CN105018853A - Low-alloy wear-resistant steel used for wet-type abrasion and heat treatment technology for low-alloy wear-resistant steel - Google Patents
Low-alloy wear-resistant steel used for wet-type abrasion and heat treatment technology for low-alloy wear-resistant steel Download PDFInfo
- Publication number
- CN105018853A CN105018853A CN201510381981.3A CN201510381981A CN105018853A CN 105018853 A CN105018853 A CN 105018853A CN 201510381981 A CN201510381981 A CN 201510381981A CN 105018853 A CN105018853 A CN 105018853A
- Authority
- CN
- China
- Prior art keywords
- steel
- alloy
- low
- 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
Abstract
The invention provides low-alloy wear-resistant steel for wet-type abrasion and the heat treatment technology for the low-alloy wear-resistant steel. The steel comprises the following elements in percentage by weight: 0.28-0.32% of C, 1.3-1.7% of Cr, 0.3-0.5% of Cu, 0.3-0.6% of Mo, 1.0-1.5% of Mn, 0.7-1.0% of Ni, 0.5-0.8% of Si, 0.04-0.08% of Nb, 0.06-0.1% of V and the balance of Fe and unavoidable impurities. An annealing process comprises the following steps: the steel is charged in a furnace at a temperature below 200 DEG C; the temperature is increased to 700 DEG C at a heating rate smaller than or equal to 80 DEG C/h and remains unchanged; then the steel is subjected to furnace cooling to 250 DEG C after heat preservation; and the steel is subjected to air cooling out of furnace. Then the steel is subjected to quenching heat treatment which comprises the following steps: the steel is charged into the furnace at a temperature below 200 DEG C; the temperature is increased to 900 DEG C at a heating rate smaller than or equal to 80 DEG C/h and remains unchanged; and then the steel is subjected to oil quenching. The steel is also subjected to tempering heat treatment which comprises the following steps: the steel is charged into the furnace at a temperature below 200 DEG C; the temperature is increased to 300 DEG C at a heating rate smaller than or equal to 80 DEG C and remains unchanged; and then the steel is subjected to air cooling out of furnace. The alloy steel disclosed by the invention not only has high strength, high hardness, good toughness and excellent wear-resistance, but also has certain anti-corrosion performance. By adopting the annealing heat treatment process provided by the invention, the processing performance of the alloy steel can be improved, so that the material can obtain performance indexes meeting requirement.
Description
Technical field
What the present invention relates to is a kind of wear resisting steel, specifically a kind of low-alloy wear-resistant steel for wet type wearing and tearing.The present invention also relates to a kind of heat-treatment technology method of low-alloy wear-resistant steel.
Background technology
Wet type low-alloy wear-resistant steel may be used for the lining material of wet-type ball mill conventional in mining industry or the sawtooth material etc. of excavator.In the wet-milling operating mode fields such as mining, power station, port construction and waterway dredging, wearing and tearing all bring extremely huge loss to practical engineering application always.Wear parts in machine, except being worn, also will be subject to corrosive nature under wet type environment, under corrosive wear interaction, abrasion loss more can improve several times, greatly reduces the work-ing life of the even whole equipment of high-abrasive material in equipment, reduces production efficiency.
At present, in alloy abrasion resistant steel, the high mangaenese steel being mainly main adding elements based on C, Mn, Cr etc., if publication number is " a kind of corrosion-resistant and abrasion-resistant steel and preparation method thereof " disclosed in the patent documentation of CN 101886225 B, its steel with C, Mn, Mo and Cr for main alloy element, the percentage composition of manganese, 14% ~ 16%, belongs to high mangaenese steel.Main preparation section is 1590 DEG C of casting formings, water-tenacity treatment after 1050 ~ 1080 DEG C of austenitizings, due to adding of the microalloy elements such as Pr, Nd, Gd and Dy, while the comprehensive mechanical property improving material and corrosion-proof wear, also substantially increase production cost.Publication number is disclose in the patent document of CN 103114252 B " a kind of method of liner plate low-alloy wear-resistant steel ", the method substantially increases the intensity of low-alloy wear-resistant steel, hardness and impact property, there is higher wear resistance simultaneously, but melting and smelting technology operation more, reduce the efficiency of suitability for industrialized production.Publication number is disclose in the patent document of CN101397632B " a kind of multielement low-alloy water quenching abrasion resistant steel C30CrMn2SiMoTiV ", and this material is a kind of multi-element low-alloy steel, can be used for the aspects such as grinder hammerhead, dental lamina and forklift teeth.
At present, although the Performance comparision of existing many wear-resisting alloy steels is excellent, but the alloying element contained by it is as relatively high in the content of Ni, Cr, cost is higher, add fund input, be unfavorable for that engineering is promoted and improves the performance of enterprises, therefore, the New-type wear-resistant alloy steel that development can better adapt to the high-performance and low-cost of many bad working environments is the important directions of this area development, the novel low-alloy wear-resistant steel that the present invention develops for this situation just and thermal treatment process thereof.
Summary of the invention
The object of the present invention is to provide and a kind of not only there is high strength, high rigidity, good toughness and superior abrasion resistance, but also there is the low-alloy wear-resistant steel for wet type wearing and tearing of certain corrosion resistance nature.The present invention also aims to provide a kind of processing characteristics can improving steel alloy, material can be made to obtain the thermal treatment process of the low-alloy wear-resistant steel for wet type wearing and tearing of satisfactory performance index.
The element wt ratio of the low-alloy wear-resistant steel for wet type wearing and tearing of the present invention is: the Fe of C:0.28-0.32%, Cr:1.3-1.7%, Cu:0.3-0.5%, Mo:0.3-0.6%, Mn:1.0-1.5%, Ni:0.7-1.0%, Si:0.5-0.8%, Nb:0.04-0.08%, V:0.06-0.1%, surplus and inevitable impurity.
The preferred elements weight ratio of the low-alloy wear-resistant steel for wet type wearing and tearing of the present invention is: the Fe of C:0.30%, Cr:1.50%, Cu:0.45%, Mo:0.50%, Mn:1.20%, Ni:0.95%, Si:0.70%, Nb:0.04%, V:0.08%, surplus and inevitable impurity.
The thermal treatment process of the low-alloy wear-resistant steel for wet type wearing and tearing of the present invention is: adopt annealing process to heat-treat cast alloy steel, described annealing process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated at 700 DEG C, 250 DEG C are cooled to the furnace, air cooling of coming out of the stove after insulation; Carry out quenching heat treatment to the part after processing, quenching technology is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, insulation at 900 DEG C, rear oil quenching; Finally carry out tempering heat treatment, tempering process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated at 300 DEG C, after to come out of the stove air cooling.
The high-performance low-alloy wear resisting steel used under the invention provides a kind of wet type operating mode, this steel alloy not only has high strength, high rigidity, good toughness and superior abrasion resistance, also has certain corrosion resistance nature.Special interpolation Nb, V two kinds of elements, form MC type carbide for Nb, V, can produce dispersion-strengthened in heat treatment process, greatly improve martensite wear-resistant Steel Properties.Present invention also offers a kind of annealing heat treatment process being suitable for this steel alloy and producing, to improve the processing characteristics of this steel alloy, carry out quenching+tempering thermal treatment subsequently, obtain satisfactory performance index to make material.
The present invention is the design of material carried out according to applying working condition and the performance index of material, and has carried out experiment test and process optimization to invention material, to obtain martensitic stucture for target, has excellent mechanical property.Carbon content is selected within the scope of medium carbon steel, both ensure that the intensity of material, takes into account again the toughness of material, adopts with Mn for Ni, reduces the production cost of material with Cu for the method for Cr, adopts the mode of Nb, V complex intensifying, improves the strength of materials.
Adopt the wear resisting steel that the preferred chemical composition of the present invention obtains, the as-cast structure of material is perlite and ferritic mixed structure, and hardness is about 38HRC.After heat treatment, the wear-resisting alloy steel tempered structure mainly tempered martensite that obtains, hardness value is at 51 ~ 53HRC, and tensile strength reaches 1600MPa, and impelling strength is 57.4J/cm
2, there is good comprehensive mechanical property, and have good wear resistance and solidity to corrosion, meet the service requirements of material in wet-type ball mill substrate material.
Accompanying drawing explanation
Fig. 1 is preparation and the thermal treatment process schema of the low-alloy wear-resistant steel of wet type wearing and tearing.
Fig. 2 is the low-alloy wear-resistant steel drawing of rough casting of wet type wearing and tearing.
Fig. 3 is the as-cast structure of the low-alloy wear-resistant steel of wet type wearing and tearing.
Fig. 4 is the Annealed microstructure of the low-alloy wear-resistant steel of wet type wearing and tearing.
Fig. 5 is the tempering state tissue of the low-alloy wear-resistant steel of wet type wearing and tearing.
Fig. 6 is the wear map of the low-alloy wear-resistant steel of wet type wearing and tearing.
The friction coefficient time variations that Fig. 7 is load when being 20N.
The friction coefficient time variations that Fig. 8 is load when being 30N.
The friction coefficient time variations that Fig. 9 is load when being 40N.
Figure 10 is the average friction coefficient under different loads.
Figure 11 is the low-alloy wear-resistant steel of wet type wearing and tearing and the mass loss during abrasion of ZGMn13 steel.
Figure 12 is wear rate experimental data table.
Embodiment
Illustrate below and the present invention is described in more detail.
Its alloying element weight ratio is: C:0.28-0.32%, Cr:1.3-1.7%, Cu:0.3-0.5%, Mo:0.3-0.6%, Mn:1.0-1.5%, Ni:0.7-1.0%, Si:0.5-0.8%, Nb:0.04-0.08%, V:0.06-0.1%, and surplus is Fe.Preferably, alloy abrasion resistant steel of the present invention, its alloying element weight ratio is: C is 0.30%, Cr is 1.50%, Cu is 0.45%, Mo be 0.50%, Mn be 1.20%, Ni is 0.95%, Si is 0.70%, Nb be 0.04%, V is 0.08%, and surplus is Fe and inevitable impurity.
Prepare burden according to above-mentioned alloy composition, through melting, casting, annealing thermal treatment, mechanical workout and quenching+tempering heat treatment step, obtain the low-alloy wear-resistant steel meeting this materials'use condition background.Process flow sheet as shown in Figure 1.Its preparation method specifically realizes according to the following steps: 1), by the preferred selection of chemical composition of design wear-resisting alloy steel prepare burden; 2), raw material good for proportioning is carried out melting, casting.Wherein melting equipment can adopt common intermediate frequency induction melting furnace, vacuum induction melting furnace or arc-melting furnace to carry out melting, obtains foundry goods as shown in Figure 2; 3), adopt annealing process to heat-treat cast alloy steel, object improves the machining property of material.Annealing process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated, cools to 250 DEG C with the furnace, air cooling of coming out of the stove, and carry out mechanical workout according to the dimensional requirement of part after insulation at 700 DEG C; 4), to the steel alloy after processing carry out quenching heat treatment, technique is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, insulation at 900 DEG C, rear oil quenching; 5), finally carry out tempering heat treatment to material, tempering process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated at 300 DEG C, after to come out of the stove air cooling, finally obtain the alloy abrasion resistant steel met under the wet-milling working condition requirement of chemical composition of the present invention.
Furnace charge is selected to comprise: the pig iron, steel scrap, ferrosilicon, ferromanganese, extra low carbon ferrochromium, ferro-niobium, vanadium iron etc.Concrete one-tenth bulk-breaking table 1, after batching, each furnace charge formation and weight are in table 2.
Table 1 furnace charge chemical composition (wt%)
| Furnace charge title | C | Si | Mn | Cr | Ni | Mo | Nb | Cr | V | Cu |
| The pig iron | 4.34 | 0.83 | 0.19 | |||||||
| Steel scrap | 0.0014 | 0.026 | 0.15 | |||||||
| Ferrosilicon | 0.2 | 73.24 |
| Ferromanganese | 0.28 | 1.73 | 80.8 | |||||||
| Extra low carbon ferrochromium | 0.059 | 0.92 | 58.1 | |||||||
| Ferro-niobium | 0.05 | 2.82 | 58.3 | |||||||
| Vanadium iron | 0.13 | 1.65 | 50.5 | |||||||
| Electrolytic copper | 99.96 |
Table 2 furnace charge is formed and weight (kg)
(2) adopt common intermediate frequency induction melting method to obtain alloy abrasion resistant steel, make 10 clover leaf coupons with 60kg molten steel, adopt SPECTRO-MAX
xdirect-reading spectrometer has carried out check analysis to the clover leaf coupon after cast, and result is as shown in table 3.The alloying constituent that melting obtains is in the scope of claim 1.
Table 3 foundry goods and the actual chemical composition content of coupon (wt%)
| C | Cr | Cu | Mo | Mn | Ni | Si | Nb | V |
| 0.305 | 1.504 | 0.45 | 0.479 | 1.111 | 0.944 | 0.695 | 0.045 | 0.092 |
(3) adopt annealing process to heat-treat cast alloy steel, object improves the machining property of material.Annealing process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated 5h (soaking time suitably adjusts according to specimen size and process furnace setting-out mode), cools to 250 DEG C after insulation with the furnace at 700 DEG C, to come out of the stove air cooling, and carry out mechanical workout according to the dimensional requirement of part.
(4) carry out quenching heat treatment to the steel alloy after processing, technique is: less than 200 DEG C shove charges, and heat-up rate≤80 DEG C/h, be incubated for some time at 900 DEG C, concrete soaking time suitably adjusts according to specimen size and process furnace setting-out mode, then oil quenching.
(5) finally carry out tempering heat treatment to material, tempering process is: less than 200 DEG C shove charges, and heat-up rate≤80 DEG C/h, is incubated 2h at 300 DEG C, after to come out of the stove air cooling, finally obtain the alloy abrasion resistant steel met under the wet-milling working condition requirement of chemical composition of the present invention.
Analyze the mechanical property after thermal treatment, rockwell hardness testing chooses 6-8 point, gets its average; Tensile impact, adopts three to draw three to rush principle, averages.The hardness of cast form obtaining material is 38.3HRC, and annealed state hardness is 29.6HRC, and the mechanical property after final tempering is as follows: hardness is 51.6HRC, and tensile strength is 1600MPa, and unit elongation is 5.2%, and impelling strength is 57.4J/cm
2.
Utilize ZEISS200MAT type metaloscope, observe the as cast condition of low-alloy wear-resistant steel of the present invention, annealed state and tempering state tissue, what etching reagent was selected is 5% nital.Fig. 3 is the Photomicrograph of amplification 500 times under low-alloy wear-resistant steel as cast condition, and as can be seen from this figure, the configuration tissue of steel alloy is perlite and ferritic mixed structure, and in micrograph, dark color is perlite, and white chunks is ferrite.Fig. 4 is the microstructure that annealed state amplifies 500 times, and a large amount of granular carbide clearly, matrix has been separated out by the tissue topography of granular pearlite, and distribution of carbides is also very even.Fig. 5 is the tissue that tempering state amplifies 500 times, and what tempering obtained is tempered martensite, the not yet completely dissolve of martensitic lath and lamellar morphology.
Utilize MSE-S particulate tester for testing scouring wear to measure the wear rate of low-alloy wear-resistant steel under wet type erosion-corrosion environment, experiment condition is: WA#8000 particle, and paste consistency is 3wt%, and spray angle is 90 °, standard Attrition power, and wear area is 1mm
2, test temperature is 25 DEG C, and test humidity is 72%RH.Wear rate (μm/g)=wearing depth/particle weight, thus the wear rate obtaining wear resisting steel is 1.832 μm/g, wear rate is very little, illustrates that alloy abrasion resistant steel wear resistance under wet type environment is excellent.Wear rate experimental data is shown in the table 4 of Figure 12, and corresponding wear rate as shown in Figure 6.
The YTN-TB100 type friction wear testing machine that low-temperature physics institute of Ukraine produces is tested the friction and wear behavior of low-alloy wear-resistant steel of the present invention and contrast material ZGMn13 steel.Friction sample is the cylinder sample of Ф 9mm × 20mm, and test temperature is room temperature, and friction velocity is 0.8m/s, and wearing and tearing distance is 1000m, is GCr15 bearing steel to mill material, loads positive pressure and is respectively 20N, 30N and 40N.Fig. 7, Fig. 8 and Fig. 9 are friction velocity is 0.8m/s, when load is respectively 20N, 30N and 40N, the change of the friction coefficient wearing-in period of alloy abrasion resistant steel and ZGMn13 steel, Figure 10 rejects the bad point in the wearing and tearing frictional coefficient of first 5 minutes and wear process, the frictional coefficient under its different loads that obtains of averaging.Frictional coefficient is the ratio of frictional force and positive pressure, from Fig. 7,8 and 9, can find out that frictional coefficient is a undulating quantity, and particularly within the front 5min time, the frictional coefficient of visible alloy abrasion resistant steel is slightly larger than ZGMn13 steel simultaneously.As can be seen from Figure 10, the frictional coefficient of alloy abrasion resistant steel and ZGMn13 steel, all between 0.400 ~ 0.600, belongs in normal range; Alloy abrasion resistant steel frictional coefficient is between 0.500 ~ 0.600, and ZGMn13 steel frictional coefficient is relatively little, between 0.400 ~ 0.500.Illustrate in process of friction and wear, under equal positive pressure, the frictional force of alloy abrasion resistant steel slightly larger than ZGMn13 steel, but in tolerance interval, meets the requirement of work completely.Figure 11 is for finally recording frictional wear mass loss under different loads, as can be seen from the figure, under three different positive pressures, the frictional wear weightlessness of steel alloy and high mangaenese steel changes to some extent, but the mass loss during abrasion of low-alloy wear-resistant steel of the present invention is all the mass loss during abrasion being starkly lower than contrast ZGMn13 steel, under equal conditions is described, the wear resistance of low-alloy wear-resistant steel is better, longer service life.
Claims (3)
1. for a low-alloy wear-resistant steel for wet type wearing and tearing, it is characterized in that element wt ratio is: the Fe of C:0.28-0.32%, Cr:1.3-1.7%, Cu:0.3-0.5%, Mo:0.3-0.6%, Mn:1.0-1.5%, Ni:0.7-1.0%, Si:0.5-0.8%, Nb:0.04-0.08%, V:0.06-0.1%, surplus and inevitable impurity.
2. the low-alloy wear-resistant steel for wet type wearing and tearing according to claim 1, is characterized in that element wt ratio is: the Fe of C:0.30%, Cr:1.50%, Cu:0.45%, Mo:0.50%, Mn:1.20%, Ni:0.95%, Si:0.70%, Nb:0.04%, V:0.08%, surplus and inevitable impurity.
3. the thermal treatment process of the low-alloy wear-resistant steel for wet type wearing and tearing according to claim 1, it is characterized in that: adopt annealing process to heat-treat cast alloy steel, described annealing process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, be incubated at 700 DEG C, 250 DEG C are cooled to the furnace, air cooling of coming out of the stove after insulation; Quenching heat treatment again, quenching technology is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated, rear oil quenching at 900 DEG C; Finally carry out tempering heat treatment, tempering process is: less than 200 DEG C shove charges, heat-up rate≤80 DEG C/h, is incubated at 300 DEG C, after to come out of the stove air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381981.3A CN105018853B (en) | 2015-07-02 | 2015-07-02 | A kind of low-alloy wear-resistant steel for wet type abrasion and its Technology for Heating Processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381981.3A CN105018853B (en) | 2015-07-02 | 2015-07-02 | A kind of low-alloy wear-resistant steel for wet type abrasion and its Technology for Heating Processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105018853A true CN105018853A (en) | 2015-11-04 |
| CN105018853B CN105018853B (en) | 2017-03-01 |
Family
ID=54409147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510381981.3A Active CN105018853B (en) | 2015-07-02 | 2015-07-02 | A kind of low-alloy wear-resistant steel for wet type abrasion and its Technology for Heating Processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105018853B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222446A (en) * | 2016-08-25 | 2016-12-14 | 安徽丰源车业有限公司 | Alloy material supporting axle sleeve improving surface accuracy length in service life and preparation method thereof |
| CN109778068A (en) * | 2019-03-11 | 2019-05-21 | 上海大学 | The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297691A (en) * | 2006-05-08 | 2007-11-15 | Sanyo Special Steel Co Ltd | Steel for crushing edge, and method for producing crushing edge |
| CN102051455A (en) * | 2009-11-04 | 2011-05-11 | 宁波市鄞州商业精密铸造有限公司 | Heat-treatment process for low-temperature abrasion-resistant alloy cast steel |
| CN103215523A (en) * | 2013-02-21 | 2013-07-24 | 山东昊安金科新材料有限公司 | High-speed train alloy cast steel brake disc material and smelting process thereof |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
-
2015
- 2015-07-02 CN CN201510381981.3A patent/CN105018853B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297691A (en) * | 2006-05-08 | 2007-11-15 | Sanyo Special Steel Co Ltd | Steel for crushing edge, and method for producing crushing edge |
| CN102051455A (en) * | 2009-11-04 | 2011-05-11 | 宁波市鄞州商业精密铸造有限公司 | Heat-treatment process for low-temperature abrasion-resistant alloy cast steel |
| CN103215523A (en) * | 2013-02-21 | 2013-07-24 | 山东昊安金科新材料有限公司 | High-speed train alloy cast steel brake disc material and smelting process thereof |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222446A (en) * | 2016-08-25 | 2016-12-14 | 安徽丰源车业有限公司 | Alloy material supporting axle sleeve improving surface accuracy length in service life and preparation method thereof |
| CN109778068A (en) * | 2019-03-11 | 2019-05-21 | 上海大学 | The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying |
| CN109778068B (en) * | 2019-03-11 | 2020-07-17 | 上海大学 | Niobium-vanadium composite reinforced wear-resistant cast steel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105018853B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102134682B (en) | Wear resistant steel plate | |
| CN101775539B (en) | High-flexibility wear-resistant steel plate and manufacturing method thereof | |
| CN103194684B (en) | A kind of wear-resisting steel plate and manufacture method thereof | |
| CN100357477C (en) | Super bainite abrasion-resistant steel and its manuafcturing process | |
| JP2017095802A (en) | Hot work tool steel having excellent toughness and thermal conductivity | |
| CN104694829A (en) | High-toughness wear-resisting medium manganese steel hot rolled plate and manufacturing method thereof | |
| Cardoso et al. | Abrasive wear in Austempered Ductile Irons: A comparison with white cast irons | |
| CN102021492B (en) | Low-carbon low-alloy abrasion-resistant steel and production method thereof | |
| CN105369130B (en) | Multielement alloying high-strength high-abrasion-resistance steel and manufacturing method of hot-rolled plate | |
| CN103205627A (en) | Low-alloy high-performance wear-resistant steel plate and manufacturing method thereof | |
| CN102041458A (en) | Low-alloy abrasion-resistant steel and manufacturing method thereof | |
| CN105018859A (en) | Wear-resisting bainite cast steel and preparation method thereof | |
| CN102676909A (en) | Method for manufacturing high-chrome cast iron grinding balls | |
| CN101880833A (en) | Stainless bearing steel adopting microalloying of rare earth and applicable to manufacturing miniature and small-size bearings and manufacturing method thereof | |
| CN102337455A (en) | High-toughness wear-resistant steel plate formed by rare earth through treatment | |
| CN105239014A (en) | Low-cost high-carbon medium-magnesium abrasion resisting steel and manufacturing method of hot rolled plate of low-cost high-carbon medium-magnesium abrasion resisting steel | |
| CN104328334A (en) | High wear resistance high chromium cast iron used for bimetallic composite tube and preparation method thereof | |
| CN1103830C (en) | Solid self-lubricating wear-resisting alloy cast material | |
| CN103114252A (en) | Low-alloy wear-resistant steel for lining plate and preparation method thereof | |
| CN102304672B (en) | Preparation method of low and medium alloy wear resistant steel | |
| CN107723601A (en) | A kind of residual stress is 50 100MPa wear-resisting steel plate and preparation method thereof | |
| CN105002430A (en) | HB360 level complex-phase structure wear-resisting steel plate and production method thereof | |
| CN108193134A (en) | A kind of coal breaker tup novel low-alloy steel and its heat treatment method | |
| CN107675090A (en) | A kind of Brinell hardness 650HBW ranks high-wearing feature steel plate and preparation method thereof | |
| CN108070780A (en) | A kind of pearlite chrome-moly steel and its heat treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |