CN109219671A - The manufacturing method of powder roller processed - Google Patents
The manufacturing method of powder roller processed Download PDFInfo
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- CN109219671A CN109219671A CN201780033569.XA CN201780033569A CN109219671A CN 109219671 A CN109219671 A CN 109219671A CN 201780033569 A CN201780033569 A CN 201780033569A CN 109219671 A CN109219671 A CN 109219671A
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- powder roller
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
-
- 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
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Coating By Spraying Or Casting (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention provides a kind of manufacturing method of powder roller processed, comprising: the roughing in surface process of spray treatment is carried out to the surface (2a) for the roller substrate (2) for constituting flat roll (1)；And sprayed on material is sprayed on the surface (2a) of the roller substrate (2) of roughing in surface, form the coating process with the spraying epithelium (3) for the hole (5) for keeping moisture.By the manufacturing method of the powder roller processed, the flat roll (1) that surface layer has water retaining function can be formed.By preventing the drying of cereal in powder process processed, amount of moisture appropriate is kept, can get good cereal powder.
Description
Technical field
The present invention relates to the manufacturing methods of powder roller processed used in the powder process processed in cereal such as wheats.
Background technique
The cereal such as wheat will carry out powder process processed after by selected process, quenched process etc..Currently, the paddy such as wheat
The powder processed of object is mainly with the progress of roller grinding mode.It is said that this mode is developed in the second half in 19th century, with stone mill mode phase
Specific production rate and quality greatly improve, and facilitate the industrialization of mill industry.
In the powder process processed of roller grinding mode, removed firstly, cereal breaker roll (brake roll) is roughly shredded
Epidermis is removed, the operation for being crushed, being classified with flat roll (smooth roll) is then repeated, is finally completed product.In general, right
In breaker roll, surface forms the groove that spacing is 10mm or so by filing processing, for flat roll, by two of rotation
It is inserted into intermediary (medium) between roller and delustring processing is implemented to surface, forms pear skin shape male and fomale(M&F).In patent document 1,2
Describe the delustring processing to flat roll.
These powder rollers processed are calculated as 600 or so hardened steel using surface hardness with vickers hardness hv.Harden the powder processed of steel
If roller is used for a long time, bumps present in surface can be worn, and cannot can not be obtained by grain grinding at size and shape appropriate
To high-quality powder.In order to restore the surface roughness of powder roller processed, needs to place under repair to surface, process, but in current method
In, due to being ground first, then places under repair, processes, so very time-consuming and laborious.Therefore, often will more roll change itself,
Lead to increased costs.
The occlusion (biting property) that can be improved raw material is described in patent document 3, effectively processing is former
Material, and the food processing roller of good occlusion property can be maintained for a long time.In the publication, by laser machining in roller table
Face forms multiple grooves or after roller surface forms overlay cladding, is formed on its surface multiple recess portions by laser processing.For
The shape for biting food is the groove or recess portion being recessed from the smooth outer peripheral surface of roller, even if use for a long time causes roller to wear,
Also the occlusion of food can be maintained.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication H10-131948 bulletin
Patent document 2: Japanese Unexamined Patent Publication H11-28621 bulletin
Patent document 3: public table Application Publication WO2013/179356 again
Summary of the invention
Problem to be solved by the invention
In the pulverizing process of cereal, other than the abrasion of the concave-convex surface of powder roller processed, there is also peculiar problems.Example
Such as, it since dry wheat is harder, can disperse when crushing, the powder of target shape, size can not be obtained, therefore small crushing
It is needed when wheat containing a certain amount of moisture.Using the flat roll of the record of patent document 1,2 or specially in the powder process processed of wheat
In the case where the food processing roller that sharp document 3 is recorded, friction and roller and wheat when passing through due to wheat between roller rub
It wipes, gradually band is warm for roller.If heat storage is in roller, since the influence of its temperature is so that the moisture of wheat evaporates, in wheat
It cannot keep amount of moisture appropriate, so that the good powder of target shape, size can not be obtained.
Therefore, the present invention is in view of the problems of the prior art, and it is an object of the present invention to provide can be by preventing paddy in powder process processed
The drying of object, the powder roller processed for keeping appropriate amount of moisture and obtaining good cereal powder manufacturing method.
The solution to the problem
The present inventor studies the method for preventing the drying of cereal in powder process processed, as a result by powder roller processed
Surface implement thermal spraying treatment, formed have keep moisture hole spraying epithelium, successfully make cereal keep it is appropriate
Amount of moisture, to solve the problems, such as.
That is, the manufacturing method of powder roller processed of the invention is characterized in that, comprising: roughing in surface process, to the surface of substrate into
Row spray treatment (blasting treatment)；And coating process, it is sprayed on the surface of the above-mentioned substrate of roughing in surface
Sprayed on material forms the spraying epithelium with the hole for keeping moisture.
It according to the present invention, can use powder roller for a long time due to forming spraying epithelium on the surface of substrate
The bumps for maintaining surface layer, will not damage smashing capability.In addition, according to thermal spraying, can be controlled by adjusting thermal spraying condition
The size of hole and there are ratios in made epithelium.Spraying epithelium formed according to the present invention has the hole for keeping moisture
Gap, therefore heat can be made to be difficult to be transferred to cereal, and since the water-retaining property on the surface layer of powder roller processed improves, so can get to paddy
The cooling of object.In addition, since form spraying epithelium is to increase surface area and surface roughness by implementing spray treatment
Substrate, it is possible to prevent spraying epithelium removing.Therefore, the abrasion on powder roller processed surface layer can be eliminated and spray the stripping of epithelium
From the problems such as, and cereal can be made to keep amount of moisture appropriate, it is hereby achieved that good cereal powder.
It is suitable for the value of the surface roughness Ra of the powder roller processed of ground cereal according to using purpose and different.In use powder
In the case that roller is as flat roll, the surface roughness Ra after above-mentioned coating process is preferably 5~15 μm.On the other hand, make
Powder roller processed is used as can use in the case where breaker roll to carve groove on base material and crushed, therefore roughness is without reaching
To the degree of flat roll, it is contemplated that durability, the surface roughness Ra after above-mentioned coating process is preferably 2~8 μm.
In general, ceramics are lower than metal with the thermal conductivity of cermet, therefore pass through heat using ceramics or cermet as material
Spraying be covered on metal material substrate surface and manufactured powder roller processed have be stored in the frictional heat generated in crushing process
Trend.Therefore, the thickness of the spraying epithelium formed by thermal spraying had better not be too big.However on the other hand, small in order to crush
It is necessary to have the bumps of the surface roughness above to a certain degree for wheat etc., such concave-convex in order to be realized by spraying epithelium, need
Film thickness that will be above to a certain degree.In order to solve this problem, as long as the surface roughness of substrate is made to reflect the surface of powder roller processed
Roughness.I.e., it is preferable that relative to the surface roughness Ra of the powder roller processed after coating process, the surface of above-mentioned substrate is thick
Rugosity Ra is adjusted in the range of -2~+8 μm.Thus, it is possible to the film thickness for spraying epithelium is limited in minimum limit, and to system
Powder roller assigns necessary surface roughness.
Preferably, the vickers hardness hv on the surface of the powder roller processed after above-mentioned coating process is greater than 1000.It greatly mentions as a result,
The high wearability of powder roller processed.
There is no restriction for above-mentioned sprayed on material, but particularly preferably carbide cermet.It is made pottery by using carbide metal
Porcelain can be readily available the high surface hardness of powder roller processed (specifically, being greater than in terms of vickers hardness hv as sprayed on material
1000 value), so as to obtain good wearability.
Preferably, the average thickness of above-mentioned spraying epithelium is 10~150 μm.If spraying the average thickness of epithelium less than 10
μm, then durability is troubling in the case of long-term use, and on the other hand, if it is greater than 150 μm, then rub heat storage
Problem is troubling.
In the manufacturing method of above-mentioned powder roller processed, it can also include: adjustment process A, be sprayed after above-mentioned coating process
Ball processing keeps the micro concavo-convex in the fluctuating (undulation) of above-mentioned spraying epithelial surfaces smooth as post-processing.As a result, can
It enough prevents the cereal crushed from adhering to and is blocked in the fluctuating of spraying epithelial surfaces.
It can also include: adjustment process B in the manufacturing method of above-mentioned powder roller processed, be carried out after above-mentioned coating process
Peak clipping handles (peak cut treatment) as post-processing, planarizes the tip of the protrusion of above-mentioned spraying epithelial surfaces.
Thereby, it is possible to reduce the position of spraying epithelial surfaces and cereal point contact, wearability is improved.
The effect of invention
Powder roller processed manufactured according to the present invention can be obtained by being present in the spraying epithelium with water retaining function on surface layer
To the cooling of cereal.Form spraying epithelium is the base for increasing surface area and surface roughness by implementing spray treatment
Material can prevent the removing of spraying epithelium.Using the high cooling of spraying epithelium, cereal band heat in powder process processed can be prevented,
Inhibit the drying of cereal.Thereby, it is possible to make cereal keep amount of moisture appropriate, it is hereby achieved that good cereal powder.
Detailed description of the invention
Fig. 1 be using the first embodiment of the present invention is related to powder roller processed manufacturing method manufacture flat roll solid
Figure.
Fig. 2 is the enlarged cross-sectional view on the surface layer of flat roll in Fig. 1.
Fig. 3 be indicate each material to be tested surface temperature reach predetermined temperature until time chart.
Fig. 4 is the schematic diagram of the spray treatment in roughing in surface process.
Fig. 5 (a) is the enlarged cross-sectional view on the surface layer before carrying out bead, is (b) table carried out after bead
The enlarged cross-sectional view of layer.
Fig. 6 is the cross-sectional view for carrying out the surface layer of peak clipping before and after the processing.
Fig. 7 (a) is the breaker roll of the manufacturing method manufacture for the powder roller processed being related to using second embodiment of the present invention
Partial perspective view, (b) be breaker roll surface portion enlarged cross-sectional view.
Fig. 8 is the enlarged cross-sectional view on the surface layer of the circular mark part of breaker roll in Fig. 7.
Description of symbols
1: flat roll
1a: the surface of flat roll
2: roller substrate
2a: the surface of roller substrate
3: spraying epithelium
5: hole
T: thickness
10: breaker roll
10a: the surface of breaker roll
11: groove
12: top
13: roller substrate
13a: the surface of roller substrate
14: spraying epithelium
15: hole
20: jet blower
21: projection material
Specific embodiment
The embodiments of the present invention will be described with reference to the drawings.Fig. 1 be using the first embodiment of the present invention is related to
Powder roller processed manufacturing method manufacture flat roll (powder roller processed) 1 perspective view, Fig. 2 is the enlarged section on the surface layer of flat roll 1
Figure.In Fig. 1, two 1 configured in parallel of flat roll.It is circular 2 (base of roller substrate that the flat roll 1 of present embodiment, which has section,
Material), spraying epithelium 3 is formed on the surface 2a of the roller substrate 2.It should be noted that powder roller processed of the invention is in addition to flat roll, broken
Other than broken roller, any type of roller used in powder process processed is applied also for.In an example of actually powder process processed, Fig. 1
Shown in flat roll 1 two states are set side by side, side rotates respectively inwards reversely with each otherly, supply paddy between two rollers
Object carries out crushing, the progressive operation of cereal.
The flat roll 1 of present embodiment can be by any cereal powder.As the concrete example of cereal, can enumerate wheat,
Barley, oat, pearl barley, corn, rye, buckwheat, barnyard grass, grain, broomcorn millet, chinese sorghum, sorghum, wild rice etc..These cereal can individually make
With one kind, can also be applied in combination two or more.Wheat, barley particularly preferably suitable for these cereal.As deriving from
The flour of wheat can enumerate Strong flour, half Strong flour, Plain flour, Self- raising flour, wholemeal, Du Lan wheat flour.
There is no restriction for the size and shape of each sections such as roller diameter, the length of flat roll 1.Composition is formed with spraying epithelium 3
The material of roller substrate 2 be applicable to powder roller processed, as long as being capable of forming the materials of various spraying epitheliums.As composition roller
The material of substrate 2 is suitable for using metal material.As the concrete example of metal material, for example, can enumerate selected from Fe, Cr, Ni,
Metal in Mo, Co, Cu, Mn, Zn, Ta, W, Al, Ti, Mg or the hardened steel containing one or more of these metals, no
Become rusty the alloys such as steel.Such metal material can the forming such as molding by extrusion, machining, plastic processing, forging.
Spraying epithelium 3 high speed impact and can be deposited on roller base in the state of being softened or melted by various sprayed on material
It is formed on the surface 2a of material 2.There is no restriction for sprayed on material, but preferably with the ceramics or cermet of high rigidity.
As by ceramics be used as sprayed on material when concrete example, can enumerate containing be selected from Ni, Cr, Co, Al, Ta, Y, W,
Oxide system ceramics, the nitride ceramics, carbide of one or more of Nb, V, Ti, B, Si, Mo, Zr, Fe, Hf, La element
System's ceramics, boride system ceramics and their mixture.
As oxide system ceramics, Al can be enumerated2O3、Cr2O3、HfO2、La2O3、TiO2、Y2O3、ZrO2、Al2O3·
SiO2、NiO、ZrO2·SiO2、SiO2,MgO,CaO.As nitride ceramics, TiN, TaN, AlN, BN, Si can be enumerated3N4、
HfN、NbN、YN、ZrN、Mg3N2、Ca3N2.As carbide system ceramics, TiC, WC, TaC, B can be enumerated4C、SiC、HfC、ZrC、
VC、Cr3C2.As boride system ceramics, TiB can be enumerated2、ZrB2、HfB2、VB2、TaB2、NbB2、W2B5、CrB2、LaB6。
Cermet material made of metal material and ceramic material Composite also is used as sprayed on material.It makes pottery as metal
Ceramic material, can enumerate will be selected from Cr3C2、TaC、WC、NbC、VC、TiC、B4C、SiC、CrB2、WB、MoB、ZrB2、TiB2、
FeB2、CrN、Cr2N, the ceramic material in TaN, NbN, VN, TiN, BN with selected from Ni, Cr, Co, Al, Ta, Y, W, Nb, V, Ti, B,
Cermet material made of metal material Composite in Si, Mo, Zr, Fe, Hf, La etc..Wherein, carbide cermet holds
High rigidity epithelium is easily obtained, is particularly suitable for.
The surface for spraying epithelium 3 is unsealed, and there are a large amount of holes 5 for the inside of spraying epithelium 3.By in these holes 5
Inside keep moisture, spraying epithelium 3 have high-moisture-retention.Thereby, it is possible to the surface layers to flat roll 1 to assign water-retaining property, prevent
Cereal band heat in powder process processed, and the cooling to cereal is obtained, inhibit the drying of cereal.Moreover, by protecting cereal
Using the concave-convex surface ground cereal of flat roll 1 while holding appropriate amount of moisture, good cereal powder can get.
The mean porosities for spraying epithelium 3 can be 0.5~15% or so, preferably 2.0~10%.The tune of mean porosities
It is whole to be carried out by selection heat spraying method and thermal spraying condition.Hole 5 inside spraying epithelium 3 can keep moisture well
Mean porosities be 2.0% or more.However, if mean porosities increase, it, also can be troubling although water-retaining property rises
The decline of wearability.Therefore, from the viewpoint of maintaining wearability, mean porosities are preferably 10% or less.
The adjustment of porosity is effective using following methods in hot-spraying technique.That is, selection is used to form the spray of epithelium
Particle speed, adjustment thermal spraying distance when painting material particle size, adjustment thermal spraying.For example, in the porosity for reducing spraying epithelium
In the case where forming dense material, the powder of fine particle size can be used as sprayed on material, further preferably particle speed
High powder.Furthermore it is possible to select for thermal spraying distance to be set to it is shorter so that heat flux reach epithelium will not be due to fuel factor
The degree of rupture.On the other hand, perforated membrane is formed in order to increase porosity, is using the method that method contrary to the above forms a film
Effectively.However, above-mentioned adjustment is necessarily limited to not damage other epithelium characteristic journeys such as hardness, wearability, surface shape maintenance
The change of degree.
In order to verify the heat transfer characteristic of the water content based on spraying epithelium, following experiment is carried out.It is first when being tested
First, following material to be tested A~C respectively prepares two samples, and material to be tested D prepares a sample.
Substrate: stainless steel
Substrate sizes: side length 5cm, thickness 5mm
Injection conditions: alumina particle (#60), pressure 0.4MPa
Sprayed on material: WC-CrNi
Heat spraying method: high speed flame spraying method (HVOF)
Porosity: 2~4% (using SEM with 200 times of observation sections.It is deviated according to locating.According to section
SEM-BEI image, the black portions inside epithelium are considered as hole, calculate ratio of the hole relative to entire epithelium.)
Spray film thickness: 50 μm (material to be tested A1, A2), 100 μm (material to be tested B1, B2), 150 μm (material to be tested C1,
C2), without spraying (material to be tested D)
Originally spraying epithelium will be made sufficiently to contain moisture on the respective surface material to be tested A1, B1, C1 by water droplet.Surface
Remaining moisture is gently wiped with Kim Towel.The board-like of 100 DEG C of holding is arranged in material to be tested A1~C1 containing moisture
On heater (plate heater), the surface temperature of each material to be tested is measured with contact tehermometer.Measure and record surface
Temperature reaches 40 DEG C, 60 DEG C, 80 DEG C of time.
Material to be tested A2, B2, C2, D are arranged on the baffle heater for being kept for 100 DEG C, are measured with contact tehermometer
The surface temperature of each material to be tested.It measures and records surface temperature and reaches 40 DEG C, 60 DEG C, 80 DEG C of time.
According to these measurement records, the heat transfer characteristic based on film thickness difference, water content difference is verified.Such as table 1
With shown in Fig. 3, there is following result: all samples are in the case where temperature rises to 40 DEG C regardless of whether all almost not having containing moisture
It is variant, but the time of the spraying epithelium arrival target temperature at 80 DEG C containing moisture is longer.From the foregoing, it will be observed that no matter film thickness such as
What, the spraying epithelium containing moisture can more inhibit temperature to rise.
Table 1
The average thickness t of spraying epithelium 3 can be suitably set, preferably 10~150 μm, more preferably 20~100 μm.If
The too small then durability of average thickness t for spraying epithelium 3 is troubling, and is will lead to if excessive due to frictional heat etc. and stored
Heat in roller substrate 2 increases, and promotes the grain dry in powder process processed.In particular, ceramics and the usual thermal conductivity of cermet
Rate is lower than metal, therefore to metal material thermal spraying ceramic or cermet, it should be noted that this point.
The value of surface roughness Ra relative to final smooth target roller 1, the surface roughness Ra adjustment of roller substrate 2
For -2~+8 μm of range.In other words, the surface roughness Ra of flat roll 1 reflects the surface roughness Ra of roller substrate 2.Separately
Outside, the spraying epithelium 3 of present embodiment is formed as the uniform epithelium of thickness t, so that the surface roughness Ra of roller substrate 2 reflects
The surface roughness Ra of flat roll 1.Uniformly referring to herein, the maximum gauge of same epithelium and minimum thickness are respectively at average
Within ± the 30% of thickness.
In addition, form spraying epithelium 3 is to have adjusted surface roughness and increase the roller of surface area and surface roughness
The surface 2a of substrate 2, therefore the removing of spraying epithelium 3 can be prevented.It, can be in roller substrate 2 and spray in order to improve adaptation etc.
It applies and priming coat (undercoat layer) is set between epithelium 3.
From the viewpoint of the crushing of cereal, classification, the surface roughness Ra of flat roll 1 is 5~15 μm.Thus, it is possible to
Obtain good cereal powder.The surface hardness of the surface 1a of flat roll 1 is high, and surface hardness is adjusted in terms of vickers hardness hv
Value greater than 1000.Thus, it is possible to improve the wearability of flat roll 1.
Hereinafter, enumerating surface is formed with an example for spraying the manufacturing method of flat roll 1 of epithelium 3.Successively carry out table
Face is roughened process and coating process, and in roughing in surface process, the surface 2a of roller substrate 2 is roughened, right in coating process
The surface 2a of roller substrate 2 carries out cleaning treatment, and sprayed on material is sprayed on roller substrate 2, and being formed has the hole 5 for keeping moisture
Spraying epithelium 3.It sometimes, further include the other processes such as preheating procedure according to the type of the type of substrate and sprayed on material.
In roughing in surface process, as shown in figure 4, by carrying out making to project material 21 from jet blower (blast nozzle)
The spray treatment of the surface 2a of 20 impact roll substrates 2 forms bumps in the surface 2a of roller substrate 2.Injection refers to, empty using compression
Gas etc. sprays shaggy particle (gravel) on the surface of the substrate, by the roughened method of substrate surface.Relative to rear
The surface roughness Ra of powder roller processed after the coating process of continuous process, the roughness of the surface 2a of roller substrate 2 is at -2~+8 μm
In the range of.As processing conditions, type and granularity, injection pressure, spray treatment time of blasting materials etc. are suitably set.Separately
Outside, according to spray treatment, roller substrate can singly be handled.In the past, using at two of rotation reversely with each other
Intermediary is inserted between roller, the method for assigning same surface roughness respectively to a pair of rolls, and if it is spray treatment, then may be used
Individually to provide the surface roughness Ra of each powder roller processed, therefore can be according to using purpose flexibly to change design, so that for example
A pair of powder roller is respectively provided with different surface roughness Ras.
As for obtaining the heat spraying method of spraying epithelium 3 in coating process, air plasma spraying can be enumerated
Method, low-voltage plasma spraying method, high speed flame spraying method, gas flame spraying method, electric arc spraying, detonation flame spraying method etc..For
Make to spray epithelium 3 and be able to maintain moisture, can suitably select these heat spraying methods, and in turn according to the heat spraying method
Suitably set the thermal sprayings conditions such as type, heat source temperature, thermal spraying angle, the thermal spraying distance of sprayed on material.
In the case where hot spraying metal ceramic, high speed flame spraying method (HVOF) is particularly suitable for.The heat spraying method is
Using the burning capacity of burning gases as the heat spraying method of heat source, by improving the pressure of combustion chamber, generation and explosive combustion
The high-speed flame that flame is mutually equal to accelerates the center that sprayed on material is supplied to the combustion flame jet stream, becomes melting or half
Molten condition, the heat spraying method that high speed is continuously sprayed.It, can since the sprayed particle of melting impacts substrate with supersonic speed
Form the spraying epithelium 3 with high closing force.Kerosene, the H as burning gases can be used in fuel as heat source2Gas, with
And with carbon and hydrogen acetylene as main component, ethylene, propane etc..
In the case where thermal spraying ceramic, plasma spraying method is especially suitable.Plasma spraying method is to utilize plasma
Hot spraying material makes it be melted into liquid sprayed particle, makes the sprayed particle with high speed impact by plasma jet
The face to be filmed of substrate and the heat spraying method carried out.Argon gas, hydrogen and nitrogen are used by the plasma spraying method of heat source of electric energy
Gas etc. forms a film as plasma source, can be by Gao Rong since heat source temperature is high, frame rate (frame rate) is high
Point material filming.
It is formed on the surface 2a of roller substrate 2 after spraying epithelium 3, then, can be carried out for adjusting spray as described above
Apply the adjustment process of the surface shape of epithelium 3.Thus, it is possible to obtain surface texture corresponding with usage.
Preferably, implement bead (adjustment process A) after forming spraying epithelium 3.Shot-peening refers to, empty using compression
Spherical particle is sprayed on the surface of substrate by gas etc., the method for adjusting the surface shape of substrate.In rising for the surface of spraying epithelium 3
In volt, there are micro concavo-convexes shown in Fig. 5 (a).By implementing bead, as shown in Fig. 5 (b), can make to spray 3 table of epithelium
Micro concavo-convex in the fluctuating in face is smoothened, so as to prevent the cereal crushed from adhering to and be blocked in fluctuating.
After forming spraying epithelium 3, peak clipping processing (adjustment process B) can also be carried out as needed.As peak clipping
Method can enumerate polishing (buffing) etc..By implementing peak clipping processing, as shown in fig. 6, can make to spray 3 surface of epithelium
The tip of protrusion planarizes, so as to improve wearability.It should be noted that can also be cut again after carrying out bead
Peak processing.
This bead and peak clipping processing can singly carry out powder roller processed.Thus, it is possible to individually adjust each
The surface shape of a powder roller processed, therefore can be according to using purpose flexibly to change design.It should be noted that the surface of spraying epithelium 3
The value of roughness Ra changes because peak clipping handles, and in order not to the smashing capability of offense of damage to corn trees and vegetable products, it is preferable that even if being handled in peak clipping
Afterwards, also the surface roughness Ra for spraying epithelium 3 is controlled in above-mentioned numberical range.
According to the manufacturing method of the powder roller processed of above-mentioned present embodiment, by thermal spraying on the surface 2a of roller substrate 2 shape
The bumps on surface layer can be maintained at spraying epithelium 3, therefore long-time uses flat roll 1, smashing capability will not be damaged.Separately
Outside, according to thermal spraying, can by adjusting thermal spraying condition come control in made epithelium the size of hole 5 and exist than
Rate.
Since the spraying epithelium 3 that the manufacturing method by the powder roller processed is formed has the hole 5 for keeping moisture, so can make
Heat is difficult to be transferred to cereal, and since the water-retaining property on the surface layer of flat roll 1 improves, can get the cooling to cereal
Property.In addition, since form spraying epithelium 3 using thermal spraying is to increase surface area and rough surface by implementing spray treatment
The roller substrate 2 of degree, it is possible to prevent the removing of spraying epithelium 3.Therefore, the abrasion and spray on the surface layer of flat roll 1 can be eliminated
The problems such as applying the removing of epithelium 3 improves water-retaining property, and improves the cooling to cereal.By improving cooling, can prevent
Cereal band heat, inhibits the drying of cereal in powder process processed.Thereby, it is possible to make cereal keep amount of moisture appropriate, obtain good
Cereal powder.
The manufacturing method of the powder roller processed of above embodiment is only to illustrate without restricted.In the first embodiment,
The manufacturing method of powder roller processed is used to flat roll to be illustrated, but the manufacturing method is equally applicable to breaker roll.Fig. 7 (a) is
The partial perspective view for the breaker roll 10 that the manufacturing method for the powder roller processed being related to using second embodiment of the present invention is manufactured, (b)
It is the enlarged cross-sectional view of the surface portion of breaker roll 10.In the surface portion of the breaker roll 10, by being machined in entire circle
The plurality of grooves 11 axially extended is formed on week.Each groove 11 is formed as being made of two different inclined surface of tilt angle
Section V-shaped, between adjacent groove 11 exist as outer peripheral surface top 12.
Fig. 8 is the enlarged cross-sectional view on the surface layer of the circular mark part M of breaker roll 10 in Fig. 7 (b).In the roller of breaker roll 10
The surface 13a of substrate 13 is formed with spraying epithelium 14.The spraying material for constituting the material of roller substrate 13, being used to form spraying epithelium 14
The adjustment of porosity in the mean porosities of a large amount of holes 15 that expect, are present in inside spraying epithelium 14, hot-spraying technique sprays
The thickness t of epithelium 14 is suitably set within the above range according to the function of breaker roll.
The surface hardness of the surface 10a of breaker roll 10, the surface roughness Ra relative to final required breaker roll 10
The surface roughness Ra of roller substrate 13 is adjusted to -2~+8 μm of range this point by value, is also suitably set within the above range.
It should be noted that removing cereal epidermis as preceding process before the process for using flat roll, breaker roll 10
Surface roughness Ra is 2~8 μm.
The manufacturing method that surface is formed with the breaker roll 10 of spraying epithelium 14 is identical with first embodiment, successively carries out table
Face is roughened process and coating process, and in roughing in surface process, the surface 13a of roller substrate 13 is roughened, in coating process,
Cleaning treatment is carried out to the surface 13a of roller substrate 13, sprayed on material is sprayed on roller substrate 13, being formed has holding moisture
The spraying epithelium 14 of hole 15.It sometimes, further include other works such as preheating procedure according to the type of the type of substrate and sprayed on material
Sequence.It can also include for adjusting after the surface 13a of roller substrate 13 forms spraying epithelium 14 in the process of present embodiment
Adjustment the process A and B of the surface shape of whole spraying epithelium 14.
According to powder roller specification processed and technique form, the manufacturing method of powder roller processed can also include other processes.Above-mentioned implementation
The structure and process illustrated in mode can be changed within the scope of the effect of the invention, be set as needed
Also there is no limit for the form of other structures and process.The scope of the present invention is defined by the claims, it is intended to be forgiven and claim
All changes in equivalent meaning and scope.
Claims (8)
1. a kind of manufacturing method of powder roller processed, which is characterized in that
The manufacturing method of the powder roller processed includes:
Roughing in surface process carries out spray treatment to the surface of substrate；And
Coating process, sprays sprayed on material on the surface of the substrate of roughing in surface, and being formed has the hole for keeping moisture
Spraying epithelium.
2. the manufacturing method of powder roller processed according to claim 1, which is characterized in that
The surface roughness Ra of powder roller processed after the coating process is 2~15 μm.
3. the manufacturing method of powder roller processed according to claim 1 or 2, which is characterized in that
Relative to the surface roughness Ra of the powder roller processed after the coating process, the substrate after the roughing in surface process
Surface roughness Ra is in the range of -2~+8 μm.
4. the manufacturing method of powder roller processed according to any one of claim 1 to 3, which is characterized in that
The vickers hardness hv on the surface of the powder roller processed after the coating process is greater than 1000.
5. the manufacturing method of powder roller processed according to any one of claim 1 to 4, which is characterized in that
The sprayed on material is carbide cermet.
6. the manufacturing method of powder roller processed according to any one of claim 1 to 5, which is characterized in that
The average thickness of the spraying epithelium is 10~150 μm.
7. the manufacturing method of powder roller processed according to any one of claim 1 to 6, which is characterized in that
The manufacturing method of the powder roller processed includes: adjustment process A, carries out bead after the coating process, is made described
The micro concavo-convex sprayed in the fluctuating of epithelial surfaces is smooth.
8. the manufacturing method of powder roller processed according to any one of claim 1 to 7, which is characterized in that
The manufacturing method of the powder roller processed includes: adjustment process B, and peak clipping processing is carried out after the coating process, is made described
Spray the tip planarization of the protrusion of epithelial surfaces.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016111410 | 2016-06-03 | ||
| JP2016-111410 | 2016-06-03 | ||
| PCT/JP2017/019721 WO2017208998A1 (en) | 2016-06-03 | 2017-05-26 | Method for manufacturing of flour milling roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109219671A true CN109219671A (en) | 2019-01-15 |
| CN109219671B CN109219671B (en) | 2020-08-21 |
Family
ID=60477595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780033569.XA Active CN109219671B (en) | 2016-06-03 | 2017-05-26 | Method for manufacturing powder roller |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20190119802A1 (en) |
| JP (1) | JP6556349B2 (en) |
| CN (1) | CN109219671B (en) |
| WO (1) | WO2017208998A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416909A (en) * | 2021-05-07 | 2021-09-21 | 东华隆（广州）表面改质技术有限公司 | Production method of metal plate belt calendering roller |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT519308A1 (en) * | 2016-10-28 | 2018-05-15 | Gebrueder Busatis Ges M B H | Conveying and processing roller for a harvester |
| US11479841B2 (en) | 2017-06-19 | 2022-10-25 | Praxair S.T. Technology, Inc. | Thin and texturized films having fully uniform coverage of a non-smooth surface derived from an additive overlaying process |
| US10807098B1 (en) | 2017-07-26 | 2020-10-20 | Pearson Incorporated | Systems and methods for step grinding |
| DE102018111621B4 (en) * | 2018-05-15 | 2020-01-23 | Helmut Prihoda | Processes to improve the productivity of grinding plants |
| JP7437128B2 (en) * | 2018-10-25 | 2024-02-22 | 昭和産業株式会社 | Pulverizer for producing flour and method for producing flour using the same |
| EP3927993A1 (en) * | 2019-02-24 | 2021-12-29 | Oerlikon Surface Solutions AG, Pfäffikon | Structured brake disk |
| US10757860B1 (en) | 2019-10-31 | 2020-09-01 | Hemp Processing Solutions, LLC | Stripper apparatus crop harvesting system |
| US10933424B1 (en) * | 2019-12-11 | 2021-03-02 | Pearson Incorporated | Grinding roll improvements |
| EP3845053B1 (en) * | 2020-01-06 | 2024-02-14 | CNH Industrial Belgium N.V. | Crop processor and a manufacturing process for a crop processor |
| DE102022103245A1 (en) * | 2022-02-11 | 2023-08-17 | Sms Group Gmbh | Pipe section, pipe assembly, manufacturing method for pipe section and pipe assembly and use of a pipe assembly |
| FR3134824B1 (en) * | 2022-04-25 | 2024-07-26 | Safran Landing Systems | Method of manufacturing a part comprising a metal substrate covered with a protective layer and a part manufactured according to this method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755033A (en) * | 1993-07-20 | 1998-05-26 | Maschinenfabrik Koppern Gmbh & Co. Kg | Method of making a crushing roll |
| KR19990010706A (en) * | 1997-07-11 | 1999-02-18 | 배경주 | Grinding Rollers for Agricultural Products |
| US20090020638A1 (en) * | 2006-02-20 | 2009-01-22 | Norbert Becker | Grinding Tool with a Coating |
| CN201283297Y (en) * | 2008-09-25 | 2009-08-05 | 河南中原轧辊有限公司 | Frosting grinder roll |
| CN102453910A (en) * | 2010-11-02 | 2012-05-16 | 沈阳大陆激光技术有限公司 | Roller surface laser strengthened coating powder material of roller type crusher |
| WO2013179356A1 (en) * | 2012-05-31 | 2013-12-05 | 日鉄ハード株式会社 | Food processing rollers and manufacturing method for food processing rollers |
| CN104162465A (en) * | 2014-07-18 | 2014-11-26 | 李正安 | Flour mill grinding roller |
| CN205182835U (en) * | 2015-11-11 | 2016-04-27 | 中材装备集团有限公司 | Combined type crushing roller |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2973230B2 (en) * | 1990-11-08 | 1999-11-08 | 静岡製機株式会社 | Grain moisture meter |
| JP3642126B2 (en) * | 1996-10-28 | 2005-04-27 | 株式会社サタケ | Smooth roll matting treatment method and smooth roll obtained by the treatment |
| JP3791135B2 (en) * | 1997-07-04 | 2006-06-28 | 株式会社サタケ | Method for forming smooth roll pear ground and smooth roll formed with pear ground by the formation method |
| JP5015991B2 (en) * | 2008-11-11 | 2012-09-05 | トーカロ株式会社 | Printing roll and method for producing the same |
| JP5868133B2 (en) * | 2011-11-16 | 2016-02-24 | 新日鐵住金株式会社 | Manufacturing method of hearth roll for continuous annealing furnace |
| JP6006513B2 (en) * | 2012-03-23 | 2016-10-12 | 吉川工業株式会社 | Abrasion resistant, heat resistant transport roll and method for producing the same |
-
2017
- 2017-05-26 CN CN201780033569.XA patent/CN109219671B/en active Active
- 2017-05-26 WO PCT/JP2017/019721 patent/WO2017208998A1/en active Application Filing
- 2017-05-26 US US16/306,526 patent/US20190119802A1/en not_active Abandoned
- 2017-05-26 JP JP2018520870A patent/JP6556349B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755033A (en) * | 1993-07-20 | 1998-05-26 | Maschinenfabrik Koppern Gmbh & Co. Kg | Method of making a crushing roll |
| KR19990010706A (en) * | 1997-07-11 | 1999-02-18 | 배경주 | Grinding Rollers for Agricultural Products |
| US20090020638A1 (en) * | 2006-02-20 | 2009-01-22 | Norbert Becker | Grinding Tool with a Coating |
| CN201283297Y (en) * | 2008-09-25 | 2009-08-05 | 河南中原轧辊有限公司 | Frosting grinder roll |
| CN102453910A (en) * | 2010-11-02 | 2012-05-16 | 沈阳大陆激光技术有限公司 | Roller surface laser strengthened coating powder material of roller type crusher |
| WO2013179356A1 (en) * | 2012-05-31 | 2013-12-05 | 日鉄ハード株式会社 | Food processing rollers and manufacturing method for food processing rollers |
| CN104162465A (en) * | 2014-07-18 | 2014-11-26 | 李正安 | Flour mill grinding roller |
| CN205182835U (en) * | 2015-11-11 | 2016-04-27 | 中材装备集团有限公司 | Combined type crushing roller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416909A (en) * | 2021-05-07 | 2021-09-21 | 东华隆（广州）表面改质技术有限公司 | Production method of metal plate belt calendering roller |
Also Published As
| Publication number | Publication date |
|---|---|
| US20190119802A1 (en) | 2019-04-25 |
| CN109219671B (en) | 2020-08-21 |
| JPWO2017208998A1 (en) | 2019-01-24 |
| JP6556349B2 (en) | 2019-08-07 |
| WO2017208998A1 (en) | 2017-12-07 |
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