CN105886911B - Preparation method of high-strength high-toughness wear-resistant lining plate of semi-autogenous mill - Google Patents

Preparation method of high-strength high-toughness wear-resistant lining plate of semi-autogenous mill Download PDF

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CN105886911B
CN105886911B CN201610252642.XA CN201610252642A CN105886911B CN 105886911 B CN105886911 B CN 105886911B CN 201610252642 A CN201610252642 A CN 201610252642A CN 105886911 B CN105886911 B CN 105886911B
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alloy
temperature
heating
strength
semi
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CN105886911A (en
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齐亮
肖翔鹏
邵传兵
马琳亭
李彦龙
薛莹莹
陈文波
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Northwest Research Institute of Mining and Metallurgy
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

A preparation technology of a high-strength high-toughness wear-resistant lining plate of a semi-autogenous mill relates to the technical field of wear-resistant material manufacture, and the chemical components (weight percentage) for manufacturing lining plate alloy are as follows: c = 0.8-1.2%, Mn = 19-25%, Si = 0.5-0.8%, Cr = 1.5-2.2%, Mo = 0.3-0.8%, V = 0.2-0.5%, Ti = 0.05-0.1%, N = 0.01-0.1%, P is less than or equal to 0.07%, S is less than or equal to 0.05%, Re is less than or equal to 0.1%, and the balance is Fe. The casting temperature of the alloy is 1450-1500 ℃, the alloy is cooled to below 200 ℃ after being cast and molded, then the alloy is placed into a heating furnace for heating and heat preservation treatment, the heating temperature is maintained at 1050-1080 ℃ for 4-6 hours, water toughening treatment is carried out after the heating is finished, low-temperature return treatment is carried out again after the water toughening treatment, and the tempering temperature is maintained at 200-400 ℃ for 4-6 hours. The alloy is subjected to rare earth modification treatment before casting, and then is kept stand for 5 minutes for casting. The invention has the beneficial effects that: the high-strength high-toughness wear-resistant lining plate produced by the formula and the manufacturing method has the yield strength of 500-650 MPa, the tensile strength of 900-1100 MPa, the elongation of more than 40%, the room-temperature impact energy AKu of more than 150J and the HRW of more than 22.

Description

A kind of preparation method of semi-autogenous mill high-strength and high ductility abrasion-proof backing block
Technical field
The present invention relates to high-abrasive material manufacturing technology field, specifically a kind of system of semi-autogenous mill high-strength and high ductility abrasion-proof backing block Preparation Method.
Background technology
Semi-autogenous mill liner plate is mainly used to protect cylinder, and major product is that potassium steel and low-alloy are resistance on domestic market Grind steel.The most important feature of potassium steel is under strong impact, extruding condition, and top layer can occur to process hardening phenomenon, but high Manganese steel under low operating mode due to cannot get enough impact and friction, therefore its work hardening capacity can not be given full play to, from And wearability is caused to reduce；Low-alloy steel requires higher to Composition Control and Technology for Heating Processing, and it is high to prepare cost.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation method of semi-autogenous mill high-strength and high ductility abrasion-proof backing block, It is poor to solve prior art wearability, prepare the problem of cost is high.
The present invention solve technical problem technical scheme be：A kind of preparation side of semi-autogenous mill high-strength and high ductility abrasion-proof backing block Method, the chemical composition (percentage by weight) for making liner plate alloy are：C=0.8 ~ 1.2%, Mn=19 ~ 25%, Si=0.5 ~ 0.8%, Cr= 1.5 ~ 2.2%, Mo=0.3 ~ 0.8%, V=0.2 ~ 0.5%, Ti=0.05 ~ 0.1%, N=0.01 ~ 0.1%, P≤0.07%, S≤0.05%, RE ≤ 0.1%, surplus Fe.
The cast temperature of the alloy is 1450 ~ 1500 DEG C, and less than 200 DEG C are cooled to after cast molding, is placed into afterwards The processing of heating furnace heating and thermal insulation, heating-up temperature maintain 1050 ~ 1080 DEG C, continue 4 ~ 6 hours, and heating terminates the laggard tough place of water-filling Manage, after water-tenacity treatment, lonneal is handled again, and temperature maintains 200 ~ 400 DEG C, 4 ~ 6 hours.
Pass through rare earth Dy ions before the alloy casting, stand 5 minutes afterwards is cast again.
The beneficial effects of the present invention are：The high-strength and high ductility abrasion-proof backing block that formula and manufacture method produce more than, its Yield strength is more than 40% in 500 ~ 650MPa, tensile strength in 900 ~ 1100MPa, elongation percentage, and room temperature impact work(AKu is higher than 150J, HRW ＞ 22.
Because material Mn contents are higher than traditional potassium steel, by adding Ti, V and N element, crystal grain thinning is in lonneal Middle precipitation second phase particles, coordinating follow-up rare earth Dy ions, rare earth can make S, O in steel have stronger adhesion, Spherical or elliposoidal rare earth S, O compound is preferentially formed in alloy graining process, plays a part of forming core alterant, refinement casting State tissue crystal grain.The intensity and anti-wear performance of material are improved by refined crystalline strengthening and precipitation strength.
Embodiment
The present invention will be further described with reference to embodiments.
Embodiment 1.
A kind of new Super-high Manganese abrasion-proof backing block includes following weight percent composition, C=1.029%, Mn=20.882%, Si =0.395%, Cr=1.825%, Mo=0.565%, V=0.245%, Ti=0.031%, N=0.02%, RE=0.02%, S=0.017%, P= 0.065% other Fe.
The component steel passes through rare earth Dy ions in 1400 ~ 1500 DEG C of cast temperature before casting, and standing sand after 5 minutes Die cast, die sinking is taken out after temperature is less than 200 DEG C, and is put into heating furnace and is heated, small in 1050 ~ 1080 DEG C of insulations 4 ~ 6 When after water-tenacity treatment, then carry out tempers at 200 ~ 400 DEG C, the tensile strength for obtaining material is more than 950MPa, surrender Intensity is more than 520MPa, and impact flexibility is not less than AKu180J, HRW ＞ 23.5.
Embodiment 2.
A kind of new Super-high Manganese abrasion-proof backing block includes following weight percent composition, C=1.028%, Mn=20.852%, Si=0.471%, Cr=2.174%, Mo=0.565%, V=0.278%, Ti=0.02%, N=0.018%, RE=0.02%, S= 0.013%, P 0.067%, other Fe.
The component steel passes through rare earth Dy ions in 1450 ~ 1500 DEG C of cast temperature before casting, and standing sand after 5 minutes Die cast, die sinking is taken out after temperature is less than 200 DEG C, and is put into heating furnace and is heated, small in 1050 ~ 1080 DEG C of insulations 4 ~ 6 When after water-tenacity treatment, then carry out tempers at 200 ~ 400 DEG C, the tensile strength for obtaining material is more than 970MPa, surrender Intensity is more than 500MPa, and impact flexibility is not less than AKu180J, HRW ＞ 22.
Embodiment 3.
A kind of new Super-high Manganese abrasion-proof backing block includes following weight percent composition, the % of C=0.992, Mn=22.605% , Si=0.684%, Cr=1.914%, Mo=0.564%, V=0.276%, Ti=0.03%, N=0.026%, RE= 0.016%, S=0.02%, P=0.074 %, other Fe.
The component steel passes through rare earth Dy ions in 1450 ~ 1480 DEG C of cast temperature before casting, and standing sand after 5 minutes Die cast, die sinking is taken out after temperature is less than 200 DEG C, and is put into heating furnace and is heated, small in 1050 ~ 1080 DEG C of insulations 4 ~ 6 When after water-tenacity treatment, then carry out tempers at 200 ~ 400 DEG C, the tensile strength for obtaining material is more than 1000MPa, surrender Intensity is more than 540MPa, and impact flexibility is not less than AKu150J, HRW ＞ 23.6.
Embodiment 4.
A kind of new Super-high Manganese abrasion-proof backing block includes following weight percent composition, the % of C=1.048, Mn=24.053% , Si=0.562%, Cr=2.043%, Mo=0. 654%, V=0.352%, Ti=0.026%, the S of N=0.036%, RE=0.02%= 0.026%, P=0.054 %, other Fe.
The component steel passes through rare earth Dy ions in 1480 ~ 1500 DEG C of cast temperature before casting, and standing sand after 5 minutes Die cast, die sinking is taken out after temperature is less than 200 DEG C, and is put into heating furnace and is heated, small in 1050 ~ 1080 DEG C of insulations 4 ~ 6 When after water-tenacity treatment, then carry out tempers at 200 ~ 400 DEG C, the tensile strength for obtaining material is more than 1030MPa, surrender Intensity is more than 560MPa, and impact flexibility is not less than AKu150J, HRW ＞ 24.2.

Claims (2)

  1. A kind of 1. preparation method of semi-autogenous mill high-strength and high ductility abrasion-proof backing block, it is characterised in that：The change for making liner plate alloy Studying point (percentage by weight) is：C=0.8 ~ 1.2%, Mn=19 ~ 25%, Si=0.5 ~ 0.8%, Cr=1.5 ~ 2.2%, Mo=0.3 ~ 0.8%, V=0.2 ~ 0.5%, Ti=0.05 ~ 0.1%, N=0.01 ~ 0.1%, P≤0.07%, S≤0.05%, RE≤0.1%, surplus Fe； The cast temperature of the alloy is 1450 ~ 1500 DEG C, and less than 200 DEG C are cooled to after cast molding, heating furnace is placed into afterwards and adds Hot isothermal holding, heating-up temperature maintain 1050 ~ 1080 DEG C, continue 4 ~ 6 hours, and heating carries out water-tenacity treatment after terminating, and water is tough After processing, lonneal is handled again, and temperature maintains 200 ~ 400 DEG C, 4 ~ 6 hours.
  2. A kind of 2. preparation method of semi-autogenous mill high-strength and high ductility abrasion-proof backing block according to claim 1, it is characterised in that： Pass through rare earth Dy ions before the alloy casting, standing 5 minutes afterwards again, row is cast.
CN201610252642.XA 2016-04-21 2016-04-21 Preparation method of high-strength high-toughness wear-resistant lining plate of semi-autogenous mill Active CN105886911B (en)

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CN108149152A (en) * 2018-01-03 2018-06-12 江西理工大学 A kind of heavy rare earth yttrium is modified wear-resistant material and preparation method with twinning strengthening
CN110468333A (en) * 2019-09-03 2019-11-19 昆明理工大学 A kind of semi-autogenous mill high abrasion ultra-high manganese steel liner plate and preparation method
CN110499476A (en) * 2019-09-03 2019-11-26 昆明理工大学 A kind of high performance double metal wear-resistant liner and preparation method
CN113278883A (en) * 2021-04-28 2021-08-20 张选 Rare earth wear-resistant ultrahigh manganese steel for toothed plate of double-toothed roller screening coal crusher and manufacturing method thereof
CN113564452B (en) * 2021-07-13 2022-05-20 山西滨腾机械有限公司 Water quenching lining plate and preparation method and application thereof

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JPH01234548A (en) * 1988-03-15 1989-09-19 Japan Steel Works Ltd:The High-toughness roll for rolling
CN1884605A (en) * 2006-06-30 2006-12-27 周国发 High chromium manganese multiple element trace alloy wearable material and its production method
CN100540711C (en) * 2006-11-21 2009-09-16 鞍钢集团矿业公司 Ultra-high performance wearable high-manganese steel and production method thereof

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