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Special-shaped parts are difficult to process and more test the technology of manufacturers

               
Update:2021-06-17 0:00:00 Thursday
Summary:In addition to the commonly used plate and pipe, most of the carbon fiber products are custom-made. Even the plate and pipe have different requirements such as length, width, thickness and performance.Therefore, if a carbon fiber company wants to gai......
In addition to the commonly used plate and pipe, most of the carbon fiber products are custom-made. Even the plate and pipe have different requirements such as length, width, thickness and performance.
Therefore, if a carbon fiber company wants to gain a foothold in the carbon fiber industry, it must master the quantity of custom processing capacity.
The processing difficulty of carbon fiber shaped parts is higher than that of conventional parts
 
Like plate and pipe these, had belonged to the appearance is more neat, the product with very small processing difficulty.
In many special-shaped carbon fiber parts, many bending pipe, variable diameter pipe, can be connected to the flange of the special-shaped pipe, reinforced pipe, irregular shape plate, many holes in the plate, inside and outside the test can be connected to other materials plate, etc., the situation is too much.
 
Naturally, companies choose carbon fiber products to improve the overall performance of equipment or equipment to adapt to harsh use scenarios.
But unlike metals, carbon fiber materials can be easily processed into irregular shapes by melting and recasting at high temperatures.
Carbon fiber profiles require custom moulds and a lot of manual work to prepare them until they are cured.
This is destined to be more difficult to process carbon fiber shaped parts, the processing cycle is longer, for carbon fiber manufacturers, the challenge will be more difficult.
 
The basic process of custom processing of carbon fiber shaped parts is introduced
 
1. Issue drawings: Before the production of carbon fiber shaped parts, data calculation and model design are required. Usually, three-dimensional software is used to build the appearance.
 
2, casting mold: different from the carbon fiber circular tube mold, carbon fiber shaped parts need more than one kind of mold, for the hollow carbon fiber shaped parts, it needs two kinds of outer mold and core mold, the hollow part may also need other materials to fill, such as honeycomb plate.
The casting mold is the most important step in the process of finishing the carbon fiber shaped parts. If the mold goes wrong, all the subsequent work is in vain.
 
3, mold pretreatment: after the completion of mold production, before the formal start of manufacturing carbon fiber shaped parts, but also need to preprocess the mold, wipe dust and impurities, coated plastic film, coated release agent, etc.;
4. Prepreg layering: The next step is to lay the carbon fiber prepreg in the appropriate direction, and select the amount of stacking according to the demand.
It is also important to keep compacting during the stacking of the prepreg to prevent the gap between the carbon fiber prepreg and affect the performance of the shaped carbon fiber.
Layering of prepreg is usually done by hand, which is a very challenging step for manufacturers.
 
5. Sealing: For the special-shaped parts with large space in the middle, placing a vacuum bag in the middle is a more appropriate processing method, which involves the problem of sealing.
The vacuum bag is not full when placed into the mold, which provides space for subsequent pressurization.
Vacuum bag sealing ensures successful pressurization and extruding the excess resin from the inside, ensuring a more even distribution of properties during the shaping of the carbon fiber profile.
 
6, processing and curing: preparation work to do enough carbon fiber prepreg semi-finished products into the outer mold, close the outer mold, and then into the high temperature molding equipment.
The vacuum bag is filled with air at the right pressure, and the temperature and pressure are controlled for a certain amount of time to ensure that the carbon fiber will gradually solidify and form.
 
7, finished product processing: after the carbon fiber shaped parts are formed, the release from the mold, the hand is only a shape is not up to the standard of intermediate products, so can not be delivered to the customer's hands.
It is necessary to process the shape through multiple processes, eliminate excess impurities, water washing, coarse grinding, painting, fine grinding, etc., to basically complete the overall processing.
In addition, for special-purpose carbon fiber shaped parts, still need to pass some tests before formal delivery.
 
The process of carbon fiber shaped parts is time-consuming and expensive, so many traditional industrial enterprises have not accepted.
At present, carbon fiber shaped parts are widely used in aerospace, military equipment, automobile manufacturing and other fields. In order to popularize in a wide range, it is necessary to improve the processing technology of carbon fiber finished products.
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