In order to adjust the load of the keys, the hardness of the compound will often make some adjustments. The most commonly used silicone rubber compound hardness is usually 30 degrees, 50 degrees and 70 degrees of three, although only three kinds of hardness of the compound, but it can be deployed out of 30 degrees to 70 degrees between any kind of hardness. If you need to pVisit Siteroduce a silicone rubber product needs 6kg hardness requirements of 55 degrees of the rubber, you can use 4.5kg of 50 degrees and 1.5kg of rubber compound is made of 70 degrees, can also use 2.25kg of 30 degrees of glue Material plus 3.75kg 70-degree compound from the deployment. If the math better friends just out a Formula 1 operator can come to the deployment of rubber ratio, if the math is not good friends can also apply the following formula to easily calculate.
1.(high degree of hardness – the number of target hardness) ÷ (high degree of hardness – low degree of hardness) × required weight = low hardness compound weight
2.The required weight – low hardness compound weight = high hardness compound required weight
See here, I believe you have to understand how to calculate the hardness of the deployment, but said in front of the degree of rubber by 50 degrees +70 degrees rubber material or 30 degrees +70 degrees rubber compound can be deployed to 55 degrees of rubber, then the The actual production can be used to adjust the hardness of the two values:
Choose the hardness difference of the two kinds of rubber to the deployment of the hardness of the hardness, unless the last resort, or do not recommend the use of 70 degrees +30 degrees two kinds of rubber to the deployment of hardness, because these two compounds with mixing not only when mixing extremely Nien roll, but also in the hydraulic molding is also very viscous mode, the demoulding will cause some difficulty, especially the more complex structure of silicone parts and silicone rubber keys.