CN105803322A - High-manganese steel and preparation method thereof - Google Patents
High-manganese steel and preparation method thereof Download PDFInfo
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- CN105803322A CN105803322A CN201610206870.3A CN201610206870A CN105803322A CN 105803322 A CN105803322 A CN 105803322A CN 201610206870 A CN201610206870 A CN 201610206870A CN 105803322 A CN105803322 A CN 105803322A
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- potassium steel
- manganese steel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides high-manganese steel. The high-manganese steel is prepared from, by mass, 0.9%-1.6% of C, 12%-26% of Mn, 1.5%-2.5% of Cr, 2.0%-2.5% of Ti, 4.0%-5.0% of W, 0-0.04% of P and the balance Fe and inevitable impurities. A preparation method of the high-manganese steel comprises the following steps that carbon powder, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon ferro-chrome powder are evenly mixed into high-manganese steel alloy powder containing tungsten and titanium according to the component requirement, and mixing is maintained for 20-40 min at the pressure of 120-180 MPa through a cold isostatic pressing method, so that a high-manganese steel billet is prepared; and the high-manganese steel billet is sintered at the temperature of 1300-1400 DEG C under the condition that the vacuum degree is 1-10 Pa, cooling is conducted, and then the high-manganese steel is obtained. The high-manganese steel which is high in tightness and good in abrasion resistance and the preparation method of the high-manganese steel are provided.
Description
Technical field
The present invention relates to a kind of potassium steel and preparation method thereof.
Background technology
The potassium steel developing history of existing more than 100 year, because it has high toughness, plasticity, thus there is high safety in utilization, form the conventional high manganese steel material such as Mn13, Mn18, Mn25 series, be widely used in the components such as tup, bar, liner plate Hubei Province plate and top fuller.Due to potassium steel self character, in fusion process, oxygen content height is easily generated oxide and is mingled with；Coarse grains simultaneously, toughness is low, and yield strength is low, and initial hardness is low.In thump abrasive wear operating mode, require that it has obdurability and high rigidity with the instantaneous temperature of material impact more than 1000 DEG C.
CN103789656A discloses a kind of tungstenic-chromium-vanadium height manganese wear-resistant steel and preparation method thereof with steel scrap, high manganese waste material, carburant, ferromanganese, nitrided ferromanganese, ferrotungsten, ferrochrome, vanadium iron and metallic aluminium as raw material, melting molten steel, alloy wire containing microalloy elements such as rare earth, titanium, niobium, boron, potassium, magnesium is inserted in the molten steel in ladle, molten steel after processing pours into casting mold, i.e. can get described high manganese wear-resistant steel.Vanadium in this abrasion-resistant stee mainly exists with solution, limited to refinement potassium steel.It is polygonal form that tungsten forms WC, reduces potassium steel toughness, unfavorable to wearability.
CN102605268A discloses a kind of ultra-high manganese steel and preparation method thereof.Its composition and mass percent C:1.0 ~ 1.1%, Mn:16 ~ 20%, Si:0.4 ~ 1.2%, Cr:1.0 ~ 3.0%, Mo:0.2 ~ 1.0%, B:0.003 ~ 0.005%, Ti:0.1 ~ 0.2%, P≤0.04%, S≤0.04%, surplus is Fe.To three heat treatment insulations, cast(ing) surface is after water-tenacity treatment, and surface there will be segmentation crack, and in use, obdurability is low to cast-internal extension for surface checking stricture of vagina.
CN102888564A discloses a kind of ultra-high manganese steel and preparation method thereof.Carrying out 250 ~ 350 DEG C of Ageing Treatment again after this patent foundry goods water-tenacity treatment, the carbide that there will be Cr when Ageing Treatment increases fragility, easily peels off and wearability is low under impact operating mode.
CN102978529A discloses a kind of potassium steel, composition and mass percent C:0.7 ~ 1.1%,
Si:0.2 ~ 0.5%, Mn:12 ~ 16%, Cr:1.2 ~ 2.5%, P≤0.03%, S≤0.03%, surplus is Fe.This potassium steel Si lower limit is 0.2%, and silicone content is low, steel oxygen content in water can be caused high and a large amount of field trash occur, and obdurability, wearability are low.
Summary of the invention
The purpose of the present invention is to propose to a kind of obdurability and the good potassium steel of wearability.
Another object of the present invention is the preparation method proposing a kind of described potassium steel.
The composition of potassium steel of the present invention and weight/mass percentage composition are C:0.9 ~ 1.6%, Mn:12 ~ 26%, Cr:1.5 ~ 2.5%, Ti:2.0 ~ 2.5%, W:4.0 ~ 5.0%, P≤0.04%, and surplus is Fe and inevitable impurity.
Preferably the weight/mass percentage composition of potassium steel is Mn:12 ~ 14%.
Preferably the weight/mass percentage composition of potassium steel is Mn:16 ~ 18%.
Preferably the weight/mass percentage composition of potassium steel is Mn:20 ~ 23%.
Potassium steel preparation method comprises the steps of:
1) according to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron being uniformly mixed into tungstenic-titanium potassium steel alloyed powder, by cold isostatic pressing process, under pressure 120 ~ 180MPa, insulation prepares potassium steel idiosome in 20 ~ 40 minutes；
2) potassium steel idiosome is at 1300 ~ 1400 DEG C, sinters under vacuum 1 ~ 10Pa, and cooling obtains described potassium steel.
The present invention add Ti preferentially form in potassium steel process of setting TiC as potassium steel crystallization nuclei crystal grain thinning.TiC is alternatively arranged as the carbide crystal core of W and forms (Ti, W) C, eliminates the carbide cerioid form of W, and TiC, (Ti, W) C, as in Hard Inclusion Dispersed precipitate potassium steel matrix, improve wearability.More than 1000 DEG C, potassium steel impact wear instantaneous temperature with material in thump abrasive wear operating mode occurs that wearability is greatly reduced, add W to be solid-solution in matrix, potassium steel elevated temperature strength can be improved, make up the wearability caused owing to potassium steel in use instantaneous temperature is high and decline.
Heat treatment temperature 1080 ~ 1100 DEG C, and use suitable temperature retention time, beneficially composition uniform, and eliminate the carbide of as cast condition Cr and Mn.The NaOH solution of 10% quenches, and solution temperature is not higher than 40 DEG C, prevents secondary carbide precipitation during potassium steel water-tenacity treatment, be conducive to improving potassium steel toughness.
By taking the purifying process of grain refining, homogenization, melt, and obtaining high rigidity Hard Inclusion carbide in matrix, potassium steel is tough, and wearability is greatly improved.
Detailed description of the invention
Embodiment 1
The composition of potassium steel and weight/mass percentage composition: C:1.3%, Mn:13.5%, Cr:1.8%, Si:0.65%, Ti:2.2%, W:4.4%, Al:0.035%, P≤0.04%, surplus is Fe and inevitable impurity.
According to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron are uniformly blended potassium steel alloyed powder, potassium steel idiosome is prepared by cold isostatic pressing process, keep 20 ~ 40 minutes under pressure 130MPa, idiosome sinters at vacuum sintering furnace, sintering temperature 1350 DEG C, vacuum 9Pa, i.e. obtain the potassium steel of the present invention after cooling.
Heat treatment method: foundry goods rises to 650 DEG C with the programming rate of 40 DEG C/h, is incubated 2.8 hours；Rising to 1080 DEG C with the programming rate of 60 DEG C/h again, temperature retention time is pressed the every 20mm of casting thickness and is incubated 1 hour, then adds 2 hours, is cooled down by heating foundry goods, solution temperature 35 DEG C in the NaOH aqueous solution of 10%.
Use the method for testing of dynamic impulsion abrasive wear, be upper sample with Cr25, be lower sample with the present embodiment material and contrast material thereof composition of the same race not tungstenic titanium potassium steel.Ballistic work: 5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotary speed: 70 revs/min, upper sample frequency of impact: 57 beats/min, test period: 30 minutes.Repeating above-mentioned experiment 3 times, total weightlessness of statistics bi-material is 0.1208g, the potassium steel 0.2023g of composition of the same race not tungstenic titanium.
Embodiment 2
The composition composition percentage composition of potassium steel: C:1.4%, Mn:18%, Cr:2.2%, Si:0.7%, Ti:2.3%, W:4.6%, Al:0.04%, P≤0.04%, surplus is Fe and inevitable impurity.
According to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron being uniformly blended potassium steel alloyed powder, prepare potassium steel idiosome by cold isostatic pressing process, pressure 150MPa keeps 20 ~ 40 minutes；Idiosome sinters at vacuum sintering furnace, sintering temperature 1360 DEG C, and vacuum 7Pa i.e. obtains the potassium steel of the present invention after cooling.
Heat treatment method: foundry goods rises to 650 DEG C with the programming rate of 40 DEG C/h, is incubated 2.8 hours；Rising to 1095 DEG C with the programming rate of 60 DEG C/h again, insulation, temperature retention time is added 2 hours by casting thickness every 20mm insulation for 1 hour again, is cooled down by heating foundry goods, solution temperature 30 DEG C in the NaOH aqueous solution of 10%.
Use the method for testing of dynamic impulsion abrasive wear, be upper sample with Cr25, be lower sample with the present embodiment material and contrast material thereof composition of the same race not tungstenic titanium potassium steel.Ballistic work: 5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotary speed: 70 revs/min, upper sample frequency of impact: 57 beats/min, test period: 30 minutes.Repeating above-mentioned experiment 3 times, total weightlessness of statistics bi-material is 0.1160g, the potassium steel 0.2019g of composition of the same race not tungstenic titanium.
Embodiment 3
Potassium steel composition composition percentage composition: C:1.5%, Mn:21%, Cr:2.4%, Si:0.8%, Ti:2.4%, W:4.8%, Al:0.045%, P≤0.04%, surplus is Fe and inevitable impurity.
According to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron being uniformly blended potassium steel alloyed powder, prepare potassium steel idiosome by cold isostatic pressing process, pressure 170MPa keeps 20 ~ 40 minutes；Idiosome sinters at vacuum sintering furnace, sintering temperature 1360 DEG C, and vacuum 5Pa i.e. obtains the potassium steel of the present invention after cooling.
Heat treatment method: foundry goods rises to 650 DEG C with the programming rate of 40 DEG C/h, is incubated 2.8 hours；Rising to 1100 DEG C with the programming rate of 60 DEG C/h again, insulation, temperature retention time is added 2 hours by casting thickness every 20mm insulation for 1 hour again, is cooled down by heating foundry goods, solution temperature 25 DEG C in the NaOH aqueous solution of 10%.
Use the method for testing of dynamic impulsion abrasive wear, be upper sample with Cr25, be lower sample with the present embodiment material and contrast material thereof composition of the same race not tungstenic titanium potassium steel.Ballistic work: 5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotary speed: 70 revs/min, upper sample frequency of impact: 57 beats/min, test period: 30 minutes.Repeating above-mentioned experiment 3 times, total weightlessness of statistics bi-material is 0.1160g, the potassium steel 0.2390g of composition of the same race not tungstenic titanium.
Claims (5)
1. a potassium steel, it is characterised in that be made up of following component and weight/mass percentage composition: C:0.9 ~ 1.6%, Mn:12 ~ 26%, Cr:1.5 ~ 2.5%, Ti:2.0 ~ 2.5%, W:4.0 ~ 5.0%, P≤0.04%, surplus is Fe and inevitable impurity.
Potassium steel the most according to claim 1, it is characterised in that composition and weight/mass percentage composition are Mn:12 ~ 14%.
Potassium steel the most according to claim 1, it is characterised in that composition and weight/mass percentage composition are Mn:16 ~ 18%.
Potassium steel the most according to claim 1, it is characterised in that composition and weight/mass percentage composition are Mn:20 ~ 23%.
5. the preparation method of potassium steel as claimed in claim 1, it is characterised in that comprise the steps of:
1) according to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron are uniformly mixed into potassium steel alloyed powder, by cold isostatic pressing process, keep preparing potassium steel idiosome in 20 ~ 40 minutes under pressure 120 ~ 180MP；
2) potassium steel idiosome is at 1300 ~ 1400 DEG C, sinters under vacuum 1 ~ 10Pa, and cooling obtains described potassium steel.
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| CN201610206870.3A CN105803322B (en) | 2016-04-06 | 2016-04-06 | A kind of potassium steel and preparation method thereof |
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| CN201610206870.3A CN105803322B (en) | 2016-04-06 | 2016-04-06 | A kind of potassium steel and preparation method thereof |
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| CN105803322A true CN105803322A (en) | 2016-07-27 |
| CN105803322B CN105803322B (en) | 2017-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118272A (en) * | 2020-02-12 | 2020-05-08 | 广东省材料与加工研究所 | High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof |
| CN114000039A (en) * | 2021-11-04 | 2022-02-01 | 江西钨业控股集团有限公司 | Preparation method of wear-resistant alloy material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118272A (en) * | 2020-02-12 | 2020-05-08 | 广东省材料与加工研究所 | High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof |
| CN111118272B (en) * | 2020-02-12 | 2022-01-04 | 广东省科学院新材料研究所 | High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof |
| CN114000039A (en) * | 2021-11-04 | 2022-02-01 | 江西钨业控股集团有限公司 | Preparation method of wear-resistant alloy material |
| CN114000039B (en) * | 2021-11-04 | 2022-08-09 | 江西钨业控股集团有限公司 | Preparation method of wear-resistant alloy material |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Institute Of Materials And Processing |
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Effective date of registration: 20220119 Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of materials and processing, Guangdong Academy of Sciences |