CN103160742B - A kind of wear-resisting steel plate and manufacture method thereof - Google Patents
A kind of wear-resisting steel plate and manufacture method thereof Download PDFInfo
- Publication number
- CN103160742B CN103160742B CN201310105151.9A CN201310105151A CN103160742B CN 103160742 B CN103160742 B CN 103160742B CN 201310105151 A CN201310105151 A CN 201310105151A CN 103160742 B CN103160742 B CN 103160742B
- Authority
- CN
- China
- Prior art keywords
- wear
- steel plate
- resisting steel
- manufacture method
- annealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a kind of wear-resisting steel plate and manufacture method thereof, does is the weight percent of its chemical composition: C0.60 ~ 0.75%, Si? 0.10 ~ 0.50%, Mn0.40 ~ 1.20%, P≤0.015%, S≤0.010%, Ni0.50 ~ 1.50%, Cu0.10 ~ 0.50%, Al0.010 ~ 0.080%, Ca0.0010% ~ 0.0080%, N≤0.0080%, O≤0.0080%, H≤0.0004%, all the other are Fe and inevitable impurity; Its microstructure is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.The steel plate structure property that the present invention is obtained by above composition and appropriate heating and annealing heat treatment process is even, hardness and wear resistance good, especially there is excellent processing characteristics and good low-temperature flexibility, be especially suitable for use as the high-abrasive material of retrofit.
Description
Technical field
The present invention relates to a kind of wear resisting steel, particularly relate to a kind of wear-resisting steel plate and the manufacture method thereof that need retrofit; Its microstructure is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
Background technology
Wear-resisting steel plate is generally used for and requires high-strength, hardness, on the industry engineering goods such as engineering, mining of high-wear resistance, as excavator, scraper conveyer etc.
Tradition wear resisting steel is Hadfield Steel, and it under large impact loading, strain inducing martensitic transformation can occur, and strong hardness improves, and then improves wear resistance.Hadfield Steel is limited to the shortcomings such as alloying element content is high, mechanical workout is difficult, can not widespread use in mechanical means.Recent researches low-carbon and low-alloy martensite wear resistant steel is more, and it, mainly through adding appropriate carbon and alloying element, is produced by the mode such as Quench and temper or TMCP.This kind of wear resisting steel principal feature is that strong hardness is high, and has certain toughness and weldability, can be applicable to the mechanical means such as engineering, colliery widely.But need processing characteristics excellent to some, have the equipment of certain wear resistance, high strong wear resisting steel does not meet the demands simultaneously.
Chinese patent CN101250673 discloses a kind of low-carbon low-alloy abrasion-resistant steel, and adopt Quenching plus tempering process to produce, strong hardness is very high, and this must cause machining property slightly poor, and the equipment processed needing delicate mechanical is especially inapplicable.
Chinese patent CN102560272A discloses a kind of Medium carbon low alloy wear-resistant steel, and adopt TMCP explained hereafter, strong hardness is very high, and machining property is inevitable poor, and the equipment processed needing delicate mechanical is also inapplicable.
Summary of the invention
The object of the present invention is to provide a kind of wear-resisting steel plate and manufacture method thereof, its Brinell hardness is greater than 250HB,-20 DEG C of summers are greater than 40J than V-type impact of collision merit, achieve the matched well of hardness and wear resistance, this wear-resisting steel plate especially has excellent machining property and good low-temperature flexibility, is extremely of value to the widespread use in engineering.
To achieve these goals, the present invention adopts following technical scheme:
A kind of wear-resisting steel plate, the weight percent of its chemical composition is: C:0.60 ~ 0.75%, Si:0.10 ~ 0.50%, Mn:0.40 ~ 1.20%, P≤0.015%, S≤0.010%, Ni:0.50 ~ 1.50%, Cu:0.10 ~ 0.50%, Al:0.010 ~ 0.080%, 0.0010%≤Ca≤0.0080%, N≤0.0080%, O≤0.0080%, H≤0.0004%, all the other are Fe and inevitable impurity; Its microstructure is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
The chemical composition effect of wear-resisting steel plate involved in the present invention is as follows:
Carbon: carbon is the most basic in wear resisting steel, most important element, can improve intensity and the hardness of steel, and then improves the wear resistance of steel, but its to the toughness of steel and welding property unfavorable, therefore, answer the carbon content in conservative control wear resisting steel to be 0.60-0.75wt.%, be preferably 0.62-0.75wt.%.
Silicon: silicon is solid-solubilized in ferrite and austenite the hardness and the intensity that improve them, but the too high meeting of silicone content causes the toughness of steel sharply to decline.Consider that silicon is stronger than iron with the avidity of oxygen simultaneously, during welding, easily produce the silicate of low melting point, increase the mobility of slag and deposite metal, affect weldquality, therefore content is not easily too much, and controlling silicon in wear resisting steel of the present invention is 0.10-0.50wt.%, is preferably 0.10-0.40wt.%.
Manganese: manganese increases the hardening capacity of steel strongly, reduces the critical cooling velocity of wear resisting steel transition temperature and steel.But when Fe content is higher, there is the tendency making grain coarsening, and increase the crisp susceptibility of steel belt roof bolt, and easily cause occurring segregation and crackle in strand, reduce the performance of steel plate, controlling Fe content in wear resisting steel of the present invention is 0.40-1.20wt.%, is preferably 0.40-1.00wt.%.
Nickel: nickel can dissolve each other with any ratio with iron, is improved the toughness of steel by fining ferrite grains, and nickel can improve the intensity of steel, and keeps good plasticity and toughness, nickel has the effect obviously reducing Cold Brittleness Transition Temperature.Nickel can improve the processibility of steel.Nickel content too much can cause cost greatly to increase, and considers, and controls nickel content 0.50-1.50wt.% in wear resisting steel of the present invention, is preferably 0.50-1.00wt.%.
Copper: add solidity to corrosion, intensity that copper can improve steel in steel, improve plasticity and machining property etc., but content too much can cause hot-short, therefore in wear resisting steel of the present invention, copper content control, at 0.10-0.50wt.%, is preferably 0.10-0.40wt.%.
Aluminium: aluminium and nitrogen in steel can form the AlN particle of tiny indissoluble, the crystal grain of refinement steel.Aluminium can the crystal grain of refinement steel, and the nitrogen in fixing steel and oxygen, alleviate the susceptibility of steel to breach, reduce or eliminate the aging phenomenon of steel, and improve the toughness of steel, therefore in wear resisting steel of the present invention, aluminium content controls at 0.010-0.080wt.%, is preferably 0.020-0.080wt.%.
Calcium: calcium has remarkable effect to the rotten of Inclusion, add appropriate calcium in cast steel and can change the strip sulfide inclusion in cast steel into spherical CaS or (Ca, Mn) S is mingled with, the oxide compound that calcium is formed and sulfide inclusion density little, be easy to float get rid of.Calcium also significantly reduces the segregation of sulphur at crystal boundary, and these are all of value to the quality improving cast steel, and then improves the performance of steel.Controlling calcium contents in wear resisting steel of the present invention is 0.0010wt%≤Ca≤0.0080wt.%, is preferably 0.0010wt%≤Ca≤0.0050wt.%.
Phosphorus and sulphur: in wear resisting steel, sulphur and phosphorus are harmful element, and their content will strictly control, and controls phosphorus content≤0.015wt.% in steel grade involved in the present invention, are preferably≤0.012wt.%; Control sulphur content≤0.010wt.%, be preferably≤0.005wt.%.
Nitrogen, oxygen and hydrogen: oxygen too much in steel and nitrogen are very disadvantageous to the performance of steel especially weldability and tough performance, but controlled sternly significantly to increase production cost, therefore, control nitrogen content≤0.0080wt.% in steel grade involved in the present invention, be preferably≤0.0050wt.%; Control oxygen level≤0.0080wt.%, be preferably≤0.0050wt.%; Control hydrogen richness≤0.0004wt.%, be preferably≤0.0003wt.%.
The manufacture method of wear-resisting steel plate of the present invention, comprises the steps:
Smelt by above-mentioned chemical composition proportioning, obtain described wear-resisting steel plate through casting, heating, rolling and heat treatment step.Wherein, in heating steps, heating of plate blank is 1000-1250 DEG C to temperature, soaking time 2 ~ 3 hours; In milling step, adopt free rolling, roll rear air cooling; In heat treatment step, take Spheroidizing Annealing, annealing heating temperature is 650-850 DEG C, soaking time is 4-10 hour, and afterwards with stove naturally cooling, the microstructure of the wear-resisting steel plate obtained is Spheroidizing Annealing tissue, Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
Preferably, in heat-processed, slab heating temperature is 1050-1250 DEG C; More excellent, Heating temperature is 1080-1250 DEG C; Most preferred, Heating temperature is 1100-1250 DEG C.
Preferably, in milling step, roll rear stacking air cooling.
Preferably, in annealing heat treatment process, Heating temperature is 670-850 DEG C; Preferred, annealing heating temperature is 700-850 DEG C; Most preferred, annealing heating temperature is 720-850 DEG C.
The present invention also strictly controls the content of carbon and alloying element by reasonably designing chemical composition in steel, adopt medium high carbon low-alloy component system, the alloying elements such as appropriate interpolation copper and molybdenum, by the refinement strengthening effect of alloying element and the homogenization of annealing process, make the wear-resisting steel plate of acquisition have higher hardness and good wear resistance simultaneously, there is the excellent machining property such as easily cutting, therefore there is very strong suitability.
Wear-resisting steel plate of the present invention is compared with prior art mainly reflected in following several respects:
1, chemically composition is seen, the alloying constituent of wear-resisting steel plate of the present invention, based on medium high carbon low-alloy, makes full use of the strengthening of the elements such as C, Cu and Ni, malleableize effect, ensures that wear-resisting steel plate has preferably toughness and tenacity and wear resisting property etc.
2, from production technique, wear-resisting steel plate of the present invention adopts annealing process to produce, and by controlling suitable Heating temperature and soaking time, finally obtain structure refinement, nodularization, hardness is moderate, is especially easy to the wear-resisting steel plate processed.
3, from product performance, wear-resisting steel plate of the present invention has that hardness is moderate, toughness is better (typical mechanical property: Brinell hardness is greater than 250HB ,-20 DEG C of summers are greater than 40J than V-type impact of collision merit), especially has excellent machining property.
4, from microstructure, wear-resisting steel plate of the present invention, makes full use of alloying element and annealing process and combines and obtain the Spheroidizing Annealing tissue of fine uniform, be of value to mechanical property uniformity and workability.
In a word, wear-resisting steel plate of the present invention, while having good mechanical property, wear resistance, especially has features such as being easy to mechanical workout.
Accompanying drawing explanation
Fig. 1 is that the Spheroidizing Annealing of the wear-resisting steel plate of the embodiment of the present invention 7 organizes picture.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further elaborated, should be clear and definite, these embodiments only for the description to the specific embodiment of the present invention, and are not used in and form any restriction to protection scope of the present invention.
The wear-resisting steel plate of following examples 1-10 and the steel plate of comparative example 1, the weight percent of its chemical composition is as shown in table 1; The manufacture method of the wear-resisting steel plate of embodiment 1-10 and the steel plate of comparative example 1 is: carried out in accordance with the following steps successively by corresponding raw materials for metallurgy: smelting → casting → heating → rolling → thermal treatment, control the steel plate chemical element percent mass proportioning in each embodiment and comparative example 1, in heating steps, heating of plate blank is 1000-1250 DEG C to temperature; In milling step, adopt free rolling, roll rear air cooling; In heat treatment step, take Spheroidizing Annealing, annealing heating temperature is 650-850 DEG C, and soaking time is 4-10 hour, afterwards with stove naturally cooling; The concrete technology parameter of embodiment 1-10 is as shown in table 2.
Table 1 unit: weight percent
Table 2
1, mechanical property test
Carry out Mechanics Performance Testing to the wear-resisting steel plate of embodiment of the present invention 1-10 and comparative example 1, its result is as shown in table 3.
The mechanical property of table 3 embodiment 1-10 and comparative example 1
As can be seen from Table 4, the steel plate of embodiment 1-10, its Brinell hardness is greater than 250HB, illustrates that steel plate involved in the present invention has higher hardness, and is obviously better than comparative example 1; Its-20 DEG C of summers are 44-71J than V-type impact of collision merit, illustrate that this wear-resisting steel plate has preferably toughness, are obviously better than the steel plate of comparative example 1.
2, microstructure
The wear-resisting steel plate of embodiment 7 is carried out detection and obtain its microstructure, as shown in Figure 1, this microstructure is uniform Spheroidizing Annealing tissue, which ensure that steel plate has the processing characteristics of good mechanical property, wear resistance and excellence.
Wear-resisting steel plate of the present invention also strictly controls the content of carbon and alloy by each chemical composition of appropriate design, and by the wear-resisting steel plate heated and the technique such as thermal treatment of annealing obtains, there is higher hardness and wear resistance, there is machining property and the good low-temperature flexibilities such as easily cutting, there is very strong suitability.The wear-resisting steel plate that various embodiments of the present invention obtain, its microstructure is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
Claims (13)
1. a wear-resisting steel plate, the weight percent of its chemical composition is: C:0.60 ~ 0.75%, Si:0.10 ~ 0.50%, Mn:0.40 ~ 1.20%, P≤0.015%, S≤0.010%, Ni:0.50 ~ 1.50%, Cu:0.10 ~ 0.50%, Al:0.010 ~ 0.080%, Ca0.0010% ~ 0.0080%, N≤0.0080%, O≤0.0080%, H≤0.0004%, all the other are Fe and inevitable impurity; Its microstructure is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
2. wear-resisting steel plate as claimed in claim 1, is characterized in that, C:0.62 ~ 0.75%; Si:0.10 ~ 0.40%, by weight percentage.
3. wear-resisting steel plate as claimed in claim 1, is characterized in that, Mn:0.40 ~ 1.00%; Ni:0.50 ~ 1.00%; Cu:0.10 ~ 0.40%, by weight percentage.
4. wear-resisting steel plate as claimed in claim 1, is characterized in that, Al:0.020-0.080%; 0.0010%≤Ca≤0.0050%, by weight percentage.
5. wear-resisting steel plate as claimed in claim 1, is characterized in that, P≤0.012%; S≤0.005%; N≤0.0050%; O≤0.0050%; H≤0.0003%, by weight percentage.
6. the manufacture method of the wear-resisting steel plate as described in as arbitrary in claim 1-5, smelts by above-mentioned chemical composition proportioning, obtains described wear-resisting steel plate through casting, heating, rolling and thermal treatment; Wherein, in heating steps, Heating temperature is 1000-1250 DEG C, insulation 2-3 hour; In milling step, adopt free rolling, roll rear air cooling; In heat treatment step, adopt Spheroidizing Annealing, annealing heating temperature is 650-850 DEG C, and insulation 4-10 hour, with stove naturally cooling; The microstructure of the wear-resisting steel plate obtained is Spheroidizing Annealing tissue, and Brinell hardness is greater than 250HB, and-20 DEG C of summers are greater than 40J than V-type impact of collision merit.
7. the manufacture method of wear-resisting steel plate as claimed in claim 6, it is characterized in that, in heating steps, slab heating temperature is 1050-1250 DEG C.
8. the manufacture method of wear-resisting steel plate as claimed in claim 6, it is characterized in that, in heating steps, Heating temperature is 1080-1250 DEG C.
9. the manufacture method of wear-resisting steel plate as claimed in claim 6, it is characterized in that, in heating steps, Heating temperature is 1100-1250 DEG C.
10. the manufacture method of wear-resisting steel plate as claimed in claim 6, is characterized in that, in milling step, roll rear stacking air cooling.
The manufacture method of 11. wear-resisting steel plates as claimed in claim 6, is characterized in that, in heat treatment step, annealing heating temperature is 670-850 DEG C.
The manufacture method of 12. wear-resisting steel plates as claimed in claim 6, is characterized in that, in annealing heat treatment process, annealing heating temperature is 700-850 DEG C.
The manufacture method of 13. wear-resisting steel plates as claimed in claim 6, is characterized in that, in annealing heat treatment process, annealing heating temperature is 720-850 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105151.9A CN103160742B (en) | 2013-03-28 | 2013-03-28 | A kind of wear-resisting steel plate and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105151.9A CN103160742B (en) | 2013-03-28 | 2013-03-28 | A kind of wear-resisting steel plate and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103160742A CN103160742A (en) | 2013-06-19 |
| CN103160742B true CN103160742B (en) | 2016-03-30 |
Family
ID=48584272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310105151.9A Active CN103160742B (en) | 2013-03-28 | 2013-03-28 | A kind of wear-resisting steel plate and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103160742B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4159010B2 (en) * | 1999-09-13 | 2008-10-01 | 日新製鋼株式会社 | Mowing blade substrate |
| CN102137947A (en) * | 2008-10-31 | 2011-07-27 | 新日本制铁株式会社 | Pearlite rail having superior abrasion resistance and excellent toughness |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5425736B2 (en) * | 2010-09-15 | 2014-02-26 | 株式会社神戸製鋼所 | Bearing steel with excellent cold workability, wear resistance, and rolling fatigue properties |
| KR20130048798A (en) * | 2010-11-29 | 2013-05-10 | 제이에프이 스틸 가부시키가이샤 | Bearing steel exhibiting excellent machinability after spheroidizing annealing and excellent resistance to hydrogen fatigue after quenching/tempering |
-
2013
- 2013-03-28 CN CN201310105151.9A patent/CN103160742B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4159010B2 (en) * | 1999-09-13 | 2008-10-01 | 日新製鋼株式会社 | Mowing blade substrate |
| CN102137947A (en) * | 2008-10-31 | 2011-07-27 | 新日本制铁株式会社 | Pearlite rail having superior abrasion resistance and excellent toughness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103160742A (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103205650B (en) | A kind of heat-resistant antifriction steel plate and manufacture method thereof | |
| CN103205634B (en) | A kind of low-alloy high hardness wear-resisting steel plate and manufacture method thereof | |
| CN103205627B (en) | A kind of Low-alloy high-performance wear-resistant steel plate and manufacture method thereof | |
| CN103667953B (en) | A kind of low environment crack sensitivity ultra-high strength and toughness marine mooring chain steel and manufacture method thereof | |
| CN100455692C (en) | High-strength weathering steel and method of manufacturing same | |
| CN103146997B (en) | A kind of low-alloy high-flexibility wear-resistant steel plate and manufacture method thereof | |
| CN103361547B (en) | A kind of production method of cold formability ultrahigh-strength steel plates and steel plate | |
| CN101519751B (en) | High-performance marine mooring chain steel and manufacturing method thereof | |
| CN105002425B (en) | Superhigh intensity superhigh tenacity oil casing pipe steel, petroleum casing pipe and its manufacture method | |
| CN109136737A (en) | A kind of tensile strength 1100MPa grades of ultra-high strength and toughness steel and its manufacturing method | |
| CN103103441B (en) | Pressure container steel with high toughness at -140 DEG C and production method thereof | |
| CN107130171B (en) | A kind of middle low carbon high-strength high-ductility corrosion bainitic steel, rail and preparation method | |
| CN107326302B (en) | A kind of anti-corrosion bainitic steel, rail and preparation method | |
| CN111074148B (en) | 800 MPa-level hot stamping axle housing steel and manufacturing method thereof | |
| CN102747282A (en) | High-hardness high-tenacity wear-resistant steel plate and production method thereof | |
| CN103981459B (en) | A kind of high-strength fireproof anti-seismic structure steel and production method | |
| CN103088269B (en) | Pressure container steel having high toughness at -120 DEG C, and its production method | |
| CN104294161B (en) | A kind of for high temperature resistant Cutting free high-strength steel | |
| CN106435360A (en) | High-strength, high-toughness, corrosion-resistant and weather-resistant steel plate and manufacturing method thereof | |
| CN105441788B (en) | Containing 12.9 grades of track traffic Mobile Equipment steel for fastener of vanadium and its Technology for Heating Processing | |
| CN108048741A (en) | hot rolled bainite steel rail and preparation method thereof | |
| CN104962833B (en) | A kind of mooring chain steel of R4 containing vanadium and its Technology for Heating Processing and production method | |
| CN110055470B (en) | Container corner fitting and heat treatment process thereof | |
| JP3539250B2 (en) | 655 Nmm-2 class low C high Cr alloy oil country tubular good with high stress corrosion cracking resistance and method of manufacturing the same | |
| JPH064889B2 (en) | Method for manufacturing thick ultra high strength steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |