CN103436800A - Iron-chromium alloy having high wear and corrosion resistance and corrosion resistance - Google Patents
Iron-chromium alloy having high wear and corrosion resistance and corrosion resistance Download PDFInfo
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- CN103436800A CN103436800A CN2013103014016A CN201310301401A CN103436800A CN 103436800 A CN103436800 A CN 103436800A CN 2013103014016 A CN2013103014016 A CN 2013103014016A CN 201310301401 A CN201310301401 A CN 201310301401A CN 103436800 A CN103436800 A CN 103436800A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 36
- 230000007797 corrosion Effects 0.000 title claims abstract description 35
- 229910000599 Cr alloy Inorganic materials 0.000 title abstract 3
- 239000000788 chromium alloy Substances 0.000 title abstract 3
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 68
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 62
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 claims abstract description 33
- 239000010949 copper Substances 0.000 claims abstract description 33
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 239000011651 chromium Substances 0.000 claims abstract description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 15
- 239000011733 molybdenum Substances 0.000 claims abstract description 15
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 239000003818 cinder Substances 0.000 claims description 36
- FXNGWBDIVIGISM-UHFFFAOYSA-N methylidynechromium Chemical compound [Cr]#[C] FXNGWBDIVIGISM-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 18
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 16
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 16
- 239000011575 calcium Substances 0.000 claims description 16
- 229910052791 calcium Inorganic materials 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 12
- 239000010436 fluorite Substances 0.000 claims description 12
- 239000004571 lime Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000005275 alloying Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000011534 incubation Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 6
- 239000002667 nucleating agent Substances 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 229910001566 austenite Inorganic materials 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 8
- 229910052748 manganese Inorganic materials 0.000 description 8
- 239000011572 manganese Substances 0.000 description 8
- 238000007669 thermal treatment Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 4
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
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- 238000002161 passivation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The invention relates to an iron-chromium alloy having high wear and corrosion resistance and corrosion resistance, and belongs to the field of material invention. The iron-chromium alloy comprises the ingredients by mass fraction: 0.5-2.0% of carbon, 0.5-2.0% of manganese, 0.5-2.0% of silicon, 27.0-35.0% of chromium, 0.5-3.0% of nickel, 0.5-3.0% of molybdenum, 0.5-3.0% of copper, and 49.0-71.0% of iron. A double-phase matrix contains a large amount of alloy chromium, molybdenum, copper and other elements which are easy to passivate and have good pitting resistance; under the composite action of nickel, molybdenum and copper, chromium greatly improves performance of the material resisting corrosion of reducing media, organic acids and other media, can also improve the material excellent corrosion resistance endowed by the double-phase matrix; and at the same time, the material is endowed with the excellent wear and corrosion resistance by a chromium-containing carbide distributed on grain boundaries and a secondary carbide precipitated on the matrix.
Description
Technical field
This patent relates to a kind of high wear resistant and corrosion resistant ferrochrome exothermic, belongs to the material invention field.
Background technology
In flue gas desulphurization limestone-gypsum technique, there is low PH for the lime stone slurry that absorbs flue gas SO2, high Cl-concentration, the high characteristic containing solid particle, the pump housing that circulation is absorbed, impeller, stirring arm, nozzle, pipeline etc. have very high corrosion and abrasive action, therefore harsh especially to the material requirements of these local parts.
This station medium situation is: lime-lime stone slurry, and proportion 1.15-1.3, solid content 15-35%, temperature 40-70 ℃, chloride ion content is at 20000-50000ppm, and PH is between 4-6.5.
The current circulating pump impeller at this station, external pump industry mainly adopts the highly corrosion resistant material, as super-duplex stainless steel 2507, super austenitic stainless steel 254SMo, 654SMo, the materials erosion resistance can meet the requirement of this station fully, but hardness is basically all below HRC30, can not meet the requirement that the medium solid content is high, affect its work-ing life.Other domestic and international well-known pump corporate boss will adopt the line with rubber technology, and the rubber served as a contrast can meet the requirement of medium erosion resistant, but rubber use after certain hour can be aging and come off, change trouble and easy plug nozzle, cause desulfuration efficiency to descend.Some pump enterprises adopts the high chromium cast iron material of high abrasion, although hardness very high energy reach the HRC50-60 left and right, not corrosion-resistant in this acidity and the very high medium of chloride ion content, also impact and work-ing life.
Summary of the invention
The objective of the invention is in order to solve in prior art material or corrosion resistant but not wear-resisting, or wear-resisting but corrosion resistant not, thereby the problem that can't satisfy the demands provides a kind of high wear resistant and corrosion resistant ferrochrome exothermic.
The objective of the invention is to be achieved through the following technical solutions.
A kind of high wear resistant of the present invention and corrosion resistant ferrochrome exothermic, its composition comprises: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 0.5-2.0%, 0.5-2.0%, 0.5-2.0%, 27.0-35.0%, 0.5-3.0%, 0.5-3.0%, 0.5-3.0%, 49-71%; Its display organization is ferrite+austenite+granular eutectic carbides+proeutectoid carbide;
Described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion;
Preparation method's concrete steps of a kind of high wear resistant of the present invention and corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1, be ready to the furnace charges such as soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium by the alloying element requirement;
2, prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3,, by ready material in step 11, after weighing weight according to the massfraction of ferrochrome exothermic, according to the order of soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium, join successively in finishing stove;
4, monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1540-1560 ℃, temperature gets the on-the-spot sample analysis sample; Starts scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is Metal Weight 1%, divides and adds for 3 times; In the time of 1540 ± 20 ℃, start, with deoxidation material diffusive deoxidation 5-7 time, to add the deoxidation material of Metal Weight 0.05%, every crowd of interval 2-3 minute at every turn.In scarfing cinder and deoxidation process, according to the slag condition, with fluorite, slag is adjusted dense, then artificial slag hitting.
5, the on-the-spot sample analysis sample of step 14 being obtained is detected, and detects consistent that in the on-the-spot sample analysis sample, whether each component content requires with ferrochrome exothermic; If inconsistent, according to standard, composition is adjusted, reach the requirement of desired chemical composition; Finally obtain standard compliant molten steel;
6, the standard compliant molten steel of step 5 gained is come out of the stove 1540-1560 ℃ the time, the 0.2%-0.4% by this stove Metal Weight adds rare earth silicon to breed simultaneously, and the incubation time must not surpass 6 minutes, nucleating agent granularity≤15mm; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature, obtain sample.
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour≤40 ℃ of heat-up rates, until between 600-800 ℃; Now be incubated 6-8 hour; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain high wear resistant and corrosion resistant ferrochrome exothermic.
Described " ferrite " refers to the body-centered cubic iron containing solid solution chromium;
Described " austenite " refers to the face-centered cubic iron containing solid solution carbon and chromium;
Beneficial effect
A kind of high wear resistant of the present invention and corrosion resistant ferrochrome exothermic, contain the elements such as the good alloy chromium of a large amount of easily passivation and pitting resistance, molybdenum, copper in the two-phase matrix, chromium is under the compound action of nickel, molybdenum, copper, greatly improve the corrosive nature of the media such as material reducing resistance medium, organic acid, can also improve material and be given the erosion resistance of material excellence by the two-phase matrix, simultaneously, the chromium containing carbide that is distributed in crystal boundary gives material good wear-corrosion resistance with the proeutectoid carbide be deposited on matrix.
The accompanying drawing explanation
Microstructure before the thermal treatment that Fig. 1 is this patent alloy;
Microstructure after the thermal treatment that Fig. 2 is this patent alloy.
Embodiment
Embodiment 1
A kind of high wear resistant and corrosion resistant ferrochrome exothermic comprise: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 0.5%, 0.5%, 0.5%, 27%, 0.5%, 0.5%, 0.5%, 70%; Its display organization is ferrite+austenite+granular eutectic carbides+proeutectoid carbide;
Described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion;
A kind of high wear resistant of this example and preparation method's concrete steps of corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1, be ready to soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium furnace charge by the alloying element requirement;
2, prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3, by ready material in step 11, according to the molten steel gross weight of 60kg, according to the massfraction calculating of ferrochrome exothermic, required all kinds of charging weight (kg) is respectively soft steel 31.7, high carbon chromium 3.0, middle carbon chromium 24.0, nickel plate 0.3, molybdenum-iron 0.5, electrolytic manganese 0.1, electrolytic copper 0.3, silico-calcium 0.1, weigh weight by this requirement, then the order according to soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium joins in finishing stove successively;
4, monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1550 ℃, temperature gets the on-the-spot sample analysis sample; Start scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is 6kg, divides and adds each 2kg 3 times; Start, with deoxidation material diffusive deoxidation 6 times, to add the deoxidation material of 0.03kg 3 minutes, the every batch of interval in the time of 1540 ℃ at every turn.With fluorite, the concentration of slag is coagulated the soup and made its gathering in scarfing cinder and deoxidation process.
5, the on-the-spot sample analysis sample of step 14 being obtained detects analysis, the composition of each alloying element is respectively: carbon 0.052%, manganese 0.49%, silicon 0.51%, chromium 27.02%, nickel 0.49%, molybdenum 0.50%, copper 0.51%, iron 70.43%, this component content does not need to carry out the composition adjustment in the limit of error of target component.
6, the standard compliant molten steel of step 5 gained is come out of the stove 1560 ℃ the time, add rare earth silicon 0.2kg to breed, 5 minutes incubation times, nucleating agent granularity≤15mm simultaneously; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature; Obtain sample;
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour 40 ℃ of heat-up rates, until 700 ℃; Now be incubated 8 hours; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain the needed ferrochrome exothermic of embodiment 1.
As follows by after normal smelting and annealing thermal treatment, detecting performance:
Embodiment 2
A kind of high wear resistant and corrosion resistant ferrochrome exothermic comprise: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 2.0%, 2.0%, 2.0%, 35.0%, 3.0%, 3.0%, 3.0%, 50%.
Described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion;
A kind of high wear resistant of this example and preparation method's concrete steps of corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1, be ready to soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium furnace charge by the alloying element requirement;
2, prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3, by ready material in step 11, according to the molten steel gross weight of 60kg, according to the massfraction calculating of ferrochrome exothermic, required all kinds of charging weight (kg) is respectively soft steel 16.3, high carbon chromium 13.0, middle carbon chromium 22.0, nickel plate 1.8, molybdenum-iron 3.0, electrolytic manganese 1.1, electrolytic copper 1.8, silico-calcium 1.0, weigh weight by this requirement, then the order according to soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium joins in finishing stove successively;
4, monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1550 ℃, temperature gets the on-the-spot sample analysis sample; Start scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is 6kg, divides and adds each 2kg 3 times; Start, with deoxidation material diffusive deoxidation 6 times, to add the deoxidation material of 0.03kg 3 minutes, the every batch of interval in the time of 1540 ℃ at every turn.With fluorite, the concentration of slag is coagulated the soup and made its gathering in scarfing cinder and deoxidation process.
5, the on-the-spot sample analysis sample of step 14 being obtained detects analysis, the composition of each alloying element is respectively: carbon 1.998%, manganese 2.08%, silicon 2.04%, chromium 35.0%, nickel 3.0%, molybdenum 2.98%, copper 3.0%, iron 49.9%, this component content does not need to carry out the composition adjustment in the limit of error of target component.
6, the standard compliant molten steel of step 5 gained is come out of the stove 1560 ℃ the time, add rare earth silicon 0.2kg to breed, 5 minutes incubation times, nucleating agent granularity≤15mm simultaneously; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature; Obtain sample;
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour 40 ℃ of heat-up rates, until 700 ℃; Now be incubated 8 hours; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain the needed ferrochrome exothermic of embodiment 2.
As follows by after normal smelting and annealing thermal treatment, detecting performance:
Embodiment 3
A kind of high wear resistant and corrosion resistant ferrochrome exothermic comprise: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 1.3%, 1.3%, 1.3%, 31.0%, 1.7%, 1.7%, 1.7%, 60%.
Described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion;
A kind of high wear resistant of this example and preparation method's concrete steps of corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1, be ready to soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium furnace charge by the alloying element requirement;
2, prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3, by ready material in step 11, according to the molten steel gross weight of 60kg, according to the massfraction calculating of ferrochrome exothermic, required all kinds of charging weight (kg) is respectively soft steel 24.4, high carbon chromium 8.0, middle carbon chromium 23.0, nickel plate 1.0, molybdenum-iron 1.7, electrolytic manganese 0.6, electrolytic copper 1.0, silico-calcium 0.3, weigh weight by this requirement, then the order according to soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium joins in finishing stove successively;
4, monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1550 ℃, temperature gets the on-the-spot sample analysis sample; Start scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is 6kg, divides and adds each 2kg 3 times; Start, with deoxidation material diffusive deoxidation 6 times, to add the deoxidation material of 0.03kg 3 minutes, the every batch of interval in the time of 1540 ℃ at every turn.With fluorite, the concentration of slag is coagulated the soup and made its gathering in scarfing cinder and deoxidation process.
5, the on-the-spot sample analysis sample of step 14 being obtained detects analysis, the composition of each alloying element is respectively: carbon 1.301%, manganese 1.29%, silicon 1.29%, chromium 31.0%, nickel 1.67%, molybdenum 1.69%, copper 1.67%, iron 60.09%, the limit of error of nickel and copper miss the mark composition in this composition, calculating need to add electrolytic copper 0.02kg, nickel plate 0.02kg.
6, the standard compliant molten steel of step 5 gained is come out of the stove 1560 ℃ the time, add rare earth silicon 0.2kg to breed, 5 minutes incubation times, nucleating agent granularity≤15mm simultaneously; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature; Obtain sample;
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour 40 ℃ of heat-up rates, until 700 ℃; Now be incubated 8 hours; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain the needed ferrochrome exothermic of embodiment 3.
As follows by after normal smelting and annealing thermal treatment, detecting performance:
Embodiment 4
Composition (w%)
| C | Mn | Si | Cr | Ni | Mo | Cu |
| 1.36 | 0.8 | 0.8 | 28.0 | 2.0 | 2.0 | 1.5 |
A kind of high wear resistant and corrosion resistant ferrochrome exothermic comprise: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 1.36%, 0.8%, 1.2%, 28.0%, 2.0%, 2.0%, 1.5%, 63.1%.
Described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion;
A kind of high wear resistant of this example and preparation method's concrete steps of corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1, be ready to soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium furnace charge by the alloying element requirement;
2, prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3, by ready material in step 11, according to the molten steel gross weight of 60kg, according to the massfraction calculating of ferrochrome exothermic, required all kinds of charging weight (kg) is respectively soft steel 27.3, high carbon chromium 8.5, middle carbon chromium 19.5, nickel plate 1.2, molybdenum-iron 2.0, electrolytic manganese 0.3, electrolytic copper 0.9, silico-calcium 0.3, weigh weight by this requirement, then the order according to soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium joins in finishing stove successively;
4, monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1550 ℃, temperature gets the on-the-spot sample analysis sample; Start scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is 6kg, divides and adds each 2kg 3 times; Start, with deoxidation material diffusive deoxidation 6 times, to add the deoxidation material of 0.03kg 3 minutes, the every batch of interval in the time of 1540 ℃ at every turn.With fluorite, the concentration of slag is coagulated the soup and made its gathering in scarfing cinder and deoxidation process.
5, the on-the-spot sample analysis sample of step 14 being obtained detects analysis, the composition of each alloying element is respectively: carbon 1.364%, manganese 0.82%, silicon 1.21%, chromium 28.1%, nickel 2.0%, molybdenum 1.98%, copper 1.51%, iron 63.0%, this component content does not need to carry out the composition adjustment in the limit of error of target component.
6, the standard compliant molten steel of step 5 gained is come out of the stove 1560 ℃ the time, add rare earth silicon 0.2kg to breed, 5 minutes incubation times, nucleating agent granularity≤15mm simultaneously; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature; Obtain sample;
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour 40 ℃ of heat-up rates, until 700 ℃; Now be incubated 8 hours; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain the needed ferrochrome exothermic of embodiment 1.
As follows by after normal smelting and annealing thermal treatment, detecting performance:
By choose minimum in composition range, maximum, middle and and optimum value contrast and carries out mechanicl test and simulate the industrial and mineral corrosion test, can find, it is four kinds of optimum values in composition that composition in example 4 casts out the tensile strength, yield strength, ballistic work, hardness, the corrosion rate that carry out product, is also to meet most the needed mechanical property of flow passage part and corrosion-proof wear performance under this operating mode.
Claims (5)
1. a high wear resistant and corrosion resistant ferrochrome exothermic, it is characterized in that: composition comprises: carbon, manganese, silicon, chromium, nickel, molybdenum, copper, iron; Their massfraction is respectively: 0.5-2.0%, 0.5-2.0%, 0.5-2.0%, 27.0-35.0%, 0.5-3.0%, 0.5-3.0%, 0.5-3.0%, 49-71%.
2. a kind of high wear resistant as claimed in claim 1 and corrosion resistant ferrochrome exothermic, it is characterized in that: described ferrochrome exothermic also comprises sulphur, phosphorus and other inclusion.
3. preparation method's concrete steps of a high wear resistant and corrosion resistant ferrochrome exothermic are as follows:
Step 1, melting operation
1), be ready to the furnace charges such as soft steel, high carbon chromium, middle carbon chromium, molybdenum-iron, nickel plate, electrolytic copper, electrolytic manganese, graphite, silico-calcium by the alloying element requirement;
2), prepare scarfing cinder material and deoxidation material; The scarfing cinder material is lime and fluorite, and the preparation ratio is CaO: CaF2=3: 1; Deoxidation material is aluminium lime, and the preparation ratio is Al: CaO=2: 1;
3), by ready material in step 11, after weighing weight according to the massfraction of ferrochrome exothermic, according to the order of soft steel, nickel plate, ferrochrome, molybdenum-iron, electrolytic copper, electrolytic manganese, silico-calcium, join successively in finishing stove;
4), monitoring device starts the melting of switching on after intact, obtains molten steel after dissolving; Top temperature is 1560 ℃; When being 1540-1560 ℃, temperature gets the on-the-spot sample analysis sample; Starts scarfing cinder with the scarfing cinder material after sampling, the addition of scarfing cinder material is Metal Weight 1%, divides and adds for 3 times; In the time of 1540 ± 20 ℃, start, with deoxidation material diffusive deoxidation 5-7 time, to add the deoxidation material of Metal Weight 0.05%, every crowd of interval 2-3 minute at every turn; In scarfing cinder and deoxidation process, according to the slag condition, with fluorite, slag is adjusted dense, then artificial slag hitting;
5), on-the-spot sample analysis sample that step 14 is obtained detected, and detects consistent that in the on-the-spot sample analysis sample, whether each component content requires with ferrochrome exothermic; If inconsistent, according to standard, composition is adjusted, reach the requirement of desired chemical composition; Finally obtain standard compliant molten steel;
6), the standard compliant molten steel of step 5 gained is come out of the stove 1540-1560 ℃ the time, the 0.2%-0.4% by this stove Metal Weight adds rare earth silicon to breed simultaneously, and the incubation time must not surpass 6 minutes, nucleating agent granularity≤15mm; Molten steel is poured in prefabricated sample die cavity, be cooled to room temperature, obtain sample;
Step 2, heat treatment step
The temperature of maintenance stove≤50 ℃, be positioned over the sample of step 16 gained in stove; The temperature of rising stove, per hour≤40 ℃ of heat-up rates, until between 600-800 ℃; Now be incubated 6-8 hour; Then after below furnace cooling to 100 ℃, be placed in air and be cooled to room temperature, can obtain high wear resistant and corrosion resistant ferrochrome exothermic.
4. a kind of high wear resistant as described as claim 1 or 3 and corrosion resistant ferrochrome exothermic is characterized in that: described " ferrite " refers to the body-centered cubic iron containing solid solution chromium.
5. a kind of high wear resistant as described as claim 1 or 3 and corrosion resistant ferrochrome exothermic is characterized in that: described " austenite " refers to the face-centered cubic iron containing solid solution carbon and chromium.
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| CN104073711A (en) * | 2014-06-25 | 2014-10-01 | 天津市汇利通金属表面技术有限公司 | Wear-resisting air compressor cylinder sleeve material composition and cylinder sleeve preparation method |
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| CN105483558A (en) * | 2015-12-08 | 2016-04-13 | 襄阳五二五泵业有限公司 | High-chromium alloy material for flue gas desulfurization pump and manufacturing method of high-chromium alloy material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050569A (en) * | 1989-08-04 | 1991-04-10 | 沃曼国际有限公司 | Ferrochrome exothermic |
| CN102634720A (en) * | 2012-04-17 | 2012-08-15 | 扬州五亭桥缸套有限公司 | Nodular cast iron cylinder sleeve and manufacturing method thereof |
-
2013
- 2013-07-18 CN CN2013103014016A patent/CN103436800A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050569A (en) * | 1989-08-04 | 1991-04-10 | 沃曼国际有限公司 | Ferrochrome exothermic |
| CN102634720A (en) * | 2012-04-17 | 2012-08-15 | 扬州五亭桥缸套有限公司 | Nodular cast iron cylinder sleeve and manufacturing method thereof |
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| CN104073711A (en) * | 2014-06-25 | 2014-10-01 | 天津市汇利通金属表面技术有限公司 | Wear-resisting air compressor cylinder sleeve material composition and cylinder sleeve preparation method |
| CN104975327A (en) * | 2015-07-01 | 2015-10-14 | 安徽红桥金属制造有限公司 | Conductive rod of alloy galvanized roller |
| CN105483558A (en) * | 2015-12-08 | 2016-04-13 | 襄阳五二五泵业有限公司 | High-chromium alloy material for flue gas desulfurization pump and manufacturing method of high-chromium alloy material |
| CN107574388A (en) * | 2016-07-04 | 2018-01-12 | 遵义拓特铸锻有限公司 | A kind of high carbon and chromium ferritic stainless steel and preparation method thereof |
| CN107574390A (en) * | 2016-07-04 | 2018-01-12 | 遵义拓特铸锻有限公司 | A kind of phosphoric acid material pulp pump stainless steel impeller and preparation method thereof |
| CN109609837A (en) * | 2018-12-12 | 2019-04-12 | 国家电投集团黄河上游水电开发有限责任公司 | Alloy material for carbon kneading mechanical reamer for aluminum |
| CN112226671A (en) * | 2020-09-29 | 2021-01-15 | 安徽索立德铸业有限公司 | Wear-resistant corrosion-resistant alloy for water pump casting and preparation method thereof |
| CN113481421A (en) * | 2021-06-24 | 2021-10-08 | 襄阳五二五泵业有限公司 | Chromium-nickel alloy for bushing bush and preparation method thereof |
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Application publication date: 20131211 |