As the car drove by your side, have you often wondered about the production process of the tire of cars? Making a tire is cumbersome, but it becomes much easier and can be produced and copied in large quantities if you have a silicone tire mold.

Next we will introduce you how to make silicone tire mold using silicone rubber.

The operation instruction  of silicone tire mold:

Step 1. To make silicone tire mold, you need choose the epoxy tooling board as the original mold firstly and carve the surface detail of the tire on it. Please keep the surface and tread groove of tire mold dry and clean.

 

Step 2. The surface of finished epoxy tooling board mold is coated with release agent and dried with an air gun. The bottom and sides of the tire mold which has processed is surrounded with steel plates, and the inside of these steel plates is also needed to be coated with release agent and dried before use.

 

Step 3. During this operation of making silicone tire mold, we select tire mold silicone rubber in consideration of the size, structure, usage and performance of tire mold. The appearance of tire mold silicone rubber is flowing liquid, A component is silicone rubber, B component is curing agent. Mix and stir the two parts well.

 

Step 4. Then, we must not lose sight of the link of vacuuming to exhaust bubbles after stirring. The vacuum time of tire mold silicone rubber should not be too long, which is not more than ten minutes under normal circumstances. The silicone rubber is cured immediately for too long vacuum time, resulting in a cross-linking reflect, which become into pieces and can't brush or perfusion. Thus it leads to failure in silicone tire mold making.

 

Step 5. Brush a layer of mixture tire mold silicone rubber on behalf of the epoxy tooling board's surface including the tank evenly and meticulous. Then, pour the silicone rubber slowly along a fixed perfusion points and occasionally a few shocks is needed to eliminate the air inside.

 

Step 6. When the tire mold silicone rubber is cured fully, inject an appropriate amount of gypsum powder which has added water into the steel frame until it is filled up. The material of steel box to the bottom to the top is epoxy tooling board to silicone rubber to gypsum in order.

 

Step 7. Remove the steel frame after 20 minutes. Till now, the silicone tire mold is completed.

 

Step 8. Place the prepared tire mold silicone rubber in the steel frame for the manufacture of heart of tire mold.

 

Step 9. The gypsum powder is transferred into liquid form and poured into the steel frame slowly. Place a piece of wood on both sides of the fast curing gypsum respectively, the length and width of which is 2 cm and 1 cm respectively, forming an anchoring groove. The purpose of this step is for the convenience of molding.

 

Step 10. Insert sheet steel in the lateral pattern groove of completed plaster mold heart.

 

Step 11. Connect eight or six gypsum mould into a circular, which is made by the same method above. Then kerosene sawing into the mold heart and the heart of tire mold has been finished.

 

Step 12. Placed the gypsum outer mould which is made for the time of making silicone tire mold in the outer core. And put the outer mold and the heart of mold onto the steel plate. Next, the gypsum core is heated to 600 degrees and injected of liquid aluminum alloy. Let it cool and solid after filling.

 

Step 13. Lastly, remove this aluminum alloy tire and place it on the tire rims machine for correction to make the switch precise and in accordance with the use of standards.

2017-10-13