IS 12893: Pyrometric Reference Cones for laboratory use

2006·0.99 MB·English

by  Bureau of Indian Standards

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IS 12893 (2006): Pyrometric Reference Cones for laboratory
use [MTD 15: Refractories]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
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“Knowledge is such a treasure which cannot be stolen”

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IS 12893:2006
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Indian Standard
PYROMETRIC REFERENCE CONES FOR
LABORATORY USE — SPECIFICATION
( First Revision)
ICS 81.080

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0 BIS 2006
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002
February 2006 Price Group 2
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... . ... . —. ———. _ .~ ‘“.T’”r , ,,: .,. —%_ “-
Refractories Sectional Committee. MTD 15
NATIONAL FOREWORD
This Indian Standard (First Revision) which is identical with ISO 1146:1988 ‘Pyrometric reference cones for
laboratory use — Specification’ issued bythe International Organization for Standardization (ISO) was adopted
by the Bureau of Indian Standards on the recommendation of the Refractories Sectional Committee and
approval ofthe Metallurgical Engineering Division Council.
This Indian Standard was originally published in 1990. This revision of the standard has been taken upto align
itwith 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 without
deviations. Certain terrninolocw and conventions are, however, not identical to those used in Indian Standards.
Attention is particularly draw; to the following:
a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read
as ‘Indian Standard’.
b) Comma (,) has been used as adecimal marker while in Indian Standards, the current practice isto ‘ t.
use a point (.).as the decimal marker. t
Inthis adopted standard, reference appears to the following International Standard for which Indian Standard
also exists. The corresponding Indian Standard which is to be substituted in its place is listed below along
with its degree of equivalence for the edition indicated: 4
/international Standard Corresponding Indian Standard Degree of Equivalence
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ISO 528 Refractory products – IS 1528 (Part 1):1980 Determination of Technically Equivalent
Determination of pyrometric cone pyrometric cone equivalent (PCE) or
equivalent (refractoriness) softening point (second revision)
t

Inreporting the results of atest or analysis made inaccordance with this standard, ifthe final value, observed
or calculated is to be rounded off, it shall be done in accordance with IS 2 :1960 ‘Rules for rounding off
numerical values (revised)’.
IS 12893:2006
ISO 1146:1968
Indian Standard
PYROMETRIC REFERENCE CONES FOR
LABORATORY USE — SPECIFICATION
( First Revision)
1 Scope and field of application 3.1 pyrometric reference cone: A blunt-tipped skew i
triangular pyramid with sharp edges, of specified shape and
dimensions and of such composition that, when mounted and
1.1 This international Standard specifies the characteristics heated under specified conditions, itbends ina known manner
of a standard series of pyrometric reference cones, which are with reference to the temperature (see 3.2).
used for determining the pyrometric cone equivalent (refrac-
toriness) of refractory materials, over the temperature range
1500to1800”c. 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
1.2 The pyrometric reference Genes specified inthis interna- mounted when the cone is heated at a specified rate under
tional Standard are suitable for use inthe procedure described specified conditions.
in ISO 528, excluding determinations at 1500 and 1800 ‘C.
4 Dimensions and shape of cones
2 Reference
4.1 The nominal dimensitms of a cone shall be as shown in
1SO 528, Refractory products – Determination of pyrometric figure 1.
cone equivalent (refractoriness).
4.2 The shape of acone shall beasindicated infigures 2or3.
3 Definitions 4.3 A cone may lean in the direction of an edge, as in
figure 2, orinthe direction ofaface, asinfigure 3. The angle to
For the purpose of this International Standard, the following the vertical to be made by the leading edge or face when the
definitions apply. cone ismounted, shall be 8 * 1°.

Base
h=30mm
b. 8,5mm
Figure 1 Figure 2 Figure3
1
IS 12893:2006
ISO 1146:1988
5 Reference temperatures 7 Verification of temperature of
collapse
Each reference cone shall be of such composition that the
temperature of collapse is one of the temperatures shown in The reference temperature of each batch of cones having the
table 1, with a tolerance of + 5 K. same nominal reference temperature shall be verified for con-
formity to clause 5 by carrying out the procedure specified in
ISO 528 on asample of the batch. The temperature of collapse
6 Rate of heating shall be determined by a calibrated thermocouple. The sample,
to be taken at random from the batch, shall consist of 2 YO of
Each pyrometric reference cone conforming to this interna- the batch with a minimum of two cones.
tional Standard shall be suitable for heating to its reference
temperature at a rate of 2,5 K/rein.
Table 1 – Raference temperatures and 8 Marking
consdesignations
Each reference cons conforming to this International Standard
Cone Temperature Cone Temperature shall be marked with the appropriate cone designation as
[ designation Oc designation Qc shown in table 1.
1s0Im 1550 1s0 166 1660
ISO 152 1520 1s0 166 1660
1s0 154 1540 1s0 170 1700
1s0156 15ecl ISO 172 1720
1s01* 1580 1s0 174 1740
1s0160 1600 ISO 176 1760
ISO 162 1620 ISO 178 17&l
1s0 164 1640 1s0 160 I&Xl

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IS 12893:2006
ISO 1146:1988
Annex
Comparison of the properties of different brands of pyrometric
reference cones
(This annex does not form an integral part of the Standard. )
Table 2 – Summary of referencetemperaturesand conedesignationsof ISO, Seger, Orton and H.P.C. pyrometric
reference cones
erence
)erature ‘eger ‘“p”c” t~;~’a=e ‘sO ‘eger ‘rton ‘“p’c” te‘mefp::ecreature ‘sO ‘eger ‘non ‘“p”c”
Oc Oc
605 022 022 1315 11 1665 30 30
650 021 021 1330 1660 166 30 31
675 020 020 1340 ~! ; : ,6go — 31
695 019 019 1350 ~ 11 13 12
715 018 018 1700 170 31 311
735 017 017 1375 ~ 12 - 13 1710 32 32
760 016 016 1395 13 14 –
785 o15a O15a 1720 172 324 324
815 014s 014a 1410 14 — 14
835 – 013a
645 013a – 1430 I_ 15 15 1730 – 33 – 33
855 — 012a
880 — Olla
890 012a – 1440 15 – – 1740 174 334 33 –
1460 — — 16
900 Olla OIOa 1470 16 – –
1460 — — 17 1750 34
925 OIOa 09a 1490 — 16 – 1760 176 34 34 –
840 09a 06a 1500 l!XI 17 – 18
1770 35
965 06a 07a 1510 – – 17 – 1760 178 35
975 07a ~ 06a 1520 152 18 18 19 1785 35 36
1, 995 06a 05a 1533 – – — 20 1800 180 36 36
I010 05a — 1540 154 19 19 –
1020 — 04a
1040 — 03a
I 055 04a , 02a 1820 37 37
1070 03a — 1560 156 20 I 20 — 1830 37
1080 {– Ola
1100 02a la 1835 38
1850 36
1125 i Ola 2a 1560 158 26 -126 1860 38 39
1145 la 3a 1600 160 27 — —
1165 2a 1605 — — 23 27 1680 39 40 39
1185 3a~$ 1620 162 27J 26 —
1200 — 6a
1220 4a — 1900 40
1630 – – 28 1920 40
1230 5a 7 1640 164 28 2–7 — 1940 41
1250 — 1960 41
1646 — — 28 ~ 29 1970 41
];% ~ : : 1960 42
1280 — 9 2000 42
1295 I 8 10 1660 166 29 29 – 2015 42
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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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