CN103667992A - Steel plate with high hardness and abrasion resistance - Google Patents
Steel plate with high hardness and abrasion resistance Download PDFInfo
- Publication number
- CN103667992A CN103667992A CN201310703320.9A CN201310703320A CN103667992A CN 103667992 A CN103667992 A CN 103667992A CN 201310703320 A CN201310703320 A CN 201310703320A CN 103667992 A CN103667992 A CN 103667992A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- hardness
- steel
- resistant steel
- wear
- 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.)
- Granted
Links
Images
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a steel plate with high hardness and abrasion resistance. The steel plate is mainly used for manufacturing pipelines of ships for cleaning sludge and river sand. The steel plate of the invention is characterized by comprising the following chemical constituents: 0.67-0.73 C, 0.17-0.37 Si, 1.4-1.8 Mn, 0.02-0.04 Al, 0.08-0.16 V, 1.3-1.5 Cr, 0.3-0.5Ni, 0.15-0.25 Mo, 0-0.025 P, 0-0.010 S, 0-0.20 Cu, 0-0.0120 [N], 0-0.0030 [O] and the balance of Fe. The manufacturing method comprises the steps of smelting, rolling, heat treatment and water cooling; the final quenching temperature of the steel plate is between 850 DEG C and 870 DEG C, and the soaking time is between 60 min and 120 min. The steel plate realizes the high hardness requirement, is good in abrasion resistance, and meets the use requirements.
Description
Technical field
The present invention relates to a kind of high-hardness wear-resistant steel plate materials and manufacture method thereof.Mainly for the manufacture of the pipeline peculiar to vessel of cleaning mud and river sand, and other anti-abrasive materials.
Technical background
Clear up at present the pipeline peculiar to vessel of mud and river sand, extensively utilize that clad steel plate is curling to be formed, this composition board is composited by wear-resisting steel plate and the Hi-Stren steel with certain antiwear characteristic, and the more typical wear-resisting steel plate that adopts is the carbon constructional quality steels such as 60Mn of GB/T 711 defineds, its shortcoming is that hardness is lower, and normalizing state hardness is not higher than 30HRC, wear no resistance, desertification stone impact abrasion performance is not high, and cause pipeline normally to use just needs to change for 3-5 days, causes resource significant wastage.Therefore, be badly in need of a kind of novel wear resistant steel plate of exploitation, this wearing plate need have higher hardness, and meanwhile, for ease of being curled into pipe, this steel plate also requires certain process industrial art performance.
Traditional carbon constructional quality steel hot-rolled steel sheet low prices such as 60Mn, but its not containing or the carbide such as the Cr, the Mo that contain minute quantity, V form alloying element, hardness is lower, can not effectively meet the hardness requirement of high-level wear-resistant steel plate.Design a kind of applicable alloying combination, be aided with suitable steel rolling, thermal treatment process, in steel matrix, form a large amount of hard phase---carbon compounds, with this, promote the hardness of wear-resisting steel plate, thereby increase steel plate antiwear property, become one of high-level wear-resistant steel plate urgent problem of exploitation.
Because tube-making process needs, novel high-hardness wear-resistant steel plate also must possess certain can process industrial art performance, rely on suitable thermal treatment process to give play to the Potential performance of material, under different as-heat-treated condition, steel plate has corresponding, suitable process industrial art performance.In tubulation process, steel plate completes product processing respectively under a plurality of as-heat-treated condition, and novel high-hardness wear-resistant steel plate alloy content comparative good-quality structural carbon steel is higher, therefore extremely narrow to the interval requirement of thermal treatment process, realize the narrow interval thermal treatment of novel high-hardness wear-resistant steel plate, meeting production technique performance index, is the problem another in the urgent need to address of the novel high-hardness wear-resistant steel plate of invention.
Summary of the invention
The object of the present invention is to provide a kind of high-hardness wear-resistant steel plate, this steel plate can be used for manufacturing the pipeline peculiar to vessel of cleaning mud and river sand, overcomes conventional carbon constructional quality steel hardness low, and the shortcoming that wear resistance is weak reduces the consumption of material, improving production efficiency; In addition, this steel plate also can be used for other occasions that steel plate hardness requirement is higher, as shot-blasting machine interior lining panel, mining machinery etc.
The object of the present invention is achieved like this:
High-hardness wear-resistant steel plate materials comprises the chemical composition of following mass percent: C 0.67-0.75, Si 0.17-0.37; Mn 1.4-1.8; Al 0.02-0.04; V 0.08-0.16; Cr 1.3-1.5; Ni 0.3-0.5; Mo 0.15-0.25; P≤0.025; S≤0.010; Cu≤0.20, [N]≤0.0120, [O]≤0.0030, surplus is Fe and inevitable impurity.
The concrete production stage of this steel plate is: electric furnace-refining-vacuum outgas-die casting-slow cooling-rolling-thermal treatment-essence inspection-Performance Detection-packing warehouse-in.
1050 ℃ ± 10 ℃ of the start rolling temperatures of rolling.
Described thermal treatment process, wherein tempering temperature is 660 ± 10 ℃, soaking time (hX4min/mm ± 10min), h is thickness of slab, air cooling; 850 ℃-870 ℃ of quenching temperatures, soaking time 60min-120min, water-cooled.
The active chemical design of high-hardness wear-resistant steel plate materials of the present invention according to and limit the reasons are as follows of content range:
C is the wear-resistant iron and steel hardness of impact, the most important element of toughness.Carbon content is high, and corresponding carbide quantity is many, and the hardness of material is high, and abrasion resistance properties is superior, but toughness drop, processing difficulties, and in use easily broken; Vice versa.In order to guarantee that this steel plate can obtain the good spherodized structure of toughness in heat treatment process, and in the course of processing, do not occur defects i.e.cracks, so C content is strict controlled in eutectoid steel scope, with 0.67-0.75, is advisable.
Mn is a kind of useful element in ferrous materials.In this steel, manganese major part is dissolved in ferrite, forms substitutional solid solution, and makes ferrite strengthening, and small part manganese is dissolved in Fe3C, forms alloyed cementite, improves the intensity of steel; Meanwhile, Mn can become MnS with steel inclusion S chemical combination, to alleviate the deleterious effect of S.The scope of Mn content of the present invention is defined as 1.40-1.80%;
V is the forming element of carbide and nitride.The effect of V is by forming V(C, N) affect tissue and the performance of steel, mainly Precipitation in the ferrite of austenite grain boundary can suppress austenitic recrystallize and stop grain growth in the operation of rolling, thereby plays intensity and the toughness of refinement ferrite crystal grain, raising steel.
Cr is medium carbide forming element, can significantly improve intensity, hardness and wear resistance.During heating, dissolve in austenitic Cr and strongly improve hardening capacity.Cr in steel, part displacement iron forms alloyed cementite, improves stability; A part is dissolved in ferrite, produces solution strengthening, improves ferritic intensity and hardness.Too high Cr content has reduced plasticity and the toughness of steel.The scope of Cr content of the present invention is defined as 1.30～1.50%;
Ni is non-carbide forming element.Ni is present in steel with solid solution form.While being used in conjunction with Cr, can significantly improve the hardening capacity of steel.Ni reduces the C content of eutectoid point, increases pearlitic volume fraction, is conducive to improve intensity.Ni reduces Ar3 transition temperature, and ferrite crystal grain is attenuated, and meanwhile, can make perlite sheet spacing reduce, and is conducive to the raising of toughness.The scope of Ni content of the present invention is defined as 0.30-0.50%;
Mo is present in steel with the form of sosoloid and carbide.Mo is Solid Solution Strengthened Steel body effectively, improves hardening capacity and the temper resistance of steel, can also crystal grain thinning, and improve carbide ununiformity, thereby improve intensity and the toughness of steel.The scope of Mo content of the present invention is defined as 0.15～0.25%;
The selection of the technological condition of manufacture method of the present invention is according to being: select high quenching temperature (Ac3 temperature is 777 ℃), the abundant Solid solution precipitation of mainly useful for carbide, the homogeneity of raising steel body hardness and tissue.
Compared with prior art, the invention has the beneficial effects as follows:
This steel plate hardness, significantly higher than conventional carbon constructional quality steel hot-rolled steel sheet, has promoted the wear resisting property of steel plate greatly, and this steel plate technique excellent property can meet the crooked requirement of tubulation, has met the service requirements of product.Patent of the present invention is by rational manufacture method and processing parameter, final inner-walls of duct surface rockwell hardness 65-75HRC, and desertification stone impact abrasion performance is strong, meets user's requirement.
Accompanying drawing explanation
Fig. 1 is the final 50mm Plate Steel quenching heat treatment process curve figure of the inventive method.
Fig. 2 is this steel grade intensification and temperature-fall period transformation curve
Fig. 3 is 2000 times of SEM photos after 660 ℃ of tempering.
Fig. 4 is 500 times of metallographs after 660 ℃ of tempering.
Fig. 5 is 2000 times of SEM photos after 740 ℃ of annealing.
Embodiment
The production of a kind of high-hardness wear-resistant steel plate the present invention relates to, chemical composition is C0.67-0.75, Si0.17-0.37; Mn1.4-1.8; Al0.02-0.04; V0.08-0.16; Cr1.3-1.5; Ni0.3-0.5; Mo0.15-0.25; P≤0.025; S≤0.010; Cu≤0.20, [N]≤0.0120, [O]≤0.0030, surplus is Fe and inevitable impurity, the embodiment in specifically can seeing table:
| Composition | C | Si | Mn | Al | P | S | Cr | Mo | Ni | Cu | V | Fe |
| Implement | 0.69 | 0.23 | 0.1.58 | 0.025 | 0.016 | 0.003 | 1.39 | 0.20 | 0.41 | 0.08 | 0.12 | Surplus |
The manufacture method of the middle-and-high-ranking other wear resisting steel of above-described embodiment is: electric furnace-refining-vacuum outgas-die casting-slow cooling-rolling-thermal treatment-essence inspection-Performance Detection-packing warehouse-in.
Its thermal treatment comprises tempering, annealing and quenching, 850 ℃-870 ℃ of described quenching temperatures, soaking time 60min-120min, water-cooled.
The optimum condition of above-mentioned thermal treatment process is: quenching temperature is 850 ℃, soaking time 90min, and water-cooled, referring to Fig. 1.
The resulting steel plate of this invention, according to the salient features of this steel plate, naming it is " excellent hard 70 ", looks like for high-quality high rigidity steel plate, hardness reaches 70 ± 5HRC.
product result of use
Conventional sediment delivery pipe peculiar to vessel life-span of operating at full capacity is 6-10 days; Take the sediment delivery pipe peculiar to vessel life-span 60-80 days that " excellent hard 70 " be main raw material; The conventional shot-blasting machine interior lining panel Mn13 cast iron life-span is 10-15 days, take " excellent hard 70 " as the shot-blasting machine backing plate of main raw material, and the life-span reaches 120 days.
Claims (4)
1. a high-hardness wear-resistant steel plate, is characterized in that: institute's invention steel plate chemical composition is C 0.67-0.75, Si 0.17-0.37; Mn 1.4-1.8; Al 0.02-0.04; V 0.08-0.16; Cr 1.3-1.5; Ni 0.3-0.5; Mo 0.15-0.25; P≤0.025; S≤0.010; Cu≤0.20; [N]≤0.0120; [O]≤0.0030; Surplus is Fe and inevitable impurity.
2. manufacture the method for a kind of high-hardness wear-resistant steel plate as claimed in claim 1, it is characterized in that: described manufacture method comprises hot rolling and thermal treatment process; Described thermal treatment process, wherein tempering temperature is 660 ± 10 ℃, soaking time hX4min/mm ± 10min, h is thickness of slab, air cooling; 850 ℃-870 ℃ of quenching temperatures, soaking time 60min-120min, water-cooled.
3. the manufacture method of a kind of high-hardness wear-resistant steel plate according to claim 2, is characterized in that: 1050 ℃ ± 10 ℃ of the start rolling temperatures of described hot rolling.
4. the manufacture method of a kind of high-hardness wear-resistant steel plate according to claim 2, is characterized in that: the concrete steps of described method are: electric furnace-refining-vacuum outgas-die casting-slow cooling-rolling-thermal treatment-essence inspection-Performance Detection-packing warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703320.9A CN103667992B (en) | 2013-12-20 | 2013-12-20 | A kind of high-hardness wear-resistant steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703320.9A CN103667992B (en) | 2013-12-20 | 2013-12-20 | A kind of high-hardness wear-resistant steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103667992A true CN103667992A (en) | 2014-03-26 |
| CN103667992B CN103667992B (en) | 2015-07-29 |
Family
ID=50306760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310703320.9A Active CN103667992B (en) | 2013-12-20 | 2013-12-20 | A kind of high-hardness wear-resistant steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103667992B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949984A (en) * | 2014-04-10 | 2014-07-30 | 大丰市飞腾铸造机械有限公司 | Manufacturing method and welding method for wear-resistant shock-resistant shakeout pipe |
| CN104087842A (en) * | 2014-06-26 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Medium-chromium wear-resistant lining board |
| WO2021035898A1 (en) * | 2019-08-24 | 2021-03-04 | 湖南长重机器股份有限公司 | Wear-resistant lining plate of bucket wheel machine hopper, and preparation method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793402A (en) * | 2005-12-29 | 2006-06-28 | 攀枝花钢铁(集团)公司 | Pearlite high-strength low-alloy rail steel and production method thereof |
| JP2009091649A (en) * | 2007-04-05 | 2009-04-30 | Kobe Steel Ltd | Forging steel, forging and crankshaft |
-
2013
- 2013-12-20 CN CN201310703320.9A patent/CN103667992B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793402A (en) * | 2005-12-29 | 2006-06-28 | 攀枝花钢铁(集团)公司 | Pearlite high-strength low-alloy rail steel and production method thereof |
| JP2009091649A (en) * | 2007-04-05 | 2009-04-30 | Kobe Steel Ltd | Forging steel, forging and crankshaft |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949984A (en) * | 2014-04-10 | 2014-07-30 | 大丰市飞腾铸造机械有限公司 | Manufacturing method and welding method for wear-resistant shock-resistant shakeout pipe |
| CN104087842A (en) * | 2014-06-26 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Medium-chromium wear-resistant lining board |
| CN104087842B (en) * | 2014-06-26 | 2016-09-07 | 宁国市正兴耐磨材料有限公司 | Chromium abrasion-proof backing block in one |
| WO2021035898A1 (en) * | 2019-08-24 | 2021-03-04 | 湖南长重机器股份有限公司 | Wear-resistant lining plate of bucket wheel machine hopper, and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103667992B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2015353251B2 (en) | Low-alloy high-strength high-tenacity steel panel and method for manufacturing same | |
| CN104032221B (en) | A kind of Nb-microalloying high-carbon-chromium bearing steel and hot rolling production method thereof | |
| CN101440461B (en) | A kind of oil well gas corrosion-resistant sucker rod steel and its manufacturing method | |
| CN102392186B (en) | Manufacturing method of HB500 grade low-manganese wear-resistant steel plate | |
| CN103290339B (en) | High-strength steel plate for 800MPa hydropower station pressure pipeline and production method thereof | |
| CN102912228B (en) | Economical high-strength low-yield-ratio pipe fitting steel and production method thereof | |
| CN102912250B (en) | Economical low-yield-ratio pipe fitting steel for oil and gas transmission and production method thereof | |
| CN101487102A (en) | Non-molybdenum non-nickel middle chrome wear resistant steel casting and heat treatment method thereof | |
| CN113930670B (en) | Low-cost NM400 hot-rolled wear-resistant steel plate and production method thereof | |
| CN102618791A (en) | High strength and ductility oil casing with hydrogen sulfide corrosion resistance and manufacturing method for oil casing | |
| CN110777295A (en) | A kind of hot-rolled steel strip for diamond saw blade base and its manufacturing method | |
| CN101849028B (en) | High tensile steel for deep drawing and manufacturing method thereof | |
| CN106480375A (en) | High-strength resistance welding sleeve and manufacturing method thereof | |
| CN103898299A (en) | Preparation method for 2400MPa class low-cost nano bainitic steel | |
| CN108930002B (en) | Abrasion-resistant steel plate for slurry dredging pipe with hardness of 500HB and production method thereof | |
| CN103667992B (en) | A kind of high-hardness wear-resistant steel plate | |
| CN103498103A (en) | High-hardenability big-diameter 65MnCr grinding ball and preparation method thereof | |
| CN104087824B (en) | A kind of preparation method with the hyperfine structure bainitic steel of TRIP effect | |
| CN104294156B (en) | A kind of economy the excellent high-carbon wear-resistant steel pipe of processing characteristics and production method | |
| CN108930001B (en) | High-hardness abrasion-resistant steel plate for slurry dredging and production method thereof | |
| CN103882335B (en) | Hot-rolled high-strength steel with yield strength of 800MPa and production method thereof | |
| CN105220073A (en) | Hot-rolled strip steel for rake blades, production method and rake blade treatment method | |
| CN100545290C (en) | A heat-free ultra-fine-grain D-grade sucker rod steel and its production method | |
| CN108950421B (en) | Abrasion-resistant steel plate for slurry dredging pipe with hardness of 600HB and production method thereof | |
| CN111363983A (en) | Super martensitic stainless steel with ultrahigh strength and toughness and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |