CN104087842B - Chromium abrasion-proof backing block in one - Google Patents

Chromium abrasion-proof backing block in one Download PDF

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Publication number
CN104087842B
CN104087842B CN201410301934.9A CN201410301934A CN104087842B CN 104087842 B CN104087842 B CN 104087842B CN 201410301934 A CN201410301934 A CN 201410301934A CN 104087842 B CN104087842 B CN 104087842B
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China
Prior art keywords
degrees celsius
abrasion
backing block
proof backing
incubated
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CN104087842A (en
Inventor
李根有
李骏
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Ningguo City Zheng Xing High-Abrasive Material Co Ltd
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Ningguo City Zheng Xing High-Abrasive Material Co Ltd
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Abstract

The invention discloses chromium abrasion-proof backing block in one, belonging to abrasion-proof backing block technical field, each composition and percentage by weight thereof is: C:0.65 0.8%, Mn:0.6 0.8%, Si:0.6 0.8%, Cr:5.6 6.2%, Mo:0.6 0.7%, B:0.03 0.05%, Cu :≤0.2%, P :≤0.01%, Re:0.02 0.1%;Surplus is Fe.The abrasion-proof backing block of the present invention is by reasonably improving formula, by rational processing technology, abrasion-proof backing block is allowed to have good wearability, corrosion resistance, toughness, can be as ball grinding machine lining board, combined self-fastening lining plate, surface HRC is >=60Mpa, impact absorbing energy >=20J, service life is 10,000 12000 hours, and alloy species is few, weight ratio is low, reduces cost.

Description

Chromium abrasion-proof backing block in one
Technical field
The present invention relates to abrasion-proof backing block technical field, be specifically related to chromium abrasion-proof backing block in one.
Background technology
High-abrasive material is that a big class has special electricity, magnetic, light, sound, heat, power, chemistry and biological function New material, be high-tech sector and the national defense construction such as information technology, biotechnology, energy technology Some conventional industries of transformation are the most also had a very important role by important foundation material.
Abrasion-proof backing block, refers to that wear-resisting steel plate passes through cutting, roll bending deformation, punches and the production technology such as welding adds Work forms various abrasion-proof backing block, as conveyer liner plate, feeder base plate/cyclone separator back taper and liner plate, Abrasion-resistant blades etc., improve more than 15 times than general steel plate friction durability.
China's lining board of grinder to be consumed about 200,000 tons, lining board of crusher about 200,000 tons, it is worth nearly 20 Hundred million yuan, the loss therefore reducing lining material has highly important economic implications.
In Chinese Patent Application No.: disclose the preparation method of a kind of abrasion-proof backing block in 201310727251, belong to In abrasion-proof backing block technical field.Step is: step one, the preparation of casting sand type;Step 2, melting Journey, uses smelting furnace to carry out fusion smelting so that motlten metal is by following component and mass percent group thereof Become: C:3.0~3.2%, Si:0.3~0.4%, Mn:0.5~0.7%, Cr:2~3%, Mo:2.8~ 3.1%, Cu:0.8~1.2%, V:8~9%, B:0.002~0.003%, Sn:0.04~0.05%, Te:0.02~0.03%, Ce:0.01~0.02%, Zr:0.03~0.04%, Y:0.004~0.005%, P:0.01~0.02%, S:0.001~0.002%, surplus is Fe and inevitable impurity, wherein: Cu/Sn=20~24;Step 3, casting cycle;Step 4, heat treatment, wherein: wind quenching processes is shaking Carry out on dynamic workbench.Component in this technical scheme still needs to improve further to improve its service life, And alloy content is higher, add cost.
In Chinese Patent Application No.: disclose a kind of abrasion-proof backing block in 201120021447, including liner plate body, Surface recombination at liner plate body has the composite gridding of high-chromium alloy and ceramic particle, and this technical scheme can carry More than height or prolongation service life several times.But the surface of this kind of liner plate is mild, and abrasive body rubs with backing surface Wiping power deficiency can cause abrasive body to slide along its backing surface, reduces the hoisting depth of abrasive body, and Whole surface recombination pottery grid is relatively costly.
Summary of the invention
For the problems referred to above, the invention provides chromium abrasion-proof backing block in one, wear-resistant, corrosion-resistant, use Life-span is long.
In order to solve the problems referred to above, the technical scheme that the present invention provides is:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.65-0.8%, Mn:0.6-0.8 %, Si:0.6-0.8%, Cr:5.6-6.2%, Mo:0.6-0.7%, B:0.03-0.05%, Cu: ≤ 0.2%, P :≤0.01%, Re:0.02-0.1%;Surplus is Fe.
Preferably, each composition and percentage by weight thereof are: C:0.68-0.75%, Mn:0.65-0.8%, Si:0.65-0.8%, Cr:5.8-6.2%, Mo:0.62-0.7%, B:0.035-0.05%, Cu: ≤ 0.2%, P :≤0.01%, Re:0.04-0.1%;Surplus is Fe.
Preferably, each composition and percentage by weight thereof are: C:0.7%, Mn:0.68%, Si:0.75 %, Cr:5.9%, Mo:0.65%, B:0.045%, Cu:0.1%, P:0.004%, Re:0.06 %;Surplus is Fe.
The preparation method of described middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is 1,560 1565 Celsius Ferromanganese is added when spending;Add ferrosilicon when temperature is 1,570 1575 degrees Celsius, be subsequently adding middle chromium steel balance The content of C, Cr;When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, are taken off Phosphorus;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1,480 1500 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.2 1.4 hours at 200 degrees Celsius, It is incubated 1.2 1.3 hours at 360 370 degrees Celsius, little 620 630 degrees Celsius of insulations 1 1.1 Time, it is incubated 1 1.2 hours at 940 960 degrees Celsius;
(7) temper, is incubated 0.8 1 hours at 220 230 degrees Celsius, at 340 360 degrees Celsius It is incubated 1 1.2 hours.
C: form stable compound with Fe, Cr, Mn, improves its hardness and wearability by being heat-treated; C produces synergy with other elements, improves the combination property of abrasion-proof backing block.
Mn: be intensified element, incorporates ferrite, strengthens matrix, it is possible to thinning microstructure, improves abrasion-proof backing block Intensity, hardness, wearability.When Mn content is too low, material can not reach requirement, too high, improves into This, therefore Mn controls at 1.0-1.2%.
Cr: improve the quenching degree of material, can effectively prevent the graphite of free state from producing, make common cementite turn Become alloyed cementite, improve the overall intensity of abrasion-proof backing block and hardness, have good corrosion resistance and Antioxygenic property, stops graphitization, improves quenching degree.
Mo: can effectively suppress cementite to assemble, strengthens austenite structure, makes intensity and hardness increase, Strain-hardening performance enhancement, thus improve abrasion-resistance.
Re: improve toughness and the wearability of abrasion-proof backing block.Add Re and carry out Metamorphism treatment, make the crystal grain of steel Refinement, field trash even dispersion is distributed, and pattern, based on spherical, weaken field trash and steel matrix is isolated work With.
Compared with prior art, the invention have the benefit that
The abrasion-proof backing block of the present invention is by reasonably improving formula, by rational processing technology, allows wear-resisting lining Plate has good wearability, corrosion resistance, toughness, can be as ball grinding machine lining board, combined self-fixed type lining Plate, surface HRC is >=60Mpa, impact absorbing energy >=20J, and service life is 10,000 12000 Hour, and alloy species is few, weight ratio is low, reduces cost.
Detailed description of the invention
The present invention will be further described below:
Embodiment 1:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.7%, Mn:0.68%, Si:0.75%, Cr:5.9%, Mo:0.65%, B:0.045%, Cu:0.1%, P:0.004 %, Re:0.06%;Surplus is Fe.
The preparation method of middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is to add when 1562 degrees Celsius Enter ferromanganese;Add ferrosilicon when temperature is 1573 degrees Celsius, be subsequently adding the content of middle chromium steel balance C, Cr; When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, dephosphorization;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1485 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.3 hours at 200 degrees Celsius, 360 Degree Celsius insulation 1.3 hours, 620 degrees Celsius be incubated 1.1 hours, 950 degrees Celsius be incubated 1.1 Hour;
(7) temper, is incubated 0.9 hour at 225 degrees Celsius, is incubated 1.1 hours at 350 degrees Celsius.
C: form stable compound with Fe, Cr, Mn, improves its hardness and wearability by being heat-treated; C produces synergy with other elements, improves the combination property of abrasion-proof backing block.
Mn: be intensified element, incorporates ferrite, strengthens matrix, it is possible to thinning microstructure, improves abrasion-proof backing block Intensity, hardness, wearability.When Mn content is too low, material can not reach requirement, too high, improves into This, therefore Mn controls at 1.0-1.2%.
Cr: improve the quenching degree of material, can effectively prevent the graphite of free state from producing, make common cementite turn Become alloyed cementite, improve the overall intensity of abrasion-proof backing block and hardness, have good corrosion resistance and Antioxygenic property, stops graphitization, improves quenching degree.
Mo: can effectively suppress cementite to assemble, strengthens austenite structure, makes intensity and hardness increase, Strain-hardening performance enhancement, thus improve abrasion-resistance.
Re: improve toughness and the wearability of abrasion-proof backing block.Add Re and carry out Metamorphism treatment, make the crystal grain of steel Refinement, field trash even dispersion is distributed, and pattern, based on spherical, weaken field trash and steel matrix is isolated work With.
Embodiment 2:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.65%, Mn:0.8%, Si:0.6%, Cr:6.2%, Mo:0.6%, B:0.05%, Cu:0.1%, P:0.01%, Re: 0.1%;Surplus is Fe.
The preparation method of middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is to add when 1560 degrees Celsius Enter ferromanganese;Add ferrosilicon when temperature is 1575 degrees Celsius, be subsequently adding the content of middle chromium steel balance C, Cr; When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, dephosphorization;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1480 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.4 hours at 200 degrees Celsius, 360 Degree Celsius insulation 1.3 hours, 620 degrees Celsius be incubated 1.1 hours, 940 degrees Celsius be incubated 1.2 Hour;
(7) temper, is incubated 1 hour at 220 degrees Celsius, is incubated 1.2 hours at 340 degrees Celsius.
Embodiment 3:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.8%, Mn:0.6%, Si:0.8%, Cr:5.6%, Mo:0.7%, B:0.03%, Cu:0.2%, P:0.01%, Re: 0.02%;Surplus is Fe.
The preparation method of middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is to add when 1565 degrees Celsius Enter ferromanganese;Add ferrosilicon when temperature is 1570 degrees Celsius, be subsequently adding the content of middle chromium steel balance C, Cr; When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, dephosphorization;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1500 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.2 hours at 200 degrees Celsius, 370 Degree Celsius insulation 1.2 hours, 630 degrees Celsius be incubated 1 hour, 960 degrees Celsius be incubated 1 hour;
(7) temper, is incubated 0.8 hour at 230 degrees Celsius, is incubated 1 hour at 360 degrees Celsius.
Embodiment 4:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.65%, Mn:0.6%, Si:0.8%, Cr:6.2%, Mo:0.6%, B:0.03%, Cu:0.16%, P:0.01%, Re:0.1%;Surplus is Fe.
The preparation method of middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is to add when 1560 degrees Celsius Enter ferromanganese;Add ferrosilicon when temperature is 1570 degrees Celsius, be subsequently adding the content of middle chromium steel balance C, Cr; When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, dephosphorization;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1500 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.2 hours at 200 degrees Celsius, 360 Degree Celsius insulation 1.2 hours, 630 degrees Celsius be incubated 1 hour, 960 degrees Celsius be incubated 1 hour;
(7) temper, is incubated 0.9 hour at 226 degrees Celsius, is incubated 1.1 hours at 350 degrees Celsius.
Embodiment 5:
Chromium abrasion-proof backing block in one, each composition and percentage by weight thereof be: C:0.74%, Mn:0.68%, Si:0.65%, Cr:5.8%, Mo:0.65%, B:0.04%, Cu:0.18%, P:0.008 %, Re:0.06%;Surplus is Fe.
The preparation method of middle chromium abrasion-proof backing block, comprises the following steps:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is to add when 1564 degrees Celsius Enter ferromanganese;Add ferrosilicon when temperature is 1573 degrees Celsius, be subsequently adding the content of middle chromium steel balance C, Cr; When different temperatures, addition ferromanganese, ferrosilicon are easy to slagging-off, deoxidation, desulfurization, dephosphorization;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1486 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.3 hours at 200 degrees Celsius, 365 Degree Celsius insulation 1.2 hours, is incubated 1 hour at 628 degrees Celsius, 1.1 little 945 degrees Celsius of insulations Time;
(7) temper, is incubated 0.8 hour at 226 degrees Celsius, is incubated 1 hour at 360 degrees Celsius.
The general principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The industry Skilled person will appreciate that, the present invention is not restricted to the described embodiments, above-described embodiment and specification Described in the principle that the present invention is simply described, without departing from the spirit and scope of the present invention, this Invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention In.Claimed scope is defined by appending claims and equivalent thereof.

Claims (2)

1. chromium abrasion-proof backing block in a kind, it is characterised in that: each composition and percentage by weight thereof be: C:0.7%, Mn:0.68%, Si:0.75%, Cr:5.9%, Mo:0.65%, B:0.045%, Cu:0.1%, P:0.004%, Re:0.06%;Surplus is Fe.
Middle chromium abrasion-proof backing block the most according to claim 1, it is characterised in that preparation method includes following Step:
(1) sand mold is prepared;
(2) raw material melting, after raw material has melted, covers liquid level with pearl sand;Temperature is 1,560 1565 to take the photograph Ferromanganese is added when family name spends;Add ferrosilicon when temperature is 1,570 1575 degrees Celsius, be subsequently adding middle chromium steel The content of balance C, Cr;
(3) add Re and carry out Metamorphism treatment;
(4) ladle covering agent is added;
(5) casting, temperature is 1,480 1500 degrees Celsius;
(6) Quenching Treatment, less than 200 degrees Celsius shove charges, it is incubated 1.2 1.4 hours at 200 degrees Celsius, It is incubated 1.2 1.3 hours at 360 370 degrees Celsius, is incubated 1 1.1 at 620 630 degrees Celsius Hour, it is incubated 1 1.2 hours at 940 960 degrees Celsius;
(7) temper, is incubated 0.8 1 hours at 220 230 degrees Celsius, Celsius 340 360 Degree insulation 1 1.2 hours.
CN201410301934.9A 2014-06-26 2014-06-26 Chromium abrasion-proof backing block in one Expired - Fee Related CN104087842B (en)

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CN106282830A (en) * 2016-08-26 2017-01-04 宁波东电电力设备制造有限公司 A kind of ash crusher abrasion-proof backing block

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CN101798660A (en) * 2010-01-11 2010-08-11 段岳君 Method for refining, metamorphosing and casting cold roll steel by casting instead of forging
CN101899620A (en) * 2009-12-11 2010-12-01 孙荣玖 Production process of wear-resistant alloy steel lining board
CN102808134A (en) * 2012-08-30 2012-12-05 孙荣玖 Alloy steel lining plate special for large/medium-sized ball mill and production process for alloy steel lining plate
CN103114252A (en) * 2013-03-01 2013-05-22 河南理工大学 Low-alloy wear-resistant steel for lining plate and preparation method thereof
CN103276162A (en) * 2013-05-24 2013-09-04 江苏双星特钢有限公司 Heat-treatment machining method of wear-resistant medium alloy steel castings
CN103498107A (en) * 2013-10-22 2014-01-08 江苏盛伟模具材料有限公司 High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof
CN103667992A (en) * 2013-12-20 2014-03-26 江阴兴澄特种钢铁有限公司 Steel plate with high hardness and abrasion resistance
WO2014075202A1 (en) * 2012-11-14 2014-05-22 Compañía Electro Metalúrgica S.A. Method for the production of high-wear-resistance martensitic cast steel and steel with said characteristics

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Publication number Priority date Publication date Assignee Title
CN1417366A (en) * 2001-11-05 2003-05-14 江苏省机电研究所 Antiwear alloy steel containg RE, B and Cr and its prepn
CN1775983A (en) * 2005-12-09 2006-05-24 长沙理工大学 High-strength casted air-colled bainite wear-resisting steel and preparing method
CN100999803A (en) * 2006-12-22 2007-07-18 西安交通大学 High boron wear-resisting casting steel and preparation process thereof
CN101899620A (en) * 2009-12-11 2010-12-01 孙荣玖 Production process of wear-resistant alloy steel lining board
CN101798660A (en) * 2010-01-11 2010-08-11 段岳君 Method for refining, metamorphosing and casting cold roll steel by casting instead of forging
CN102808134A (en) * 2012-08-30 2012-12-05 孙荣玖 Alloy steel lining plate special for large/medium-sized ball mill and production process for alloy steel lining plate
WO2014075202A1 (en) * 2012-11-14 2014-05-22 Compañía Electro Metalúrgica S.A. Method for the production of high-wear-resistance martensitic cast steel and steel with said characteristics
CN103114252A (en) * 2013-03-01 2013-05-22 河南理工大学 Low-alloy wear-resistant steel for lining plate and preparation method thereof
CN103276162A (en) * 2013-05-24 2013-09-04 江苏双星特钢有限公司 Heat-treatment machining method of wear-resistant medium alloy steel castings
CN103498107A (en) * 2013-10-22 2014-01-08 江苏盛伟模具材料有限公司 High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof
CN103667992A (en) * 2013-12-20 2014-03-26 江阴兴澄特种钢铁有限公司 Steel plate with high hardness and abrasion resistance

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