CN109622983A - A kind of preparation method of increasing material manufacturing mould steel globular metallic powder - Google Patents
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder Download PDFInfo
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- CN109622983A CN109622983A CN201811623930.7A CN201811623930A CN109622983A CN 109622983 A CN109622983 A CN 109622983A CN 201811623930 A CN201811623930 A CN 201811623930A CN 109622983 A CN109622983 A CN 109622983A
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- mould steel
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a kind of increasing material manufacturing preparation method of mould steel globular metallic powder, (1) carries out melting to mould steel using vacuum induction melting technique and electroslag remelting process, obtains mold rod iron according to the ingredient composition of mould steel；(2) the mold rod iron obtained carries out finishing processing, obtains electrode bar；(3) first obtained electrode bar is fitted into the PREP powder manufacturing apparatus in reaction chamber, reaction chamber is vacuumized later, inert gas is finally poured into reaction chamber；(4) fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mould steel globular metallic powder after cooling；(5) under the protection of inert gas, mould steel globular metallic powder obtained is sieved and is packed.The steel ball shape metal powder of preparation method preparation through the invention, average particle size are 40 μm -200 μm, and sphericity is greater than 98%.
Description
Technical field
The invention belongs to increase material fabricating technology field, more particularly to a kind of increasing material manufacturing mould steel spherical metal
The preparation method of powder.
Background technique
Mold is one of extremely important industrial equipment in modern manufacturing industry, is a kind of to become blank by external force to have
The tool of specific shape and size product is mainly used for the mass production of the components and product of industrial products kind.Mold work
Industry is to measure the one of the important signs that of a national manufacturing industry level, and the height of mould industry level directly shows the matter of mold
In amount and service life.Currently, the manufacture of mold is with numerical controlled machinery processing (numerical control turning, numerical control milling etc.) and numerical control electric machining (number
Control electrical discharge machining etc.) based on, but the production efficiency of these modes is low, the manufacturing cycle is long, and is difficult to even add
Work labyrinth.Therefore seek new processing method, push the transition and upgrade of mold manufacture extremely urgent.
Increases material manufacturing technology is also known as 3D printing, based on the layer-by-layer formation of parts of mode of " discrete-accumulation ", adds with tradition
Work mode is compared, and frock clamp is not needed, and the part of arbitrarily complicated shape can be processed, the design of part is no longer by processing method
With the limitation of assembly.Therefore, increases material manufacturing technology provides a kind of new method and approach for mold processing.With increasing material manufacturing
The fast development of technology, to its most important raw material --- metal powder also proposed new requirement.What the U.S. in 2015 was held
In 7th laser gain material manufacture seminar, President of the General Assembly Ingomar Kelbassa is pointed out, for metal increases material manufacturing technology
For, select the metal powder of high quality extremely important, the quality significant impact of metal powder the quality of final products.With
Other PM techniques are compared, and increases material manufacturing technology is higher for the performance control needs of powder, it is necessary to meet powder diameter
Tiny, narrower particle size distribution, sphericity height, good fluidity and apparent density height etc. require.
Summary of the invention
The object of the present invention is to provide a kind of increasing material manufacturing preparation methods of mould steel globular metallic powder, to ensure
Increasing material manufacturing mould steel spherical powder ingredient is uniform, fine microstructures, has excellent performance, and meets the requirement of engineer application.
In order to achieve the above object, the technical scheme adopted by the invention is that, a kind of increasing material manufacturing is golden with mold steel ball shape
The preparation method for belonging to powder, is specifically implemented according to the following steps:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It vacuumizes, inert gas is finally poured into reaction chamber；
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；
Step 5, under the protection of inert gas, mould steel globular metallic powder obtained is sieved and is packed.
Technical solution of the present invention also has the following characteristics that
In the step 2: the diameter of the electrode bar is 10mm-100mm, length 600mm-800mm, roundness deviation
Less than 0.05mm, straightness deviation is less than 0.1mm/m, and roughness is less than 1.5 μm.
In the step 3,10 are evacuated to reaction chamber-3Pa-10-2Pa。
In the step 3, after pouring inert gas into reaction chamber, reacting indoor pressure is 0.01MPa-1MPa.
In the step 3, the oxygen content in the inert gas is less than 0.1wt%.
In the step 4, the revolving speed that electrode bar carries out centrifugal action in the PREP powder manufacturing apparatus is 10000r/
min-20000r/min。
In the step 4, the power of the plasma gun in the PREP powder manufacturing apparatus is 100kW-300kW.
The inert gas is the one or more of helium, argon gas or helium argon.
The beneficial effects of the present invention are: the preparation method of increasing material manufacturing of the invention with mould steel globular metallic powder, leads to
PREP powder manufacturing apparatus is crossed using untransferable arc plasma rotating electrode processing, high-quality, high ball are made under the conditions of ultrahigh rotating speed
The mold comminuted steel shot of shape degree, can satisfy the application demand of increases material manufacturing technology；The steel ball shape of preparation method preparation through the invention
Metal powder, average particle size are 40 μm -200 μm, more particularly to which superfines of the average particle size less than 60 μm, field trash is made
Less than 8/kg, pulverizing process oxygenation amount is controllable within the scope of 100-1000ppm, and can guarantee tool steel ball shape metal powder
Sphericity is greater than 98%.
Detailed description of the invention
Fig. 1 is the stereoscan photograph of mould steel globular metallic powder made from preparation method through the invention.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment to technical solution of the present invention, it is described in further detail.
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
10mm-100mm, length 600mm-800mm, roundness deviation are less than 0.05mm, and straightness deviation is less than 0.1mm/m, roughness
Less than 1.5 μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 10-3Pa-10-2Pa finally pours inert gas into reaction chamber, makes to react indoor pressure 0.01MPa-
1MPa。
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；The revolving speed that electrode bar carries out centrifugal action in PREP powder manufacturing apparatus is 10000r/min-20000r/min, PREP
The power of plasma gun in powder manufacturing apparatus be 100kW-300kW, plasma gun transmitting plasma to electrode stick end into
Row heating, makes its end uniform melt, and melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, liquid
Drop rapidly cools to form mould steel globular metallic powder in inert gas environment, falls into the collector of reaction chamber bottom；
Step 5, under the protection of inert gas, mould steel globular metallic powder obtained is sieved and is packed.
It should be noted that inert gas is the one or more of helium, argon gas or helium argon, the oxygen content in inert gas
Less than 0.1wt%.
As shown in Figure 1, the sphericity of the tool steel ball shape metal powder of preparation method preparation is high through the invention, surface topography
Well, average particle size is 40 μm -200 μm, and the sphericity of steel ball shape metal powder is greater than 98%.
Embodiment 1
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
10mm, length 600mm, roundness deviation 0.05mm, straightness deviation are 0.1mm/m, and roughness is 1.5 μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 10-3Pa finally pours nitrogen into reaction chamber, makes to react indoor pressure 0.01MPa.
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；Electrode bar carries out the revolving speed of centrifugal action for 10000r/min, in PREP powder manufacturing apparatus in PREP powder manufacturing apparatus
Plasma gun power be 100kW, plasma gun transmitting plasma electrode stick end is heated, keep its end equal
Even fusing, melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, and drop is fast in nitrogen environment
Speed is cooled into mould steel globular metallic powder, falls into the collector of reaction chamber bottom；
Step 5, under the protection of nitrogen, mould steel globular metallic powder obtained is sieved and is packed.
The tool steel ball shape metal powder of preparation method preparation through the invention, average particle size are 49 μm, steel ball shape metal
The sphericity of powder is greater than 99.4%.
Embodiment 2
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
55mm, length 500mm, roundness deviation 0.03mm, straightness deviation are 0.045mm/450mm, and roughness is less than 1.22 μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 2 × 10-3Pa finally pours nitrogen into reaction chamber, makes to react indoor pressure 0.13MPa；
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；Electrode bar carries out the revolving speed of centrifugal action for 11000r/min, in PREP powder manufacturing apparatus in PREP powder manufacturing apparatus
Plasma gun power be 200kW, plasma gun transmitting plasma electrode stick end is heated, keep its end equal
Even fusing, melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, and drop is fast in nitrogen environment
Speed is cooled into mould steel globular metallic powder, falls into the collector of reaction chamber bottom；
Step 5, under the protection of nitrogen, mould steel globular metallic powder obtained is sieved and is packed.
The tool steel ball shape metal powder of preparation method preparation through the invention, average particle size are 55 μm, steel ball shape metal
The sphericity of powder is greater than 99.1%.
Embodiment 3
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
75mm, length 650mm, roundness deviation 0.025mm, straightness deviation are 0.025mm/650mm, and roughness is 0.58 μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 7 × 10-3Pa finally pours nitrogen into reaction chamber, makes to react indoor pressure 0.14MPa.
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；Electrode bar carries out the revolving speed of centrifugal action for 19000r/min, in PREP powder manufacturing apparatus in PREP powder manufacturing apparatus
Plasma gun power be 100kW, plasma gun transmitting plasma electrode stick end is heated, keep its end equal
Even fusing, melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, and drop is fast in nitrogen environment
Speed is cooled into mould steel globular metallic powder, falls into the collector of reaction chamber bottom；
Step 5, under the protection of nitrogen, mould steel globular metallic powder obtained is sieved and is packed.
The tool steel ball shape metal powder of preparation method preparation through the invention, average particle size are 51 μm, steel ball shape metal
The sphericity of powder is greater than 99.6%.
Embodiment 4
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
65mm, length 800mm, roundness deviation are less than 0.06mm, and straightness deviation is less than 0.04mm/800mm, and roughness is less than 1.23
μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 3 × 10-3Pa Pa, finally pours nitrogen into reaction chamber, makes to react indoor pressure 0.14MPa.
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；Electrode bar carries out the revolving speed of centrifugal action for 17000r/min, in PREP powder manufacturing apparatus in PREP powder manufacturing apparatus
Plasma gun power be 300kW, plasma gun transmitting plasma electrode stick end is heated, keep its end equal
Even fusing, melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, and drop is fast in nitrogen environment
Speed is cooled into mould steel globular metallic powder, falls into the collector of reaction chamber bottom；
Step 5, under the protection of nitrogen, mould steel globular metallic powder obtained is sieved and is packed.
The tool steel ball shape metal powder of preparation method preparation through the invention, average particle size are 65 μm, steel ball shape metal
The sphericity of powder is greater than 99.7%.
Implementation column 5
A kind of preparation method of increasing material manufacturing mould steel globular metallic powder of the invention, it is specifically real according to the following steps
It applies:
Step 1, according to the ingredient composition of mould steel, using vacuum induction melting technique and electroslag remelting process to mould steel
Melting is carried out, mold rod iron is obtained；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；The diameter of electrode bar is
100mm, length 800mm, roundness deviation 0.05mm, straightness deviation are 0.1mm/m, and roughness is 1.5 μm；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, later to reaction chamber
It is evacuated to 10-2Pa finally pours nitrogen into reaction chamber, makes to react indoor pressure 1MPa.
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mold steel ball shape after cooling
Metal powder；Electrode bar carries out the revolving speed of centrifugal action for 20000r/min, in PREP powder manufacturing apparatus in PREP powder manufacturing apparatus
Plasma gun power be 300kW, plasma gun transmitting plasma electrode stick end is heated, keep its end equal
Even fusing, melt can occur to be atomized and throw away to form drop from electrode stick end under the action of the centrifugal, and drop is fast in nitrogen environment
Speed is cooled into mould steel globular metallic powder, falls into the collector of reaction chamber bottom；
Step 5, under the protection of nitrogen, mould steel globular metallic powder obtained is sieved and is packed.
The tool steel ball shape metal powder of preparation method preparation through the invention, average particle size are 57 μm, steel ball shape metal
The sphericity of powder is greater than 99.3%.
Claims (8)
1. a kind of increasing material manufacturing preparation method of mould steel globular metallic powder, which is characterized in that specifically according to the following steps
Implement:
Step 1, according to the ingredient composition of mould steel, mould steel is carried out using vacuum induction melting technique and electroslag remelting process
Melting obtains mold rod iron；
Step 2, finishing processing is carried out to the mold rod iron that step 1 obtains, obtains electrode bar；
Step 3, the electrode bar first obtained step 2 is fitted into the PREP powder manufacturing apparatus in reaction chamber, is taken out later to reaction chamber true
Sky finally pours inert gas into reaction chamber；
Step 4, fusing and centrifugal action are carried out to electrode bar using PREP powder manufacturing apparatus, obtains mould steel spherical metal after cooling
Powder；
Step 5, under the protection of inert gas, mould steel globular metallic powder obtained is sieved and is packed.
2. the increasing material manufacturing according to claim 1 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 2: the diameter of the electrode bar is 10mm-100mm, length 600mm-800mm, and roundness deviation is less than
0.05mm, straightness deviation are less than 0.1mm/m, and roughness is less than 1.5 μm.
3. the increasing material manufacturing according to claim 2 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 3,10 are evacuated to reaction chamber-3Pa-10-2Pa。
4. the increasing material manufacturing according to claim 3 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 3, after pouring inert gas into reaction chamber, reacting indoor pressure is 0.01MPa-1MPa.
5. the increasing material manufacturing according to claim 4 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 3, the oxygen content in the inert gas is less than 0.1wt%.
6. the increasing material manufacturing according to claim 5 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 4, the revolving speed that electrode bar carries out centrifugal action in the PREP powder manufacturing apparatus is 10000r/min-20000r/
min。
7. the increasing material manufacturing according to claim 6 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 4, the power of the plasma gun in the PREP powder manufacturing apparatus is 100kW-300kW.
8. the increasing material manufacturing according to claim 7 preparation method of mould steel globular metallic powder, which is characterized in that
In the step 4 and the step 5, the inert gas is the one or more of helium, argon gas or helium argon.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618301A (en) * | 2020-06-05 | 2020-09-04 | 西安建筑科技大学 | Process for preparing medium carbon steel by selective laser melting |
| CN112191857A (en) * | 2020-12-04 | 2021-01-08 | 西安欧中材料科技有限公司 | Method for preparing iron-based powder by using high-energy-density plasma rotating electrode |
| CN113560590A (en) * | 2021-07-22 | 2021-10-29 | 湖南顶立科技有限公司 | Preparation method of steel powder for remanufacturing and steel powder |
| CN113787189A (en) * | 2021-11-16 | 2021-12-14 | 西安欧中材料科技有限公司 | Steel spherical powder of die for additive manufacturing and recycling method thereof |
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| CN111618301A (en) * | 2020-06-05 | 2020-09-04 | 西安建筑科技大学 | Process for preparing medium carbon steel by selective laser melting |
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| CN113560590A (en) * | 2021-07-22 | 2021-10-29 | 湖南顶立科技有限公司 | Preparation method of steel powder for remanufacturing and steel powder |
| CN113787189A (en) * | 2021-11-16 | 2021-12-14 | 西安欧中材料科技有限公司 | Steel spherical powder of die for additive manufacturing and recycling method thereof |
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Application publication date: 20190416 |