SU924146A1 - Cast iron composition - Google Patents

Description

<p> The invention relates to metallurgy - </ p> </ td> <td> <p> </ p> </ td> <td> <p> Manganese </ p> </ td> <td> <p> 0.2-0.45 </ p> </ td> </ tr> <tr> <td> <p> hyi, more specifically to </ p> </ td> <td> <p> exploration high - </ p> </ td> <td> <p> </ p> </ td> <td> <p> Nickel </ p> </ td> <td> <p> 0.5-1.5 </ p> </ td> </ tr> <tr> <td> <p> strong cast iron. </ p> </ td> <td> <p> </ p> </ td> <td> <p> </ p> </ td> <td> <p> Chrome </ p> </ td> <td> <p> 0.02-0.065 </ p> </ td> </ tr> <tr> <td> <p> Cast Iron Known </ p> </ td> <td> <p> th next chi - </ p> </ td> <td> <p> </ p> </ td> <td> <p> Copper </ p> </ td> <td> <p> 1-1.5 </ p> </ td> </ tr> <tr> <td> <p> composition </ p> </ td> <td> <p> wt.%: </ p> </ td> <td> <p> </ p> </ td> <td> <p> Calcium </ p> </ td> <td> <p> 0.005-0.15 </ p> </ td> </ tr> <tr> <td> <p> Carbon </ p> </ td> <td> <p> 2.6-4.5 </ p> </ td> <td> <p> 5 </ p> </ td> <td> <p> Magnesium </ p> </ td> <td> <p> 0.02-0.08 </ p> </ td> </ tr> <tr> <td> <p> Silicon </ p> </ td> <td> <p> 1-4 </ p> </ td> <td> <p> </ p> </ td> <td> <p> Rare Earth - </ p> </ td> <td> <p> </ p> </ td> </ tr> <tr> <td> <p> Manganese </ p> </ td> <td> <p> 0.1-1.2 </ p> </ td> <td> <p> </ p> </ td> <td> <p> metal </ p> </ td> <td> <p> 0.001-0.1 </ p> </ td> </ tr> <tr> <td> <p> Nickel </ p> </ td> <td> <p> 0.01-1, 0 </ p> </ td> <td> <p> </ p> </ td> <td> <p> Molybdenum </ p> </ td> <td> <p> 0.2-0.5 </ p> </ td> </ tr> <tr> <td> <p> Chrome </ p> </ td> <td> <p> 0.01-0.5 </ p> </ td> <td> <p> </ p> </ td> <td> <p> Tin </ p> </ td> <td> <p> 0.035-0.25 </ p> </ td> </ tr> <tr> <td> <p> Copper </ p> </ td> <td> <p> 0.01-1.0 </ p> </ td> <td> <p> 10 </ p> </ td> <td> <p> Bor </ p> </ td> <td> <p> 0.001-0.1 </ p> </ td> </ tr> <tr> <td> <p> Calcium </ p> </ td> <td> <p> 0.015-0.06 </ p> </ td> <td> <p> </ p> </ td> <td> <p> Iron </ p> </ td> <td> <p> Else </ p> </ td> </ tr> <tr> <td> <p> Magnesium </ p> </ td> <td> <p> 0.015-0.1 </ p> </ td> <td> <p> </ p> </ td> <td colspan = "2"> <p> However, the famous cast-iron nedos - </ p> </ td> </ tr> <tr> <td> <p> Rare Earth - </ p> </ td> <td> <p> </ p> </ td> <td> <p> </ p> </ td> <td> <p> high enough </ p> </ td> <td> <p> wear resistance and </ p> </ td> </ tr> <tr> <td> <p> metal </ p> </ td> <td> <p> 0.005-0.15. </ p> </ td> <td> <p> • s </ p> </ td> <td colspan = "2"> <p> bully resistance. </ p> </ td> </ tr> <tr> <td> <p> Aluminum </ p> </ td> <td> <p> 0.05-0.4 </ p> </ td> <td> <p> 15 </ p> </ td> <td colspan = "2"> <p> The purpose of the invention is to raise from - </ p> </ td> </ tr> <tr> <td> <p> Iron </ p> </ td> <td> <p> Else </ p> </ td> <td> <p> </ p> </ td> <td> <p> wear resistance and </ p> </ td> <td> <p> resistance for - </ p> </ td> </ tr> <tr> <td colspan = "2"> <p> The closest technical </ p> </ td> <td> <p> </ p> </ td> <td> <p> Dire. </ p> </ td> <td> <p> </ p> </ td> </ tr> <tr> <td colspan = "2"> <p> entities and achievable results </ p> </ td> <td> <p> </ p> </ td> <td> <p> Delivered </ p> </ td> <td> <p> goal is achieved </ p> </ td> </ tr> <tr> <td colspan = "2"> <p> to the proposed is cast iron £ 2] </ p> </ td> <td> <p> 20 </ p> </ td> <td> <p> that cast iron, </ p> </ td> <td> <p> containing carbon, </ p> </ td> </ tr> <tr> <td colspan = "2"> <p> of the following chemical composition, </ p> </ td> <td> <p> </ p> </ td> <td colspan = "2"> <p> silicon, manganese, nickel, chromium, </ p> </ td> </ tr> <tr> <td> <p> weight </ p> </ td> <td> <p> &gt; </ p> </ td> <td> <p> </ p> </ td> <td colspan = "2"> <p> copper, calcium, magnesium, rare earth - </ p> </ td> </ tr> <tr> <td> <p> Carbon </ p> </ td> <td> <p> 3-3,8 </ p> </ td> <td> <p> </ p> </ td> <td colspan = "2"> <p> nano-metals, molybdenum, tin and jellies </ p> </ td> </ tr> <tr> <td> <p> Silicon </ p> </ td> <td> <p> 2.4-3.2 </ p> </ td> <td> <p> </ p> </ td> <td colspan = "2"> <p> zo, additionally contains aluminum </ p> </ td> </ tr> </ table> <p> 3 Э24146 4 </ p> <p> and vanadium in the following ratio of components; wt.%, </ p> <p> Carbon Silicon Manganese Nickel Chromium Copper Calcium Magnesium Rare-Earth Metals Molybdenum Tin Aluminum Vanadium Iron </ p> <p> 3.3-3.8 </ p> <p> 1.3- 2.5 0.5-1.0 0.6-1.2 0.1-0.3 0.3-1.2 </ p> <p> 0.01-0.08 </ p> <p> 0.01-0.035 </ p> <p> 15 </ p> <p> 0.01-0.1 0.1-0.3 </ p> <p> 0.04-0.12 0.05-0 L 0.08-0.5 Else </ p> <p> Cast iron may contain sulfur up to 0.03 and phosphorus up to 0.18 wt.% as impurities. </ p> <p> Cast iron is smelted in an ICT-2.5 induction furnace. · Pig iron, scrap steel and cast iron, ferroalloys, including ferrovanadium f # a, are used as charge materials. 35V (TU-14-5-98-78) and FM1 ferromolybdenum (according to GOST 4759-69). Additives, granulated nickel (GOST 849-70), copper (GOST 859 ~ 66), technically pure aluminum (GOST 11069-74), tin (GOST <sub> 30 </ sub> 860-75), magnesium, is injected into cast iron in the form of a known ligature containing,%: magnesium 14, nickel 42, copper 33, iron else, REM. (cerium mischmetall MTs-40 according to TU Giredmet 48-4-280-73), calcium in the form, silicocalcium <sup>; </ sup> (GOST 4762-71). </ p> <p> Cast iron and scrap are melted, adjusted to chemical composition with ferroalloys and additives, overheated to 15201540 ° С and aluminum is introduced. Upon subsequent cooling of the metal to the temperature of release, vanadium and tin are introduced into the crucible, the melt is stirred. Release into the bottling bucket produced at 1410-1430 ° C. Magnesium ligature RZM and silicocalcium injected before release to the bottom of the heated ladle. In </ p> <p> 20 </ p> <p> 25 </ p> <p> 35 </ p> <p> 40 </ p> <p> 45 </ p> <p> a series of heats, where the effects of vanadium, molybdenum and tin are investigated, various amounts of the component under study are also injected into the bottom of the ladle. Graphitizing modification of cast iron is carried out by FS-75 ferrosilicon in a ladle and runner bowl in the amount of 0.6% by weight of the metal. </ P> <p> At 1320-1340 ° C, the melt is poured from the ladle into the oil form. (complex blanks) piston rings. Castings are subjected to tempering to relieve residual stresses and stabilize the structure at 580-600 <sup> s </ sup> C for 6 hours. Samples for studying the chemical composition, structure and properties of cast iron are cut directly from the body of the castings. The presence of vanadium in the cast iron contributes to the formation of fine vanadium carbides in the castings. Already with a vanadium content of 0.08%, an increase in strength and wear resistance is observed, and this effect is enhanced up to a vanadium content of up to 0.5 wt.%. A further increase in the content of vanadium enhances its whitening effect, a metastable (carbide) eutectic is formed in the iron and the properties of the iron deteriorate sharply. </ P> <p> Aluminum is an active graphitizer that reduces the iron's tendency to bleach. The introduction of 0.05-0.4 wt.% Aluminum allows you to have a lower silicon content with a corresponding gain in strength and ductility. The effect of the positive effect of aluminum appears already when its content is 0.05%, θ above 0.4%, casting properties of cast iron deteriorate, casting rejection increases on captives and slag shells, the technology for producing cast iron and castings is complicated. </ P> <p> In table. 1 shows the chemical composition of the proposed cast iron, in table 2 <sub>? </ sub> its mechanical properties. </ p> <p> 5 92411 (6 6 </ p> <p> 7 </ p> <p> 924146 </ p> <p> 8 </ p> <p> Table? </ p> <table border = "1"> <tr> <td rowspan = "3"> one Composition </ td> <td rowspan = "3"> Wear, mg / $ 100 k </ td> <td colspan = "2" rowspan = "2"> Resistance - Limit of singing by the yayar - </ td> <td rowspan = "3"> Relation μι those my | lengthening 'to me,% ί k .....] </ td> <td rowspan = "3"> Hardness, kgf / mm <sup> 1 </ sup> </ td> <td colspan = "2"> Structure Indicators </ td> </ tr> <tr> <td rowspan = "2"> Prevailing form of graphite </ td> <td rowspan = "2"> The amount of structural-free ferrite </ td> </ tr> <tr> <td> dir, <sub> 4 </ sub> kgf / cm </ td> <td> tensile strength, kgf / mm </ td> </ tr> <tr> <td> Prev * lag </ td> <td> </ td> <td> </ td> <td> "·. </ Td> <td> </ td> <td> </ td> <td> </ td> <td> </ td> </ tr> <tr> <td> 1 </ td> <td> 44.9 </ td> <td> 183 </ td> <td> 50.1 </ td> <td> 1.7 </ td> <td> 248 </ td> <td> Vermkkulyarnvya </ td> <td> No </ td> </ tr> <tr> <td> 2 </ td> <td> 40.6 </ td> <td> 200 </ td> <td> 53.7 </ td> <td> 2.0 </ td> <td> 255 </ td> <td> Same </ td> <td> - ♦ 1 - </ td> </ tr> <tr> <td> 3 </ td> <td> 36.2 </ td> <td> 21 "</ td> <td> 57.3 </ td> <td> 2.3 </ td> <td> 269 </ td> <td> </ td> <td> -N. </ Td> </ tr> <tr> <td> 4 </ td> <td> 41.5 </ td> <td> 192 </ td> <td> 50.8 </ td> <td> 1.8 </ td> <td> 248 </ td> <td> </ td> <td> </ td> </ tr> <tr> <td> 5 </ td> <td> 39.8 </ td> <td> , 98 </ td> <td> 54.1 </ td> <td> 2.1 </ td> <td> 2I </ td> <td> • ““ Well. </ Td> <td> "Ιΐ - </ td> </ tr> <tr> <td> 6 </ td> <td> 37.3 </ td> <td> 209 <sub> 4 </ sub> </ td> <td> 59.7 </ td> <td> 2.5 </ td> <td> 255 </ td> <td> ·· ** </ td> <td> -11 - </ td> </ tr> <tr> <td> 7. </ Td> <td> 45.5. </ Td> <td> "94 </ td> <td> 56.7 </ td> <td> 2.1 </ td> <td> 248 </ td> <td> </ td> <td> „And - </ td> </ tr> <tr> <td> 8 </ td> <td> 40.7 </ td> <td> 208 </ td> <td> 56.2 </ td> <td> 2.3 </ td> <td> 252 </ td> <td> </ td> <td> </ td> </ tr> <tr> <td> 9 </ td> <td> 39.3 </ td> <td> 2.6 </ td> <td> 57.0 </ td> <td> 2.3 </ td> <td> 257 </ td> <td> -N. </ Td> <td> -II -, </ td> </ tr> <tr> <td> 10 </ td> <td> 39.8 </ td> <td> 201 </ td> <td> 55.2 </ td> <td> </ td> <td> 255 </ td> <td> -And - </ td> <td> -II - </ td> </ tr> <tr> <td> 11 </ td> <td> 36.4 </ td> <td> 2.6 </ td> <td> 58.0 </ td> <td> 2.3 </ td> <td> 269 </ td> <td> • -N - </ td> <td> . -And - </ td> </ tr> <tr> <td> 12 </ td> <td> 39.0 </ td> <td> 204. </ Td> <td> 52.4 </ td> <td> 2.1 </ td> <td> 252 </ td> <td> </ td> <td> -11 - </ td> </ tr> <tr> <td> 13 </ td> <td> 41.1 </ td> <td> "97 </ td> <td> $ 5.8 </ td> <td> 2.2 </ td> <td> 250 </ td> <td> -II - </ td> <td> -11 - </ td> </ tr> <tr> <td> "4 </ td> <td> 39.5 </ td> <td> 205 </ td> <td> 54.0 </ td> <td> 2.1 </ td> <td> 252 </ td> <td> . h. </ td> <td> -II - </ td> </ tr> <tr> <td> "5 </ td> <td> 39.8 </ td> <td> 200 </ td> <td> 56.5 </ td> <td> 2.2 </ td> <td> 262 </ td> <td> - ·· - </ td> <td> -II - </ td> </ tr> <tr> <td> CaveAll </ td> <td> 71.0 </ td> <td> 119 </ td> <td> 60.6 </ td> <td> 1.9 </ td> <td> 285 </ td> <td> Vovid - </ td> <td> 15 </ td> </ tr> </ table> <p> cash </ p> <p> As can be seen from the data table. 2, the proposed cast iron has an optimal microstructure (vermicular graphite and a matrix without structural-free ferrite) wear resistance and tearing resistance is significantly higher than that known. </ P> <p> In comparison with cast billet. Piston rings made of base cast iron according to technical conditions D100 04-1TU and TU32TST631-74, <sup> 50 </ sup>, billet piston rings of the proposed cast iron have a higher wear resistance and resistance to bully. Due to this, the operational durability of the piston rings <sup> 55 </ sup> will increase by about 26%, </ p> <p> The annual economic effect from the introduction of the proposed iron for </ p> <p> manufacture of castings of piston rings of diesel engines D100, used in railway transport, will be 770976 rubles ·. </ p>

Claims (1)

<claim-text> Formula of Invention </ claim-text> <claim-text> Cast iron containing carbon, silicon, manganese, nickel, chromium, copper, calcium, magnesium, rare earth metals, molybdenum, tin, and iron, due to the fact that, in order to increase wear resistance and tearing resistance, it will add It contains aluminum and vanadium in the following ratio of components;, in, wt.% ·. </ claim-text> <claim-text> Carbon 3.3 3.3 </ claim-text> <claim-text> Silicon 1. Ϊ -?. <Sup> r </ sup>, </ claim-text> <table border = "1"> <tr> <td colspan = "2"> <claim-text> 9 </ claim-text> </ td> <td> <claim-text> 924146 </ claim-text> </ td> <td colspan = "2"> <claim-text> 10 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Manganese </ claim-text> </ td> <td> <claim-text> 0.5-1.0 </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> <td> <claim-text> Aluminum </ claim-text> </ td> <td> <claim-text> 0.05-0.4 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Nickel </ claim-text> </ td> <td> <claim-text> 0.6-1.2 </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> <td> <claim-text> Vanadium </ claim-text> </ td> <td> <claim-text> 0.08-0.5 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Chrome </ claim-text> </ td> <td> <claim-text> 0.1-0.3 </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> <td> <claim-text>! Hele so </ claim-text> </ td> <td> <claim-text> Else. </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Copper </ claim-text> </ td> <td> <claim-text> 0.3-1.2 </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> <td> <claim-text> </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Calcium </ claim-text> </ td> <td> <claim-text> 0.01-0.08 </ claim-text> </ td> <td> <claim-text> 5 </ claim-text> </ td> <td colspan = "2">