CN105908087A - High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter - Google Patents
High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter Download PDFInfo
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- CN105908087A CN105908087A CN201610519910.XA CN201610519910A CN105908087A CN 105908087 A CN105908087 A CN 105908087A CN 201610519910 A CN201610519910 A CN 201610519910A CN 105908087 A CN105908087 A CN 105908087A
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- China
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- resistant
- manganese
- chromium
- lanthanum
- coal
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Classifications
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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
-
- 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
- C22C38/005—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/285—Teeth characterised by the material used
Abstract
The invention discloses high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of a coal cutter and a preparation method of the high-temperature-resistant and abrasion-resistant alloy steel for the bucket teeth of the coal cutter. The high-temperature-resistant and abrasion-resistant alloy steel is prepared from, by weight, 0.3%-0.5% of carbon, 0.60%-1.20% of silicon, 12%-14% of manganese, 1%-3% of chrome, 0.1%-0.3% of lanthanum, 0.05%-0.80% of vanadium, smaller than 0.04% of phosphorus, smaller than 0.04% of sulfur, 0.20%-0.30% of molybdenum, 0.04%-0.07% of niobium and the balance iron, wherein the content of manganese, lanthanum, chromium and vanadium totally accounts for 14% to 16%. The alloy steel has high hardness and high strength, is good in abrasion resistance and resistant to high temperature, also has the advantages of being good in toughness and plasticity and resistant to corrosion, and is high in cost performance.
Description
Technical field
The present invention relates to production facility of coalmine field of material technology, particularly belong to a kind of coal-winning machine bucket
Tooth heat resistant and wear resistant steel alloy and preparation method thereof.
Background technology
Excavator bucket teeth is a large amount of consumable accessorys consumed in digging operation, and working condition is severe,
Failure mode majority is abrasion, and minority ruptures.Before bucket tooth is generally seated in power shovel
End, is cantilevered beam members, directly contacts with the material such as Ore, sand, rock.In contacting material
Time, both withstood shocks effect, bears again Moment.During military service, bucket tooth tip is by relatively
Big impact-sliding abrasive wear, often there is various ditch dug with a plow, deformation in surface, tip, causes surface to grind
Damage or come off.Domestic bucket tooth material the most frequently used for potassium steel, it is low that it also exists service life,
The problem of Resisting fractre ability.In China, annual bucket tooth consumption is the biggest.How to improve bucket tooth
Service life, develop that production technology is easy, use novel bucket tooth reliable, cheap and good-quality
High-ductility abrasion-proof material, is still the problem being currently needed for solving further.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of coal-winning machine bucket tooth with high temperature resistant
Wear-resisting alloy steel and preparation method thereof, steel alloy not only has high hardness, high intensity, wear-resisting
Property is good, high temperature resistant, but also has good toughness, plasticity advantage good, corrosion resistant, cost performance
High.
The technical solution used in the present invention is as follows:
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy, is made up of following components by weight percent: carbon
0.3-0.5%, silicon 0.60-1.20%, manganese 12-14%, chromium 1-3%, lanthanum 0.1～0.3%, vanadium
0.05-0.80%, phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.20-0.30%, niobium 0.04-0.0
7%, balance iron；Wherein manganese, lanthanum, chromium and vanadium are total up to 14～16%.
Described carbon 0.3%, silicon 0.60%, manganese 12%, chromium 2%, lanthanum 0.1%, vanadium 0.05%,
Phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.20%, niobium 0.04%.
Described carbon 0.5%, silicon 1.20%, manganese 14%, chromium 1%, lanthanum 0.3%, vanadium 0.6%,
Phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.30%, niobium 0.07%.
Described carbon 0.4%, silicon 0.9%, manganese 13%, chromium 2%, lanthanum 0.2%, vanadium 0.4%, phosphorus
＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.25%, niobium 0.05%.
A kind of preparation method of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy, 1) dispensing: choosing
Take scrap iron, steel scrap and contain silicon, manganese, chromium, the alloy of molybdenum；
2) melting: first by 1) dispensing in step puts into furnace bottom and is lined with the intermediate frequency furnace of hot Calx
In, fusing；
3) sampling adjust: make it obtain 1) step design proportioning,
4) moulding by casting: then go out intermediate frequency furnace；
5) heat treatment: by 4) quench；After workpiece quenching, it is 220-250 in temperature
It is tempered under conditions of DEG C, then insulation 20-30 minute, with stabilizing tissue；
6) again after tempering furnace inside holding 8-9 hour of 300-320 DEG C air cooling to room temperature.
Compared with the prior art, beneficial effects of the present invention is as follows:
The present invention adds the elements such as lanthanum, molybdenum, niobium, the alloy obtained on the basis of mild steel
It is good, high temperature resistant that steel not only has high hardness, high intensity, wearability, but also has tough
Property good, plasticity advantage good, corrosion resistant, cost performance is high, and steel alloy mechanical property is: draw
Stretch intensity 1521MPa, yield strength 925MPa, elongation percentage 14.3%, the contraction percentage of area 30.
7%, impact absorbing energy 52.7J, impact flexibility 63J/cm2, hardness 275HB.
Detailed description of the invention
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy, is made up of following components by weight percent:
Described described carbon 0.4%, silicon 0.9%, manganese 13%, chromium 2%, lanthanum 0.2%, vanadium 0.4%,
Phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.25%, niobium 0.05%.
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy preparation method, 1) dispensing: choose
Scrap iron, steel scrap and containing silicon, manganese, chromium, the alloy of molybdenum；
2) melting: first by 1) dispensing in step puts into furnace bottom and is lined with the intermediate frequency furnace of hot Calx
In, fusing；
3) sampling adjust: make it obtain 1) step design proportioning,
4) moulding by casting: then go out intermediate frequency furnace；
5) heat treatment: by 4) quench；After workpiece quenching, it is 220-250 in temperature
It is tempered under conditions of DEG C, then insulation 20-30 minute, with stabilizing tissue；
6) again after tempering furnace inside holding 8-9 hour of 300-320 DEG C air cooling to room temperature.
The present invention adds the elements such as lanthanum, molybdenum, niobium, the alloy obtained on the basis of mild steel
It is good, high temperature resistant that steel not only has high hardness, high intensity, wearability, but also has tough
Property good, plasticity advantage good, corrosion resistant, cost performance is high.Embodiment medium alloy steel mechanical property
Can be: hot strength 1521MPa, yield strength 925MPa, elongation percentage 14.3%, section
Shrinkage factor 30.7%, impact absorbing energy 52.7J, impact flexibility 63J/cm2, hardness 275HB.
The ultimate principle of the present invention, principal character and the present invention excellent has more than been shown and described
Point.Skilled person will appreciate that of the industry, the present invention is not restricted to the described embodiments, on
State the principle that the present invention is simply described described in embodiment and description, without departing from the present invention
On the premise of spirit and scope, the present invention also has various changes and modifications, and these change and change
Enter to both fall within scope of the claimed invention.Claimed scope is by appended power
Profit claim and equivalent thereof define.
Claims (5)
1. a coal-winning machine bucket tooth heat resistant and wear resistant steel alloy, it is characterised in that: by following
Components by weight percent form: carbon 0.3-0.5%, silicon 0.60-1.20%, manganese 12-14%, chromium 1-3%,
Lanthanum 0.1～0.3%, vanadium 0.05-0.80%, phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.20-
0.30%, niobium 0.04-0.07%, balance iron；Wherein manganese, lanthanum, chromium and vanadium are total up to 14～1
6%.
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy the most according to claim 1,
It is characterized in that: described carbon 0.3%, silicon 0.60%, manganese 12%, chromium 2%, lanthanum 0.1%,
Vanadium 0.05%, phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.20%, niobium 0.04%.
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy the most according to claim 1,
It is characterized in that: described carbon 0.5%, silicon 1.20%, manganese 14%, chromium 1%, lanthanum 0.3%,
Vanadium 0.6%, phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.30%, niobium 0.07%.
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy the most according to claim 1,
It is characterized in that: described carbon 0.4%, silicon 0.9%, manganese 13%, chromium 2%, lanthanum 0.2%, vanadium
0.4%, phosphorus ＜ 0.04%, sulfur ＜ 0.04%, molybdenum 0.25%, niobium 0.05%.
A kind of coal-winning machine bucket tooth heat resistant and wear resistant steel alloy the most according to claim 1
Preparation method, it is characterised in that: 1) dispensing: choose scrap iron, steel scrap and containing silicon, manganese,
Chromium, the alloy of molybdenum；
2) melting: first by 1) dispensing in step puts into furnace bottom and is lined with the intermediate frequency furnace of hot Calx
In, fusing；
3) sampling adjust: make it obtain 1) step design proportioning,
4) moulding by casting: then go out intermediate frequency furnace；
5) heat treatment: by 4) quench；After workpiece quenching, it is 220-250 in temperature
It is tempered under conditions of DEG C, then insulation 20-30 minute, with stabilizing tissue；
6) again after tempering furnace inside holding 8-9 hour of 300-320 DEG C air cooling to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519910.XA CN105908087A (en) | 2016-07-05 | 2016-07-05 | High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519910.XA CN105908087A (en) | 2016-07-05 | 2016-07-05 | High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105908087A true CN105908087A (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610519910.XA Pending CN105908087A (en) | 2016-07-05 | 2016-07-05 | High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter |
Country Status (1)
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| CN (1) | CN105908087A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755853A (en) * | 2016-11-30 | 2017-05-31 | 河池市技术开发中心 | A kind of Technology for Heating Processing of coal-winning machine mild steel |
| CN107815610A (en) * | 2017-09-19 | 2018-03-20 | 宁波至诚新材料有限公司 | A kind of excavator bucket teeth and preparation method thereof |
| CN108286024A (en) * | 2017-12-21 | 2018-07-17 | 安徽中电气有限公司 | A kind of processing method of high-toughness wear-resistant sleeve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779116A (en) * | 1980-10-31 | 1982-05-18 | Nippon Steel Corp | Production of high tensile steel having superior toughness |
| EP0943697A1 (en) * | 1997-05-12 | 1999-09-22 | Nippon Steel Corporation | High-toughness spring steel |
| CN103397275A (en) * | 2013-08-09 | 2013-11-20 | 钢铁研究总院 | Martensite series wear-resistant steel and preparation method thereof |
| CN103572172A (en) * | 2013-11-22 | 2014-02-12 | 乐山市泰钢鑫科机械制造有限公司 | Wear-resistant alloy steel and preparation method thereof |
| CN105349749A (en) * | 2014-08-22 | 2016-02-24 | 无锡市第二标准件制造有限公司 | Bolt heat treatment technology |
-
2016
- 2016-07-05 CN CN201610519910.XA patent/CN105908087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779116A (en) * | 1980-10-31 | 1982-05-18 | Nippon Steel Corp | Production of high tensile steel having superior toughness |
| EP0943697A1 (en) * | 1997-05-12 | 1999-09-22 | Nippon Steel Corporation | High-toughness spring steel |
| CN103397275A (en) * | 2013-08-09 | 2013-11-20 | 钢铁研究总院 | Martensite series wear-resistant steel and preparation method thereof |
| CN103572172A (en) * | 2013-11-22 | 2014-02-12 | 乐山市泰钢鑫科机械制造有限公司 | Wear-resistant alloy steel and preparation method thereof |
| CN105349749A (en) * | 2014-08-22 | 2016-02-24 | 无锡市第二标准件制造有限公司 | Bolt heat treatment technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755853A (en) * | 2016-11-30 | 2017-05-31 | 河池市技术开发中心 | A kind of Technology for Heating Processing of coal-winning machine mild steel |
| CN107815610A (en) * | 2017-09-19 | 2018-03-20 | 宁波至诚新材料有限公司 | A kind of excavator bucket teeth and preparation method thereof |
| CN108286024A (en) * | 2017-12-21 | 2018-07-17 | 安徽中电气有限公司 | A kind of processing method of high-toughness wear-resistant sleeve |
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Application publication date: 20160831 |
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