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है”ह”ह

IS 4683 (1968): Chilled iron shot and grit for use infoundries [MTD 14: Foundry]

IS : 4683 - 1968

In&an Standard ( Reaffirmed ls2 )

SPECIFICATION FOR CHILLED IRON SHOT AND GRIT FOR USE IN FOUNDRIES

( Second Reprint OCTOBER 1990 )

UDC 621.7.023.2

@ Copyright 1968

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR hlARG

NEW DELHI 110002

Gr2 August 1968 #

ls:4663-1968

Indian Standard .

SPECIFICATIOti FOR CHILLER IRON SHOT AND GRIT FOR USE IN FOUNDRIES

Foundry Sectional Committee, SMDC 17 Chaimuzn

SHRI N. G. CMKRNWRTI

Ml?tlIbWS SHRI H. R. BADYAL

3/D, Nnndy Street, Calcutta 29 Rapresmting

DII P. vMUDEV.4N ( /f&l&) The Indian Iron & Steel Co Ltd, C&.utta

SHRI R. P. BAJORU SHRI I-1. N. SEN ( Alfann~e)

J. D. Joncr & Co Ltd, Calcutta

SHRX B. N. BALIQA Cooper Engineering Ltd, Satara Road ( Maharashtra state )

SHRX D. N. &NERJRE Hindurtan Machine Tools Ltd, Bangalore SHW K. NAOLSHA RAO ( Al&ma& )

SHRI P. K. BANERJZE Indian. Non-Ferrous Metals ManriFactured Associa-

Smtr-D. P. JAIN ( AIkmafe ) tion, Calcutta

SHRI NAXUB~ H. Ban The Indian Plumbago Co, Bombay . SHRI SUREaH N. BHA~ ( &cr~~~fs )

SHRX R. K. BHOWNICIC Bhartia Electric Steel Co Ltd, Calcutta SHR~ S. C. Brawny

SHRI M. K. RAO (Al&ma&) Indian Foundry Association, Calcutta

SHRI S. N. CHAUDHURY Engineering Association of India, Calcutta SHRI B. N. BALIGA (Al&mate )

SHRX S. K. DAM Bum & -Co Ltd, Howrah; and Indian Engikring -Association, Calcutta

SHRI B. CHANDA ( Alkmafr ) Bum & Co Lrd, Howrah SHRI A. S. Daa~r

SHRI S. R. MUN~HI ( Al&mate) Jyoti Ltd, Baroda

SHRX S. D. ~HINKBR SHRI H. N. KAPUOR ( AItema&)

The Tata Iron & Steel Co Ltd! Jamahedpur

DIRLCK)R, FLJZET MAINTENANCE Naval Headquarters Ministry of Defence ) SHRE P. C. C&ZL I. Uttar Pradesh Steels td, Muzaffixmagar . S~pt S. C. JAIN The Jay Engineering Works Ltd. Calcutta SHRI S. JOHRI Kumardhubi Engineering Works Ltd, Calcutta

SHRI Jb,TAgR~o”^~ ( Alfrmub ) JOINT RB~EAR~H Ministry of Railways

( M & C ), RI&FURCH, Das~am 6r STAIUDARM OROANIZATRM, CH~ARA~~JAN

CHEMIST & METALLURGY ( SF), CHITTARANJAN Loco- Y~TIM WORKS, CHITTAJ~AN- JAN (Al&n&I)

W~r~fyo~~ ( MANU?A~- ~TARANJAN

LO~O~~OT~VX WORKS, CH~AMJAN ( Afternate II )

( Cbntinueil on @ge 2 !

BUREAU OFINDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW BELliX 1lomZ

is: 46433-1968

SllHl 2. xl. i’ll.JTI1 ( .&V/rnfC )

Slukand Iton 8: Steel Works Ltd, Flomhay

1;lfRl 1’. (:. R.IPOOR lnzpeclion \Ving, Directorate General of Supplies & Disposals ( Alinistry of Works, Housing & Supply )

SIIRI Al. c. :hm ( .4llrnwts j Slu21 ,\f. N. KH.XNN.\ IIindustan Steel Ltd, Bhilai

SIlRl K. K. SARAN ( :ih,,/dt )

5111il I<. M. f;RISIIs:\N National Slctallurgical Laboratory ( CSIR ),

S,m,*B. \\‘. I;;l:Lli.4RSI .Jamsheclpur

Diwctoratc General of Technical Development 1~ Xlinistry of Industrial Development 82 Com- pany Affairs )

Srr~r Il. K. SR.~RXIA ( ~lb-~tc?lc ) Srrnr D. G. KULKARNI ‘l%e Institute of Indian Foundrymcn, Calcutta

SIIRI V. T. BALASUDKAMANI.\N ( n1ternntc )

SHRI B. V. ib~AIi.4BAl.E New Precision ( India ) Private Ltd, Dewas SHRI K. I-I. hhEADEVAPPA ‘The Mysorelron & Steel Ltd, Bhadravati

Srrar B. C;_BASA~AR~J ( ~Umnle ) SMKI hAL hhTHA hlachinerv Manufacturers Corporation Ltd, Calcutta

STIR1 11. s. P.!C:L ( .~fhW~k’ )

SIIHI N. J. hloov . Bombay Metal & Alloys hlanufacturing Co Pvt Ltd, Bombay

SllRl 7’:c. ~k:l.iJCK Elctrosteel Castings Ltd, Calcutta SHRI ?‘. KUMAR ( Albmcrlr )

-SHRI B. D. I’ALIWAL ‘I’he Britannia Engineering Co Ltd, Titaghur SHR1 H. C. PEOlJK%N The ‘I’ata Engineering & Locomotive Co Ltd,

SIIRI S. S. R. B~4~.\\\~.4ura.4~ _ Jamshedpur

( .4llcmofc ) SURI S. N. RAO Lasmi Starch Fattory Ltd, Bombay

SHRI S. PARANESHWARAN ( .*lltcma/e ) I>

SHRI K. S. S. VASAN Pioneer Equimncnt Co Private Ltd. Bombay SHRr I’. B. H. .JHAI’ERI ( .4km2tc )

DR P. \‘ASUDFXM The In&an Institute of bietals, Calcutta DR A. K. CIIATTERJEP,, Director General, IS1 ( Ex-o&i0 Member)

Director ( Strut K: 3let )

Secretay

SIIRI R. K. SRIYASTA~A

Deputy Director ( ?riet ), IS1 .

Fou:dry Abrasive Shot & Grit Sul.xo&nittce, SMDC 17 : 2

Nacbinery Nanufacturers Corporation Ltd, Calcutta

Snot P. A. EROINEZR SHR1 N. K. R*JM.Hf.4

Jndabrator Ltd, Bombay Orient Steel & Wire Industries Pvt Ltd; Calcutta

HsPaEaeNrAnvx

Sxnr R. H. Tmwar N&co-Mowat’s Metallic Grits Co Pvt Ltd, Bombay .\brasivea and Castings Ltd, Howrz$~

IS :Y683 - 1968

Indian Standard SPECIFICATION FOR CHILLED IRON SHOT

AND GRIT FOR USE IN FOUNDRIES

0. FOR.E-WORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on .27 May 1968, after the draft finalized by the Foundry Sectional Committee had been approved by the Structural and Metals Divisidn Council.

0.2 This standard has been prepared to meet the. requirements of the fdundry industry in the country. In preparing this standard, assistance has been derived from B. S. 2451 : 19@ c Specification for chilled iron shot

- and grit ‘, issued by the British Standards Institution.

0.3 For the purpose of deciding wjlether a particular rcquiremnlt of this standard is complied with, the ,, final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*., The number ofsignificant places retained in the rounded off value should be the same as that of yhe specified value in this standard.

1. SCOPE

1.1 This Indian Standard covers the requirements for chilled iron shot and grit.

2. DESIGNATION AND GRADING

2.1 Chilled iron shot shall be designated as S-C and graded by the shot number which is the aperture size of the retaining screen in thousandths of a millimetre ( see Table 1 ).

2.2 Chilled iron grit shall be designated a3 G-C graded by the grit number \vhich is the aperture size of the retaining screen in hundredths of a millimetre ( see Table 2 ).

.

3. SUPPLY OF MATERIAL

3.1 General requirements relating to the supply of chilled iron shot and grit, shall be as laid down in IS : 1387-1967t. _.._---- l hules for rounding oKnumerical valubs ( wise&).

tCcnera1 requirements for the supply of metallurical materials ( jird recision ).

3

.

TABLE 1 SHOT GRADE NUMBERS (Cfouses 2.1 md 6.1)

slews rDccifled in Amcndix A may used.

TABLE 2 GRIT GRADE NUMBERS (Douses 2.2 end 6.1)

‘, DW2?t7t,k)Or

allowed lor lmes _

NOTE-When IS sieves are not ava~lable.equivalen~ 8s or ASTM sews Appendix A may be used.

Ist4683-1968

4. IMA& . 4.1 The chilled iron shot and grit shall be qade from cast iron with a carbon content in excess of l-7 percent and of such type that the shot and grit,having been chilled shall have a white iron structure.

4.1.1 The carbon content of the material shall be determined in accordance with IS : 228-1959*.

5. SqPE

5.1’ Shot - The particles shall as far as practicable- be spherical and solid, and shall not contain more than rhc minimum practicable- amount of ~‘ tails ’ and irregular particles.

. ~5.2 Grit - The particles shall show good angularity of form with sharp cutting edges and shall be substantially free from ( half-rounds ’ ( that is, shot split in half only ).

6. SIZE . .

6.1 The particles size shall be determined by testing with sieves complying with IS: 460-1962t. The proportions retained and passed shall comply with the limits given in Tables J and 2.

Exam&s :

Shot &a& S-C 1 OOO-The whole sample passes through 1.70-mm IS Sieve. At most 5 percent is retained on the 1*40-mm IS Sieve. At least 80 percent passing through larger sieve, is retained on l-00 mm ( corresponding to the retaining screen ).

At most 15 percent passes through l-00-mm IS Sieve. ’ None passes through 710-micron IS Sieve.

Grit Grade GC 60- The whole sample passes through l-00-mm IS Sieve. Atleast 70 percent, passing through larger sieves, is retained on 600-micron ‘1s Sieve ( corresponding to the retaining screen ) . At most 15 percent passes through GCO-micron IS Sieve. + Kane passes through 355-micron IS Sieve.

7. HARDNESS TEST

7.1 The Vickers hardness number shall be determined on sound individual particles on a suitable cross-section, in accordance with IS : 1501-lC53$.

*Methods of chemical analysis of pig iron, steels ( rnimf ) .

cast iron and plain carbon and low-alloy

tbpecification for test sicvca ( revised ).

$Mcthod for Vicken hardness test for skcl.

G

IS : 4683 - 1968

7.1.1 Particles shall be mounted in a suitabIe material, such as a thermosetting plastics material, and polished. If the particle cracks during the test, the result shall not be counted.

7.2 The hardness of any particle shall not be less than 750 i-IV.

8. PACKAGING

8.1 Unless specified otherwise the material shall be supplied in waterproof double gunny bags or inner polythene bags each containing 50 kg.

9. MARKING

9.1 Each container shall be clearly marked with the ibllowing information:

a) Manufacturer’s name or trade-mark, and

b) Size and type designation of the material.

9.1 .l The material may also be marked with the IS1 Certification Mark.

NOTE - The use of the IS1 Certification Mark is governed by the provisions -of the Indian Standards Institution ( Certification Marks ) Act and theRules and Regulations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a welldefined system of inspection, testing and quality control which is devised and supervised by ISI and o products arc also continuously checked by P

crated IS

by the producer. IS1 marked for conformity to that standard as a

further. safeguard.. Details of conditions under which a liccncc for the tisc of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

10. SAMPLING

10.1 Samples each weighing 0.5 kg shall be taken from top, centre and bottom of at least five containers for .every tonne of material. These samples shall be combined, mixed and quartered to obtain a 2.5 kg laboratory sample from which 100 g samples shall be taken for testing purposes. Three 100 g samples shall be required for testing, one for carbon content, one for shape and size and one for the hardness of the material. A sample splitter -may be used to reduce the gross sample to the desired weight.

11. RETEST

11.1 If the sample selected fails to meet the requirements given under 4, 5, 6 and 7, two further samples shall be selected for each retest. Should the two retests satisfy the requirements of this standard, the lot shall -be accepted. Should either of the samples fail, the material shall be taken as not complying with the requirements of this material.

7

,‘

Is : 4683 - 1968

APPENDIX A

( Note in Tables 1 and 2 )

COMPARATIVE SIEVE DESIGNATIONS OF IS, BS AND ASTM SIEVES

IS Sieve

4075-mm

4*00-mm

3:35-mm

2.80-mm

2*36-mm

2*00-mm

l-70-mm

i *40-mm

1*18-mm

1 *OO-mm

850.micron

7 1 0-tiicrofa

600-micron

500-micron

425-micron

355~micron

300-micron

180-micron

90-micron

BS Sievs .

-

5

6

7 .

8

10

12 l

14

16

18

22

25

30

36

44

52

85

170

US Standard Sieve ( ASTM SieDe )

4.76 mm (4)

4*CO mm (5)

3.36 mm (6)

2.83 mm (7)

2.38 mm (8)

2fIO mm (10)

1.63 mm (12)

1.4-l mm (14)

l-19 mm (16)

03 1.00 mm (18) ?[a,

841 (r (20)

707 p. (25)

595 [L (30)

500 p (35)

420 p (40)

354 II (45) L

297 I* (50)

177 p (80)

88 y (170)

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