supply of different type ring hammer for uprvunl thermal power plants , toothed ring hammer for secondary crusher chemical composition – manganese steel grade -iv, composition as per is: 276/1978 c = 0.7% to 1.3% mn = 11.5% to 14% ni = 3% to 5% s = 0.96% max. p = 0.09% max. si = 1% max. technical specification – id = 240 mm, od = 354 mm max., no. of teeth = 8 no., width of teeth = 60 mm, width of hammer = 102 mm, weight = 30kg (± 0.5 kg) after casting and heat treatment hardness = 229 bhn teeth elevation = 25 mm tolerance: is 4897 class – ii dimension as per drawing/sample , ring hammer of manganese steel confirming to ls 276/1978 grade- iv having following composition: carbon: 0.7 to 1.3% manganese: 11.5 to 14%, silicon: 01% max. sulphur: 0.06% max., phosphorous: 0.09%, nickel: 03 to 05%, weight of each hammer: 20 kg (±0.5 kg), width of hammer should not exceed 100 mm in any case, material hardness: 229 bhn max. (1 set= 76 no.) other dimension as per drawing/sample. , ring hammer toothed: size-140x226x330, material- cast mn steel (is 276, gr iii), weight- 39.5kg, as per drawing/sample , crusher hammer (is-276/1978) for russian crusher for chd-ii, btps material:manganese steel (duly heat treated) 1 set=99 nos. finish weight of each hammer: 61 kg (±100 gm.), hardness: 210 to 229 bhn tolerance as per is- 4897 class-ii other dimension as per drawing/sample. , plane ring hammer for elecon make crusher 1 set=26 nos. material: manganese steel (mn-11.5 -14%) weight: 45 kg. approx. each hammer grade-iv, is: 276-1978 id-210 mm., od-310 mm., hight/depth-140 mm. dimension as per drawing/sample , tooth ring hammer for elecon make crusher 1set=28 nos. material: manganese steel (mn-11.5 -14%) weight: 33 kg. approx. each hammer grade-iv, is: 276-1978 id-210 mm., od-310 mm., hight/depth-140 mm. head type 25, curvature angle-48 degree teeth top portion width- 25 mm. dimension as per drawing/sample , tooth ring hammer for tsl make crusher 1set=76 nos. model no.- rg 1228 material: manganese steel (mn-11.5 -14%) weight: 24 kg. approx. each hammer grade-iv, is: 276-1978 id-182 mm., od-282 mm., hight/depth-98 mm. top/bottom thickness- 60/38) dimension as per drawing/sample , ring hammer for coal crusher specification: - no of teeth= 06 weight of each hammer= 19kg to 19.5kg outer diameter1= 270mm outer diameter2= 241mm internal diameter= 174mm elecon drg.no. m07195/2 material:austenitic manganese steel grade-iv as per is 276-78 hardness= 229 bhn max note:- each set having 55 nos. of hammers. dimension as per drawing/sample , ring hammer for coal crusher for 2x110 mw specification: - no of teeth=08 weight of each hammer=19 kg to 19.5 kg outer diameter 1=245mm outer diameter 2=223mm internal diameter =155mm material:austenitic manganese steel grade-iv as per is 276-78 hardness= 229 bhn max note:- each set having 55 nos. of hammers. dimension as per drawing/sample , toothed ring hammer:material composition: manganese steel grade-iv, composition as per is-276/1978, c: 0.7% to 1.3%, mn: 11.5% to 14%, si: 1% maximum, p: 0.9% maximum, s: 0.096% maximum, ni: 3 to 5%dimension: - id: 175 mm. od (including tooth): 265 mm. od (excluding tooth): 240 mm. width of tooth: 50mm. width of the hammer: 100 mm. no of teeth: 08 nos equidistance:50mm teeth elevation: 12 mm physical properties: hardness of hammer = 280 bhn maximum finished weight of each hammer after casting & heat treatment = 20 kg to 20.5 kg tolerance = is 4897 class ii, material: austenitic manganese steel grade-vii (as per is276) 1 set= 76 nos. of hammers (dimension as per drawing/sample) , coal crusher hammer as per drawing duly forged hard faced by borc electrodes 4 mm or equivalent electrodes for coal handling plant of c tps, htps. material: en-8 forged steel, ultrasonic tested technical specification: (a) finished weight of coal hammer 63 kg ± 100 gms. (b) three faces of hammer to be provided 6 mm thick hard coating with borc electrodes. (c) hardness of hard-faced surface should be 450 bhn to 500 bhn.(d) before hard facing bhn should be 200 to 320.note- each set consist of 70 nos. hammers. (as per drawing and sample) , toothed ring hammer of cast mn steel grade- iii conforming to is-276 (latest amendments) unit weight: 20 kg (±2%) dimension (in mm): - id: 178 mm od (including tooth): 265 mm od (excluding tooth): 240 mm width of tooth: 50 mm width of the hammer: 99±1 mm no of teeth: 08 nos. equidistance at 50mm chemical composition: - carbon: 1.05 to 1.35% manganese: 11.5 to 14%, silicon: 01% max. sulphur: 0.025% max., phosphorous: 0.08%, chromium: 1.5 to 2.5%, physical properties: hardness of hammer = 180 – 229 bhn (max) finished weight of each hammer each casting & heat treatment = 20 kg to 20.4 kg tolerance = is 4897 class ii (1set= 76 nos.) (as per drawing and sample) note: addition of extra weight by welding or otherwise with parent metals to maintain required hammers weight is not permissible in any case. , toothed ring hammer of cast mn steel grade-iii conforming to is-276-1978 (latest amendments) unit weight: 30 kg (±01 kg.) chemical composition: - carbon: 1.05 to 1.35% manganese: 11.5 to 14%, silicon: 01% max. sulphur: 0.025% max., phosphorous: 0.08%, chromium: 1.5 to 2.5%, technical specification:weight of each hammer: 30kg (±01 kg.) id:230 mm, step dia: 290 mm, od: 333mm (max.), width of the teeth: 75 mm, width of hammer: 105 mm, no. of teeth: 08 nos. teeth elevation: square type (90 deg) physical properties: tolerance: is-4897 class-ii weight variation: (±01 kg.) manganese to carbon ratio: 10:1 hardness: 180 bhn to 229 bhn hammer should be free foundry defect. weight of each hammer is to be written on each hammer. note: addition of extra weight by welding or otherwise with parent metals to maintain required hammers weight is not permissible in any case. (dimension as per drawing/sample)