CN85103983A - The method of mfg. moulding die and the mould that makes by this method - Google Patents
The method of mfg. moulding die and the mould that makes by this method Download PDFInfo
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- CN85103983A CN85103983A CN 85103983 CN85103983A CN85103983A CN 85103983 A CN85103983 A CN 85103983A CN 85103983 CN85103983 CN 85103983 CN 85103983 A CN85103983 A CN 85103983A CN 85103983 A CN85103983 A CN 85103983A
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Abstract
A kind of making has the method that is made of the mould of working face the metal sintering material.Its characteristics are: the first step, and bonding is mediated the plastic material that forms by sintering metal powder and synthetic resin based adhesive on mold; In second step, plastic material is pressed into working face; In the 3rd step, the synthetic resin based adhesive and the sintering metal dust wherein that add in the thermal decomposition plastic material obtain the metal sintering material.
Description
This invention is relevant being used for to stretch the mold production process in bending, deburring and other pressure processing.
Make stretching, deburring, the accepted practice of processing mould therefors such as bending is cylinder iron to cast a mould base and use synthetic resin, model of gypsum and so on material preparation.Copy model lap base to form working face, working face is worn into consistent with model.Afterwards, use phase accessory finishing process face again.In addition, add the liner metal on local working face, metal gasket will have high strength and high resistance to pressure.
Yet the contour grinding metal increases man-hour.Also need longer time and many steps with polishing of phase accessory and finishing, lack metal liner during operation and pay somebody's debt and expect repayment later and will the cost of mould be increased.
The present invention is a purpose to manage to address the above problem.
The operating procedure that the purpose of this invention is to provide a kind of mfg. moulding die economically may be produced one with this technology and make easily, and dimensional accuracy is good, i.e. the good mould of dressing accuracy, and a mould made from this technology is provided.
Above-mentioned purpose has the technical process of forming the mould of working face with the metal sintering material and reaches by providing to make, and it includes the first step, the plastic material that bonds and knead and form with sintering metal powder and synthetic resin based adhesive on mould; In second step, plastic material is pressed into working face; The 3rd step added the synthetic resin based adhesive in the thermal decomposition plastic material, and the metal dust in the sintering plastic material generates the metal sintering material.
According to this invention, also provide another kind to have the Mold Making technology of forming working face with the metal sintering material, comprising: the first step, the plastic material that bonding is kneaded and formed with metal dust and synthetic resin based adhesive on mould; In second step, plastic material is pressed in the working face; The 3rd step added the synthetic resin based adhesive in the thermal decomposition plastic material, and sintering metal dust wherein generates the metal sintering material; In the 4th step, resulting metal sintering material is done to infiltrate processing.
According to this invention, provide in addition a kind of have with the metal sintering material form working face, the a pair of Mold Making technology that comprises punch and die, the operation of making one of them mould is: the plastic material that bonding is kneaded and formed with sintering metal powder and synthetic resin based adhesive on mould; Plastic material is pressed into working face; The synthetic resin based adhesive and the sintering metal powder that add in the thermal decomposition plastic material generate the metal sintering material, and the manufacture craft of another mould comprises: plastic material bonds on mould; With the mould that has machined, the flexible flake through identical with workpiece to be processed thickness is pressed into working face to plastic material; Add synthetic resin based adhesive and sintering metal dust wherein in the thermal decomposition plastic material, generate the metal sintering material.
According to the present invention, further provide a kind of have with the metal sintering material form working face, the a pair of mold production process that comprises punch and die, make the operation of one of them mould, it may further comprise the steps: the plastic material that bonding is kneaded and formed with sintering metal powder and synthetic resin based adhesive on mould; Plastic material is pressed into working face; Add synthetic resin based adhesive and sintering metal dust wherein in the thermal decomposition plastic material, generate the metal sintering material; Resulting metal sintering material is done to infiltrate processing, the manufacture craft of another mould may further comprise the steps: plastic material bonds on mould, with the mould that has machined, process and to be processed the flexible flake that thickness is identical are pressed into working face to plastic material; Add synthetic resin based adhesive and sintering metal dust wherein in the thermal decomposition plastic material, generate the metal sintering material; Resulting metal sintering material is done to infiltrate processing.
According to this invention, the mould that is provided, has the working face that a metal sintering material is formed, the wherein a part of working face that requires high strength and high withstand voltage properties, be that the metal sintering material of obtaining from the first kind plastic material that contains superhard alloy is formed, the metal sintering material that residue partly obtains from the second quasi-plastic property material that contains sintering metal powder is formed.
According to this invention, the mould that is provided, have a working face that is bonded on the mould and come processing work, the wherein a part of working face that requires high strength and high withstand voltage properties, be that the metal sintering material of obtaining from the first kind plastic material that contains superhard metal dust is formed, all the other partly are made up of the curing materials of the second quasi-plastic property material.
As mentioned above, plastic material is bonded on the mould, and is pressed on the working face, so suppression process is simple; Because working face is made up of the metal sintering material at last, so finish the work face required time and step can reduce.Therefore, can make the high mould of dimensional accuracy at short notice, production cost also descends significantly.
And the infiltration of sintered metal materials is handled, and can improve hardness significantly, and make sintered metal materials have very big bending strength.
Owing to adopt one of them mould that has machined as the punching press model, by being inserted in the flexible flake between the mould, the plastic material as the generation sintered metal materials is pressed into working face, so, at timing, can guarantee that two moulds all have extraordinary precision.
In addition, owing to working face is formed by the metal sintering material that obtains from first kind plastic material with from metal sintering material or curing materials that the second quasi-plastic property material obtains, and the first and second quasi-plastic property materials can be pressed into the shape of working face with the phase accessory.Therefore the dimensional accuracy of working face improves, and has cancelled with polishing of phase accessory and finishing, and this just makes manufacturing cost and operation descend significantly.
At last, require the local working face of high strength and high resistance to pressure to form, therefore can give full play to its effect and can improve durability by the metal sintering material.
From following better embodiment and in conjunction with the accompanying drawings, with make we find out this invention above-mentioned with other purpose, characteristic and advantage.
Fig. 1 to 4, first implements illustration according to this invention, wherein:
Fig. 1 drawing die profile;
Fig. 2 makes the operating procedure diagram of punch;
Temperature-time curve in Fig. 3 sintering circuit;
Fig. 4 makes the operating procedure of die;
Fig. 5 to 6 implements illustration according to second of this invention, wherein:
Fig. 5 makes the operating procedure of punch;
Fig. 6 makes the operating procedure of die;
Die manufacture craft among the 3rd embodiment of Fig. 7;
Fig. 8 to 9, according to the 4th the enforcement illustration of this invention, wherein:
Fig. 8 edge-neatening apparatus profile;
Fig. 9 makes the operating procedure of trimming die;
Figure 10 to 11 implements illustration according to the 5th of this invention, wherein:
Figure 10 edge-neatening apparatus profile;
Figure 11 makes the operating procedure of trimming die;
Figure 12 is according to the 6th embodiment-beader of this invention;
Figure 13 is according to the 7th embodiment-stretching device of this invention;
The drawing die 1 that technology according to the present invention draws, as shown in Figure 1.Mould 1 comprises a vertically moving punch 2 and a fixedly die 3 that cooperates stamped workpieces W with punch 2.Represent that respectively the 2a of punch 2 and die 3 working faces and the metal sintering material that 3a is made by following operation form.
The production of narration plastic material earlier.
80 parts of certainly molten Ni alloy powders and 20 parts of molybdenum powders are put into the V-arrangement agitator and are fully mixed, and form mixed-powder.
TFE latex and acrylic resin are mixed into composite adhesives in 1: 1 ratio.
3 parts of composite adhesiveses join 100 parts to be mixed in the confused end, fully mixes with small-sized mixed kneading machine and pinches.Be heated to 100～150 ℃ mixing the material of pinching, make the water evaporates in the composite adhesives.Generate countless bulk materials with the composite adhesives cementation.
Kneading material is warmed to 80～100 ℃, obtains the sheet plastic material for several times with the roller press roll extrusion.Therefore if the cylinder of roller press is heated to identical with the temperature of kneading material, then the thin slice forming process is to realize easily.The plastic material that draws has the flexibility and the tearing toughness of appropriateness.
Secondly narration is made punch 2 with the top sheet plastic material of saying.
Shown in Fig. 2 (a), punch spare 2
0Be (the FC3 of Japanese Industrial Standards cylinder iron
0The mold of casting is formed punch 2
0The basal plane 4 of working face 2a than low 5～20 millimeters of the outer surface (shown in the figure dotted line) of the working face 2a of the punch 2 after finishing, punch 2
0Be cast member, it is after clearing up that a melanic epipedon is arranged on the basal plane 4, one deck acrylic resin viscose glue of coating.
Shown in Fig. 2 (b), P is bonded on the basal plane with the sheet plastic material, makes with the shape of working face 2a roughly the same.At this moment, in order to obtain giving fixed thickness, can gather into folds the sheet plastic coat.In addition, in order to guarantee that secure bond between basal plane 4 and the sheet plastic material P can be with the superficies of the type objects hammering sheet plastic material P of hammer.If at this moment with body of punch 2
0Be heated to 80～100 ℃, then the bonding of sheet plastic material P and compacting operation are very easy realizations.
Synthetic resin, for example acrylic resin is fixed at normal temperatures, 100～130 ℃ or above be its thermoplastic temperature, and be dissolved in trichloro-ethylene, in the organic solvents such as ethyl methyl ketone, the preparation solids content reaches 10～40% acrylic resin solution.With methods such as brushing or coatings polypropylene resin solution is coated on the plastic material P, it is penetrated among the hole of molten nickel alloy molybdenum powder particle, to improve the performance that keeps shape.
Shown in Fig. 2 (C), plastic material is heated to the vapourizing temperature of organic solution from normal temperature, and by semi-harden, resulting semi-harden plastic material P, be that tetrafluoroethylene resin in the composite adhesives and the polypropylene resin in acrylic resin and the resin solution are formed by molten certainly nickel alloy molybdenum powder, surface solidification at normal temperatures, and have the performance of good maintenance shape.This semi-harden plastic material very easily grinds with grinding stone, file, sand paper and so on article.
Then, semi-harden plastic material is ground to form thickness and the shape of working face 2a.
Shown in Fig. 2 (d), the periphery around plastic material P is attached to body of punch 2 to housing 5
0On.With ceramic powders with to put into the ceramic powders diameter be that 0.75 millimeter steel ball 6 is done supporter, cover plastic material P.Supporter plays a part to suppress change in size, has both utilized the gravity effect of steel ball 6, suppresses the expansion of (below will speak of) metal sintering material S when melting nickel alloy molybdenum powder sintering.
Then, body of punch 2
0Be placed in the vacuum sintering furnace 7, under heating and cooling condition as shown in Figure 3, organic material decomposed, make metal powder sintered.With nitrogen or reduce hydrogen by force as carrier gas.
A＞first thermal treatment zone (A among Fig. 3)
The temperature of the A thermal treatment zone rises to 650 ℃ from normal temperature, heating rate be 10～20 ℃/minute at this thermal treatment zone A, moisture content is at first vaporized, subsequently, rare resin of tetrafluoride second and polypropylene resin in the synthetic resin adhesive, and the polypropylene resin of infiltration is afterwards decomposed vaporization.Though these synthetic resin are vaporized when temperature reaches 300～400 ℃, consider from the heat conduction, should keep 600～650 ℃ to reach 90 minutes, to get rid of the maximum organic material, remaining from molten nickel alloy molybdenum powder.Variation with vacuums in the vacuum sintering furnace 7 illustrates the vaporization of organic material, and under the normal temperature, vacuum is 1 torr (Torr), but heats and remain on 650 ℃ when reaching 90 minutes when synthetic resin, and vacuum is reduced to 2 torrs (Torr).This mainly is because due to the decomposition of organic material gas.After 90 minutes, vacuum rises to 1 torr again, and this expression decomposition gas is overflowed in vacuum sintering furnace 7.
B＞second thermal treatment zone (B among Fig. 3)
The B thermal treatment zone is in 900～1000 ℃ of temperature ranges.In this zone, molten certainly nickel alloy molybdenum powder agglomerate from molten nickel alloy solidus (1010～10 ' 20 ℃) temperature for example keeps below, and 950 ℃, reach 30 minutes, handle through solid-phase sintering and make temporary transient sintering.According to first thermal treatment zone A, temperature rate-of-rise is 10～20 ℃/minute.
Molten certainly nickel alloy molybdenum powder agglomerate in vacuum sintering furnace 7, begin to heat up from the surface, therefore, require one to give the heat time heating time of determining earlier, make whole powder mass reach identical temperature, if powder mass is heated to 1000 to 1200 ℃ of sintering temperatures suddenly, the top layer will produce temperature contrast between the molten certainly nickel alloy molybdenum powder agglomerate that melts nickel alloy molybdenum powder agglomerate and contact with basal plane 4 so, therefore cause hole to increase.Not only can not form the even metal agglomerated material, and make the metal sintering material of generation defectives such as crack occur.
In second thermal treatment zone B, undecomposed organic material is gasified fully and is overflowed.Owing to this gasification or similar reason, make the vacuum in the vacuum sintering furnace 7 temporarily drop to 4 torrs, after 30 minutes, vacuum returns to 1 torr.
C＞the 3rd thermal treatment zone (C among Fig. 3)
Temperature among the C of the thermal treatment zone promptly is in 1000～1200 ℃ of scopes from being lower than slightly Zi molten nickel alloy solidus (1010～1020 ℃) to surpassing liquidus curve (1075～1085 ℃).In this zone, the molten certainly temporary transient agglomerated material of nickel alloy molybdenum is maintained fixed, for example, temperature is 1100～1180 ℃ and surpasses liquidus curve, preferably remains on 1120 ℃, keeps 120 minutes, do liquid-phase sintering and handle, form metal sintering material S by the molten certainly nickel alloy that has melted.At this moment, because the existence of molybdenum has stoped molten certainly nickel alloy to flow, and keep good shape.According to second thermal treatment zone B, specific temperature rise is 15～20 ℃/minute, and that temperature rises to the time of thermal treatment zone C is very short, because the temperature that rises in because of second thermal treatment zone B from the molten temporary transient agglomerated material of nickel alloy molybdenum heats.If in the 3rd thermal treatment zone C, there is not the sufficient time of staying, sintering just can not come into force fully, thereby causes forming defective in the metal sintering material.Mentioning above and sintering temperature will be placed 1120 ℃ reason, is because 1120 ℃ are lower than castiron body of punch 2
0Eutectic temperature.If body of punch 2
0By steel, for example cast steel is made sintering temperature and be can be 1160 ℃.Because following shortcoming: when sintering temperature was increased to 1200 ℃ of left and right sides, the change in size of metal sintering material increased, and furnace is wayward, and the Temperature Distribution in the stove is more wayward.In order to eliminate these shortcomings, suitable operating temperature is 1160 ℃.
D＞cooling zone (D among Fig. 3)
Cooling zone D is divided into three cooling zones: preliminary cooling zone D
1Temperature is according to about aforementioned sintering temperature to 800 ℃, the second cooling zone D
2Temperature from about 800 ℃ to about 400 ℃, the 3rd cooling zone D
3, temperature from about 400 ℃ to environment temperature.
Preliminary cooling zone D
1Be a stable region, the metal sintering material keeps the condition of high temperature within it.At cooling zone D
1In, in order to avoid quenching as far as possible, and considering cooling effectiveness simultaneously, metal sintering material S is with 2 ℃ of/minute slowly coolings, at cooling zone D
1Interior quenching will form many cracks in metal sintering material S.
At the second cooling zone D
2, in order to reduce body of punch 2
0Linear expansion (12.5 * 10
-6/ ℃) and Ar
1The change in size of distortion, the metal sintering material slowly cools off with 3 ℃/minute speed, and in this case, the linear contraction amount of metal sintering material S is 14.6 * 10
-6/ ℃, but because porous, metal sintering material S is with punch 2
0Shrink, if at cooling zone D
2Interior quenching, many cracks can appear in metal sintering material S.
At the 3rd cooling zone D
3In, the liquid cooling method with gas cooled (comprising the air cooling) rather than water or oil makes metal sintering material S and body of punch 2
0Be cooled to environment temperature.
Shown in Fig. 2 (e), by above-mentioned heating-cooling processing, obtain punch 2, the metal sintering material that its working face 2a is made up of molten certainly nickel alloy molybdenum.
Metal sintering material S is well attached to body of punch 2
0On, the defective of free from flaw and so on.In addition, have excellent precision, therefore dimensional discrepancy, by simple milled processed, directly can be used for drawing operation in ± 0～+ 2 millimeter scope.
The case hardness of the metal sintering material on the punch 2 that obtains from above-mentioned steps is RB 20 degree, and material has hardness like this, is then drawing usually in the operation, any problem can not occur.Yet, according to working part, may make part metal sintering material be subjected to very big pressure, in this case, because porous, the part of bearing the high pressure effect has the danger that fractures.
Therefore, among the present invention, use low melting metal, for example, penetrate in the hole of the metal sintering material that bears the high pressure effect, to improve bending strength from molten copper or nickel alloy.
Specifically, in the high pressure effect part of metal sintering material, place a copper sheet, the volume of copper roughly equates with 38～40% of this part porosity; The metal sintering material that is placed with copper sheet is placed in the vacuum drying oven, is heated to 11001120 ℃, utilize capillarity, the copper of fusing is entered in the high pressure effect hole partly, then, cool off by above-mentioned condition.
Infiltrate the high pressure effect partly with microscopic examination copper, see being full of copper in the hole, confirm further that also copper is fully attached to punch 2
0On, therefore, make the hardness of metal sintering material and bending strength that tangible growth be arranged.
Below narration is made die with above-mentioned sheet plastic material.
The making step of die 3 is shown in Fig. 4 (a)～Fig. 4 (e).The manufacturing process of die is identical with punch 2.
Specifically, comprise that cylinder iron (FC30 of Japanese Industrial Standards) casts die 3
0Shown in Fig. 4 (a).Then, same sheet plastic material P is sticked on the basal plane 8, form working face 3a roughly, shown in Fig. 4 (b).The shape of working face 3a and thickness by semi-harden, grind plastic material P and machine with punch 2 corrections etc., and shown in Fig. 4 (C), housing 5 is installed in die 3
0On, do filling with ceramic pulvis and steel ball 6, shown in Fig. 4 (d).Decompose and metal powder sintered formation sintered metal materials S through organic material, as shown in Fig. 4 (e), die 3 is made.
Low-melting-point metal, as molten certainly nickel alloy or copper, as stated above, what be penetrated into the sintered metal materials S that generated is subjected to the high pressure effect partly.
For trimming die, infiltrate to handle very and take effect.
Synthetic resin can replace used low-melting-point metal in the infiltration processing as epoxy resin, becomes rusty to the high pressure effect partly and ooze, to improve bending strength.When resin-like liquid was penetrated into plastic material P, the concentration of selected organic solvent kind and preparation was wanted to accomplish that the hole that makes acrylic resin shape liquid enter into metal powder particles goes shown in Fig. 2 (b) or Fig. 4 (b).
Fig. 5 and Fig. 6 illustrate another embodiment, form the technical process of working face 2a or 3a, technology shown in Figure 5, and plastic material P sticks on punch 2
0Basal plane on, use the die model M then
1Be pressed into working face 2a, step subsequently is with identical shown in Fig. 2 (d).
In the process shown in Figure 6, plastic material P sticks on the basal plane 8 of die 3., use flexible flake SW with workpiece W uniform thickness be placed on plastic material P on, then, use the punch model M thereafter
2, by thin slice SW plastic material P is pressed into, be pressed into working face 3a, make it reach the thickness of workpiece W.Later step is with identical shown in Fig. 4 (d).
Adopt this practice, owing to utilized M
1And M
2Model makes the operation of compacting working face 2a and 3a become very easy, and working face 2a and 3a have good dimensional accuracy.
Fig. 7 is the working face pressing process process of die 3 among another embodiment.Plastic material P sticks on die body 3 in this process
0Basal plane 8 on, thereafter, be placed on the plastic material P with the flexible flake SW of workpiece W uniform thickness, through thin slice SW, plastic material P is pressed into working face 3a with punch 2, make it reach the thickness of workpiece W.Thereafter step is identical with Fig. 4 (d).
In the above-described embodiments, ready-made punch 2 is used as the pushing model of making die 3 earlier.Yet also can carry out die 3 earlier, the pushing model of die 3 as punch 2.
In the time will suppressing the working face 3a of the working face 2a that gives first ready-made punch 2 or die 3, can plastic material P be pressed into the pushing model.
According to above-mentioned method, get a pressing mold in punch 2 and the die 3 as another, can make the good aligning accuracy of maintenance between punch 2 and the die 3.
Edge-neatening apparatus Tr as shown in Figure 8, it comprises trimming die 10 as mould, mould 10 comprises die body 10
0With working face 10a fixed thereon.Working face 10a comprises a place work piece part and a blade part 12.Blade partly is positioned at workpiece and places on the edge of part 11.
To be placed on place work piece part 11 by the workpiece W that gives the shape press molding of determining earlier, with pressing plate 13 pressurizations.Edge-trimming tool bit 14 is slidably mounted in the periphery of pressing plate 13.If drift 14 glides from shown position, then workpiece W edge will be cut away it jointly by blade part 12 and drift 14.
The blade part 12 of mould 10, requiring has high strength and high crushing resistance, and it is by the sintered metal materials S that contains superhard metal dust
1Form, get by first kind plastic material; Place work piece part 11, then the sintered metal materials S that is obtained by the sclerosis of the second quasi-plastic property material constitutes.
At first say the formation of first kind plastic material.
40 parts of WC powders and 60 parts of certainly molten Ni alloy powders are put into the V-arrangement agitator and are fully stirred, and obtain mixed-powder.
TFE latex and acrylic resin latex mixed by 1: 1, produced synthetic resin adhesive.
Five parts of synthetic resin adhesives join in 100 parts of mixed-powders, fully knead by small-sized kneader, and the material that forms of will kneading is heated to 100～150 ℃, with the water evaporates in the synthetic resin shape adhesive.Obtain the countless dough-like material that are that form with synthetic resin shape adhesive cementation.
The above-mentioned material of kneading is heated to 80～100 ℃, obtains sheet first kind plastic material P for several times with the roller press roll extrusion
1, in the case, equate that as if roller press roller temperature is brought up to the temperature of the material of kneading then sheet-like formed operation is easy to accomplish.Resulting first kind plastic material P
1, at ambient temperature, have the flexibility and the tearing toughness of appropriateness.
The formation of the second quasi-plastic property material below will be described.
The used second quasi-plastic property material comprises in this invention: except used in Fig. 7 embodiment as Fig. 1, knead outside the argillaceous plastic material that forms by sintering metal powder and synthetic resin adhesive, also have by solidifying the argillaceous material that synthetic resin and pellet and so on are kneaded and formed.Used curing synthetic resin comprises: epoxy resin, phenolic resins and acrylic resin etc.Used pellet comprises: efflorescence or granulation synthetic resin, metal, pottery, glass etc.
In this embodiment, as the second quasi-plastic property material that is adopted, be above-mentioned argillaceous plastic material, being kneaded with synthetic resin adhesive by sintering metal powder forms.
The formation of trimming die 10 is described referring now to Fig. 9.
Shown in Fig. 9 (a), die body 10
0Be to cast, have a basal plane 15, be positioned at than the outer surface of the working face 10a of mould 10 after the processing and locate (dotting on the figure) for low 10～25 millimeters by cast iron (FC30 of Japanese Industrial Standards).Mold 10
0Be cast member, mould 10
0The melanic epipedon at basal plane 15 places are acrylic resins of coating after the cleaning.
Shown in Fig. 9 (b), plastic material P
1Stick on the edge of basal plane 15 the second quasi-plastic property material P
2Cover first kind of plastic material P
1Stick on the basal plane 15, in the case, for obtaining giving fixed thickness, two kinds of plastic material P
1And P
2Can stackedly use.In addition, if die body 10
0Be heated to 80～100 ℃ then just at an easy rate plastic material P
1And P
2All paste successfully.
The workpiece W that treats deburring gives drawing earlier as the phase accessory, is placed on the first kind and the second quasi-plastic property material P
1And P
2On, with patrix 16 process workpiece W, stamping plastic material P simultaneously
1And P
2, form place work piece part 11.And blade partly 12 is cut into the corresponding shape with workpiece W.
Shown in Fig. 9 (C), housing 17 is fixed on die body 10
0On, surround first kind plastic material P
1Around, the first kind and the second quasi-plastic property material P
1And P
2All cover ceramic pulvis, and to put into diameter be that 0.75 millimeter steel ball 6 is as filler.Utilize the gravity effect of steel ball 6, eliminate dimensional discrepancy, just when WC nickel self-fluxing alloy powder (below will talk about) and nickel self-fluxing alloy molybdenum powder sintering, sintered metal materials S
1Swell value with S.
Then, die body 10
0Put into vacuum sintering furnace 7,, make organic material decompose metal pulvis sintering through heating-cooling procedure shown in Figure 3.
By above-mentioned steps, the mould 10 that obtains has WC nickel self-fluxing alloy agglomerated material S
1The place work piece part 11 that blade part of forming 12 and nickel self-fluxing alloy molybdenum agglomerated material S form.
Agglomerated material S
1With S well attached to die body 10
0On, and do not have the defective in crack and so on.And having good precision, therefore dimensional discrepancy, promptly can be used for the operation of cutting edge by simple polishing in ± 0～+ 2 millimeter scope.
The trimming die 10 that obtains like this, the deburring operation can satisfactorily be finished.Trimming die 10 has extraordinary durability, because that composition blade part part 12 is the superhard metal powder sintered material S of WC-nickel self-fluxing alloy
1In addition, trimming die 10 has fabulous intensity, and 11 agglomerated material S by nickel self-fluxing alloy molybdenum partly form because workpiece is placed.
About first kind plastic material, wherein WC powder content is preferably 20～50 parts.If content is lower than 20 parts, agglomerated material S
1Hardness reduce, and,, and make agglomerated material S then because nickel self-fluxing alloy powder content reduces if surpass 50 parts
1Bond properties reduce, and become fragility.On the other hand, the optimum amount of nickel self-fluxing alloy powder is 50～80 parts in the first kind plastic material.When the nickel self-fluxing alloy powder is less than 50 parts, agglomerated material S
1Bond properties reduce and become fragile.Opposite this content surpasses 80 parts, because the minimizing of WC powder content, and make agglomerated material S
1Hardness reduce.
With reference to Figure 10 and 11, the trimming die 10 usefulness second quasi-plastic property material P
1 2Make P
1 2But be the argillaceous material of kneading and forming with hardening synthetic resin and pellet.
Figure 10 represents another edge-neatening apparatus, and mould 10 has a working face 10a, the place work piece that working face 10a is made up of a hardening synthetic resin R partly 11 and the agglomerated material S of above-mentioned WC nickel self-fluxing alloy
1The blade part of forming 12.
The second quasi-plastic property material P
1 2, be fully to knead with a epoxy resin and 25 parts of granular iron powders to be modulated into the argillaceous material.
Shown in Figure 11 (a), mold 10
0Have and mould shown in Fig. 9 (a), identical performance and shape.
Shown in Figure 11 (b), first kind plastic material P
1Stick on mold 10
0The edge of basal plane 15 on.
Shown in Figure 11 (c), have and the place work piece flexible flake SW of same thickness partly, stick on the basal plane 15, with first kind plastic material P
1Surround, above-mentioned workpiece W is placed on thin slice SW and first kind plastic material P
1Upper surface on, with top die 16, to the pressurization of first kind plastic material, be pressed into and the corresponding blade of workpiece W partly 12 by workpiece W.
Shown in Figure 11 (d), thin slice SW longitudinal mode concrete 10
0Remove, housing 18 installs to mold 10
0On, the same procedure of talking about above using as filling, in vacuum sintering furnace 7, by heating-cooling condition that Fig. 3 gave, decomposes organic material with steel ball 6, and is metal powder sintered, obtains the agglomerated material S of WC nickel self-fluxing alloy composition
1, the blade part 12 of formation.
Shown in Figure 11 (e), the second quasi-plastic property material P
1 2Stick on the part of basal plane 15 except that blade part 12, with above-mentioned workpiece W and top die 16 common compacting place work pieces part 11, the second quasi-plastic property material P
1 2Be heated and solidify, keep 120 ℃ and reach two hours, thereby place work piece partly 11 is made up of the synthetic resin R that contains pellet.
Because the place work piece of trimming die 10 partly 11 is made up of synthetic resin R, and the frictional force between the workpiece W is little, is undoubtedly durable.
Bending apparatus Be shown in Figure 12 comprises die 19, and the punch 20 that is used as mould will cooperate with die 19, and elastic rod 21 between die 19 and pressing plate 22 of pressing plate 22 usefulness is suspended on the die 19.
Curved material limit blade part 24 is the agglomerated material S that obtain with above-mentioned operation
1Form, and place work piece partly 23 is also used above-mentioned same processes, the synthetic resin R that contains pellet forms, and in this case, place work piece part 23 can be formed with aforementioned agglomerated material S.
Work W is sandwiched between punch 20 and the pressing plate 22, with curved material limit blade part 25 of die 19 and the edge of curved material limit blade part 24 common bending workpiece W of punch 20.
Because curved material limit blade part 24 of punch 20 is by above-mentioned operation, with the agglomerated material S that contains superhard metal powder
1Form, can improve this buckling resistance partly, and improve durability simultaneously.
Stretching device Dr shown in Figure 13 comprises the die 26 as mould, the punch that matches with die 26 27 and be installed in pressing plate 28 around the punch 27.
Enormous pressure is partly born in the bending of working face 26a, because during stretched part, workpiece and dogleg section begin sliding-contact.Yet, if this part is by the agglomerated material S that contains superhard metal dust
1Form, the curved performance of resistance to compression can improve so.
In addition, in order further to improve agglomerated material S
1With the intensity of S, they can be made cure process with infiltration processing of low melting metal do or infiltration synthetic resin.
Claims (32)
1, makes the method that has with the mould of metal sintering material composition working face, it comprises: the first step, the plastic material of on boning on the mould, kneading and forming with sintering metal powder and synthetic resin based adhesive, second goes on foot, and described plastic material is compressed to the shape of working face; The 3rd step added the described synthetic resin based adhesive in the described plastic material of thermal decomposition, and the described metal dust in the described plastic material of sintering obtains sintered metal materials.
2, according to the method for claim 1 described mfg. moulding die, wherein said second step comprises: the plastic material that is bonded on the described mold roughly is pressed into working face, the described plastic material of semi-solid preparation after the preliminary compacting grinds described semi-solid preparation plastic material and is processed into the working face shape.
3, according to the method for claim 1 described mfg. moulding die, wherein said second step is to compress the described plastic material that is bonded on the described mold, with a model it is pressed into working face.
4, according to the method for claim 1,2 or 3 described mfg. moulding dies, wherein said sintering metal powder is the mixed-powder of the molybdenum powder of a kind of nickel self-fluxing alloy powder and pulverizing.
5, according to the method for claim 1,2 or 3 described mfg. moulding dies, wherein said synthetic resin based adhesive is the thermoplasticity synthetic resin emulsion.
6, according to the method for claim 1,2 or 3 described mfg. moulding dies, wherein said plastic material is to be laminar.
7, make the method that has with the mould of metal sintering material composition working face, it comprises: the first step, on boning on the mould, mediate the plastic material that forms with sintering metal powder and synthetic resin based adhesive; In second step, described plastic material is compressed to the working face shape; The 3rd step added synthetic resin based adhesive described in the described plastic material of thermal decomposition, and the described metal dust in the described plastic material of sintering obtains sintered metal materials; In the 4th step, the metal sintering material that obtains is done to infiltrate processing.
8, according to the method for claim 7 described mfg. moulding dies, wherein said second step comprises, the plastic material that is bonded on the described mold roughly is pressed into described working face; The described plastic material of semi-solid preparation after the preliminary compacting grinds described semi-solid preparation plastic material and is processed into the working face shape.
9, according to the method for claim 7 described mfg. moulding dies, wherein said second step is to compress the described plastic material that is bonded on the described mold, with a model it is pressed into working face.
10, according to the method for claim 7,8 or 9 described mfg. moulding dies, wherein said metal sintering powder is the mixed-powder of the molybdenum powder of a kind of nickel self-fluxing alloy powder and pulverizing.
11, according to the method for claim 7,8 or 9 described mfg. moulding dies, wherein said synthetic resin based adhesive is the thermoplasticity synthetic resin emulsion.
12, according to the method for claim 7,8 or 9 described mfg. moulding dies, wherein said plastic material is to be laminar.
13, make the method for a pair of mould, this comprises punch and die to mould, each mould is the working face that makes of useful metal agglomerated material all, wherein, the method of making a described mould comprises following operation: mediate the plastic material of the mixture composition that forms with sintering metal powder and synthetic resin based adhesive on boning on the mould, described plastic material is pressed into working face; Add synthetic resin based adhesive in the described plastic material of thermal decomposition and the described metal dust in the described plastic material of sintering, obtain the metal sintering material; Wherein, the preparation method of another mould comprises following operation: plastic material bonds on mould; With the described mould that has processed,, described plastic material is pressed into working face by having and the flexible flake for the treatment of mold pressing workpiece same thickness; Add the described synthetic resin based adhesive of thermal decomposition in described plastic material, and the described metal dust in the described plastic material of sintering; Obtain the metal sintering material.
14, according to the method for a pair of mould of claim 13 described manufacturings, the plastic material suppression process comprises described in the described method of one of described mould of wherein said manufacturing: the described plastic material that is bonded on the described mold roughly is pressed into described working face; The described plastic material of its preliminary compacting back semi-solid preparation; Grind the semi-solid preparation plastic material and be trimmed to the working face shape.
15, according to the method for claim 13 or a pair of mould of 14 described manufacturings, wherein said sintering metal powder is the mixed-powder of the molybdenum powder of a kind of nickel self-fluxing alloy powder and pulverizing.
16, according to the method for claim 13 or a pair of mould of 14 described manufacturings, wherein said synthetic resin based adhesive is the thermoplasticity synthetic resin emulsion.
17, according to the method for claim 13 or a pair of mould of 14 described manufacturings, wherein said plastic material is laminar.
18, make the method for a pair of mould, this comprises punch and die to mould, each mould is the working face that makes of useful metal agglomerated material all, wherein, the operation of making a described mould comprises: on boning on the mold with sintering metal powder and the synthetic resin based adhesive plastic material that the mixture that forms forms of kneading; Described plastic material is pressed into working face; Add the synthetic resin based adhesive in the described plastic material of thermal decomposition, the described metal dust in the described plastic material of sintering obtains the metal sintering material; Described metal sintering material is done infiltration handle, the preparation method of another mould comprises following operation: plastic material bonds on mold; With the described mould that has processed,, described plastic material is pressed into working face by having and the flexible flake for the treatment of mold pressing workpiece same thickness; Add the described synthetic resin based adhesive of thermal decomposition in described plastic material, and the described metal dust in the described plastic material of sintering obtains the metal sintering material; Described metal sintering material is done infiltration to be handled.
19, according to the method for a pair of mould of claim 18 described manufacturings, the plastic material suppression process comprises described in the described method of one of described mould of wherein said manufacturing: the described plastic material that is bonded on the described mold is pressed into working face roughly; The described plastic material of its preliminary compacting back semi-solid preparation grinds the semi-solid preparation plastic material and is trimmed to the working face shape.
20, according to the method for claim 18 or a pair of mould of 19 described manufacturings, wherein said sintering metal powder is the mixed-powder of the molybdenum powder of a kind of nickel self-fluxing alloy powder and pulverizing.
21, according to the method for claim 18 or a pair of mould of 19 described manufacturings, wherein said synthetic resin based adhesive is thermoplastic synthetic resin's latex.
22, according to the method for claim 18 or a pair of mould of 19 described manufacturings, wherein said plastic material is laminar.
23, has the wherein described working face of part of mould that the metal sintering material constitutes working face, requirement has high strength and high crushing resistance, be that metal sintering material by the first kind plastic material that contains superhard metal dust constitutes, the remainder of described working face is to be made of the second quasi-plastic property material that contains sintering metal powder.
24, according to claim 23 described moulds, wherein said first kind plastic material is by WC powder and the mixed-powder and the kneading of synthetic resin based adhesive of molten Ni alloy powder form certainly.
25, according to claim 23 or 24 described moulds, the wherein said second quasi-plastic property material is to be kneaded by the mixed-powder of the molybdenum powder of molten certainly Ni alloy powder and pulverizing and synthetic resin based adhesive to form.
26, according to claim 23 described moulds, wherein said mould is a trimming die, and its blade partly is to be made of the metal sintering material that described first kind plastic material obtains.
27, mould contains one and is installed on the mold, be used for the working face of processing work, described working face partly wherein, requirement has high strength and high crushing resistance, be to be made of the metal sintering material that the first kind plastic material that contains superhard metal dust obtains, all the other of described working face partly are that the curing materials by the second quasi-plastic property material constitutes.
28, according to claim 27 described moulds, wherein said first kind plastic material is to be kneaded by the mixed-powder of WC powder and molten certainly Ni alloy powder and synthetic resin based adhesive to form.
29, according to claim 27 or 28 described moulds, the wherein said second quasi-plastic property material is to be kneaded by synthetic resin and pellet to form.
30, according to claim 27 described moulds, wherein said mould is the crimp punch, and its curved material limit blade part is to be made of the metal sintering material that described first kind plastic material obtains.
31, according to claim 27 described moulds, wherein said mould is a stretched film, and its dogleg section is to be made of the metal sintering material that described first kind plastic material obtains.
32, according to claim 27 described moulds, wherein said mould is a trimming die, and its blade partly is to be made of the metal sintering material that described plastic material obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103983A CN85103983B (en) | 1985-05-23 | 1985-05-23 | Process for manufacturing molds and molds made thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103983A CN85103983B (en) | 1985-05-23 | 1985-05-23 | Process for manufacturing molds and molds made thereby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85103983A true CN85103983A (en) | 1987-03-25 |
| CN85103983B CN85103983B (en) | 1987-11-18 |
Family
ID=4793569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85103983A Expired CN85103983B (en) | 1985-05-23 | 1985-05-23 | Process for manufacturing molds and molds made thereby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85103983B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811381A (en) * | 2010-05-10 | 2010-08-25 | 赫得纳米科技(昆山)有限公司 | Novel metal fixture convenient to maintain |
| CN102228953A (en) * | 2011-06-15 | 2011-11-02 | 山东潍坊福田模具有限责任公司 | Stamping die insert lost foam manufacturing method |
| CN103182424A (en) * | 2011-12-27 | 2013-07-03 | 亿和精密工业（苏州）有限公司 | Bending die |
| CN105935767A (en) * | 2015-03-04 | 2016-09-14 | 波音公司 | Crack-free fabrication of near net shape powder-based metallic parts |
| CN107863005A (en) * | 2017-11-27 | 2018-03-30 | 武汉华星光电半导体显示技术有限公司 | Bend tool |
| CN108927460A (en) * | 2017-05-23 | 2018-12-04 | 成都飞机工业（集团）有限责任公司 | A kind of deep U type sheet metal component molding die processing method |
-
1985
- 1985-05-23 CN CN85103983A patent/CN85103983B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811381A (en) * | 2010-05-10 | 2010-08-25 | 赫得纳米科技(昆山)有限公司 | Novel metal fixture convenient to maintain |
| CN102228953A (en) * | 2011-06-15 | 2011-11-02 | 山东潍坊福田模具有限责任公司 | Stamping die insert lost foam manufacturing method |
| CN102228953B (en) * | 2011-06-15 | 2012-12-19 | 山东潍坊福田模具有限责任公司 | Stamping die insert lost foam manufacturing method |
| CN103182424A (en) * | 2011-12-27 | 2013-07-03 | 亿和精密工业（苏州）有限公司 | Bending die |
| CN105935767A (en) * | 2015-03-04 | 2016-09-14 | 波音公司 | Crack-free fabrication of near net shape powder-based metallic parts |
| US11203063B2 (en) | 2015-03-04 | 2021-12-21 | The Boeing Company | Crack-free fabrication of near net shape powder-based metallic parts |
| CN108927460A (en) * | 2017-05-23 | 2018-12-04 | 成都飞机工业（集团）有限责任公司 | A kind of deep U type sheet metal component molding die processing method |
| CN107863005A (en) * | 2017-11-27 | 2018-03-30 | 武汉华星光电半导体显示技术有限公司 | Bend tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85103983B (en) | 1987-11-18 |
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