CN103433492A - Blow molding method for powder of metal hollow product - Google Patents
Blow molding method for powder of metal hollow product Download PDFInfo
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- CN103433492A CN103433492A CN2013103645920A CN201310364592A CN103433492A CN 103433492 A CN103433492 A CN 103433492A CN 2013103645920 A CN2013103645920 A CN 2013103645920A CN 201310364592 A CN201310364592 A CN 201310364592A CN 103433492 A CN103433492 A CN 103433492A
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- 239000000843 powder Substances 0.000 title claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 61
- 239000002184 metal Substances 0.000 title claims abstract description 61
- 238000000071 blow moulding Methods 0.000 title claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 53
- 239000011230 binding agent Substances 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000005245 sintering Methods 0.000 claims abstract description 43
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 108
- 239000000463 material Substances 0.000 claims description 33
- 239000012798 spherical particle Substances 0.000 claims description 26
- 239000000314 lubricant Substances 0.000 claims description 20
- 239000001993 wax Substances 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000001746 injection moulding Methods 0.000 claims description 17
- 239000008247 solid mixture Substances 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 8
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- 235000013871 bee wax Nutrition 0.000 claims description 6
- 239000012166 beeswax Substances 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 4
- 239000008158 vegetable oil Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 15
- 238000007493 shaping process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000010963 304 stainless steel Substances 0.000 description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 235000012424 soybean oil Nutrition 0.000 description 2
- 239000003549 soybean oil Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a forming method of a metal hollow product. The problem that demoulding cannot occur to a special-shaped metal product prepared in the prior art is solved. The method comprises the first step of organic binding agent raw material preparation, the second step of the hot mixing of metal powder and organic binding agent raw material mixtures, the third step of green body preparation, the fourth step of blow molding bulging, the fifth step of demoulding, the sixth step of low-temperature heat treatment and the seventh step of high-temperature pressure-free sintering, and the metal hollow product is obtained. Blow molding is introduced into the metal powder forming process, and the product completeness rate reaches 100% after the demoulding. The method is used for forming the metal hollow product.
Description
Technical field
The present invention relates to the manufacturing process of metal hollow goods.
Background technology
In recent years, along with scientific and technological development, demand to hollow product is more and more, the material of hollow product extends to metal or ceramic material by plastics gradually, for the plastic hollow goods, can obtain by blow molding method, and the metal hollow goods often adopts the techniques such as casting, superplastic forming, Combination Welding to obtain, above process costs is high, efficiency is low, in addition, the metal material high for some fusing points, that plasticity is poor, above technique is also no longer applicable.Traditional powder injection or extrusion molding can obtain the hollow product of some simple shapes efficiently, be very suitable for some refractory metal materials simultaneously, plasticity to material does not have specific (special) requirements yet, yet for some, more than special-shaped hollow product, two kinds of technique often can't the demoulding, therefore no longer applicable, be badly in need of the demand that a kind of new and effective forming technology of exploitation meets various metal hollow goods.
In sum, in traditional profiled metal hollow product technique, goods are formed by die and the mold pressing of punch two parts mould, goods after shaping, punch can't be deviate from from goods, deviates from by force to cause the product breakage rate to reach 100%(as shown in Figure 1), therefore, existence can't release problems.
Summary of the invention
The present invention will solve that the profiled metal hollow product for preparing in prior art exists can't release problems, and the powder blow molding method of metal hollow goods is provided.
The powder blow molding method of metal hollow goods, carry out according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in injection machine, by injection moulding, prepare base substrate, plasticization temperature is 100 ℃-310 ℃, injection pressure is 20MPa-250MPa, dwell pressure 10MPa-160MPa, the dwell time is 1s-15s, obtains base substrate;
Four, blowing bulging: the base substrate die change of injection moulding is become to die, then pass into gas in base substrate, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
The powder blow molding method of metal hollow goods, carry out according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in extruder, by extrusion molding, prepare base substrate, 80 ℃-280 ℃ of plasticization temperatures, extruded velocity 50r/min-550r/min, obtain base substrate;
Four, blowing bulging: directly pass into gas in the base substrate of extrusion molding, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
The invention has the beneficial effects as follows: the present invention introduces blow molding in the shaping of metal powders process, prepare base substrate by injection or extrusion molding, by the base substrate demoulding, use separately again the matrix mould, pass into gas in the base substrate after the demoulding, base substrate and die are fitted fully, avoided the use of punch in the product molding process, therefore, die moves left and right realizes die sinking, goods can be deviate from smoothly, after the demoulding, the product serviceability rate reaches 100%(as shown in Figure 2), solved the problem that the profiled metal hollow product can't the demoulding in powder injection or extrusion molding.
The accompanying drawing explanation
Fig. 1 is conventional metals hollow product handicraft shaping schematic diagram, and 1 is die, and 2 is goods, and 3 is punch;
The powder blow molding method goods shaping schematic diagram that Fig. 2 is the metal hollow goods, 1 is die, 2 is goods.
The specific embodiment
The specific embodiment one: the powder blow molding method of the described metal hollow goods of present embodiment, carry out according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in injection machine, by injection moulding, prepare base substrate, plasticization temperature is 100 ℃-310 ℃, injection pressure is 20MPa-250MPa, dwell pressure 10MPa-160MPa, the dwell time is 1s-15s, obtains base substrate;
Four, blowing bulging: the base substrate die change of injection moulding is become to die, then pass into gas in base substrate, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
Fig. 1 is conventional metals hollow product handicraft shaping schematic diagram, and 1 is die, and 2 is goods, and 3 is punch; The powder blow molding method goods shaping schematic diagram that Fig. 2 is the metal hollow goods, 1 is die, 2 is goods.Present embodiment is introduced blow molding in the shaping of metal powders process, prepare base substrate by injection or extrusion molding, by the base substrate demoulding, use separately again the matrix mould, pass into gas in the base substrate after the demoulding, base substrate and die are fitted fully, avoided the use of punch in product forming process, therefore, die moves left and right realizes die sinking, goods can be deviate from smoothly, after the demoulding, the product serviceability rate reaches 100%(as shown in Figure 2), contrast known present embodiment by Fig. 1 and Fig. 2 and solved the problem that the profiled metal hollow product can't the demoulding in powder injection or the extrusion molding.
The specific embodiment two: present embodiment is different from the specific embodiment one: the TPO macromolecular material described in step 1 is polypropylene or polyethylene; Wax described in step 1 is paraffin or beeswax; Lubricant described in step 1 is vegetable oil or stearic acid; The mass ratio of the wax described in step 1 and TPO macromolecular material is (0.1-0.4): 1; The mass ratio of the lubricant described in step 1 and TPO macromolecular material is (0.05-0.25): 1.Other is identical with the specific embodiment one.
The specific embodiment three: present embodiment is different from one of the specific embodiment one or two: first globular metallic powder is put into to banbury in step 2 and be heated to 120 ℃-200 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 120 ℃-200 ℃, the time that heat is mixed is 1h-2h, obtains spherical particle; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.6-1); Described globular metallic powder is a kind of of powdered steel, titanium powder, niobium powder, tungsten powder, molybdenum powder or cobalt dust or several mixtures wherein, and described globular metallic powder particle diameter is 10 μ m-30 μ m.Other is identical with the specific embodiment one or two.
The specific embodiment four: present embodiment is different from one of specific embodiment one to three: in step 3, the spherical particle prepared in step 2 is joined in injection machine, prepare base substrate by injection moulding, plasticization temperature is 100 ℃-220 ℃, injection pressure is 20MPa-200MPa, dwell pressure 10MPa-150MPa, dwell time is 1s-10s, obtains base substrate.Other is identical with the specific embodiment one to three.
The specific embodiment five: present embodiment is different from one of specific embodiment one to four: in step 4, the base substrate die change of injection moulding is become to die, pass into gas again in base substrate, gas pressure is controlled at 0.5MPa-2MPa, make base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting.Other is identical with the specific embodiment one to four.
The specific embodiment six: present embodiment is different from one of specific embodiment one to five: in step 6, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-660 ℃, and the processing time is 10h-25h.Other is identical with the specific embodiment one to five.
The specific embodiment seven: present embodiment is different from one of specific embodiment one to six: in step 7, sintering temperature is 800 ℃-2100 ℃, and temperature retention time is 1h-2h.Other is identical with the specific embodiment one to six.
The specific embodiment eight: the powder blow molding method of the described metal hollow goods of present embodiment, carry out according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in extruder, by extrusion molding, prepare base substrate, 80 ℃-280 ℃ of plasticization temperatures, extruded velocity 50r/min-550r/min, obtain base substrate;
Four, blowing bulging: directly pass into gas in the base substrate of extrusion molding, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
Fig. 1 is conventional metals hollow product handicraft shaping schematic diagram, and 1 is die, and 2 is goods, and 3 is punch; The powder blow molding method goods shaping schematic diagram that Fig. 2 is the metal hollow goods, 1 is die, 2 is goods.Present embodiment is introduced blow molding in the shaping of metal powders process, prepare base substrate by injection or extrusion molding, by the base substrate demoulding, use separately again the matrix mould, pass into gas in the base substrate after the demoulding, base substrate and die are fitted fully, avoided the use of punch in product forming process, therefore, die moves left and right realizes die sinking, goods can be deviate from smoothly, after the demoulding, the product serviceability rate reaches 100%(as shown in Figure 2), contrast known present embodiment by Fig. 1 and Fig. 2 and solved the problem that the profiled metal hollow product can't the demoulding in powder injection or the extrusion molding.
The specific embodiment nine: present embodiment is different from the specific embodiment eight: the TPO macromolecular material described in step 1 is polypropylene or polyethylene; Wax described in step 1 is paraffin or beeswax; Lubricant described in step 1 is vegetable oil or stearic acid; The mass ratio of the wax described in step 1 and TPO macromolecular material is (0.1-0.4): 1; The mass ratio of the lubricant described in step 1 and TPO macromolecular material is (0.05-0.25): 1.Other is identical with the specific embodiment eight.
The specific embodiment ten: present embodiment is different from one of the specific embodiment eight or nine: first globular metallic powder is put into to banbury in step 2 and be heated to 120 ℃-200 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 120 ℃-200 ℃, the time that heat is mixed is 1h-2h, obtains spherical particle; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.6-1); Described globular metallic powder is a kind of of powdered steel, titanium powder, niobium powder, tungsten powder, molybdenum powder or cobalt dust or several mixtures wherein, and described globular metallic powder particle diameter is 10 μ m-30 μ m.Other is identical with the specific embodiment eight or nine.
The specific embodiment 11: present embodiment is different from one of specific embodiment eight to ten: in step 3, the spherical particle prepared in step 2 is joined in extruder, prepare base substrate by extrusion molding, 80 ℃-200 ℃ of plasticization temperatures, extruded velocity 50r/min-500r/min.Other is identical with the specific embodiment eight to ten.
The specific embodiment 12: present embodiment is different from one of specific embodiment eight to 11: in step 4, in the base substrate of extrusion molding, directly pass into gas, gas pressure is controlled at 1MPa-2MPa, make base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting.Other is identical with the specific embodiment eight to 11.
The specific embodiment 13: present embodiment is different from one of specific embodiment eight to 12: in step 6, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-660 ℃, and the processing time is 10h-25h.Other is identical with the specific embodiment eight to 12.
The specific embodiment 14: present embodiment is different from one of specific embodiment eight to 13: in step 7, sintering temperature is 800 ℃-2100 ℃, and temperature retention time is 1h-2h.Other is identical with the specific embodiment eight to 13.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-: the powder blow molding method of metal hollow goods, specifically carry out according to following steps:
One, organic binder bond raw material preparation: polyethylene is mixed with beeswax, obtain solid mixture, then add stearic acid in solid mixture, mix, obtain the organic binder bond raw mix;
Described beeswax and poly mass ratio are 1: 8; Described stearic acid and poly mass ratio are 1: 8;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first the spherical metal dust of 304 stainless steel is put into to banbury and be heated to 160 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 160 ℃, the time that heat is mixed is 1h, obtains spherical particle;
The spherical metal dust particle diameter of described 304 stainless steel is 10 μ m-30 μ m; The volume ratio of the spherical metal dust of described 304 stainless steel and organic adhesive raw mix is 14: 11;
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in injection machine, by injection moulding, prepare base substrate, plasticization temperature is 180 ℃, and injection pressure is 90MPa, dwell pressure 40MPa, and the dwell time is 3s, obtains base substrate;
Four, blowing bulging: the base substrate die change of injection moulding is become to die, then pass into gas in base substrate, gas pressure is controlled at 0.8MPa-1MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-560 ℃, and the processing time is 16h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 1100 ℃, and temperature retention time is 2h, finally obtains the metal hollow goods.
The spherical particle that step 2 obtains leaks by sieve that to select known grain diameter be 2mm.
It is 98.5% that metal hollow goods prepared by the present embodiment record the goods density by Archimedes's drainage.
Embodiment bis-: the powder blow molding method of metal hollow goods, specifically carry out according to following steps:
One, organic binder bond raw material preparation: polypropylene is mixed with paraffin, obtain solid mixture, then add soybean oil in solid mixture, mix, obtain the organic binder bond raw mix;
Described paraffin and polyacrylic mass ratio are 3: 16; Described soybean oil and polyacrylic mass ratio are 1: 13;
Two, globular metallic powder mixes with the heat of organic adhesive raw mix: first the spherical metal dust of titanium alloy stainless steel is put into to banbury and be heated to 180 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 180 ℃, the time that heat is mixed is 1.5h, obtains spherical particle;
The spherical metal dust particle diameter of described titanium alloy stainless steel is 10 μ m-30 μ m; The volume ratio of the spherical metal dust of described titanium alloy stainless steel and organic binder bond raw mix is 111: 89;
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in extruder, by extrusion molding, prepare base substrate, 180 ℃ of plasticization temperatures, extruded velocity 300r/min-400r/min, obtain base substrate;
Four, blowing bulging: directly pass into gas in the base substrate of extrusion molding, gas pressure is controlled at 1MPa-1.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-660 ℃, and the processing time is 18h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 1250 ℃, and temperature retention time is 2h, finally obtains the metal hollow goods.
The spherical particle that step 2 obtains leaks by sieve that to select known grain diameter be 1.5mm.
It is 98.6% that metal hollow goods prepared by the present embodiment record the goods density by Archimedes's drainage.
Claims (10)
1. the powder blow molding method of metal hollow goods is characterized in that the powder blow molding method of metal hollow goods carries out according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in injection machine, by injection moulding, prepare base substrate, plasticization temperature is 100 ℃-310 ℃, injection pressure is 20MPa-250MPa, dwell pressure 10MPa-160MPa, the dwell time is 1s-15s, obtains base substrate;
Four, blowing bulging: the base substrate die change of injection moulding is become to die, then pass into gas in base substrate, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
2. the powder blow molding method of metal hollow goods according to claim 1, is characterized in that the TPO macromolecular material described in step 1 is polypropylene or polyethylene; Wax described in step 1 is paraffin or beeswax; Lubricant described in step 1 is vegetable oil or stearic acid; The mass ratio of the wax described in step 1 and TPO macromolecular material is (0.1-0.4): 1; The mass ratio of the lubricant described in step 1 and TPO macromolecular material is (0.05-0.25): 1.
3. the powder blow molding method of metal hollow goods according to claim 1, it is characterized in that in step 2 first globular metallic powder being put into banbury and be heated to 120 ℃-200 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 120 ℃-200 ℃, the time that heat is mixed is 1h-2h, obtains spherical particle; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.6-1); Described globular metallic powder is a kind of of powdered steel, titanium powder, niobium powder, tungsten powder, molybdenum powder or cobalt dust or several mixtures wherein, and described globular metallic powder particle diameter is 10 μ m-30 μ m.
4. the powder blow molding method of metal hollow goods according to claim 1, it is characterized in that in step 3, the spherical particle prepared in step 2 being joined in injection machine, prepare base substrate by injection moulding, plasticization temperature is 100 ℃-220 ℃, injection pressure is 20MPa-200MPa, dwell pressure 10MPa-150MPa, the dwell time is 1s-10s, obtains base substrate.
5. the powder blow molding method of metal hollow goods according to claim 1, it is characterized in that, in step 4, the base substrate die change of injection moulding is become to die, pass into gas again in base substrate, gas pressure is controlled at 0.5MPa-2MPa, make base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting.
6. the powder blow molding method of metal hollow goods is characterized in that carrying out the powder blow molding method of metal hollow goods according to following steps:
One, organic binder bond raw material preparation: the TPO macromolecular material is mixed with wax, obtain solid mixture, then add lubricant in solid mixture, mix, obtain the organic binder bond raw mix;
The mass ratio of described wax and TPO macromolecular material is (0.1-0.5): 1; The mass ratio of described lubricant and TPO macromolecular material is (0.05-0.3): 1;
Two, globular metallic powder mixes with the heat of organic binder bond raw mix: first globular metallic powder is put into to banbury and be heated to 80 ℃-280 ℃, adding the organic binder bond raw mix to carry out heat mixes again, the temperature that heat is mixed is 80 ℃-280 ℃, the time that heat is mixed is 0.5h-2h, obtains spherical particle;
Described globular metallic powder particle diameter is 1 μ m-50 μ m; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.54-1.2);
Three, prepare base substrate: the spherical particle prepared in step 2 is joined in extruder, by extrusion molding, prepare base substrate, 80 ℃-280 ℃ of plasticization temperatures, extruded velocity 50r/min-550r/min, obtain base substrate;
Four, blowing bulging: directly pass into gas in the base substrate of extrusion molding, gas pressure is controlled at 0.5MPa-2.5MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting;
Five, the demoulding: the bulging base substrate outer mold of the mould of fitting is withdrawn from, and obtains the hollow member base substrate after the demoulding;
Six, Low Temperature Heat Treatment: by the K cryogenic treatment in vacuum and low temperature heat treatment sintering furnace of the hollow member base substrate after the demoulding, the temperature of Low Temperature Heat Treatment is controlled at 20 ℃-670 ℃, and the processing time is 10h-30h, obtains the forming blank after Low Temperature Heat Treatment;
Seven, high temperature pressure-free sintering: by the sintering in non-pressure sintering furnace of the forming blank after Low Temperature Heat Treatment, sintering temperature is 800 ℃-2150 ℃, and temperature retention time is 1h-3.5h, finally obtains the metal hollow goods.
7. the powder blow molding method of metal hollow goods according to claim 6, is characterized in that the TPO macromolecular material described in step 1 is polypropylene or polyethylene; Wax described in step 1 is paraffin or beeswax; Lubricant described in step 1 is vegetable oil or stearic acid; The mass ratio of the wax described in step 1 and TPO macromolecular material is (0.1-0.4): 1; The mass ratio of the lubricant described in step 1 and TPO macromolecular material is (0.05-0.25): 1.
8. the powder blow molding method of metal hollow goods according to claim 6, it is characterized in that in step 2 first globular metallic powder being put into banbury and be heated to 120 ℃-200 ℃, and then add the organic binder bond raw mix to carry out the heat mixing in banbury, the temperature that heat is mixed is 120 ℃-200 ℃, the time that heat is mixed is 1h-2h, obtains spherical particle; The volume ratio of described globular metallic powder and organic binder bond raw mix is 1: (0.6-1); Described globular metallic powder is a kind of of powdered steel, titanium powder, niobium powder, tungsten powder, molybdenum powder or cobalt dust or several mixtures wherein, and described globular metallic powder particle diameter is 10 μ m-30 μ m.
9. the powder blow molding method of metal hollow goods according to claim 6, it is characterized in that in step 3, the spherical particle prepared in step 2 being joined in extruder, prepare base substrate by extrusion molding, 80 ℃-200 ℃ of plasticization temperatures, extruded velocity 50r/min-500r/min.
10. the powder blow molding method of metal hollow goods according to claim 6, it is characterized in that directly passing into gas in step 4 in the base substrate of extrusion molding, gas pressure is controlled at 1MPa-2MPa, makes base substrate generation bulging laminating mould, the bulging base substrate of the mould that obtains fitting.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916404A (en) * | 2017-11-16 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of method for preparing molybdenum disulfide target |
| CN110976885A (en) * | 2019-12-03 | 2020-04-10 | 金上晋科技(深圳)有限公司 | Hollow metal forming process |
| US20210138545A1 (en) * | 2019-11-12 | 2021-05-13 | Jalor Industry Co., Limited | Method for manufacturing high-torque hexagonal drill shank |
| CN114308137A (en) * | 2021-12-29 | 2022-04-12 | 扬州大学 | Preparation method of hollow spherical Fenton catalyst |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178149A (en) * | 1996-09-27 | 1998-04-08 | 财团法人工业技术研究院 | Manufacture of precise cop latch |
| JP2004115898A (en) * | 2002-09-27 | 2004-04-15 | Mitsubishi Materials Corp | Sintered alloy having dynamic pressure generation groove, and method for manufacturing the same |
| CN101003091A (en) * | 2007-01-19 | 2007-07-25 | 北京科技大学 | Method for preparing blades of adjustable nozzle in use for turbocharger of engine by using powder as raw material |
| CN101205949A (en) * | 2006-12-22 | 2008-06-25 | 富准精密工业(深圳)有限公司 | Method for manufacturing hydrodynamic bearing and rotating shaft |
| CN101210585A (en) * | 2006-12-29 | 2008-07-02 | 富准精密工业(深圳)有限公司 | Dynamical pressure bearing, rotary shaft and manufacturing method thereof |
-
2013
- 2013-08-20 CN CN201310364592.0A patent/CN103433492B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178149A (en) * | 1996-09-27 | 1998-04-08 | 财团法人工业技术研究院 | Manufacture of precise cop latch |
| JP2004115898A (en) * | 2002-09-27 | 2004-04-15 | Mitsubishi Materials Corp | Sintered alloy having dynamic pressure generation groove, and method for manufacturing the same |
| CN101205949A (en) * | 2006-12-22 | 2008-06-25 | 富准精密工业(深圳)有限公司 | Method for manufacturing hydrodynamic bearing and rotating shaft |
| CN101210585A (en) * | 2006-12-29 | 2008-07-02 | 富准精密工业(深圳)有限公司 | Dynamical pressure bearing, rotary shaft and manufacturing method thereof |
| CN101003091A (en) * | 2007-01-19 | 2007-07-25 | 北京科技大学 | Method for preparing blades of adjustable nozzle in use for turbocharger of engine by using powder as raw material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916404A (en) * | 2017-11-16 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of method for preparing molybdenum disulfide target |
| US20210138545A1 (en) * | 2019-11-12 | 2021-05-13 | Jalor Industry Co., Limited | Method for manufacturing high-torque hexagonal drill shank |
| WO2021093046A1 (en) * | 2019-11-12 | 2021-05-20 | 丹阳市剑庐工具有限公司 | Preparation method for hexagonal high-torque drilling shank |
| US11801575B2 (en) * | 2019-11-12 | 2023-10-31 | Jalor Industry Co., Limited | Method for manufacturing high-torque hexagonal drill shank |
| CN110976885A (en) * | 2019-12-03 | 2020-04-10 | 金上晋科技(深圳)有限公司 | Hollow metal forming process |
| CN114308137A (en) * | 2021-12-29 | 2022-04-12 | 扬州大学 | Preparation method of hollow spherical Fenton catalyst |
| CN114308137B (en) * | 2021-12-29 | 2023-04-25 | 扬州大学 | Preparation method of hollow spherical Fenton catalyst |
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