Over deze norm
ISO 48-6 specifies a method for the determination of the apparent hardness, expressed in International Rubber Hardness Degrees (IRHD), of vulcanized- or thermoplastic-rubber roller covers. The method is similar in principle to the methods used for the determination of the hardness of rubber in ISO 48-2 in that it consists essentially of measuring the depth of penetration of a spherical indentor operating under a specified force. The apparatus used is similar to that described in ISO 48-2, having a base specifically designed for application to roller covers and similar curved surfaces.
|Nederlandse titel||Rubber, gevulcaniseerd of thermoplastisch - Bepaling van de hardheid - Deel 6: Schijnbare hardheid met de IRHD methode|
|Engelse titel||Rubber, vulcanized or thermoplastic - Determination of hardness - Part 6: Apparent hardness of rubber-covered rollers by IRHD method|