CN101173343A - High-strength abrasion-proof cast steel lining board and manufacturing method thereof - Google Patents
High-strength abrasion-proof cast steel lining board and manufacturing method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 229910001208 Crucible steel Inorganic materials 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 8
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 229910052788 barium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 150000002910 rare earth metals Chemical class 0.000 claims description 7
- 238000005496 tempering Methods 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 5
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 229910000617 Mangalloy Inorganic materials 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 8
- 239000011572 manganese Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 239000004615 ingredient Substances 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910001037 White iron Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- -1 electric power Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a lining plate of cast steel with high strength and abrasion resistance and the fabrication method, belonging to the technical field of metal abrasion-resistant material. The chemical composition of the lining plate (in weight ratio) is that: 0.25 to 0.45 C, 1.0 to 2.0 Mn, 0.8 to 1.5 Cr, 0.003 to 0.008 B, 0.02 to 0.08 Al, 0.04 to 0.15 Ti, 0.02 to 0.10 La, 0.02 to 0.10 Ce, 0.02 to 0.08 Ba, 0.02 to 0.10 Ca and Fe and other inevitable micro impurity retaining; wherein, the sum of Si, Mn and Cr is more than 3.5 and lower than 4.5, while the sum of the La and Ce is more than 0.05 and lower than 0.18. The lining plate of cast steel can be fabricated with an electric stove and a method of sand sell molding. Therefore, the tensile strength of the lining plate is as high as to 1450 to 1600 MPa, the hardness reaches to 50 to 55 HRC; the abrasion resistance is good; and the impact toughness reaches 65 to 80 J/cm2. The lining plate can neither fracture nor peel in use, with much better service performance than the Mn13 high manganese steel lining plate. With the steel cuttings adopted as the main materials, the lining plate has the advantages of simple fabricating technique, low manufacturing cost, and can improve the operating efficiency of ball mill and lower the material-grinding cost, therefore is possessed with good economic benefit.
Description
Technical field
The present invention is a kind of high-strength abrasion-proof cast steel lining board and manufacture method thereof, belongs to technical field of metal wear.
Background technology
Industries such as metallurgical mine, cement building material, electric power, chemical fertilizer, coal, chemical industry are extensive use of the ball mill grinding material, and wherein liner plate is the main expendable part in the ball mill, and its quality had both influenced the grinding machine production operational availability, also ectocrine abrasive lapping cost.Lining board of grinder material commonly used mainly contains two big classes, one class is a Hadfield Steel, its toughness height, original hardness is low, and the work hardening of main dependence austenite improves its hardness in the use, after abundant work hardening, its hardness is brought up to HB400-500 by original HB200, and use obtains good result of use under the high impact loads condition, but uses under medium and small shock load condition, fully work hardening of austenite, it wears no resistance.Another kind of is alloy white cast iron, its hardness height, and toughness is low, and result of use is good under no shock load, but is prone to cracked phenomenon having under the shock load condition to use.In addition, in recent years because the develop rapidly of China's Iron And Steel Industry, cause steel scrap and iron alloy supply day to be becoming tight, price also rises steadily, therefore high mangaenese steel and alloy white cast iron production cost constantly rise, developing low-cost, high performance lining board of grinder material satisfy vast ball mill user's normal service requirements as early as possible, are extremely important undoubtedly.Chinese invention patent CN1080327 discloses a kind of low-alloyed ball mill wearing liner plate and manufacturing process, the content that it is characterized in that each material composition (weight %) is: C0.35～0.5%, Cr0.8～1.5%, Si0.6～1.2%, Mo0.3～0.5%, Mn0.6～1.4%, Cu0.5～1%, 1#RE0.01～0.1%, surplus is Fe.The principal feature of this invention is to adopt the rotten processing of 1#RE simultaneously and improve Cu content, improved the modification effect of 1#RE, played crystal grain thinning, purify crystal boundary, improved the effect of hardening capacity and tissue and performance uniformity, owing to contain expensive molybdenum and copper, therefore, production cost is higher.In addition, only add rare earth, purification and thinning effect are not so good, so this invention lining material toughness is lower, impelling strength α
k＞18J/cm
2Chinese invention patent CN1165203 also discloses a kind of multicomponent alloy abrasion-resistant anti-corrosion high-ductility liner plate and manufacture method thereof, the chemical ingredients of liner plate is (% meter by weight) C=0.45-0.65, Si=0.5-1.1, Mn=1.6-3.0, Cr=0.5-1.2, B=0.001-0.0025, Ti=0.1-0.2, P≤0.04, S≤0.04, Re=0.1, surplus is Fe.Cast liner plate by this composition, air carries out residual heat insulation 16-24h to 230-330 ℃ after 780-830 ℃ of annealing reheat is incubated certain hour to 820-860 ℃, 250-270 ℃, 4～6h tempering.This liner plate carbon content is higher, and toughness is low, and fragility is big, and in addition, the boron add-on is very little, and is unfavorable to improving liner plate hardening capacity, in addition, the thermal treatment process complexity, the cycle is long, the energy consumption height.Chinese invention patent CN101054652 also discloses a kind of ball grinding machine lining board chemical ingredients (weight percent): C0.6-0.8%, Si0.3-0.8%, Mn0.3-0.8%, Cr2.0-4.5%, Ni0.2-2.0%, Mo0.1-0.8%, S＜0.04%, P＜0.04%, surplus are Fe.Its manufacturing process is: ball grinding machine lining board is heated to 860-960 ℃, be incubated 2-3 hour, quench then and cool off in the entry, its temperature is descended fast, when workpiece surface temperature drops to 580-680 ℃, from water, take out, the air hollow in forced convection is chilled to room temperature again, carry out 480-520 ℃ of tempering afterwards, naturally cooling gets product.The ball grinding machine lining board of this invention has very high hardness, intensity, and hardening capacity is better, the wear resistance height, but contain expensive molybdenum and nickel, its cost is 1.5 times of high mangaenese steel.And carbon content is higher, and is easy to crack during shrend.
Summary of the invention
The object of the invention provides a kind of chemical ingredients and manufacture method thereof of high-strength abrasion-proof cast steel lining board.Hardness of the present invention and impelling strength are between high mangaenese steel and alloy white cast iron.By the reasonable component design, under the cold quenching condition, obtain lath martensite and add the minimal residue austenite, this martensitic steel has good impelling strength and higher hardness, and its hardness is 50-55HRC; Impelling strength α
k=60-80J/cm
2, tensile strength sigma
b=1450-1600MPa.Its microstructure is: lath martensite+minimal residue austenite, retained austenite thickness is less than 80nm.The main starting material of the present invention have steel cuttings and a small amount of cheap iron alloy, and cost is lower than high mangaenese steel, and wear resistance is better than high mangaenese steel under medium impact load.
Purpose of the present invention can realize by following measure:
High-strength abrasion-proof cast steel lining board of the present invention is characterized in that, the chemical composition weight percent of liner plate is: 0.25-0.45C, 1.0-1.8Si, 1.0-2.0Mn, 0.8-1.5Cr, 0.003-0.008B, 0.02-0.08Al, 0.04-0.15Ti, 0.02-0.10La, 0.02-0.10Ce, 0.02-0.08Ba, 0.02-0.10Ca, all the other are Fe and inevitable trace impurity, and 3.5＜Si+Mn+Cr＜4.5,0.05＜La+Ce＜0.18.
Liner plate electrosmelting of the present invention, its manufacturing technology steps is:
1. with steel cuttings, carburelant and the fusing of ferrochrome Hybrid Heating, the molten clear back of molten steel adds ferrosilicon and ferromanganese;
2. the stokehold is adjusted to branch and temperature is risen to 1610～1640 ℃ after qualified, adds aluminium deoxidation earlier, then adds the composite deoxidant of siliceous, calcium, barium and aluminium, comes out of the stove subsequently;
3. ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter of granularity, after oven dry below 200 ℃, place the casting ladle bottom, with the method that pours in the bag molten steel is carried out composite inoculating and handle less than 12mm;
4. use the sand mold casting liner plate, 1500～1540 ℃ of teeming temperatures;
5. pour into a mould the air cooling liner plate of unpacking after 2～6 hours, spruing, cleaning undesirable root, overlap, burr;
6. liner plate quenches at 880～950 ℃, soaking time 3～6 hours, and water-cooled then, tempering ℃ is carried out in reheat to 180～240, soaking time 4～10 hours, stove is chilled to less than air cooling after 150 ℃.
Effect of the present invention:
1. with the liner plate of the present invention's manufacturing, production technique is easy, and its microstructure is: lath martensite+minimal residue austenite, retained austenite thickness is less than 80nm.Liner plate hardness is 50-55HRC; Impelling strength α
k=65-80J/em
2, tensile strength sigma
b=1450-1600MPa has good wear resistance.
2. the main starting material of liner plate of the present invention have steel cuttings and a small amount of cheap iron alloy, do not contain expensive alloying element, and alloy addition is less, has lower production cost, and cost is than the low 8-15% of high mangaenese steel.
3. liner plate of the present invention is after the composite deoxidant processing and titaniferous, boron and the processing of mixed rare earth of lanthanum and cerium composite inoculating of siliceous, calcium, barium and aluminium, and inclusion is few, and fluidity molten steel is good, has good cast form performance.
4. improve more than 2.0 times than Mn13 high manganese steel lining plate the work-ing life of liner plate of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1:
With 500 kilograms of medium-frequency induction furnace melting molten steel, its manufacturing technology steps is:
1. with steel cuttings, carburelant and the fusing of ferrochrome Hybrid Heating, the molten clear back of molten steel adds ferrosilicon and ferromanganese;
2. the stokehold is adjusted to branch and temperature is risen to 1634 ℃ after qualified, adds aluminium deoxidation earlier, then adds the composite deoxidant of siliceous, calcium, barium and aluminium, comes out of the stove subsequently;
3. ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter of granularity, after oven dry below 200 ℃, place the casting ladle bottom, with the method that pours in the bag molten steel is carried out composite inoculating and handle less than 12mm;
4. use the sand mold casting liner plate, 1528 ℃ of teeming temperatures;
5. pour into a mould the air cooling liner plate of unpacking after 4 hours, spruing, cleaning undesirable root, overlap, burr;
6. liner plate quenches at 920 ℃, soaking time 4 hours, and water-cooled then, reheat to 210 ℃ carries out tempering, soaking time 8 hours, stove is chilled to less than air cooling after 150 ℃.The chemical ingredients of liner plate of the present invention sees Table 1, and the liner plate mechanical property sees Table 2.
Table 1 liner plate chemical ingredients
| Element | C | Si | Mn | Cr | B | Al | Ti |
| Composition | 0.41 | 1.38 | 1.70 | 1.09 | 0.004 | 0.052 | 0.114 |
| Element | La | Ce | Ba | Ca | S | P | Fe |
| Composition | 0.037 | 0.066 | 0.039 | 0.046 | 0.018 | 0.031 | Surplus |
Table 2 liner plate mechanical property
| Hardness HRC | Impelling strength J/cm 2 | Tensile strength MPa |
| 53.7 | 71.5 | 1553.1 |
Embodiment 2:
With 1000 kilograms of medium-frequency induction furnace melting molten steel, its manufacturing technology steps is:
1. with steel cuttings, carburelant and the fusing of ferrochrome Hybrid Heating, the molten clear back of molten steel adds ferrosilicon and ferromanganese;
2. the stokehold is adjusted to branch and temperature is risen to 1624 ℃ after qualified, adds aluminium deoxidation earlier, then adds the composite deoxidant of siliceous, calcium, barium and aluminium, comes out of the stove subsequently;
3. ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter of granularity, after oven dry below 200 ℃, place the casting ladle bottom, with the method that pours in the bag molten steel is carried out composite inoculating and handle less than 12mm;
4. use the sand mold casting liner plate, 1517 ℃ of teeming temperatures;
5. pour into a mould the air cooling liner plate of unpacking after 3 hours, spruing, cleaning undesirable root, overlap, burr;
6. liner plate quenches at 895 ℃, soaking time 5 hours, and water-cooled then, reheat to 195 ℃ carries out tempering, soaking time 6 hours, stove is chilled to less than air cooling after 150 ℃.The chemical ingredients of liner plate of the present invention sees Table 3, and the liner plate mechanical property sees Table 4.
Table 3 liner plate chemical ingredients
| Element | C | Si | Mn | Cr | B | Al | Ti |
| Composition | 0.31 | 1.64 | 1.39 | 1.20 | 0.005 | 0.039 | 0.088 |
| Element | La | Ce | Ba | Ca | S | P | Fe |
| Composition | 0.068 | 0.071 | 0.069 | 0.034 | 0.020 | 0.035 | Surplus |
Table 4 liner plate mechanical property
| Hardness HRC | Impelling strength J/cm 2 | Tensile strength MPa |
| 51.3 | 77.4 | 1494.8 |
Embodiment 3:
With 750 kilograms of medium-frequency induction furnace melting molten steel, its manufacturing technology steps is:
1. with steel cuttings, carburelant and the fusing of ferrochrome Hybrid Heating, the molten clear back of molten steel adds ferrosilicon and ferromanganese;
2. the stokehold is adjusted to branch and temperature is risen to 1638 ℃ after qualified, adds aluminium deoxidation earlier, then adds the composite deoxidant of siliceous, calcium, barium and aluminium, comes out of the stove subsequently;
3. ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter of granularity, after oven dry below 200 ℃, place the casting ladle bottom, with the method that pours in the bag molten steel is carried out composite inoculating and handle less than 12mm;
4. use the sand mold casting liner plate, 1536 ℃ of teeming temperatures;
5. pour into a mould the air cooling liner plate of unpacking after 6 hours, spruing, cleaning undesirable root, overlap, burr;
6. liner plate quenches at 930 ℃, soaking time 4 hours, and water-cooled then, reheat to 215 ℃ carries out tempering, soaking time 9 hours, stove is chilled to less than air cooling after 150 ℃.The chemical ingredients of liner plate of the present invention sees Table 5, and the liner plate mechanical property sees Table 6.
Table 5 liner plate chemical ingredients
| Element | C | Si | Mn | Cr | B | Al | Ti |
| Composition | 0.25 | 1.04 | 1.93 | 0.87 | 0.007 | 0.147 | 0.049 |
| Element | La | Ce | Ba | Ca | S | P | Fe |
| Composition | 0.020 | 0.094 | 0.075 | 0.022 | 0.018 | 0.037 | Surplus |
Table 6 liner plate mechanical property
| Hardness HRC | Impelling strength J/cm 2 | Tensile strength MPa |
| 50.8 | 79.1 | 1467.3 |
Get the liner plate of the present invention use of installing, the result is as follows:
Grind iron ore on working conditions φ 2.7m * 3.6m ball mill, mill speed 22.4rpm, iron ore ore pulp pH:4.5～6.5, ore hardness f:14～18, maximum ball radius＜120mm goes into ore grinding stone granularity 0～40mm.Test with machine with high manganese steel lining plate, grinding machine work is after 6 months, the abrasion loss of high manganese steel lining plate on average reaches 29.6mm, and the greatest wear amount of liner plate of the present invention only is 9.1mm, wear liner of the present invention is even, do not have in the use peel off, phenomenon of rupture occurs, its wear resistance improves more than 2 times than Mn13 high manganese steel lining plate.In addition, liner plate of the present invention is used to grind cement clinker on φ 3.5m * 8.1m ball mill, and improve 2.5 times or more than high manganese steel lining plate work-ing life.
Liner plate of the present invention is main raw material with the steel cuttings, add an amount of Si, Mn and Cr alloying element in addition, also add elements such as a small amount of B, Al, Ti, La, Ce, Ca and Ba, do not contain alloying elements such as expensive nickel, molybdenum, copper, vanadium, the starting material source is abundant, cheap, liner plate of the present invention has lower production cost, than the low 8-15% of high manganese steel lining plate, and long service life, improve more than 2 times than Mn13 high manganese steel lining plate.Liner plate of the present invention is safe in utilization, reliable, and the market competitiveness is strong, applies to have remarkable economical and social benefit.
Claims (2)
1. a high-strength abrasion-proof cast steel lining board is characterized in that, the chemical composition weight percent of liner plate is: 0.25-0.45C, 1.0-1.8Si, 1.0-2.0Mn, 0.8-1.5Cr, 0.003-0.008B, 0.02-0.08Al, 0.04-0.15Ti, 0.02-0.10La, 0.02-0.10Ce, 0.02-0.08Ba, 0.02-0.10Ca, all the other are Fe and inevitable trace impurity, and 3.5＜Si+Mn+Cr＜4.5,0.05＜La+Ce＜0.18.
2. liner plate manufacture method as claimed in claim 1 is characterized in that, uses electric furnace production, and its processing step is:
1. with steel cuttings, carburelant and the fusing of ferrochrome Hybrid Heating, the molten clear back of molten steel adds ferrosilicon and ferromanganese;
2. the stokehold is adjusted to branch and temperature is risen to 1610～1640 ℃ after qualified, adds aluminium deoxidation earlier, then adds the composite deoxidant of siliceous, calcium, barium and aluminium, comes out of the stove subsequently;
3. ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter of granularity, after oven dry below 200 ℃, place the casting ladle bottom, with the method that pours in the bag molten steel is carried out composite inoculating and handle less than 12mm;
4. use the sand mold casting liner plate, 1500～1540 ℃ of teeming temperatures;
5. pour into a mould the air cooling liner plate of unpacking after 2～6 hours, spruing, cleaning undesirable root, overlap, burr;
6. liner plate quenches at 880～950 ℃, soaking time 3～6 hours, and water-cooled then, tempering ℃ is carried out in reheat to 180～240, soaking time 4～10 hours, stove is chilled to less than air cooling after 150 ℃.
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| CNB200710178690XA CN100489139C (en) | 2007-12-04 | 2007-12-04 | High-strength abrasion-proof cast steel lining board and manufacturing method thereof |
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| CN100489139C CN100489139C (en) | 2009-05-20 |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101597678B (en) * | 2008-06-03 | 2011-01-26 | 顾开明 | Method for processing wear resistance steel medium alloy lining board |
| CN101597683B (en) * | 2008-06-03 | 2011-01-26 | 顾开明 | Method for processing wear resistance steel medium alloy lining board |
| CN101988174A (en) * | 2010-12-06 | 2011-03-23 | 宝钢集团新疆八一钢铁有限公司 | Large-scale ball mill liner and heat treatment method thereof |
| CN101787496B (en) * | 2010-01-08 | 2011-07-27 | 北京工业大学 | Wear resistant cast steel and preparation method thereof |
| CN102230135A (en) * | 2011-06-17 | 2011-11-02 | 天津市蓟县东塔耐磨钢球厂 | Martensite wear resistant steel and manufacturing method thereof |
| CN102296236A (en) * | 2011-08-12 | 2011-12-28 | 河曲县万联节能材料有限公司 | Wear resistant steel ball and segment specially used in mines |
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2007
- 2007-12-04 CN CNB200710178690XA patent/CN100489139C/en not_active Expired - Fee Related
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Assignee: SANMING CITY YIJUN MACHINERY FOUNDRY CO., LTD. Assignor: Beijing University of Technology Contract fulfillment period: 2009.7.9 to 2014.7.9 contract change Contract record no.: 2009990000750 Denomination of invention: High-strength abrasion-proof cast steel lining board and manufacturing method thereof Granted publication date: 20090520 License type: Exclusive license Record date: 2009.7.15 |
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