CN105779889B - A kind of tungstenic titanium potassium steel and preparation method thereof - Google Patents

A kind of tungstenic titanium potassium steel and preparation method thereof Download PDF

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CN105779889B
CN105779889B CN201610209608.4A CN201610209608A CN105779889B CN 105779889 B CN105779889 B CN 105779889B CN 201610209608 A CN201610209608 A CN 201610209608A CN 105779889 B CN105779889 B CN 105779889B
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steel
casting
composition
temperature
potassium steel
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CN105779889A (en
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郑开宏
王海艳
王秀连
王娟
王顺成
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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
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/08Shaking, vibrating, or turning of moulds
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60Aqueous agents
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/04Making ferrous alloys by melting
    • C22C33/06Making ferrous alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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

Abstract

A kind of tungstenic titanium potassium steel, its composition and weight/mass percentage composition are C:0.9~1.6%、Mn:11~26%、Cr:1.5~2.5%、Si:0.6~0.7%、Ti:0.1~2.5%、W:0.2~5.0%、Al:0.03 ~ 0.05%, P≤0.04%, surplus are Fe and inevitable impurity.Preparation method comprises the steps of:By the melting at 80 ~ 100Pa of vacuum, 1480 ~ 1500 DEG C of smelting temperature of steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and medium carbon ferrochrome;Molten steel temperature is poured into casting mold when being down to 1390 ~ 1410 DEG C, and molten steel is full of casting mold die cavity, is solidified, cooling;Casting is risen to 650 DEG C with 70 DEG C/h of < programming rate, insulation 2 ~ 3;1080 ~ 1110 DEG C are risen to 100 DEG C/h of < programming rate again, be incubated 1 hour per 20mm by casting thickness adds 2 hours again, and heating casting is less than into 40 DEG C in temperature, cooled down in the 10% NaOH aqueous solution.The present invention provides a kind of obdurability and the good tungstenic titanium potassium steel of wearability and preparation method thereof.

Description

A kind of tungstenic titanium potassium steel and preparation method thereof
Technical field
The present invention relates to a kind of potassium steel and preparation method thereof, more particularly to a kind of tungstenic titanium potassium steel and its preparation side Method.
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 is high in fusion process, is also easy to produce oxide and is mingled with;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 discloses a kind of tungstenic-high manganese wear-resistant steel of chromium-vanadium and preparation method thereof.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.Carry out 250 after the casting water-tenacity treatment again ~ 350 DEG C of Ageing Treatments, Cr carbide increase fragility occurs in Ageing Treatment, is easily peeled off and wearability in the case where impacting operating mode It 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.Potassium steel Si lower limits 0.2%, obdurability, Wearability is low.
The content of the invention
The purpose of the present invention is to propose to the good tungstenic titanium 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 mass percent of tungstenic titanium potassium steel of the present invention are C:0.9~1.6%、Mn:11~26%、Cr:1.5 ~2.5%、Si:0.6~0.7%、Ti:0.1~2.5%、W:0.2~5.0%、Al:0.03 ~ 0.05%, P≤0.04%, surplus is for Fe and not Evitable impurity.
Potassium steel preparation method comprises the steps of:
1)By potassium steel composition and weight/mass percentage composition by steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and middle carbon chromium Iron melting at 80 ~ 100Pa of vacuum, 1480 ~ 1500 DEG C of smelting temperature;
2)Molten steel temperature is poured into casting mold when being down to 1390 ~ 1410 DEG C, and molten steel is full of casting mold die cavity, is solidified, and cooling, is produced To tungstenic titanium high manganese steel casting of the present invention;
3)Casting is risen to 650 DEG C with 70 DEG C/h of < programming rate, insulation 2 ~ 3;Again with 100 DEG C/h of < programming rate 1080 ~ 1110 DEG C are risen to, be incubated 1 hour per 20mm by casting thickness adds 2 hours again, and heating casting is less than into 40 DEG C in temperature, Cooled down in the 10% NaOH aqueous solution.
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.
The present invention is to improve potassium steel metallurgical quality using vacuum intermediate-frequency stove melting is used;With powder metallurgy process system It is standby to be sintered using vacuum sintering furnace, prevent potassium steel from aoxidizing.The present invention is vibrated using outfield, smashes as cast condition dendrite, is obtained more More crystallization nuclei and crystal grain thinning, accelerate atom long-range, short-range diffusion uniform, even tissue, especially Ti, W and Fe, Mn atoms Density difference is big, is vibrated by outfield to make it be more evenly distributed.
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 tungstenic titanium potassium steel:C:1.25%、Mn:13.5%、Cr:1.8%、Si:0.65%、 Ti:0.4%、W:0.8%、Al:0.035%th, P≤0.04%, surplus are Fe and inevitable impurity.
1)By potassium steel composition and weight/mass percentage composition requirement by steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and in Carbon ferrochrome is in a vacuum in frequency induction furnace, vacuum 95Pa, melting at 1450 DEG C of smelting temperature;
2)Poured into when molten steel temperature is down to 1395 DEG C in casting mold, molten steel is full of running gate system, solidification, time of vibration 5min, cooling, that is, obtain tungstenic titanium high manganese steel casting of the present invention;
3)Casting is risen to 650 DEG C with 65 DEG C/h programming rate, is incubated 2.5 hours;Again with 90 DEG C/h programming rate 1090 DEG C are risen to, 1 hour is incubated again plus 2 hours per 20mm by casting thickness, heating casting is less than 38 DEG C in temperature, 10% Cooled down in the NaOH aqueous solution.
The obdurability and wearability of the embodiment 1 of table 1
* the method for testing of dynamic impulsion abrasive wear is used, with composition of the same race with the present embodiment but the not Gao Meng of tungstenic titanium Steel wear extent is used as with reference to radix, and the wear extent of the present embodiment is in contrast, and the more big then wearability of numeral is higher.
Tungstenic titanium, other compositions and preparation method be not same as Example 1 by *.
Embodiment 2
The composition and weight/mass percentage composition of tungstenic titanium potassium steel:C:1.25%、Mn:18.0%、Cr:2.2%、Si:0.7%、Ti: 1.2%、W:2.4%、Al:0.04%th, P≤0.04%, surplus are Fe and inevitable impurity.
1)By potassium steel composition and weight/mass percentage composition requirement by steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and in Carbon ferrochrome is in a vacuum in frequency induction furnace, vacuum 90Pa, melting at 1460 DEG C of smelting temperature;
2)Poured into when molten steel temperature is down to 1400 DEG C in casting mold, molten steel is full of running gate system, solidification, time of vibration 7min, cooling, that is, obtain tungstenic titanium high manganese steel casting of the present invention;
3)Casting is risen to 650 DEG C with 50 DEG C/h programming rate, is incubated 2.5 hours;Again with 80 DEG C/h programming rate 1095 DEG C are risen to, 1 hour is incubated again plus 2 hours per 20mm by casting thickness, heating casting is less than 36 DEG C in temperature, 10% Cooled down in the NaOH aqueous solution.
The obdurability and wearability of the embodiment 2 of table 2
* the method for testing of dynamic impulsion abrasive wear is used, with composition of the same race with the present embodiment but the not Gao Meng of tungstenic titanium Steel wear extent is used as with reference to radix, and the wear extent of the present embodiment is in contrast, and the more big then wearability of numeral is higher.
Tungstenic titanium, other compositions and preparation method be not same as Example 2 by *.
Embodiment 3
The composition and weight/mass percentage composition of tungstenic titanium potassium steel:C:1.25%、Mn:21.0%、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.
1)By potassium steel composition and weight/mass percentage composition requirement by steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and in Carbon ferrochrome is in a vacuum in frequency induction furnace, vacuum 85Pa, 1470 DEG C of meltings of smelting temperature;
2)Poured into when molten steel temperature is down to 1405 DEG C in casting mold, molten steel is full of running gate system, solidification, time of vibration 9min, cooling, that is, obtain tungstenic titanium high manganese steel casting of the present invention.
3)Casting is risen to 650 DEG C with 40 DEG C/h programming rate, is incubated 2.8 hours;Again with 60 DEG C/h programming rate 1095 DEG C are risen to, 1 hour is incubated again plus 2 hours per 20mm by casting thickness, heating casting is less than 35 DEG C in temperature, 10% Cooled down in the NaOH aqueous solution.
The obdurability and wearability of the embodiment 3 of table 3
* the method for testing of dynamic impulsion abrasive wear is used, with composition of the same race with the present embodiment but the not Gao Meng of tungstenic titanium Steel wear extent is used as with reference to radix, and the wear extent of the present embodiment is in contrast, and the more big then wearability of numeral is higher.
Tungstenic titanium, other compositions and preparation method be not same as Example 3 by *.

Claims (5)

  1. A kind of 1. tungstenic titanium potassium steel, it is characterized in that composition and weight/mass percentage composition are C:0.9~1.6%、Mn:11~26%、Cr: 1.5~2.5%、Si:0.6~0.7%、Ti:1.2~2.5%、W:2.4~5.0%、Al:0.03 ~ 0.05%, P≤0.04%, surplus be Fe and Inevitable impurity;
    Wherein, the preparation method of the tungstenic titanium potassium steel comprises the steps of:
    1)Steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and medium carbon ferrochrome are existed by potassium steel composition and weight/mass percentage composition 80 ~ 100Pa of vacuum, melting at 1480 ~ 1500 DEG C of smelting temperature;
    2)Molten steel temperature is poured into casting mold when being down to 1390 ~ 1410 DEG C, and molten steel is full of casting mold die cavity, is solidified, and cooling, that is, is contained Tungsten titanium high manganese steel casting;
    3)Casting is risen to 650 DEG C with 70 DEG C/h of < programming rate, is incubated 2 ~ 3 hours;Again with 100 DEG C/h of < programming rate 1080 ~ 1110 DEG C are risen to, be incubated 1 hour per 20mm by casting thickness adds 2 hours again, and heating casting is less than into 40 DEG C in temperature, Cooled down in the 10% NaOH aqueous solution.
  2. 2. tungstenic titanium potassium steel according to claim 1, it is characterized in that composition and weight/mass percentage composition are Mn:11~14%.
  3. 3. tungstenic titanium potassium steel according to claim 1, it is characterized in that composition and weight/mass percentage composition are Mn:16~18%.
  4. 4. tungstenic titanium potassium steel according to claim 1, it is characterized in that composition and weight/mass percentage composition are Mn:20~23%.
  5. 5. the preparation method of tungstenic titanium potassium steel as claimed in claim 1, it is characterized in that comprising the steps of:
    1)Steel scrap, high carbon ferromanganese, electrolytic manganese, ferrotianium, ferrotungsten and medium carbon ferrochrome are existed by potassium steel composition and weight/mass percentage composition 80 ~ 100Pa of vacuum, melting at 1480 ~ 1500 DEG C of smelting temperature;
    2)Molten steel temperature is poured into casting mold when being down to 1390 ~ 1410 DEG C, and molten steel is full of casting mold die cavity, is solidified, and cooling, that is, is contained Tungsten titanium high manganese steel casting;
    3)Casting is risen to 650 DEG C with 70 DEG C/h of < programming rate, is incubated 2 ~ 3 hours;Again with 100 DEG C/h of < programming rate 1080 ~ 1110 DEG C are risen to, be incubated 1 hour per 20mm by casting thickness adds 2 hours again, and heating casting is less than into 40 DEG C in temperature, Cooled down in the 10% NaOH aqueous solution.
CN201610209608.4A 2016-04-06 2016-04-06 A kind of tungstenic titanium potassium steel and preparation method thereof Active CN105779889B (en)

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Publication number Priority date Publication date Assignee Title
CN110468343B (en) * 2019-09-20 2020-12-08 广东省材料与加工研究所 TiC precipitation reinforced high manganese steel base composite material and preparation process thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1136086A (en) * 1996-01-25 1996-11-20 西安电力机械厂 Wearproof alloy with high manganese content
CN104928601A (en) * 2015-05-27 2015-09-23 芜湖银海机械制造有限公司 High-manganese-steel bush for crusher and manufacturing method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1136086A (en) * 1996-01-25 1996-11-20 西安电力机械厂 Wearproof alloy with high manganese content
CN104928601A (en) * 2015-05-27 2015-09-23 芜湖银海机械制造有限公司 High-manganese-steel bush for crusher and manufacturing method thereof

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