As the basic products of carbon fiber products, carbon fiber tubes are widely used in various fields such as aerospace, mechanical equipment, medical equipment and so on. Carbon fiber tube is often used as a load-bearing structure in the process of use, and will be connected with metal parts. Carbon fiber tube and metal parts of the common ways are: bonding, mechanical connection, mixed connection, embedded, and so on, boshi as a custom carbon fiber enterprises, to explain these connections. 1. gluing The bonding of carbon fiber tube is to use epoxy structural adhesive to connect the carbon fiber tube to the parts. It is necessary to remove the surface impurities when bonding, the latter can also be used to improve the surface roughness with chemical reagents, can consolidate the connection, with a small number of parts, light structure, high connection efficiency, anti-fatigue, vibration reduction, anti-corrosion and so on. Carbon fiber tube is not metal, but conductive, when it uses structural glue and metal connection, the two materials of chemical corrosion path is blocked, can achieve the effect of corrosion protection. 2. Mechanical connection Mechanical connection points can transfer a larger load, easy to disassemble, inspection and maintenance, to ensure the safe and effective use of the structure. However, the hardness of carbon fiber is large, belongs to difficult-to-process materials, there are some difficulties in mechanical processing. The mechanical connection mode of carbon fiber includes screw connection and Rivet Connection, among which screw connection can be divided into bolt connection, screw connection and fastening screw connection. This method can transfer large load, good peel-off resistance, allow disassembly after assembly, less environmental impact, no adhesive curing generated by the residual stress. Disadvantages are increased weight and stress concentration. 3. Mixed connections Is in the connection, the use of both mechanical connection and bonding methods, so that the carbon fiber tube and metal links between the closer, more durable products. 4. Prebury Pre-embedding is in the carbon fiber pipe and carbon fiber products prepreg layer, the metal parts on the pre-preg location, and then put into the mold for heating and pressure curing.

In the field of carbon fiber products have dry carbon fiber and wet carbon fiber said, this distinction is from the production process of carbon fiber products to show. At present, the two most commonly used methods of carbon fiber composite processing are prepreg autoclave molding mode and vacuum injection mode. As a result of the use of cloth in the process of infiltration is also a dry and wet embodiment, the following common carbon fiber wet molding and dry molding and the difference. At present, the main formula of carbon fiber composite is carbon fiber and resin composite, and there are two ways to combine the two materials. In the field of carbon fiber materials, there is a resin prepreg and fiber combination of materials called preg, in the industry will use preg to process products called dry molding, other non-preg method called wet process. At present, the way of vacuum resin injection molding is the main method of wet process, and the technology of prepreg autoclave molding is the main performance of dry process. The main step of the vacuum transfer process is to arrange the carbon fiber cloth in the preform mould (title: Mother of Industry) , and use the vacuum pressure to arrange the resin in the mould to combine with the carbon fiber, but the proportion of materials is difficult to control accurately, in the product quality accuracy (accuracy) is difficult to control. Because the prepreg is in the production of carbon fiber cloth and resin start infiltration, combined with better and high precision proportional control, after high temperature and high pressure molding, the product quality and precision higher. There are obvious differences in the properties of the products produced by the two processes. The wet process is prone to deformation in the process and the cut-off part is prone to debonding. The adhesion between resin and fiber is poor because of contact with air, prone to oxidation and discoloration. Dry prepreg process will not appear the above-mentioned situation, but in the ultraviolet radiation prone to performance degradation. Recommended understanding: carbon fiber composites vacuum molding and autoclave molding difference Carbon fiber products made from these two mode of production differ in weight and hardness, and are called wet carbon fiber and dry carbon fiber. Carbon fiber products refers to carbon fiber prepreg cloth as raw materials, through different processing methods, processing to meet the use requirements of the material products. Carbon fiber parts [Soft outside but rigid inside", the quality is lighter than metal aluminum, but the strength is higher than steel, and has corrosion resistance, high modulus characteristics, in defense and military industry and civil aspects are important materials. It not only has the intrinsic characteristic of carbon material, but also has the soft machinability of textile fiber. It is a new generation of reinforced fiber. In contrast to dry carbon fibers, wet carbon fibers will deform when the carbon fibers are vacuumed, and carbon fibers will be seen in the cross section, while dry carbon fibers will not. The carbon fiber products made by dry process have good hardness and are easy to CNC machining, but the production cycle is long and not easy to mass-produce, and the production cost is high. Carbon fiber products refers to carbon fiber prepreg cloth as raw materials, through different processing methods, processing to meet the use requirements of the material products. The cost of wet forming products is lower, the production process is relatively simple, and the production efficiency of the process is higher. At present, in the production of carbon fiber, dry molding mainly in high precision (precision) , high-quality requirements of the use of the case, the wet molding is mainly in the appearance of parts, mass production time.

Carbon fiber composite is a kind of composite material with excellent performance, which is widely used in aerospace, automobile, UAV and other fields. Due to the complex production process and relatively high price of carbon fiber, it is not common in daily life. However, carbon fiber material, a new material with high performance, has excellent material properties such as light weight, high strength and corrosion resistance, there are many areas that want to use carbon fiber composites instead of traditional materials to improve the overall performance of products. However, many customers who contact carbon fiber manufacturers will find that the cost of using carbon fiber is much higher than traditional materials, so they will ask why carbon fiber composites are so expensive? So, today I'd like to explain to you why carbon fiber composites are so expensive. 1. carbon fiber raw material itself carbon fiber production technology monopoly in Japan, the United States and other developed countries, because of the defense industry, China has been a strict technical blockade. In the past, carbon fiber was almost not made in France. Through the support of national policy and the efforts of domestic enterprises, domestic carbon fiber has been able to mass-produce carbon fibers below T800, but the quality of the products is slightly worse than that of Nissan. T800 products can only be produced in small quantities, T800 and M series can not be mass produced in China, raw silk materials are monopolized or even banned by foreign countries, so the price is relatively high. In addition, the production of carbon fiber material itself is more expensive, and the process is very complex, so the price of carbon fiber precursor are not cheap. At present, low-end carbon fiber can be mass produced at home and low-cost industries abroad, the price of raw silk is much cheaper than before, but good carbon fiber materials are still high-priced products. 2. Carbon fiber composite fabrication process carbon fiber precursor to be used must be made of composite materials in order to be specifically processed into the desired products, carbon fiber silk needs to be woven into cloth, and also needs to be combined with resin to make prepreg. Carbon fiber products need high temperature curing, vacuum introduction, autoclave and other production processes, the production process is very complex, high precision requirements, high requirements for technical personnel. In the development and design of carbon fiber products, a lot of experiments are needed, such as salt spray resistance, corrosion resistance, wave permeability test, etc. . Some carbon fiber products need high temperature resistance, high strength, resin and fiber type selection will also increase the price of carbon fiber products. At present, the carbon fiber market belongs to the emerging industry, many products belong to the pre-research stage, less standardized products. As a result of the overall research and development, design, experiments and other costs are included in the cost of products, so the price of carbon fiber products high. To achieve a certain number of orders of products, cost-effective or more cost-effective. A carbon fiber products demand friends can and intel new material technology docking, so that the domestic carbon fiber industry faster, more mature development.

CNC, also known as computer gongs, CNCCH or CNC machine tools, is actually a name from the Hong Kong side. Later, it was introduced to the mainland Pearl River Delta, in fact, CNC milling machines. In the areas of Guangzhou, Jiangsu, Zhejiang and Shanghai, there are people who call them [CNC machining centers,"a type of machining, is a new processing technology, the main work is the preparation of processing procedures, that is, the original manual work into computer programming. Hands-on experience is required, of course. Aluminum profile CNC machining has the following advantages: 1, greatly reduce the number of tooling, processing complex shape parts do not need complex tooling. If you want to change the shape and size of parts, only need to modify the parts processing procedures, suitable for new product development and modification. 2. The machining quality is stable, the machining precision is high, the repetition precision is high, meets the aircraft processing request. 3. The production efficiency is higher in the case of multi-variety and small batch production, which can reduce the time of production preparation, machine tool adjustment and process inspection, and the cutting time is reduced by using the best cutting quantity. 4. It is difficult to process the complex surface by conventional machining method, and even can process some parts which can not be observed. The disadvantage of NC machining is that the cost of machine tools is expensive, which requires high level of maintenance personnel.

Usually metal alloy surface treatment will choose electroplating or anodizing, what is the difference between the two processes. 1. different approaches In electroplating, the material to be electroplated is used as the cathode, and the same metal material as the coated metal is used as the anode (also using insoluble anode) . The coating material and the material to be electroplated are two different materials, such as beryllium copper nickel plating, beryllium copper substrate, nickel coating. Anodic oxidation uses chemical or electrochemical treatment to form a coating on the surface of the metal containing the metal. A material that acts as an anode and is protected by an applied current to form a film on the surface of the material in a specific electrolyte. If the aluminum alloy oxidation, is in the aluminum alloy surface to form a layer of alumina film, alumina chemical stability, will not be oxidized, not acid corrosion, but also dyed into a variety of colors. 2. different objects The objects treated by electroplating method are mainly metal or non-metal. The most commonly used plating metal for nickel, chromium, tin, copper, silver and gold. That is often said nickel, chromium, gold and so on. Anodizing is the method of metal surface treatment. Most metal materials, such as stainless steel, zinc alloys, aluminum alloys, magnesium alloys, copper alloys, and titanium alloys, can be anodized in an appropriate electrolyte. 3. different approaches Electroplating is electroplating material as a cathode, anodizing strip treatment material as an anode Electroplating is due to the charge effect, metal anode ions to move to the cathode, and in the cathode to get electrons and deposition on the material to be plated. At the same time, the metal of the anode dissolves, constantly replenishing the metal ions in the electrolyte. Firstly, the plating bath has six elements: main salt, additional salt, complexing agent, buffer, anode activator and additive. Electroplating principle includes four aspects: electroplating solution, electroplating reaction, electrode and reaction principle, electrodeposition process of metal. Anodizing is an electrochemical method to control the formation of oxide layer to prevent further oxidation and increase the surface mechanical properties of aluminum alloy. Generally speaking, the anode is made of aluminum or aluminum alloy, while the cathode is made of lead plate. The aluminum and the lead plate are placed together in an aqueous solution, in which sulfuric acid, oxalic acid, chromic acid, etc. are electrolyzed, to form an oxide film on the surface of the aluminum and lead. The most extensive of these acids is anodic oxidation with sulfuric acid. Aluminum alloy anodizing technology is the most widely used and most successful, aluminum alloy anodizing can greatly improve the surface hardness, wear resistance and other indicators. There are a lot of micro-holes in the film, which can absorb all kinds of lubricant and is suitable for making engine cylinder or other wear-resistant parts. Anodizing of Non-ferrous metal or its alloys, such as aluminum, magnesium and their alloys, is widely used in mechanical parts, aircraft and automobile parts, precision instruments and radio equipment, daily necessities and architectural decoration. Why is aluminium alloy not suitable for electroplating? The chemistry of aluminum is more active, if electroplating, in acidic electrolyte, the cathode on the aluminum ion in the electron reduction, the formation of aluminum salt and hydrogen. If it`s an alkaline electrolyte, it creates Aluminum hydroxide and hydrogen gas. Therefore, aluminum can not be electroplated to obtain a coating. It`s the same reason that electrolyzing salt water doesn`t get sodium metal, it gets sodium hydroxide. It is necessary to pay attention to the poor oxidation surface effect of die-cast aluminum alloy Casting aluminum alloys and die castings generally contain high silicon content, the anodic oxide film is dark, it is impossible to get colorless transparent oxide film, with the increase of silicon content, the color of the anodized film varies from light gray to dark gray to black gray. Therefore, cast aluminum alloy is not suitable for anodizing. But the effect of anodizing treatment of zinc alloy die casting is very poor, the yield is very low, anodizing treatment is also a very complicated process. Zinc alloy die castings are usually electroplated by surface treatment.

Carbon fiber cloth is also called carbon fiber cloth, carbon fiber cloth, carbon fiber woven cloth, carbon fiber prepreg, carbon fiber reinforced cloth, carbon cloth, carbon fiber fabric, carbon fiber tape, carbon fiber sheet (prepreg), etc. Carbon fiber reinforced cloth is a unidirectional carbon fiber reinforced product, usually woven with 12K carbon fiber yarn. Two thicknesses are available: 0.111mm (200g) and 0.167mm (300g). Various widths: 100mm, 150mm, 200mm, 300mm, 500mm and other special widths required by projects. With the continuous development of the carbon fiber cloth industry, more and more industries and companies have used carbon fiber cloth, and some companies have entered the carbon fiber cloth industry and developed. Carbon fiber cloth is used for the tensile, shear and seismic reinforcement of structural members. This material is used together with the supporting impregnating glue to become a carbon fiber composite material, which can form a complete carbon fiber cloth sheet reinforcement system, which is suitable for dealing with increased building loads and engineering Use function changes, material aging, concrete strength grade lower than the design value, structural crack treatment, severe environment service component repair, and protection of reinforcement projects.

1. Cutting of prepreg The specifications of the carbon fiber board are different. The staff needs to cut the carbon fiber prepreg according to the required size, and determine the number of prepreg layers required according to the thickness of the board. The greater the thickness of the board, the prepreg that needs to be laminated The more. Taking 1mm 3K carbon fiber board as an example, generally two layers of 3K carbon fiber prepreg and four layers of unidirectional carbon fiber prepreg are required. 2, layup of prepreg During production, the tensile force and strength requirements of the carbon fiber board are changed at any time. The commonly used layup directions are 0°, ±45°, 90, and the layup direction and layup sequence of carbon fiber prepreg can be designed reasonably. The angular orientation is selected according to the type of load required to maximize the use of the fiber's performance in the axial direction. 3, molding and curing The laid-up carbon fiber board is clamped, put into the press, and the temperature, time, and pressure are adjusted to a proper state. The higher the mold temperature, the better the fluidity of the resin, and the faster the curing speed. However, if the temperature is too high, the inner and outer layer materials will be cured differently, causing the product to swell and deform. Too low temperature will result in lower product strength. The pressure can close the mold tightly and densify the material, ensuring the material flow. Sufficient holding time can better cure the product.

Carbon fiber is a high-strength, high-modulus fiber with a carbon content of more than 90%. High temperature resistance ranks first among all chemical fibers. It is made of acrylic fiber and viscose bai glue fiber as raw material, which is oxidized and carbonized at high temperature. It is an excellent material for manufacturing high-tech equipment such as aerospace and aviation. It has the characteristics of high temperature resistance, friction resistance, electrical conductivity, heat conduction and corrosion resistance. The appearance is fibrous, soft, and can be processed into various fabrics. Because of its graphite microcrystalline structure preferentially oriented along the fiber axis, it has a high Strength and modulus. Carbon fiber has a low density, so its specific strength and specific modulus are high. The main purpose of carbon fiber is to composite with resin, metal, ceramics and carbon as a reinforcing material to make advanced composite materials. Carbon fiber reinforced epoxy resin composites have the highest specific strength and specific modulus among existing engineering materials.

Carbon fiber cloth is similar to cloth, light in weight, thin in thickness, and soft in texture. It can be cut at will and is woven from carbon filaments. The thickness of carbon fiber cloth is 0.167mm for 300g and 0.111mm for 200g. It is suitable for the treatment of increasing building load, changing the function of engineering use, material aging, concrete strength grade lower than the design value, structural crack treatment, service component repair and protection in harsh environments. And it can greatly help the structure in terms of shear resistance, seismic resistance and bending resistance. In use, it can be pasted in multiple layers according to engineering design requirements. It is recommended that no more than 4 layers are used. Because carbon fiber is posted in multiple layers at the same time, the tension attenuation will cause waste. Carbon fiber board is a carbon fiber composite material hardened by carbon fiber precursor and resin, similar to steel plate. The thickness of HobbyCarbon carbon fiber board is 1.2mm and 1.4mm, as well as 2.0mm and 3.0mm. It can play a very significant effect in structural bending resistance, and is often used in bridge reinforcement projects.

Carbon fiber tube, also known as carbon fiber tube, also known as carbon tube, carbon fiber tube, is made of carbon fiber prepreg wound on a core mold according to a certain layering pattern and cured at high temperature. In the manufacturing process, various profiles can be produced through different molds, such as: carbon fiber round tubes of different specifications, square tubes of different specifications, sheets of different specifications, and other profiles: 3K can also be packaged during the production process Surface packaging beautification and so on. The main reason why carbon fiber tubes can be favored is that carbon fiber composite materials have the characteristics of light weight and high strength. The carbon fiber square tubes have high strength and low density, which can fully realize the lightweight structure, and its mechanical properties are also very outstanding, and the tensile strength , Bending strength and rigidity are better than most metal structural materials. The strength can reach more than 3000MPa, which can be used for the production of various lightweight structural parts and mechanical arm rods. And high temperature resistance, corrosion resistance, aging resistance, can effectively extend the service life. The production of carbon fiber round pipes is to roll the prepreg on an inner core mold. Unlike the production of round pipes, the production of carbon fiber square pipes requires opening the entire pipe mold. First, we cut the required prepreg according to the specifications and performance requirements of the required square tube, and then manually lay the prepreg according to technical requirements and roll it. Before rolling, we need to use a wooden square tube and The inflatable bag is rolled on this basis. When all the prepregs are finished, take out the wooden square tube covered with the inflatable bag, and then put the carbon fiber square tube into the mold, close the mold, and put it in high temperature Curing furnace to solidify and shape. The size of the carbon fiber square tube is not fixed. In addition to some commonly used sizes, we can also customize it according to customer needs. And the same size, if the carbon fiber material used is different, the price will also be very different. Therefore, there is no fixed price list for carbon fiber square pipes, and they are all quoted according to customer's customized size and material requirements.