The production steps of silicone-coated hardware:
Preliminary preparation
1. Hardware preparation: Select appropriate hardware materials based on product requirements, such as stainless steel, aluminum alloy, etc. The surface of the hardware should be clean, free of stains and defects. If necessary, carry out corresponding surface treatments, such as anodizing treatment, copper plating treatment, etc.
2. Preparation of silicone raw materials: Select appropriate silicone materials. If it is liquid silicone, ensure that it has good fluidity, fast vulcanization, and excellent environmental performance. If it is solid silicone, operations such as batching and rubber compounding need to be carried out, and the silicone raw materials, vulcanizing agents, color pastes, etc. should be mixed evenly in proportion.
Surface treatment
Apply a primer or glue: To enhance the tightness of the bond between the silicone and the hardware, a layer of primer or special glue should be applied to the surface of the hardware. Different hardware materials and silicone materials require different primers or glues. The application should be uniform and cover all bonding areas.
Baking
Baking hardware: Place the hardware that has been coated with primer or glue into a professional oven for baking, allowing the primer or glue to have a thorough chemical reaction with the surface of the hardware to enhance the bonding effect.
Forming
Liquid silicone rubber molding:
1. The processed hardware parts are placed in a liquid silicone rubber injection mold, and the liquid silicone rubber is injected into the mold cavity through a liquid silicone rubber injection machine. Under certain temperature and pressure, it is heated and vulcanized to form.
2. Solid silicone rubber molding: Place the processed hardware parts into the solid silicone rubber mold, then place the cut solid silicone rubber sheets on the hardware parts, and finally put them into the vulcanizing machine for hot pressing molding.
Post-processing
1. Removing burrs: Semi-finished products after molding may have burrs, burrs, etc., which need to be cleaned manually. The difficulty of cleaning is related to the precision of the mold.
2. Quality Inspection: Conduct quality inspection on the finished products after cleaning, including appearance inspection, wear resistance test, air tightness test, etc., to ensure that the products meet the quality requirements.
3. Packaging and Shipment: Products that pass the inspection are packaged and then delivered to customers.