2021年7月30日星期五

Why Laboratory Autoclave More and More Popular?

The laboratory autoclave (also called laboratory composite autoclave) is a small autoclave for carbon fiber. The composite autoclave is mainly used in universities, research institutions and other laboratories .To study the optimal control parameters (temperature, pressure and vacuum degree process) of prepress molding process, and to prepare composite one-way plates, laminated plates and small components. The laboratory autoclave is a basic tool for the academic research of composite materials . It is an important equipment for the research and development of high-performance composite products.



Due to their importance, the composite autoclave are equipped in more and more factories . Just before the laboratory composite autoclave can only do some related test in the laboratory. But now in order to reduce costs, factories can use this laboratory autoclave to do some technical process trial production. They can find problems and solve it. Finally reach their cure forming process by this. Now we give introduction why the laboratory autoclave more and more popular.

1. Simple and high efficient mould.  As a usual, large size autoclave is mainly used for large complex surfaces, wall panels and shells forming, etc. The formation of various aircraft components are also made by the composite autoclave. Obviously different with it, our laboratory autoclave is a small equipment which is mainly used for test, and not for rising production capacity. This is the main advantage of it.

2. High safety. The composite autoclave is equipped with automatic pressure safety locks, manual safety locks, automatic relief pressure control device, manual exhaust valve, and automatic over pressure alarm.

3. Good performance of autoclave cap sealing. Fluorine rubber sealing ring is installed inside of autoclave. It will not leak even if having high pressure in it. The more higher pressure, the more better sealing. This type sealing is more better than other types.

4. Manual open door. Due to small size, many operations will only need one people to do it. One people can easily open and close the door.

5. Uniform temperature and pressure. In order to make its production quality more accurate, we have carried out some designs. It features its small working space, can easily formed uniform temperature and pressure conditions, constant and unbiased pressure, high mechanical and physical properties, excellent form-ability.

Now we can give the answer why laboratory autoclave becomes more and more popular. It is using small costs to reach better technical process. Due to the high laboratory autoclave price, so the total costs will reduce obviously. The costs are huge for the factory, because it can reduce every-time production of each unit materials.

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.

2021年7月22日星期四

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.


2021年7月15日星期四

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.

2021年7月1日星期四

Hot Press Forming process of Clad Dished Head

Clad dished head is one kind of dish head, as a part of pressure vessel, connected with shell using welding type. For example, there are spherical shape, oval shape, torispherical shape, spherical crown shape, cone shape and flat shape, etc. According to the different clad dished head geometry . In welding, clad dished head is divided into butt welding head and socket welding head. And the head mainly used for different kinds of pressure vessel. Such as storage tank,heat exchanger, tower, reactor vessel and separate equipment, etc. The main material of clad dished head have carbon steel(SA516Gr70, A3, 20#, Q235, Q345B, 16Mn and so on), stainless steel(304, 321, 304L, 316, 316L and so on). And alloy steel (15Mo3, 15CrMoV, 35CrMoV, 45CrMo ), aluminum, titanium, copper, nickel and nickel alloy etc.




Firstly ,the end is consists of base material and clad material. Then the clad material as a usual is stainless steel. The base material as a usual is carbon steel. The reason to choose the carbon steel is that mainly consider its high strength. For stainless steel ,there is nothing to say more. Mainly considering its anti corrosion. Now the head is mainly used for the high pressure vessel industry. Its working medium needs anti corrosion. At now stage ,there are mainly explosive, rolling , diffusion welding , overlay, insert metal ingot method to production clad plate. This explosive method is the mainly used among these.

Process of clad dished head hot pressed forming mainly have the following:

  • Making the workpiece into the furnace heat after heating to 380℃ in the furnace body. The heating temperature between 940℃and 950℃. During the heating process, controls to reach the heating temperature within 15 minutes. By adjusting the amount of fuel injection and then kept the temperature 5 min.
  • Preheat the cavity to 500-550℃.
  • Place the heated workpiece in the cavity for pressing, and the pressing time is 2-3min.
  • Wind cooling theclad dished head to below 500℃ after pressed forming within 3min.

In a word, it should strictly control the heating process parameter. And holding time after workpiece preheat into furnace heating. So this can avoid effectively avoiding slow cooling to produce carbides. And can work a long life due to the short time pressed. It should cool the clad dished head below 500℃ by using wind cool within 3 min after forming.

As a usual , hot pressed is mainly used for a higher thickness clad dished head. It should choose a suitable manufacturing way depending on its thickness.

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.