CN102703827A - Heat treatment process of wear resistant steel - Google Patents
Heat treatment process of wear resistant steel Download PDFInfo
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- CN102703827A CN102703827A CN2012100203469A CN201210020346A CN102703827A CN 102703827 A CN102703827 A CN 102703827A CN 2012100203469 A CN2012100203469 A CN 2012100203469A CN 201210020346 A CN201210020346 A CN 201210020346A CN 102703827 A CN102703827 A CN 102703827A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title abstract description 15
- 238000010438 heat treatment Methods 0.000 title abstract 3
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000010791 quenching Methods 0.000 claims abstract description 14
- 238000005496 tempering Methods 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000007669 thermal treatment Methods 0.000 claims description 20
- 239000004615 ingredient Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 239000011651 chromium Substances 0.000 description 17
- 229910052796 boron Inorganic materials 0.000 description 12
- 238000005266 casting Methods 0.000 description 12
- 239000011572 manganese Substances 0.000 description 11
- 229910052804 chromium Inorganic materials 0.000 description 10
- 239000010936 titanium Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910052750 molybdenum Inorganic materials 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 229910001208 Crucible steel Inorganic materials 0.000 description 6
- 229910000734 martensite Inorganic materials 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 229910001037 White iron Inorganic materials 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910010340 TiFe Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a heat treatment process of wear resistant steel. The wear resistant steel comprises chemical components, by weight percent, including 0.60-0.80% of C, 7.0-9.0% of Mn, 1.10-1.30% of Si, 2.40-2.80% of Cr, 0.10-0.20% of V, 0.05-0.10% of B, 0.02-0.03% of Ti, 0.02-0.05% of N, 0.6-0.8% of Ce, the balance of Fe and unavoidable impurities. The heat treatment process includes: firstly, annealing the wear resistant steel at 780 DEG C to 820 DEG C in an annealing furnace, holding temperature for 3-5 hours before taking out the steel, and air-cooling the steel; secondly, quenching the wear resistant steel at 1060 DEG C to 820 DEG C in a quenching furnace, holding the temperature for 2-4 hours before taking the steel, performing oil hardening, and cooling the wear resistant steel to below 200 DEG; and thirdly, tempering the wear resistant steel at 530-560 DEG C in a tempering furnace, and holding the temperature for 6-8 hours before taking out the steel for air-cooling.
Description
Technical field
The present invention relates to the ferrous materials processing technique field, particularly a kind of thermal treatment process of wear resisting steel.
Background technology
Wearing and tearing are topmost modes in three kinds of failure modes of engineering component (wearing and tearing, burn into fracture), whole world every year because of wearing and tearing cause with a toll of hundreds billion of dollars, have great economic implications so research is worn and torn and continually developed the better high-abrasive material of performance.At present, high-abrasive material is concluded 3 types: (1) Hadfield Steel, virgin state are austenite; Under extraneous intense impact and high pressure stress, austenite takes place to be strengthened to martensitic transformation, the top layer has very high hardness; Inside has good toughness, and good wear resistance and safety are arranged.(2) low-alloy wear-resistant steel through rational chemical proportioning and thermal treatment, can obtain preferable over-all properties, and alloying element is used Cr, Mo, Ni, Nb, Mn and Si etc. always, adopt usually martensitic transformation, second mutually means such as reinforcement improve wear resistance.(3) rich chromium cast iron belongs to hard brittle material, contains Cr amount high (usually greater than 15%), depends on M
7C
3The type carbide improves wear resistance.In the above-mentioned materials, at present will high mangaenese steel as main high-abrasive material, but under middle or small impact load, owing to be main, so high mangaenese steel is difficult to elicit latent faculties with cutting abrasion.And in the low alloy steel since do not have wear-resisting hard mutually or the hard phase amount very little, wear resistance is not high yet.Although high-chromium white cast iron hardness is high, wear resistance is good, there be safety in utilization difference and the high deficiency of production cost under the big and impact load of fragility.
In order to improve the wear resistance of cast material, Chinese invention patent CN1560311 discloses a kind of wearable cast steel and preparation method thereof.Wearable cast steel contains C 0.2～0.35%, Si 0.6～1.0%, Mn 0.8～1.2%, Ni 0.2～0.6%, Cr 0.6～1.2%, Mo 0.15～0.35%.Its method for making comprises smelting, casting and thermal treatment.Smelt: dissolve at molten steel and put into chromium, nickel, molybdenum at 1/5～2/5 o'clock, come out of the stove and dropped into manganese, silicon in preceding 5～15 minutes, drop into reductor then; Thermal treatment: 910～930 ℃ of casting foundry goods normalizings, be incubated 2 hours air coolings of coming out of the stove, 860～900 ℃ of insulations of the quenching shrend of coming out of the stove after 1.5 hours, water temperature is below 30 ℃, and 210～230 ℃ of tempering are incubated 2～2.5 hours, the air cooling of coming out of the stove.Owing to no wear-resisting hard phase, hardness is low in this invention wearable cast steel, and wear resistance is relatively poor.Chinese invention patent CN1600889 also discloses a kind of wearable cast steel in microalloy martensite and method of manufacture; Its chemical ingredients is wt%:C 0.25～0.34, Si 0.3～0.7, Mn 1.15～1.65, Cr 0.5～1.0, B 0.0005～0.005, Ti 0.01～0.06, Ce 0.01～0.045, La 0.01～0.035, Al 0.01～0.1, S≤0.035, P≤0.035; Its microalloying treatment process is earlier in smelting furnace, to add TiFe in 1600～1610 ℃, in casting ladle, adds or is inclining to molten steel and in casting ladle, drop into RESiFe and BFe alloy simultaneously.The advantage of this invention is not use valuable alloying elements such as Mo, Ni, but reaches highly malleablized and hard malleableize purpose through microalloying, thereby manufacturing cost is lower.But also exist hardness low, the deficiency that wears no resistance.
Chinese invention patent CN1385549 then discloses a kind of middle carbon multi-member low alloy grinding-tolerant steel material Chemical Composition and content, and wherein: C 0.38～0.45%, and Si 0.90～1.30%; Mn 1.2～2.0%, and Cr 1.0～1.7%, and Mo 0.3～0.5%; V 0.1～0.2%, and B 0.001～0.003%, and Re 0.01～0.03%; S≤0.04%, P≤0.045%, all the other are Fe.Final metallographic structure is: tempered martensite+bainite+carbide+small portion of residual austenite.This steel not only has higher hardness, and has toughness preferably, and thermal treatment process simply is easy to grasp, and manufacturing cost is lower, can be widely used in wearing pieces such as ball grinding machine lining board, crusher tooth plate, backplate, tup.The raising of carbon content causes hardness to increase, and wear resistance makes moderate progress, but owing to contain expensive molybdenum element, causes production cost to increase.Russ P RU2288294-C2 also discloses a kind of casting wear-resistant steel, and its chemical constitution is 0.80～0.95%C, 0.20～0.40%Si, 8.50～10.0%Mn, 0.50～0.85%Ni, 0.10～0.30%W, 0.025～0.045%N, 0.05～0.10%V and 0.10～0.30%Mo.Owing to add elements such as expensive nickel, molybdenum, cause production cost to increase.
In order to improve the cast steel wear resisting property, Chinese invention patent CN100999803 discloses a kind of high boron wear-resisting casting steel, and the chemical ingredients and the weight percent thereof of this high boron wear-resisting casting steel that it is characterized in that making are: C:0.10%～0.50%; B:0.8%～5.0%; Cu:0.3%～0.6%; Mn:0.8%～2.0%; Cr:1.0%～2.5%; Si＜1.5%; Ti:0.08%～0.20%; Ce:0.04%～0.12%; Mg:0.02%～0.18%; N:0.06%～0.18%; S＜0.05%; P＜0.05%; Surplus is Fe and inevitable trace impurity.With ferrotianium, cerium base magnesium-rare earth and nitrogenous substances molten steel is carried out composite inoculating and handle, cooling is fast carried out low-temperaturetempering subsequently and is eliminated stress after high temperature austeniteization.Contain more high firmness boride in this cast steel, wear resistance is better, but matrix is a martensite, and fragility is bigger.Chinese invention patent CN1804091 then discloses a kind of toughening method of casting high-boron wear-resistant alloy, it is characterized in that the chemical ingredients of casting high-boron wear-resistant alloy is: 0.3～0.35wt%C, 1～1.5wt%B; 0.6～0.8wt%Si; 0.8～1.0wt%Mn, S＜0.04wt%, P＜0.04wt%; All the other are Fe, Ti and unavoidable impurities element, and wherein Ti is brought into by the alterant ferrotianium; Concrete preparation process is: carry out the molten steel melting earlier, after the molten steel melting is accomplished and inserted the aluminium final deoxygenation, add the processing of going bad of alterant ferro-titanium; Treating poured into a mould after skimming clearly; Carry out malleableize thermal treatment behind the casting complete, the malleableize thermal treatment temp is 1020～1050 ℃, and soaking time is 2～3 hours; Quench or normalizing last tempering then; Alterant ferro-titanium consumption satisfies: wherein the consumption of titanium is 0.75～1.0wt% of casting high-boron wear-resistant alloy; Molten steel adds boron and adopts ferro-boron, adds after ferro-boron adds when the molten steel melting or the agent ferrotianium adds on the turn again.The eutectic boride of the sand mold casting high-boron wear-resistant alloy after the process patent is isolated shape and is distributed in the matrix.The absorption merit A of 10mm * 10mm * 55mm standard impact specimen
kReach 12.5J, impelling strength strengthens.Because matrix is still martensite, fragility is still bigger.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide a kind of thermal treatment process of wear resisting steel, and this wear resisting steel hardness is high, wear resistance, plasticity and good toughness, and cost is low.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of thermal treatment process of wear resisting steel is characterized in that, the chemical ingredients of said wear resisting steel is made up of following component in per-cent (weight): C:0.60-0.80; Mn:7.0-9.0; Si:1.10-1.30; Cr:2.40-2.80; V:0.10-0.20; B:0.05-0.10; Ti:0.02-0.03, N:0.02-0.05, Ce:0.6-0.8, surplus is Fe and unavoidable impurities, said thermal treatment process comprises:
1. annealing: it is about 780 ℃ of-820 ℃ of lehres that said wear resisting steel is placed temperature, is incubated 3-5 hour and comes out of the stove, then air cooling;
2. quench: it is about 1060 ℃-1080 ℃ quenching furnance that said wear resisting steel is placed temperature, and insulation was taken out oil quenchinng after 2-4 hour, and wear resisting steel is cooled to below 200 ℃;
3. tempering: it is about 530-560 ℃ tempering stove that said wear resisting steel is placed temperature, is incubated 6-8 hour and takes out air cooling.
Beneficial effect of the present invention is:
(1) valuable alloying element such as not nickeliferous, the molybdenum of wear resisting steel of the present invention, cobalt; But adopt elements such as cheap silicon, manganese, chromium, the starting material source is abundant, low production cost; Through adding B, V and three kinds of elements of N; Can form the iron boron cpd of high firmness, the vanadium nitrogen compound can obviously improve steel hardness and improve the steel wear resistance.
(2) wear resisting steel of the present invention can reach following mechanical property after above-mentioned thermal treatment: hardness is greater than 53HRC, tensile strength sigma
b>=1000Mpa, impelling strength α
k>=20J/cm
2, fracture toughness property K
IC>=40MPa.m
1/2
(3) wear resisting steel of the present invention is applied to the wearing and tearing field; Wear resistance improves 2～3 times than high mangaenese steel; Improve more than 1 times than low alloy steel, suitable with high-chromium white cast iron, and it is big to have overcome high-chromium white cast iron fragility; Be prone to deficiency broken and fracture in the use, and production cost reduces more than 35% than high-chromium white cast iron.
Embodiment
Embodiment one
A kind of thermal treatment process of wear resisting steel, the chemical ingredients of said wear resisting steel is made up of following component in per-cent (weight): C:0.60; Mn:9.0; Si:1.10; Cr:2.80; V:0.10; B:0.10; Ti:0.02, N:0.05, Ce:0.6, surplus is Fe and unavoidable impurities, said thermal treatment process comprises:
1. annealing: it is 780 ℃ of lehres that said wear resisting steel is placed temperature, is incubated 5 hours and comes out of the stove, then air cooling;
2. quench: it is 1060 ℃ quenching furnance that said wear resisting steel is placed temperature, and insulation was taken out oil quenchinng after 4 hours, and wear resisting steel is cooled to below 200 ℃;
3. tempering: it is 530 ℃ tempering stove that said wear resisting steel is placed temperature, is incubated 8 hours and takes out air cooling.
Embodiment two
A kind of thermal treatment process of wear resisting steel, the chemical ingredients of said wear resisting steel is made up of following component in per-cent (weight): C:0.80; Mn:7.0; Si:1.30; Cr:2.40; V:0.20; B:0.05; Ti:0.03, N:0.02, Ce:0.8, surplus is Fe and unavoidable impurities, said thermal treatment process comprises:
1. annealing: it is 820 ℃ of lehres that said wear resisting steel is placed temperature, is incubated 3 hours and comes out of the stove, then air cooling;
2. quench: it is 1080 ℃ quenching furnance that said wear resisting steel is placed temperature, and insulation was taken out oil quenchinng after 2 hours, and wear resisting steel is cooled to below 200 ℃;
3. tempering: it is 560 ℃ tempering stove that said wear resisting steel is placed temperature, is incubated 6 hours and takes out air cooling.
Embodiment three
A kind of thermal treatment process of wear resisting steel, the chemical ingredients of said wear resisting steel is made up of following component in per-cent (weight): C:0.70; Mn:8.0; Si:1.20; Cr:2.60; V:0.15; B:0.08; Ti:0.025, N:0.035, Ce:0.7, surplus is Fe and unavoidable impurities, said thermal treatment process comprises:
1. annealing: it is 800 ℃ of lehres that said wear resisting steel is placed temperature, is incubated 4 hours and comes out of the stove, then air cooling;
2. quench: it is 1070 ℃ quenching furnance that said wear resisting steel is placed temperature, and insulation was taken out oil quenchinng after 3 hours, and wear resisting steel is cooled to below 200 ℃;
3. tempering: it is 540 ℃ tempering stove that said wear resisting steel is placed temperature, is incubated 7 hours and takes out air cooling.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. the thermal treatment process of a wear resisting steel is characterized in that, the chemical ingredients of said wear resisting steel is made up of following component in per-cent (weight): C:0.60-0.80; Mn:7.0-9.0; Si:1.10-1.30; Cr:2.40-2.80; V:0.10-0.20; B:0.05-0.10; Ti:0.02-0.03, N:0.02-0.05, Ce:0.6-0.8, surplus is Fe and unavoidable impurities, said thermal treatment process comprises:
1. annealing: it is about 780 ℃ of-820 ℃ of lehres that said wear resisting steel is placed temperature, is incubated 3-5 hour and comes out of the stove, then air cooling;
2. quench: it is about 1060 ℃-1080 ℃ quenching furnance that said wear resisting steel is placed temperature, and insulation was taken out oil quenchinng after 2-4 hour, and wear resisting steel is cooled to below 200 ℃;
3. tempering: it is about 530-560 ℃ tempering stove that said wear resisting steel is placed temperature, is incubated 6-8 hour and takes out air cooling.
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| CN104451405A (en) * | 2013-09-13 | 2015-03-25 | 宝钢特钢有限公司 | Austenite wear-resistant steel with impact and wear resistance and hot rolled plate manufacturing method |
| CN104630642A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Heat-resistant and wear-resistant cast steel |
| CN106834936A (en) * | 2016-12-29 | 2017-06-13 | 兰州兰石集团有限公司 | Agricultural machinery deep soil loosing shovel abrasion resistant cast steel and its Technology for Heating Processing |
| CN108588549A (en) * | 2017-12-28 | 2018-09-28 | 天津威尔朗科技有限公司 | A kind of drag conveyor high abrasion ledge and its manufacturing method |
| CN113913600A (en) * | 2021-04-12 | 2022-01-11 | 河南北方红阳机电有限公司 | Heat treatment process method for D50Re material penetration type shell |
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| CN103498032A (en) * | 2013-09-23 | 2014-01-08 | 无锡阳工机械制造有限公司 | Quenching process of medium carbon alloy steel |
| CN104004964A (en) * | 2014-06-13 | 2014-08-27 | 哈尔滨工业大学 | High-toughness and high-abrasion-resistance reamer tooth and heat treatment method thereof |
| CN104004964B (en) * | 2014-06-13 | 2015-12-02 | 哈尔滨工业大学 | High tough high abrasion reamer tooth and heat treating method thereof |
| CN104630642A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Heat-resistant and wear-resistant cast steel |
| CN106834936A (en) * | 2016-12-29 | 2017-06-13 | 兰州兰石集团有限公司 | Agricultural machinery deep soil loosing shovel abrasion resistant cast steel and its Technology for Heating Processing |
| CN108588549A (en) * | 2017-12-28 | 2018-09-28 | 天津威尔朗科技有限公司 | A kind of drag conveyor high abrasion ledge and its manufacturing method |
| CN113913600A (en) * | 2021-04-12 | 2022-01-11 | 河南北方红阳机电有限公司 | Heat treatment process method for D50Re material penetration type shell |
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