CN108247062A - Metal powder semi-liquid phase minute-pressure sinter molding device and method - Google Patents
Metal powder semi-liquid phase minute-pressure sinter molding device and method Download PDFInfo
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- CN108247062A CN108247062A CN201810085184.4A CN201810085184A CN108247062A CN 108247062 A CN108247062 A CN 108247062A CN 201810085184 A CN201810085184 A CN 201810085184A CN 108247062 A CN108247062 A CN 108247062A
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- sintering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
Abstract
The present invention relates to a kind of metal powder semi-liquid phase minute-pressure sinter molding device and methods, belong to metal powder sintered technical field.Metal powder semi-liquid phase minute-pressure sinter molding device, including sintering mechanism, load maintainer and control climate mechanism；It is sintered mechanism and includes sintering furnace and die assembly, sintering furnace is internally provided with sintering chamber, and die assembly is located at sintering intracavitary, die assembly setting accommodating chamber；Load maintainer includes loading axis and counterweight component, and loading axis is slidably connect with sintering furnace, and loading axis is slidably connect with die assembly and loading axis vertically can stretch into or be detached from accommodating chamber, and counterweight assembly set is set on the outside of loading axis；Control climate mechanism is located at outside sintering chamber, and control climate mechanism is sintered the atmosphere of intracavitary for controlling.The device simple structure, precision are high, at low cost, sintering process is easy to control, and have good application prospect in the preparation of novel powder metallurgy, heterogeneous alloy and metal-base composites.
Description
Technical field
The invention belongs to metal powder sintered technical fields, are burnt in particular to a kind of metal powder semi-liquid phase minute-pressure
Form type device and method.
Background technology
During metal powder forming, one layer of low melting point of surface recombination of refractory metal powder metal or
Alloy when sintering temperature is more than the fusing point of composite-layer metal or alloy, can realize liquid-phase sintering, be easy to get densification
Structure.Due to the mobility of liquid phase in sintering process and the density variation of different metal, the size of sample after sintering can be influenced
Precision in addition liquid phase region easily forms eutectic structure, influences whether the mechanical property of sample after sintering.Therefore, in order to avoid with
Upper defect is usually sintered in solid-liquid coexistence region, that is, semi-liquid phase sintering (or Partial Liquid Phase sintering), relative to liquid phase
Sintering, semi-liquid phase sintering temperature is more lower, small on dimensional accuracy influence due to the reduction of liquid phase ingredient, is not easy to form eutectic
Tissue, but influence whether consistency.Therefore, under semi-liquid phase sintering state, apply slight pressure, be easy to get with higher ruler
The fine and close structure of very little precision.
Existing pressure sintering mechanism mainly uses the loading of big load, complicated, precision is low, of high cost, sintered
Process control is difficult.
Invention content
It is an object of the invention in view of the above-mentioned problems, provide a kind of metal powder semi-liquid phase minute-pressure sinter molding device,
It is loaded using minute-pressure, it is simple in structure, precision is high, at low cost, with reference to control climate mechanism, sintering atmosphere can be rationally controlled, is burnt
Knot process is easy to control, and is improved the above problem.
It is another object of the present invention to provide a kind of metal powder semi-liquid phase minute-pressure sinter molding method, in metal powder
In last sintering process, axial micro-pressure is provided for metal powder, meanwhile, sintering atmosphere is controlled, improves the sintering of metal powder
Quality.
The invention is realized in this way：
The embodiment provides a kind of metal powder semi-liquid phase minute-pressure sinter molding device, including sintering mechanism,
Load maintainer and control climate mechanism；
The sintering mechanism includes sintering furnace and die assembly, and the sintering furnace is internally provided with sintering chamber, the mould
Tool component is located at the sintering intracavitary, and the die assembly is provided with the accommodating chamber for accommodating metal powder；
The load maintainer includes loading axis and counterweight component, and the sintering intracavitary, institute are stretched into one end of the loading axis
The other end for stating loading axis is located at the outside of the sintering furnace, and the loading axis is slidably connect with the sintering furnace, described
Loading axis is slidably connect with die assembly and the loading axis vertically can stretch into or be detached from the accommodating chamber, institute
It states counterweight component to be located at outside the sintering chamber, the counterweight assembly set is set on the outside of the loading axis；
The control climate mechanism is located at outside the sintering chamber, and the control climate mechanism is connected with the sintering chamber, institute
Control climate mechanism is stated for controlling the atmosphere of the sintering intracavitary.
In optional embodiment of the present invention, the sintering furnace includes pedestal, furnace body and bell, the furnace body and the bottom
Seat connection forms the sintering chamber, the one end open of the sintering chamber, and the bell is located at the openend of the sintering chamber and institute
Bell is stated for closing the sintering chamber, the bell is removably connect with the furnace body, the bell and the furnace body
Junction is provided with seal grease.
In optional embodiment of the present invention, the inner wall of the furnace body is provided with heated elements, and the heated elements are surround
The circumferentially disposed and described heated elements of the furnace body are distributed along the length direction of the loading axis, and the furnace body offers thermometric
Hole, the thermometer hole are connected through the furnace body and with the sintering chamber, and the sintering mechanism further includes thermocouple, the thermoelectricity
It is occasionally arranged in the thermometer hole and the thermocouple is connect with the furnace sealing, sintering chamber is stretched into one end of the thermocouple
Interior and contacted with the die assembly, the other end of the thermocouple is located at the outside of the furnace body and is connect with thermometer, institute
Thermometer is stated as digital display intelligent temp controlled meter.
In optional embodiment of the present invention, the control climate mechanism includes vacuum pump, vacuum meter, gas cylinder and flow
Table, the vacuum pump are connected with the sintering chamber by the first tracheae, and first tracheae includes first end and second end, described
First end is connect with the vacuum pump, and the second end is located at the sintering intracavitary and the second end is leaned on relative to the bell
The nearly pedestal, the vacuum meter are installed on first tracheae, and the vacuum meter is endotracheal for detecting described first
Vacuum degree, the output terminal of the gas cylinder are provided with the second tracheae, and institute is stretched into one end far from the gas cylinder of second tracheae
Sintering intracavitary is stated, for second tracheae relative to the pedestal close to the bell, the flowmeter is installed on second gas
Guan Shang, the flowmeter are used to detect the flow of the described second endotracheal gas.
In optional embodiment of the present invention, the load maintainer further includes stent and digital display dial gauge, the stent edge
The length direction setting of the loading axis, the outer surface of the loading axis are provided with strut, and the strut is along the loading axis
It radially extends and the strut and the loading axis connection, the digital display dial gauge is installed on the stent and the digital display thousand divides
Table is connect with one end far from the loading axis of the strut, and the strut can follow the loading axis along the loading axis
Length direction movement, the digital display dial gauge is used to measure the moving displacement of the loading axis.
In optional embodiment of the present invention, the metal powder semi-liquid phase minute-pressure sinter molding device further includes industrial meter
Calculation machine, the industrial computer are located at outside the sintering chamber, the industrial computer and the thermometer, the vacuum meter, institute
It states flowmeter and the digital display dial gauge connects respectively, the industrial computer is used to record the sintering data of metal powder.
In optional embodiment of the present invention, the die assembly include bearing and fixing mould, the bearing with it is described
Sintering furnace connects, and the fixing mould is removably connect with the bearing, and the fixing mould is located at the close of the bearing
One end of the loading axis, the accommodating chamber are opened in one end far from the bearing of the fixing mould.
In optional embodiment of the present invention, the metal powder semi-liquid phase minute-pressure sinter molding device is further included at tail gas
Component is managed, the vent gas treatment component is connected with the sintering chamber by third tracheae, and the third tracheae is located at the sintering
The bottom of stove.
In optional embodiment of the present invention, the counterweight component includes at least one counterweight, at least one counterweight
The outside of the loading axis is sheathed on, the counterweight is mild steel counterweight.
The embodiment of the present invention additionally provides a kind of metal powder semi-liquid phase minute-pressure sinter molding method, using above-mentioned gold
Belong to powder semi-liquid phase minute-pressure sinter molding device, the method includes：
Metal powder to be sintered is positioned in die assembly；
Apply axial micro-pressure to metal powder；
Atmosphere protection is provided for metal powder；
Sintering furnace is heated to preset temperature.
Compared with prior art, beneficial effects of the present invention are：
Compared with existing pressure sintering equipment, the device simple structure, precision are high, at low cost, sintering process is easily controlled
System has good application prospect in the preparation of novel powder metallurgy, heterogeneous alloy and metal-base composites.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of metal powder semi-liquid phase minute-pressure sinter molding device provided in an embodiment of the present invention.
Icon：100- metal powder semi-liquid phase minute-pressure sinter molding devices；11- sintering furnaces；111- pedestals；112- furnace bodies；
113- bells；114- is sintered chamber；115- thermometer holes；12- die assemblies；121- bearings；122- fixing moulds；123- accommodating chambers；
13- heated elements；14- thermocouples；15- thermometers；21- loading axis；211- loading ends；212- load-bearing end；213- loading units；
214- struts；22- counterweight components；221- counterweights；23- stents；24- digital display dial gauges；31- vacuum pumps；32- vacuum meters；33- gas
Bottle；34- flowmeters；The first tracheaes of 35-；351- first ends；352- second ends；The first valves of 353-；The second tracheaes of 36-；361-
Second valve；37- vent gas treatment components；38- third tracheaes；381- third valves；4- industrial computers.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be configured to arrange and design with a variety of different.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or position relationship of the instructions such as term " interior ", " outer " are base
In orientation shown in the drawings or position relationship or the invention product using when the orientation usually put or position relationship, only
It is that the present invention must have specifically with the device for describing rather than indicate or imply meaning or element is simplified for ease of description
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
Embodiment
Fig. 1 is please referred to, the present embodiment provides a kind of metal powder semi-liquid phase minute-pressure sinter molding device 100, including sintering
Mechanism, load maintainer and atmosphere control mechanism.
As shown in Figure 1, in the present embodiment, sintering mechanism includes sintering furnace 11 and die assembly 12, and sintering furnace 11 is set
There is the sintering chamber 114 of one end open, die assembly 12 is located in sintering chamber 114, and die assembly 12 is provided with receiving metal powder
Accommodating chamber 123；Load maintainer includes loading axis 21 and counterweight component 22, and loading axis 21 is stretched by being sintered the openend of chamber 114
Enter to be sintered in chamber 114, loading axis 21 is slidably connect with sintering furnace 11, and loading axis 21 can be along the length direction of loading axis 21
Accommodating chamber 123 is stretched into or is detached from, counterweight component 22 is sheathed on outside loading axis 21 and loading axis 21 is followed to move, and is burnt in metal powder
During knot, loading axis 21 can load metal powder；Control climate mechanism can be that sintering chamber 114 provides different atmosphere
Condition ensures metal powder sintered quality.In the present embodiment, under semi-liquid phase sintering state, apply small pressure, easily
Obtain the fine and close structure with higher dimensional precision.
Below to the concrete structure of all parts of the metal powder semi-liquid phase minute-pressure sinter molding device 100 and mutually it
Between position relationship be described in detail.
It is sintered mechanism and includes sintering furnace 11 and die assembly 12, sintering furnace 11 is internally provided with sintering chamber 114, is metal
Powder provides sintering space；Die assembly 12 is located in sintering chamber 114, and die assembly 12 is provided with to accommodate metal powder
Accommodating chamber 123.
Sintering furnace 11 includes pedestal 111, furnace body 112 and bell 113, and pedestal 111 is used to connect with ground or other fixtures
It connects, plays the role of support；Furnace body 112 connect formation sintering chamber 114 with pedestal 111, is sintered the one end open of chamber 114, quite
In sintering chamber 114 tool there are one openend, in the present embodiment, for the ease of picking and placeing the article being located in sintering chamber 114, bell
113 are located at the openend of sintering chamber 114, and bell 113 is sintered chamber 114 for closing.Bell 113 is detachable with furnace body 112
Connection, the junction of bell 113 and furnace body 112 is provided with seal grease so that sintering chamber 114 is closed space.
Separation and closure for the ease of bell 113 and furnace body 112, prevent bell 113 from losing, bell 113 and furnace body 112
It is rotatably connected by rotation axis.When needing to open sintering chamber 114, lift bell 113 and overturn bell 113；When
When being closed sintering chamber 114, rotation bell 113 is bonded to furnace body 112, and such connection mode operates convenient for user, improves work
Make efficiency.
The inner wall of furnace body 112 is provided with heated elements 13, and heated elements 13 are circumferentially disposed around furnace body 112, and adds
Hot element 13 is distributed along the length direction of loading axis 21, and heated elements 13 are connect with external power supply, after heated elements 13 are powered,
Heated elements 13 are the sintering heating heating of chamber 114.Heated elements 13 can be diversified forms, and user can be according to actual conditions
It chooses.As the optional mode of the present embodiment, heated elements 13 are silicon molybdenum alloy, and heating effect is high, meets the use of user
Demand.
For the ease of the temperature in detection sintering chamber 114, furnace body 112 offers thermometer hole 115, and thermometer hole 115 runs through stove
Body 112 and thermometer hole 115 are connected with sintering chamber 114, and sintering mechanism further includes thermocouple 14, and thermocouple 14 is arranged in thermometer hole
In 115, thermocouple 14 is tightly connected with furnace body 112, and one end of thermocouple 14 is stretched into sintering chamber 114 and connect with die assembly 12
It touches, the other end of thermocouple 14 is located at the outside of furnace body 112 and is connect with thermometer 15, in the detection sintering chamber 114 of thermometer 15
Temperature.As the optional mode of the present embodiment, thermometer 15 is digital display intelligent temp controlled meter, which is the prior art,
Its principles and structure the present embodiment does not describe in detail.Thermometer 15 and heated elements 13 by it is silicon-controlled (or solid-state after
Electric appliance) connection (signal is transmitted to silicon-controlled or solid-state relay, control heating or insulating process by thermometer 15), the thermometer 15
Preset temperature is provided with, when detecting that the temperature in sintering chamber 114 is below or above preset temperature, can be controlled silicon-controlled
Energization and power-off, realize heated elements 13 energization and power-off, so as to fulfill sintering chamber 114 in temperature control.
As the optional mode of the present embodiment, thermocouple 14 is platinum rhodium platinum Type B thermocouple, which is a kind of biography
The temperature element of system has thermoelectricity capability stabilization, inoxidizability strong, suitable for being used continuously in oxidisability, inert atmosphere.
Die assembly 12 includes bearing 121 and fixing mould 122, and bearing 121 is installed on pedestal 111, is used to support solid
Fixed mold 122；Fixing mould 122 is located at one end of the separate pedestal 111 of bearing 121, and fixing mould 122 is relative to bearing 121
Close to loading axis 21, fixing mould 122 is removably connect with bearing 121.One end of the separate bearing 121 of fixing mould 122
The accommodating chamber 123 for accommodating metal powder is offered, metal powder, which is located in accommodating chamber 123, to be sintered.Accommodating chamber 123 is along vertical
Direction extends, and the openend of accommodating chamber 123 is set towards bell 113.The structure type of fixing mould 122 can be a variety of
Form, user can choose different forms according to actual conditions.As the optional mode of the present embodiment, accommodating chamber 123 is
Cylindrical structure.
Load maintainer includes loading axis 21 and counterweight component 22, and one end of loading axis 21 is stretched into sintering chamber 114, loading axis
21 other end is located at the outside of sintering furnace 11, is equivalent to, and loading axis 21 is stretched into across bell 113 in sintering chamber 114.Loading axis
21 slidably connect with bell 113, and loading axis 21 can vertically (sintering furnace 11 is vertically set when using)
It is slided relative to bell 113.Loading axis 21 is slidably connect with fixing mould 122, when loading axis 21 is vertically slided
When, loading axis 21 can extend into accommodating chamber 123 or be detached from accommodating chamber 123.Counterweight component 22 is located at outside sintering chamber 114, and
And counterweight component 22 is sheathed on the outside of loading axis 21.
Loading axis 21 includes loading end 211 and load-bearing end 212, the length of loading end 211 and load-bearing end 212 along loading axis 21
Direction respectively be located at loading axis 21 both ends, loading end 211 be located at sintering chamber 114 in, and loading end 211 can extend into or
It is detached from accommodating chamber 123.The junction of loading axis 21 and bell 113 is provided with seal grease, ensures loading axis 21 and bell 113
Connection sealing.Loading end 211 is provided with the loading unit 213 coordinated with accommodating chamber 123, and loading unit 213 can with fixing mould 122
The connection of slip.Load-bearing end 212 is provided with stepped part, easy to support and fixed counterweight component 22.
As the optional mode of the present embodiment, loading axis 21 is made with bearing 121 of high intensity high purity graphite, energy
Enough high temperature resistants.
Counterweight component 22 is sheathed on load-bearing end 212, and counterweight component 22 is removably connect with loading axis 21.Counterweight group
Part 22 includes at least one counterweight 221, and at least one counterweight 221 is sheathed on the outside of loading axis 21.The weight of counterweight 221 can be with
For diversified forms, user can choose according to actual conditions.In the present embodiment, five kilograms, ten public affairs may be used in counterweight 221
Jin, 20 kilograms of three ranks, each rank can set multiple.Metal powder sintered due to the present embodiment applies in the process
Micro-pressure, so loading axis 21 is loaded by the way of counterweight 221 is manually picked and placeed.Minute-pressure load mode, can be to avoid
Load it is excessive metal powder is caused to overflow, ensure metal powder sintered quality.The load mode is easy to operate, convenient for user
Observe the data variation of metal powder sintered process.During metal powder sintered, according to different metal powders, choose
Different 221 combining forms of counterweight is sheathed on the outside of loading axis 21, realizes metal powder sintered minute-pressure loading.
As the optional mode of the present embodiment, counterweight 221 is made of ordinary low-carbon steel, and 221 surface of counterweight is into promoting the circulation of qi
Body multicomponent thermochemical treatment preservative treatment, the counterweight 221 of different quality, which is individually loaded or combined, loads the axial direction, it can be achieved that different
Pressure.
Load maintainer further includes stent 23 and digital display dial gauge 24, and stent 23 sets along the length direction of loading axis 21, adds
The outer surface for carrying axis 21 is provided with strut 214, and strut 214 is fixedly connected with loading axis 21, radial direction of the strut 214 along loading axis 21
Extension, stent 23 are used to support digital display dial gauge 24.Digital display dial gauge 24 is installed on stent 23, and it is outstanding to be equivalent to digital display dial gauge 24
Stent 23 is hung on, digital display dial gauge 24 is connect with one end of the separate loading axis 21 of stent 23, and strut 214 can follow loading axis
21 is mobile along the length direction (loading axis 21 is vertically set) of loading axis 21, when strut 214 follows loading axis 21 to move
When, digital display dial gauge 24 can measure the moving displacement of loading axis 21.Digital display dial gauge 24 is the prior art, and the present embodiment is not made
It is discussed in detail.
Control climate mechanism is located at outside sintering chamber 114, and control climate mechanism is connected with sintering chamber 114, control climate mechanism
For controlling the atmosphere in sintering chamber 114.Control climate mechanism includes vacuum pump 31, vacuum meter 32, gas cylinder 33 and flowmeter 34.
Vacuum pump 31 is connected with sintering chamber 114 by the first tracheae 35, and the first tracheae 35 includes first end 351 and second end
352, the length direction of first end 351 and second end 352 along the first tracheae 35 is distributed in the both ends of the first tracheae 35, first end
351 connect with vacuum pump 31, second end 352 be located at sintering chamber 114 in and second end 352 relative to bell 113 close to pedestal
111, the bottom that second end 352 is located at sintering chamber 114 is equivalent to, the air in sintering chamber 114 is extracted in the setting of vacuum pump 31,
Vacuum condition is provided for sintering chamber 114.The first valve 353 is provided on first tracheae 35, the first valve 353 is for control first
The vacuum degree of gas in tracheae 35.
Vacuum meter 32 is installed on the first tracheae 35 and is connected with the first tracheae 35, and vacuum meter 32 is for the first tracheae of detection
Vacuum degree in 35.
The output terminal of gas cylinder 33 is provided with the second tracheae 36, and sintering chamber is stretched into one end of the separate gas cylinder 33 of the second tracheae 36
In 114, the second tracheae 36 close to bell 113, is equivalent to the top that the second tracheae 36 is located at sintering chamber 114 relative to pedestal 111,
The setting of gas cylinder 33, convenient for providing different protective atmospheres for different sintering environment.Atmosphere in gas cylinder 33 can be argon gas,
One kind in nitrogen, hydrogen etc., can also be other atmosphere, and user can choose different protection gas according to actual conditions
Atmosphere.The second valve 361 is provided on second tracheae 36, the second valve 361 is used to control the flow of the gas in the second tracheae 36.
Flowmeter 34 is installed on the second tracheae 36, and flowmeter 34 is connected with the second tracheae 36, and flowmeter 34 is used to detect
The flow of gas in second tracheae 36.
Control climate mechanism further includes vent gas treatment component 37, and vent gas treatment component 37 passes through third gas with sintering chamber 114
Pipe 38 connects, and third tracheae 38 is located at the bottom bottom of chamber 114 (sintering) of sintering furnace 11, and the tail gas that sintering process generates is through the
Three tracheaes 38 enter vent gas treatment component 37, and the innocuous gas for reaching discharge standard is directly discharged into air, and pernicious gas is collected in
Inside vent gas treatment component 37, handled accordingly.Vent gas treatment component 37 collect tail gas provided according to gas cylinder 33 its
He determines that user can choose different vent gas treatment modes according to actual conditions.For the ease of vent gas treatment component 37
Connection with being sintered chamber 114, vent gas treatment component 37 are connect by third tracheae 38 with sintering chamber 114, are set on third tracheae 38
Third valve 381 is equipped with, third valve 381 is used for the circulation and closing of gas in third tracheae 38.
The metal powder semi-liquid phase minute-pressure sinter molding device 100 further includes industrial computer 4, and industrial computer 4 is existing
There is technology, concrete structure and principle do not describe in detail.Industrial computer 4 be located at sintering chamber 114 outside, industrial computer 4 with
Thermometer 15, vacuum meter 32, flowmeter 34 and digital display dial gauge 24 connect respectively, can realize to sintering temperature, time, gas
The real-time record of the data such as flow, vacuum degree and axial displacement and data processing.
It should be pointed out that in the present embodiment, heated elements 13, vacuum pump 31 and industrial computer 4 are and external electrical
Source connects, and external power supply provides electric energy.
In the present embodiment, using the carbonyl iron dust of market sale as raw material (grain size is 5~8 μm), chemical Ni-P plating is carried out
Alloy obtains Fe-Ni-P composite powders, after which is dried, is mixed with copper nanoparticle, by mixed Fe-Ni-P-
Cu composite powders are put into the graphite jig that internal diameter is 20mm, and pre-molding is carried out under the pressure of 20MPa, is then placed in sintering
In stove 11,10-1Under the vacuum condition of Pa, 950 DEG C are sintered, sintering process respectively under the conditions of no pressure and apply 5MPa
Axial micro-pressure under carry out, no pressure sintering after sample density be 7.1g/cm3, compression strength is 1300MPa or so,
The density of the sample of the axial micro-pressure sintering of 5MPa is 7.5g/cm3, compression strength is 2200MPa or so, sample after sintering
Consistency and intensity significantly improve.
An embodiment of the present invention provides metal powder semi-liquid phase minute-pressure sinter molding methods, include the following steps：
Step S1：Metal powder to be sintered is positioned in die assembly 12；
Bell 113 is opened, the metal powder to be sintered of pre-molding is positioned over die assembly 12 (accommodating chamber 123)
It is interior, bell 113 is covered tightly, and ensure that bell 113 is tightly connected with furnace body 112；
Step S2：Apply axial micro-pressure to metal powder；
Loading axis 21 is stretched into across bell 113 in sintering chamber 114, loading axis 21 and the junction sealing of bell 113 connect
It connects, the end of loading axis 21 is stretched into the accommodating chamber 123 of die assembly 12 and contacted with metal powder, chooses according to actual needs
Different counterweights 221 combine, and counterweight 221 is sheathed on to the outside of loading axis 21, apply axial micro-pressure to metal powder；
Step S3：Atmosphere protection is provided for metal powder；
Using the combination of vacuum pump 31 and gas cylinder 33, according to different metal powder sintered conditions, provided for sintering chamber 114
Different atmosphere protections improves metal powder sintered quality；
Step S4：Sintering furnace 11 is heated to preset temperature.
13 electrified regulation of heated elements, and the temperature in sintering chamber 114 is made to rise to default sintering temperature.
It should be noted that the sequence of step S2 and S3 do not limit, user can choose different according to actual conditions
Sequence, as long as ensure metal Powder during Sintering Process in, loading axis 21 applies axial micro-pressure, control climate mechanism (vacuum pump
31 and gas cylinder 33) control sintering chamber 114 in atmosphere.Different atmosphere can be stored in gas cylinder 33, user is according to reality
Border demand chooses required atmosphere.
The operation principle of the embodiment of the present invention is：
Mixed metal powder is put into the fixing mould 122 in sintering furnace 11, under scheduled vacuum condition, is added
Heat is sintered to specific temperature, applies certain micro-pressure in sintering process by loading axis 21 so that metal powder is being burnt
Axial micro-pressure is born during knot, meanwhile, control climate mechanism provides atmosphere protection for sintering chamber 114, improves metal powder
Sintering quality.The metal powder semi-liquid phase minute-pressure sinter molding device 100, it is simple in structure, at low cost, meeting metal powder
Under the premise of sintering quality, cut down expenses for user.
It should be noted that in the absence of conflict, the feature in embodiment in the present invention can be combined with each other.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of metal powder semi-liquid phase minute-pressure sinter molding device, which is characterized in that including sintering mechanism, load maintainer and gas
Atmosphere control mechanism；
The sintering mechanism includes sintering furnace and die assembly, and the sintering furnace is internally provided with sintering chamber, the set of molds
Part is located at the sintering intracavitary, and the die assembly is provided with the accommodating chamber for accommodating metal powder；
The load maintainer includes loading axis and counterweight component, and the sintering intracavitary is stretched into one end of the loading axis, described to add
The other end for carrying axis is located at the outside of the sintering furnace, and the loading axis is slidably connect with the sintering furnace, the loading
Axis is slidably connect with die assembly and the loading axis vertically can stretch into or be detached from the accommodating chamber, the weight
Code character part is located at outside the sintering chamber, and the counterweight assembly set is set on the outside of the loading axis；
The control climate mechanism is located at outside the sintering chamber, and the control climate mechanism is connected with the sintering chamber, the gas
Atmosphere control mechanism is used to control the atmosphere of the sintering intracavitary.
2. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 1, which is characterized in that the sintering furnace
Including pedestal, furnace body and bell, the furnace body connect to form the sintering chamber with the pedestal, and one end of the sintering chamber is opened
Mouthful, the bell is located at the openend of the sintering chamber and the bell is for closing the sintering chamber, the bell with it is described
Furnace body removably connects, and the junction of the bell and the furnace body is provided with seal grease.
3. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 2, which is characterized in that the furnace body
Inner wall is provided with heated elements, the heated elements around the furnace body circumferentially disposed and described heated elements along the loading
The length direction distribution of axis, the furnace body offer thermometer hole, and the thermometer hole connects through the furnace body and with the sintering chamber
Logical, the sintering mechanism further includes thermocouple, and the thermocouple is arranged in the thermometer hole and the thermocouple and the stove
Body is tightly connected, and one end of the thermocouple is stretched into sintering intracavitary and contacted with the die assembly, the thermocouple it is another
End is connect positioned at the outside of the furnace body and with thermometer, and the thermometer is digital display intelligent temp controlled meter.
4. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 3, which is characterized in that the atmosphere control
Mechanism processed includes vacuum pump, vacuum meter, gas cylinder and flowmeter, and the vacuum pump is connected with the sintering chamber by the first tracheae,
First tracheae includes first end and second end, and the first end is connect with the vacuum pump, and the second end is located at described
Intracavitary and the second end are sintered relative to the bell close to the pedestal, the vacuum meter is installed on first tracheae
On, for the vacuum meter for detecting the described first endotracheal vacuum degree, the output terminal of the gas cylinder is provided with the second tracheae, institute
The sintering intracavitary is stretched into the one end far from the gas cylinder for stating the second tracheae, and second tracheae is close relative to the pedestal
The bell, the flowmeter are installed on second tracheae, and the flowmeter is used to detect the described second endotracheal gas
The flow of body.
5. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 4, which is characterized in that the loading machine
Structure further includes stent and digital display dial gauge, and the stent is set along the length direction of the loading axis, the appearance of the loading axis
Face is provided with strut, the strut along the loading axis radially extend and the strut and the loading axis connection, the number
Aobvious amesdial is installed on the stent and the digital display dial gauge is connect with one end far from the loading axis of the strut, institute
Stating strut can follow the loading axis to be moved along the length direction of the loading axis, and the digital display dial gauge is described for measuring
The moving displacement of loading axis.
6. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 5, which is characterized in that the metal powder
Last semi-liquid phase minute-pressure sinter molding device further includes industrial computer, and the industrial computer is located at outside the sintering chamber, described
Industrial computer is connect respectively with the thermometer, the vacuum meter, the flowmeter and the digital display dial gauge, the industry
Computer is used to record the sintering data of metal powder.
7. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 1, which is characterized in that the set of molds
Part includes bearing and fixing mould, and the bearing is connect with the sintering furnace, and the fixing mould and the bearing are dismountable
Connection, the fixing mould are located at one end of the close loading axis of the bearing, and the accommodating chamber is opened in the fixation
One end far from the bearing of mold.
8. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 1, which is characterized in that the metal powder
Last semi-liquid phase minute-pressure sinter molding device further includes vent gas treatment component, and the vent gas treatment component and the sintering chamber pass through the
Three tracheaes connect, and the third tracheae is located at the bottom of the sintering furnace.
9. metal powder semi-liquid phase minute-pressure sinter molding device according to claim 1, which is characterized in that the counterweight group
Part includes at least one counterweight, and at least one counterweight is sheathed on the outside of the loading axis, and the counterweight is mild steel weight
Code.
10. a kind of metal powder semi-liquid phase minute-pressure sinter molding method, using metal powder described in any one of claim 1-9
Last semi-liquid phase minute-pressure sinter molding device, which is characterized in that the method includes：
Metal powder to be sintered is positioned in die assembly；
Apply axial micro-pressure to metal powder；
Atmosphere protection is provided for metal powder；
Sintering furnace is heated to preset temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810085184.4A CN108247062A (en) | 2018-01-29 | 2018-01-29 | Metal powder semi-liquid phase minute-pressure sinter molding device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810085184.4A CN108247062A (en) | 2018-01-29 | 2018-01-29 | Metal powder semi-liquid phase minute-pressure sinter molding device and method |
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| CN108247062A true CN108247062A (en) | 2018-07-06 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5938302A (en) * | 1982-08-30 | 1984-03-02 | Nissan Motor Co Ltd | Positioning jig for work |
| CN1263497A (en) * | 1998-04-08 | 2000-08-16 | 米拉克龙公司 | Impacting method and machine for forming compacts |
| CN101118112A (en) * | 2007-09-07 | 2008-02-06 | 上海中加电炉有限公司 | Large-sized vacuum hotpressing stove |
| CN101733952A (en) * | 2008-11-12 | 2010-06-16 | 王思长 | Novel gravitational potential press machine |
| CN102785382A (en) * | 2011-05-17 | 2012-11-21 | 邓传玉 | Mechanism of gravitational potential energy press |
| CN103372992A (en) * | 2012-04-17 | 2013-10-30 | 三菱综合材料技术株式会社 | Method of manufacturing finished powder product and powder forming device |
| CN203908307U (en) * | 2014-06-18 | 2014-10-29 | 上海福乃斯电炉科技有限公司 | Integrated high-temperature vacuum hot pressing sintering furnace |
| CN107314676A (en) * | 2017-08-04 | 2017-11-03 | 浙江晨华科技有限公司 | A kind of mini-sintering system |
-
2018
- 2018-01-29 CN CN201810085184.4A patent/CN108247062A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5938302A (en) * | 1982-08-30 | 1984-03-02 | Nissan Motor Co Ltd | Positioning jig for work |
| CN1263497A (en) * | 1998-04-08 | 2000-08-16 | 米拉克龙公司 | Impacting method and machine for forming compacts |
| CN101118112A (en) * | 2007-09-07 | 2008-02-06 | 上海中加电炉有限公司 | Large-sized vacuum hotpressing stove |
| CN101733952A (en) * | 2008-11-12 | 2010-06-16 | 王思长 | Novel gravitational potential press machine |
| CN102785382A (en) * | 2011-05-17 | 2012-11-21 | 邓传玉 | Mechanism of gravitational potential energy press |
| CN103372992A (en) * | 2012-04-17 | 2013-10-30 | 三菱综合材料技术株式会社 | Method of manufacturing finished powder product and powder forming device |
| CN203908307U (en) * | 2014-06-18 | 2014-10-29 | 上海福乃斯电炉科技有限公司 | Integrated high-temperature vacuum hot pressing sintering furnace |
| CN107314676A (en) * | 2017-08-04 | 2017-11-03 | 浙江晨华科技有限公司 | A kind of mini-sintering system |
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Application publication date: 20180706 |