CN114148500A - Shaft epoxy resin forging and shaft forging epoxy cladding method - Google Patents

Shaft epoxy resin forging and shaft forging epoxy cladding method Download PDF

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Publication number
CN114148500A
CN114148500A CN202111602833.1A CN202111602833A CN114148500A CN 114148500 A CN114148500 A CN 114148500A CN 202111602833 A CN202111602833 A CN 202111602833A CN 114148500 A CN114148500 A CN 114148500A
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layer
shaft
reinforced plastic
adhesive resin
glass fiber
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CN202111602833.1A
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Chinese (zh)
Inventor
陈聪
吕斌杰
张海峰
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BAODING HEAVY INDUSTRY CO LTD
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BAODING HEAVY INDUSTRY CO LTD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)

Abstract

The invention relates to a shaft epoxy resin forging and a shaft epoxy coating method, comprising a shaft forging, wherein the surface of the shaft forging is coated with a bottom layer adhesive resin layer, a bottom layer spiral glass fiber reinforced plastic reinforcing belt is arranged on the bottom layer adhesive resin layer, the surface of the bottom layer spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a second layer adhesive resin layer, the second layer spiral glass fiber reinforced plastic reinforcing belt is wound on the second layer adhesive resin layer, the surface of the second layer spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a third layer adhesive resin layer, the third layer spiral glass fiber reinforced plastic reinforcing belt is wound on the third layer adhesive resin layer, the surface of the third layer spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a fourth layer adhesive resin layer, the fourth layer spiral glass fiber reinforced plastic reinforcing belt is wound on the fourth layer adhesive resin layer, and the fifth layer adhesive resin layer (10) is coated on the fourth layer spiral glass fiber reinforced plastic reinforcing belt (9). The advantages are that: the coating layer manufactured by the method is uniform and compact, has no defects of bubbles, bulges and the like on the surface, can completely prevent the shaft from contacting with seawater or seawater steam, and achieves the purposes of corrosion prevention and rust prevention.

Description

Shaft epoxy resin forging and shaft forging epoxy cladding method
Technical Field
The invention relates to a shaft epoxy resin forging and a shaft forging epoxy coating method, wherein the coating layer is uniform and compact, the surface of the coating layer has no defects of bubbles, bulges and the like, and the shaft epoxy resin forging and the shaft forging epoxy coating method can completely prevent a shaft from contacting seawater or seawater steam and achieve the effects of corrosion resistance and rust resistance.
Background
During the operation of the ship, the cabin is inevitably corroded by seawater atmosphere for a long time, and the propeller shaft is made of steel metal and is easy to rust when meeting the seawater atmosphere, so that the shaft is continuously corroded, and the strength is reduced. The complete sealing of the shaft surface against air and seawater atmospheres is therefore of particular importance, even affecting the service life of the ship. The conventional epoxy resin mixture is not specially applied to the coating of the propeller shaft for the ship, generally does not have the function of long-time seawater corrosion resistance, and the control on the aspects of the dosage of the auxiliary agent and the like is not accurate enough, so that the actual application effect cannot be achieved.
Disclosure of Invention
The design purpose is as follows: the defects in the background technology are avoided, and the shaft epoxy forging and the shaft forging epoxy coating method are designed, wherein the coating layer is uniform and compact, the surface has no defects of bubbles, bulges and the like, the contact between the shaft and seawater or seawater steam can be completely isolated, and the long corrosion and rust prevention effects can be achieved.
The design scheme is as follows: the propeller shaft belongs to a shaft forging, the conventional weight is 5-50 tons, the length is 5-25 meters, and the diameter range of a coating part is 100-700mm, so that the coating process needs to be carried out on a machine tool and a specific roller frame, and the rotating speed is controlled to be 3-5 revolutions per minute during coating. In the structural design, the invention adopts the combination of the adhesive resin layer and the glass fiber reinforced plastic reinforcing band on the basis of the existing shafting forging, and forms an anticorrosive layer formed by the adhesive resin layer and the spiral glass fiber reinforced plastic reinforcing band winding layer on the shafting forging, the anticorrosive layer is uniform and compact, has no defects of bubbles, bulges and the like on the surface, and can completely prevent the shaft from contacting with seawater or seawater steam, thereby playing the roles of long-term corrosion prevention and rust prevention. In the coating method, the coating material comprises glass ribbon and adhesive composed of resin, hardener, plasticizer and thinner. After the components are proportioned according to a certain proportion, the surface of a shafting forging is uniformly coated with the coating material adhesive resin and the glass fiber reinforced plastic reinforcing band, and the meshes of the glass fiber band should ensure that the band can be soaked by the adhesive resin, so that the main purpose is to prevent seawater corrosion and prevent the reduction of anti-fatigue capability and even accidents caused by breakage due to shaft rusting.
The epoxy resin mixing and proportioning method is applied to the coating of the propeller shaft, the propeller shaft belongs to a shaft forging piece, the conventional weight is 5-50 tons, the length is 5-25 meters, and the diameter range of a coating part is 100 plus materials and 700mm, so the coating of the propeller shaft can be only carried out on a machine tool or a rolling frame, and the coating needs to be matched with the rotating speed of the propeller shaft, and the epoxy resin proportioning method is based on the rotating speed of the propeller shaft of 3-5 revolutions per minute. The mixing proportion of the epoxy resin has close relation with the temperature.
The epoxy resin mixture consisted of the following organics:
Figure 306088DEST_PATH_IMAGE002
the relationship between the mixture ratio of the epoxy resin and the ambient temperature is that the mixture ratio of the epoxy resin is carried out at the temperature of 0-30 ℃:
Figure 551124DEST_PATH_IMAGE004
according to the epoxy resin mixing and proportioning method, the condition of uneven thickness caused by unstable flowability in the coating process can be solved according to accurate proportioning at different temperatures, particularly accurate addition of two hardeners, and the proportioned epoxy resin mixture can realize axial continuous coating without interruption, so that the problem that the overall corrosion resistance effect is influenced by air holes, seams and the like in the coating process is avoided.
The technical scheme 1: a shaft epoxy resin forging comprises a shaft forging, wherein a bottom adhesive resin layer is coated on the surface of the shaft forging, a bottom spiral glass fiber reinforced plastic reinforcing belt is arranged on the bottom adhesive resin layer, the surface of the bottom spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a second adhesive resin layer, the second spiral glass fiber reinforced plastic reinforcing belt is wound on the second adhesive resin layer, the surface of the second spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a third adhesive resin layer, the third spiral glass fiber reinforced plastic reinforcing belt is wound on the third adhesive resin layer, the surface of the third spiral glass fiber reinforced plastic reinforcing belt is soaked with adhesive resin to form a fourth adhesive resin layer, the fourth spiral glass fiber reinforced plastic reinforcing belt is wound on the fourth adhesive resin layer, and the fifth adhesive resin layer is coated on the fourth spiral glass fiber reinforced plastic reinforcing belt.
The technical scheme 2 is as follows: an epoxy coating method for a shaft forging comprises the steps of forming the shaft forging and a coating material, wherein the coating material is composed of a glass ribbon and an adhesive; firstly, manufacturing an adhesive: 1. ensuring the cleanness of a container and a stirrer, and uniformly stirring 8-10 parts by weight of plasticizer and 0-15 parts by weight of diluent with 100 parts by weight of epoxy resin by using an electric or pneumatic stirrer; 2. pouring 15-30 parts by weight of 593 curing agent and 8-10 parts by weight of triethylene tetramine into a container, immediately stirring uniformly, wherein the rotating speed of a stirrer should not exceed 175 rpm; 3. stirring must be sufficient and thorough to ensure that the resin and the hardening agent on the wall of the container are completely mixed; if the mixture is milk-like, indicating that the mixing speed is too high, the resin and hardener should be mixed within a short time (within 5 minutes) before coating; secondly, selecting a glass ribbon: a thin shaft of less than 150mm, using a tape of 60-80 mm width; the shaft more than or equal to 150 is a belt with the width of 100-; thirdly, coating process: 1. adjusting the level, wherein the epoxy coating section needs to be kept in a horizontal state; 2. surface cleaning: removing rust by sand blasting or sand paper, pouring enough solvent on the shaft for cleaning twice without wiping with any cloth, paper or the like, and inspecting the surface of the shaft to ensure that no oil, rust or water stain exists; 3. pouring resin: uniformly pouring the epoxy resin mixture on the surface of a propeller shaft, adopting a portable plastic scraper to approximately uniformly push and disperse the mixture along with the rotation of the shaft, and then completely and uniformly scraping the resin by using a plastic scraper which is fixed with a level and has a width of about 300 mm; the covering thickness is about 1 mm; 4. adopting a glass ribbon with the width of 100-150mm, firstly winding the propeller shaft for one circle at the initial stage, pressing the ribbon head, and continuously wrapping the glass ribbon in a spiral shape after one circle to ensure that 3/4 overlapping amount exists between layers; continuing spiral wrapping until the other end of the shaft is close, gradually reducing the spiral angle until the last complete wrapping is completed, cutting the belt, and stopping the shaft; 5. continuously pouring the epoxy resin mixture, wherein the method is consistent with the coating of the first mixture; continuing to coat the glass fiber ribbons until the fourth layer of glass fiber ribbons is completely coated, wherein the glass fiber ribbons are consistent with the first glass fiber ribbons in coating; 6. after the fourth layer of glass ribbon is coated, continuously pouring the resin mixture to be used as a fifth layer of resin coating; 7. the whole coating process needs to coat five layers of resin mixture and four layers of glass ribbons; 8. after the coating is finished, the coating thickness needs to be more than 4mm, the propeller shaft continues to rotate for more than 24 hours, and in addition, the resin mixture is completely cured.
Compared with the prior art, the invention has the advantages that firstly, the thickness of the coating layer is uniform, the propeller shaft rotates at high speed in the actual use process, and the uniformity of the coating layer can effectively prevent the shaft from being eccentric under the action of centrifugal force; secondly, the bonding strength of the epoxy resin mixture covering layer is stable, and the epoxy resin mixture covering layer cannot fall off after long-time movement, so that the service life is prolonged; thirdly, the structure of the epoxy resin mixture coating layer is compact, the corrosion of air or seawater atmosphere is effectively blocked, and the corrosion resistance is excellent; fourthly, the glass fiber ribbons are wrapped layer by layer in the epoxy resin mixture covering layer, the stability is excellent, and the glass fiber ribbons cannot fall off after the resin is hardened.
Drawings
FIG. 1 is a schematic cross-sectional view of a shaft epoxy forging.
Detailed Description
Example 1: reference is made to figure 1. A shaft epoxy resin forging comprises a shaft forging 1, wherein a bottom layer adhesive resin layer 2 is coated on the surface of the shaft forging 1, a bottom layer spiral glass fiber reinforced plastic reinforcing belt 3 is arranged on the bottom layer adhesive resin layer 2, a second layer adhesive resin layer 4 is formed by impregnating adhesive resin on the surface of the bottom layer spiral glass fiber reinforced plastic reinforcing belt 3, a second layer spiral glass fiber reinforced plastic reinforcing belt 5 is wound on the second layer adhesive resin layer 4, a third layer adhesive resin layer 6 is formed by impregnating adhesive resin on the surface of the second layer spiral glass fiber reinforced plastic reinforcing belt 5, a third layer spiral glass fiber reinforced plastic reinforcing belt 7 is wound on the third layer adhesive resin layer 6, a fourth layer adhesive resin layer 8 is formed by impregnating adhesive resin on the surface of the third layer spiral glass fiber reinforced plastic reinforcing belt 7, a fourth layer spiral glass fiber reinforced plastic reinforcing belt 9 is wound on the fourth layer adhesive resin layer 8, and a fourth layer adhesive resin layer (10) is coated on the fourth layer spiral glass fiber reinforced plastic reinforcing belt (9).
The second layer of spiral glass reinforced plastic reinforcing strips 5 are opposite to the spiral direction of the bottom layer of spiral glass reinforced plastic reinforcing strips 3. The third layer of spiral glass reinforced plastic reinforcing belt 7 has the spiral direction opposite to the spiral direction of the second layer of spiral glass reinforced plastic reinforcing belt 5. The fourth layer of spiral glass reinforced plastic reinforcing belts 9 has the opposite spiral direction to the third layer of spiral glass reinforced plastic reinforcing belts 7.
Example 2: an epoxy coating method for a shaft forging comprises the shaft forging and a coating material, wherein the coating material is composed of a glass ribbon and an adhesive.
The formula of the main material and the adhesive comprises: the main material comprises glass ribbon, adhesive made of resin, hardener, plasticizer and thinner. The formula of the main material and the adhesive is as follows:
Figure DEST_PATH_IMAGE006
remarking: the grid of the glass ribbon should ensure that the tape can be saturated.
2. Mixing of the adhesive:
2.1, ensuring the cleanness of the container and the stirrer, weighing the plasticizer and the diluent in proportion, and uniformly stirring the mixture with the epoxy resin by using an electric or pneumatic stirrer.
2.2 weighing the hardening agent according to the proportion, pouring the hardening agent into a container, and immediately stirring the hardening agent uniformly, wherein the rotating speed of a stirrer should not exceed 175 rpm.
2.3 stirring must be sufficient and thorough to ensure complete mixing of the resin and hardener on the vessel wall. If the mixture is milk-like, indicating that the mixing speed is too high, the resin and hardener should be mixed in a short time before coating.
Secondly, a coating process:
1. the environmental requirements are as follows: the relative humidity of the air should not be higher than 80%. If the humidity is above 80%, the shaft needs to be preheated by a lamp to 40-50 deg.C (usually by infrared or 500W lamp). .
2. Preparing: the axle is fixed on a lathe or a powered roller, and the bed or the ground is covered by a polyethylene film or thick paper to prevent dripping and overflowing.
3. Surface cleaning: blasting or sanding to remove rust, pouring a sufficient amount of solvent onto the shaft (acetone, gasoline, banana oil or carbon tetrachloride) to clean it twice, without wiping it dry with any cloth, paper or the like, inspecting the shaft surface to ensure that there is no oil, rust or water stain, typically no acid wash.
4. Coating (pouring and wrapping):
4.1 pouring resin: the mixed resin was poured evenly onto a rotating shaft and spread evenly over the entire surface of the shaft with a gloved hand or with a roller (with disposable plastic gloves, clean reusable rubber gloves or a roller brush without any fluff). The shaft surface cannot have any dry (not coated) places and ensures that there are no hanging drops of resin on the shaft.
4.2 wrapping the glass fiber reinforced plastic reinforcing belt:
(1) when the belt is wrapped, firstly, the belt is wound for a whole circle, the belt head is pressed, after one circle, the belt is wrapped continuously in a spiral shape, and the overlapping amount of 3/4 between layers is ensured;
(2) continuing spiral wrapping until the other end of the shaft is close, gradually reducing the spiral angle until the last complete wrapping is completed, cutting the belt, and stopping the shaft;
(3) completely soaking the belt with resin, coating with resin, soaking the belt with resin in the same way as the first layer, and repeating the above steps until the fourth layer of belt is completely coated;
(4) when the fourth layer of the belt is completely soaked, coating the fourth layer of the belt with a large amount of resin, and keeping the shaft to slowly rotate until the resin is cured, wherein the resin coating can generate ridge protrusion if the speed is too high in the stage;
(5) the remaining short segments are not used, which increases the number of joints. If the tape is used up in the midway, a new tape needs to be completely pressed for a circle on the broken end of the previous tape, then the spiral wrapping is continued, the wrinkles need to be smoothed as much as possible, large wrinkles need to be cut off and flattened by scissors, and if the wrinkles are too large, the folded triangular parts need to be trimmed.
(6) For a tapered portion of the shaft: the conical part is wrapped from the big direction to the small direction, the middle part is not interrupted when the conical part is wrapped, and a whole circle is firstly wound on the cylindrical part close to the conical degree before the conical part is wrapped.
(7) Care was taken not to create wrinkles while avoiding unnecessary overlapping wraps.
4.3 curing time: standing at 25 deg.C or below for 24 hr or more.
Thirdly, product quality inspection:
1. and (3) appearance inspection: firstly, the package is checked after finishing, and the following requirements are met: the color is uniform, the surface is smooth, no sagging exists, no impurities exist, no cracks exist, no whitening area exists, no bulge exists, no air bubbles exist, no glass ribbon protrudes out of the outermost layer of resin, and no other defects exist; secondly, the holes and/or pits on the coating can be repaired according to the following method: grinding the holes/pits and the periphery thereof to be deep, and filling the holes/pits with resin; polishing with sand paper; coating a layer on the repaired position by using the mixed resin and the hardening agent; if the repair site is large, it is necessary to repair it with resin and glass ribbon.
It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.

Claims (10)

1. The utility model provides an axle epoxy forging, includes axle forging (1), characterized by: the surface of a shaft forging (1) is coated with a bottom layer adhesive resin layer (2), a bottom layer spiral glass fiber reinforced plastic reinforcing belt (3) is arranged on the bottom layer adhesive resin layer (2), the surface of the bottom layer spiral glass fiber reinforced plastic reinforcing belt (3) is soaked with adhesive resin to form a second layer adhesive resin layer (4), a second layer spiral glass fiber reinforced plastic reinforcing belt (5) is wound on the second layer adhesive resin layer (4), the surface of the second layer spiral glass fiber reinforced plastic reinforcing belt (5) is soaked with adhesive resin to form a third layer adhesive resin layer (6), the third layer spiral glass fiber reinforced plastic reinforcing belt (7) is wound on the third layer adhesive resin layer (6), the surface of the third layer spiral glass fiber reinforced plastic reinforcing belt (7) is soaked with adhesive resin to form a fourth layer adhesive resin layer (8), the fourth layer spiral glass fiber reinforced plastic reinforcing belt (9) is wound on the fourth layer adhesive resin layer (8), and the fifth layer adhesive resin layer (10) is coated on the fourth layer spiral glass fiber reinforced plastic reinforcing belt (9).
2. A shaft epoxy forging as claimed in claim 1, wherein: the second layer of spiral glass reinforced plastic reinforcing strips 5 are opposite to the spiral direction of the bottom layer of spiral glass reinforced plastic reinforcing strips 3.
3. A shaft epoxy forging as claimed in claim 1, wherein: the third layer of spiral glass reinforced plastic reinforcing belt 7 has the spiral direction opposite to the spiral direction of the second layer of spiral glass reinforced plastic reinforcing belt 5.
4. A shaft epoxy forging as claimed in claim 1, wherein: the fourth layer of spiral glass reinforced plastic reinforcing belts 9 has the opposite spiral direction to the third layer of spiral glass reinforced plastic reinforcing belts 7.
5. An epoxy cladding method for a shaft forging comprises the steps of: the wrapping material consists of a glass ribbon and an adhesive;
firstly, manufacturing an adhesive:
1. ensuring the cleanness of a container and a stirrer, uniformly stirring 8-10 parts by weight of plasticizer and less than 15 parts by weight of diluent with 100 parts by weight of epoxy resin by using an electric or pneumatic stirrer;
2. pouring 15-30 parts by weight of 593 curing agent and 8-10 parts by weight of triethylene tetramine into a container, immediately stirring uniformly, wherein the rotating speed of a stirrer should not exceed 175 rpm;
3. stirring must be sufficient and thorough to ensure that the resin and the hardening agent on the wall of the container are completely mixed; if the mixture is milk-like, indicating that the mixing speed is too fast, the resin and hardener should be mixed within 5 minutes before coating;
secondly, selecting a glass ribbon:
a thin shaft of less than 150mm, using a tape of 60-80 mm width; the shaft more than or equal to 150 is a belt with the width of 100-;
thirdly, coating process:
1. adjusting the level, wherein the epoxy coating section needs to be kept in a horizontal state;
2. surface cleaning: removing rust by sand blasting or sand paper, pouring enough solvent on the shaft for cleaning twice without wiping with any cloth, paper or the like, and inspecting the surface of the shaft to ensure that no oil, rust or water stain exists;
3. pouring resin: uniformly pouring the epoxy resin mixture on the surface of a propeller shaft, adopting a portable plastic scraper to approximately uniformly push and disperse the mixture along with the rotation of the shaft, and then completely and uniformly scraping the resin by using a plastic scraper which is fixed with a level and has a width of about 300 mm; the covering thickness is about 1 mm;
4. adopting a glass ribbon with the width of 100-150mm, firstly winding the propeller shaft for one circle at the initial stage, pressing the ribbon head, and continuously wrapping the glass ribbon in a spiral shape after one circle to ensure that 3/4 overlapping amount exists between layers; continuing spiral wrapping until the other end of the shaft is close, gradually reducing the spiral angle until the last complete wrapping is completed, cutting the belt, and stopping the shaft;
5. continuously pouring the epoxy resin mixture, wherein the method is consistent with the coating of the first mixture; continuing to coat the glass fiber ribbons until the fourth layer of glass fiber ribbons is completely coated, wherein the glass fiber ribbons are consistent with the first glass fiber ribbons in coating;
6. after the fourth layer of glass ribbon is coated, continuously pouring the resin mixture to be used as a fifth layer of resin coating;
7. the whole coating process needs to coat five layers of resin mixture and four layers of glass ribbons;
8. after the coating is finished, the coating thickness needs to be more than 4mm, the propeller shaft continues to rotate for more than 24 hours, and the resin mixture is completely cured.
6. The method for epoxy-cladding the shaft forging according to claim 5, wherein: if the humidity is above 80%, the shaft is preheated to 40-50 ℃ using infrared or 500W lamp heating.
7. The method for epoxy-cladding the shaft forging according to claim 5, wherein: the solvent is acetone, gasoline, banana oil or carbon tetrachloride.
8. The method for epoxy-cladding the shaft forging according to claim 5, wherein: the gloves are disposable plastic gloves or rubber gloves.
9. The method for epoxy-cladding the shaft forging according to claim 5, wherein: the roll brush means a roll brush having no soft hairs.
10. The method for epoxy-cladding the shaft forging according to claim 5, wherein: the relative humidity of the air during coating should not be higher than 80%.
CN202111602833.1A 2021-12-24 2021-12-24 Shaft epoxy resin forging and shaft forging epoxy cladding method Pending CN114148500A (en)

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