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है”ह”ह

IS 12893 (2006): Pyrometric Reference Cones for laboratoryuse [MTD 15: Refractories]

I

IS 12893:20061S01146 :1988

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Indian Standard

PYROMETRIC REFERENCE CONES FORLABORATORY USE — SPECIFICATION

( First Revision)

ICS 81.080

I I

I

0 BIS 2006

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

February 2006 Price Group 2

I

. . . . ... . .,.‘“ .T’”r , ,,: —%_—. ———. _ .~

“-Refractories Sectional Committee. MTD 15

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 1146:1988 ‘Pyrometric reference cones forlaboratory use — Specification’ issued by the International Organization for Standardization (ISO) was adoptedby the Bureau of Indian Standards on the recommendation of the Refractories Sectional Committee andapproval of the Metallurgical Engineering Division Council.

This Indian Standard was originally published in 1990. This revision of the standard has been taken up to alignit with ISO 1146 by adoption, under dual numbering system.

The text of the ISO standard has been approved as suitable for publication as an Indian Standard withoutdeviations. Certain terrninolocw and conventions are, however, not identical to those used in Indian Standards.Attention is particularly draw; to the following:

a)

b)

Wherever the words ‘International Standard’ appear referring to this standard, they should be readas ‘Indian Standard’.

Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to ‘ t.use a point (.). as the decimal marker. t

In this adopted standard, reference appears to the following International Standard for which Indian Standardalso exists. The corresponding Indian Standard which is to be substituted in its place is listed below alongwith its degree of equivalence for the edition indicated: 4

/international Standard Corresponding Indian Standard Degree of Equivalence

ISO 528 Refractory products – IS 1528 (Part 1) :1980 Determination of Technically Equivalent i

Determination of pyrometric cone pyrometric cone equivalent (PCE) or

equivalent (refractoriness) softening point (second revision)t

In reporting the results of a test or analysis made in accordance with this standard, if the final value, observedor calculated is to be rounded off, it shall be done in accordance with IS 2 :1960 ‘Rules for rounding offnumerical values (revised)’.

IS 12893:2006

ISO 1146:1968

Indian Standard

PYROMETRIC REFERENCE CONES FORLABORATORY USE — SPECIFICATION

( First Revision)

1 Scope and field of application

1.1 This international Standard specifies the characteristics

of a standard series of pyrometric reference cones, which areused for determining the pyrometric cone equivalent (ref rac-toriness) of refractory materials, over the temperature range1500to1800”c.

1.2 The pyrometric reference Genes specified in this interna-

tional Standard are suitable for use in the procedure describedin ISO 528, excluding determinations at 1 500 and 1 800 ‘C.

2 Reference

1S O 528, Refractory products – Determination of pyrometriccone equivalent (refractoriness).

3 Definitions

For the purpose of

definitions apply.this International Standard, the following

Base

h=30mm

b. 8,5mm

3.1 pyrometric reference cone: A blunt-tipped skewtriangular pyramid with sharp edges, of specified shape anddimensions and of such composition that, when mounted andheated under specified conditions, it bends in a known mannerwith reference to the temperature (see 3.2).

3.2 reference temperature; temperature of collapse:The temperature at which the tip of a pyrometric reference

cone reaches the level on which the base of the cone is

mounted when the cone is heated at a specified rate underspecified conditions.

4 Dimensions and shape of cones

4.1 The nominal dimensitms of a cone shall be as shown in

figure 1.

4.2 The shape of a cone shall be as indicated in figures 2 or 3.

4.3 A cone may lean in the direction of an edge, as in

figure 2, or in the direction of a face, as in figure 3. The angle to

the vertical to be made by the leading edge or face when thecone is mounted, shall be 8 * 1°.

i

Figure 1 Figure 2 Figure3

1

IS 12893:2006ISO 1146:1988

5 Reference temperatures

Each reference cone shall be of such composition that thetemperature of collapse is one of the temperatures shown in

table 1, with a tolerance of + 5 K.

6 Rate of heating

Each pyrometric reference cone conforming to this interna-tional Standard shall be suitable for heating to its referencetemperature at a rate of 2,5 K/rein.

Table 1 – Raference temperatures andcons designations

[Cone Temperature Cone Temperature

designation Oc designation Qc

1s0 ImISO 1521s0 1541s0 1561s0 1*1s0 160ISO 1621s0 164

15501520154015ecl1580160016201640

1s0 1661s0 1661s0 170ISO 1721s0 174ISO 176ISO 1781s0 160

16601660170017201740176017&lI&Xl

7 Verification of temperature of

collapse

The reference temperature of each batch of cones having the

same nominal reference temperature shall be verified for con-formity to clause 5 by carrying out the procedure specified inISO 528 on a sample of the batch. The temperature of collapse

shall be determined by a calibrated thermocouple. The sample,to be taken at random from the batch, shall consist of 2 YO ofthe batch with a minimum of two cones.

8 Marking

Each reference cons conforming to this International Standardshall be marked with the appropriate cone designation asshown in table 1.

2

IIS 12893:2006ISO 1146:1988

1,

Comparison

Annex

of the properties of different brands of pyrometricreference cones

(This annex does not form an integral part of the Standard. )

Table 2 – Summary of referencetemperaturesand cone designationsof ISO, Seger, Orton and H.P.C. pyrometricreference cones

erence)erature ‘eger ‘“p”c” t~;~’a=e ‘sO ‘eger ‘rton ‘“p’c” ‘ef::ce ‘sO ‘eger ‘non ‘“p”c”temperatureOc Oc

605 022 022 1315 11 1665 30 30650 021 021 1330 1660 166 30

~! ; : ,6go31

675 020 020 1340 — 31695 019 019 1350 ~ 11 13 12715 018 018 1700 170 31 311735 017 017 1375 ~ 12 - 13 1710 32 32760 016 016 1395 13 14 –785 o15a O15a 1720 172 324 324815 014s 014a 1410 14 — 14835 – 013a645 013a – 1430 I_ 15 15 1730 – 33 – 33855 — 012a880 — Olla890 012a – 1440 15 – – 1740 174 334 33 –

1460 — — 16900 Olla OIOa 1470 16 – –

1460 — — 17 1750 34925 OIOa 09a 1490 — 16 – 1760 176 34 34 –840 09a 06a 1500 l!XI 17 – 18

1770 35965 06a 07a 1510 – – 17 – 1760 178 35975 07a ~ 06a 1520 152 18 18 19 1785 35 36

1800 180 36 36995 06a 05a 1533 – – — 20I 010 05a — 1540 154 19 19 –1020 — 04a1040 — 03aI 055 04a , 02a 1820 37 371070 03a — 1560 156 20 I 20 — 1830 371080 {– Ola1 100 02a la 1835 38

1850 361125 i Ola 2a 1560 158 26 -126 1860 38 391145 la 3a 1600 160 27 — —

1 165 2a 1605 — — 233a~$

27 1680 39 40 391185 1620 162 27J 26 —

1200 — 6a1220 4a — 1900 40

1630 – – 28 1920 401230 5a 7 1640 164 28 –27 — 1940 411250 — 1960 41

];% ~ : :1646 — — 28 ~ 29 1970 41

1960 421280 — 9 2000 421295 I 8 10 1660 166 29 29 – 2015 42

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications maybe reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basi$ of comments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicates thatno changes are needed; if the review indicates that changes are needed, it is taken up for revision.Users of Indian Standards should ascertain that they are in possession of the latest amendments oredition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from Doc: No. MTD 15 (4652).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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