GB/T 38092-2019Vitreous and porcelain enamels - Determination of fluidity behaviour - Fusion flow test (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard uses the translation method equivalent to ISO 4534.2010 "Test Melt Flow Test for Enamel Products and Enamel Fluidity".

This standard is proposed and managed by the China Light Industry Association.

This standard was drafted. Donghua University, National Eyeglass Glass Enamel Product Quality Supervision and Inspection Center, Shanghai Glasses Glass Enamel Products

Quality supervision and inspection station.

1 Scope

This standard specifies a method for testing the enamel fluidity of enamel during firing. This method is a relative method of fluidity testing

(Comparative method), not an absolute method.

2 Principle

According to the conditions of sample preparation, it can be divided into dry preparation or wet preparation. Cylindrical sample with a certain weight can be made of enamel powder, dry

The dried glaze or the reference sample agreed by both parties is pressed.

The sample was placed on an unglazed ceramic plate in a horizontal position in an electric furnace and melted to a hemispherical shape at a predetermined temperature. Then, tilt

An glazed ceramic plate to allow molten enamel to flow at a certain angle for a predetermined period of time.

The flow length coefficient F1 and the flow width coefficient Fb are calculated based on the flow length and flow width of the sample.

3 Materials and equipment

3.1 Reference sample. It is agreed by both parties to the contract that it has similar melt flow properties to the tested enamel.