CN113927257A - Method for processing spiral baffle plate - Google Patents
Method for processing spiral baffle plate Download PDFInfo
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- CN113927257A CN113927257A CN202111381364.5A CN202111381364A CN113927257A CN 113927257 A CN113927257 A CN 113927257A CN 202111381364 A CN202111381364 A CN 202111381364A CN 113927257 A CN113927257 A CN 113927257A
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- fan
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- outer ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a processing method of a spiral baffle plate, which comprises the following processing stages: the step A of inner ring forming, the step B of inner ring hole forming, the step C of outer ring forming and the step D of outer ring hole forming are not necessary, and the step C of outer ring forming and the step D of outer ring hole forming can also be combined in a cross mode for many times. The processing method can realize the industrialized processing of the spiral baffle plate with an ideal structure and fill the technical blank in the field.
Description
Technical Field
The invention relates to the field of chemical machinery manufacturing, in particular to a method for processing a spiral baffle plate.
Background
The spiral baffle plate has wide application, and the spiral baffle plate with a central false pipe hole, the split type spiral baffle plate and the like, wherein one application with great value is a shell-and-tube heat exchanger. In the process industry, the proportion of the shell-and-tube heat exchanger in the total investment of equipment is 40-60%. For centuries, the exploration of various baffle structures has never been stopped because the shell-and-tube heat exchanger is mainly provided with the arched baffles, wherein the spiral baffle structure is provided by experts in 1925, but due to the processing difficulty, the exploration of countless experts and scholars has not been revolutionary breakthrough for centuries.
The field of spiral baffle manufacture today has established consensus that the ideal structure of a spiral baffle plate for use in a shell-and-tube heat exchanger is (as in fig. 1): the spiral curved surface is characterized by a ruled curved surface; no matter how large the outer diameter is, the spiral baffle plate is a whole, and the spiral line of the central hole tends to be a straight line (or the spiral line is close to and attached to the most central heat exchange tube which plays an actual role); the cylindrical surfaces of the holes on the spiral baffle plate are all parallel to the central axis.
In the prior art, the machining means such as forging, direct stretching and the like cannot obtain the spiral baffle plate which meets the requirements that a spiral line of a central hole tends to be a straight line (or the spiral line is close to and attached to a most central heat exchange tube playing a practical role), the curved surface is a straight-line curved surface, and the cylindrical surface of the hole is parallel to the central axis. The prior patent (CN202010558873. X) discloses a processing method for manufacturing a spiral baffle substrate by stretching, splicing and stretching a circular ring plate, wherein the processing object is a technical means of the spiral baffle substrate which does not relate to pipe hole processing, and production practice proves that the processing method has certain technical limitation, namely when the difference value of the inner diameter and the outer diameter of the circular ring plate exceeds more than 40 times of the thickness, because the deformation amounts of the inner spiral line and the outer spiral line are inconsistent, the spiral baffle plate with a central hole spiral line tending to a straight line (or the spiral line is closely attached to a heat exchange pipe which plays a practical role at the center) and the spiral baffle plate with a curved surface shape of a straight grain curved surface can hardly be processed. In fact, the difference between the inner diameter and the outer diameter of the spiral line of the spiral baffle plate exceeds 40 times of the thickness, so the existing machining method cannot realize the industrial machining of the spiral baffle plate with an ideal structure.
Disclosure of Invention
The application provides a processing method of a spiral baffle plate, which solves or partially solves the technical problem that the existing processing method can not realize the industrialized processing of the spiral baffle plate with an ideal structure; the processing method can realize the industrial processing of the spiral baffle plate with an ideal structure.
The application provides a method for processing a spiral baffle plate, which comprises the following processing stages: the method comprises an inner ring forming stage A, an inner ring hole opening stage B, an outer ring forming stage C and an outer ring hole opening stage D, wherein the outer ring forming stage C and the outer ring hole opening stage D are not necessary, and the outer ring forming stage C and the outer ring hole opening stage D can be combined in a crossed mode for multiple times;
the spiral baffle plate in the inner ring forming stage A can be formed by splicing 1-50 circles of spiral fan-shaped ring plates, and the spiral baffle plate in the outer ring forming stage C can be formed by splicing 1-50 circles of spiral fan-shaped ring plates;
the step A of the inner ring forming stage comprises the following steps: a1 blanking, A2 dislocation, A3 multi-piece splicing, A4 stretching, A5 dividing into a plurality of spiral fan-ring plates, A6 adjacent spiral fan-ring plates are spliced with each other, when the spiral fan-ring plate of the circle is the first circle at the inner side, the A6 adjacent spiral fan-ring plates are not needed to be spliced with each other, and when the inner circle consists of a plurality of spiral fan-ring plates, the A1-A6 are repeatedly circulated; if a single-piece forming process is adopted, the step A3 of splicing multiple pieces and the step A5 of dividing into a plurality of spiral fan-shaped ring plates are not needed, and the step A2 of dislocation and the step A4 of stretching can also be combined into one step;
b, the step of the inner ring hole opening stage comprises the following steps: the holes can be selected from partial holes or all holes required for processing products on the formed spiral baffle plate;
the step of the outer ring forming stage is as follows: c1 blanking, C2 dislocation, C3 multi-piece splicing, C4 stretching, C5 dividing into a plurality of spiral fan-ring plates, C6 adjacent spiral fan-ring plates are spliced with each other, when the outer ring is composed of a plurality of spiral fan-ring plates, the steps C1-C6 are repeatedly circulated, if a single-piece forming process is adopted, the C3 multi-piece splicing and the C5 dividing into a plurality of spiral fan-ring plates are not needed, and the C2 dislocation and the C4 stretching can also be combined into one step;
d, the step of the outer ring hole opening stage comprises the following steps: d1 processing partial holes and D2 turning-over the rest holes, if the holes needed by the product can be finished at one time, the holes do not need to be turned over;
1 or more circles of the spiral sector ring plates of the inner circle A and the outer circle C can also be formed by adopting a rolling method.
Preferably, the outer diameter of the spiral baffle plate is 50-10000 mm, the diameter of a hole processed by the spiral baffle plate is 6-200 mm, and the thickness of the spiral baffle plate is 1-50 mm.
Preferably, the spiral baffle is made of metal.
Preferably, the hole can be processed by one or more of wire cutting, water jet cutting, laser cutting or drilling and milling.
Preferably, the blanking in the step A1 and the blanking in the step C1 are fan-shaped rings, the fan-shaped rings can be formed by splicing 1-50 small pieces, and the angle of each fan-shaped ring is 1-719 degrees.
Preferably, the combination of different thickness dimensions can be used for the spiral ring plates of either the inner ring or the outer ring, but it is more preferable to use spiral ring plates of uniform thickness.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the spiral baffle plate manufactured by the method for processing the spiral baffle plate has good interchangeability, the spiral surface of the spiral baffle plate (shown in figure 1) obtained by processing can be ensured to be a straight-line curved surface (a straight line perpendicular to an axis is swept around the axis in a spiral mode), the straight-line curved surface spiral baffle plate is not disconnected from the axis to the outer diameter, a central hole spiral line tends to be a straight line, cylindrical surfaces of all pipe holes of the baffle plate are parallel to the axis, then the spiral baffle plate meeting the requirement of form and position accuracy indexes is obtained, and the technical blank in the field is filled.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a straight-line curved spiral baffle provided in an embodiment of the present application;
FIG. 2 is a schematic process diagram of 4 stages of a processing method provided in an embodiment of the present application;
fig. 3 is a circuit diagram of a forming process of a1 st (innermost) circle of a spiral sector ring plate of an inner circle provided by an embodiment of the present application;
FIG. 4 is a circuit diagram of a forming process of the n-th (non-innermost) turn of the spiral sector ring plate of the inner ring according to an embodiment of the present disclosure;
FIG. 5 is a circuit diagram of a forming process of the outer ring spiral sector ring plate according to an embodiment of the present application;
FIG. 6 is a circuit diagram of a process of forming before opening holes according to an embodiment of the present disclosure;
fig. 7 is a circuit diagram of a process of forming and opening repeated intersection provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The machining method of the spiral baffle plate is divided into 4 stages (as shown in an attached figure 2), namely an A inner ring forming stage, a B inner ring hole opening stage, a C outer ring forming stage and a D outer ring hole opening stage, and if the diameter of the spiral baffle plate is not large, only the A inner ring forming stage and the B inner ring hole opening stage are needed. The reason for dividing the large diameter spiral baffle into 4 stages is: 1) the holes of the inner ring are particularly difficult to machine, particularly the holes are machined at the large inclination angle close to the axis, machining methods such as linear cutting and hole forming are needed, after the inner ring is formed, the holes are machined firstly, then the outer ring is spliced, and then the holes are machined, so that the size and difficulty of equipment for forming the holes in the inner ring are greatly reduced; 2) the positioning reference can be used after the inner ring is perforated, and the problem of searching and positioning the relative position of the outer ring perforated hole is effectively solved.
In the process of stretching and forming the sector plate into the spiral sector plate, the circumference L11 of the inner circular arc of the sector plate corresponds to the length L12 of the inner spiral line of the spiral sector plate, and the circumference L21 of the outer circular arc of the sector plate corresponds to the length L22 of the outer spiral line of the spiral sector plate, and is obtained by theoretical calculation: (L11-L12) ≠ (L21-L22), and the deformation of the inner spiral line and the outer spiral line in the forming process of the spiral fan-ring plate is inconsistent, when the difference value of the inner diameter and the outer diameter of the fan-ring plate is smaller, the difference value of the deformation inconsistency is smaller, the spiral fan-ring plate with the straight-line curved surface characteristic is easier to obtain, when the difference value of the inner diameter and the outer diameter of the fan-ring plate exceeds more than 40 times of the wall thickness, the spiral fan-ring plate with the straight-line curved surface characteristic can hardly be obtained by stretching, so the spiral fan-ring plate with the difference value of the inner diameter and the outer diameter exceeding more than 40 times of the wall thickness can be obtained only by splicing a plurality of spiral fan-ring plates.
The forming stage of the inner ring A can be formed by splicing 1-50 circles of spiral fan-ring plates, the forming process of the spiral fan-ring plates of the inner ring is divided into a1 st circle (innermost circle) of spiral fan-ring plate forming process (shown in an attached drawing 3) and an nth circle (non-innermost circle) of spiral fan-ring plate forming process (shown in an attached drawing 4), and the difference between the 1 st circle of spiral fan-ring plate forming process and the nth circle of spiral fan-ring plate forming process is that an inner spiral line tends to be a straight line after the 1 st circle of spiral fan-ring plate is formed, and the inner spiral line is approximately intersected with an outer spiral line of a semi-finished baffle plate after the nth circle of spiral fan-ring plate is formed. The forming process of the inner ring spiral fan ring plate can be divided into the following steps: 1) a multi-sheet molding process; 2) a single-chip indirect forming process; 3) a single piece direct forming process. The process for molding the plurality of the inner ring spiral fan ring plates comprises the following steps: a1 blanking, A2 dislocation, A3 multi-piece splicing, A4 stretching and A5 segmentation, which can be specifically as follows: and dividing the stretched plurality of inner ring spiral fan ring plates into a plurality of independent inner ring spiral fan ring plates.
The single-chip indirect forming process of the inner ring spiral fan ring plate comprises the following steps: a1 blanking, A2 dislocation and A4 stretching are specifically as follows: the two radial end parts of the fan-shaped annular plate are staggered firstly, and then the staggered fan-shaped annular plate is stretched to form the inner ring of the spiral baffle plate. The single-piece direct molding process of the inner ring spiral fan ring plate comprises the following steps: blanking A1 and stretching A4, and specifically comprises the following steps: the fan-shaped annular plate is directly stretched to form the inner ring of the spiral baffle plate.
And C, the outer ring forming stage can be formed by splicing 1-50 circles of spiral fan-shaped ring plates, the forming process of the outer ring spiral fan-shaped ring plates is shown as the attached drawing 4, and the inner spiral line of the n-th circle of spiral fan-shaped ring plates is approximately intersected with the outer spiral line of the semi-finished baffle plate after being formed. The outer ring spiral fan ring plate forming process can be divided into the following steps: 1) a multi-sheet molding process; 2) a single-chip indirect forming process; 3) a single piece direct forming process. The process for molding the plurality of pieces of the outer ring spiral fan ring plate comprises the following steps: c1 blanking, C2 dislocation, C3 multi-piece splicing, C4 stretching and C5 segmentation, which can be specifically as follows: and dividing the plurality of stretched outer ring spiral fan-shaped plates into a plurality of independent outer ring spiral fan-shaped plates by axial line sections.
The single-chip indirect forming process of the outer ring spiral fan ring plate comprises the following steps: c1 blanking, C2 dislocation and C4 stretching, which can be specifically as follows: the two radial end parts of the fan-shaped annular plate are staggered firstly, and then the staggered fan-shaped annular plate is stretched to form the outer ring of the spiral baffle plate. The single-piece direct molding process of the outer ring spiral fan ring plate comprises the following steps: c1 blanking and C4 stretching, which can be specifically as follows: the fan-shaped annular plate is directly stretched to form the outer ring of the spiral baffle plate.
And after the forming stage of the inner ring A is finished, the hole is processed, the inner ring can be formed by 1-50 circles of spiral fan-shaped ring plates, when the size of the baffle plate is small, the hole is processed once or for many times, if the size of the baffle plate is overlarge, all or part of holes of the inner ring are processed, then the C outer ring forming stage and the D outer ring hole opening stage are carried out, the outer ring can be formed by 1-50 circles of spiral fan-shaped ring plates, and the C outer ring forming stage and the D outer ring hole opening stage can be crossed for 1 time or for many times. D, the step of the outer ring hole opening stage comprises the following steps: d1 processing partial holes and D2 turning-over the rest holes, if the holes needed by the product can be finished at one time, the step D2 of turning-over the rest holes is not needed; in addition, the outer ring is provided with an outer ring hole which takes the inner ring hole as a positioning reference, and the outer ring hole is arranged on the outer ring of the spiral baffle plate in the direction from the central hole to the outer edge.
The spiral sector ring plate with 1 or more circles of the inner circle A and the outer circle C can be formed by adopting a rolling method, namely a method for processing a packing auger by a rolling forming machine through a steel belt is adopted, the spiral sector ring plate manufactured by the method has thick inner spiral line and thin outer spiral line, and is only suitable for the condition that the diameter difference of the inner spiral line and the outer spiral line is small.
Detailed description of the preferred embodiment
Referring to the attached drawings, a straight-line curved surface spiral baffle plate with the external diameter of 1000mm, the screw pitch of 500mm and the thickness of 5mm for a shell-and-tube heat exchanger is processed by the following processing method:
a1 blanking fan-ring plate has an inner diameter of about 200mm, an outer diameter of about 350mm, a fan-ring angle of 359 degrees and a thickness of 5mm, each plate is subjected to A2 dislocation respectively, then A3 multiple plates are spliced, the concentricity of each plate can be controlled by adopting a welding mode for splicing, then A4 is stretched until the screw pitch of the plate is about 500mm, then the plate is disassembled, and A5 segmentation work is carried out to obtain the 1 st small circle of the spiral baffle plate with an inner spiral wire diameter of about 15mm and an outer spiral wire diameter of about 165 mm.
A1 blanking fan ring plate has an inner diameter of about 250mm, an outer diameter of 450mm, a fan ring angle of 359 degrees and a thickness of 5mm, each plate is subjected to A2 dislocation respectively, then A3 multiple plates are spliced, the concentricity of each plate can be controlled by adopting a welding mode for splicing, then A4 stretching is carried out, the plates are disassembled after the pitch of the plates is about 500mm, A5 segmentation work is carried out, the 2 nd small circle of the spiral baffle plate with an inner spiral wire diameter of about 165mm and an outer spiral wire diameter of about 365mm is obtained, the adjacent spiral fan ring plates of A6 are spliced with each other, and the spiral baffle plate with an inner spiral wire diameter of about 15mm, an outer spiral wire diameter of about 365mm and a thickness of about 5mm is obtained.
And (5) in the step of opening the hole in the inner ring B, processing 5-20 holes with larger inclination angles in the middle of the formed spiral baffle plate.
C1 blanking fan ring plate inner diameter is about 415mm, outer diameter is 715mm, fan ring angle is 359 degrees, thickness is 5mm, 1) when adopting the multi-piece forming process, the steps are as follows: c2 dislocation is carried out on each plate, then C3 plates are spliced, the splicing can adopt a welding mode, the concentricity of each plate is controlled, then C4 stretching is carried out, the plates are disassembled until the screw pitch of the plates is about 500mm, and C5 segmentation work is carried out; 2) when a single-piece indirect forming process is adopted, the steps are as follows: c2 dislocation is carried out on each plate respectively, and then C4 stretching is carried out until the pitch of the plates is about 500 mm; 3) when a single-piece direct forming process is adopted, the steps are as follows: each sheet was subjected to C4 stretching until the pitch of the sheet was about 500 mm. The three processes can obtain the 3 rd small circle of the spiral baffle plate with the inner spiral diameter of 365mm and the outer spiral diameter of 665mm, and the adjacent spiral fan-ring plates of C6 are spliced with each other to obtain the spiral baffle plate with the inner spiral diameter of about 15mm, the outer spiral diameter of about 665mm and the thickness of about 5 mm.
C1 blanking fan ring plate internal diameter is about 700mm, external diameter 1035mm, fan ring angle 359 degrees, thickness 5mm, in view of material saving, fan ring plate can be made by splicing a plurality of small angle, for example, 6 fan ring plates with fan ring angle about 59 degrees are spliced into a fan ring plate with fan ring angle about 356 degrees. 1) When a multi-piece molding process is adopted, the steps are as follows: c2 dislocation is carried out on each plate, then C3 plates are spliced, the splicing can adopt a welding mode, the concentricity of each plate is controlled, then C4 stretching is carried out, the plates are disassembled until the screw pitch of the plates is about 500mm, and C5 segmentation work is carried out; 2) when a single-piece indirect forming process is adopted, the steps are as follows: c2 dislocation is carried out on each plate respectively, and then C4 stretching is carried out until the pitch of the plates is about 500 mm; 3) when a single-piece direct forming process is adopted, the steps are as follows: each sheet was subjected to C4 stretching until the pitch of the sheet was about 500 mm. The 4 th small circle of the spiral baffle plate with the inner spiral diameter of about 665mm and the outer spiral diameter of about 1000mm can be obtained by the three processes, and the adjacent spiral fan-ring plates of C6 are spliced with each other to obtain the spiral baffle plate with the inner spiral diameter of about 15mm, the outer spiral diameter of about 1000mm, the spiral pitch of about 500mm and the thickness of about 5 mm.
And taking the hole processed in the hole opening stage of the inner ring B as a positioning reference, entering the hole opening stage of the outer ring D, and comprising the following steps: d1 processing partial holes and D2 turning-over the rest holes, if the holes needed by the product can be finished at one time, the step D2 of turning-over the rest holes is not needed.
To this end, a spiral baffle having straight-line curved surface features, a generally linear inner diameter, an outer diameter of about 1000mm, a pitch of about 500mm, and a thickness of about 5mm was fabricated.
In the machining process, the outer ring forming stage C and the outer ring hole forming stage D can be combined in a crossed mode for multiple times, but the significance for improving the efficiency is not great.
In the processing process, 1 or more circles of the spiral sector ring plates of the inner circle A and the outer circle C can be formed by a rolling method, namely a method for processing a packing auger by a steel belt through a rolling forming machine (the method is a mature industrial production technology), the normal thickness of the inner spiral line position of the spiral sector ring plate manufactured by the method is thicker, the normal thickness of the outer spiral line position is thinner, the method is only suitable for the condition that the diameter difference of the inner spiral line and the outer spiral line is smaller, the method can realize processing, but has little significance for improving the efficiency, and does not have economy.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for processing a spiral baffle plate is characterized by comprising the following processing stages: the method comprises an inner ring forming stage A, an inner ring hole opening stage B, an outer ring forming stage C and an outer ring hole opening stage D, wherein the outer ring forming stage C and the outer ring hole opening stage D are not necessary, and the outer ring forming stage C and the outer ring hole opening stage D can be combined in a crossed mode for multiple times;
the spiral baffle plate in the inner ring forming stage A can be formed by splicing 1-50 circles of spiral fan-shaped ring plates, and the spiral baffle plate in the outer ring forming stage C can be formed by splicing 1-50 circles of spiral fan-shaped ring plates;
the step A of the inner ring forming stage comprises the following steps: a1 blanking, A2 dislocation, A3 multi-piece splicing, A4 stretching, A5 dividing into a plurality of spiral fan-ring plates, A6 adjacent spiral fan-ring plates are spliced with each other, when the spiral fan-ring plate of the circle is the first circle at the inner side, the A6 adjacent spiral fan-ring plates are not needed to be spliced with each other, and when the inner circle consists of a plurality of spiral fan-ring plates, the A1-A6 are repeatedly circulated; if a single-piece forming process is adopted, the step A3 of splicing multiple pieces and the step A5 of dividing into a plurality of spiral fan-shaped ring plates are not needed, and the step A2 of dislocation and the step A4 of stretching can also be combined into one step;
b, the step of the inner ring hole opening stage comprises the following steps: the holes can be selected from partial holes or all holes required for processing products on the formed spiral baffle plate;
the step of the outer ring forming stage is as follows: c1 blanking, C2 dislocation, C3 multi-piece splicing, C4 stretching, C5 dividing into a plurality of spiral fan-ring plates, C6 adjacent spiral fan-ring plates are spliced with each other, when the outer ring is composed of a plurality of spiral fan-ring plates, the steps C1-C6 are repeatedly circulated, if a single-piece forming process is adopted, the C3 multi-piece splicing and the C5 dividing into a plurality of spiral fan-ring plates are not needed, and the C2 dislocation and the C4 stretching can also be combined into one step;
d, the step of the outer ring hole opening stage comprises the following steps: d1 processing partial holes and D2 turning-over the rest holes, if the holes needed by the product can be finished at one time, the holes do not need to be turned over;
1 or more circles of the spiral sector ring plates of the inner circle A and the outer circle C can also be formed by adopting a rolling method.
2. The method for processing the spiral baffle plate as claimed in claim 1, wherein the outer diameter of the spiral baffle plate is 50 to 10000mm, the diameter of the hole processed by the spiral baffle plate is 6 to 200mm, and the thickness of the spiral baffle plate is 1 to 50 mm.
3. The method of claim 1 wherein the spiral baffle is made of metal.
4. The method of claim 1, wherein the holes are formed by one or more of wire cutting, water jet cutting, laser cutting, and drilling and milling.
5. The method for processing the spiral baffle plate as claimed in claim 1, wherein the blanking in the step A1 and the blanking in the step C1 are fan-shaped rings, the fan-shaped rings can be formed by splicing 1 to 50 small pieces, and the angle of the fan-shaped rings is 1 to 719 degrees.
6. The method of claim 1 wherein the combination of different thickness dimensions is used for the inner and outer ring of the spiral ring plates.
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| CN202111381364.5A CN113927257B (en) | 2021-11-21 | 2021-11-21 | Processing method of spiral baffle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117655367A (en) * | 2024-01-29 | 2024-03-08 | 山东豪迈机械制造有限公司 | Screw baffle plate perforating equipment and perforating method |
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| GB415325A (en) * | 1934-01-19 | 1934-08-23 | Wellworthy Ltd | A step in the manufacture of piston-rings |
| DE10338180B3 (en) * | 2003-08-17 | 2005-04-28 | Erich Roos | Extruder screw manufacture involves assembling a stack of contored metal plates with spacers between on a screw shaft |
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| CN117655367A (en) * | 2024-01-29 | 2024-03-08 | 山东豪迈机械制造有限公司 | Screw baffle plate perforating equipment and perforating method |
| CN117655367B (en) * | 2024-01-29 | 2024-04-23 | 山东豪迈机械制造有限公司 | Screw baffle plate perforating equipment and perforating method |
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| CN113927257B (en) | 2023-07-14 |
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