CN106435335B - Amorphous inovulant for rich chromium cast iron and preparation method thereof and application method - Google Patents
Amorphous inovulant for rich chromium cast iron and preparation method thereof and application method Download PDFInfo
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- CN106435335B CN106435335B CN201611025152.2A CN201611025152A CN106435335B CN 106435335 B CN106435335 B CN 106435335B CN 201611025152 A CN201611025152 A CN 201611025152A CN 106435335 B CN106435335 B CN 106435335B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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- C21C1/08—Manufacture of cast-iron
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Abstract
The present invention is amorphous inovulant for rich chromium cast iron and preparation method thereof and application method, and the amorphous inovulant of this rich chromium cast iron includes each element composition of following percentage by weight：21 42 Re, 32 44 Si, 0.05 2 Ti, 0 0.7 B, 0 0.6 Cr, 0 0.5 Cu, surplus Fe.The preparation of this amorphous inovulant uses the very fast cooling method different from prior art processes condition, and the addition of amorphous inovulant is 0.03 0.12WT.% of pouring ladle gray cast iron liquation.The rich chromium cast iron of inoculation is carried out by the amorphous inovulant of the present invention, its high hardness martensitic matrix can forcefully support tiny carbide particle, and carbide comes off from wear surface during avoiding use, improves the high-wearing feature of material.
Description
Technical field
The invention belongs to cast-iron alloy, more particularly to amorphous inovulant for rich chromium cast iron and preparation method thereof and makes
Use method.
Background technology
Rich chromium cast iron is the abbreviation of high chromium white antifriction cast iron, it with the wearability better than steel alloy, better than common spoken parts in traditional operas
The toughness and intensity of cast iron and good high temperature resistance and corrosion resistance and as a kind of production is convenient, moderate cost, performance
One of excellent Wear-resistant metal material.As engineering machinery continues to develop, mechanical property to rich chromium cast iron wearing piece it is also proposed that
Higher and higher requirement.
Experimental studies have found that：Rich chromium cast iron can obtain martensite, retained austenite by high-alloying and heat treatment
The alloy carbide of matrix and chromium.This alloy carbide hardness is up to HV1200-1600, far above cementite carbide size
With the hardness of common abrasive mineral particles.The presence of this kind of carbide is the main reason for rich chromium cast iron obtains high-wearing feature.It is but high
Eutectic structure in chrome cast iron is different from the ledeburite in general cast iron, the ledeburite in ordinary white cast iron in continuous net-shaped,
And the eutectic carbide of rich chromium cast iron is in the block and bar state disconnected.In the as-cast structure of high-chromium cast iron alloy, matrix
Crystal grain is thicker, and the carburizing body phase in eutectic ledeburite organization is still in thicker sheet, and an alloyed cementite is mostly mutually thick
Big polygonal shape and strip.The firmly crisp phase of thick cementite has seriously isolated matrix, is unfavorable for high-chromium cast iron alloy
Intensity and toughness.
Authorization Notice No. CN103111609B discloses a kind of amorphous alloy inoculation cast aluminium alloy gold method, described
Inovulant includes Zr systems, Ni systems, Cu systems, the polynary non-crystaline amorphous metal of Al systems and Ti systems, and composition is by atomic percent：Zr50Cu50；
Zr55Cu30A110Ni5；Zr65Cu15Al10Ni10；(Zr55Cu30A110Ni5)95La5；Ni60Nb25Ti15；
Ni70Nb10Ti10Zr10；Cu47Ti34Zr11Ni8；Cu47Ti34Zr11Ni8；Ti50Cu45Ni5；Ti50Cu45Ni5；
Al84Ni10La6；(1) preparation of inovulant：A) under the protection of high-purity argon gas, the simple metal thing that will mix by a certain percentage
Material, alloy is smelted into high vacuum Multifunctional arc stove, and inhales and cast bar；B) and then by bar by high vacuum sensing add
Amorphous ribbon is made in the single roller rotation system of quenching of heat.The technological parameter of inoculation is：The amorphous thin ribbon prepared is poured in aluminium alloy
Aluminium alloy melt is added before casting, aluminium alloy melt temperature is 750 DEG C -770 DEG C；Amorphous innoculant adding quantity is aluminium alloy weight
0.05-1.0wt.%；The inoculation time is the 15-600 seconds；Aided Machine stirs the 0-300 seconds；Assisting ultrasonic shakes 0-180
Second.The inovulant of this method is sheet banding, is easy to disperse in the melt, uniformly, its cluster and nanocrystalline is progressively scattered in aluminium
In alloy melt, as α-Al heterogeneous forming core core, the core of primary α-Al forming core in aluminium alloy melt is significantly increased
Quantity, so as to obviously refine α-Al crystal grain.
Authorization Notice No. CN102011026B discloses aviation fasteners titanium alloy and preparation method thereof, is directed to
The raw material of amorphous titanium alloy inovulant is Cu by the mass percent of element：10%~15%, Ni：10%~15%, Al：1%
~5%, V：1%~5%, Fe：3%~10%, B：1%~5%, Zr：5%~10%, Cr：1%~5%, surplus Ti；It is non-
The preparation of brilliant titanium alloy inovulant uses very fast cooling method, first the vacuum pressure value ＞ 2 × 10 in vacuum arc furnace ignition-3Pa,
Arc current 200A~300A after the starting the arc, raw material all cool to room temperature with the furnace after fusing, obtain titan alloy casting ingot, then by gained
Titan alloy casting ingot above-mentioned fusing and is cooled to the smelting operation process 4 times~6 times of room temperature repeatedly in water jacketed copper crucible, obtains into
Split-phase is being evacuated to vacuum ＞ 2 × 10 to uniform titan alloy casting ingot, then by the relatively uniform titan alloy casting ingot of the composition- 3In 900 DEG C~1100 DEG C equalizing temperatures annealing 7h~10h, the titanium of obtained composition substantially uniformity in Pa vacuum annealing furnace
Alloy cast ingot；Last high-purity argon gas to the pressure value of vacuum is 0.06Pa~0.08Pa, and raw material is put into non-consumable vacuum electric
In the water jacketed copper crucible of arc stove, tungsten electrode position is adjusted, is allowed to the amorphous titanium alloy inovulant original with being put into water jacketed copper crucible
The distance between material is 0.5mm~1.5mm, closes fire door and vent valve, is evacuated to vacuum pressure value ＞ 2 × 10-3After Pa,
The pressure value that high-purity argon gas is subsequently charged with to vacuum is 0.06Pa~0.08Pa, after the starting the arc adjust arc current gradually rise to
200A~300A, whole process are all protected with high-purity argon gas, to whole melting sources, are cooled to room temperature with the furnace, are obtained titanium alloy
Ingot casting, then gained titan alloy casting ingot above-mentioned fusing and is cooled to the smelting operation process 4 of room temperature repeatedly in water jacketed copper crucible
It is secondary~6 times, the relatively uniform titan alloy casting ingot of composition is obtained, the relatively uniform titan alloy casting ingot of the composition is being evacuated to very
Reciprocal of duty cycle ＞ 2 × 10-3In 900 DEG C~1100 DEG C equalizing temperatures annealing 7h~10h in Pa vacuum annealing furnace, it is complete that composition is made
The titan alloy casting ingot of homogenization；Amorphous titanium alloy band, as amorphous titanium alloy inovulant are obtained finally by quick quenching technique.
The content of the invention
It is an object of the present invention to disclose a kind of amorphous inovulant for rich chromium cast iron, another object is disclosure
The preparation method of the amorphous inovulant, further object are the application method for providing the amorphous inovulant.
The present invention takes following technical scheme to achieve the above object：The amorphous for rich chromium cast iron of the present invention breeds
Agent, it is made up of each element of following percentage by weight：21-42 Re, 32-44 Si, 0.05-2 Ti, 0-0.7 B, 0-0.6
Cr, 0-0.5 Cu, surplus Fe.
The amorphous inovulant each element for rich chromium cast iron forms：21-24 Re, 40-44 Si, 0.05-2.0
Ti, 0-0.1 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：24.7-27 Re, 39-43 Si,
0.05-2.0 Ti, 0-0.2 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：27-30 Re, 38-42 Si, 0.05-
2.0 Ti, 0-0.3 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：30-33 Re, 36-40 Si, 0.05-
1.0 Ti, 0-0.4 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：33-36 Re, 35-39 Si, 0.05-
1.0 Ti, 0-0.5 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：36-39 Re, 33-38 Si, 0.05-
1.0 Ti, 0-0.6 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The each element of the amorphous inovulant for rich chromium cast iron forms：39-42 Re, 32-37 Si, 0.05-
1.0 Ti, 0-0.7 B, 0-0.6 Cr, 0-0.5 Cu, surplus Fe.
The amorphous inovulant preparation method of the present invention：The amorphous inovulant each element raw material that granularity is 2-8mm is put into very
The water jacketed copper crucible of empty quick quenching furnace, adjust electrode position, be allowed to the distance between raw alloy particle in crucible for 0.5~
1.5mm, fire door, feed inlet and outlet and vent valve are closed, is evacuated to 3-4 × 10-3Argon gas is filled with after Pa, vacuum quick quenching furnace pressure is protected
Hold the regulation arc current after 0.04~-0.06Pa, the starting the arc to gradually rise to 650~800A, the raw alloy in crucible melted,
When the alloy is all fused into liquid, the crucible is tilted so that the alloy molten solution leads to the water cooling molybdenum of rotation at a high speed by runner
Wheel is allowed to very fast solidification and forms thin ribbon shaped and dished out along molybdenum wheel tangential direction, and the receiving warehouse for falling into vacuum furnace body bottom obtains amorphous
Inovulant, molybdenum wheel edge linear velocity are 46~55m/ seconds, and molybdenum wheel surface temperature is 10~12 DEG C.
The thin ribbon shaped amorphous inovulant, its average thickness 0.1~0.2mm, 0.3~0.7mm of mean breadth, average length
0.7~0.8mm.
The application method of amorphous inovulant of the present invention：Before cast, rich chromium cast iron liquation is poured into pouring ladle from operating bag
When with flowing molten iron add amorphous inovulant；Or, amorphous inovulant is laid immediately on pouring ladle bottom surface, rich chromium cast iron liquation is from operating
Bag mixes when pouring into pouring ladle with rich chromium cast iron liquation, and the addition of amorphous inovulant is pouring ladle rich chromium cast iron liquation
0.02-0.6WT.%.
Advantages and advantages of the invention are：This amorphous inovulant can reduce interface can so that original during liquid
Binding ability between son greatly reduces, increase atomic jump, the ability of movement, so that the length of liquid atomic short-range order
Shorten, improve the mobility of molten iron；And make the degree of supercooling increase during solidification of liquid rich chromium cast iron, forming core core significantly increases
Add, change solidification mode, reduce solidification temperature range, improve nucleation rate, add forming core amount so that crystal grain quantity is obvious
Increase, crystallite dimension is substantially refined, and grain boundary area becomes big, effectively hinders the sliding of dislocation, overcomes and thus cause
The firmly crisp phase of cementite isolate the problem of metallic matrix hinders high-chromium cast iron alloy intensity and toughness.Amorphous by the present invention is pregnant
The rich chromium cast iron that agent carries out inoculation is educated, its high hardness martensitic matrix can forcefully support tiny carbide particle,
Carbide comes off from wear surface during avoiding use, improves the high-wearing feature of material.The amorphous inovulant bag of the present invention
7 kinds of specific amorphous inovulants can be subdivided into by including, and various specific amorphous inovulants produce identical to the rich chromium cast iron of each trade mark
Pregnant effect, it differs only in suitable specific according to matrix situation selection in the actual as-cast structure of high-chromium cast iron alloy
Amorphous inovulant, its addition are also that can hold very much grasp to those skilled in the art.
Brief description of the drawings
Accompanying drawing 1 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 1.
Accompanying drawing 2 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 2.
Accompanying drawing 3 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 3.
Accompanying drawing 4 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 4.
Accompanying drawing 5 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 5.
Accompanying drawing 6 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 6.
Accompanying drawing 7 is the rich chromium cast iron metallographic structure 200X compares figures of embodiment 7.
Embodiment
The present invention is further illustrated with reference to embodiment and its accompanying drawing.
Embodiment 1
1 type amorphous inovulant, stocked up by following element and percentage by weight：
21 Re, 44 Si, 2.0 Ti, 0.1 B, 0.6 Cr, surplus Fe；Either：22 Re, 42 Si, 1.0
Ti, 0.05 B, 0.5 Cu, surplus Fe；Either：24 Re, 40 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu are remaining
Measure Fe.
The preparation method of 1 type amorphous inovulant：The above-mentioned each element raw material of 1 type that granularity is 2-8mm is put into vacuum quick quenching
In the water jacketed copper crucible of stove, adjust electrode position, be allowed to the distance between raw alloy particle in crucible for 0.5~
1.5mm, fire door, feed inlet and outlet and vent valve are closed, is filled with protective gas argon gas after being evacuated to 3-4 × 10-3Pa, vacuum is fast
Furnace pressure of quenching is maintained in the range of -0.04~-0.06Pa.Arc current is adjusted after the starting the arc to gradually rise to 650~800A,
Raw alloy in crucible is melted, when the alloy is all fused into liquid, tilts the crucible so that the alloy molten solution passes through
Runner lead at a high speed rotation water cooling molybdenum wheel be allowed to it is very fast solidification form thin ribbon shaped and dished out along molybdenum wheel tangential direction, fall into vacuum
The receiving warehouse of lower portion of furnace body obtains amorphous inovulant, and molybdenum wheel edge linear velocity is 46~55m/ seconds, and molybdenum wheel surface temperature is 10~
12℃.Its average thickness of the amorphous inovulant of thin ribbon shaped is 0.1~0.2mm, and mean breadth is 0.3~0.7mm, and average length is
0.7~0.8mm.
The application method of 1 type amorphous inovulant：By the high chromium castings of BTMCr12-GT (trade mark) that temperature is 1480~1550 DEG C
Iron liquation from operating bag pour into pouring ladle when, with flowing molten iron add 1 type amorphous inovulant and make both mix, 1 type amorphous inovulant
Addition be rich chromium cast iron liquation in pouring ladle 0.02-0.6WT.%.
Figure 1A is the BTMCr12-GT rich chromium cast iron metallographs for being not added with 1 type amorphous inovulant, its matrix relative quantity：
74.45%, interdendritic away from：50.59μm.
Figure 1B is the BTMCr12-GT rich chromium cast iron metallographs for adding 1 type amorphous inovulant (the 1st combination), its matrix phase pair
Amount：81.72%, interdendritic away from：26.58μm.
Figure 1B illustrates that 1 this amorphous of type inovulant can form the crystallization nuclei of a large amount of disperses, adds forming core amount so that brilliant
Grain number amount showed increased, crystallite dimension are substantially refined, and then make rich chromium cast iron liquation in crystallization according to nucleus growth, so as to obtain
Obtain crystal grain refinement and the effect of structure refinement.
Embodiment 2
2 type amorphous inovulants, stocked up by following element and percentage by weight：
24.7 Re, 43 Si, 2.0 Ti, 0.2 B, 0.6 Cr, surplus Fe；Either：26 Re, 41 Si,
1.0 Ti, 0.1 B, 0.5 Cu, surplus Fe；Either：27 Re, 39 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu,
Surplus Fe.
The preparation method and application method of 2 type amorphous inovulants are same as Example 1.
Fig. 2A is the BTMCr12-GT rich chromium cast iron metallographs for being not added with 2 type amorphous inovulants, its matrix relative quantity：
69.52%, interdendritic away from：46.62μm.
Fig. 2 B are the BTMCr12-GT rich chromium cast iron metallographs for adding 2 type amorphous inovulants (the 1st combination), its matrix phase pair
Amount：83.67%, interdendritic away from：23.34μm.
Embodiment 3
3 type amorphous inovulants, stocked up by following element and percentage by weight：
27 Re, 42 Si, 2.0 Ti, 0.3 B, 0.6 Cr, surplus Fe；Either：28 Re, 40 Si, 1.0
Ti, 0.15 B, 0.5 Cu, surplus Fe；Either：30 Re, 38 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu are remaining
Measure Fe.
The preparation method and application method of 3 type amorphous inovulants are same as Example 1.
Fig. 3 A are the BTMCr12-GT rich chromium cast iron metallographs for being not added with 3 type amorphous inovulants, its matrix relative quantity：
76.38%, interdendritic away from：58.44μm.
Fig. 3 B are the BTMCr12-GT rich chromium cast iron metallographs for adding 3 type amorphous inovulants (the 2nd combination), its matrix phase pair
Amount：79.70%, interdendritic away from：34.09μm.
Embodiment 4
4 type amorphous inovulants, stocked up by following element and percentage by weight：
30 Re, 36 Si, 1.0 Ti, 0.4 B, 0.6 Cr, surplus Fe；Either：
31 Re, 38 Si, 0.5 Ti, 0.2 B, 0.5 Cu, surplus Fe；Either：
33 Re, 40 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu, surplus Fe.
The preparation method and application method of 4 type amorphous inovulants are same as Example 1.
Fig. 4 A are the BTMCr12-GT rich chromium cast iron metallographs for being not added with 4 type amorphous inovulants, its matrix relative quantity：
76.50%, interdendritic away from：45.07μm.
Fig. 4 A are the BTMCr12-GT rich chromium cast iron metallographs for adding 4 type amorphous inovulants (the 3rd combination), its matrix phase pair
Amount：82.57%, interdendritic away from：30.23μm.
Embodiment 5
5 type amorphous inovulants, stocked up by following element and percentage by weight：
33 Re, 35 Si, 1.0 Ti, 0.5 B, 0.6 Cr, surplus Fe；Either：
35 Re, 37 Si, 0.5 Ti, 0.25 B, 0.5 Cu, surplus Fe；Either：
36 Re, 39 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu, surplus Fe.
The preparation method of 5 type amorphous inovulants is same as Example 1.
The application method of 5 type amorphous inovulants：5 type amorphous inovulants are laid immediately on behind pouring ladle bottom surface and wrapped from operating
BTMCr15 (trade mark) rich chromium cast iron liquation that temperature is 1480~1550 DEG C is poured into, makes 5 types non-with pouring into for rich chromium cast iron liquation
Brilliant inovulant is mixed, and the addition of 5 type amorphous inovulants is the 0.02-0.6WT.% of rich chromium cast iron liquation.
Fig. 5 A are the BTMCr15 rich chromium cast iron metallographs for being not added with 5 type amorphous inovulants, its matrix relative quantity：
76.92%, interdendritic away from：41.84μm.
Fig. 5 B are the BTMCr15 rich chromium cast iron metallographs for adding 5 type amorphous inovulants (the 1st combination), its matrix relative quantity：
80.58%, interdendritic away from：31.75μm.
Embodiment 6
6 type amorphous inovulants, stocked up by following element and percentage by weight：
36 Re, 33 Si, 1.0 Ti, 0.6 B, 0.6 Cr, surplus Fe；Either：
37 Re, 36 Si, 0.5 Ti, 0.3 B, 0.5 Cu, surplus Fe；Either：
39 Re, 38 Si, 0.05 Ti, 0.2 Cr, 0.1 Cu, surplus Fe.
The preparation method of 6 type amorphous inovulants is same as Example 1, and application method is same as Example 5.
Fig. 6 A are the BTMCr20 rich chromium cast iron metallographs for being not added with 6 type amorphous inovulants, its matrix relative quantity：
71.48%, interdendritic away from：43.87μm.
Fig. 6 B are the BTMCr20 rich chromium cast iron metallographs for adding 6 type amorphous inovulants (the 2nd combination), its matrix relative quantity：
79.80%, interdendritic away from：30.82μm.
Embodiment 7
7 type amorphous inovulants, stocked up by following element and percentage by weight：
39 Re, 32 Si, 1.0 Ti, 0.7 B, 0.6 Cr, surplus Fe；Either：
40 Re, 35 Si, 0.5 Ti, 0.35 B, 0.5 Cu, surplus Fe；Either：
42 Re, 37 Si, 0.01 Ti, 0.2 Cr, 0.1 Cu, surplus Fe.
The preparation method of 7 type amorphous inovulants is same as Example 1, and application method is same as Example 5.
Fig. 7 A are the BTMCr26 rich chromium cast iron metallographs for being not added with 7 type amorphous inovulants, its matrix relative quantity：
70.76%, interdendritic away from：38.64μm.
Fig. 7 B are the BTMCr26 rich chromium cast iron metallographs for adding 7 type amorphous inovulants (the 1st combination), its matrix relative quantity：
84.59%, interdendritic away from：21.52μm.
The accompanying drawing multiplication factor of corresponding each embodiment is 200X above, and aggressive agent is the nitric acid alcohol of concentration 5%.
The rich chromium cast iron liquation of added each model amorphous inovulant of the present invention is implemented to cast according to a conventional method above.
Various embodiments above only relates to a combination and the rich chromium cast iron of a trade mark of a kind of model amorphous inovulant, only
The effect of the model amorphous inovulant is merely illustrative of, but does not limit the present invention.Each model amorphous inovulant of the present invention
There is intimate identical using effect for the rich chromium cast iron of the various trades mark, it is no longer exhaustive as space is limited.
Following table illustrates each embodiment amorphous inovulant grain size number.
| Embodiment | Common inovulant | After adding this amorphous inovulant |
| 1 | 11.5 | 13 |
| 2 | 12 | 13.5 |
| 3 | 12 | 14.0 |
| 4 | 11.5 | 13.5 |
| 5 | 11 | 14 |
| 6 | 11.5 | 14.5 |
| 7 | 11 | 13.5 |
Below by way of list comparative illustration various embodiments above sample and be not added with this inovulant sample normal temperature ballistic work,
The situation of hardness and abrasion loss amount.
Claims (11)
1. the amorphous inovulant for rich chromium cast iron, it is characterised in that be made up of each element of following percentage by weight：21-42's
Re, 32-44 Si, 0.05-2 Ti, 0-0.7 B, 0.2-0.6 Cr, 0.1-0.5 Cu, surplus Fe.
2. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that amorphous inovulant each element
Composition is：21-24 Re, 40-44 Si, 0.05-2.0 Ti, 0-0.1 B, 0.2-0.6 Cr, 0.1-0.5 Cu, surplus
For Fe.
3. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that amorphous inovulant each element
Composition is：24.7-27 Re, 39-43 Si, 0.05-2.0 Ti, 0-0.2 B, 0.2-0.6 Cr, 0.1-0.5 Cu, it is remaining
Measure as Fe.
4. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that amorphous inovulant each element
Composition is：27-30 Re, 38-42 Si, 0.05-2.0 Ti, 0-0.3 B, 0.2-0.6 Cr, 0.1-0.5 Cu, surplus
For Fe.
5. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that described to be used for rich chromium cast iron
Amorphous inovulant each element composition be：30-33 Re, 36-40 Si, 0.05-1.0 Ti, 0-0.4 B, 0.2-0.6
Cr, 0.1-0.5 Cu, surplus Fe.
6. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that described to be used for rich chromium cast iron
Amorphous inovulant each element composition be：33-36 Re, 35-39 Si, 0.05-1.0 Ti, 0-0.5 B, 0.2-0.6
Cr, 0.1-0.5 Cu, surplus Fe.
7. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that described to be used for rich chromium cast iron
Amorphous inovulant each element composition be：36-39 Re, 33-38 Si, 0.05-1.0 Ti, 0-0.6 B, 0.2-0.6
Cr, 0.1-0.5 Cu, surplus Fe.
8. the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that described to be used for rich chromium cast iron
Amorphous inovulant each element composition be：39-42 Re, 32-37 Si, 0.05-1 Ti, 0-0.7 B, 0.2-0.6's
Cr, 0.1-0.5 Cu, surplus Fe.
9. the preparation method of the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that：By granularity
The water jacketed copper crucible of vacuum quick quenching furnace is put into for 2-8mm amorphous inovulant each element raw material, adjusts electrode position, is allowed to and earthenware
The distance between raw alloy particle in crucible is 0.5~1.5mm, closes fire door, feed inlet and outlet and vent valve, is evacuated to 3-
4×10-3Argon gas is filled with after Pa, vacuum quick quenching furnace pressure is maintained at 0.04~-0.06Pa, and arc current is adjusted after the starting the arc and is gradually risen
To 650~800A, the raw alloy in crucible is melted, when the alloy is all fused into liquid, the crucible is tilted and causes this
The water cooling molybdenum wheel that alloy molten solution leads to rotation at a high speed by runner is allowed to very fast solidification and forms thin ribbon shaped and along molybdenum wheel tangential direction
Dish out, the receiving warehouse for falling into vacuum furnace body bottom obtains amorphous inovulant, and molybdenum wheel edge linear velocity is 46~55m/ seconds, molybdenum wheel table
Face temperature is 10~12 DEG C.
10. the preparation method of the amorphous inovulant according to claim 9 for rich chromium cast iron, it is characterised in that：It is described
Thin ribbon shaped amorphous inovulant, its average thickness 0.1~0.2mm, 0.3~0.7mm of mean breadth, 0.7~0.8mm of average length.
11. the application method of the amorphous inovulant according to claim 1 for rich chromium cast iron, it is characterised in that：Pouring
Before note, by rich chromium cast iron liquation from operating when bag pours into pouring ladle with flowing molten iron addition amorphous inovulant；It is or, amorphous inovulant is straight
Connect and be laid on pouring ladle bottom surface, rich chromium cast iron liquation mixes with rich chromium cast iron liquation when pouring into pouring ladle from operating bag, and amorphous is pregnant
The addition for educating agent is the 0.02-0.6wt.% of pouring ladle rich chromium cast iron liquation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025152.2A CN106435335B (en) | 2016-11-17 | 2016-11-17 | Amorphous inovulant for rich chromium cast iron and preparation method thereof and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025152.2A CN106435335B (en) | 2016-11-17 | 2016-11-17 | Amorphous inovulant for rich chromium cast iron and preparation method thereof and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106435335A CN106435335A (en) | 2017-02-22 |
| CN106435335B true CN106435335B (en) | 2018-03-30 |
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| CN109972026B (en) * | 2019-04-15 | 2020-11-27 | 南京浦江合金材料股份有限公司 | Preparation process for preparing silicon-strontium inoculant by utilizing dam type punching method |
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| CN101580913B (en) * | 2009-04-02 | 2011-03-16 | 天津市立鑫晟精细铸造有限公司 | High-chromium cast iron composite inoculant, preparation method and application thereof |
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Effective date of registration: 20220930 Address after: 301600 Duliu railway station south, liangwangzhuang Township, Jinghai District, Tianjin Patentee after: Tianjin Lixin Sheng Intelligent Manufacturing Co.,Ltd. Address before: 300384 Room 410, Block I, Haitai Green Industry Base, No. 6, Haitai Development Road 6, Huayuan Industrial Park, Tianjin Patentee before: Shi Weidong |