CN109311140A - It projects material and has used the surface treatment method of the metal product of the projection material - Google Patents
It projects material and has used the surface treatment method of the metal product of the projection material Download PDFInfo
- Publication number
- CN109311140A CN109311140A CN201780037835.6A CN201780037835A CN109311140A CN 109311140 A CN109311140 A CN 109311140A CN 201780037835 A CN201780037835 A CN 201780037835A CN 109311140 A CN109311140 A CN 109311140A
- Authority
- CN
- China
- Prior art keywords
- projection material
- mentioned
- metal product
- group
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- 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
- B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
-
- 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
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
-
- 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
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Coating With Molten Metal (AREA)
- Coating By Spraying Or Casting (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention provides projection material and has used the surface treatment method of the metal product of the projection material.For being removed in the projection material of the cast steel for the oxide skin that the surface of metal product is formed by blasting treatment, have: first group, it is the projection material group that partial size d1 belongs to first particle size interval d1max >=d1 > d1min, has maximum frequency P1 in the first particle size interval；And second group, it is the projection material group that partial size d2 belongs to second particle size interval d2max >=d2 > d2min, there is maximum frequency P2 in the second particle size interval, the size-frequency distribution of first group of relationship for meeting d1max=d2min with second group, the projection material constituted by first group with second group is substantially continuous.
Description
Technical field
The present invention relates to removing the process for being attached to the oxide skin on surface of the metal product produced by hot forging etc.
Used in casting projection material made of iron and used the surface treatment method of the projection material.
Background technique
In the past, in the case where the surface of metal product is attached to the oxide skin being made of oxide (such as forging etc. add
Work), in order to carry out removing the blasting treatment of the oxide skin, the projection material that will be made of hard particles is carried out to metal product table
The bead (such as patent document 1) of face projection.
Patent document 1: Japanese Unexamined Patent Publication 2001-121205 bulletin
Most metal product carries out the adjustment of size after eliminating oxide skin as needed, then, via with as right
The metal product of elephant it is matched finishing and complete final product.Such as in the case where manufacturing the slide units such as bearing, carry out
It is arranged multiple for lubricating oil to be held in the processing of the small recess (recess) on surface.Therefore, in the process for removing descale
In, help to reduce cost if forming recess appropriate if metal surface can be made to be roughened.However, there is no have to remove
Oxide skin, and the projection material and sandblasting processing method of the ability of recess appropriate are formed on the surface of metal product.
In addition, it is not limited to which slide unit needs to hold metal product by fixture in finishing.Therefore, it is necessary to make
The rough surface of metal product turns to the degree for being capable of increasing holding power.In order to make the surface roughening of metal product, need to make
With the projection material for comparing major diameter.However, coverage rate (the projection material of every fixed-area if the size for increasing projection material
It is practical to beat trace area) it reduces.Therefore, except the efficiency of descale reduces.Moreover, also requiring the surface section for being present in metal product
The removing of defect, the sealing of hole of such as microcrack and oxide skin removing simultaneously carry out.
It requires efficiently to carry out oxide skin removing and roughening by single treatment or be present in the defect of surface section
Removing.However, and there is no can satisfy the projection material and surface treatment method required in this way.
Summary of the invention
Therefore, in the present invention, provide a kind of for the metal product for foring oxide skin, can efficiently remove deoxidation
Skin, and surface roughening can be made, or be able to carry out projection material and the use of the removing of defect for being present in surface section
The surface treatment method of the projection material.
An aspect of of the present present invention is related to for removing the oxide skin formed on the surface of metal product by blasting treatment
The projection material of cast steel.The projection material has first group and second group of projection material group.First group is that partial size d1 belongs to
The projection material group of first particle size interval d1max >=d1 > d1min has maximum frequency P1 in the first particle size interval.Second
Group is the projection material group that partial size d2 belongs to second particle size interval d2max >=d2 > d2min, is had most in the second particle size interval
Big frequency P2.First group of relationship for meeting d1max=d2min with second group.The projection material constituted by first group with second group
Size-frequency distribution it is substantially continuous.
First group of projection material mainly helps the removing for efficiently carrying out oxide skin, and second group of projection material helps
Descale is removed in passing through blasting treatment, and facilitates the roughening on the surface of metal product or is present in metal product
Surface section defect removing.In projection material of the invention, with first group of projection material and second group of projection material
The particle diameter distribution that the existing mode of material both sides adjusts projection material can supplement deficiency thus, it is possible to maintain respective advantage
Blasting treatment ability.I.e. for the metal product for foring oxide skin, descale can be efficiently removed, and table can be made
Face roughening, can be sufficiently carried out the removing for being present in the defect of surface section of metal product.
In one embodiment, it also may be configured as: d1min=0.710mm and d2max=1.700mm, d1max are
1.000mm 1.180mm.In this case, the roughening on the surface of metal product can be effectively performed, or effectively
Carry out the removing for being present in the defect of the surface section of metal product.
In one embodiment, also may be configured as: metal product is hot-forged products, and the Vickers hardness for projecting material is HV300
~HV600.Projecting material has enough hardness relative to blasting treatment object in HV300 or more, throws in HV600 or less
Material is penetrated with enough toughness.Therefore, it is set as the projection material that Vickers hardness is HV300~HV600, so as to have both foot
Enough hardness and toughness, even metal product hot-forged products can also be sufficiently carried out surface treatment.
In one embodiment, also may be configured as: metal product is slide unit, and maximum frequency P1 is present in particle size interval
1.180mm >=d1 > 1.000mm, above-mentioned maximum frequency P2 are present in particle size interval 1.700mm >=d2 > 1.400mm.
In one embodiment, also may be configured as: d1min=0.600mm and d2max=1.180mm, d1max are
1.000mm 1.180mm.In this case, also may be configured as: metal product is hot-forged products, projects the Vickers hardness of material
It is HV300~HV600.Also, also may be configured as: metal product is slide unit, and maximum frequency P1 is present in particle size interval
1.000mm >=d1 > 0.850mm, maximum frequency P2 are present in particle size interval 1.180mm >=d2 > 1.000mm.
In one embodiment, also may be configured as: d1min=0.600mm and d2max=1.700mm, d1max are
1.000mm 1.180mm.In this case, also may be configured as: metal product is hot-forged products, projects the Vickers hardness of material
It is HV300~HV600.Also, also may be configured as: metal product is slide unit, and maximum frequency P1 is present in particle size interval
1.000mm >=d1 > 0.850mm, maximum frequency P2 are present in particle size interval 1.700mm >=d2 > 1.400mm.
In one embodiment, also may be configured as: project material it is whole with convex-shaped surface at.In this case, such as
The recess with countless curved surfaces can be formed on surface.In addition, the contact area of projection material is uniformly and broad, so can be high
Effect ground carries out the plastic deformation of metal product, can be carried out efficiently the removing for being present in the defect of surface section of metal product.
Another aspect of the present invention relates to the surface treatment methods for the metal product for having used above-mentioned projection material, have:
Mixture process is projected, by not used projection mixture in above-mentioned sand blasting unit；Operation is mixed to form process, passes through spray
The operation of sand device forms the particle diameter distribution for making the to project material operation mixing stable with fixed particle diameter distribution；And at surface
Projection material is removed the oxide skin on the surface of metal product by sand blasting unit by science and engineering sequence to metal product projection, and
It carries out the roughening on the surface of metal product or carries out the removing of the defect existing for the surface section on the surface of metal product.
It is mixed to form in process in operation using above-mentioned projection material according to the disclosure and operates mixed shape to form
State, can remove the oxide skin on the surface of metal product, and can be carried out efficiently the roughening on the surface of metal product, or
Person efficiently carries out the removing for being present in the defect of the surface section of above-mentioned surface of metal product.
In one embodiment, also may be configured as: the particle diameter distribution that operation is mixed to form the projection material after process is
0.250mm~1.700mm, and there is maximum frequency P1 and P2.In this case, the oxide skin that can get both for a long time is removed
It goes and by the roughening that there is the projection material of the size distribution group of maximum frequency P1 to carry out or the defect for being present in surface section
Removing.
In one embodiment, also may be configured as: maximum frequency P1 and P2 meets P2≤P1.
In one embodiment, also may be configured as: operation be mixed to form the particle diameter distribution of the projection material after process with not
The projection material used is compared, and the position of maximum frequency P1 and P2 has not been changed, and the frequency V between maximum frequency P1 and P2 is opposite
Relatively increase in maximum frequency P1 and P2.In this case of composition, maintain first group projection material effect with
And the effect of second group of projection material, and the particle diameter distribution between maximum frequency becomes wider.Therefore, it is carried out by projection material
The size for beating trace there is continuous distribution, so coverage rate can be made to increase, can be carried out efficiently surface treatment.In addition,
" the frequency V between maximum frequency P1 and P2 relatively increases relative to maximum frequency P1 and P2 " refers to maximum frequency P1 and frequency
At least one party spent in the difference of V and the difference of maximum frequency P2 and frequency V becomes smaller.
In one embodiment, also may be configured as: above-mentioned metal product is passed through by the molding slide unit of hot forging
Above-mentioned surface treatment procedure removes the oxide skin on the surface of the slide unit, and makes as defined in JIS-B0601:2000 at 10 points
Mean roughness Rz is 50 μm~60 μm.In this case, in the surface treatment procedure of slide unit, the energy in post-processing etc.
Enough it is adjusted to surface roughness appropriate.
There is provided it is a kind of can efficiently remove descale for the metal product for foring oxide skin, and table can be made
Face roughening, or be able to carry out the projection material of the removing for the defect for being present in surface section and used the table of the projection material
Surface treatment method.
Detailed description of the invention
Fig. 1 is the explanatory diagram for schematically showing the particle diameter distribution of projection material of the invention.
(A) of Fig. 2 is the explanatory diagram for indicating projection density when coverage rate reaches 100%.It (B) is the throwing for indicating every 1kg
Penetrate explanatory diagram of the quantity of material relative to the partial size for projecting material.
Fig. 3 is the explanatory diagram for indicating the relationship of partial size and collision energy of projection material.
Fig. 4 is the explanatory diagram for indicating the relationship of the life value of partial size and projection material of projection material.
Fig. 5 is the particle diameter distribution and operation for schematically showing the operation by the projection material of embodiment and being mixed to form after process
The explanatory diagram that particle diameter distribution before being mixed to form process is compared.
Fig. 6 is that the operation of the projection material of embodiment is mixed to form the particle diameter distribution before process.
Fig. 7 is that the operation of the projection material of Fig. 6 is mixed to form the particle diameter distribution after process.
Fig. 8 is that the operation of the projection material of embodiment is mixed to form the particle diameter distribution before process.
Fig. 9 is that the operation of the projection material of Fig. 8 is mixed to form the particle diameter distribution after process.
Specific embodiment
Projection material of the invention can be used for the casting for removing descale from the surface of metal product by blasting treatment
The projection material of iron (cast steel system).Here, the hardness for projecting material can be according to the metal of the object removed as oxide skin
Product and properly select.In the present embodiment, to can be used in gear, cylinder, slide unit etc. by hot forging made
The projection material for making the surface treatment of the metal product of (molding) is illustrated.
Projecting material is made of the ferrous material (cast iron) selected from the range of 300~HV600 of vickers hardness hv
Spherical shot-peening.Here, as such ferrous material, such as can use following particle: ingredient system includes the C in terms of weight %:
0.8%~1.2%, Mn:0.35%~1.20%, Si:0.40%~1.50%, P≤0.05%, S≤0.05%, remainder
It is Fe and inevitable impurity, and there is tempered martensite and/or bainite structure or quenched martensite tissue
Or similar tissue.Such particle can for example be made by method well known to water atomization etc..Here, material is projected
Material has enough hardness for blasting treatment object in HV300 or more, and material is projected in HV600 or less with enough
Toughness.Projection material of the invention in this way has both enough hardness and toughness, so can be used in the sandblasting on the surface of hot-forged products
Processing.Here, vickers hardness hv is based on Japanese Industrial Standards JIS Z 2244 (2009).
Fig. 1 schematically shows the particle diameter distribution of projection material.Horizontal axis is partial size, and the longitudinal axis is weight fraction.Project material tool
Standby: first group, be the first particle size interval d1max >=d1 > d1min (partial size for belonging to the removing for mainly helping oxide skin
D1 projection material group) has maximum frequency P1 in the particle size interval；And second group, it is to belong to mainly help gold
The roughening on the surface of metal products or facilitate the defect existing for the surface section of metal product removing the second partial size area
Between d2max >=d2 > d2min (partial size d2) projection material group, there is maximum frequency P2 in the particle size interval.Here, first
Group meets the relationship of d1max=d2min with second group.In addition, the partial size frequency of the projection material constituted by first group with second group
Degree distribution is actually continuous.Hereinafter, the frequency between maximum frequency P1 and P2 is set as V (V1, V2 ...).
Here, " particle of particle size interval d1max >=d > d1min " is indicated through the mark as defined in JIS Z8801 (2006)
Claim the standard screen of sieve pore d1max, and by the particle of the standard screen of nominal sieve pore d1min capture (not passing through).Such as " particle size interval
The particle of 1.700mm >=d > 1.400mm " indicates the mark by the nominal sieve pore 1.700mm as defined in JIS Z8801 (2006)
Quasi- sieve, and by the particle of the standard screen of nominal sieve pore 1.400mm capture (not passing through).In addition, allowing comprising most 5% or so
The particle of the lower limit value of particle size interval path below.In addition, in the various figures, the partial size of horizontal axis shows partial size as typical value
The lower limit value in section.Such as in the case where being labeled as partial size 1.400mm, " particle size interval 1.700mm >=d > 1.400mm is indicated
Particle ".
First group of projection material needs to make coverage rate with less projection amount to efficiently carry out the removing of oxide skin
Increase.(A) of Fig. 2 is the partial size and the chart of the relationship of projection density indicated when coverage rate reaches 100%.Horizontal axis is partial size,
The longitudinal axis is projection density.The evaluation for projecting density uses vane type sand blasting unit, with velocity of projection 73m/s to hardness HV200's
SUJ2 (high-carbon-chromium bearing steel steel) target processed collides projection material with workpiece 1 and workpiece 2.Workpiece after projection is by showing
Micro mirror carries out appearance shooting, by the evaluation for carrying out coverage rate compared with standard photographs.
Confirm the trend that partial size is smaller, more makes coverage rate reach 100% with small projection density.This is because partial size
Smaller, then the quantity of the projection material of per unit mass is more, so the chance that projection material is contacted with metal product increases.Figure
2 (B) is chart of the quantity of the projection material of every 1kg relative to the partial size for projecting material.Horizontal axis is partial size, and the longitudinal axis is every list
The projection material quantity of position quality.Known to if projection material partial size become 1.000mm hereinafter, if per unit mass projection material
The quantity of material rises.Therefore, in order to efficiently carry out oxide skin removing, partial size can be set as 1.000mm or less.In addition, grain
Diameter is 0.500mm projection material below in aftermentioned blasting treatment, is easily separated device, dust arrester removing, causes to project
The reduction of material lifetime.Therefore, partial size can also be more than 0.600mm.
Second group of projection material removes descale to pass through blasting treatment, and mainly for the surface of metal product
Roughening or removing be present in metal product surface section defect, and need that there is enough collision energies.Fig. 3 is
Indicate the chart of the partial size of the projection material of single particle size and the relationship of collision energy.Horizontal axis is partial size, and the longitudinal axis is each
Collision energy.Here, collision energy is at projection material weight M, speed V, according to (ρ × 4/3 M=× π r 1/2 × M × V23)
To calculate.In addition, ρ=7.5g/cm3, V=70m/s.At least need 0.01J/ is a to touch in the roughening on the surface of hot-forged products
Hit energy.Therefore, partial size can be set as 1.000mm or more.Additionally, there are removing for the defect of the surface section in metal product
It goes, such as the partial size of 1.200mm or more can be set as in the sealing pores of microcrack.
Next, studying partial size appropriate according to the service life of projection material.Fig. 4 is partial size and the longevity for indicating projection material
The chart of the relationship of life value.Horizontal axis is partial size, and the longitudinal axis is life value.Project material life test with by SAE J445 (SAE:
Society of Automotive Engineers: Society of automotive engineers) as defined in 100%Replacement Method
On the basis of (method of substitution), using Irving's formula life detector, be set as velocity of projection 60m/s, target hardness HRC65 (HRC:
Rockwell hardness: Rockwell hardness), cutoff value is implemented by the mesh measurement under one screen (primary screening)
(cut-off value).Breaked projection material is screened out as unit of fixing collision frequency, and measures remaining projection material
The weight of material is tested until remaining projection material becomes initial 30% or less.Expression will be obtained by the test
Collision frequency and the life curve of relationship of weight ratio of residual projection material integrated and the numerical value that finds out is as the longevity
Life value.
The partial size for projecting material is bigger, then there is service life shorter trend.The life value of projection material is required 1000 times
Situation more than circulation is in the majority.Therefore, second group of projection material can be set as 1.700mm or less.In addition, if using partial size
Big projection material, then sand blasting unit damages, increases such as the abrasion of component.Therefore, not excessively partial size can also be made to become larger.
Only in first group of projection material, it can be improved coverage rate and removed so being able to carry out efficient oxide skin, but
It may not proceed sufficiently the roughening on the surface of metal product, or may not proceed sufficiently the surface section for being present in metal product
Defect removing.
On the other hand, it only can be sufficiently carried out the roughening on the surface of metal product in second group of projection material,
Or it can be sufficiently carried out the removing for being present in the defect of surface section of metal product, but due to the population of per unit weight
It tails off, so leading to the reduction of coverage rate (reality of the projection material of every fixed-area beats trace area).
It is existing with first group of projection material and second group of projection material both sides in projection material of the invention
The particle diameter distribution that mode adjusts projection material can supplement insufficient blasting treatment ability thus, it is possible to maintain respective advantage.
I.e. for the metal product for foring oxide skin, descale can be efficiently removed, and can be sufficiently carried out keeps surface thick
Roughening is sufficiently carried out the removing for being present in the defect of surface section of metal product.Here, can also meet with second group for first group
The relationship of d1max=d2min.In addition, the size-frequency distribution of the projection material constituted by first group with second group is substantially
Continuously.The size for beating trace being surface-treated as a result, has continuous distribution, so coverage rate (coverage) can be increased,
It can be carried out efficiently surface treatment.In order to realize the effect, d1max=d2min can also be set as 1.000mm, can also be set as
1.180mm。
Here, in order to roughening is effectively performed or be present in surface section defect removing, first group of throwing of adjustment
The ratio of material is penetrated, maximum frequency P1 and P2 can also meet P2≤P1.
In the case where metal product is slide unit, it is able to use maximum frequency P1 and is present in particle size interval 1.000mm
>=d1 > 0.850mm, maximum frequency P2 are present in the such projection material of particle size interval 1.700mm >=d2 > 1.400mm.Or
Maximum frequency P1 can also be used to be present in particle size interval 1.180mm >=d1 > 1.000mm, maximum frequency P2 is present in particle size interval
1.700mm >=d2 > 1.400mm is such to project material.In addition, being able to use most in the case where surface roughness to be reduced
Big frequency P1 is present in particle size interval 1.000mm >=d1 > 0.850mm, maximum frequency P2 be present in particle size interval 1.180mm >=
D2 > 1.000mm is such to project material.
The size distribution for projecting material can be according to the character of the metal product as workpiece (shape, material, oxide skin
State etc.) and surface treatment purpose and suitably change.Such as it can be set to d1min=0.710mm and d2max=
1.700mm, can also be set as d1max is 1.000mm or 1.180mm.Or can will be set as d1min=0.600mm and
D1max=d2min can also be set as 1.000mm or 1.180mm by d2max=1.180mm.Or it can be set to d1min=
D1max=d2min can also be set as 1.000mm or 1.180mm by 0.600mm and d2max=1.700mm.In any feelings
Under condition, there is maximum frequency P1 and P2, and having is substantially continuous size distribution, thus for oxide skin is formd
Metal product can efficiently remove descale, and can be sufficiently carried out and make surface roughening, be present in metal product
The removing of the defect of surface section.
For projecting material, the sieve of mesh as defined in JIS Z8801 (2006) is able to use to passing through water atomization
The particle produced Deng well known method is classified, mixed, adjusted in a manner of becoming desired particle diameter distribution and
Production.
Next, carrying out oxide skin removing and roughening or envelope by blasting treatment to above-mentioned projection material is used
The surface treatment method of hole processing is illustrated.
In the surface treatment for carrying out metal product using projection material of the invention, such as it is able to use patent document 1
Recorded such well known centrifugal type sand blasting unit.In addition, grit-blasting treatment process of the invention is not limited to use the spray
The method of sand device.
Sand blasting unit has: carry out projection material stockpile and the hopper of weight feed, projection projection material impeller
Unit makes the circulator for projecting material circulation, makes to project separator and dust collect plant that material is separated with sand, oxide skin.
It projects material to be put into from hopper to impeller units, has been put into the projection material of impeller units in impeller units
It is accelerated to be projected to being configured at the indoor metal product of projection.The blasting treatment of metal product is carried out as a result,.
The projection material being projected is filled together with the oxide skin removed by blasting treatment from metal product by circulation
Receipts are put back into, and are conveyed to separator.
Make in the separator project material fallen with apron shape, using generated by dust arrester air-flow riddled sand, oxide skin
And pulverized small projection material, and it is discharged to outside dust arrester and device.Blasting treatment is effectively projected
Material is supplied to impeller units again, is recycled.
Projection quantity of material reduces the amount being discharged to outside device in device, so needing to feed amount corresponding with reduction amount
Projection material (by the not used projection mixture process loaded to sand blasting unit of projection material).Project the reduction of material
It is detected by the load current value of impeller units, new projection material is automatically or manually fed to hopper.
Repeat above-mentioned projection, micro mist device outside be discharged, supply sequence of operations as a result, device in projection
The particle diameter distribution of material is stablized with the particle diameter distribution of the fixation different from the not used projection particle diameter distribution of material and (is passed through spray
The operation of sand device forms the mixed operation mixing of the operation for making the particle diameter distribution for projecting material stabilize to fixed particle diameter distribution
Formation process).The state of the particle diameter distribution stabilized is known as to operate mixing.After operation is mixed to form process, pass through spray
Sand device projects projection material to metal product and removes the oxide skin on the surface of metal product, and carries out the table of metal product
The roughening in face, or carry out the removing (surface treatment procedure) for being present in the defect of the surface section of surface of metal product.For
For projecting material, the grain that material is projected in the device after operation is mixed to form is managed in a manner of carrying out efficient blasting treatment
Diameter distribution is important.
If the partial size point in sand blasting unit using projection material of the invention, after operation can be mixed to form to process
Cloth is set as wider (such as 0.250mm~1.700mm), and has maximum frequency P1 and P2, without special device, side
Method.Moreover, can be set as not changing the position (partial size) of maximum frequency P1 and P2, most compared with not used projection material
Frequency V between big frequency P1 and P2 relatively increases the distribution of such feature relative to maximum frequency P1 and P2.As a result,
Maintain the effect of the effect of first group of projection material and second group of projection material, and the particle diameter distribution between maximum frequency
It is wider.The size for beating trace based on projection material, which has, to be continuously distributed, so coverage rate can be made to increase, can efficiently into
Row surface treatment.
Also, in order to carry out efficient oxide skin removing and be effectively performed to be roughened or being present in surface section
The removing of defect is mixed to form in the particle diameter distribution in the sand blasting unit after process in operation, can also be set as maximum frequency P1 with
And P2 meets P2≤P1.
The entirety of projection material can also be formed with convex surface.Using it is whole with convex-shaped surface at projection material carry out
In the case where surface treatment procedure, such as the recess with countless curved surfaces can be formed on surface.Therefore, be capable of forming for
Surface keeps sliding property of the recess of lubricating oil without losing metal product.In addition, the contact area of projection material is uniformly and wide
Extensively, so can be carried out efficiently the plastic deformation of metal product, it can be carried out efficiently the surface section for being present in metal product
Defect removing.In addition, " whole to be formed with convex surface " refers to the shape without corner.It is not only spherical particle,
Such as chamfering also is carried out comprising the corner to the particle of cylindrical shape and the particle of shape that is rounded.
(modification)
The form of projection material is not limited to shot-peening, is also able to use sand grains, wire shot etc..
Projection material of the invention and surface treatment method are other than the hot-forged products being made of steel, additionally it is possible to apply
In the surface treatment for forming the material of oxide skin, the metal product of manufacturing method.Such as it can be applied to the oxidation of rolled plate
Skin removing etc..
(embodiment effect)
Projection material according to the present invention and the surface treatment method for having used the projection material can be directed to and form oxygen
Change the metal product of skin, efficiently remove descale, and surface roughening can be made, or carries out being present in lacking for surface section
Sunken removing.Especially by hardness, the particle diameter distribution of suitably setting projection material, can be used at the surface of hot-forged products
Reason.
Embodiment
Hereinafter, being illustrated to for the embodiment for confirming effect of the invention and carrying out.
It carries out that the oxide skin of projection material of the invention has been used to remove, the surface roughness after surface treatment is carried out
Evaluation.The machined object used in this test makes material SUJ, and shape is cylinder (inner ring of tapered roller bearing), is trying
Projectile test device used in testing is shot-blast unit SNTX-I type (Xindong Industry Co), is come with velocity of projection 73m/s
Implement.Projection density has been set as projection density when coverage rate reaches 100%.Projection density has been set as 150kg/m2~300kg/
m2.In addition, assessment item is surface roughness, it is average thick using 10 points as defined in JIS-B0601:2000 as measuring method
Rugosity Rz (μm).
Projection material is the shot of hardness HV450, prepares the partial size for changing maximum frequency P1 and P2 and maximum frequency
The projection material for spending the ratio of P1 and maximum frequency P2, is supplied to test.For test, material will be projected to projectile test
Device investment, repetition continuously run and feed and form operation mixing after, carried out projectile test.
The particle diameter distribution of the projection material for test is illustrated below.
(1) first group
Partial size as maximum frequency P1 is 0.710mm (particle size interval 0.850mm >=d1 > 0.710mm), 0.850mm
(particle size interval 1.000mm >=d1 > 0.850mm), 1.000mm (particle size interval 1.180mm >=d1 > 1.000mm) this 3 grades
(2) second groups
Partial size as maximum frequency P2 is 1.400mm (particle size interval 1.700mm >=d2 > 1.400mm), 1.180mm
(particle size interval 1.400mm >=d2 > 1.180mm), 1.000mm (particle size interval 1.180mm >=d2 > 1.000mm) this 3 grades
Table 1 show it is each under the conditions of surface roughness measurement result.In such manner, it is possible to by it is selected with maximum frequency P1 and
P2 corresponding partial size appropriate adjusts surface roughness.Such as the surface treatment work in the slide unit produced by hot forging
In sequence, Rz50 μm of preferred surface roughness~60 μm or so can be adjusted in post-processing etc..
[table 1]
| The partial size of maximum frequency P2 | The partial size of maximum frequency P1 | Surface roughness Rz (μm) |
| 1.400mm | 0.710mm | 51.05 |
| 1.400mm | 0.850mm | 54.13 |
| 1.400mm | 1.000mm | 53.35 |
| 1.180mm | 0.710mm | 50.05 |
| 1.180mm | 0.850mm | 50.10 |
| 1.180mm | 1.000mm | 51.90 |
| 1.000mm | 0.710mm | 50.01 |
| 1.000mm | 0.850mm | 50.11 |
Hereinafter, graphically illustrating above-mentioned particle diameter distribution.Fig. 5 is to schematically show that the operation by projection material of the invention mixes
Particle diameter distribution after closing formation process, with operate the explanatory diagram for being mixed to form the particle diameter distribution before process and being compared.First group
The partial size of maximum frequency P1 be 0.850mm, the partial size of second group of maximum frequency P2 is 1.400mm." initial " is that operation is mixed
Particle diameter distribution before closing formation process, " operation mixing " are that operation is mixed to form the particle diameter distribution after process.Operation is mixed to form
The difference of maximum frequency P1, P2 and frequency V1 after process are smaller than the difference of initial maximum frequency P1, P2 and frequency V1.In addition, behaviour
Difference of the difference of maximum frequency P1, P2 and frequency V2 after being mixed to form process than initial maximum frequency P1, P2 and frequency V1
It is small.In such manner, it is possible to confirming becomes the position for not changing maximum frequency P1 and P2, and the frequency between maximum frequency P1 and P2
V (V1, V2) relatively increases the distribution of such feature relative to maximum frequency P1 and P2.It, can be by making referring to table 1
Rz54.13 μm of surface roughness or so is adjusted to the projection material.
Fig. 6 is the particle diameter distribution before the operation of the projection material of embodiment is mixed to form.Horizontal axis is partial size, and the longitudinal axis is weight
Divide rate.First group of partial size is 1.000mm, and second group of partial size is 1.400mm.N is test number, is averagely test number institute
The average value for the test result shown.Fig. 7 is the particle diameter distribution after the operation of the projection material of Fig. 6 is mixed to form.In such manner, it is possible to really
Recognize to become and do not change the position (partial size) of maximum frequency P1 and P2, and the frequency V between maximum frequency P1 and P2 relative to
Maximum frequency P1 and P2 and the distribution for relatively increasing such feature.Operate the average maximum frequency P2 after being mixed to form
: maximum frequency P1 is 18: 23, meets P2≤P1.
Fig. 8 is the particle diameter distribution before the operation of the projection material of embodiment is mixed to form.Horizontal axis is partial size, and the longitudinal axis is weight
Divide rate.First group of partial size is 0.850mm, and second group of partial size is 1.000mm.N is test number, is averagely test number institute
The average value for the test result shown.Fig. 9 is the particle diameter distribution after the operation of the projection material of Fig. 8 is mixed to form.In such manner, it is possible to really
Recognize to become and do not change the position (partial size) of maximum frequency P1 and P2, and the frequency V between maximum frequency P1 and P2 relative to
The distribution of feature as maximum frequency P1 and P2 and opposite increase.Operate the average maximum frequency P2 after being mixed to form
: maximum frequency P1 is 23: 24, meets P2≤P1.
Claims (12)
1. a kind of projection material is the cast steel system for removing the oxide skin formed on the surface of metal product by blasting treatment
Projection material, wherein the projection material has:
First group, be the projection material group that partial size d1 belongs to first particle size interval d1max >=d1 > d1min, above-mentioned first
There is maximum frequency P1 in particle size interval；And
Second group, be the projection material group that partial size d2 belongs to second particle size interval d2max >=d2 > d2min, above-mentioned second
There is maximum frequency P2 in particle size interval,
The above-mentioned first group relationship for meeting d1max=d2min with above-mentioned second group,
The size-frequency distribution of the projection material constituted by above-mentioned first group with above-mentioned second group is substantially continuous.
2. projection material according to claim 1, wherein
D1min=0.710mm and d2max=1.700mm, d1max are 1.000mm or 1.180mm.
3. projection material according to claim 1 or 2, wherein
Above-mentioned metal product is hot-forged products,
The Vickers hardness of above-mentioned projection material is HV300~HV600.
4. projection material according to claim 3, wherein
Above-mentioned metal product is slide unit,
Above-mentioned maximum frequency P1 is present in particle size interval 1.180mm >=d1 > 1.000mm, and above-mentioned maximum frequency P2 is present in partial size
Section 1.700mm >=d2 > 1.400mm.
5. projection material according to claim 1, wherein
D1min=0.600mm and d2max=1.180mm, d1max are 1.000mm or 1.180mm.
6. projection material according to claim 1, wherein
D1min=0.600mm and d2max=1.700mm, d1max are 1.000mm or 1.180mm.
7. projection material described according to claim 1~any one of 6, wherein
The entirety of above-mentioned projection material is formed with convex surface.
8. a kind of surface treatment method of metal product is to have used above-mentioned projection material according to any one of claims 1 to 7
The surface treatment method of the metal product of material, wherein have:
Mixture process is projected, by not used projection mixture in sand blasting unit；
Operation is mixed to form process, and being formed by the operation of above-mentioned sand blasting unit makes the particle diameter distribution for projecting material with fixed grain
Diameter is distributed stable operation mixing；And
Above-mentioned projection material is removed above-mentioned gold to the projection of above-mentioned metal product by above-mentioned sand blasting unit by surface treatment procedure
The oxide skin on the surface of metal products, and carry out the roughening on the surface of above-mentioned metal product or carry out in above-mentioned made of metal
The removing of defect existing for the surface section on the surface of product.
9. the surface treatment method of metal product according to claim 8, wherein
The particle diameter distribution that aforesaid operations are mixed to form the above-mentioned projection material after process is 0.250mm~1.700mm, and is had most
Big frequency P1 and P2.
10. the surface treatment method of metal product according to claim 9, wherein
Above-mentioned maximum frequency P1 and P2 meet P2≤P1.
11. the surface treatment method of metal product according to any one of claims 8 to 10, wherein
Aforesaid operations are mixed to form the particle diameter distribution of the above-mentioned projection material after process compared with not used projection material, above-mentioned
The position of maximum frequency P1 and P2 has not been changed, and the frequency V between above-mentioned maximum frequency P1 and P2 is relative to above-mentioned maximum frequency
P1 and P2 relatively increase.
12. the surface treatment method of the metal product according to any one of claim 8~11, wherein
Above-mentioned metal product is to remove above-mentioned sliding part by above-mentioned surface treatment procedure by the molding slide unit of hot forging
The oxide skin on the surface of part, and make 10 50 μm~60 μm of mean roughness Rz as defined in JIS-B0601:2000.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016124135 | 2016-06-23 | ||
| JP2016-124135 | 2016-06-23 | ||
| PCT/JP2017/022539 WO2017221894A1 (en) | 2016-06-23 | 2017-06-19 | Shot material and method for surface treatment of metal product using said shot material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109311140A true CN109311140A (en) | 2019-02-05 |
| CN109311140B CN109311140B (en) | 2021-08-10 |
Family
ID=60784522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780037835.6A Active CN109311140B (en) | 2016-06-23 | 2017-06-19 | Projection material and method for surface treatment of metal product using the same |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP6841280B2 (en) |
| KR (1) | KR20190020043A (en) |
| CN (1) | CN109311140B (en) |
| BR (1) | BR112018073913A2 (en) |
| TW (1) | TW201805119A (en) |
| WO (1) | WO2017221894A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615438A (en) * | 2018-01-25 | 2020-09-01 | 新东工业株式会社 | Projection material and shot peening method |
| DE112019000532T5 (en) * | 2018-01-25 | 2020-10-08 | Sintokogio, Ltd. | Centrifugal material and methods of shot blasting |
| JP7397318B2 (en) | 2020-04-23 | 2023-12-13 | 日本製鉄株式会社 | Steel plate manufacturing method, steel pipe manufacturing method, steel plate manufacturing equipment and program |
| JP7310076B2 (en) * | 2020-08-19 | 2023-07-19 | サムテック株式会社 | Method for manufacturing forged member |
| JP2022136707A (en) | 2021-03-08 | 2022-09-21 | 新東工業株式会社 | Surface processing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211489A (en) * | 1997-09-01 | 1999-03-24 | 普拉斯特隆株式会社 | Metal surface treatment method and metallic material treated thereby |
| JP2001353661A (en) * | 2000-06-15 | 2001-12-25 | Sinto Brator Co Ltd | Projection material for blasting |
| JP2003342555A (en) * | 2002-05-30 | 2003-12-03 | Ikk Shotto Kk | Mixed metal-based granulate |
| CN1583366A (en) * | 2003-08-22 | 2005-02-23 | 日本先锋公司 | Abrasive for forming partitions of plasma display panels and manufacture of plasma display panels |
| CN1943992A (en) * | 2006-09-29 | 2007-04-11 | 连云港倍特金属磨料有限公司 | Zinc alloy shot and its preparing method |
| CN101410225A (en) * | 2006-04-03 | 2009-04-15 | 三菱重工业株式会社 | Process for producing metallic component and structural member |
| CN101535003A (en) * | 2006-09-11 | 2009-09-16 | 安比奥有限公司 | Method of doping surfaces |
| CN103243325A (en) * | 2012-02-06 | 2013-08-14 | 浙江伟星实业发展股份有限公司 | Surface treatment method of metal product |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235014A (en) * | 1987-03-20 | 1988-09-30 | Sumitomo Metal Ind Ltd | Preventing method for scale indentation flaw |
| JP4208298B2 (en) * | 1998-08-07 | 2009-01-14 | 株式会社小松製作所 | Shot peening method |
| JP2001121205A (en) | 1999-10-25 | 2001-05-08 | Nippon Steel Corp | Scale removing method of steel |
| JP4385803B2 (en) * | 2004-03-17 | 2009-12-16 | Ｊｆｅスチール株式会社 | Method for producing metal plate with surface texture |
| BR112017011568B1 (en) * | 2015-03-12 | 2021-06-08 | Sintokogio, Ltd | iron-based blasting medium used for blast cleaning of a surface |
| KR102460924B1 (en) * | 2015-03-12 | 2022-11-01 | 신토고교 가부시키가이샤 | How to Blast-Clean Castings |
| JP6512286B2 (en) * | 2015-04-30 | 2019-05-15 | 新東工業株式会社 | How to remove scale |
-
2017
- 2017-06-19 JP JP2018524086A patent/JP6841280B2/en active Active
- 2017-06-19 KR KR1020197001360A patent/KR20190020043A/en unknown
- 2017-06-19 CN CN201780037835.6A patent/CN109311140B/en active Active
- 2017-06-19 WO PCT/JP2017/022539 patent/WO2017221894A1/en active Application Filing
- 2017-06-19 BR BR112018073913A patent/BR112018073913A2/en not_active Application Discontinuation
- 2017-06-23 TW TW106121018A patent/TW201805119A/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211489A (en) * | 1997-09-01 | 1999-03-24 | 普拉斯特隆株式会社 | Metal surface treatment method and metallic material treated thereby |
| JP2001353661A (en) * | 2000-06-15 | 2001-12-25 | Sinto Brator Co Ltd | Projection material for blasting |
| JP2003342555A (en) * | 2002-05-30 | 2003-12-03 | Ikk Shotto Kk | Mixed metal-based granulate |
| CN1583366A (en) * | 2003-08-22 | 2005-02-23 | 日本先锋公司 | Abrasive for forming partitions of plasma display panels and manufacture of plasma display panels |
| CN101410225A (en) * | 2006-04-03 | 2009-04-15 | 三菱重工业株式会社 | Process for producing metallic component and structural member |
| CN101535003A (en) * | 2006-09-11 | 2009-09-16 | 安比奥有限公司 | Method of doping surfaces |
| CN1943992A (en) * | 2006-09-29 | 2007-04-11 | 连云港倍特金属磨料有限公司 | Zinc alloy shot and its preparing method |
| CN103243325A (en) * | 2012-02-06 | 2013-08-14 | 浙江伟星实业发展股份有限公司 | Surface treatment method of metal product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2017221894A1 (en) | 2019-04-11 |
| JP6841280B2 (en) | 2021-03-10 |
| BR112018073913A2 (en) | 2019-02-26 |
| KR20190020043A (en) | 2019-02-27 |
| WO2017221894A1 (en) | 2017-12-28 |
| CN109311140B (en) | 2021-08-10 |
| TW201805119A (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109311140A (en) | It projects material and has used the surface treatment method of the metal product of the projection material | |
| EP2849920B1 (en) | Manufacturing process for aerospace bearing rolling elements | |
| CN107000164B (en) | The abrasive cleaning method of casting | |
| JP6512286B2 (en) | How to remove scale | |
| KR100420127B1 (en) | Blasting material for blasting process and method using thereof | |
| US11478897B2 (en) | Blasting processing method using shot media | |
| AU767595B2 (en) | Steel ballistic shot and production method | |
| KR102460923B1 (en) | projectile | |
| KR102548843B1 (en) | cast iron projectiles | |
| Máscia et al. | Effects of pressure and counterbody hardness in the abrasive wear behavior of tool steels | |
| US6749662B2 (en) | Steel ballistic shot and production method | |
| RU2455368C1 (en) | Method of surface hardening of steel products | |
| US11511393B2 (en) | Projection material and blasting method | |
| Perez Delgado et al. | Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact | |
| KR20140104977A (en) | Method for Producing Bearing Shells for Plain Bearings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |