) | 1987-09-23 |
Family
ID=4813606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101732 Pending CN87101732A (en) | 1987-03-03 | 1987-03-03 | Technology of making plastic cavity-mold die by forging in liquid state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87101732A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093447C (en) * | 2000-09-27 | 2002-10-30 | 张有明 | Processing art and mould for nonmetal type liquid forging or extruding casting formation |
| CN104605746A (en) * | 2015-01-04 | 2015-05-13 | 河南科技大学 | Composite pot, manufacturing method and mold |
-
1987
- 1987-03-03 CN CN 87101732 patent/CN87101732A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093447C (en) * | 2000-09-27 | 2002-10-30 | 张有明 | Processing art and mould for nonmetal type liquid forging or extruding casting formation |
| CN104605746A (en) * | 2015-01-04 | 2015-05-13 | 河南科技大学 | Composite pot, manufacturing method and mold |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |