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      1. Metal Parts Products Manufacturers at China

        Metal Parts Products —Stamping & CNC Machining Manufacturers

        ABS, PP, PC, acrylic, silicone prototype production process

        Silicone prototyping
        Prototype models play a key role in the product development stage, and are used to verify whether the product design has problems.
        In our prototype industry, compound mold is one of the prototype processing methods. Mainly used for small batch prototype production, its advantages are fast time, low cost, and has a very good market competitive advantage. The prototype materials are ABS, PP, PC, acrylic, soft rubber and silicone rubber. Introduce what are the prototyping process of complex mold:

        Before making a silicone prototype, you need to make a sample, which can be produced by cnc processing or 3D printing. Started to produce silicone prototypes, mixing the silicone and curing agent evenly. The appearance of the mold silicone is a flowing liquid, component A is silicone, and component B is a curing agent.


        Vacuum exhaust bubble treatment: After the silica gel and the curing agent are evenly mixed, the vacuum and air bubbles are discharged. The time for vacuuming should not be too long. Under normal circumstances, it should not exceed ten minutes. If the evacuation time is too long, the silica gel will immediately solidify, causing a cross-linking reaction, making the silica gel piece by piece, unable to be painted or poured.

        Brushing or operation process: Brush or infuse the silicone that has been evacuated through the bubbles. Pour on the product (Note: Before pouring the silicone, the product or model to be copied must be coated with a release agent). Then apply the silicone to the product, and the brush must be even. After 30 minutes, paste a layer of gauze fiber weft to increase the strength and tensile strength of the silicone.

        The production of the outer mold: The general method is to surround the mold with plastic sheet or wood board, and use gypsum to fill the mold cabinet. Another way to use resin brushing. After painting a layer of resin, paste a layer of fiberglass cloth, then paint and paste again, and then repeat the two or three layers to complete the mold.


        Operation method of pouring mold: Pouring mold is used for relatively smooth or simple products. No mold line saves time and labor, that is, the product or model you want to copy. Pour the evacuated silicone directly onto the product. After the silicone is dried and molded, remove the product. (Note: The infusion mold is generally made of silicone with relatively soft hardness, so that the demolding is easier and will not damage the products in the silicone mold).
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