Application of Large Size Autoclave Tank

Large size autoclave tank (also called composite autoclave or carbon fiber autoclave) is applied in some aerospace composite materials parts such as aircraft wings. The large size autoclave tank is the necessary processing equipment for all these parts due to its integral forming process. We will give an introduction of large size autoclave tank application scale.

The curing process takes place inside the large size autoclave tank with specified curing system formulate to guarantee the curing parts quality. Heating parts is processed according to the designed temperature and give pressure. Pressure is appropriate to ensure parts compaction, it ensures not only the discharge of air and volatile, but also not knead out too much resin. It will confirm the heating and pressure program by testing resin curing process of viscosity, dielectric constant, or change of heat reaction. Available structure of mould simple restricts parts compactness, and the porosity low; the parts of fiber direction and volume fraction and the size and shape can be ensured. This is more suitable for laminate and sandwich for structural composite materials forming. Most of aviation and aerospace large bearing structural parts often use this forming technical process.

For now the application of large size autoclave tank scope is mainly used in aerospace, aircraft wings, fuselage shell, rocket, satellite parts, etc, weapon industry category (re-engineering protective armor, weapons, helmets and bulletproof glass and bulletproof vests, etc), car industry category (production of car body, mechanical components, transmission shaft, a frame and its internal components), rail transport category (composite high-speed trains and subway doors and Windows, etc), autoclave sports category (composite, jump bar racket, golf clubs, rowing, etc).

About STRENGTH Equipments

Taian STRENGTH Equipments Co., Ltd is the professional pressure vessel designer, manufacturer and exporter dedicated in supplying finest quality industrial autoclave, storage tank and dish head products and solutions to worldwide customer over 20 years. We have over 80 talented research and development experts, 2 million square meters manufacturing factory and more than 50 sets large-scale manufacturing machines. Our annual industrial autoclave and storage tank output can reach over 300 sets, dished head output can reach over 3000 sets.

STRENGTH Equipments is not only manufacturing high quality industrial autoclaves, storage tanks and dished ends but also providing custom product design, fabrication and after-sale service. ODM, OEM are also available. If you have any questions or inquiries, please fill and submit the following form, we will reply as soon as possible.

Technical Process of Carbon Fiber Yarn Oven

The curve of carbon fiber yarn oven (also called composite autoclave) matrix resin mainly influence by resin molecular structure, also influenced by other components such as curing agent, cross-linking accelerator and so on. Outside conditions such as temperature, pressure and time are very important to curving process, these three datas called process parameters.

Now the current domestic and foreign carbon fiber yarn oven resin curing pressure, except for polyimides, is generally controlled within the range of 0.3-0.6Mpa. Composite materials pressure for carbon fiber yarn oven is  usually lower than 1.6Mpa. For technical process, the transformation of matrix resin from linear structure to three-dimensional network structure can be divided into three stages such as flow stage, gel stage and curing stage, this process is among stable temperature. Domestic aircraft structure used composite matrix resin curing temperature. This temperature is the upper of domestic carbon fiber yarn oven temperature.

Distribution of temperature in composite autoclave will have air stirring circulation device in it, the main function makes the temperature uniform.

The main composite materials production defects from high to low is stratification, porosity, rich fat, poor adhesive, debonding, looseness, weak adhesive and deformation, among this stratification take high, the proportion of excess over pores and pores is also relatively high, while the proportion of other defects is relatively low. So stratification defects are composite autoclave technical process. When the material system is consistent, the delamination is mainly affected by the structural form and technological conditions of composite components.

About STRENGTH Equipments

Taian STRENGTH Equipments Co., Ltd is the professional pressure vessel designer, manufacturer and exporter dedicated in supplying finest quality industrial autoclave, storage tank and dish head products and solutions to worldwide customer over 20 years. We have over 80 talented research and development experts, 2 million square meters manufacturing factory and more than 50 sets large-scale manufacturing machines.  Our annual industrial autoclave and storage tank output can reach over 300 sets, dished head output can reach over 3000 sets.

STRENGTH Equipments is not only manufacturing high quality industrial autoclaves, storage tanks and dished ends but also providing custom product design, fabrication and after-sale service.  ODM, OEM are also available. If you have any questions or inquiries,  please fill and submit the following form, we will reply as soon as possible.

How to Choose the Advanced Pressure Autoclave Manufacturer?

Pressure autoclave (also called composite autoclave or carbon fiber autoclave) has been for composite materials production for many years. How to choose the reliable and advanced pressure autoclave manufacturer? It should take all aspects into consideration, you now pay great attention to the following points.

Pressure autoclave is an integrated system equipments which can come true for timely control of temperature, pressure, vacuum and other technical process.

The Main System of Pressure Autoclave

①Autoclave Body

②Gas System

③Heating System

④Air Circulation System

⑤Cooling System

⑥Vacuum System

⑦Control System

How to evaluate the quality and performance of pressure autoclave? The answers are as followed.

①Opening door device and seal type all belong to autoclave body. Among the door open type, it can be manual and hydraulic automatic, all adopt double safety interlocks. This design type and idea is advanced in domestic and overseas. Pressure autoclave has a performance of high efficiency, easy operation and safe usage. It also can open and close door when power off.

②Tank door flange use inflatable silicone seal, it will be automatic inflatable seal by compressor air when working.Tank inside pressure will push out the seal ring from groove. Tank door will not have air leakage if have pressure in it. The higher pressure, the better seal. Releasing the air and draining the tank pressure will move seal ring back to flange seal groove automatically after door open Inflatable seal will be never wear, it is convenient and multi-purpose, simple maintenance. Sealing effect is obviously better than other ways, sealing ring service life of more than 1 year. This also one symbol of advanced pressure autoclave.

③Most of users now pay great attention to the temperature control. It will greatly influence products quality depends on the temperature control accuracy or not. Higher temperature will lead to the earlier of cross-linking reaction materials and quick forming speedy during the composite fiber mould press forming. This can cause the material curing difference of inside and outside cavity. During this process, surface material hardened first, and the inner layer also cured, will lead the the low molecular matter produced by the cross-linking reaction is difficult to volatilize outwards. All these process will cause composite fiber products swelling, cracking and warping, this can influence the products performance. The resin and other materials will decompose due to the material inner layer cured and material surface overheated. This process will lead to the deterioration of the mechanical properties of carbon fiber products. However, if the temperature is too low, the material fluidity decreases, the curing speed slows down, and the cross-linking reaction cannot be fully carried out. Then the strength of the product will become low, and the low temperature curing incomplete surface will not be able to withstand the internal pressure, so there will be swelling.

Taian Strength Equipments Co., Ltd has been developing and manufacturing pressure autoclave for over 30 years. We have adopted advanced technology to design the composite autoclave. The temperature section and the pressure section are divided into ten sections, each consists of the heating (cooling) stage and the insulation stage. In the heating stage, the heating rate is set to be positive value. Similarly, if it is at cooling stage, the cooling rate will be negative value. In the insulation stage, will set an insulation time. Once reach the time, system enter into next stage automatically. If no need set insulation time, it can be set to zero. System will enter into next stage automatically not via the insulation stage.

Strength Equipments can realize the temperature control accuracy at ±0.5℃, pressure control accuracy at ±0.01Mpa. Uniform temperature in the tank can reach ±1-±3℃, this accuracy can satisfy your demand easily. In additional, the data in the production process can be displayed by the monitoring screen. It also can set and print out based on your requirement.

About STRENGTH Equipments

Taian Strength Equipments Co., Ltd is one of the most advanced pressure autoclave manufacturers in China over 20 years in design and manufacture of composite autoclave. We can provide customized pressure vessel product design, manufacturing and after-sales service according to customer requirements, as well as ODM, OEM. We have many talented research and development experts and more than 50 sets large-scale manufacturing machines. The products are reliable quality and timely delivery, and we have long-term and stable cooperation with many well-known domestic composite material manufacturers, carbon fiber manufacturers, sports goods manufacturers, military supplies manufacturers and so on. We had provided finest quality products and good after-sales service to over 20 countries and  regions, won the majority of users praise, sincerely welcome you to visit our company.