CN105339112B - Surface treatment method for powdered metal material - Google Patents
Surface treatment method for powdered metal material Download PDFInfo
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- CN105339112B CN105339112B CN201480035621.1A CN201480035621A CN105339112B CN 105339112 B CN105339112 B CN 105339112B CN 201480035621 A CN201480035621 A CN 201480035621A CN 105339112 B CN105339112 B CN 105339112B
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- metal material
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
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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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
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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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/045—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by other means than ball or jet milling
-
- 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
- B22F2207/00—Aspects of the compositions, gradients
- B22F2207/11—Gradients other than composition gradients, e.g. size gradients
- B22F2207/13—Size gradients
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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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/05—Light metals
- B22F2301/052—Aluminium
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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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/10—Copper
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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
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Powder Metallurgy (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Provided is a surface treatment method for safely, simply and quickly improving a powdered metal material to be used as a material in powder metallurgy, thermal spraying, or the like. The present invention involves: using a blast-machining device equipped with a dust collection means for spraying a spray powder and compressed air inside a work space and causing the same to collide with a collidable object, and removing and recovering dust by aspirating the interior of the work space; performing a blast treatment for repeatedly causing collisions at a spraying speed of 100-300 m/sec between a powdered metal material having an average particle diameter of 10-200[mu]m, and a medium material having a hardness equal to or greater than that of the powdered metal material; and detaching a surface oxide from the powdered metal material, and forming a fine-grain region which is near the surface of the powdered metal material and has a finer grain size than that of the center section thereof. The sintered metal obtained by sintering the powdered metal material subjected to the surface treatment has a concordant composition in which the fine-grain region and the large-grain region are concordantly arranged, and exhibits a balance of high ductility and high strength.
Description
Technical field
The present invention relates to a kind of surface treatment method of powdered metal material, more specifically, the present invention relates to a kind of
When the manufacture as the metallic article for carrying out having used metal dust such as the powder metallurgy such as sintering or meltallizing or the formation of envelope
Material powdered metal material surface treatment method.
Background technology
As one kind of powder metallurgy, by the aggregation of powdered metal material so that the temperature less than fusing point is heating and curing
" sintering " for obtaining sintering metal is widely used in the manufacture of the various machine components such as gear, especially in recent years, also proposes to use
Powdered metal material also proposes in a particular pattern to irradiate laser beam or electron beam as the appearance material in 3D printer
It is sintered in powdered metal material, thus can directly utilizes metal material, the three-dimensional needed for the shaping of the shape datas such as CAD
Stereomodel (non-patent literature 1), thus by powdered metal material sintering manufacture three-dimensional stereo model with it is existing
The resinous model manufactured by 3D printer is different, can not only expect the purposes as model or sample, also can expect by
It is used as the part that direct-assembling enters machinery etc..
However, the sintering metal for powdered metal material being sintered and being obtained is because producing the reason such as remaining pore, and carry out
The situation of melt-shaping is compared, and low-density, low-intensity is easily formed, if the state, then as machine components etc. intolerant to reality
Situation is also more.
Therefore, by remove it is this kind of cause low-density, low intensive remaining pore for the purpose of, also enter to be about to obtained sintering
The process for being referred to as " sintering forging " that metal is forged, if but as described above, for the simplicity by using 3D printer is stood
The part of body appearance manufacture, needs further exist for the process of sintering forging, then lose the advantage of simplicity.
It is different from the process afterwards of such as above-mentioned sintering forging, by studying intensively the powdery metal as the raw material for sintering
The composition of material or construction and seek the research of the high intensity of sintering metal also iterative method, as one of them, also report
The mechanical lapping for implementing to be carried out by the stirring of ball mill by the powdered metal material before to being sintered is processed, and changes material
The internal structure of material, thus can obtain the sintering metal (non-patent literature 2,3) of high intensity.
In the method, by carrying out mat ball milling to the powdered metal material with specific crystal structure such as Fig. 6 (A) Suo Shi
The mechanical lapping of machine is processed, and powdered metal material is concentrated and implements superpower processing, and as shown in Fig. 6 (B), in powdery metal
The near surface of material produces the region of the referred to as shell that crystal grain Jing miniaturizations are formed and (below the region is referred to as into " microfine
Region "), the region for being derived from possessing the central part for being referred to as core for maintaining former crystallization particle size (below, the region is referred to as
" thick grain region ") and cover the thick grain region above-mentioned microfine region powdered metal material.
Also, by the way that so the powdered metal material for being formed with thick grain region and microfine region is sintered,
The available microfine region with powdered metal material as shown in Fig. 6 (C) of metal for being obtained links each other and is formed
Metal (this of the construction for being referred to as " coordinating tissue " of the thick grain regional coordination ground configuration in reticular tissue and the microfine region
In invention, this kind of metal is referred to as into " coordination tissue metal "), with regard to this kind of coordination tissue metal, report has maintenance and uses not
The sintering metal for carrying out the uniform isometry grain tissue that the common powdered metal material of mechanical lapping process is obtained is equal
Ductility, and while obtain increasing substantially (non-patent literature 2) for intensity.
Furthermore, it is described above in, enumerate as a example by the situation carried out by " sintering " to the system of above-mentioned " coordination tissue metal "
The method of making is illustrated, but with regard to the above-mentioned powdered metal material for possessing microfine region so as to by " meltallizing " in base
When the surface of material forms the situation of metal envelope, formed metal envelope can also become " coordination tissue metal ".
[non-patent literature 1] " spy's collection 2-3D printers | it is fascinating！| " design, manufacture method exhibition " report resin,
The appearance such as paper, metal material variation " [Nikkei BP corporation issues " Nikkei manufactures August number " (issue date：On August 1st, 2013) the
Page 64～68]；
[non-patent literature 2] maltosemalt sugar mountain favour, critical point reach and also " have concurrently by coordinating high intensity, the high extension that organizational controls are obtained
Property innovation structure material initiative " [the heat treatment technics association distribution of Japan of general civic organization " heat treatment material and surface
Modification Vol.53 NO.1 2013 " (the issue date：On 2 28th, 2013) page 1～2]；
[non-patent literature 3] " the 3 times of cutting swarfs shapings of regeneration pyrite hardness, sintering day big new technique improve conductivity towards
It is practical " [daily magazine industry report (on April 30th, 2013)].
The content of the invention
As non-patent literature 2,3 is introduced, in being entered using the powdered metal material of the stirring for entering ball mill of passing through in advance
During the situation of row sintering, the sintering metal obtained by sintering becomes " coordinate tissue ", is derived from possessing and has high ductibility concurrently
And the metal of the excellent specific property of high intensity.
However, as described in non-patent literature 2,3, in the situation of the process that powdered metal material is carried out using ball mill
When, treatment effeciency extreme difference, used as one, the process time in non-patent literature 2 becomes 100 hours, the place in non-patent literature 3
The reason time becomes 32 hours.
Also, the process of the powdered metal material carried out by ball mill has the worry of dust explosion, it is extremely hazardous
Operation.
That is, the powdered metal material for sintering etc. is usually the fine person of 100 μm or so of particle diameter, therefore is put into ball
In grinding machine, the stirring in the presence of air applies frictional force or impulsive force, if also, producing because of the quiet of generation that rub during stirring
, then there is dust explosion in the electric discharge of electricity.
Herein, dust explosion can be in the generation of the dust more than presence of oxygen, concentration of lower explosive limit and the presence of ignition source
Three key element oligomerisations when occur, therefore when the situation that dust explosion to be prevented, it is necessary to remove one of these conditions with
On, but in order to implement superpower processing to powdered metal material, it is impossible to from the internal ball mill for producing frictional force, impulsive force
Removal can become the generation of friction or the impact of ignition source.
Therefore, when the situation of dust explosion to be prevented, it is necessary to be full of the inside of ball mill using noble gases etc., in
Excluding carries out operation in the state of oxygen, or the input amount of powdered metal material is adjusted to not up to concentration of lower explosive limit, or real
Apply the rwo.
If however, being processed in the state of using noble gases ball grinder interior is full of, manufacturing cost becomes
It is substantially increased, also, the concentration of lower explosive limit for considering powdery metal [200 meshes (74 μm of aperture) all pass through] is calculated as with aluminum
35g/m3, 45g/m is calculated as with titanium3, 120g/m is calculated as with ferrum3[pluck selected from " safety of arc welding operation and health the (the 3rd
It is secondary) " general civic organization Japan welding association WE-COM magazines the 6th (in October, 2012 distribution)], if being intended to dense in LEL
Degree below be stirred, then can only process very small amount every time, even if if a small amount of production of the experimental level of research department and can locate
Reason, can not possibly also utilize ball mill to process a large amount of powdered metal materials for coordinating commercial reference.
Even if also, the process of powdered metal material can will be applied to above by the process of ball mill, in utilizing the party
In the powdered metal material that method was processed, the surfaces such as the oxide skin of sur-face peeling from powdered metal material are mixed
Oxide, the oxide becomes the obstruction that powdered metal material is bonded to each other when sintering, hinders high intensity.
That is, the powdered metal material for sintering or meltallizing is generally manufactured by atomization, in the atomization, makes to melt
Melt metal spray, disperse and micronized so as to moment chilling, solidification, manufacture powdered metal material, therefore in powdery metal material
The surface attachment of material has oxide skin.
Also, with regard to the powdered metal material using the method manufacture beyond atomization, though there is the difference of degree, also through
Contact with the oxygen in air and form the oxide-film as oxide on surface.
Even if the oxide on surface such as this kind of oxide skin are because of friction or impact suffered during the stirring of ball mill from powder
The sur-face peeling of metal material, for the construction aspect of ball mill, the oxide so peeled off also will not be gone after stripping
Remove, and be mixed in powdered metal material.
Also, stripped oxide is also stirred in the lump with powdered metal material thereafter in ball mill, therefore Jing is shelled
From the part of oxide be pressed against the surface of powdered metal material because of friction or impact caused by stirring institute, and buried
Enter etc. and adhere to again.
Therefore, in the powdered metal material processed using ball mill is directly taken out and be used for sinter situation when,
Cause is mixed the presence of the oxide in powdered metal material, and the raising of intensity is suppressed.
On the other hand, in order to remove the oxide being mixed in powdered metal material, also consider to by ball milling
Powdered metal material after the process of machine carries out such as wind filter etc., in the method, except by the process of ball mill with
Outward, and then need to arrange the step to remove oxide in addition, productivity is further reduced.
And, in the method, for the oxide being mixed in powdered metal material, even if can be in certain journey
Remove on degree, cannot also the oxide for being again attached to the surface of powdered metal material be separated, removed.
Therefore, if carrying out at the surface of powdered metal material using the method that can also remove this kind of surface film oxide
Reason, then can expect the further high intensity of obtained coordination tissue metal.
Therefore, the present invention is that shortcoming in order to eliminate above-mentioned background technology is formed, and its object is to provide a kind of powder
The surface treatment method of metal material, worry of the method without dust explosion easily and can be carried out positively from sur-face peeling oxygen
Compound removes the oxide after peeling off, and can be efficiently carried out at as by powder such as sintering with the relatively short time
The methods such as last metallurgical or meltallizing obtain the powdery metal material of material when possessing the metallic article or metal envelope for coordinating tissue
The surface of material forms the process in above-mentioned microfine region.
In order to reach above-mentioned problem, the surface treatment method of the powdered metal material of the present invention is used as microfine region
With the surface treatment method of the powdered metal material of the manufacture of the coordination tissue metal of thick grain regional coordination configuration, its feature
It is：
Using possessing the peening processing unit (plant) that has dust means, the dust means be in working space will injection powder body with
Compressed gas are sprayed in the lump so as to which dust is removed, returned by collision by collision thing to being aspirated in above-mentioned working space
Receive,
Enter to exercise the powdered metal material of 10～200 μm of mean diameter and with equal with above-mentioned powdered metal material
The media material of hardness above is processed with the peening of jet velocity 100～300m/sec impact several times, thus from above-mentioned powder
Shape metal material peels off oxide on surface, and the near surface in the powdered metal material is formed with relative to central part
The less crystallization particle diameter of crystallization particle diameter microfine region (claim 1).
As the above-mentioned peening processing unit (plant) processed for above-mentioned peening, possessed above-mentioned dust using above-mentioned dust means
With cyclone separator person (claim 2) of above-mentioned injection particle classifying.
Further, in the above-mentioned dust means of above-mentioned peening processing unit (plant), by recovered dust and such as Calcium Carbonate etc.
Noninflammability powder is stored (claim 3) in the lump.
In the surface treatment method of the powdered metal material of above-mentioned composition, above-mentioned peening is processed can be by above-mentioned powder
Metal material is set to above-mentioned injection powder body, and above-mentioned media material is set to above-mentioned to carry out (claim 4) by collision thing.
Above-mentioned media material also can make above-mentioned injection powder body as powder body, and by above-mentioned powdered metal material
(claim 5) is carried out by collision thing as above-mentioned.
Further, also can by above-mentioned media material be set to have and above-mentioned powdered metal material identical material and identical
The powdered metal material of mean diameter, and above-mentioned injection powder body is set to into above-mentioned powdery metal material with above-mentioned by collision thing
Expect and carry out (claim 6).
Furthermore, the material of above-mentioned media material can be set to the hardness for having more than equal with above-mentioned powdered metal material
Metal, also, can also be set to the pottery with the hardness more than equal with the hardness of the powdered metal material after above-mentioned surface treatment
Porcelain (claim 7).
Composition of the invention from the description above, by the surface treatment method of the powder shaped metal material of the present invention,
Following remarkable result can be obtained.
By enter to exercise 10～200 μm of mean diameter powdered metal material and with above-mentioned powdered metal material
The media material of the hardness more than equal is processed with the peening of jet velocity 100～300m/sec impact several times, powdery metal
The oxide on surface of material is removed, and the rapidly temperature produced near surface when collision rises and cooling is entered repeatedly
OK, thus the crystal grain of the near surface of powdered metal material is micronized, thus using the relatively easy of peening processing
Method easily and in the short time it is a large amount of process be formed near surface it is less with the crystallization particle diameter relative to central part
Crystallization particle diameter microfine region powder shaped metal material.
Also, carry out above-mentioned peening processing by using the peening processing unit (plant) of subsidiary dust collection function, it is to avoid dust explosion
Danger, while volume production can be carried out, and by the suction in working space by from the sur-face peeling of powdered metal material
The oxide on surface such as oxide skin are removed as dust, reclaimed, and thus can not in addition be arranged in subsequent step and be removed surface oxidation
The step of thing and obtain the powdered metal material being mixed into without oxide on surface.
Especially possess the cyclone separator person of above-mentioned dust and above-mentioned injection particle classifying used in processing in peening
As dust means situation when, what the state being mixed with powdery metal powder body and stripped oxide on surface was reclaimed
During situation, also oxide on surface can be obtained from wherein oxide on surface is reclaimed with dust in the lump self-injection particle classifying
The powdered metal material for more precisely being removed.
Further, in the dust means of above-mentioned peening processing unit (plant), the noninflammability powder such as the dust that Jing is removed and Calcium Carbonate
During the situation that end is stored in the lump, the danger of the indoor dust explosion of processing, the danger of the dust explosion in precipitron can be not only reduced
Danger also can reduce.
With regard to the peening processing, powdered metal material can be set to injection powder body and media material is sprayed so as to
Etc. being collided, or, also media material can be set to spray powder body and powder shaped metal material is sprayed so as to which waiting is carried out
Collision, in the powdered gold for being set to be set to be made up of identical mean diameter and phase same material by injection powder body and by both collision things
Category material, to powdered metal material pulverized powder shape metal material so as to when waiting the situation of the composition collided, to being set to
Spray the powdery metal powder body of powder body and be set to be collided both powdery metal powder body of thing while being surface-treated, therefore
Treating capacity can be made to double.
Description of the drawings
Fig. 1 is the outline figure of the peening processing unit (plant) of the surface treatment method for the present invention, (A) is gravity type,
(B) it is direct press type.
Fig. 2 is the chart of the X-ray diffraction result for representing untreated powder of stainless steel (product equivalent to SUS304).
Fig. 3 is that the X for representing the powder of stainless steel (product equivalent to SUS304) processed using the method for embodiment 1 is penetrated
The chart of line diffraction result.
Fig. 4 is the figure of the X-ray diffraction result for representing untreated powder high-speed tool steel (product equivalent to SKH)
Table.
Fig. 5 is the X for representing the powder high-speed tool steel (product equivalent to SKH) processed using the method for embodiment 2
The chart of ray diffraction result.
Fig. 6 is the explanatory diagram of the generation for illustrating to coordinate tissue, is (A) untreated powdered metal material, is (B) to pass through
Powdered metal material after ball mill process, (C) the coordination tissue gold for the powdered metal material of (B) sintering is obtained
The ideograph of category.
Specific embodiment
Secondly, for embodiment of the present invention, simultaneously with accompanying drawing reference, simultaneously in following explanation.
[being monolithically fabricated]
The present invention is as follows：Using known peening processing unit (plant), enter to exercise the powdery metal material as process object
Material and the media material collided with above-mentioned powdered metal material are processed with the peening of specific jet velocity impact several times, thus
The oxide on surface such as the oxide skin of intensity raising are hindered when removing in sintering or meltallizing from the surface of powdered metal material, and
It is intended to be formed with the less crystallization particle diameter of crystallization particle diameter relative to central part in the near surface of the powdered metal material
Microfine region.
Thus, be used in central part and forming the larger thick grain region of crystallization particle diameter, being formed relative to thick near surface
The powdered metal material in the less microfine region of big grain region crystallization particle diameter, is obtained using methods such as the powder metallurgy such as sintering
Metallic article or the metal envelope that manufactured by meltallizing there is the microfine for being bonded to each other and being formed in microfine region to organize
Net in coordinate to be configured with the crystal structure [with reference to Fig. 6 (C)] in thick grain region, become with having high ductibility and height concurrently
The coordination tissue metal of the excellent specific property of intensity.
[powdered metal material]
Powdered metal material in the present invention as process object is the material as powder metallurgy such as sintering or during meltallizing
The mean diameter of material is 10～200 μm of powder shaped metal, as long as the material person to be applicable to powder metallurgy or meltallizing, then may be used
Can be by any one constitutor of simple metal, alloy using various material persons.
Used as one, being generally used for the metal of powder metallurgy can enumerate ferrum system, copper system, rustless steel system, titanium system, the gold of tungsten system
Category, also, the metal for meltallizing is usually zinc, aluminum, copper etc., in the present invention, these any one can contain in powdered gold
In the material of category material.
The powdered metal material for being used can be used using the manufacture of various methods, except by being used as in powder metallurgy
Or outside the nebulization representated by the atomization of the manufacture method of the powdered metal material being usually used in meltallizing, can be using machinery
The known various methods manufactures such as broken, electrolysis precipitation.
The shape of powder body can be spherical, but be not limited to this, can use variously-shaped person.
Furthermore, the crystallization particle diameter of the powdered metal material of before processing is directly becoming the crystal grain in above-mentioned thick grain region
Footpath, therefore when the crystallization particle diameter in thick grain region is set to into the situation in particular range, select the powder of corresponding crystallization particle diameter
Shape metal material.Though being not particularly limited, used as one, the average crystallite particle diameter in thick grain region is several μm～tens of μm.
[media material]
As the media material collided with above-mentioned powdered metal material, as long as being with equal with powdered metal material
Hardness above, then various persons can be used, can be not only metal person, can also use ceramic person.
Furthermore, when the situation of the media material using the ceramic for not being processed hardening, preferably use and have and enter
The ceramics of the equal hardness above of hardness of the powdered metal material after the surface treatment of the row present invention, make powdery metal material
Expect also to maintain the hardness more than equal after processing hardening.
Also, also media material itself can be constituted by using above-mentioned powdered metal material, and utilize powdery metal material
Expect mutual collision, above-mentioned Chao Wei sappy structures are formed on both powdered metal materials.
With regard to the shape of media material, when media material side to be used as the situation of injection powder body, it is necessary to by it with powder
The form of body is constituted, but when the situation for being processed above-mentioned powdered metal material as injection powder body, media material without
Powder body need to be made, also be can be made into for example with the morphosiies person such as plate body.
[peening processing method and peening processing unit (plant)]
Powdered metal material described above and the peening that the collision of media material is by using peening processing unit (plant)
Process and carry out.
As the peening processing, as described above, powdered metal material can be set to spray powder body, by it towards vehicle
Matter injection is collided, also can be conversely, the media material of preparation powder shaped, is set to spray powder body to powdered metal material
Injection collided, and then, can also make injection powder body, by collision thing both of which to be made up of identical mean diameter, phase same material
Powdered metal material constitute, make powdered metal material impinging one another.
As the peening processing unit (plant) 1 for being used, if with the rack 21 for becoming Processing Room and to entering in the rack 21
Row suction and the peening processing unit (plant) of the attached dust collection function of dust, then can use known various constitutors, can using direct press type,
Any one peening processing unit (plant) of gravity type.
Fig. 1 (A) will be illustrated in for the composition of the peening processing unit (plant) 1 of the gravity type of the surface treatment of the present invention, will be straight
The composition of pressure type is illustrated in Fig. 1 (B).
Hereinafter, these peening processing unit (plant)s 1 are just used, and to spraying powder body and using identical material by collision thing both of which
Matter, the powdered metal material of identical mean diameter and the example of surface treatment that carries out the present invention is illustrated, but for this
The peening processing unit (plant) 1 of the surface treatment method of invention is not limited to the constitutor for illustrating.
Peening processing unit (plant) 1 shown in Fig. 1 (A), (B) possesses：Housing spray nozzle 22 and machined object carries out peening processing
The rack 21 for becoming Processing Room and the precipitron 38 to being aspirated in the rack 21, by the precipitron 38 and rack
The accumulator tank 23 of cyclonic separation type is set between 21, by aspirated in rack 21 reclaimed in existing with mix dust
The powdered metal material of state be recycled in accumulator tank 23, and can by the accumulator tank 23 of cyclonic separation type from powder
The detached dust of shape metal material is recovered in precipitron 38.
Also, the powdered metal material being so recycled in accumulator tank 23 be with can again from rack 21 spray nozzle
The mode of 22 injections is constituted.
In the inside for above-mentioned rack 21 and the front end direction of spray nozzle 22 front, be provided with injection powder body injection in
The upwardly opening accepting container of rotation expects cage (バ レ Le カ go) 24, and it is will can become by the powdery metal of collision thing
Material puts into mode therein and is formed.
In example shown in Fig. 1 (A), material cage 24 is expressed as being formed with the netted person of metal wire of multiple apertures, but not
The example of diagram is defined in, the constitutor for not possessing this kind of aperture can be also set to.
If in carrying out using the before processing of peening processing unit (plant) 1 configured as described above, powder is put in accumulator tank 23
Metal material, and in powdered metal material is also put in the indoor material cage 24 of processing, simultaneously material cage is made with the state
24 rotations, a face self-spray mouth 22 with the injection of jet velocity 100～300m/sec start powder shape metal materials, then self-spray
The powdered metal material of the injection of mouth 22 is collided with the powdered metal material in the material cage 24 of rotation.
Can be more than 100m/sec in the process of the powdered metal material of non-ferric system, in ferrum system with regard to injection pressure
Powdered metal material process in be preferably set to more than 150m/sec.
By the injection for so carrying out powdered metal material, the powdered metal material and self-spray mouth 22 in cage 24 is expected
The powdered metal material of injection receives respectively energy during mutually collision, the oxygen on the surface for making to be formed at powdered metal material
Change the oxide on surface such as skin to peel off, also, in the surface of collision part, the rapid rising of temperature and cool down, thus collide part table
The crystal grain in face is micronized, and in the near surface of powdered metal material microfine region is formed, and the microfine region is formed
There is the crystal grain that the crystal grain relative to middle body is path.
With regard to the miniaturization of powdered metal material, in the powdered metal material as process object not up to 100 μm
During situation, formed with the depth for being 20% or so to the maximum relative to particle diameter in the surface of powdered metal material, in as process
When the powdered metal material of object is more than 100 μm of situation, formed with the depth for being 10% or so to the maximum relative to particle diameter
Situation obtain empirical confirmation, therefore using the powdered metal material of 10～200 μm of mean diameter as process object this
In bright surface treatment method, according to the particle diameter of the powdered metal material as process object, in maximum away from 2～20 μm of surface
Scope form above-mentioned microfine region.
Powdered metal material collision rift in the powdered metal material and material cage 24 of the injection of self-spray mouth 22, removes bullet
Go out to the material epigenesist of cage 24, reside in material cage 24, with rotation and the powdered gold being originally present in material cage 24 of material cage 24
Category material is stirred in the lump.
Therefore, if self-spray mouth 22 continues the injection of powdered metal material, the powdered metal material in cage 24 is expected
Increase, overflow from material cage 24, fall to the bottom of rack 21.
The bottom of rack 21 is formed as the loading hopper of inverted trapezoidal, and the lower end of loading hopper via air draft path 33, recovery
Groove 23 is connected with precipitron 38, if therefore being dropped to aspirating in rack 21 by the air exhausting device 39 located at precipitron 38
Powdered metal material or dust are sucked in the lump with the air in rack 21, and give to the accumulator tank 23 of cyclonic separation type
It is interior, dust and powdered metal material are classified in the accumulator tank 23, powdered metal material is recovered to accumulator tank
Lower section in 23.
Result from the oxide on surface such as the oxide skin on the surface of powdered metal material compared with powdered metal material, firmly
Degree is high and fragile, therefore when peeling off, is broken for tiny shape in impacting caused by the mutual collision institute because of powdered metal material, therefore
It is not recycled in accumulator tank 23, and precipitron 38 is delivered to via the pipe 32 on the top for being connected to accumulator tank 23 as dust, to collection
Lower section aggregation in dirt machine 38, discharges in making the air of cleaning from air exhausting device 39 to outside atmosphere.
Thus, the processing interior being formed in rack 21 is aspirated always, by the dust swum in air or powder
Shape metal material is removed and suppressed below concentration of lower explosive limit, even if therefore producing as powdery metal material in the present embodiment
Heat release or electrostatic caused by injection, collision, the friction institute of the injection powder body of material, also without the melancholy that dust explosion occurs in rack
Consider.
On the other hand, it is classified using the accumulator tank 23 of cyclonic separation type and is recycled to the dust and noninflammability of precipitron 38
The powder of powder such as Calcium Carbonate is contained in the lump in precipitron 38, so that the combustible dust in the air in precipitron 38
Concentration becomes below concentration of lower explosive limit, thus also avoids the danger of the dust explosion in precipitron 38.
Also, be recycled to the powdered metal material in above-mentioned accumulator tank 23 again self-spray mouth 22 to material cage 24 in powder
Last shape metal material injection, by repeat the above steps, from tables such as the equal scale removals in the surface of arbitrary powdered metal material
Face oxide, and microfine region is formed in the overall mode for covering near surface.
As previously discussed, with regard to being formed with the powdered metal material in microfine region near surface, if being used as
The material of the powder metallurgy such as sintering, or for the formation of the metal films such as meltallizing, then with regard to the sintering metal that obtained or metal
Envelope, can be attained in the net of the microfine tissue that the part in microfine region interlinks and formed and coordinate to be configured with thick
The coordination tissue metal in big grain region.With regard to this kind of coordination tissue metal, can obtain and have the excellent of high ductibility and high intensity concurrently
Characteristic.
It is strong when sintering or welding due to becoming especially with respect to the powdered metal material processed using the method for the present invention
The oxide on surface such as the oxide skin of the reason for degree is reduced also preferably are removed, therefore can seek obtained sintering metal or metal quilt
The further high intensity of film.
Furthermore, it is described above in, just injection powder body and powdered metal material is become by collision thing, and located at machine
Carry out spraying powder body and being illustrated by the composition of the collision of collision thing in material cage 24 in cabinet 21, also can for example replace above-mentioned
Material cage 24, the plate body formed by the material with the hardness more than equal with injection powder body is housed in the rack 21 as vehicle
Matter, is set to powdered metal material injection powder body and the plate body is sprayed so as to wait and collided, thus carry out the present invention
Surface treatment.
Also, also using the above-mentioned peening processing unit (plant) 1 for possessing material cage 24 media material of powder shaped can be set to spray powder
Body, sprays as the media material for spraying powder body devoting the powdered metal material in material cage 24, when the situation, processes
Powdered metal material and media material are classified afterwards, are each reclaimed.
[embodiment]
Hereinafter, the embodiment of surface treatment method just of the invention to the powdered metal material application of various materials is carried out
Explanation.
[embodiment 1]
To as the stainless powder (product equivalent to SUS304 of powdered metal material：#80) implement the present invention
Surface treatment method.Treatment conditions are shown in into table 1 below.
[table 1]
Treatment conditions in embodiment 1 (SUS304)
In the indoor material cage input 10kg powder of stainless steel of the processing located at peening processing unit (plant), in accumulator tank 20kg is put into
Powder of stainless steel, with the condition shown in above-mentioned table 1, enters the powder of stainless steel self-spray mouth court being about in accumulator tank for continuous 3 hours
The process of injection in material cage.
The result of above-mentioned process is that oxide skin Jing of the powder of stainless steel after processing is removed, and surface becomes clean, and locates
The hardness of the powder of stainless steel before reason for 250～350HV rises to 450～550HV after process, thus predicts near surface
Crystal grain miniaturization.
Also, can be by Scherrer (Scherrer, 1918) formula, according to the increase evaluation crystallization of the live width of X-ray diffraction peak
The miniaturization of particle diameter, as a result relative to the X-ray diffraction result (with reference to Fig. 2) of untreated powder of stainless steel, in the application's
In X-ray diffraction result (Fig. 3) after process, the live width at peak significantly increases, and the hardness of above-mentioned powdered metal material rises, and
And also confirm the miniaturization of the crystallization particle diameter on surface according to X-ray diffraction result.
[embodiment 2]
To as the powder high-speed tool steel (product equivalent to SKH of powdered metal material：#150) implement the present invention
Surface treatment method.Treatment conditions are shown in into table 2 below.
[table 2]
(the powder high-speed tool steel of embodiment 2：Product equivalent to SKH) in treatment conditions
In the indoor material cage input 10kg powder high-speed tool steels of the processing located at peening processing unit (plant), in accumulator tank input
10kg powder high-speed tool steels, with the condition shown in above-mentioned table 2, enter the powder high-speed tool being about in accumulator tank in continuous 5 hours
The process that steel self-spray mouth sprays towards in material cage.
As a result, before processing is the hardness of the powder high-speed tool steel of 650～750HV rises to 900 after process～
1000HV。
Also, oxide skin Jing of the powder high-speed tool steel after processing is removed, surface becomes clean, and according to X-ray around
Result is penetrated, relative to untreated person (with reference to Fig. 4), the live width increase (with reference to Fig. 5) of X-ray diffraction peak, this can be identified through
The process of bright method, the miniaturization of surface texture Jing (with reference to Fig. 4,5).
[embodiment 3]
Powder (the product equivalent to SCM to the mechanical realization steel alloy as powdered metal material：It is #150) real
Apply the surface treatment method of the present invention.Treatment conditions are shown in into Table 3 below.
[table 3]
Treatment conditions in the powder (product equivalent to SCM) of the mechanical realization steel alloy of embodiment 3
The powder of 10kg mechanical realization steel alloys is put in the indoor material cage of the processing located at peening processing unit (plant), in returning
The powder that groove puts into 10kg mechanical realization steel alloys is received, with the condition shown in above-mentioned table 3, enters to be about to accumulator tank within continuous 5 hours
The process that the powder self-spray mouth of interior mechanical realization steel alloy sprays towards in material cage.
As a result, before processing is the hardness of the powder of the mechanical realization steel alloy of 150～200HV rising after process
To 300～350HV.
Also, it is believed that oxide skin Jing of the powder of the mechanical realization steel alloy after processing is removed, surface becomes clean, and
And by the rising of above-mentioned hardness, in surface the tissue of Jing miniaturizations is formed.
[embodiment 4]
The surface treatment method of the present invention is implemented to the powder (#150) of the copper alloy as powdered metal material.Will place
Manage bar part is shown in table 4 below.
[table 4]
Treatment conditions in embodiment 4 (copper alloy)
20kg copper alloy powders are put in accumulator tank, following process is carried out within continuous 7 hours：By the copper alloy powder in accumulator tank
Last self-spray mouth offsets in core towards the center of the plate (φ 400mm, thickness 20mm) by the SKD11 for being configured at processing interior
The position injection of 100mm.
As a result, the hardness that before processing is the copper alloy powder of 160～200HV rise to 220 after process～
260HV。
Also, it is believed that oxide skin Jing of the copper alloy powder after processing is removed, surface becomes clean, and by above-mentioned hard
The rising of degree, in surface the tissue of Jing miniaturizations is formed.
[embodiment 5]
Powder (AC8A to the aluminium alloy as powdered metal material：#80) implement the surface treatment method of the present invention.
Treatment conditions are shown in into table 5 below.
[table 5]
Treatment conditions in the aluminium alloy of embodiment 5 (AC8A)
The material cage for being formed with the hole of multiple diameter 1mm is indoor located at processing, 10kg aluminium alloys are put in the material cage
(AC8A) powder, and enter within continuous 7 hours the ejecta for being about to devote the high speed steel in accumulator tank towards spray in material cage
The process penetrated.
Above-mentioned process as a result, before processing is the hardness of the powder of the aluminium alloy of 120～140HV rises to after process
200～250HV.
Also, it is believed that oxide skin Jing of the powder of the aluminium alloy after processing is removed, surface becomes clean, and by above-mentioned
The rising of hardness, permeates as the composition of the high-speed steel of media material in the diffusion into the surface of the powder of aluminium alloy, and in surface
Form the tissue of Jing miniaturizations.
[sintering test result]
More than, the powder for carrying out processing using the surface treatment method of the invention by illustrating as embodiment 1～5
Shape metal material, carries out the plasma-based sintering that discharges.
As a result, confirming that the sintering metal for obtaining arbitrary powdered metal material sintering of embodiment 1～5 has
Coordinate " the coordinating tissue " for being configured with thick grain tissue in the net that microfine region interlinks and formed, it is of the invention
Surface treatment method is can be to simple for the powdered metal material of coordinating the manufacture of tissue metal and in a large number and safely enter
The surface treatment method that row is processed.
Symbol description
1：Peening processing unit (plant)
21：Rack
22：Spray nozzle
23：Accumulator tank (cyclonic separation type)
24：Material cage
32：Pipe
33：Air draft path
38：Precipitron
39：Air exhausting device.
Claims (15)
1. a kind of surface treatment method of powdered metal material, is used as what microfine region and thick grain regional coordination were configured
Coordinate the surface treatment method of the powdered metal material of the manufacture material of tissue metal,
Using possessing the peening processing unit (plant) that has dust means, the dust means are will injection powder body and compression in working space
Gas sprays in the lump so as to which dust is removed, reclaimed by collision by collision thing to being aspirated in the working space,
Enter to exercise the powdered metal material of 10～200 μm of mean diameter and with more than equal with the powdered metal material
The media material of hardness is processed with the peening of jet velocity 100～300m/sec impact several times, thus from the powdery metal material
Material peels off oxide on surface, and the near surface in the powdered metal material is formed with the crystal grain relative to central part
The microfine region of the less crystallization particle diameter in footpath.
2. the surface treatment method of powdered metal material according to claim 1, wherein, the peening processing unit (plant) should
Dust means possess the cyclone separator by the dust and the injection particle classifying.
3. the surface treatment method of powdered metal material according to claim 1 and 2, wherein, add frock in the peening
In the dust means put, recovered dust is stored in the lump with noninflammability powder.
4. the surface treatment method of powdered metal material according to claim 1 and 2, wherein, by the powdery metal
Material is set to the injection powder body, and the media material is set to into this is collided thing and carry out the peening process.
5. the surface treatment method of powdered metal material according to claim 3, wherein, by the powdered metal material
It is set to the injection powder body, and the media material is set to into this to be collided thing and carry out the peening process.
6. the surface treatment method of powdered metal material according to claim 1 and 2, wherein, the media material is made
The injection powder body is made for powder body, and the powdered metal material is collided into thing as this and the peening process is carried out.
7. the surface treatment method of powdered metal material according to claim 3, wherein, using the media material as powder
Body and make the injection powder body, and the powdered metal material is collided into thing as this and the peening process is carried out.
8. the surface treatment method of powdered metal material according to claim 1 and 2, wherein, the media material is set
It is, with the powdered metal material with the powdered metal material identical material and identical mean diameter, and this to be sprayed
Powder body is collided thing and is set to the powdered metal material with this.
9. the surface treatment method of powdered metal material according to claim 3, wherein, the media material is set to into tool
There is a powdered metal material with the powdered metal material identical material and identical mean diameter, and by the injection powder body
Thing is collided with this be set to the powdered metal material.
10. the surface treatment method of powdered metal material according to claim 1 and 2, wherein, the material of the media material
Matter is the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdered gold
The ceramics of the equal hardness above of hardness of category material.
The surface treatment method of 11. powdered metal materials according to claim 3, wherein, the material of the media material
Be the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdery metal
The ceramics of the hardness more than the hardness of material is equal.
The surface treatment method of 12. powdered metal materials according to claim 4, wherein, the material of the media material
Be the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdery metal
The ceramics of the hardness more than the hardness of material is equal.
The surface treatment method of 13. powdered metal materials according to claim 5, wherein, the material of the media material
Be the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdery metal
The ceramics of the hardness more than the hardness of material is equal.
The surface treatment method of 14. powdered metal materials according to claim 6, wherein, the material of the media material
Be the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdery metal
The ceramics of the hardness more than the hardness of material is equal.
The surface treatment method of 15. powdered metal materials according to claim 7, wherein, the material of the media material
Be the metal with the hardness more than equal with the powdered metal material, or with the surface treatment after powdery metal
The ceramics of the hardness more than the hardness of material is equal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013193254A JP5723942B2 (en) | 2013-09-18 | 2013-09-18 | Surface treatment method for powdered metal materials |
| JP2013-193254 | 2013-09-18 | ||
| PCT/JP2014/074518 WO2015041236A1 (en) | 2013-09-18 | 2014-09-17 | Surface treatment method for powdered metal material |
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| CN105339112A CN105339112A (en) | 2016-02-17 |
| CN105339112B true CN105339112B (en) | 2017-04-19 |
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| CN201480035621.1A Active CN105339112B (en) | 2013-09-18 | 2014-09-17 | Surface treatment method for powdered metal material |
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|---|---|
| US (1) | US20160193658A1 (en) |
| EP (1) | EP3047925B1 (en) |
| JP (1) | JP5723942B2 (en) |
| CN (1) | CN105339112B (en) |
| HK (1) | HK1219075A1 (en) |
| WO (1) | WO2015041236A1 (en) |
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| US20160236422A1 (en) * | 2015-02-13 | 2016-08-18 | Ricoh Company, Ltd. | Device and method for removing powder and apparatus for fabricating three-dimensional object |
| US10913206B2 (en) * | 2015-08-03 | 2021-02-09 | Delavan, Inc | Systems and methods for post additive manufacturing processing |
| JP6848521B2 (en) | 2017-02-24 | 2021-03-24 | セイコーエプソン株式会社 | Compound for metal powder injection molding, manufacturing method of sintered body and sintered body |
| JP6969113B2 (en) | 2017-03-06 | 2021-11-24 | セイコーエプソン株式会社 | Compound for metal powder injection molding, metal powder molded body, manufacturing method of sintered body and sintered body |
| JP6961972B2 (en) * | 2017-03-24 | 2021-11-05 | 富士フイルムビジネスイノベーション株式会社 | Three-dimensional shape molding equipment, information processing equipment and programs |
| TWI638480B (en) * | 2017-10-25 | 2018-10-11 | 國立虎尾科技大學 | Electrode electrode chip process |
| JP7374892B2 (en) | 2018-05-30 | 2023-11-07 | 株式会社東芝 | Metal powder for 3D printers and method for producing shaped objects |
| CN112055627B (en) | 2018-06-08 | 2023-08-11 | 惠普发展公司，有限责任合伙企业 | Powder bed material |
| JP7164163B2 (en) * | 2018-08-24 | 2022-11-01 | 学校法人立命館 | Method for producing carbon-containing iron alloy material and carbon-containing iron alloy material |
| WO2020059059A1 (en) * | 2018-09-19 | 2020-03-26 | 技術研究組合次世代３Ｄ積層造形技術総合開発機構 | Powder for metal additive manufacturing, manufacturing method therefor, additive manufacturing device, and control program therefor |
| CN110284105B (en) * | 2019-06-25 | 2024-02-09 | 郑州航空工业管理学院 | Powder surface metallization method and device |
| JP7470963B2 (en) * | 2020-01-27 | 2024-04-19 | 株式会社不二機販 | Method for strengthening binder metal phase in sintered body |
| CN114535568B (en) * | 2022-02-25 | 2024-05-24 | 安徽工业大学 | Method for efficiently and circularly nanocrystallizing surface of reduced iron powder |
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| JPS63293105A (en) * | 1987-05-27 | 1988-11-30 | Nkk Corp | Production of metal powder |
| JPH0822504B2 (en) * | 1987-06-10 | 1996-03-06 | 日鉱金属株式会社 | How to blast aluminum die cast products |
| JPH0822506B2 (en) * | 1987-06-10 | 1996-03-06 | 日鉱金属株式会社 | Zinc blast shot manufacturing method |
| JPH0761612B2 (en) * | 1988-11-22 | 1995-07-05 | 株式会社不二機販 | Cleaning method of turbine for power generation of boiling water nuclear power plant |
| JP2754680B2 (en) * | 1989-03-17 | 1998-05-20 | 大同特殊鋼株式会社 | Processing method of metal powder |
| JP3049165B2 (en) * | 1993-02-15 | 2000-06-05 | 株式会社不二製作所 | Surface treatment of powder alloy |
| JP3379824B2 (en) * | 1994-06-14 | 2003-02-24 | 株式会社不二機販 | Method of manufacturing surface hardened metal shot |
| JP2978137B2 (en) * | 1997-09-01 | 1999-11-15 | プラストロン株式会社 | Metal surface treatment method and metal material treated |
| JP3730015B2 (en) * | 1998-06-02 | 2005-12-21 | 株式会社不二機販 | Surface treatment method for metal products |
| JP2001225270A (en) * | 2000-02-10 | 2001-08-21 | Fuji Seisakusho:Kk | Sandblasting device, method of classifying grinding/ polishing/cleaning material in the sandblasting device, and dust collecting method in the classifying method |
| JP2007297651A (en) * | 2006-04-27 | 2007-11-15 | Fuji Wpc:Kk | Method for refining crystal grain in surface of hard metal |
| US20080176487A1 (en) * | 2007-01-19 | 2008-07-24 | Armstrong Jay T | Portable cleaning and blasting system for multiple media types, including dry ice and grit |
| JP4719249B2 (en) * | 2008-06-11 | 2011-07-06 | 株式会社不二機販 | Surface oxidation wear-resistant lubricating coating and method for forming the same |
| JP5381045B2 (en) * | 2008-11-26 | 2014-01-08 | 新東工業株式会社 | Method for producing shot peening projection material |
| US8893538B2 (en) * | 2010-12-08 | 2014-11-25 | Fuji Kihan Co., Ltd. | Instantaneous heat treatment method for metal product |
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| Publication number | Publication date |
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| EP3047925A1 (en) | 2016-07-27 |
| CN105339112A (en) | 2016-02-17 |
| JP5723942B2 (en) | 2015-05-27 |
| US20160193658A1 (en) | 2016-07-07 |
| JP2015059236A (en) | 2015-03-30 |
| WO2015041236A1 (en) | 2015-03-26 |
| EP3047925B1 (en) | 2022-04-13 |
| HK1219075A1 (en) | 2017-03-24 |
| EP3047925A4 (en) | 2017-06-07 |
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