brake r cores

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R T I F I Z I E R T

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QUALITÄTSMANAGEMENTSYST

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D I N I S O 9 0 0 1

Certified according to DIN ISO 9001

Foseco GmbH, 46322 Borken, Germany · Hausanschrift/Works Location: Gelsenkirchener Str.10,46325 Borken (Westfalen) · Telefon 02861/83-0 · Telefax 02861/83-338 · www.foseco.de

Data Sheet IE 6.60 Product Data Sheet • Feeding MaterialsEdition 11/01

Breaker CoresApplication and properties Breaker cores for the reduction of the feeder-to-casting contact area enable feeders to be

broken off or knocked off from many types of castings. In the case of very tough casting al-loys where it is not possible to simply break off or knock off the feeder, the advantage ofusing breaker cores lies in the reduction of fettling and grinding costs for the removal of thefeeder.

Besides the conventional types of breaker cores based on silica sand (Croning) andchromite sand, special breaker cores with a very small aperture are also in use in repetitioniron foundries. These special breaker cores as shown in Table 3 are made from highly re-fractory ceramic.

Practical application Breaker core material Casting metal Feeder diameter (mm)

Silica sand Steel 35 - 120

Silica sand Grey iron, s.g. iron, 35 - 300non-ferrous metals

Ceramic Grey iron, s.g. iron, 40 - 120non-ferrous metals

Chromite sand Steel 80 - 500

Chromite sand Grey iron, s.g. iron 200 - 500

Experience has shown that at least 70 % of the breaker core area should be in contact withthe casting, in order to level out the temperatures of the metal and the breaker core from thesuperheat upon or before reaching liquidus.

Tables’ contents Table 1: Standard breaker cores for parallel-conical insert feeder sleeves(steel casting)

Table 2: Standard breaker cores for parallel-conical insert feeder sleeves(iron casting)

Table 3: Ceramic breaker cores for parallel-conical insert feeder sleeves(iron casting)

Table 4: Standard neck-down breaker cores for parallel-conical feeder sleeves(steel casting, and iron casting)

Table 5: Standard breaker cores for cylindrical opposite-conical feeder sleeves(steel casting and iron casting)

Table 6: Standard breaker cores for oval opposite-conical feeder sleeves(steel casting and iron casting)

Table 7: Standard breaker cores for KALMINEX and KALMIN cylindrical feedersleeves (steel casting and iron casting)

Table 8: Standard breaker cores for KALMINEX and KALMIN oval feeder sleeves(steel casting and iron casting)

Standard breaker cores of silica sand or chromite sand for parallel-conical insert feeder sleeves (steel casting)

Types Dimensions (mm)D1 D2 d1 d2 d3 T t N F* (cm2)

BK 3,5/5E/11 47,0 48,0 27,0 35,0 – 9,0 6,0 15,0 1,8BK 3,5/5/11 55,0 56,0 28,0 34,0 – 9,0 6,0 15,0 1,8BK 4/5/11 61,5 62,5 34,5 40,5 – 11,0 8,0 25,0 4,9BK 4/7E/11 61,5 62,5 34,5 40,5 – 11,0 8,0 25,0 4,9BK 4/7/11 65,5 66,5 34,5 40,5 41,5 11,0 8,0 25,0 4,9Bk 4/95/11 65,5 66,5 34,5 42,0 43,0 11,0 8,0 25,0 4,9BK 5/8/11 75,7 76,7 45,0 51,0 52,0 11,0 8,0 30,0 7,0BK 6/9/11 83,0 84,0 49,0 57,0 58,0 11,0 8,0 30,0 7,0BK 6/12/11 83,0 84,0 46,0 57,0 58,0 11,0 8,0 30,0 7,0BK 7/10/11 97,0 98,0 60,5 68,5 69,5 13,0 9,0 35,0 9,6BK 8/11/11 106,5 107,5 70,5 79,0 – 13,0 9,5 40,0 12,6BK 9/12/11 119,0 120,0 77,5 87,5 88,5 13,0 10,0 45,0 15,9BK 10/13/11 131,0 132,0 83,0 96,5 – 13,0 11,0 50,0 19,6BK 12/15/11 158,5 159,5 106,0 116,0 118,0 15,0 12,0 60,0 28,3

Table 1 of Foseco Data Sheet IE 6.60

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 12/15/11 QBreaker cores of chromite sand : e.g. BK 12/15/11 CrFeeder sleeves with attached breaker core: see data sheets on Insert Feeder Sleeves.

Table 2 of Foseco Data Sheet IE 6.60

Standard breaker cores of silica sand for parallel-conical insert feeder sleeves (iron casting)

Types Dimensions (mm)D1 D2 d1 d2 d3 T t N F* (cm2)

BK 4/7/14 65,5 66,5 34,5 40,5 41,5 11,0 8,0 20,0 3,1BK 4/95/14 65,5 66,5 34,5 42,0 43,0 11,0 8,0 20,0 3,1BK 5/8/14 75,7 76,7 45,0 51,0 52,0 11,0 8,0 22,5 4,0BK 6/9/14 83,0 84,0 49,0 57,0 58,0 11,0 8,0 25,0 4,9BK 6/12/14 83,0 84,0 46,0 57,0 58,0 11,0 8,0 25,0 4,9BK 7/10/14 97,0 98,0 60,5 68,5 69,5 13,0 9,0 27,5 5,9BK 8/11/14 106,5 107,5 70,5 79,0 – 13,0 9,5 30,0 7,1BK 9/12/14 119,0 120,0 77,5 87,5 88,5 13,0 10,0 32,5 8,3BK 10/13/14 131,0 132,0 83,0 96,5 – 13,0 11,0 35,0 9,6BK 12/15/14 158,5 159,5 106,0 116,0 118,5 15,0 12,0 40,0 12,6

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 12/15/14 QFeeder sleeves with attached breaker core: see data sheets on Insert Feeder Sleeves.

Table 3 of FOSECO Data Sheet IE 6.60

Ceramic breaker cores for parallel-conical insert feeder sleeves (iron casting)

Types Dimensions (mm)D1 D2 d2 T a N1 N2 F* (cm2)

BK 4/7/11 K 65,5 66,5 40,5 6,0 1,0 12,0 14,0 1,1BK 4/95/11 K 65,5 66,5 40,5 6,0 1,0 12,0 14,0 1,1BK 5/8/11 K 75,7 76,7 51,0 6,0 1,0 14,0 16,0 1,5BK 6/9/11 K 83,0 84,0 57,0 6,0 1,0 16,0 18,0 2,0BK 6/12/11 K 83,0 84,0 57,0 6,0 1,0 16,0 18,0 2,0BK 7/10/11 K 97,0 98,0 68,5 7,0 1,5 18,0 20,0 2,5BK 8/11/11 K 106,5 107,5 78,0 7,5 1,5 20,0 22,0 3,1BK 9/12/11 K 119,0 120,0 86,0 8,0 2,0 22,0 24,0 3,8BK 10/13/11 K 131,0 132,0 95,0 8,0 2,0 24,0 26,0 4,5BK 12/15/11 K 158,5 159,5 116,0 9,0 2,0 26,0 28,0 5,3

In your orders please use the following codes: *F = Feeder fracture areaCeramic breaker cores : e.g. BK 12/15/11 KFeeder sleeves with attached breaker core: see data sheets on Insert Feeder Sleeves.


Standard neck-down breaker cores of silica sand or chromite sand for parallel-conical feeder sleeves

Types Dimensions (mm)D1 D2 d1 T a N F* (cm2)

BK 3,5/5E/31 – – – – – – –BK 3,5/5/31 53,0 37,0 32,0 15,0 3,0 20,0 3,1BK 4/5/31 58,0 43,0 38,0 15,0 4,0 25,0 4,9BK 4/7E/31 58,0 43,0 38,0 15,0 4,0 25,0 4,9BK 4/7/31 62,0 47,0 38,0 15,0 4,0 25,0 4,9BK 4/95/31 62,0 47,0 38,0 15,0 4,0 25,0 4,9BK 5/8/31 73,0 53,0 50,0 20,0 4,0 30,0 7,1BK 6/9/31 79,0 56,0 54,0 22,0 4,0 33,0 8,5BK 6/12/31 79,0 56,0 54,0 22,0 4,0 33,0 8,5BK 7/10/31 93,0 70,0 64,0 25,0 4,0 35,0 9,6BK 8/11/31 102,0 71,0 68,0 30,0 4,0 38,0 11,3BK 9/12/31 115,0 79,0 80,0 35,0 4,0 40,0 12,6BK 10/13/31 126,0 85,0 90,0 40,0 4,5 45,0 15,9BK 12/15/31 153,0 105,0 100,0 45,0 5,0 50,0 19,6

In your orders please use the following codes: *F = Feeder fracture areaNeck-down breaker cores of silica sand : e.g. BK 12/15/31 QNeck-down breaker cores of chromite sand : e.g. BK 12/15/31 CrFeeder sleeves with attached breaker core: see data sheets on parallel-conical Feeder Sleeves.


Standard breaker cores of silica sand or chromite sand for cylindrical opposite-conical feeder sleeves

Types Dimensions (mm)D d N T F* (cm2)

BK 4/7/10 57 55 30 7 7,0BK 4/95/10 57 55 30 7 7,0BK 5/8/10 66 64 30 8 7,0BK 6/9/10 76 73 30 8 7,0BK 7/10/10 88 85 35 8 9,6BK 8/11/10 100 97 40 10 12,6BK 9/12/10 108 105 45 10 15,9BK 10/13/10 120 117 50 10 19,6

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 10/13/10 QBreaker cores of chromite sand : e.g. BK 10/13/10 CrFeeder sleeves with attached breaker core: see data sheets on opposite-conical Feeder Sleeves.


Standard breaker cores of silica sand or chromite sand for oval opposite-conical feeder sleeves

Types Dimensions (mm)A B a b C D T F* (cm2)

BK 5/8/20 67 92 25 50 64 88 8 11,1BK 6/9/20 80 109 28 56 76 106 8 14,0BK 7/10/20 91 127 31 62 88 124 10 17,1BK 8/11/20 102 144 35 70 98 141 10 21,9

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 8/11/20 QBreaker cores of chromite sand : e.g. BK 8/11/20 CrFeeder sleeves with attached breaker core: see data sheets on oval opposite-conical Feeder Sleeves.


Standard breaker cores of silica sand or chromite sand for KALMINEX and KALMIN cylindrical feeder sleeves

Types Dimensions (mm)D d N T F* {cm2}

BK 2/1 88 85 35 8 9,6BK 3/1 108 105 43 10 14,5BK 4/1 134 127 50 10 19,6BK 5/1 156 149 60 12 28,3BK 6/1 178 171 68 14 36,3BK 7/1 202 192 78 14 47,8BK 8/1 224 214 85 16 56,8BK 9/1 246 236 90 16 63,6BK 9,5/1 271 261 100 16 78,5BK 10/1 300 290 110 16 95,0BK 10,5/1 326 316 125 18 122,7BK 11/1 356 346 135 20 143,1BK 12/1 410 400 150 20 176,7BK 13/1 460 450 165 25 213,8BK 14/1 515 505 180 30 254,5BK 15/1 565 550 250 40 490,9

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 5/1 QBreaker cores of chromite sand : e.g. BK 5/1 CrFeeder sleeves with attached breaker core: see data sheets on cylindrical Feeder Sleeves.


Standard breaker cores of silica sand or chromite sand for KALMINEX and KALMIN oval feeder sleeves with a ratio of diameters = 1 : 2

Types Dimensions (mm)B A b a T F* (cm2)

BK 3/2 155 80 90 25 8 21,1BK 4/2 175 90 100 35 8 32,3BK 5/2 200 120 112 32 14 33,6BK 6/2 240 140 140 40 14 52,5BK 7/2 284 164 168 48 14 75,7BK 8/2 328 188 196 56 16 103,0BK 9/2 372 212 224 64 16 134,5BK 10/2 416 236 252 72 16 170,3BK 11/2 460 260 280 80 20 210,2

In your orders please use the following codes: *F = Feeder fracture areaBreaker cores of silica sand : e.g. BK 11/2 QBreaker cores of chromite sand : e.g. BK 11/2 CrFeeder sleeves with attached breaker core: see data sheets on KALMINEX and KALMIN oval Feeder Sleeves.

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