CN112983884A - Preparation method of reaction injection molding fan impeller and fan impeller - Google Patents

Preparation method of reaction injection molding fan impeller and fan impeller Download PDF

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Publication number
CN112983884A
CN112983884A CN202110179526.0A CN202110179526A CN112983884A CN 112983884 A CN112983884 A CN 112983884A CN 202110179526 A CN202110179526 A CN 202110179526A CN 112983884 A CN112983884 A CN 112983884A
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China
Prior art keywords
fan impeller
fan
impeller
double
reaction injection
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Pending
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CN202110179526.0A
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Chinese (zh)
Inventor
刘畅
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Shanghai Dongjie Polymer Material Co ltd
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Shanghai Dongjie Polymer Material Co ltd
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Application filed by Shanghai Dongjie Polymer Material Co ltd filed Critical Shanghai Dongjie Polymer Material Co ltd
Priority to CN202110179526.0A priority Critical patent/CN112983884A/en
Publication of CN112983884A publication Critical patent/CN112983884A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a preparation method of a reaction injection molding fan impeller and the fan impeller, wherein the method comprises the following steps: firstly, designing a fan impeller double-sided die; adopting thermosetting resin as a raw material of a fan impeller, and preparing the raw material of the fan impeller into two components; closing a fan impeller double-sided mould and vacuumizing; mixing the two components in proportion, pressurizing, and injecting the mixture into a cavity pump in a closed fan impeller double-sided mold; polymerizing the mixture in a double-sided mold of the fan impeller, and performing crosslinking, curing and molding; demolding; and (5) post-treatment. The invention can prepare the large-scale non-metal fan impeller based on the combination of the thermosetting resin raw material and the brand-new reaction injection molding process, breaks through the bottleneck that the non-metal material can only prepare the small-scale fan impeller, has high processing efficiency and high precision, and the prepared fan impeller has the advantages of light weight, stable quality, strong corrosion resistance, acid and alkali resistance, small noise, good dynamic balance performance and the like.

Description

Preparation method of reaction injection molding fan impeller and fan impeller
Technical Field
The invention relates to the technical field of fan impellers, in particular to a method for preparing a fan impeller by reaction injection molding and the prepared fan impeller.
Background
The blower is a machine which increases the pressure of gas and discharges the gas by means of the input mechanical energy. It is a driven fluid machine. In China, a fan is a short habit for gas compression and gas conveying machinery, and the fan generally comprises: ventilators, blowers, wind generators, and the like.
The impeller is a key component of the fan, and the mass and performance of the impeller determine the mass of the whole fan. Most of traditional impellers are made of metal materials through casting and welding, the impeller is unstable in quality and poor in corrosion resistance, severe vibration and huge noise are generated in the operation process, and therefore the motor is unstable in operation and low in efficiency.
In recent years, some non-metal impellers manufactured by injection molding have appeared, and the specific processing procedures are as follows: and injecting molten resin into the cavity of the mold, and taking out an injection molding product from the cavity of the mold after the molten resin injected into the cavity of the mold is cooled and solidified, so as to obtain the injection molding impeller.
However, the conventional non-metal injection molded impeller is relatively small (less than 10 kg), and cannot be enlarged (more than 10 kg) due to the limitation of materials and injection molding process.
The other process method comprises the following steps: the fan impeller is prepared by manually pasting a continuous fiber reinforced composite material. The method is carried out manually, the efficiency is low, and the manufactured product has low precision and large noise.
Disclosure of Invention
The embodiment of the application solves the problems of unstable quality, poor corrosion resistance, small specification, low efficiency, low precision, high noise and the like of the fan impeller prepared by the methods of casting welding, injection molding, manual pasting and the like in the prior art by providing a preparation method of the reaction injection molding fan impeller, and realizes the beneficial effects of difficult deformation, stable quality, strong corrosion resistance, acid and alkali resistance, large specification, high efficiency, high precision, low noise, good dynamic balance performance and the like of the fan impeller by designing a brand new processing technology.
The embodiment of the application provides a method for preparing a fan impeller by reaction injection molding, which comprises the following steps:
designing a fan impeller double-sided die, and placing the fan impeller double-sided die in a press;
adopting thermosetting resin as a raw material of a fan impeller, and preparing the raw material of the fan impeller into A, B two components;
closing the fan impeller double-sided mold, and vacuumizing a cavity in the fan impeller double-sided mold;
mixing the A, B two components in proportion, pressurizing, and injecting the mixture into a cavity pump in a closed fan impeller double-sided mold; polymerizing the mixture in a double-sided mold of the fan impeller, and performing crosslinking, curing and molding;
and opening the fan impeller double-sided die and demolding.
And (5) carrying out post-treatment on the fan impeller product after demoulding.
Preferably, the fan impeller double-sided die comprises an upper die and a lower die which can be opened and closed, and when the upper die and the lower die are closed, a cavity matched with the shape and the specification of a fan impeller to be prepared is formed between the upper die and the lower die.
Preferably, the raw material of the fan impeller is polyurethane, and the polyurethane raw material is prepared into A, B two components, wherein the component A is polyol, and the component B is diisocyanate.
Preferably, polydicyclopentadiene is adopted as a raw material of the fan impeller, and the polydicyclopentadiene is prepared into A, B two components, wherein the component A is polydicyclopentadiene and an auxiliary agent, and the component B is a catalyst.
Preferably, the A, B two components are mixed in proportion, and the specific method for pressurizing is as follows: the A, B two components are respectively added into a mixing head according to the proportion, and the mixing head is pressurized to uniformly mix the A, B two components.
Preferably, the step of post-treating the fan wheel product after demolding comprises:
brushing a water-based environment-friendly paint primer on the fan impeller product;
trimming the edges of the fan wheel article;
brushing water-based environment-friendly finish paint on the fan impeller product;
heat treating the fan wheel article;
inspecting the heat-treated fan impeller product;
and packaging the fan impeller product.
The embodiment of the present application further provides a reaction injection molding fan wheel, which is characterized in that, includes:
the fan impeller comprises an integrally formed fan impeller main body, wherein the integrally formed fan impeller main body comprises a first side plate, a central shaft is arranged in the center of the first side plate, and blades are uniformly arranged on the first side plate;
and the second side plate is fixedly connected with the blades on the integrally-formed main body.
Preferably, the first side plate is a circular plate, and the center of the first side plate is cylindrical and extends to one side to form the central shaft; the second side plate is also a circular plate.
Preferably, the second side plate is fixed to the blade on the integrally formed body by gluing.
Preferably, the integrally formed fan impeller main body is of a thermosetting resin structure, and the second side plate is a thermosetting resin side plate.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. based on the combination of the thermosetting resin raw material and a brand new reaction injection molding process, the large-scale non-metal fan impeller can be prepared, and the bottleneck that only small-scale fan impellers can be prepared from non-metal materials is broken through.
2. Because of adopting the thermosetting resin raw material, the fan impeller has the advantages of light weight, difficult deformation, stable quality, strong corrosion resistance, acid and alkali resistance and the like.
3. The fan impeller is prepared by a brand new reaction injection molding process, the fan impeller product is integrally molded, and the fan impeller has the advantages of high efficiency, high precision and the like, and the prepared fan impeller has low noise and good dynamic balance performance.
Drawings
Fig. 1 is a flow chart of a method for manufacturing a reaction injection molding fan wheel provided in a first embodiment of the present application;
FIG. 2 is a flow chart of a method of manufacturing a reaction injection molding fan wheel provided in example two of the present application;
fig. 3 is a perspective structural view of a fan impeller provided in the third embodiment of the present application;
fig. 4 is an integrated schematic view of a side plate, an impeller and a central shaft of a fan impeller provided in the third embodiment of the present application;
fig. 5 is a schematic view of another side plate of the fan wheel provided in the third embodiment of the present application.
Detailed Description
The embodiment of the application provides a method for preparing a fan impeller by reaction injection molding, and solves the problems of unstable quality, poor corrosion resistance, small specification, low efficiency, low precision, large noise and the like of the fan impeller prepared by casting welding, injection molding, manual pasting and other methods in the prior art.
In order to solve the problem of crosstalk, the technical scheme in the embodiment of the present application has the following general idea:
the fan impeller is prepared by adopting thermosetting resin as a raw material of the fan impeller, designing a double-sided die according to the shape and the specification of the fan impeller and based on a brand-new reaction injection molding process.
Thermosetting resin (thermosetting resin) refers to a resin which undergoes chemical change after being heated, gradually hardens and forms, is not softened after being heated, and cannot be dissolved. After the thermosetting resin is cured, a network structure is formed due to intermolecular crosslinking, so that the thermosetting resin has the advantages of high rigidity, high hardness, high temperature resistance, high heat distortion temperature, nonflammability, strong corrosion resistance, acid and alkali resistance, and good product size and performance stability.
The thermosetting resin includes: polyurethane PU, polydicyclopentadiene PDCPD, phenolic resin, urea resin, melamine-formaldehyde resin, epoxy resin, unsaturated resin, polyimide and the like.
According to different working condition requirements, the thermosetting resin can be directly adopted as the raw material of the fan impeller, and a reinforced composite material such as fiber can be added into the thermosetting resin, so that the strength of the manufactured fan impeller is further increased.
Reaction Injection Molding (RIM) is an industrial molding process. The raw material used in the method is not polymer, but two or more than two liquid monomers or prepolymers are respectively added into a mixing head according to a certain proportion, are uniformly mixed under pressure, are immediately injected into a closed die, and are polymerized and cured in the closed die to form the product. Because the raw material is liquid, the die cavity can be quickly filled with small pressure, so that the die clamping force and the die cost are reduced, and the method is particularly suitable for producing large-area workpieces.
Based on the raw materials and the method, the large-scale non-metal fan impeller (more than 10 kg) can be prepared, and the prepared fan impeller is not easy to deform, stable in quality, strong in corrosion resistance, acid-base resistant, high in efficiency, high in precision, small in noise and good in dynamic balance performance.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
Fig. 1 is a flowchart of a method for manufacturing a reaction injection molding fan impeller provided in an embodiment of the present application, where the method for manufacturing a reaction injection molding fan impeller includes the following steps:
step S1: and designing a double-sided mold of the fan impeller.
According to fan wheel's shape and specification, the fan wheel double-sided mould (upper and lower mould) that the design matches, promptly: when the upper die and the lower die of the fan impeller are closed, a cavity matched with the shape and the specification of the fan impeller is formed between the upper die and the lower die. And (3) placing a double-sided mold of the fan impeller in a press.
Step S2: the fan impeller is made of polyurethane, and the polyurethane is prepared into polyol and diisocyanateThe two-component cyanogen ester stock solution is respectively stored in two containers, the containers are pressure containers, the temperature in the containers is 25-38 ℃, the pressure in the containers is 0.15-0.28 MPa, and the containers are filled with N2The viscosity and the appropriate reactivity of the raw material in the container are maintained at 1.5 pas or less.
Step S3: and closing the upper die and the lower die of the fan impeller, and vacuumizing the cavities in the upper die and the lower die.
Step S4: the polyol and the diisocynate in the two reservoirs are respectively added into a mixing head according to the proportion of 1:1, the pressure in the mixing head is increased to 10-20 MPa, the two components are uniformly mixed, and the mixture is injected into a closed fan impeller mold. The mixture is rapidly polymerized in a fan impeller mould and is crosslinked, cured and molded.
Step S5: and opening the fan impeller mold and demolding.
Step S6: and (4) carrying out post-treatment on the fan impeller product after demoulding, including finishing, painting, heat treatment, packaging and the like. The heat treatment has two functions: the first is supplementary curing, and the second is baking after painting, so as to form a firm protective film or decorative film on the surface of the product. And further finishing and packaging to obtain a final fan impeller product.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. based on the combination of polyurethane raw materials and a brand-new reaction injection molding process, the large-scale non-metal fan impeller can be prepared, and the bottleneck that only small-scale fan impellers can be prepared from non-metal materials is broken through.
2. Because of adopting polyurethane raw materials, the fan impeller has the advantages of light weight, difficult deformation, stable quality, strong corrosion resistance, acid and alkali resistance and the like.
3. The fan impeller is prepared by a brand new reaction injection molding process, the fan impeller product is integrally molded, and the fan impeller has the advantages of high efficiency, high precision and the like, and the prepared fan impeller has low noise and good dynamic balance performance.
Example two
Fig. 2 is a flowchart of a method for manufacturing a reaction injection molding fan impeller provided in an embodiment of the present application, where the method for manufacturing a reaction injection molding fan impeller includes the following steps:
step S1: and designing a double-sided mold of the fan impeller.
According to fan wheel's shape and specification, the fan wheel double-sided mould (upper and lower mould) that the design matches, promptly: when the upper die and the lower die of the fan impeller are closed, a cavity matched with the shape and the specification of the fan impeller is formed between the upper die and the lower die. And (3) placing a double-sided mold of the fan impeller in a press.
Step S2: the raw material of the fan impeller adopts polydicyclopentadiene, and the polydicyclopentadiene is prepared into two components, wherein the first component is high-purity polydicyclopentadiene and an auxiliary agent, and the second component is a catalyst; the two groups of raw materials are respectively stored in two containers.
Step S3: and closing the upper die and the lower die of the fan impeller, and vacuumizing the cavities in the upper die and the lower die.
Step S4: the two components in the two reservoirs are respectively added into a mixing head according to the ratio of 30-50: 1, the pressure in the mixing head is increased to 10-30 MPa, the two components are uniformly mixed, and the mixture is injected into a closed fan impeller mold. The mixture is rapidly polymerized in a fan impeller mould and is crosslinked, cured and molded.
Step S5: opening a fan impeller mold, and demolding;
step S6: and (3) carrying out post-treatment on the fan impeller product after demoulding, wherein the post-treatment comprises water-based environment-friendly paint primer, finishing, water-based environment-friendly finish, heat treatment, inspection, packaging and the like, and the steps are shown in figure 3. The heat treatment has two functions: the first is supplementary curing, and the second is baking after painting, so as to form a firm protective film or decorative film on the surface of the product. And further finishing and packaging to obtain a final fan impeller product.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. based on the combination of polydicyclopentadiene raw material and a brand-new reaction injection molding process, the large-sized non-metal fan impeller can be prepared, and the bottleneck that only small-sized fan impellers can be prepared from non-metal materials is broken through.
2. Because of adopting polydicyclopentadiene as raw material, the fan impeller has the advantages of light weight, difficult deformation, stable quality, strong corrosion resistance, acid and alkali resistance and the like.
3. The fan impeller is prepared by a brand new reaction injection molding process, the fan impeller product is integrally molded, and the fan impeller has the advantages of high efficiency, high precision and the like, and the prepared fan impeller has low noise and good dynamic balance performance.
EXAMPLE III
Fig. 3 is a schematic structural diagram of the fan impeller provided in this embodiment, and the fan impeller includes a first side plate 1, blades 2, a central shaft 3, and a second side plate 4. Wherein, first curb plate 1, blade 2, center pin 3 are integrated into one piece structure, and this integrated into one piece structure and second curb plate 4 sticky fixed form final fan wheel.
Specifically, the first side plate 1 is a circular plate, the center of the circular plate is cylindrical and extends to one side to form a central shaft 3, the plurality of blades 2 are uniformly arranged on the circular plate, and the first side plate 1, the blades 2 and the central shaft 3 are integrally formed, as shown in fig. 4, the integrally formed structure is manufactured by the method of the first embodiment/the second embodiment. The fan impeller double-sided die designed in the first embodiment/the second embodiment is matched with the integrated forming structure.
As shown in fig. 5, the second side plate 4 is also a circular plate, and the second side plate 4 is fixed to the other side of each blade 2 in the integrally molded structure by glue.
The material of the second side plate 4 is the same as the material of the integrally molded structure.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. except one side plate, other parts of the fan impeller are integrally formed, so that the number of parts is reduced, the production efficiency is improved, and the production line investment is reduced;
2. the large-size fan impeller can be prepared, the diameter of the fan impeller can reach 70 meters, multi-component splicing is not needed, and the structure can be designed at will.
3. The fan impeller product is light in weight, not easy to deform, stable in quality, free of bubble pinholes, smooth in back, free of a release agent, strong in corrosion resistance and acid and alkali resistant.
It should be understood that the terms of orientation of up, down, left, right, front, back, top, bottom, etc., referred to or may be referred to in this specification, are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed accordingly depending on the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
While the foregoing is directed to the preferred embodiment of the present application, and not to the limiting thereof in any way and any way, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Those skilled in the art can make various changes, modifications and equivalent arrangements to those skilled in the art without departing from the spirit and scope of the present application; moreover, any equivalent alterations, modifications and variations of the above-described embodiments according to the spirit and techniques of this application are intended to be within the scope of the claims of this application.

Claims (10)

1. A preparation method of a reaction injection molding fan impeller is characterized by comprising the following steps:
designing a fan impeller double-sided die, and placing the fan impeller double-sided die in a press;
adopting thermosetting resin as a raw material of a fan impeller, and preparing the raw material of the fan impeller into A, B two components;
closing the fan impeller double-sided mold, and vacuumizing a cavity in the fan impeller double-sided mold;
mixing the A, B two components in proportion, pressurizing, and injecting the mixture into a cavity pump in a closed fan impeller double-sided mold; polymerizing the mixture in a double-sided mold of the fan impeller, and performing crosslinking, curing and molding;
opening the fan impeller double-sided mold, and demolding;
and (5) carrying out post-treatment on the fan impeller product after demoulding.
2. The method for manufacturing a fan wheel according to claim 1, wherein the fan wheel double-sided mold comprises an upper mold and a lower mold which can be opened and closed, and when the upper mold and the lower mold are closed, a cavity matched with the shape and the specification of the fan wheel to be manufactured is formed between the upper mold and the lower mold.
3. The method of claim 1, wherein the fan impeller is prepared from polyurethane, and the polyurethane is prepared into A, B two components, wherein the component A is polyol and the component B is diisocyanate.
4. The method for preparing a blower impeller by reaction injection molding according to claim 1, wherein polydicyclopentadiene is adopted as a raw material of the blower impeller, and the polydicyclopentadiene is prepared into A, B two components, wherein the component A is polydicyclopentadiene and an auxiliary agent, and the component B is a catalyst.
5. The method for preparing a fan impeller by reaction injection molding according to claim 1, wherein the A, B components are mixed in proportion, and the specific method for pressurizing is as follows: the A, B two components are respectively added into a mixing head according to the proportion, and the mixing head is pressurized to uniformly mix the A, B two components.
6. The method of manufacturing a fan wheel by reaction injection molding according to claim 1, wherein the step of post-treating the fan wheel product after the mold release comprises:
brushing a water-based environment-friendly paint primer on the fan impeller product;
trimming the edges of the fan wheel article;
brushing water-based environment-friendly finish paint on the fan impeller product;
heat treating the fan wheel article;
inspecting the heat-treated fan impeller product;
and packaging the fan impeller product.
7. A reaction injection molding fan wheel, comprising:
the fan impeller comprises an integrally formed fan impeller main body, wherein the integrally formed fan impeller main body comprises a first side plate, a central shaft is arranged in the center of the first side plate, and blades are uniformly arranged on the first side plate;
and the second side plate is fixedly connected with the blades on the integrally-formed main body.
8. The reaction injection molding fan wheel of claim 7 wherein the first side plate is a circular plate, the center of the first side plate extending cylindrically to one side to form the central axis; the second side plate is also a circular plate.
9. The reaction injection molded fan wheel of claim 7 wherein the second side plate is adhesively secured to the blades on the integrally molded body.
10. The reaction injection molded fan wheel of claim 7 wherein the integrally molded fan wheel body is a thermoset resin construction and the second side plate is a thermoset resin side plate.
CN202110179526.0A 2021-02-09 2021-02-09 Preparation method of reaction injection molding fan impeller and fan impeller Pending CN112983884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110179526.0A CN112983884A (en) 2021-02-09 2021-02-09 Preparation method of reaction injection molding fan impeller and fan impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110179526.0A CN112983884A (en) 2021-02-09 2021-02-09 Preparation method of reaction injection molding fan impeller and fan impeller

Publications (1)

Publication Number Publication Date
CN112983884A true CN112983884A (en) 2021-06-18

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Application Number Title Priority Date Filing Date
CN202110179526.0A Pending CN112983884A (en) 2021-02-09 2021-02-09 Preparation method of reaction injection molding fan impeller and fan impeller

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