CN105458265A - Recoverable and reusable molding control mold core for hot isostatic pressing, manufacturing method thereof and application thereof - Google Patents
Recoverable and reusable molding control mold core for hot isostatic pressing, manufacturing method thereof and application thereof Download PDFInfo
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- CN105458265A CN105458265A CN201510777677.0A CN201510777677A CN105458265A CN 105458265 A CN105458265 A CN 105458265A CN 201510777677 A CN201510777677 A CN 201510777677A CN 105458265 A CN105458265 A CN 105458265A
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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
- B22F3/15—Hot isostatic pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/46—Sputtering by ion beam produced by an external ion source
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
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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
- B22F3/15—Hot isostatic pressing
- B22F2003/153—Hot isostatic pressing apparatus specific to HIP
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- Powder Metallurgy (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a recoverable and reusable molding control mold core for hot isostatic pressing. The recoverable and reusable molding control mold core comprises a core body, a metal conducting layer and an isolating layer, wherein the core body is made of aluminum oxide ceramic, the metal conducting layer is made of Ag, and the isolating layer is made of Fe. The molding control mold core can be recovered and reused and is high in molding control accuracy, easily-corrosive material is adopted for isolating the mold core and parts, the isolating layer is corroded and removed after formation, the mold core and the parts are separated, and the molding control mold core can be recovered; material high in strength at high temperature is adopted for preparing the molding control mold core, and therefore deformation of the mold core is small at high temperature and high pressure, and the accuracy error of the formed parts is small relatively.
Description
Technical field
The invention belongs to advanced manufacturing technology field, more specifically, relate to a kind of recyclable reusable high temperature insostatic pressing (HIP) control pattern core, its manufacture method and application thereof.
Background technology
High temperature insostatic pressing (HIP) near-net-shape is that one acts on dusty material surface, dusty material generation creep consolidation under HTHP acting in conjunction by high-temperature high-pressure medium simultaneously uniformly, and then makes a kind of advanced machining technology of material forming.By accurately controlling the distortion of jacket and control mould in forming process, can near-net-shape be reached, even only be shaped.This technology is particularly useful for the shaping of difficult-to-machine material, as materials such as titanium alloy, high temperature alloy, tungsten alloy, cermets.
High temperature insostatic pressing (HIP) near-net-shape is as a kind of method of effective manufacture high-performance complicated difficult processing parts, and formation of parts has the advantage of densification, fine microstructures segregation-free, this technology at blade of aviation engine, casing; Space shuttle covering and housing; Automobile engine valve body and supercharging impeller; Offshore Oil gas field ring flange, joint, there is unique application the aspect such as valve body and pipeline.
Very complicated all is very removed in high temperature insostatic pressing (HIP) the near-net-shape preparation and following process of controlling mould, and easily produces comparatively severe contamination to environment in erosion removal process.Simplify the removal of high temperature insostatic pressing (HIP) control mould, or control mould is recycled and reused, the tool that further develops of high temperature insostatic pressing (HIP) near-net-shape technology is of great significance.Tradition HIP method adopts carbon steel as control mould usually, and Carbon Steel Die has easy processing, advantage easily of drawing materials.But Carbon Steel Die is yielding under HTHP effect, cause form error large; Carbon Steel Die is more difficult when subsequent corrosion is removed simultaneously, and produces larger pollution to environment.Propose a kind of reusable control mould preparation for processing in the present invention, effectively can solve the shortcoming of above-mentioned Carbon Steel Die.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides the reusable preparation for processing of a kind of high temperature insostatic pressing (HIP) near-net-shape control mould.The method can reduce the manufacturing cost controlling mould in high temperature insostatic pressing (HIP) near-net-shape process, improves the control type precision of control mould, and reduces subsequent corrosion to the pollution of environment.
For achieving the above object, according to one aspect of the present invention, provide a kind of recyclable reusable high temperature insostatic pressing (HIP) control pattern core, it is characterized in that, comprise core body, metal conducting layer and separation layer, wherein,
Described core body is made up of aluminium oxide ceramics;
Described metal conducting layer overlays on whole side of described core body and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag;
Described separation layer overlays on whole side of described metal conducting layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
According to another aspect of the present invention, additionally provide a kind of recyclable reusable high temperature insostatic pressing (HIP) control pattern core, it is characterized in that, comprise core body, protective layer, metal conducting layer and separation layer, wherein,
Described core body is made up of WC carbide alloy;
Described protective layer overlays on whole positions of all outer surfaces of core body, and it is made up of alumina ceramic material;
Described metal conducting layer overlays on whole side of described protective layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag;
Described separation layer overlays on whole side of described metal conducting layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
According to another aspect of the present invention, additionally provide a kind of preparation method controlling pattern core, it is characterized in that, comprise the following steps:
1) according to the shape of inner cavity of component, alumina ceramic material is adopted to make the core body corresponding to inner cavity of component shape;
2) ion plating technique is adopted to plate layer of metal Ag at aluminium oxide ceramics mold outer surface, to form metal conducting layer;
3) adopt electroforming process at the separation layer formed by Fe of surface deposition one deck 2 ~ 3mm thickness, wherein, electroforming adopts ingot iron to make anode, and in the electroplate liquid of employing, the concentration of each composition is as follows: ferrous sulfamate is 130 ~ 150g/L, and ferrous sulfamate is 130 ~ 150g/L, boric acid is 20 ~ 30g/L, urea is 150 ~ 200g/L, and in addition, the pH value of electroplate liquid is 1.5 ~ 2.5, temperature is 40 ~ 60 DEG C, and during electroforming, the current density of negative electrode is 4 ~ 5A/dm
2.
According to another aspect of the present invention, additionally provide a kind of method of application control pattern core Forming Workpiece, it is characterized in that, comprise the following steps:
1) control pattern core is put into TC4 titanium alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 8 ~ 12 DEG C/min, temperature is risen to 920 ~ 980 DEG C from room temperature, insulation 2 ~ 4h; Then with the speed of 1.5 ~ 2.5MPa/min, pressure is elevated to 100 ~ 140Mpa, then heat-insulation pressure keeping 2 ~ 4h under the temperature and pressure of 920 ~ 980 DEG C and 100 ~ 140Mpa, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer in pressed compact, with the part being separated control pattern core and formed by TC4 titanium alloy material, then reclaim control mould.
Preferably, applying ultrasonic wave can be adopted in corrosion process, the method for heat temperature raising etc., promote that dust technology is to the erosion removal of Fe separation layer, improves corrosion efficiency.
According to another aspect of the present invention, additionally provide a kind of preparation method controlling pattern core, it is characterized in that, comprise the following steps:
1) according to the shape of inner cavity of component, WC carbide alloy is adopted to make the core body corresponding to inner cavity of component shape;
2) adopt hot-spraying technique to deposit layer protective layer at core outer surface, the coating that described hot-spraying technique adopts is formed by alumina ceramic material;
3) ion plating technique is adopted to plate layer of metal Ag at protective layer outer surface, to form metal conducting layer;
4) adopt electroforming process at the separation layer formed by Fe of surface deposition one deck 2 ~ 3mm thickness, wherein, electroforming adopts ingot iron to make anode, in the electroplate liquid adopted, the concentration of each composition is as follows: frerrous chloride is 200 ~ 400g/L, ammonium chloride 60 ~ 100g/L, manganous chloride 120 ~ 180g/L, in addition, the pH value of electroplate liquid is 1.5 ~ 2.5, and temperature is 60 ~ 70 DEG C, and cathode-current density is 8 ~ 12A/dm
2.
According to another aspect of the present invention, additionally provide a kind of method of application control pattern core Forming Workpiece, it is characterized in that, comprise the following steps:
1) control pattern core is put into Co-based alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 8 ~ 12 DEG C/min, temperature is risen to 800 ~ 900 DEG C from room temperature, insulation 15 ~ 25min; Then with the speed of 1.5 ~ 2.5MPa/min, pressure is elevated to 100 ~ 140Mpa, with the speed of 4 ~ 6 DEG C/min, temperature is continued to rise to 1000 ~ 1100 DEG C simultaneously.Heat-insulation pressure keeping 2 ~ 4h under 1000 ~ 1100 DEG C and 100 ~ 140MPa condition, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer in pressed compact, with the part being separated control pattern core and formed by nickel-bass alloy material, then reclaim control mould.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
1) cost of the present invention is low, and manufacture the main production cost that control pattern core is high temperature insostatic pressing (HIP) forming technique, the present invention can make the recovery of control mould reuse, and greatly reduces the production cost of high temperature insostatic pressing (HIP) forming technique.
2) the present invention pollutes little, high temperature insostatic pressing (HIP) formation of parts subsequent corrosion is removed jacket, in mold process, is easily produced larger pollution to environment, controls that mould is recyclable to be reused in the present invention, avoid the long-time erosion removal to mould, decrease the pollution to environment.
3) efficiency of the present invention is high, high temperature insostatic pressing (HIP) part subsequent corrosion process in the present invention, avoids and corrodes for a long time control mould, substantially reduce the production cycle.
4) control type precision of the present invention is high, and the material preparation control mould adopting elevated temperature strength high, mould is out of shape little under HTHP effect, and formation of parts trueness error is relatively little.
Accompanying drawing explanation
Fig. 1 (a) ~ Fig. 1 (d) is high temperature insostatic pressing (HIP) shaping schematic diagram of the present invention, wherein Fig. 1 (a) adopts suitable heat and other static pressuring processes to carry out high temperature insostatic pressing (HIP) shaping to the control mould comprising separation layer, Fig. 1 (b) removes intermediate isolating layer for adopting suitable etching condition, the high temperature insostatic pressing (HIP) part after Fig. 1 (c) and Fig. 1 (d) are respectively and are separated and control mould;
Fig. 2 and Fig. 3 is respectively the structural representation of two kinds of heteroid control pattern cores.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
With reference to Fig. 1 ~ Fig. 3, essence of the present invention is to provide the control pattern core used in a kind of high temperature insostatic pressing (HIP) near-net-shape process, and surface has easily removes material separation layer, the preparation for processing of the corrosion resistant reusable control mould of core simultaneously.Adopt this control mould to carry out high temperature insostatic pressing (HIP) near-net-shape, only remove the separation layer between part and control mould after shaping, control mould is recycled and reuses.The production cost of high temperature insostatic pressing (HIP) near-net-shape can be reduced so greatly, reduce the pollution to environment, also make the precision of control type be improved simultaneously.
Embodiment 1
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, alumina ceramic material is adopted to make the core body 1 corresponding to inner cavity of component shape;
2) ion plating technique is adopted to plate layer of metal Ag at aluminium oxide ceramics mold outer surface, to form metal conducting layer 2;
3) adopt electroforming process at the separation layer 3 formed by Fe of surface deposition one deck 2.5mm thickness, wherein, electroforming adopts ingot iron to make anode, and in the electroplate liquid of employing, the concentration of each composition is as follows: ferrous sulfamate is 130g/L, and ferrous sulfamate is 150g/L, boric acid is 25g/L, urea is 150g/L, and in addition, the pH value of electroplate liquid is 1.5, temperature is 40 DEG C, and during electroforming, the current density of negative electrode is 4A/dm
2.
Embodiment 2
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, alumina ceramic material is adopted to make the core body 1 corresponding to inner cavity of component shape;
2) ion plating technique is adopted to plate layer of metal Ag at aluminium oxide ceramics mold outer surface, to form metal conducting layer 2;
3) adopt electroforming process at the separation layer 3 formed by Fe of surface deposition one deck 2mm thickness, wherein, electroforming adopts ingot iron to make anode, and in the electroplate liquid of employing, the concentration of each composition is as follows: ferrous sulfamate is 140g/L, and ferrous sulfamate is 140g/L, boric acid is 20g/L, urea is 180g/L, and in addition, the pH value of electroplate liquid is 2, temperature is 60 DEG C, and during electroforming, the current density of negative electrode is 5A/dm
2.
Embodiment 3
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, alumina ceramic material is adopted to make the core body 1 corresponding to inner cavity of component shape;
2) ion plating technique is adopted to plate layer of metal Ag at aluminium oxide ceramics mold outer surface, to form metal conducting layer 2;
3) adopt electroforming process at the separation layer 3 formed by Fe of surface deposition one deck 3mm thickness, wherein, electroforming adopts ingot iron to make anode, and in the electroplate liquid of employing, the concentration of each composition is as follows: ferrous sulfamate is 150g/L, and ferrous sulfamate is 130g/L, boric acid is 30g/L, urea is 200g/L, and in addition, the pH value of electroplate liquid is 2.5, temperature is 50 DEG C, and during electroforming, the current density of negative electrode is 4.5A/dm
2.
Embodiment 4
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into TC4 titanium alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 10 DEG C/min, temperature is risen to 950 DEG C from room temperature, insulation 2h; Then with the speed of 1.5MPa/min, pressure is elevated to 120Mpa, then heat-insulation pressure keeping 2h under 920 DEG C of temperature and pressures with 100Mpa, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 in pressed compact, with the part being separated control pattern core and formed by TC4 titanium alloy material, then reclaim control mould.
Embodiment 5
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into TC4 titanium alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 12 DEG C/min, temperature is risen to 920 DEG C from room temperature, insulation 3h; Then with the speed of 2MPa/min, pressure is elevated to 100Mpa, then heat-insulation pressure keeping 4h under 980 DEG C of temperature and pressures with 120Mpa, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 in pressed compact, with the part being separated control pattern core and formed by TC4 titanium alloy material, then reclaim control mould.
Embodiment 6
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into TC4 titanium alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 8 DEG C/min, temperature is risen to 980 DEG C from room temperature, insulation 4h; Then with the speed of 2.5MPa/min, pressure is elevated to 140Mpa, then heat-insulation pressure keeping 3h under 950 DEG C of temperature and pressures with 140Mpa, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 in pressed compact, with the part being separated control pattern core and formed by TC4 titanium alloy material, then reclaim control mould.
Embodiment 7
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, WC carbide alloy is adopted to make the core body 1 ' corresponding to inner cavity of component shape;
2) adopt hot-spraying technique at core body 1 ' outside deposition layer protective layer 4 ', the coating that described hot-spraying technique adopts is formed by alumina ceramic material;
3) ion plating technique is adopted to plate layer of metal Ag, to form metal conducting layer 2 ' at protective layer 4 ' outer surface;
4) adopt electroforming process at the separation layer 3 ' formed by Fe of surface deposition one deck 2.5mm thickness, wherein, electroforming adopts ingot iron to make anode, in the electroplate liquid adopted, the concentration of each composition is as follows: frerrous chloride is 200g/L, ammonium chloride 60g/L, manganous chloride 120g/L, in addition, the pH value of electroplate liquid is 1.5, and temperature is 70 DEG C, and cathode-current density is 8A/dm
2.
Embodiment 8
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, WC carbide alloy is adopted to make the core body 1 ' corresponding to inner cavity of component shape;
2) adopt hot-spraying technique at core body 1 ' outside deposition layer protective layer 4 ', the coating that described hot-spraying technique adopts is formed by alumina ceramic material;
3) ion plating technique is adopted to plate layer of metal Ag, to form metal conducting layer 2 ' at protective layer 4 ' outer surface;
4) adopt electroforming process at the separation layer 3 ' formed by Fe of surface deposition one deck 2mm thickness, wherein, electroforming adopts ingot iron to make anode, in the electroplate liquid adopted, the concentration of each composition is as follows: frerrous chloride is 400g/L, ammonium chloride 80g/L, manganous chloride 180g/L, in addition, the pH value of electroplate liquid is 2, and temperature is 65 DEG C, and cathode-current density is 12A/dm
2.
Embodiment 9
Control a preparation method for pattern core, comprise the following steps:
1) according to the shape of inner cavity of component, WC carbide alloy is adopted to make the core body 1 ' corresponding to inner cavity of component shape;
2) adopt hot-spraying technique at core body 1 ' outside deposition layer protective layer 4 ', the coating that described hot-spraying technique adopts is formed by alumina ceramic material;
3) ion plating technique is adopted to plate layer of metal Ag, to form metal conducting layer 2 ' at protective layer 4 ' outer surface;
4) adopt electroforming process at the separation layer 3 ' formed by Fe of surface deposition one deck 3mm thickness, wherein, electroforming adopts ingot iron to make anode, in the electroplate liquid adopted, the concentration of each composition is as follows: frerrous chloride is 300g/L, ammonium chloride 100g/L, manganous chloride 150g/L, in addition, the pH value of electroplate liquid is 2.5, and temperature is 60 DEG C, and cathode-current density is 10A/dm
2.
Embodiment 10
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into Co-based alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, nickel-base alloy can be Refractoloy, abros, nickel-base antiwear alloy, Ni-based Precise Alloy or Ni-based marmem, such as Ni625, inconel625 etc., the process of heating pressurization is:
With the speed of 10 DEG C/min, temperature is risen to 900 DEG C from room temperature, insulation 25min; Then with the speed of 1.5MPa/min, pressure is elevated to 120Mpa, with the speed of 4 DEG C/min, temperature is continued to rise to 1000 DEG C simultaneously.Heat-insulation pressure keeping 2h under 1000 DEG C and 100MPa condition, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 ' in pressed compact, with the part being separated control pattern core and formed by nickel-bass alloy material, then reclaim control mould.
Embodiment 11
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into Co-based alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, nickel-base alloy can be Refractoloy, abros, nickel-base antiwear alloy, Ni-based Precise Alloy or Ni-based marmem, such as Ni625, inconel625 etc., the process of heating pressurization is:
With the speed of 8 DEG C/min, temperature is risen to 850 DEG C from room temperature, insulation 20min; Then with the speed of 2MPa/min, pressure is elevated to 100Mpa, with the speed of 6 DEG C/min, temperature is continued to rise to 1050 DEG C simultaneously.Heat-insulation pressure keeping 4h under 1100 DEG C and 120MPa condition, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 ' in pressed compact, with the part being separated control pattern core and formed by nickel-bass alloy material, then reclaim control mould.
Embodiment 12
A method for application control pattern core Forming Workpiece, comprises the following steps:
1) control pattern core is put into Co-based alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, nickel-base alloy can be Refractoloy, abros, nickel-base antiwear alloy, Ni-based Precise Alloy or Ni-based marmem, such as Ni625, inconel625 etc., the process of heating pressurization is:
With the speed of 12 DEG C/min, temperature is risen to 800 DEG C from room temperature, insulation 15min; Then with the speed of 2.5MPa/min, pressure is elevated to 140Mpa, with the speed of 5 DEG C/min, temperature is continued to rise to 1100 DEG C simultaneously.Heat-insulation pressure keeping 3h under 1050 DEG C and 140MPa condition, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer 3 ' in pressed compact, with the part being separated control pattern core and formed by nickel-bass alloy material, then reclaim control mould.
Embodiment 13
A kind of recyclable reusable high temperature insostatic pressing (HIP) control pattern core, comprise core body 1, metal conducting layer 2 and separation layer 3, wherein, described core body 1 is made up of aluminium oxide ceramics; Described metal conducting layer 2 overlays on whole side of described core body 1 and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag; Described separation layer 3 overlays on whole side of described metal conducting layer 2 and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
Embodiment 14
A kind of recyclable reusable high temperature insostatic pressing (HIP) control pattern core, comprise core body 1 ', protective layer 4 ', metal conducting layer 2 ' and separation layer 3 ', wherein, described core body 1 ' is made up of WC carbide alloy; Described protective layer 4 ' overlays on whole positions of all surface of core body 1 ', and it is made up of alumina ceramic material; Described metal conducting layer 2 ' overlays on whole side of described protective layer 4 ' and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag; Described separation layer 3 ' overlays on whole side of described metal conducting layer 2 ' and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a recyclable reusable high temperature insostatic pressing (HIP) control pattern core, is characterized in that, comprise core body, metal conducting layer and separation layer, wherein,
Described core body is made up of aluminium oxide ceramics;
Described metal conducting layer overlays on whole side of described core body and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag;
Described separation layer overlays on whole side of described metal conducting layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
2. a recyclable reusable high temperature insostatic pressing (HIP) control pattern core, is characterized in that, comprise core body, protective layer, metal conducting layer and separation layer, wherein,
Described core body is made up of WC carbide alloy;
Described protective layer overlays on whole positions of all outer surfaces of core body, and it is made up of alumina ceramic material;
Described metal conducting layer overlays on whole side of described protective layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Ag;
Described separation layer overlays on whole side of described metal conducting layer and whole positions of upper bottom surface and/or bottom surface, and it is made up of Fe.
3. a preparation method for control pattern core according to claim 1, is characterized in that, comprise the following steps:
1) according to the shape of inner cavity of component, alumina ceramic material is adopted to make the core body corresponding to inner cavity of component shape;
2) ion plating technique is adopted to plate layer of metal Ag at aluminium oxide ceramics mold outer surface, to form metal conducting layer;
3) adopt electroforming process at the separation layer formed by Fe of surface deposition one deck 2 ~ 3mm thickness, wherein, electroforming adopts ingot iron to make anode, and in the electroplate liquid of employing, the concentration of each composition is as follows: ferrous sulfamate is 130 ~ 150g/L, and ferrous sulfamate is 130 ~ 150g/L, boric acid is 20 ~ 30g/L, urea is 150 ~ 200g/L, and in addition, the pH value of electroplate liquid is 1.5 ~ 2.5, temperature is 40 ~ 60 DEG C, and during electroforming, the current density of negative electrode is 4 ~ 5A/dm
2.
4. application rights requires a method for the control pattern core Forming Workpiece described in 1, it is characterized in that, comprises the following steps:
1) control pattern core is put into TC4 titanium alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 8 ~ 12 DEG C/min, temperature is risen to 920 ~ 980 DEG C from room temperature, insulation 2 ~ 4h; Then with the speed of 1.5 ~ 2.5MPa/min, pressure is elevated to 100 ~ 140Mpa, then heat-insulation pressure keeping 2 ~ 4h under the temperature and pressure of 920 ~ 980 DEG C and 100 ~ 140Mpa, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer in pressed compact, with the part being separated control pattern core and formed by TC4 titanium alloy material, then reclaim control pattern core.
5. method according to claim 4, is characterized in that: can adopt applying ultrasonic wave in corrosion process, the method for heat temperature raising etc., promotes that dust technology is to the erosion removal of Fe separation layer, improves corrosion efficiency.
6. a preparation method for control pattern core according to claim 2, is characterized in that, comprise the following steps:
1) according to the shape of inner cavity of component, WC carbide alloy is adopted to make the core body corresponding to inner cavity of component shape;
2) adopt hot-spraying technique to deposit layer protective layer at core outer surface, the coating that described hot-spraying technique adopts is formed by alumina ceramic material;
3) ion plating technique is adopted to plate layer of metal Ag at protective layer outer surface, to form metal conducting layer;
4) adopt electroforming process at the separation layer formed by Fe of surface deposition one deck 2 ~ 3mm thickness, wherein, electroforming adopts ingot iron to make anode, in the electroplate liquid adopted, the concentration of each composition is as follows: frerrous chloride is 200 ~ 400g/L, ammonium chloride 60 ~ 100g/L, manganous chloride 120 ~ 180g/L, in addition, the pH value of electroplate liquid is 1.5 ~ 2.5, and temperature is 60 ~ 70 DEG C, and cathode-current density is 8 ~ 12A/dm
2.
7. application rights requires a method for the control pattern core Forming Workpiece described in 2, it is characterized in that, comprises the following steps:
1) control pattern core is put into Co-based alloy powder, to form pressed compact, after this overlap jacket outward at pressed compact, then pressed compact is put into high temperature insostatic pressing (HIP) stove and carry out heating pressurized treatments, wherein, the process of heating pressurization is:
With the speed of 8 ~ 12 DEG C/min, temperature is risen to 800 ~ 900 DEG C from room temperature, insulation 15 ~ 25min; Then with the speed of 1.5 ~ 2.5MPa/min, pressure is elevated to 100 ~ 140Mpa, with the speed of 4 ~ 6 DEG C/min, temperature is continued to rise to 1000 ~ 1100 DEG C simultaneously.Heat-insulation pressure keeping 2 ~ 4h under 1000 ~ 1100 DEG C and 100 ~ 140MPa condition, release of then lowering the temperature;
2) when high temperature insostatic pressing (HIP) stove is cooled to room temperature, take out pressed compact, then remove jacket;
3) adopt dust technology to carry out erosion removal to the separation layer in pressed compact, with the part being separated control pattern core and formed by nickel-bass alloy material, then reclaim control pattern core.
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| CN111360261A (en) * | 2020-03-30 | 2020-07-03 | 宁波江丰电子材料股份有限公司 | Processing method of recyclable sheath |
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