ISO 20202 pdf download – arbonaceous materials used in theproduction of aluminium -Cold andtepid ramming pastes – Preparation of baked test pieces and determination of loss on baking.
Baked test specimens of ramming paste need to be prepared for the determination ot properties after baking. for instance apparent density, crushing strength and porosity.
2 Normative references
The following referenced documents are indispensable for the application of th,s document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amen&nents) applies.
ISO 4955. Heal-resisting steels end aiioys
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Pa’? 2: BasIc method for the determination of repeatabIlity and reproducibility of a standard measurement method
ISO 14422. Carbonaceous materials used in the production of aluminium — Cold-ramming pastes — Methods of sampling
ISO 14427. Carbonaceous materials used in the production of aluminium — Cold and tep.d ramming pastes — Preparation of unbaked test specimens and determination of apparent density after compaction
ASTU E 220, Standard Test Method for Cahfrabon of Thermocouples by Comparison Techniques
3 Principle
Compacted test specimens of carbonaceous ramming paste are baked in a furnace by raising the temperature at a specified rate to 1 000 C and holding the temperature at this value for 2 h. The mass of each test specimen Is measured before and after baking and the loss on baking calculated
4 Apparatus
4.1 Balance, accurate to 0,1 g.
4.2 Furnace, e.g. an electricaly heated muffle furnace or chamber furnace. with a temperature-control facility enabling it to meet the requirements given in Clause 6,
9Test report
The test report shall include the following information:a)a reference to this International Standard;
b)all details necessary for identification of the sample tested;
c)the temperature used for preparation of the green test specimens;d)the results of the test,i.e.the loss on baking;
e)the date of the test;
f)details of any unusual features noted during the determination;
g)details of any operation not included in this International Standard or regarded as optional.
ISO 20202 pdf download – Carbonaceous materials used in theproduction of aluminium -Cold andtepid ramming pastes – Preparation of baked test pieces and determination of loss on baking
