Applicable to the product development process in trial production of small quantities, complicated structure, uniform wall thickness, meet
certain functional requirements of the prototype.
Technical parameters:
Suitable for mold: silicone mold (life 10-20 parts).
Pouring material: double component polyurethane PU. Currently used materials: AXSON polyurethane, Hei-cast polyurethane resin.
Physical properties: similar to ABS, PP,, PMMA/PC, transparent, soft rubber parts (D 40-90shord), high temperature resistant parts (150), fire materials, etc..
General working hours: 1-4 hours / pieces.
Standard copy accuracy: + 0.20mm/100mm.
Casting sample thickness: minimum 0.5mm, the best is 1.5 mm-5 mm.
Maximum casting work: 2000mmX1200mmX1000mm。
Process:
1 silicone mold preheating: the silicone mould is heated to 60-70, and the mold temperature is too low, it will cause the curing is not complete,
causing the physical properties. Die temperature has a direct relationship to the size accuracy of the test piece.
2: pre deaeration castable respectively A, B two liquid vacuum defoamation treatment for more than 30 minutes in the vacuum box.
3 pouring: will be filled with A liquid and B liquid containers were placed in the operating room. Working chamber pumped to vacuum from time
to time mixing solution B to deaeration 5-10 minutes, a liquid into liquid B in stirring 30-40 minutes after quickly poured into the silicon rubber
mold. And the operation of the 1 -1 in 30 seconds after the start of the mixing.
4 curing: in the constant temperature box of 60-70 for 30-60 minutes after curing, you can release. 2-3 hours of the two curing in the constan
temperature box at 70-80 is necessary.