Product introduction:
The automatic static mixing vacuum casting equipment belongs to a more complete configuration of static mixing vacuum casting equipment. It can use semi-finished products (AB) materials such as resin plus silicon micro-powder and hardener plus silicon micro-powder, or raw materials such as resin, hardener, and filler. It is suitable for small batch production or large batch production.
Precise measurement and proportioning have a significant impact on the physical and electrical properties of the castings. Therefore, the accuracy of the ratio of resin to hardener directly affects the quality of the casting, and the proportioning is completed by the measuring pump. The plunger of the designed measuring pump is separately guaranteed by the executive motor for the suction and extrusion of the resin and hardener (which can contain fillers). Due to this structure working in a volumetric manner, the sealing and wear resistance of the measuring pump are crucial. The movement stroke of the measuring pump plunger determines the amount of push material.
When the wear resistance gap is small, it is easy to cause cylinder sticking, and due to the action of the filling material quartz powder, it will increase the wear of the plunger and cylinder liner. When the gap is large, it will cause material leakage, resulting in inaccurate measurement. The structure we designed uses special materials and process structures to ensure the wear resistance of the measuring pump. And the clearance of the measuring pump plunger and temperature, so that the surface of the plunger forms a mucus with a higher viscosity, thus allowing the resin or hardener to form a sealing ring between the plunger and the cylinder liner. This layer of high-viscosity sealing ring effectively prevents the leakage of the material, ensures the movement seal of the plunger, greatly improves the measurement accuracy, and solves the contradiction between wear resistance and measurement accuracy.
The static core technology is a two-component epoxy resin mixture. It is mixed evenly through the static mixer. In principle, the shorter the mixing time of the two-component mixture, the fresher the material obtained. Compared with the traditional dynamic mixing method, the mixed material is fresher and is suitable for the casting use of high-grade products.
The principle of static mixing and casting equipment is to push the material with equal pressure through the measuring pump to achieve "material segmentation - position movement - rejoining" turbulence. In addition to the above three situations, the fluid will also generate intense eddies in the cross-sectional direction, with strong shear force acting on the fluid, further dividing and mixing the fluid, and finally mixing to form the required emulsions. The reason why it is called "static" mixer is that there are no moving components in the static mixer. Through the cross-type, it realizes mixing more than hundreds of millions of times in an instant, which largely shortens the mixing time, and basically gives all the chemical reaction time of the two-component materials to the mold to be completed!
Certification :
Calibration Certificate(cost additional)Price :
NegotiableDelivery Time :
90 DaysPayment Terms :
L/C, T/TBrand Name :
HCTEModel Number :
HCTE-Ervce-008Main components:
The automatic static mixing vacuum casting equipment mainly includes a set of resin feeding and conveying system, a set of hardener feeding and conveying system, a set of filler ton bag unbagging and conveying system, a set of filler drying and conveying system, a set of resin mixing and degassing tank system, a set of hardener mixing and degassing tank system, a set of resin measuring tank system. A set of hardener measuring tank system, two sets of high-precision silicon carbide measuring pump systems, a set of static mixer system, a set of vacuum casting tank system, three sets of vacuum systems, six sets of heating systems, a set of cooling water system, a set of compressed air system, a set of control system, a set of equipment steel frame.
According to the user's capacity requirements, if the capacity requirements are small, the configuration can be simplified. After simplification, there is a set of resin feeding and conveying system, a set of hardener feeding and conveying system, a set of resin measuring and degassing tank system, a set of hardener measuring and degassing tank system, two sets of high-precision silicon carbide measuring pump systems, a set of static mixer system, a set of vacuum casting tank system, two sets of vacuum systems, four sets of heating systems, a set of cooling water system, a set of compressed air system, a set of control system, and a set of equipment steel frame.
Product features:
The automatic static mixing vacuum casting equipment is extremely suitable for products with high quality requirements, high voltage levels, and large outer dimensions. The final mixing tank of the dynamic equipment is replaced by the static mixer of the static equipment, and the materials pushed by the measuring pump with the same pressure and the same or different ratios are mixed in a through-type manner. The mixing time is short, the mixed material is fresh, the flow performance is superior, and the infiltration of the coil is improved.
In short, the gel state of the first kilogram of mixed material cast in the dynamic mixing tank is different from that of the last kilogram of mixed material. The viscosity and wettability of the material that enters the mold later are much lower than those of the material that goes in earlier, that is, the quality is uncontrolled; while the gel state of the static mixing is exactly the same for each stroke hitting the mold, regardless of time. The principle is mainly to use the powerful function of the measuring pump to push the material, and cooperate with the static mixer, that is, mix as needed, so as to ensure the freshness of the cast material, the consistency of infiltration and fluidity. Through-type mixing, the mixing time is about two seconds, which also ensures the freshness of the material. This ensures the quality of the finished product, and there is no requirement for the size of the finished product.
Application fields:
Dry-type transformers, dry-type transformers, dry-type reactors, basin-type insulators, insulating parts, and other coil products require one for the casting production. Its main function is to cast epoxy resin into the mold, which is also a more important link in the production of dry-type products. Specifically, after the wound coil is loaded into the mold and pre-baked in the oven to reach the temperature required for the active flow of the resin, it is transferred to the casting tank for vacuum casting of epoxy resin to the coil in the mold. After the epoxy resin fills the mold and the coil, it is transferred to the hardening oven, and after being completely solidified in the hardening oven, it is towed out to remove the mold, and a complete dry coil can be obtained.
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