CN1022768C - Multi-hole metal making method - Google Patents
Multi-hole metal making method Download PDFInfo
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- CN1022768C CN1022768C CN 91106901 CN91106901A CN1022768C CN 1022768 C CN1022768 C CN 1022768C CN 91106901 CN91106901 CN 91106901 CN 91106901 A CN91106901 A CN 91106901A CN 1022768 C CN1022768 C CN 1022768C
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- metal
- granular material
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- complex body
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Abstract
The present invention relates to a making method of a porous metallic body. A silicon-aluminium oxide is adopted as a material, the oxide and molten metal are cast into a complex, and then the material in the complex is removed by utilizing running water or auxiliary vibration so as to form the porous metallic body; the method has the characteristics of simple processing technology and low cost, and the formed pores have the characteristics of uniformity, roundness, mutual connection, adjustable size, etc., and can form parts with complex shapes; therefore, the method can certainly be considered to be an operative technology method for making porous metallic bodies.
Description
The present invention relates to a kind of method of making the vesicular metallic object.
JP64000236 provides a kind of method of making the vesicular metallic object.At first in porous plastics, inject slurry attitude pottery in this method, obtain porous ceramics through roasting again, utilize pressure to inject molten metal then, treat to remove pottery after its condensation and form three-dimensional netted vesicular metallic object.The shortcoming of this method is that complete processing is complicated, and is difficult to form the part of complicated shape.
Us Patent 3236706 also provides a kind of method of making the vesicular metallic object.This method is that the salt grain is placed in the cavity of desired shape, injects molten metal to form the complex body of metal and salt grain, adds the salt grain in the water-solubleization complex body then, obtains the vesicular metallic object that hole communicates.Hole with the formed metallic object of this method is many prismatics, thus the intensity of metallic object a little less than, and salt has corrodibility, it easily produces erosion damage to metallic object.
Purpose of the present invention just is to overcome above-mentioned weak point of the prior art, provides a kind of technology simple, can be manufacturing complex shapes and the vesicular metallic object manufacture method of metal parts that have even rounding phase via holes.
Purpose of the present invention reaches by following measures: selected material all is mAl for one or more molecular formula
2O
3, nSiO
2XH
2The high-melting-point powdery sieve and silica-sesquioxide mixture of O, add entry therein or contain the aqueous solution of water-soluble cohesive agent, adopt the method for rotation rolling or stirring aftershaping to be made into granular material, can on its material, apply one deck powdered graphite material as required, after the oven dry granular material consolidation is inserted in the casting mold that needs shape, under pressure or negative pressure state, inject molten metal, the complex body of condensed granular material and metal is placed a tank, adopt pressure flowing water or be aided with vibration to make defeated and dispersed the separating of granular material in the complex body to form the vesicular metallic object.
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1: at first with the Al of fusing point greater than 1250 ℃
2O
34SiO
24H
2O or Al
2O
32SiO
22H
2The powdery sieve and silica-sesquioxide of O or their both mixtures are packed in the rotary container, spray into spray water xi in the time of rotary container, because sieve and silica-sesquioxide is met glassware for drinking water stronger avidity is arranged,, pulverulent material continuous rolling in container forms granule materials thereby combining with spray water xi liquid, for the granular material intensity that makes formation better, can in water liquid, add a certain proportion of water-soluble binder, what promptly spray into is the vaporific aqueous solution that contains water-soluble binder, and the water-soluble binder that present embodiment uses is water glass.Experiment showed, that the ratio that accounts for the aqueous solution when sodium silicate binder is 3-30%, sodium silicate solution that sprays into and proportion of powdery materials are 1: 3～1: 10 o'clock, formed granular material performance the best.With the granular material screening, can be 1～2mm or 2～3mm by required its diameter, baking is 1 hour under 100～200 ℃ temperature.Material after the baking is further sieved, remove powdery substance, in the casting mold of the desired shape of packing into, vibration is also added material, closely fill material in casting mold, for preventing granular material in casting molten metal time come-up or leak outside, envelope is with a resistant to elevated temperatures screen cloth on the casting mold pouring gate.Before casting, casting mold that material is housed preheating half an hour to one hour under 50～400 ℃ of temperature also can directly can be cast.During casting, adopt 0.4～0.8N/mm
2Pressure or under negative pressure state, low-melting Al, Mg, Sn, Pb, Zn metal or their alloy are molded into casting mold, in the present embodiment about 720 ℃ ZL104 aluminium alloy solution is poured into casting mold.Treat after the condensation complex body of aluminium alloy and material is placed a tank.Because the fusing point of particulate Si aluminum oxide material is higher than the melt temperature of aluminium alloy, its shape remains unchanged, and it again can be defeated and dispersed voluntarily after meeting water, so under the effect of the flowing water in tank, granular material in the complex body can be separated gradually, also can make the flowing water in the tank add certain pressure or be aided with the mechanical vibration complex body to quicken the velocity of separation of granular material.Promptly get the vesicular aluminium alloy body that the even rounding of a hole communicates after material all separated.The adjusting of hole size and porosity can realize by the adjusting to the size of granular material.This embodiment can be used for making sound damper and metal gas burner.
Embodiment 2: this embodiment is used to make the metal acoustic panel.Selected material is Al
2O
32SiO
22H
2O powdery sieve and silica-sesquioxide, adopt at first that said rotary spraying technique is mixed and made into the granular material that diameter is 2-3mm with powdery sieve and silica-sesquioxide and spent pulping liquor among the embodiment 1, also can adopt paddling process that pulverulent material is made granular material: at first powdery sieve and silica-sesquioxide and spent pulping liquor to be mixed fully and stir by being slightly larger than among the embodiment 1 said proportionlity, the dried pasty material after stirring is pushed, shears, crumples, promptly obtains required granular material.On this granular material, apply one deck powdered graphite material, after the oven dry with the granular material close packing in metallic mould, lid is with the preheating 40 minutes under 350 ℃ of temperature of high temperature resistant aperture plate, then with 0.8N/mm
2Pressure about 740 ℃ ZL104 molten aluminium alloy is poured into casting mold, treat after the condensation that complex body with aluminium alloy and material places among the flowing water and is aided with defeated and dispersed the separating of material that vibration makes complex body, can obtain a tabular acoustic(al)absorbent at last, use for preventing noise droping noise.
Compared with prior art, the present invention has the following advantages:
1, technology of the present invention is simple, and so no corrosion contamination, and employed sieve and silica-sesquioxide material and water-soluble binder wide material sources are cheap for manufacturing cost.
2, the present invention can be used to make the metal parts of complicated shape, and the void shape of formed metallic object, size can be regulated by the control to granular material, and the even rounding of hole communicates.
Claims (7)
1, a kind of method of making the vesicular metallic object is at first cast a complex body with a material and metal, removes material in the complex body then to form the vesicular metallic object, and it is characterized in that: selected material all is mAl for one or more molecular formula
2O
3NSiO
2XH
2The powdery sieve and silica-sesquioxide mixture of O, add entry therein or contain the aqueous solution of water-soluble binder, adopt methods such as rotation rolling or stirring postforming to be made into granular material, after the oven dry granular material consolidation is inserted in the casting mold of desired shape, under pressure or negative pressure state, inject molten metal, the complex body of granular material after the condensation and metal is placed a tank, adopt pressure flowing water or be aided with vibration to make defeated and dispersed the separating of granular material in the complex body to form the vesicular metallic object.
2, according to the said method of claim 1, it is characterized in that: said granular material applies one deck powdered graphite material earlier before oven dry.
3, according to claim 1 or 2 said methods, it is characterized in that: said metal is low-melting Al, Mg, Sn, Pb, Zn metal and alloy thereof.
4, according to claim 1 or 2 said methods, it is characterized in that: the said aqueous solution that contains water-soluble binder is sodium silicate solution or spent pulping liquor.
5, according to the said method of claim 4, it is characterized in that: the ratio that water glass or spent pulping liquor binding agent account for the aqueous solution is 3～30%.
6, according to claim 1 or 2 said methods, it is characterized in that: the aqueous solution that contains water-soluble binder of adding and powdery sieve and silica-sesquioxide material's proportion are 1: 3～1: 10.
7, according to claim 1 or 2 said methods, it is characterized in that: the casting mold preheating under 50 °～400 ℃ temperature that before the casting metal liquation material will be housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106901 CN1022768C (en) | 1990-12-27 | 1990-12-27 | Multi-hole metal making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106901 CN1022768C (en) | 1990-12-27 | 1990-12-27 | Multi-hole metal making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062768A CN1062768A (en) | 1992-07-15 |
| CN1022768C true CN1022768C (en) | 1993-11-17 |
Family
ID=4908279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106901 Expired - Fee Related CN1022768C (en) | 1990-12-27 | 1990-12-27 | Multi-hole metal making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022768C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041847C (en) * | 1993-06-19 | 1999-01-27 | 东南大学 | Infiltration analogue method for making metal-base composite and porous metal |
-
1990
- 1990-12-27 CN CN 91106901 patent/CN1022768C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1062768A (en) | 1992-07-15 |
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