CN102953008A - Alloy forged steel and its heat treatment method and use - Google Patents
Alloy forged steel and its heat treatment method and use Download PDFInfo
- Publication number
- CN102953008A CN102953008A CN2011102452264A CN201110245226A CN102953008A CN 102953008 A CN102953008 A CN 102953008A CN 2011102452264 A CN2011102452264 A CN 2011102452264A CN 201110245226 A CN201110245226 A CN 201110245226A CN 102953008 A CN102953008 A CN 102953008A
- Authority
- CN
- China
- Prior art keywords
- forged steel
- alloy forged
- steel according
- alloy
- equal
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 158
- 239000010959 steel Substances 0.000 title claims abstract description 158
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 138
- 239000000956 alloy Substances 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000010438 heat treatment Methods 0.000 title abstract description 17
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 31
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 27
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 27
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 60
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 27
- 239000011651 chromium Substances 0.000 claims description 27
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 26
- 239000011733 molybdenum Substances 0.000 claims description 26
- 238000010791 quenching Methods 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 238000010792 warming Methods 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- 229910052720 vanadium Inorganic materials 0.000 claims description 18
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 18
- 239000011572 manganese Substances 0.000 claims description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 14
- 239000003607 modifier Substances 0.000 claims description 14
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 14
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 14
- 229910052721 tungsten Inorganic materials 0.000 claims description 14
- 239000010937 tungsten Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 229910052758 niobium Inorganic materials 0.000 claims description 11
- 239000010955 niobium Substances 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 39
- 230000008569 process Effects 0.000 abstract description 29
- 239000000126 substance Substances 0.000 abstract description 19
- 238000005242 forging Methods 0.000 description 29
- 239000000203 mixture Substances 0.000 description 22
- 230000000171 quenching effect Effects 0.000 description 15
- 230000000979 retarding effect Effects 0.000 description 15
- 238000005275 alloying Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000007669 thermal treatment Methods 0.000 description 10
- 208000037656 Respiratory Sounds Diseases 0.000 description 8
- 239000000470 constituent Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 238000003723 Smelting Methods 0.000 description 6
- 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 6
- 238000005496 tempering Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000005261 decarburization Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 241000271559 Dromaiidae Species 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Landscapes
- Forging (AREA)
Abstract
The invention provides an alloy forged steel and its heat treatment method and use. The alloy forged steel comprises: by mass, 0.26 to 0.35% of C, 0.15 to 0.39% of Si, 0.85 to 1.50% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 0.80 to 2.00% of Cr, 0.70 to 2.00% of Ni, 0.35 to 1.00% of Mo, and the balance Fe and other elements. Through reasonable proportioning of alloy elements such as Mn, Ni, Cr and Mo, and main chemical components such as C and Si in forged steel materials, through appropriate heat treatment processes, grains are refined; hardenability and heat intensity properties of the alloy forged steel are improved; normal temperature strength and high temperature strength of the alloy forged steel are greatly improved; and excellent comprehensive mechanical properties of the alloy forged steel are obtained.
Description
Technical field
The present invention relates to a kind of alloy forged steel and heat treating method thereof, also relate to a kind of brake disc of high-speed train of being made by this alloy forged steel.
Background technology
Retarding disc is the vitals of Braking System for Multiple Units, especially 250Km/h and EMUs more at a high speed, and the capability and performance of retarding disc directly affects the property indices of EMUs.And what have the greatest impact for the retarding disc capability and performance is every mechanical performance index of the employed alloy forged steel of retarding disc material.Domestic existing bullet train Forging Steel Brake Disc mainly contains with the weak point of alloy forged steel material:
(1) each mating chemical composition of existing alloy forged steel is unreasonable, and composition is not easy control in smelting process, and comprehensive mechanical property is not very desirable.For example, publication number be CN1385628A, name be called " a kind of material for brake disc of high-speed train " (immediate prior art) patent application in order to satisfy the requirement of Materials for High-speed Train Brake Discs performance, added the alloying constituents such as chromium, molybdenum, vanadium, but the alloying constituents such as chromium, molybdenum have been brought material plasticity and toughness when increasing the strength of materials obvious reduction; Similarly, although vanadium can crystal grain thinning, improve intensity, the easy oxidation of vanadium cause its composition in smelting process to be not easy control, and addition is too much, often easily disperses inhomogeneously, also easily causes material production fragility; In addition, the interpolation of vanadium also can bring the decline of material at low temperature impelling strength, affects the thermal adaptation performance of material, causes train to descend at the braking ability of some cold districts or low temperature season.
(2) existing alloy forged steel adopts and quenches that to add the heat treating method that tempering processes unreasonable, fails fully to optimize further, promote the performance of material; Cause prepared retarding disc easily to produce distortion and crackle, affect the work-ing life of retarding disc.
(3) the domestic existing bullet train Forging Steel Brake Disc main dependence on import of alloy forged steel, and expensive.
Therefore, for satisfying the needs of China Express Railway development, develop a kind of comprehensive mechanical property good, easy to manufacture, and the high brake disc of high-speed train of cost performance seems particularly urgent with material.
Summary of the invention
The first purpose of the present invention is: the problem for above-mentioned prior art exists, a kind of alloy forged steel is provided, and this alloy forged steel is easy to manufacture, comprehensive mechanical property is good, is particularly useful for making bullet train or EMUs retarding disc.
The first purpose of the present invention is achieved through the following technical solutions: a kind of alloy forged steel, and its each component and mass percent thereof are as follows: carbon 0.26%～0.35%; Silicon 0.15%～0.39%; Manganese 0.85%～1.50%; Phosphorus is less than or equal to 0.02%; Sulphur is less than or equal to 0.01%; Chromium 0.80%～2.00%; Nickel 0.70%～2.00%; Molybdenum 0.35%～1.00%; Surplus is iron and other elements, and the mass percent summation of described other elements is less than or equal to 0.30%.
In technique scheme, preferred, described manganese is 0.85%～1.19%; Further preferred, described manganese is 0.85%～1.10%.
In technique scheme, preferred, described chromium is 0.91%～2.00%; Further preferred, described chromium is 0.91%～1.95%; Further preferred again, described chromium is 0.91%～1.85%.
In technique scheme, preferred, described nickel is 0.71%～2.00%; Preferred again, described nickel is 0.71%～1.64%; Further preferred, described nickel is 0.71%～1.61%; Further preferred, described nickel is 0.72%～1.61%.
In technique scheme, preferred, described molybdenum is 0.35%～0.70%; Further preferred, described molybdenum is 0.38%～0.63%; Further preferred again, described molybdenum is 0.38%～0.49%.
In technique scheme, preferred, described silicon is 0.20%～0.39%; Further preferred, described silicon is 0.22%～0.34%.
In technique scheme, preferred, the content of described phosphorus is less than or equal to 0.019%; Preferably, the content of described sulphur is less than or equal to 0.009%.
In technique scheme, preferred, described other elements comprise oxygen, hydrogen, nitrogen, and wherein the oxygen mass percentage content is less than or equal to 0.0020%; The hydrogen mass percentage content is less than or equal to 0.0005%; The nitrogen mass percentage content is less than or equal to 0.0070%.
In described other elements, except some the common harmful alloying elements that should control, such as tin, antimony, arsenic, copper etc.; Can also comprise that some are in the elements such as the useful alloying element of the performance of steel such as vanadium, titanium, tungsten, niobium one or more.
In technique scheme, preferred, described other elements comprise in vanadium, titanium, tungsten, the niobium element any one or any two and more than; Its content is vanadium≤0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
In technique scheme, further preferred, described other elements comprise in vanadium, titanium, tungsten, the niobium element any one or any two and more than; Its content is vanadium＜0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
In technique scheme, the metallographic structure after the modifier treatment of described alloy forged steel is the sorbite tissue.
Alloy forged steel of the present invention can adopt LF+VOD+VD of the prior art (ladle oven process+vacuum-oxygen decarbonizing oven process+vacuum decarburization oven process) process for smelting steel or similar process for making to be prepared.
The below describes contained each chemical composition role and the preferred content range thereof in forged steel is smelted of alloy forged steel of the present invention in detail.
In steelmaking process, manganese is good reductor and sweetening agent.Even if add 0.70% when above " manganese steel " in carbon steel, the steel of more general manganese amount not only has enough toughness, and higher intensity and hardness are arranged, and the hardening capacity of raising steel is improved the hot workability of steel.In the present invention, its content preferably is controlled at 0.85%～1.19%; Further preferred manganese is 0.85%～1.10%.
Chromium can improve intensity, hardness and the wear resistance of steel.Simultaneously, chromium can improve again the hot strength of steel, is the important alloying element of high temperature steel.In the present invention, it is 0.91%～2.00% that its content preferably is controlled at chromium, and further preferred chromium is 0.91%～1.95%, and further preferred chromium is 0.91%～1.85%.
Nickel is the element that enlarges the austenite phase region, and also is the solution strengthening element, and along with the increase of nickel content, the normal temperature strength of steel and hot strength increase, and little to plasticity and Toughness, specifically can see Fig. 1, Fig. 2.In the present invention, its content preferably being controlled at described nickel is 0.71%～2.00%; Further preferred described nickel is 0.71%～1.64%, and further preferred nickel is 0.71%～1.61% again; Further preferred nickel is 0.72%～1.61%.
Molybdenum can make the grain refining of steel, improves hardening capacity and thermostrength, keeps enough intensity and creep resisting abilities (at high temperature be subject to for a long time stress, deform, claim creep) when high temperature.Add molybdenum in the steel, can improve mechanical property; And can suppress the fragility that steel alloy causes owing to tempering.In the present invention, its content preferably being controlled at molybdenum is 0.35%～0.70%; Further preferred molybdenum is 0.38%～0.63%; Molybdenum 0.38%～0.49% more preferably again.
In the present invention, silicon is controlled at 0.15%～0.39%, preferred silicon is 0.20%～0.39%, and further preferred silicon is 0.22%～0.34%.
In the present invention, phosphorus is controlled at less than or equal to 0.02%; Sulphur is less than or equal to 0.01%; Preferred phosphorus content is less than or equal to 0.019%; Preferred sulphur content is less than or equal to 0.009%.
In the present invention, preferred oxygen level is less than or equal to 0.0020%; Preferred hydrogen richness is less than or equal to 0.0005%; Preferred nitrogen content is less than or equal to 0.0070%.
The second purpose of the present invention is to provide a kind of application of aforementioned alloy forged steel, and described alloy forged steel is applied to make brake disc of high-speed train.
The second purpose of the present invention is by providing following a kind of brake disc of high-speed train to realize: it uses the manufacturing of aforesaid alloy forged steel to form.
The 3rd purpose of the present invention is to provide a kind of heat treating method that can further improve the aforementioned alloy forged steel of mechanical property, minimizing distortion and crackle tendency.
The 3rd purpose of the present invention is to realize by the heat treating method that aforementioned alloy forged steel is provided, and it may further comprise the steps:
At first carry out normalizing treatment, be incubated 3～5 hours after being warming up to 860 ℃～920 ℃, air-cooled to normal temperature;
Then carry out modifier treatment: first quench treatment is incubated 3～5 hours, shrend after being warming up to 860 ℃～920 ℃; Carry out subsequently temper, be incubated 3～5 hours after being warming up to 550～620 ℃, air-cooled or water-cooled is to normal temperature.
Preferably, in the heat treating method of alloy forged steel, the temperature-rise period when carrying out described normalizing treatment and quench treatment is, is incubated 1～2 hour after at first being warming up to 650 ℃～700 ℃, and then is warming up to 860 ℃～920 ℃.
Preferably, in the heat treating method of alloy forged steel, when carrying out described normalizing treatment and quench treatment, heat-up rate is 120 ℃～200 ℃/hour.
Beneficial effect of the present invention is mainly reflected in:
(1) by choose reasonable and collocation to manganese, nickel, chromium, a plurality of alloying constituents of molybdenum, when guaranteeing the forged steel strength increase, plasticity and the toughness that can also guarantee material are not subjected to considerable influence, have avoided the phenomenon that causes material plasticity and toughness obviously to descend because of strength increase.Prepared alloy forged steel material comprehensive mechanical property is good; Obviously overcome the contradiction (seeing the simultaneous test of back for details) that disc material of the prior art causes in intensity owing to each mating chemical composition is unreasonable and moulds, can not take into account aspect the toughness.
(2) by to manganese, nickel, chromium, a plurality of alloying constituents of molybdenum and with the rational proportion of the main chemical compositions such as carbon, silicon, improved hardening capacity and the thermostrength of alloy forged steel material, and normal temperature strength and hot strength have obtained also increasing substantially.
(3) by to manganese, nickel, chromium, a plurality of alloying constituents of molybdenum and with the rational proportion of other main chemical compositions such as carbon, silicon, the wear resistance of alloy forged steel material of the present invention is better than prior art.The Brinell hardness number of the alloy forged steel material that the employing technical solution of the present invention obtains reaches the simultaneous test that 300～388HBW(sees the back for details).
(5) alloy forged steel material of the present invention is after suitable thermal treatment, grain refining, further improved tensile strength, yield strength and the toughness of alloy forged steel material, hot strength and plasticity have also obtained obvious improvement, distortion and crackle tendency little (seeing the simultaneous test of back for details).
(6) mechanical performance index that after heat treatment reaches of alloy forged steel of the present invention is as follows: tensile strength 〉=1070MPa; Yield strength 〉=905MPa; Unit elongation 〉=14%; Relative reduction in area 〉=35%; Brinell hardness number is 300～388HBW.Can satisfy the material requirements of 250Km/h and above brake disc of high-speed train fully.
In addition, alloy forged steel of the present invention adopts conventional LF+VOD+VD (ladle oven process+vacuum-oxygen decarbonizing oven process+vacuum decarburization oven process) process for smelting steel or similar process for making to be prepared, it is convenient to smelt, forge easily, manufacturing cost reduces, and more is conducive to industrialized enforcement and popularization.
EMU retarding disc with alloy forged steel material of the present invention manufacturing has carried out run-in test at EMU.Operation result shows, with EMU retarding disc steady quality, excellent performance, the long service life of alloy forged steel material manufacturing of the present invention; Simultaneously, compare with same kind of products at abroad, also have higher superiority of effectiveness.
Show in sum, because the present invention is by choose reasonable and the proportioning of other main chemical compositions such as carbon, silicon in the alloying constituent such as manganese, chromium, nickel, molybdenum and the forged steel material, after suitable thermal treatment, make grain refining, improved hardening capacity and the thermostrength of alloy forged steel material, normal temperature strength and hot strength increase substantially, and prepared alloy forged steel not only has higher tensile strength and yield strength, moulding, also having aspect the toughness preferably performance, comprehensive mechanical property is good.Simultaneously, alloy forged steel material of the present invention has advantages of also that wear resisting property is good, distortion and crackle tendency are little, it is convenient to smelt, forge easily and manufacturing cost low, the work-ing life and the industrial application that are conducive to prolong brake disc of high-speed train.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the normal temperature strength of nickel content and alloy forged steel and the graph of a relation of hot strength.
Fig. 2 is the elongation of nickel content and alloy forged steel and the graph of a relation of relative reduction in area.
Fig. 3 is the graph of a relation of quenching temperature and the alloy forged steel tensile strength of specific embodiments of the invention.
Fig. 4 is the quenching temperature of specific embodiments of the invention and the graph of a relation of alloy forged steel elongation.
Fig. 5 is the graph of a relation of the quenching temperature of specific embodiments of the invention and alloy forged steel tensile strength, yield strength.
Fig. 6 is the quenching temperature of specific embodiments of the invention and the elongation of alloy forged steel, the graph of a relation of relative reduction in area.
Fig. 7 is the picture of the alloy forged steel metallographic structure after heat treatment of specific embodiments of the invention when amplifying 100 times.
Fig. 8 is the picture of the alloy forged steel metallographic structure after heat treatment of specific embodiments of the invention when amplifying 500 times.
Embodiment
Address other technologies content, characteristics and effect about before the present invention, in the detailed description of following embodiment, can clearly present.Yet those skilled in the art will recognize that herein reference the specific descriptions of accompanying drawing only be used for the example purpose, the present invention is not limited thereto.
The chemical composition (%) of table 1 alloy forged steel of the present invention
| C | Si | Mn | P | S | Ni | Cr | Mo |
| 0.26% ～ 0.35% | 0.15% ～ 0.39% | 0.85% ～ 1.50% | ≤0.020% | ≤0.010% | 0.70% ～ 2.00% | 0.80% ～ 2.00% | 0.35% ～ 1.00% |
As shown in table 1, each component and the mass percent scope thereof of alloy forged steel of the present invention are as follows: carbon 0.26%～0.35%; Silicon 0.15%～0.39%; Manganese 0.85%～1.50%; Phosphorus is less than or equal to 0.02%; Sulphur is less than or equal to 0.01%; Chromium 0.80%～2.00%; Nickel 0.70%～2.00%; Molybdenum 0.35%～1.00%; Surplus is iron and other elements.
Described other constituent contents are less than or equal to 0.30%.Described other elements comprise oxygen, hydrogen, nitrogen, and wherein the oxygen mass percentage content is less than or equal to 0.0020%; The hydrogen mass percentage content is less than or equal to 0.0005%; The nitrogen mass percentage content is less than or equal to 0.0070%.
Described other elements also comprise in the elements such as vanadium, titanium, tungsten, niobium any one or any two and more than.Its content is preferably vanadium≤0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%; More preferably, vanadium＜0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
Other elements among the application comprise two classes, and other elements of a class are harmful to the performance of steel generally, such as tin, antimony, arsenic, copper, hydrogen etc.; Another kind of other elements are useful to the performance of steel, and such as vanadium, titanium, tungsten, niobium etc., its content is generally vanadium≤0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
In described other elements, except some the common harmful alloying elements that should control, such as tin, antimony, arsenic, copper etc.; Can also comprise that some are to a kind of or two kinds and above combination in the elements such as the useful alloying element of the performance of steel such as vanadium, titanium, tungsten, niobium.
In alloy forged steel composition of the present invention, in order further to improve the performance of steel, should strictly control the content of oxygen, hydrogen, nitrogen, preferred oxygen level is less than or equal to 0.0015%; Preferred hydrogen richness is less than or equal to 0.0003%; Preferred nitrogen content is less than or equal to 0.0060%.
The mechanical property that above-mentioned alloy forged steel reaches sees Table 2.
The mechanical property of table 2 alloy forged steel of the present invention
| Tensile strength | Yield strength | Unit elongation | Relative reduction in area | Brinell hardness number |
| ≥1070MPa | ≥905Mpa | ≥14% | ≥35% | 300 ～ 388HBW |
The Mechanics Performance Testing of alloy forged steel of the present invention is by GB/T 228 metallic substance tensile test at room temperature methods and GB/T 231.1 metal static hardness test part 1s: test method is carried out.As seen, alloy forged steel of the present invention can satisfy the above brake disc of high-speed train of 250km/h fully to the requirement of forged steel mechanical property from table 2.
In order further to improve the performance of alloy forged steel, preferred, described manganese is 0.85%～1.19%; Further preferred, described manganese is 0.85%～1.10%.
Preferably, described chromium is 0.91%～2.00%; Further preferred, described chromium is 0.91%～1.95%; Further preferred again, described chromium is 0.91%～1.85%.
Preferably, described nickel is 0.71%～2.00%, and further preferred, described nickel is 0.71%～1.64%; Further preferred again, described nickel is 0.71%～1.61%; Further preferred, described nickel is 0.72%～1.61%.
Preferably, described molybdenum is 0.35%～0.70%; Further preferred, described molybdenum is 0.38%～0.63%; Further preferred again, described molybdenum is 0.38%～0.49%.
Preferably, described silicon is 0.20%～0.39%; Further preferred, described silicon is 0.22%～0.34%.
Preferably, the content of described phosphorus is less than or equal to 0.019%; Preferably, the content of described sulphur is less than or equal to 0.009%.
Preferably, oxygen level is less than or equal to 0.0020%; Hydrogen richness is less than or equal to 0.0005%; Nitrogen content is less than or equal to 0.0070%.
In further preferred embodiment, the mass percent of each component of described alloy forged steel is as follows:
Carbon 0.26%～0.35%; Silicon 0.22%～0.34%; Manganese 0.85%～1.41%; Phosphorus is less than or equal to 0.019%; Sulphur is less than or equal to 0.009%; Chromium 0.91%～1.85%; Nickel 0.72%～1.61%; Molybdenum 0.38%～0.63%; Surplus is iron and other elements; The content of other elements is less than or equal to 0.30%; Wherein, oxygen level is less than or equal to 0.0020%; Hydrogen richness is less than or equal to 0.0005%; Nitrogen content is less than or equal to 0.0070%.
In this preferred alloy forged steel, preferred described manganese is 0.85%～1.19%; Further preferred manganese is 0.85%～1.10% again.
In this preferred alloy forged steel, preferred described silicon is 0.20%～0.39%, and further preferred silicon is 0.22%～0.34%.
In this preferred alloy forged steel, preferred described molybdenum is 0.38%～0.49%.
In this preferred alloy forged steel, the metallographic structure after the modifier treatment of described alloy forged steel is the sorbite tissue.
Alloy forged steel of the present invention adopts conventional LF+VOD+VD (ladle oven process+vacuum-oxygen decarbonizing oven process+vacuum decarburization oven process) process for smelting steel to be prepared.
Role and preferred content range thereof can be referring to the descriptions of front relevant portion in forged steel is smelted for contained each chemical composition of alloy forged steel of the present invention.
The present invention also provides some concrete preferred embodiments, and each preferred embodiment is arranged by sequence number, is followed successively by 1#～12#.Their chemical composition shown in following table 3, other element among preferred embodiment 1#～12# all less than or equal to the content of other elements less than or equal to 0.30%; Comprise that the oxygen mass percentage content is less than or equal to 0.0020%; The hydrogen mass percentage content is less than or equal to 0.0005%; The nitrogen mass percentage content is less than or equal to 0.0070%; Also comprise vanadium≤0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
Its corresponding mechanical property is shown in following table 4.Alloy forged steel of the present invention can be for the manufacture of brake disc of high-speed train.
The below describes with the example that is fabricated to of Alloy Forging Steel Brake Disc of High-speed Train.
The first step, first preparation meets the alloy forged steel that each chemical composition requires in the table 1; Adopt conventional LF+VOD+VD (ladle oven process+vacuum-oxygen decarbonizing oven process+vacuum decarburization oven process) steel-making refinery practice, chemical composition proportioning by alloy forged steel of the present invention as shown in table 1 is smelted, and makes to meet the alloy forged steel steel ingot that each chemical composition requires in the table 1;
Second step, the alloy forged steel steel ingot that the first step is made rerolls and makes round steel;
In the 3rd step, the round steel that makes take second step makes the forging blank of required alloy forged steel, i.e. the Alloy Forging Steel Brake Disc blank as blank forges; Concrete forging flow process comprises: blank blanking → heating → ejection → heating → die forging → side cut, punching;
In the 4th step, to the forging blank of the 3rd alloy forged steel that make of step, namely the Alloy Forging Steel Brake Disc blank is heat-treated; Described thermal treatment comprises first normalizing treatment, then carries out modifier treatment;
In the 5th step, to the forging blank of the alloy forged steel after the thermal treatment, namely the Alloy Forging Steel Brake Disc blank carries out obtaining the retarding disc finished product after the machining.
Table 3 chemical composition (%)
| Sequence number | C | Si | Mn | P | S | | Ni | Mo | |
| 1# | 0.26 | 0.25 | 1.06 | 0.020 | 0.002 | 1.29 | 1.08 | 0.46 | |
| 2# | 0.27 | 0.25 | 1.10 | 0.017 | 0.002 | 1.32 | 1.09 | 0.47 | |
| 3# | 0.28 | 0.29 | 0.87 | 0.018 | 0.009 | 0.92 | 0.73 | 0.38 | |
| 4# | 0.29 | 0.25 | 1.10 | 0.015 | 0.001 | 1.32 | 1.10 | 0.47 | |
| 5# | 0.30 | 0.30 | 1.06 | 0.019 | 0.004 | 1.25 | 1.10 | 0.46 | |
| 6# | 0.31 | 0.27 | 1.10 | 0.019 | 0.004 | 1.32 | 1.22 | 0.45 | |
| 7# | 0.32 | 0.28 | 1.09 | 0.016 | 0.004 | 1.34 | 1.21 | 0.47 | |
| 8# | 0.33 | 0.31 | 1.07 | 0.016 | 0.005 | 1.24 | 1.12 | 0.45 | |
| 9# | 0.35 | 0.22 | 0.85 | 0.009 | 0.003 | 0.91 | 0.80 | 0.39 | |
| 10# | 0.27 | 0.40 | 0.95 | 0.013 | 0.008 | 1.56 | 0.85 | 0.59 | |
| 11# | 0.28 | 0.34 | 1.41 | 0.012 | 0.006 | 1.06 | 1.61 | 0.40 | |
| 12# | 0.27 | 0.32 | 0.92 | 0.013 | 0.007 | 1.85 | 0.72 | 0.63 |
Table 4 mechanical property
Alloy forged steel of the present invention for the manufacture of forging, thermal treatment and the machining flow process of brake disc of high-speed train is: alloy forged steel steel ingot → alloy forged steel round steel → blank blanking → heating → ejection → heating → die forging → side cut, punching → normalizing → modified → impeller blasting → flaw detection → machining → retarding disc finished product warehouse-in.
Below describe alloy forged steel of the present invention heat treating method, the heat treating method of Alloy Forging Steel Brake Disc blank in other words.Concrete heat treatment process is:
At first, carry out first normalizing treatment, be incubated 3～5 hours after namely being warming up to 860～920 ℃, air-cooled to normal temperature by blowing or similar fashion.
Then, carry out again modifier treatment, be incubated 3～5 hours after namely quenching is warming up to 860～920 ℃, shrend, carry out subsequently temper, be incubated 3～5 hours after namely being warming up to 550～620 ℃, by blowing similar fashion is air-cooled or by water spray or similar fashion water-cooled to normal temperature.
Preferably, the heat treating method of alloy forged steel of the present invention or Alloy Forging Steel Brake Disc blank is: the temperature-rise period when carrying out described normalizing treatment and quench treatment is, be incubated 1～2 hour after at first being warming up to 650 ℃～700 ℃, and then be warming up to 860 ℃～920 ℃.Can make like this alloy forged steel material be organized in phase transformation the time phase transformation abundant, further eliminate the distortion of intensification heat-processed interalloy forged steel forging or Alloy Forging Steel Brake Disc blank and crackle tendency.
Preferably, the heat treating method of alloy forged steel of the present invention or Alloy Forging Steel Brake Disc blank is: when carrying out described normalizing treatment and quench treatment, heat-up rate is 120 ℃～200 ℃/hour.Control certain heat-up rate, thereby can avoid causing that owing to heat-up rate is too fast thermal stresses makes greatly alloy forged steel of the present invention or Alloy Forging Steel Brake Disc blank produce the danger of distortion and crackle.
Alloy forged steel of the present invention or alloy forged steel mechanical property after heat treatment are: tensile strength is more than or equal to 1070MPa, yield strength is more than or equal to 905MPa, unit elongation is more than or equal to 14%, and relative reduction in area is more than or equal to 35%, and Brinell hardness number is 300 HBW～388HBW.
In order to make heat treated effect more stable, when used equipment for Heating Processing had the function of regulating heat-up rate, high temperature normalizing was processed and the heat-up rate of quench treatment is 120 ℃～200 ℃/hour; When used equipment for Heating Processing is not regulated the function of heat-up rate and heat-up rate when very fast, after high temperature normalizing and quenching are warming up to 650 ℃～700 ℃, be incubated 1～2 hour, and then be warming up to 860 ℃～920 ℃.
The thermal treatment process of alloy forged steel of the present invention or alloy forged steel is carried out modifier treatment (quenching+tempering) again for carrying out first normalizing treatment.Carry out first normalizing treatment, can eliminate banded structure in the forging tissue and thick crystal grain, thinning microstructure; After carrying out modifier treatment (quenching+tempering), can obtain the uniform sorbite tissue of fine microstructures, the material normal temperature strength increases substantially again, and toughness also slightly is improved.Normalizing treatment is seen Fig. 3 and Fig. 4 to the impact of alloy forged steel mechanical property of the present invention, can see, the forging that has simultaneously the alloy forged steel of normalizing treatment and modifier treatment step compares without normalizing treatment, only carry out the forging of the alloy forged steel of modifier treatment, have obvious advantage in tensile strength and two indexs of elongation.
In the embodiment of alloy forged steel of the present invention, carry out quenching heat treatment in 850 ℃～1050 ℃ scopes, quenching temperature is seen Fig. 5 and Fig. 6 to the impact of the mechanical property of alloy forged steel of the present invention.
By Fig. 5, Fig. 6 as can be known, raising with quenching temperature, the intensity of alloy forged steel of the present invention slightly is improved, and plasticity is fallen after rising, in 860～920 ℃ of scopes, quench, the mechanical property of alloy forged steel of the present invention all can satisfy the mechanical property requirements of the above EMU retarding disc of 250km/h alloy forged steel material, be that tensile strength is more than or equal to 1070MPa, yield strength is more than or equal to 905MPa, unit elongation is more than or equal to 14%, relative reduction in area is more than or equal to 35%, and Brinell hardness number is 300～388HBW.
The present invention's metallographic structure after heat treatment is the sorbite tissue, and the concrete form that its concrete form that amplifies 100 times sees Fig. 7, amplify 500 times is seen Fig. 8.
Table 5 is depicted as the chemical composition contrast of a preferred embodiment of the present invention and prior art.
The chemical composition contrast of table 5 embodiment of the invention and prior art
Table 6 is depicted as embodiment of the invention 1# and adopts the mechanical property after identical thermal treatment process is processed to contrast with prior art.The thermal treatment process that bi-material adopts is: insulation is 4 hours after being warming up to 900 ℃, and quenching is to normal temperature; And then carry out modifier treatment, and insulation was 4 hours after namely quenching was warming up to 900 ℃, shrend, and insulation was 4 hours after temper was warming up to 600 ℃, and blowing air is chilled to normal temperature.
The mechanical property contrast of table 6 embodiment of the invention and prior art
As can be seen from Table 6, the preferred embodiment of the present invention is by science, rational proportion to various alloying elements, and the mechanical property of prepared alloy forged steel material is better than the mechanical property of prior art.Particularly, tensile strength, yield strength, elongation and the relative reduction in area of the alloy forged steel of the preferred embodiment of the present invention are all apparently higher than prior art.
Table 7 is depicted as the thermal fatigue test result of the preferred embodiment of the present invention and prior art, namely imitate the retarding disc behaviour in service, sample is heated to 600 ℃, insulation for some time, then put into fast 20 ℃ water, after repeatedly carrying out 600 times, under metaloscope, observe the crack propagation situation of breach.Data in the table 7 show: the cracking resistance of the preferred embodiment of the present invention can obviously be better than prior art.
The thermal fatigue test result contrast of table 7 embodiment of the invention 1# and prior art
| The sample title | V-notch place crack length (mm) |
| Embodiment of the |
Approximately 0.24 |
| Prior art | Approximately 0.64 |
Alloy forged steel composition of the present invention and performance satisfy the performance requriements of the above EMU retarding disc of 250km/h fully, and have better toughness and tenacity.The present invention by the alloying constituents such as manganese, nickel, chromium and molybdenum in the alloy forged steel choose reasonable and and the rational proportion of other chemical composition such as carbon, silicon, make the various chemical compositions in the alloy forged steel obtain more reasonably coupling, thereby make alloy forged steel material of the present invention after suitable thermal treatment, grain refining, obtained good comprehensive mechanical property, improved hardening capacity and thermostrength, normal temperature strength and hot strength have also obtained increasing substantially.
The present invention is by suitably improving the content of nickel, and rationally adjust the content of manganese, chromium, molybdenum element, not only increase intensity but also avoided considerable influence to plasticity and toughness, thereby the alloy forged steel that the present invention is made has obtained good comprehensive mechanical property, has overcome prior art because of strength increase plasticity and the obvious deficiency that descends of toughness.
And the thermal treatment process of the forging of alloy forged steel of the present invention or alloy forged steel is carried out modifier treatment (quenching+tempering) again for carrying out first normalizing treatment.Carry out first normalizing treatment, can eliminate banded structure in the forging tissue and thick crystal grain, thinning microstructure, carry out again modifier treatment (quenching+tempering) after, can obtain the uniform sorbite tissue of fine microstructures, tensile strength, the yield strength of material are further improved; Normal temperature strength and hot strength also have lifting by a relatively large margin; Forging distortion and crackle tendency are less.
In addition, because alloying element kind, reasonable quantity that the present invention adds, forging distortion and crackle tendency are little, have good forging process performance, and reasonable heat treatment process, are conducive to this material in the application in railway industry and Other Engineering field; Each chemical composition of the present invention is more easy to control simultaneously, and it is convenient to smelt, and forges easily, and processing performance is good, more is conducive to industrial production control and reduces manufacturing cost.
The heat that the operating mode that it is pointed out that simultaneously retarding disc produces when braking is higher, requires the heat-resisting of material, and thermal diffusivity will be got well, and wear resistance is good.For the alloy forged steel, hardness and intensity are directly proportional usually, and intensity is high, and hardness is also high, and the wear resistance of respective material might as well.Because the hardness ratio prior art of Alloy Cast Steel material of the present invention is higher, therefore, its wear resistance also obviously is better than prior art.
LF+VOD+VD (ladle oven process+vacuum-oxygen decarbonizing oven process+vacuum decarburization oven process) steel-making refinery practice has been adopted in the smelting of alloy forged steel of the present invention, decrease oxygen, hydrogen, oxide gas content and inclusion content, further improved the mechanical property of material.Can certainly adopt other similarly steel-making refinery practice.
Alloy forged steel of the present invention can be used to forge the railway parts, especially is suitable for the alloy steel forgings such as brake disc of high-speed train, also can be used for forging the parts that other have similar mechanical property requirements, such as gear, snubber, hitch annex etc.
Claims (22)
1. an alloy forged steel is characterized in that, its each component and mass percent thereof are as follows: carbon 0.26%～0.35%; Silicon 0.15%～0.39%; Manganese 0.85%～1.50%; Phosphorus is less than or equal to 0.02%; Sulphur is less than or equal to 0.01%; Chromium 0.80%～2.00%; Nickel 0.70%～2.00%; Molybdenum 0.35%～1.00%; Surplus is iron and other elements, and the mass percent summation of described other elements is less than or equal to 0.30%.
2. alloy forged steel according to claim 1, it is characterized in that: described manganese is 0.85%～1.19%.
3. alloy forged steel according to claim 1, it is characterized in that: described manganese is 0.85%～1.10%.
4. alloy forged steel according to claim 1, it is characterized in that: described chromium is 0.91%～2.00%.
5. alloy forged steel according to claim 1, it is characterized in that: described chromium is 0.91%～1.95%.
6. alloy forged steel according to claim 1, it is characterized in that: described chromium is 0.91%～1.85%.
7. alloy forged steel according to claim 1, it is characterized in that: described nickel is 0.71%～2.00%.
8. alloy forged steel according to claim 1, it is characterized in that: described nickel is 0.71%～1.64%.
9. alloy forged steel according to claim 1, it is characterized in that: described nickel is 0.71%～1.61%.
10. alloy forged steel according to claim 1, it is characterized in that: described nickel is 0.72%～1.61%.
11. alloy forged steel according to claim 1 is characterized in that: described molybdenum is 0.35%～0.70%.
12. alloy forged steel according to claim 1 is characterized in that: described molybdenum is 0.38%～0.63%.
13. alloy forged steel according to claim 1 is characterized in that: described molybdenum is 0.38%～0.49%.
14. alloy forged steel according to claim 1 is characterized in that: described silicon is 0.20%～0.39%.
15. alloy forged steel according to claim 1 is characterized in that: described silicon is 0.22%～0.34%.
16. alloy forged steel according to claim 1 is characterized in that: described other elements comprise oxygen, hydrogen, nitrogen, and wherein the oxygen mass percentage content is less than or equal to 0.0020%; The hydrogen mass percentage content is less than or equal to 0.0005%; The nitrogen mass percentage content is less than or equal to 0.0070%.
17. alloy forged steel according to claim 1 is characterized in that: described other elements comprise in vanadium, titanium, tungsten, the niobium element any one or any two and more than; Its content is vanadium≤0.1%, titanium≤0.08%, tungsten≤0.04%, niobium≤0.05%.
18. alloy forged steel according to claim 1 is characterized in that: the metallographic structure after the modifier treatment of described alloy forged steel is the sorbite tissue.
19. according to claim 1～18 application of described arbitrary alloy forged steel is characterized in that: described alloy forged steel is applied to make brake disc of high-speed train.
20. the heat treating method of described arbitrary alloy forged steel is characterized in that according to claim 1～18, may further comprise the steps:
At first carry out normalizing treatment, be incubated 3～5 hours after being warming up to 860 ℃～920 ℃, air-cooled to normal temperature;
Then carry out modifier treatment: first quench treatment is incubated 3～5 hours, shrend after being warming up to 860 ℃～920 ℃; Carry out subsequently temper, be incubated 3～5 hours after being warming up to 550～620 ℃, air-cooled or water-cooled is to normal temperature.
21. the heat treating method of alloy forged steel according to claim 20 is characterized in that, the temperature-rise period when carrying out described normalizing treatment and quench treatment is, is incubated 1～2 hour after at first being warming up to 650 ℃～700 ℃, and then is warming up to 860 ℃～920 ℃.
22. the heat treating method of alloy forged steel according to claim 20 is characterized in that, when carrying out described normalizing treatment and quench treatment, heat-up rate is 120 ℃～200 ℃/hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245226.4A CN102953008B (en) | 2011-08-25 | 2011-08-25 | Alloy forged steel and its heat treatment method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110245226.4A CN102953008B (en) | 2011-08-25 | 2011-08-25 | Alloy forged steel and its heat treatment method and use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953008A true CN102953008A (en) | 2013-03-06 |
| CN102953008B CN102953008B (en) | 2015-06-17 |
Family
ID=47762386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110245226.4A Active CN102953008B (en) | 2011-08-25 | 2011-08-25 | Alloy forged steel and its heat treatment method and use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102953008B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352170A (en) * | 2013-07-05 | 2013-10-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | Alloy forged steel and production method and application thereof |
| CN103484636A (en) * | 2013-09-05 | 2014-01-01 | 通裕重工股份有限公司 | Production process of forged tee |
| CN103834771A (en) * | 2014-03-07 | 2014-06-04 | 湖州市千金宝云机械铸件有限公司 | Heat treatment method of wear-resistant cast steel |
| CN104131230A (en) * | 2014-07-25 | 2014-11-05 | 合肥市东庐机械制造有限公司 | Aging-resistant alloy steel for valves and manufacturing method thereof |
| CN105463331A (en) * | 2015-12-04 | 2016-04-06 | 南京东电检测科技有限公司 | Hot rolling alloy steel for train brake disc |
| CN106086679A (en) * | 2016-08-12 | 2016-11-09 | 南京工程学院 | A kind of bullet train Forging Steel Brake Disc Steel material and the Forging Technology of forging thereof |
| CN107151759A (en) * | 2017-06-02 | 2017-09-12 | 重庆大学 | It is a kind of to be used to preparing heavy-duty forging die has under the conditions of high temperature heavy load extraordinary cast steel and preparation method thereof |
| CN108277324A (en) * | 2018-04-20 | 2018-07-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | A kind of surface abrasion resistance treatment process of excavator bucket teeth crown |
| CN108842116A (en) * | 2018-06-15 | 2018-11-20 | 邯郸慧桥复合材料科技有限公司 | A kind of high-speed rail brake disc and its production method |
| CN109504903A (en) * | 2016-08-18 | 2019-03-22 | 江苏鼎泰工程材料有限公司 | A kind of low-alloy super-strength steel |
| CN115948696A (en) * | 2022-12-20 | 2023-04-11 | 中车齐齐哈尔车辆有限公司 | Cast steel material, coupler knuckle, preparation method of coupler knuckle and railway vehicle |
| CN116043114A (en) * | 2023-01-30 | 2023-05-02 | 马鞍山钢铁股份有限公司 | High-toughness alloy forged steel for high-speed rail brake disc with speed of 400 km per hour, heat treatment method and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706979A (en) * | 2004-06-07 | 2005-12-14 | 河南石油勘探局南阳石油机械厂 | Cast steel for bearing parts in mechanical lifting system and its making process |
| CN1940114A (en) * | 2006-05-31 | 2007-04-04 | 沈阳市铸威特殊钢有限公司 | High-hardenability die steel |
| CN101519751B (en) * | 2008-02-27 | 2011-06-15 | 宝山钢铁股份有限公司 | High-performance marine mooring chain steel and manufacturing method thereof |
-
2011
- 2011-08-25 CN CN201110245226.4A patent/CN102953008B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1706979A (en) * | 2004-06-07 | 2005-12-14 | 河南石油勘探局南阳石油机械厂 | Cast steel for bearing parts in mechanical lifting system and its making process |
| CN1940114A (en) * | 2006-05-31 | 2007-04-04 | 沈阳市铸威特殊钢有限公司 | High-hardenability die steel |
| CN101519751B (en) * | 2008-02-27 | 2011-06-15 | 宝山钢铁股份有限公司 | High-performance marine mooring chain steel and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 钱坤才: "高速列车铸钢制动盘材料的研究", 《粉末冶金材料科学与工程》 * |
| 钱坤才等: "高速列车制动盘材料研究", 《机车车辆工艺》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352170A (en) * | 2013-07-05 | 2013-10-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | Alloy forged steel and production method and application thereof |
| CN103352170B (en) * | 2013-07-05 | 2016-06-29 | 南车戚墅堰机车车辆工艺研究所有限公司 | Alloy wrought steel and production method thereof and application |
| CN103484636A (en) * | 2013-09-05 | 2014-01-01 | 通裕重工股份有限公司 | Production process of forged tee |
| CN103484636B (en) * | 2013-09-05 | 2015-04-22 | 通裕重工股份有限公司 | Production process of forged tee |
| CN103834771A (en) * | 2014-03-07 | 2014-06-04 | 湖州市千金宝云机械铸件有限公司 | Heat treatment method of wear-resistant cast steel |
| CN103834771B (en) * | 2014-03-07 | 2015-10-28 | 湖州市千金宝云机械铸件有限公司 | The heat treating method of wearable cast steel |
| CN104131230A (en) * | 2014-07-25 | 2014-11-05 | 合肥市东庐机械制造有限公司 | Aging-resistant alloy steel for valves and manufacturing method thereof |
| CN105463331A (en) * | 2015-12-04 | 2016-04-06 | 南京东电检测科技有限公司 | Hot rolling alloy steel for train brake disc |
| CN106086679A (en) * | 2016-08-12 | 2016-11-09 | 南京工程学院 | A kind of bullet train Forging Steel Brake Disc Steel material and the Forging Technology of forging thereof |
| CN106086679B (en) * | 2016-08-12 | 2020-04-10 | 南京工程学院 | Steel material for high-speed train forged steel brake disc and forging process of forging of steel material |
| CN109504903A (en) * | 2016-08-18 | 2019-03-22 | 江苏鼎泰工程材料有限公司 | A kind of low-alloy super-strength steel |
| CN109504903B (en) * | 2016-08-18 | 2021-01-29 | 江苏鼎泰工程材料有限公司 | Low-alloy ultrahigh-strength steel |
| CN107151759A (en) * | 2017-06-02 | 2017-09-12 | 重庆大学 | It is a kind of to be used to preparing heavy-duty forging die has under the conditions of high temperature heavy load extraordinary cast steel and preparation method thereof |
| CN108277324A (en) * | 2018-04-20 | 2018-07-13 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | A kind of surface abrasion resistance treatment process of excavator bucket teeth crown |
| CN108277324B (en) * | 2018-04-20 | 2019-06-18 | 安徽省宁国市亚晨碾磨铸件有限责任公司 | A kind of surface abrasion resistance treatment process of excavator bucket teeth tooth tip |
| CN108842116A (en) * | 2018-06-15 | 2018-11-20 | 邯郸慧桥复合材料科技有限公司 | A kind of high-speed rail brake disc and its production method |
| CN115948696A (en) * | 2022-12-20 | 2023-04-11 | 中车齐齐哈尔车辆有限公司 | Cast steel material, coupler knuckle, preparation method of coupler knuckle and railway vehicle |
| CN116043114A (en) * | 2023-01-30 | 2023-05-02 | 马鞍山钢铁股份有限公司 | High-toughness alloy forged steel for high-speed rail brake disc with speed of 400 km per hour, heat treatment method and production method thereof |
| CN116043114B (en) * | 2023-01-30 | 2024-04-12 | 马鞍山钢铁股份有限公司 | High-toughness alloy forged steel for high-speed rail brake disc with speed of 400 km per hour, heat treatment method and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102953008B (en) | 2015-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102953008B (en) | Alloy forged steel and its heat treatment method and use | |
| CN103510024B (en) | For the alloy cast steel of brake disc of high-speed train and heat treatment method thereof and the brake disc of high-speed train manufactured by this alloy cast steel | |
| CN102900794B (en) | Split-type train brake disc | |
| CN101671792B (en) | Spring steel and preparation method thereof | |
| CN103352170B (en) | Alloy wrought steel and production method thereof and application | |
| CN108220815B (en) | Hot work die steel with high heat resistance and high impact toughness for hot forging and preparation method thereof | |
| CN108048753A (en) | A kind of rail vehicle brake disc low-alloy steel and its heat treatment method | |
| CN103614634B (en) | Alloy spring silk and preparation method thereof | |
| CN101798661A (en) | Hot working die steel and preparation method thereof | |
| CN109735777B (en) | Anti-oxidation hot-work die steel and preparation method thereof | |
| CN102605271A (en) | Low-alloy high-intensity high-toughness steel and production method of low-alloy high-intensity high-toughness steel | |
| CN102900793B (en) | Brake disc of high-speed train | |
| CN100366779C (en) | Stone material cutting saw blade steel and its manufacturing method | |
| CN102453843A (en) | Ferrite heat resistant steel | |
| CN106756509B (en) | A kind of high-temperature alloy structural steel and its Technology for Heating Processing | |
| CN113832396B (en) | Long-life steel suitable for unconventional oil-gas operation fracturing pump valve body and forging method thereof | |
| CN110819901B (en) | High-strength brake disc bolt steel and heat treatment process thereof | |
| CN101343716B (en) | Low alloy cast steel | |
| CN106566953A (en) | Corrosion-resisting alloy forge piece and production method thereof | |
| CN105779893A (en) | Alloy cast steel used for high-speed train brake disc and high-speed train brake disc manufactured through alloy cast steel | |
| CN114196875B (en) | Stainless steel for valve plate and heat treatment method thereof | |
| CN106609341A (en) | Corrosion resisting stainless steel and production method thereof | |
| CN106567010A (en) | Corrosion-resistant stainless steel and production method thereof | |
| CN106567009A (en) | High-temperature-resistant corrosion-resistant stainless steel and production method thereof | |
| CN106609336A (en) | Acid-resistant stainless steel and production method thereof |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee after: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 81, No. Patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. Patentee before: CSR CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Patentee after: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China Patentee before: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. |
|
| CP03 | Change of name, title or address |