CN105803322B - A kind of potassium steel and preparation method thereof - Google Patents

A kind of potassium steel and preparation method thereof Download PDF

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Publication number
CN105803322B
CN105803322B CN201610206870.3A CN201610206870A CN105803322B CN 105803322 B CN105803322 B CN 105803322B CN 201610206870 A CN201610206870 A CN 201610206870A CN 105803322 B CN105803322 B CN 105803322B
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potassium steel
steel
powder
idiosome
potassium
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CN105803322A (en
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郑开宏
董晓蓉
王海艳
王秀连
宋东福
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Institute of New Materials of Guangdong Academy of Sciences
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Guangdong Institute of Materials and Processing
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12Both compacting and sintering
    • B22F3/16Both compacting and sintering in successive or repeated steps
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium

Abstract

A kind of potassium steel, is 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 are Fe and inevitable impurity.Potassium steel preparation method comprises the steps of:According to component requirements, carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron are uniformly mixed into tungstenic titanium potassium steel alloyed powder, with cold isostatic pressing process, keep preparing potassium steel idiosome in 20 ~ 40 minutes under 120 ~ 180MPa of pressure;Potassium steel idiosome sinters under 1300 ~ 1400 DEG C, 1 ~ 10Pa of vacuum, and cooling obtains the potassium steel.The invention provides good potassium steel of a kind of obdurability and wearability and preparation method thereof.

Description

A kind of potassium steel and preparation method thereof
Technical field
The present invention relates to a kind of potassium steel and preparation method thereof.
Background technology
Existing more than the 100 years developing history of potassium steel, because it has high toughness, plasticity, so as to pacify with high use Quan Xing, formed the conventional high manganese steel material such as Mn13, Mn18, Mn25 series, be widely used in tup, bar, liner plate Jaw plate and The components such as top fuller.Due to potassium steel self character, oxygen content height is also easy to produce oxide and is mingled with fusion process;Crystal grain is thick simultaneously Greatly, toughness is low, and yield strength is low, and initial hardness is low.In thump abrasive wear operating mode, surpass with the instantaneous temperature of material impact Cross 1000 DEG C and require that it has obdurability and high rigidity.
CN103789656A is disclosed a kind of tungstenic-high manganese wear-resistant steel of chromium-vanadium and preparation method thereof and given up with steel scrap, high manganese Material, carburant, ferromanganese, nitrided ferromanganese, ferrotungsten, ferrochrome, vanadium iron and metallic aluminium are raw material, melting molten steel, will contain rare earth, titanium, niobium, In molten steel in the alloy wire insertion ladle of the microalloy elements such as boron, potassium, magnesium, the molten steel after processing is poured into casting mold, you can To the high manganese wear-resistant steel.Vanadium in this abrasion-resistant stee mainly exists with solution, limited to refinement potassium steel.Tungsten forms WC Polygonal form, potassium steel toughness is reduced, it is 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%th, P≤0.04%, S≤0.04%, surplus Fe.To being heat-treated insulation three times, cast(ing) surface is after water-tenacity treatment, surface meeting There is segmentation crack, in use, surface checking line extends to cast-internal and obdurability is low.
CN102888564A discloses a kind of ultra-high manganese steel and preparation method thereof.Carried out again after the patent casting water-tenacity treatment 250 ~ 350 DEG C of Ageing Treatments, occur in Ageing Treatment Cr carbide increase fragility, in the case where impact operating mode easily peeling and it is resistance to Mill property is low.
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 Fe.The potassium steel For Si lower limits 0.2%, silicone content is low, and steel oxygen content in water can be caused high and a large amount of field trashes occur, obdurability, wearability are low.
The content of the invention
The purpose of the present invention is to propose to the good potassium steel of a kind of obdurability and wearability.
Another object of the present invention is to propose a kind of preparation method of the potassium steel.
The composition and weight/mass percentage composition of potassium steel of the present invention 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%, surplus are Fe and inevitable impurity.
The weight/mass percentage composition of preferable potassium steel is Mn:12~14%.
The weight/mass percentage composition of preferable potassium steel is Mn:16~18%.
The weight/mass percentage composition of preferable potassium steel is Mn:20~23%.
Potassium steel preparation method comprises the steps of:
1)According to component requirements, by carbon dust, electrolytic manganese powder, high carbon ferromanganese powder and high-carbon chromium iron be uniformly mixed into tungstenic- Titanium potassium steel alloyed powder, with cold isostatic pressing process, under 120 ~ 180MPa of pressure being incubated 20 ~ 40 minutes prepares potassium steel idiosome;
2)Potassium steel idiosome sinters under 1300 ~ 1400 DEG C, 1 ~ 10Pa of vacuum, and cooling obtains the potassium steel.
Present invention addition Ti preferentially forms TiC in potassium steel process of setting and refines crystalline substance as potassium steel crystallization nuclei Grain.The carbide crystal core that TiC is alternatively arranged as W forms (Ti, W) C, eliminates W carbide cerioid form, TiC, (Ti, W) C improves wearability as in Hard Inclusion Dispersed precipitate potassium steel matrix.Potassium steel in thump abrasive wear operating mode with material Impact wear instantaneous temperature occur wearability more than 1000 DEG C and be greatly reduced, add W to be solid-solution in matrix, potassium steel can be improved Elevated temperature strength, make up the wearability caused by potassium steel in use instantaneous temperature height and decline.
1080 ~ 1100 DEG C of heat treatment temperature, and suitable soaking time is used, it is uniform to be advantageous to composition, and eliminates as cast condition Cr and Mn carbide.Quenched in 10% NaOH solution, and solution temperature is not higher than 40 DEG C, prevents potassium steel water-tenacity treatment During secondary carbide precipitation, be advantageous to improve potassium steel toughness.
By taking the purifying processing of grain refining, homogenization, melt, and high rigidity Hard Inclusion carbide is obtained in matrix, Potassium steel is tough, and wearability greatly improves.
Embodiment
Embodiment 1
The composition and weight/mass percentage composition of potassium steel:C:1.3%、Mn:13.5%、Cr:1.8%、Si:0.65%、Ti:2.2%、 W:4.4%、Al:0.035%th, P≤0.04%, surplus are 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 alloy Powder, potassium steel idiosome being prepared with cold isostatic pressing process, is kept for 20 ~ 40 minutes under pressure 130MPa, idiosome sinters in vacuum sintering furnace, 1350 DEG C, vacuum 9Pa of sintering temperature, the potassium steel of the present invention is obtained after cooling.
Heat treatment method:Casting rises to 650 DEG C with 40 DEG C/h programming rate, is incubated 2.8 hours;Again with 60 DEG C/h liter Warm speed rises to 1080 DEG C, and soaking time is incubated 1 hour by casting thickness per 20mm, then adds 2 hours, by heating casting 10% The NaOH aqueous solution in cool down, 35 DEG C of solution temperature.
It is upper sample with Cr25, with the present embodiment material and its contrast using the method for testing of dynamic impulsion abrasive wear Tungstenic titanium potassium steel is not lower sample to material composition of the same race.Ballistic work:5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotation Speed:70 revs/min, upper sample frequency of impact:57 beats/min, test period:30 minutes.The above-mentioned experiment of repetition 3 times, counts two kinds The total weight loss of material is 0.1208g, the potassium steel 0.2023g of composition of the same race not tungstenic titanium.
Embodiment 2
The composition of potassium steel forms percentage composition:C:1.4%、Mn:18%、Cr:2.2%、Si:0.7%、Ti:2.3%、W: 4.6%、Al:0.04%th, P≤0.04%, surplus are 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 alloy Powder, potassium steel idiosome is prepared with cold isostatic pressing process, pressure 150MPa is kept for 20 ~ 40 minutes;Idiosome sinters in vacuum sintering furnace, burns 1360 DEG C, vacuum 7Pa of junction temperature, the potassium steel of the present invention is obtained after cooling.
Heat treatment method:Casting rises to 650 DEG C with 40 DEG C/h programming rate, is incubated 2.8 hours;Again with 60 DEG C/h liter Warm speed rises to 1095 DEG C, and insulation, soaking time is incubated 1 hour per 20mm by casting thickness and added 2 hours again, and heating casting is existed Cooled down in the 10% NaOH aqueous solution, 30 DEG C of solution temperature.
It is upper sample with Cr25, with the present embodiment material and its contrast using the method for testing of dynamic impulsion abrasive wear Tungstenic titanium potassium steel is not lower sample to material composition of the same race.Ballistic work:5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotation Speed:70 revs/min, upper sample frequency of impact:57 beats/min, test period:30 minutes.The above-mentioned experiment of repetition 3 times, counts two kinds The total weight loss of material is 0.1160g, the potassium steel 0.2019g of composition of the same race not tungstenic titanium.
Embodiment 3
Potassium steel composition forms percentage composition:C:1.5%、Mn:21%、Cr:2.4%、Si:0.8%、Ti:2.4%、W:4.8%、 Al:0.045%th, P≤0.04%, surplus are 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 alloy Powder, potassium steel idiosome is prepared with cold isostatic pressing process, pressure 170MPa is kept for 20 ~ 40 minutes;Idiosome sinters in vacuum sintering furnace, burns 1360 DEG C, vacuum 5Pa of junction temperature, the potassium steel of the present invention is obtained after cooling.
Heat treatment method:Casting rises to 650 DEG C with 40 DEG C/h programming rate, is incubated 2.8 hours;Again with 60 DEG C/h liter Warm speed rises to 1100 DEG C, and insulation, soaking time is incubated 1 hour per 20mm by casting thickness and added 2 hours again, and heating casting is existed Cooled down in the 10% NaOH aqueous solution, 25 DEG C of solution temperature.
It is upper sample with Cr25, with the present embodiment material and its contrast using the method for testing of dynamic impulsion abrasive wear Tungstenic titanium potassium steel is not lower sample to material composition of the same race.Ballistic work:5J/cm2, 180 mesh quartz sands are abrasive material, lower sample rotation Speed:70 revs/min, upper sample frequency of impact:57 beats/min, test period:30 minutes.The above-mentioned experiment of repetition 3 times, counts two kinds The total weight loss of material is 0.1160g, the potassium steel 0.2390g of composition of the same race not tungstenic titanium.

Claims (5)

1. a kind of 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%th, Cr:1.5~2.5%, Ti:2.0~2.5%, W:4.0~5.0%, P≤0.04%, surplus is for Fe and inevitably Impurity;
The preparation method of the potassium steel comprises 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 alloy Powder, with cold isostatic pressing process, keep preparing potassium steel idiosome in 20~40 minutes under 120~180MP of pressure;
2) potassium steel idiosome sinters under 1300~1400 DEG C, 1~10Pa of vacuum, and cooling obtains the potassium steel.
2. potassium steel according to claim 1, it is characterised in that composition and weight/mass percentage composition are Mn:12~14%.
3. potassium steel according to claim 1, it is characterised in that composition and weight/mass percentage composition are Mn:16~18%.
4. potassium steel 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 alloy Powder, with cold isostatic pressing process, keep preparing potassium steel idiosome in 20~40 minutes under 120~180MP of pressure;
2) potassium steel idiosome sinters under 1300~1400 DEG C, 1~10Pa of vacuum, and cooling obtains the potassium steel.
CN201610206870.3A 2016-04-06 2016-04-06 A kind of potassium steel and preparation method thereof Active CN105803322B (en)

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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

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JPS62238353A (en) * 1986-04-09 1987-10-19 Nippon Kokan Kk <Nkk> High-manganese austenitic steel excellent in strength at high temperature
CN1136086A (en) * 1996-01-25 1996-11-20 西安电力机械厂 Wearproof alloy with high manganese content
CN1804092A (en) * 2006-01-11 2006-07-19 燕山大学 Tungsten-containing wear-resistant austenitic manganese steel
KR100985286B1 (en) * 2007-12-28 2010-10-04 주식회사 포스코 High Manganese Steel Having High Strength and Excellent Delayed Fracture Resistance and Manufacturing Method Thereof
CN101250675A (en) * 2008-04-01 2008-08-27 暨南大学 High manganese steel containing tungsten
CN102528040B (en) * 2012-02-24 2013-11-13 王兴民 Process method for manufacturing balance weight for compressor by powder metallurgy
CN103451546B (en) * 2012-12-24 2016-06-15 河南理工大学 A kind of high abrasion potassium steel and preparation method thereof

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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

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Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District

Patentee before: Institute of materials and processing, Guangdong Academy of Sciences