CN108582599B - Process for manufacturing pitted surface of toilet intermediate and interior glass fiber reinforced plastic of motor train unit - Google Patents
Process for manufacturing pitted surface of toilet intermediate and interior glass fiber reinforced plastic of motor train unit Download PDFInfo
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- CN108582599B CN108582599B CN201810355801.8A CN201810355801A CN108582599B CN 108582599 B CN108582599 B CN 108582599B CN 201810355801 A CN201810355801 A CN 201810355801A CN 108582599 B CN108582599 B CN 108582599B
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- mold
- layer
- wood
- gel coat
- pitted
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Classifications
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
Abstract
The invention relates to a manufacturing process of pitted surfaces on toilet intermediates of a motor train unit and surfaces of interior glass fiber reinforced plastics, which can improve the adhesive force of the pitted surfaces and eliminate the hidden trouble of pitted surface falling; meanwhile, the effects of the rough surface can be diversified, and the pattern of the rough surface can be adjusted according to the requirements of customers; the method comprises the following steps: (1) manufacturing a wood mold; (2) processing the wood model; (3) manufacturing a base die; (4) and (5) copying a product mold.
Description
Technical Field
The invention relates to a manufacturing process of a motor train unit toilet intermediate and a rough surface on the surface of interior glass fiber reinforced plastic.
Background
As is well known, most of the interior wall panels of the motor train unit toilet room and the compartment are made of glass fiber reinforced plastic, which is increasingly applied to the interior part of the motor train unit due to its advantages of light weight, high strength, good anti-skid property, etc. In order to improve the aesthetic degree and reduce the maintenance workload at ordinary times, the surface process of the interior decoration has more pitted surface effects, the existing pitted surface manufacturing process basically takes paint spraying as the main process, and the two problems of the prior pitted surface are investigated and researched:
1. the paint directly passes through the pitted surface generated by paint spraying, and the paint falls off in the long-term operation process, mainly because the paint and the glass fiber reinforced plastic surface are different in material, the adhesive force between the paint and the glass fiber reinforced plastic surface is insufficient, and the adhesive force is gradually reduced in the long-term operation process until the paint falls off;
2. due to the limitations of the chemical properties of the paint and the paint spraying process, the sprayed pitted surface has a single effect, is simple in style and almost uniform, and cannot be customized according to the needs of customers.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method which can improve the adhesive force of the hemp surface and eliminate the hidden trouble of the dropping of the hemp surface; meanwhile, the pitted surface effect can be diversified, and the pitted surface pattern of the motor train unit toilet intermediate and the inner decoration glass fiber reinforced plastic surface manufacturing process can be adjusted according to the customer requirements.
The invention relates to a process for manufacturing pitted surfaces on surfaces of a toilet intermediate body and interior glass fiber reinforced plastics of a motor train unit, which comprises the following steps:
(1) manufacturing a wood mold: determining the required pattern of the pitted surface according to the requirements of customers, and manufacturing a wood model with a corresponding pitted surface effect through carving or other processing forms;
(2) treating the wood model: carrying out surface treatment on the manufactured wood pattern;
(3) manufacturing a base die: copying a base mold with the shape completely symmetrical to that of the wood mold, selecting a gel coat with proper color and glossiness according to the requirements of customers, spraying the gel coat on the surface of the base mold through a special spraying process to manufacture a gel coat surface with a pitted surface effect, and standing the base mold at room temperature for 10 hours to completely cure the gel coat;
(4) copying a product mold: and (5) turning over the final product mould with the pitted surface effect directly.
The invention discloses a manufacturing process of pitted surfaces on surfaces of a motor train unit toilet intermediate and interior glass fiber reinforced plastic, wherein the surface treatment method in the step (2) comprises the following steps:
a. cleaning the surface of the manufactured wood pattern, and uniformly spraying a layer of polyester surface primer with the thickness of 10-20 microns on the surface of the wood pattern;
b. filling and leveling the local part which is not leveled by putty, and polishing the whole surface by using sand discs of 80#, 120#, 180#, 240#, 320# and 500# in sequence to make the surface smooth and level;
c. cleaning the surface of the wood pattern and repeating the previous step;
d. spraying a layer of polyester highlight gel coat with the thickness of 50-100 mu m on the surface of the polyester surface primer;
e. filling and leveling the part which is not leveled by putty, and sequentially polishing the whole surface by using sand discs of No. 240, No. 320, No. 500 and No. 800 to make the surface smooth and level;
f. adding 50mm wide turned edges around the wood pattern, and cleaning dust on the surface of the wood pattern by using an air pipe;
g. and (3) sequentially spraying a release agent for 2 times on the surface of the wood pattern to finish the treatment of the wood pattern.
The invention discloses a manufacturing process of pitted surfaces on surfaces of a toilet intermediate body and interior glass fiber reinforced plastic of a motor train unit, wherein the mould for copying a product in the step (4) comprises the following steps:
a. spraying the gel coat on the surface of the mould according to the mould gel coat spraying operation instruction;
b. after the gel coat is cured, controlling the environmental temperature to be 15-35 ℃, pasting 1 layer of surface felt on the surface of the gel coat by adopting mold resin, and curing for 24 hours;
c. removing air bubbles on the surface by using a wallpaper knife or an edge cutting knife, and filling concave angles with R4 at the corners of the die;
d. pasting 1 layer of chopped strand mat by using mold resin, and curing for 24 hours;
e. pasting 2 layers of chopped strand mats by using mold resin, and curing for 4 hours;
f. pasting 2 layers of chopped strand mats by using mold resin, and curing for 12 hours;
g. sequentially pasting 1 layer of chopped strand mat, 1 layer of strong core mat, 1 layer of cork and 1 layer of chopped strand mat by adopting resin added with 15% of calcium carbonate, and curing for 4 hours;
h. installing reinforcing ribs on the back of the mold, and adhering and fixing the reinforcing ribs on the back of the mold by using resin putty;
i. pasting 1 layer of chopped strand mat on the surface of the reinforcing rib by adopting resin added with 15% of calcium carbonate, standing for 12 hours, then demoulding, cutting, polishing the edge to be smooth and flat, and finishing mould reproduction.
Compared with the prior art, the invention has the beneficial effects that: the surface of the die can be processed by the method, so that the pitted surface and the surface of the glass fiber reinforced plastic are integrally formed in the pasting process of the glass fiber reinforced plastic, the adhesive force of the pitted surface can be improved, and the hidden trouble of the falling of the pitted surface is eliminated; meanwhile, different dough twist styles and shapes can be customized according to the requirements of customers, so that the dough twist effect is diversified.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention relates to a process for manufacturing pitted surfaces on surfaces of a toilet intermediate body and interior glass fiber reinforced plastics of a motor train unit, which comprises the following steps:
(1) manufacturing a wood mold: determining the required pattern of the pitted surface according to the requirements of customers, and manufacturing a wood model with a corresponding pitted surface effect through carving or other processing forms;
(2) treating the wood model: carrying out surface treatment on the manufactured wood pattern;
(3) manufacturing a base die: copying a base mold with the shape completely symmetrical to that of the wood mold, selecting a gel coat with proper color and glossiness according to the requirements of customers, spraying the gel coat on the surface of the base mold through a special spraying process to manufacture a gel coat surface with a pitted surface effect, and standing the base mold at room temperature for 10 hours to completely cure the gel coat;
(4) copying a product mold: and (5) turning over the final product mould with the pitted surface effect directly.
The invention discloses a manufacturing process of pitted surfaces on surfaces of a motor train unit toilet intermediate and interior glass fiber reinforced plastic, wherein the surface treatment method in the step (2) comprises the following steps:
a. cleaning the surface of the manufactured wood pattern, and uniformly spraying a layer of polyester surface primer with the thickness of 10-20 microns on the surface of the wood pattern;
b. filling and leveling the local part which is not leveled by putty, and polishing the whole surface by using sand discs of 80#, 120#, 180#, 240#, 320# and 500# in sequence to make the surface smooth and level;
c. cleaning the surface of the wood pattern and repeating the previous step;
d. spraying a layer of polyester highlight gel coat with the thickness of 50-100 mu m on the surface of the polyester surface primer;
e. filling and leveling the part which is not leveled by putty, and sequentially polishing the whole surface by using sand discs of No. 240, No. 320, No. 500 and No. 800 to make the surface smooth and level;
f. adding 50mm wide turned edges around the wood pattern, and cleaning dust on the surface of the wood pattern by using an air pipe;
g. and (3) sequentially spraying a release agent for 2 times on the surface of the wood pattern to finish the treatment of the wood pattern.
The invention discloses a manufacturing process of pitted surfaces on surfaces of a toilet intermediate body and interior glass fiber reinforced plastic of a motor train unit, wherein a mould for copying products in the step (4) comprises the following steps:
a. spraying the gel coat on the surface of the mould according to the mould gel coat spraying operation instruction;
b. after the gel coat is cured, controlling the environmental temperature to be 15-35 ℃, pasting 1 layer of surface felt on the surface of the gel coat by adopting mold resin, and curing for 24 hours;
c. removing air bubbles on the surface by using a wallpaper knife or an edge cutting knife, and filling concave angles with R4 at the corners of the die;
d. pasting 1 layer of chopped strand mat by using mold resin, and curing for 24 hours;
e. pasting 2 layers of chopped strand mats by using mold resin, and curing for 4 hours;
f. pasting 2 layers of chopped strand mats by using mold resin, and curing for 12 hours;
g. sequentially pasting 1 layer of chopped strand mat, 1 layer of strong core mat, 1 layer of cork and 1 layer of chopped strand mat by adopting resin added with 15% of calcium carbonate, and curing for 4 hours;
h. installing reinforcing ribs on the back of the mold, and adhering and fixing the reinforcing ribs on the back of the mold by using resin putty;
i. pasting 1 layer of chopped strand mat on the surface of the reinforcing rib by adopting resin added with 15% of calcium carbonate, standing for 12 hours, then demoulding, cutting, polishing the edge to be smooth and flat, and finishing mould reproduction.
According to the manufacturing process of the pitted surface of the toilet intermediate body and the interior glass fiber reinforced plastic of the motor train unit, the pitted surface and the surface of the glass fiber reinforced plastic are integrally formed in the pasting process of the glass fiber reinforced plastic through processing the surface of the mold, so that the adhesive force of the pitted surface can be improved, and the hidden trouble of the pitted surface falling off is eliminated; meanwhile, the moulds with different pitted surface styles and shapes can be customized according to the requirements of customers, so that products with various pitted surface effects can be manufactured according to different requirements in the glass fiber reinforced plastic pasting process.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A process for manufacturing pitted surfaces on the surfaces of glass fiber reinforced plastics used for interior decoration of a motor train unit toilet body is characterized by comprising the following steps:
(1) manufacturing a wood mold: determining the required pattern of the pitted surface according to the requirements of customers, and manufacturing a wood model with a corresponding pitted surface effect through carving or other processing forms;
(2) treating the wood model: and carrying out surface treatment on the manufactured wood model, wherein the surface treatment method comprises the following steps:
a. cleaning the surface of the manufactured wood pattern, and uniformly spraying a layer of polyester surface primer with the thickness of 10-20 microns on the surface of the wood pattern;
b. filling and leveling the local part which is not leveled by putty, and polishing the whole surface by using sand discs of 80#, 120#, 180#, 240#, 320# and 500# in sequence to make the surface smooth and level;
c. cleaning the surface of the wood pattern and repeating the previous step;
d. spraying a layer of polyester highlight gel coat with the thickness of 50-100 mu m on the surface of the polyester surface primer;
e. filling and leveling the part which is not leveled by putty, and sequentially polishing the whole surface by using sand discs of No. 240, No. 320, No. 500 and No. 800 to make the surface smooth and level;
f. adding 50mm wide turned edges around the wood pattern, and cleaning dust on the surface of the wood pattern by using an air pipe;
g. and (3) sequentially spraying a release agent for 2 times on the surface of the wood pattern to finish the treatment of the wood pattern.
(3) Manufacturing a base die: copying a base mold with the shape completely symmetrical to that of the wood mold, selecting a gel coat with proper color and glossiness according to the requirements of customers, spraying the gel coat on the surface of the base mold through a spraying process to manufacture a gel coat surface with a pitted surface effect, and standing the base mold at room temperature for 10 hours to completely cure the gel coat;
(4) copying a product mold: and (3) turning a final product mould directly with the pitted surface effect, wherein the turning of the product mould comprises the following steps:
a. spraying the gel coat on the surface of the mould according to the mould gel coat spraying operation instruction;
b. after the gel coat is cured, controlling the environmental temperature to be 15-35 ℃, pasting 1 layer of surface felt on the surface of the gel coat by adopting mold resin, and curing for 24 hours;
c. removing air bubbles on the surface by using a wallpaper knife or an edge cutting knife, and filling concave angles with R4 at the corners of the die;
d. pasting 1 layer of chopped strand mat by using mold resin, and curing for 24 hours;
e. pasting 2 layers of chopped strand mats by using mold resin, and curing for 4 hours;
f. pasting 2 layers of chopped strand mats by using mold resin, and curing for 12 hours;
g. sequentially pasting 1 layer of chopped strand mat, 1 layer of strong core mat, 1 layer of cork and 1 layer of chopped strand mat by adopting resin added with 15% of calcium carbonate, and curing for 4 hours;
h. installing reinforcing ribs on the back of the mold, and adhering and fixing the reinforcing ribs on the back of the mold by using resin putty;
i. pasting 1 layer of chopped strand mat on the surface of the reinforcing rib by adopting resin added with 15% of calcium carbonate, standing for 12 hours, then demoulding, cutting, polishing the edge to be smooth and flat, and finishing mould reproduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810355801.8A CN108582599B (en) | 2018-04-19 | 2018-04-19 | Process for manufacturing pitted surface of toilet intermediate and interior glass fiber reinforced plastic of motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810355801.8A CN108582599B (en) | 2018-04-19 | 2018-04-19 | Process for manufacturing pitted surface of toilet intermediate and interior glass fiber reinforced plastic of motor train unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108582599A CN108582599A (en) | 2018-09-28 |
| CN108582599B true CN108582599B (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810355801.8A Active CN108582599B (en) | 2018-04-19 | 2018-04-19 | Process for manufacturing pitted surface of toilet intermediate and interior glass fiber reinforced plastic of motor train unit |
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| CN (1) | CN108582599B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837346A (en) * | 2012-08-31 | 2012-12-26 | 滁州市永通交通设备有限公司 | Production technology for glass reinforced plastic hand washer and face washing cabinet |
| CN106335146A (en) * | 2016-08-27 | 2017-01-18 | 上海永知春节能科技有限公司 | Production process of PU line mold covering film |
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2018
- 2018-04-19 CN CN201810355801.8A patent/CN108582599B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837346A (en) * | 2012-08-31 | 2012-12-26 | 滁州市永通交通设备有限公司 | Production technology for glass reinforced plastic hand washer and face washing cabinet |
| CN106335146A (en) * | 2016-08-27 | 2017-01-18 | 上海永知春节能科技有限公司 | Production process of PU line mold covering film |
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| Publication number | Publication date |
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| CN108582599A (en) | 2018-09-28 |
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