CN110271112B - Superfine pore underwater granulation die head assembly and production process thereof - Google Patents
Superfine pore underwater granulation die head assembly and production process thereof Download PDFInfo
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- CN110271112B CN110271112B CN201910659567.2A CN201910659567A CN110271112B CN 110271112 B CN110271112 B CN 110271112B CN 201910659567 A CN201910659567 A CN 201910659567A CN 110271112 B CN110271112 B CN 110271112B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000011148 porous material Substances 0.000 title claims abstract description 15
- 238000005469 granulation Methods 0.000 title abstract description 23
- 230000003179 granulation Effects 0.000 title abstract description 23
- 239000000919 ceramic Substances 0.000 claims abstract description 60
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 7
- 239000010962 carbon steel Substances 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 238000005219 brazing Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 10
- 238000005453 pelletization Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- 238000009413 insulation Methods 0.000 description 9
- 229910010293 ceramic material Inorganic materials 0.000 description 5
- 230000008602 contraction Effects 0.000 description 5
- 239000011882 ultra-fine particle Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- FXNGWBDIVIGISM-UHFFFAOYSA-N methylidynechromium Chemical compound [Cr]#[C] FXNGWBDIVIGISM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/826—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/582—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
- B29C48/3003—Materials, coating or lining therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a superfine pore water granulation die head assembly and a production process thereof, which can solve the technical problems of uneven discharge, frozen pores, die head extrusion and the like of the existing water granulation die head. The die head outer ring is sealed and arranged on the outer side of the granulating die plate, the conical distributor is arranged on the side surface of the middle part of the granulating die plate, the water stop plate is arranged on one side surface of the granulating die plate far away from the conical distributor, the water stop plate and the granulating die plate are fixed through bolts, the granulating die plate consists of a die plate matrix, an alloy granulating belt and a ceramic nozzle, the die plate matrix is a high-chromium carbon steel die plate matrix, the alloy granulating belt is welded on the die plate matrix through an alloy brazing process, the ceramic nozzle is inlaid in the die plate matrix through coating high-strength metal glue, and the ceramic nozzle is in clearance fit with the die plate matrix, and a plurality of micropores are uniformly distributed on the ceramic nozzle.
Description
Technical Field
The invention relates to a superfine pore underwater granulation die head assembly and a production process thereof.
Background
The ultra-fine particle water granulating process has extremely high heat insulation requirement, and the existing alloy granulating templates on the market at present can only realize few occasions with extremely strict operation requirement and ideal use condition. In the united states, germany, swiss almost monopolizes the market, but the alloy and ceramic composite granulating die heads are used, but the ceramic is used as a heat insulating plate, a layer of alloy granulating belt with higher heat conductivity than the ceramic is still arranged outside the heat insulating plate, the heat insulating effect is still not ideal, a lot of heat is still carried away by water flow, heat is preserved by virtue of heat conduction oil penetrating through the outer ring of the die heads, high energy consumption is caused, heat conduction oil supplementing energy still needs to be transferred by a template, a certain time and heat loss are needed, and due to the difference of expansion coefficients of materials used by the heat insulating plate and the granulating template, the die heads are subjected to continuous high-flow water cooling even in an ice water environment in an actual granulating environment, so that concentricity of the heat insulating plate and a discharge hole on the granulating template cannot be ensured, the deviation is extremely fatal in a granulating process in particulate water (especially when the aperture of the superfine hole is smaller than 0.5 mm), the phenomenon of uneven discharge and even freezing hole is extremely easy to cause a phenomenon of die head to be stopped, and extrusion damage and the like can be directly caused.
Disclosure of Invention
The first object of the present invention is to solve the above-mentioned problems of the prior art, and to provide an in-water granulating die head assembly with micro-holes, which can avoid the phenomena of uneven discharge, frozen holes, die head extrusion, etc., and has the advantages of greatly improved working efficiency and low production cost.
The first object of the present invention can be achieved by the following technical scheme: the utility model provides an ultra-fine hole aquatic granulation die head subassembly, its structure includes die head outer lane, granulation template, toper tripper, water stop plate and bolt, die head outer lane seal dress is on the outside of granulation template, the toper tripper is fixed to be set up on the side at granulation template middle part, the water stop plate sets up at the granulation template keep away from on the side of toper tripper, fix through the bolt between toper tripper, water stop plate and the granulation template, the granulation template comprises template base member, alloy granulation area and ceramic nozzle, the template base member is high chromium carbon steel template base member, alloy granulation area pass through alloy brazing process welding on the template base member, ceramic nozzle inlays in the template base member through coating high strength metal glue, and is clearance fit between the two, the equipartition has a plurality of ultra-fine holes on the ceramic nozzle.
By adopting the structure, the ceramic nozzle is manufactured by adopting the ceramic material with the best thermal insulation performance, so that the influence of deformation of the material caused by thermal expansion and cold contraction on the granulating size can be reduced to the greatest extent, and meanwhile, the situation that the size difference exists at the joint part due to the difference of expansion coefficients of different materials of the traditional multi-piece type heat insulation die head can be completely avoided.
The template substrate is provided with a step structure which is convenient for fixing the ceramic nozzle.
By adopting the structure, the ceramic nozzle and the template matrix are matched with each other by adopting the steps and the gaps, and are matched with a special adhesive for sealing, so that the structure is simple, the installation is convenient, and the size of the discharge is not influenced.
The ceramic nozzle adopts yttrium stable ceramic with the heat conductivity of 1000 ℃ and 2.09W/(m.k).
By adopting the mode, the nozzle is manufactured by adopting the ceramic material with the best thermal insulation performance, so that the influence of deformation of the material caused by thermal expansion and cold contraction on the granulating size can be reduced to the greatest extent, namely, in an ice water granulating environment, the ceramic nozzle can still keep the temperature of the material, in addition, the affinity of the ceramic and the plastic is extremely low, ultrafine particles can be ensured not to be adhered to a granulating template when the ultrafine particles are cut off, and the in-water granulating production of the molten liquid material can be realized better.
The high-strength metal glue is aluminum alloy glue.
By adopting the structure, the linear expansion coefficient of the ceramic is close to that of the alloy, so that the aluminum alloy glue can play a good role in fixing and sealing.
The second object of the present invention can be achieved by the following technical scheme: a process for producing an ultra-fine bore underwater pelletizing die assembly comprising the steps of:
1) Manufacturing a template matrix: manufacturing a high-toughness chromium-containing carbon steel forging, and reserving grinding allowance for standby;
2) Manufacturing an alloy granulating belt: preparing a coarse blank by using tungsten steel powder with cobalt or nickel as a binding agent through an injection molding process, and sintering to prepare an alloy granulating belt for later use;
3) Embedding the alloy granulating belt prepared in the step 2) into the template substrate prepared in the step 1) through clearance fit, adding solder, and then placing into a vacuum furnace for sintering welding to obtain a welding piece of the template substrate and the alloy granulating belt;
4) Carrying out finish machining on the template substrate prepared in the step 3) and a welding piece of the alloy granulating belt for later use;
5) Manufacturing of ceramic nozzle: obtaining a ceramic nozzle injection molding piece through injection molding, degreasing and sintering the ceramic nozzle injection molding piece to obtain the superfine pore ceramic nozzle;
6) Embedding the superfine pore ceramic nozzle prepared in the step 5) into a welded part of the finished template matrix and the alloy granulating belt by using high-strength metal glue, and standing for more than 6 hours;
7) And (3) carrying out final planar fine grinding on the bonded granulating template by using a planar grinder and a diamond grinding wheel to obtain a finished product.
By adopting the structure, the ceramic nozzle is produced by using a powder injection molding process, the superfine holes are molded in the injection molding stage, then binder removal, sintering and grinding are carried out, so that a finished product can be obtained, subsequent punching is not needed, namely, the extremely difficult process of post-processing the superfine holes in the traditional structure is thoroughly avoided, the processing and the manufacturing of the superfine holes can be facilitated, and the production cost is low.
As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. the nozzle is the most critical part for controlling the granulating size, adopts ceramic materials with the best heat insulation performance, and furthest reduces the influence of deformation of the materials caused by heat expansion and cold contraction on the granulating size.
2. The ceramic nozzle structure can completely avoid the situation that the size difference exists at the joint part due to the expansion coefficient difference of different materials of the traditional multi-piece type heat insulation die head.
3. The ceramic nozzle and the template matrix are matched with each other by steps and gaps, and are sealed by matching with a special adhesive, so that the ceramic nozzle is simple in structure, convenient to install and free from influencing the discharge size.
4. The ceramic nozzle is produced by using a powder injection molding process, the superfine holes are molded in the injection molding stage, then binder removal, sintering and grinding are carried out to obtain a finished product, and subsequent punching is not needed, so that the extremely difficult process of post-processing the superfine holes in the traditional structure is thoroughly avoided, the processing and the manufacturing of the ceramic nozzle are convenient, and the production cost is low.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a front view of the present microporous underwater pelletizing die assembly;
FIG. 2 is a left side view of the present microporous underwater pelletizing die assembly;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is an enlarged view at C in fig. 2.
In the figure: 1. the die head outer ring 2, the granulating template 21, the template base 21a, the step structure 22, the alloy granulating belt 23, the ceramic nozzle 23a, the superfine pores 3, the conical distributor 4, the water stop plate 5 and the bolts.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Examples
As shown in fig. 1, 2, 3 and 4, the structure of the ultra-fine hole underwater granulation die head assembly comprises a die head outer ring 1, a granulation template 2, a conical distributor 3, a water stop plate 4 and a bolt 5, wherein the die head outer ring 1 is sealed and sleeved on the outer side of the granulation template 2, the conical distributor 3 is fixedly arranged on the side surface of the middle part of the granulation template 2, the water stop plate 4 is arranged on one side surface of the granulation template 2 away from the conical distributor 3, the water stop plate 4 and the granulation template 2 are fixed through the bolt 5, the granulation template 2 consists of a template substrate 21, an alloy granulation belt 22 and a ceramic nozzle 23, the template substrate 21 is a high-chromium carbon steel template substrate, the alloy granulation belt 22 is welded on the template substrate 21 through an alloy brazing process, the ceramic nozzle 23 is embedded in the template substrate 21 through coating high-strength metal glue, and a plurality of ultra-fine holes 23a are uniformly distributed on the ceramic nozzle 23; by adopting the structure, the ceramic nozzle is manufactured by adopting the ceramic material with the best thermal insulation performance, so that the influence of deformation of the material caused by thermal expansion and cold contraction on the granulating size can be reduced to the greatest extent, and meanwhile, the situation that the size difference exists at the joint part due to the difference of expansion coefficients of different materials of the traditional multi-piece type heat insulation die head can be completely avoided.
As shown in fig. 1 and 3, the template base 21 is provided with a step structure 21a for fixing the ceramic nozzle 23; by adopting the mode, the ceramic nozzle and the template matrix are matched with each other in a step and clearance manner, and are sealed by matching with a special adhesive, so that the ceramic nozzle is simple in structure, convenient to install and free from influencing the discharge size.
The ceramic nozzle 23 shown in FIGS. 1, 2 and 3 employs an yttrium stabilized ceramic having a thermal conductivity of 1000 ℃ and 2.09W/(m.k); by adopting the mode, the nozzle is manufactured by adopting the ceramic material with the best thermal insulation performance, so that the influence of deformation of the material caused by thermal expansion and cold contraction on the granulating size can be reduced to the greatest extent, namely, in an ice water granulating environment, the ceramic nozzle can still keep the temperature of the material, in addition, the affinity of the ceramic and the plastic is extremely low, ultrafine particles can be ensured not to be adhered to a granulating template when the ultrafine particles are cut off, and the in-water granulating production of the molten liquid material can be realized better.
The high-strength metal glue is aluminum alloy glue, and in the embodiment, the aluminum alloy glue is an existing product which can be purchased in the market; by adopting the structure, the linear expansion coefficient of the ceramic is close to that of the alloy, so that the aluminum alloy glue can play a good role in fixing and sealing.
The second object of the present invention can be achieved by the following technical scheme: a production process of a superfine pore underwater pelleting die head component comprises the following steps:
1) Manufacturing a template matrix: manufacturing a high-toughness chromium-containing carbon steel forging, and reserving grinding allowance for standby;
2) Manufacturing an alloy granulating belt: preparing a coarse blank by using tungsten steel powder with cobalt or nickel as a binding agent through an injection molding process, and sintering to prepare an alloy granulating belt for later use;
3) Embedding the alloy granulating belt prepared in the step 2) into the template substrate prepared in the step 1) through clearance fit, adding solder, and then placing into a vacuum furnace for sintering welding to obtain a welding piece of the template substrate and the alloy granulating belt;
4) Carrying out finish machining on the template substrate prepared in the step 3) and a welding piece of the alloy granulating belt for later use;
5) Manufacturing of ceramic nozzle: obtaining a ceramic nozzle injection molding piece through injection molding, degreasing and sintering the ceramic nozzle injection molding piece to obtain the superfine pore ceramic nozzle;
6) Embedding the superfine pore ceramic nozzle prepared in the step 5) into a welded part of the finished template matrix and the alloy granulating belt by using high-strength metal glue, and standing for more than 6 hours;
7) And (3) carrying out final planar fine grinding on the bonded granulating template by using a planar grinder and a diamond grinding wheel to obtain a finished product.
By adopting the process, the ceramic nozzle is produced by using a powder injection molding process, the superfine pores are molded in the injection molding stage, then binder removal, sintering and grinding are carried out to obtain a finished product, and subsequent punching is not needed, so that the extremely difficult process of post-processing the superfine pores in the traditional structure is thoroughly avoided, the processing and the manufacturing of the ceramic nozzle can be facilitated, and the production cost is low.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. An ultra-fine bore underwater pelletizing die assembly, characterized in that: the structure of the die head comprises a die head outer ring (1), a granulating template (2), a conical distributor (3), a water stop plate (4) and bolts (5), wherein the die head outer ring (1) is sealed and sleeved on the outer side of the granulating template (2), the conical distributor (3) is fixedly arranged on the side surface of the middle part of the granulating template (2), the water stop plate (4) is arranged on the granulating template (2) and far away from the conical distributor (3) on one side surface, the conical distributor (3), the water stop plate (4) and the granulating template (2) are fixed through the bolts (5), the granulating template (2) is composed of a template matrix (21), an alloy granulating belt (22) and ceramic nozzles (23), the template matrix (21) is a high-chromium carbon steel template matrix, the alloy granulating belt (22) is welded on the template matrix (21) through an alloy brazing process, the ceramic nozzles (23) are inlaid in the template matrix (21) through high-strength metal glue coating, and are in clearance fit, and a plurality of micropores (23 a) are uniformly distributed on the ceramic nozzles (23).
2. The ultra-fine bore underwater pelletizing die assembly of claim 1, wherein: the template base body (21) is provided with a step structure (21 a) which is convenient for fixing the ceramic nozzle (23).
3. The ultra-fine bore underwater pelletizing die assembly of claim 1, wherein: the ceramic nozzle (23) is made of yttrium-stabilized ceramic having a thermal conductivity of 1000 ℃ and 2.09W/(m.k).
4. The ultra-fine bore underwater pelletizing die assembly of claim 1, wherein: the high-strength metal glue is aluminum alloy glue.
5. The process for producing an ultra-fine bore underwater pelletizing die assembly as claimed in claim 1, comprising the steps of:
1) Manufacturing a template matrix: manufacturing a high-toughness chromium-containing carbon steel forging, and reserving grinding allowance for standby;
2) Manufacturing an alloy granulating belt: preparing a coarse blank by using tungsten steel powder with cobalt or nickel as a binding agent through an injection molding process, and sintering to prepare an alloy granulating belt for later use;
3) Embedding the alloy granulating belt prepared in the step 2) into the template substrate prepared in the step 1) through clearance fit, adding solder, and then placing into a vacuum furnace for sintering welding to obtain a welding piece of the template substrate and the alloy granulating belt;
4) Carrying out finish machining on the template substrate prepared in the step 3) and a welding piece of the alloy granulating belt for later use;
5) Manufacturing of ceramic nozzle: obtaining a ceramic nozzle injection molding piece through injection molding, degreasing and sintering the ceramic nozzle injection molding piece to obtain the superfine pore ceramic nozzle;
6) Embedding the superfine pore ceramic nozzle prepared in the step 5) into a welded part of the finished template matrix and the alloy granulating belt by using high-strength metal glue, and standing for more than 6 hours;
7) And (3) carrying out final planar fine grinding on the bonded granulating template by using a planar grinder and a diamond grinding wheel to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659567.2A CN110271112B (en) | 2019-07-22 | 2019-07-22 | Superfine pore underwater granulation die head assembly and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659567.2A CN110271112B (en) | 2019-07-22 | 2019-07-22 | Superfine pore underwater granulation die head assembly and production process thereof |
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| Publication Number | Publication Date |
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| CN110271112A CN110271112A (en) | 2019-09-24 |
| CN110271112B true CN110271112B (en) | 2024-04-02 |
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| CN112078114A (en) * | 2020-08-26 | 2020-12-15 | 北京鸿运汇商贸有限公司 | Self-supporting optical cable sheath extrusion die |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051086A (en) * | 1990-07-27 | 1991-09-24 | Gellert Jobst U | Insulated injection molding nozzle |
| CN2145105Y (en) * | 1993-02-17 | 1993-11-03 | 刘光知 | Heat-insulation type granular making-machine handpiece of force-out machine |
| JP2001030057A (en) * | 1999-07-16 | 2001-02-06 | Kawaguchiko Seimitsu Co Ltd | Vacuum forming apparatus for die casting |
| CN103484744A (en) * | 2013-08-29 | 2014-01-01 | 西南石油大学 | Aluminum oxide base metal ceramic nozzle material and preparation method thereof |
| CN204278465U (en) * | 2014-11-10 | 2015-04-22 | 沈阳鹏达模具制造有限公司 | Granulating head under a kind of steel bonded carbide compound oil heating water |
| CN105583960A (en) * | 2014-11-10 | 2016-05-18 | 沈阳鹏达模具制造有限公司 | Small pelleting system |
| CN210210990U (en) * | 2019-07-22 | 2020-03-31 | 晋江市陆钢塑料机械有限公司 | Superfine hole underwater granulation die head assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101157528B1 (en) * | 2007-07-31 | 2012-06-22 | 도쿄엘렉트론가부시키가이샤 | Nozzle member and process for producing the same |
-
2019
- 2019-07-22 CN CN201910659567.2A patent/CN110271112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051086A (en) * | 1990-07-27 | 1991-09-24 | Gellert Jobst U | Insulated injection molding nozzle |
| CN2145105Y (en) * | 1993-02-17 | 1993-11-03 | 刘光知 | Heat-insulation type granular making-machine handpiece of force-out machine |
| JP2001030057A (en) * | 1999-07-16 | 2001-02-06 | Kawaguchiko Seimitsu Co Ltd | Vacuum forming apparatus for die casting |
| CN103484744A (en) * | 2013-08-29 | 2014-01-01 | 西南石油大学 | Aluminum oxide base metal ceramic nozzle material and preparation method thereof |
| CN204278465U (en) * | 2014-11-10 | 2015-04-22 | 沈阳鹏达模具制造有限公司 | Granulating head under a kind of steel bonded carbide compound oil heating water |
| CN105583960A (en) * | 2014-11-10 | 2016-05-18 | 沈阳鹏达模具制造有限公司 | Small pelleting system |
| CN210210990U (en) * | 2019-07-22 | 2020-03-31 | 晋江市陆钢塑料机械有限公司 | Superfine hole underwater granulation die head assembly |
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| CN110271112A (en) | 2019-09-24 |
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