Product Description
Mitsubishi PLC controlled die-casting hydraulic heat press machine for APG epoxy resin insulators bushings sf6 transformers
APG Machine for APG Processing
Summary:
APG clamping machine is large-sized equipment,mould as large as 1100*1000mm,has large upper and lower core pulling distance.
It is appliance for large-sized products such as transformer,large insulating cylinder,contact cover,bending plate,insulating housing,disc insulator,etc.
The composition of the APG Claming Machine:The main machine+Mixing device(three sets)+ Stirring rack+Hydraulic Oil Pump+ Power distribution cabinet.
Automatic pressure Gelation Process
APG process (Automatic Pressure Gelation Process referred to as the APG process) was first filed a patent on June 19, 1969 by Ciba-Geigy, Switzerland. In China, with the development of pressure gelation equipment and its continuous improvement under the Coal Research Institute, as well as the gap between local epoxy resin specialized for pressure gel and imported material increasingly narrow, pressure gelation process in the electrical insulation industry has also been expanded, and has played an irreplaceable role. Pressure gelation technology is now successfully used in the production of high quality enclosed pole, cross-fluorinated sulfur load switch housing, transformers and other products.
Pressure gel process to produce the insulators as outlined below:
1.material pretreatment
A certain percentage of epoxy resin speical for pressure gel, curing agent, fillers, colorants join the mixing tank. Stir 1 to 2 hours to mix material evenly and no bubbles in the sealed pot under a vacuum state (absolute pressure is less than 500Pa).
2.injecting, forming
Pretreated epoxy resin mixture is injected into the APG mold preheating to 140deg with the help of compressed air or pressurized pump. The mixture is released from the mold after thermal gel forming and get semi-finished products.
APG mold should be set aside suitable gap in a specific parting line surface in order to discharge the air from the mold in the process of injecting material. After the gel injecting into the mold, the epoxy resin due to rapid heating fill into the small gap, leaving the mold in a sealed state, so the material within the mold under pressure gradually gel to get a close texture product. In order to make the mold parting line surface leaving some gap not only able to exhaust but also reliable seal, which require higher accuracy of the mold, especially for some of the complex structure of the insulators, the mold is with much higher accuracy requirements. In short, Pressure gel mold is equipped with a high technical content.
3.curing
After injection, the products are transferred to the oven, and the finished products get dense and low internal stress after slow cooling under constant temperature of 140deg 10 hours.
Clamping Plate
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1000*1200mm
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Upper and Lower Core-pulling stroke
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900mm/800mm
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Mould Clamping Fprce
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220KN
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Mould Clamping Speed
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3.2m/min
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Max Mould Clamping Distance
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1450mm
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Min Mould Clamping Distance
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250mm
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Power Of Hydraulic Station
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5.5KW
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Inclination Angle Of Complete Machine
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Vertical 5certigrade Horizontal 5certigrade
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Weight Of complete Machine
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7100KG
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Mould-filling Weight
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6T
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Outline Dimension
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5100*1680*4530mm
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