CN100549189C - Surface modified precipitation hardened stainless steel - Google Patents
Surface modified precipitation hardened stainless steel Download PDFInfo
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- CN100549189C CN100549189C CNB2004800021021A CN200480002102A CN100549189C CN 100549189 C CN100549189 C CN 100549189C CN B2004800021021 A CNB2004800021021 A CN B2004800021021A CN 200480002102 A CN200480002102 A CN 200480002102A CN 100549189 C CN100549189 C CN 100549189C
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 31
- 239000010935 stainless steel Substances 0.000 title claims abstract description 31
- 238000001556 precipitation Methods 0.000 title description 2
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000004881 precipitation hardening Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 239000011572 manganese Substances 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 239000010936 titanium Substances 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 239000010941 cobalt Substances 0.000 claims abstract description 6
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 239000010955 niobium Substances 0.000 claims abstract description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000009628 steelmaking Methods 0.000 claims abstract description 6
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 6
- 239000010937 tungsten Substances 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 43
- 229910003460 diamond Inorganic materials 0.000 claims description 15
- 239000010432 diamond Substances 0.000 claims description 15
- 150000004767 nitrides Chemical class 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 22
- 238000005240 physical vapour deposition Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005121 nitriding Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 208000034189 Sclerosis Diseases 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- GVEHJMMRQRRJPM-UHFFFAOYSA-N chromium(2+);methanidylidynechromium Chemical compound [Cr+2].[Cr]#[C-].[Cr]#[C-] GVEHJMMRQRRJPM-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000012791 sliding layer Substances 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2226/00—Manufacturing; Treatments
- F16F2226/02—Surface treatments
Abstract
The present invention relates to carry out the precipitation-hardening stainless steel of surface hardening and coating, described surface has low stiction and improved abrasion resistance.And, relate to described stainless top coat, wherein surface hardening and described coating are finished simultaneously.Resulting coating steel has very high hardness and improved adhesion property simultaneously.The stainless steel matrix of described precipitation hardening has following component (by weight percentage): carbon the most about 0.1, nitrogen the most about 0.1, copper from about 0.5 to about 4, chromium from about 10 to about 14 Molybdenum from about 0.5 to about 6, nickel is from about 7 to about 11, and it is about 9 that cobalt 0 is up to, tantalum the most about 0.1, niobium the most about 0.1, vanadium is the most about 0.1, and tungsten is the most about 0.1, aluminium from about 0.05 to about 0.6, titanium from about 0.4 to about 1.4, silicon is the most about 0.7, and manganese is the most about 1.0, weighs additive and impurity into iron and the normal common steel-making that takes place.
Description
Technical field
The present invention relates to carry out the precipitation-hardening stainless steel of surface hardening and coating, described surface has low stiction and improved abrasion resistance.And, relate to described stainless top coat, wherein surface hardening and described coating are finished simultaneously.Resulting coated steel has the improved fusible very high hardness that also has simultaneously.This steel is highly beneficial in the application that is used for to high strength and/or high tenacity, high-wearing feature and low friction having aspect comprehensive high request very, for example with the vibroshock of expensive effective ways production and the component and the hydraulic efficiency system of oil engine.
Background technology
Usually, Stainless Steel Alloy is softer than other steel.Therefore, they often carry out hardening treatment, and this processing is bulk treatment or surface treatment basically.This bulk treatment means that the whole cross section that spreads all over material makes the sclerosis of the even matter of steel, for example sheet material or wire rod, and surface treatment means the surface of a stiffened members, and remaining matrix is unaffected substantially.
US-A-5 for example, 632,826 (and WO-A-95/09930), it discloses a kind of precipitation-hardening stainless steel by with reference to whole being included in the teachings herein, wherein, strengthens based on separating out of whole particles of material.This reinforcement particulate has class crystalline texture, and described structure is mainly with reaching 1000 hours aging time and obtaining up to 650 ℃ of temper.This enhancing comprises increases the tensile strength of 200Mpa at least.
The additive method of the part that is used for the precipitation-hardening stainless steel and/or is made by described steel is disclosed in WO-A-93/07303, WO-A-01/36699 and WO-A-01/14601, this its by with reference to all being included in the application's the content.For example, according to WO-A-01/36699, before timeliness/sclerosis, the production of material should make product carry out cold shaping, is deformed to enough degree, is used to obtain at least 50% martensite content, preferably is at least 70% martensite content.
Be different from the hardening treatment that influences steel of whole and even matter, in many application, stainless steel component has surfaces hardened, is referred to as surface hardening usually.Case-hardened notion is by making it be rich in carbon or other compositions, and makes the surface denaturation of this part have the layer of material thin layer, so that make this surface ratio matrix hard, this matrix is the steel main body that not influenced by surface modification.
Stainless steel often carries out surface hardening by carburizing to be handled.This method is that the carbon atom in the solution diffuses into this matrix, i.e. the surface of steel.Known case hardening process at high temperature carries out.Carburizing treatment is carried out (for Stainless Steel Alloy) under about 540 ℃ or higher temperature.But this pyroprocessing can be impelled the formation of carbide at described stainless steel surface.
As mentioned above, in many machine applications, not only the hardness on steel surface but also stiction all are the problems of knowing.Even if be lubricated, stiction also may produce sizable frictionloss, particularly under situation about moving back and forth.This examples of applications is, the vibroshock of vehicle for example, and hydraulic efficiency system in the production and the part in the oil engine are as Cam Follower.Under the situation of mode of motion or the variation of its direction high frequency, stiction can cause that local temperature increases, and this will cause degradation and/or work-ing life to reduce and seepage danger.
In order to reduce stiction, exposed surface applies with some layer form usually, and this layer form has than the better character of steel matrix below it.Except low friction was provided, a kind of desired character of described layer was that this matrix of protection is not subjected to mechanical wear.Therefore, the layer that is applied should be hard as far as possible.In manufacturing fluid power operational control unit, high stiction may cause the resistance of motion, and this will reduce the precision of hydraulic unit.The problem of described stiction can occur in, for example in the oil engine, in the Cam Follower of entrance and exit valve.The surface that this follower acts on thereon is exposed under the very high local load, and this will cause serious wear problem.
The ordinary method that reduces stiction and increase hardness is to make very smooth surface, and carries out hard chrome then on this surface and electroplate.But thereby reach the magnitude of about 1000Hv for low-alloy forged steel firmness level.In order to support this layer, surface hardening was carried out before the chromium plating of being everlasting.Because the variation of size when carrying out hardening treatment, this processing more complicated, and comprise repeatedly location to workpiece.
A kind of possible solution of the problem that matrix hardness is different with the hardness that applies coating is the applied layer system.Processed workpiece comprises the matrix of steel for example or matrix and near the hard material layer system that is replenished by metal level of this matrix, and last sliding layer system, thereby the latter is preferably carbide and constitutes, particularly the carbon of wolfram varbide or chromium carbide and dispersed.Though obtain good hardness value and low stiction, the composite system of several layers is complicated, consuming time and expensive for producing.
Another kind of optionally scheme is the form layers system, and it comprises the tack coat that is arranged on the matrix, the skin that is arranged on the transition layer on this tack coat and is made of quasi-diamond.This tack coat comprises at least a from following one group element, and this group element is made up of for example No. 4, No. 5 and 6 work song group elements and silicon.This transition layer comprises quasi-diamond.This layer system has the hardness of 15Gpa at least, preferred 20Gpa at least, and according to VDI 3824 (" quality-guarantee under PVD and the hard situation about applying of CVD "), page 4, cohesive strength is at least 3HF.
Summary of the invention
In view of above-mentioned, main purpose of the present invention is to obtain low stiction and anti abrasive stainless steel surface.
Another object of the present invention is with simple and cost efficient manner, with the least possible operation steps, hangs down stiction in stone and anti abrasive stainless steel surface acquisition.
Another purpose of the present invention is to make the member of complex geometric shapes with the described stainless steel that has low stiction on stone and anti abrasive surface.
On the one hand, the invention provides the stainless method of a kind of production, this stainless steel has low stiction on hardened, stone and anti abrasive surface, described method comprises uses PVD, with with case-hardened same operation in apply low stiction coating, wherein said steel is exposed between 450 to 500 ℃, and described steel is hardened, and described stainless steel has following component (by weight percentage):
Carbon the most about 0.1
Nitrogen the most about 0.1
Copper from about 0.5 to about 4
Chromium from about 10 to about 14
Molybdenum from about 0.5 to about 6
Nickel from about 7 to about 11
Cobalt is up to about 9 from 0
Tantalum the most about 0.1
Niobium the most about 0.1
Vanadium the most about 0.1
Tungsten the most about 0.1
Aluminium from about 0.05 to about 0.6
Titanium from about 0.4 to about 1.4
Silicon the most about 0.7
Manganese the most about 1.0
Iron is weighed
And the common steel-making additive and the impurity that exist usually.
According to aforesaid method, wherein should low stiction coating comprise quasi-diamond and be added with in the quasi-diamond of wolfram varbide and titanium nitride one or more.
According to aforesaid method, wherein said coating mainly is made of an individual layer.
According to aforesaid method, wherein said coating mainly is made of an individual layer of quasi-diamond.
According to aforesaid method, wherein said coating mainly is made of the individual layer of the quasi-diamond that is added with wolfram varbide.
According to aforesaid method, wherein said coating mainly is made of titanium nitride.
According to aforesaid method, wherein said precipitation-hardening stainless steel is strengthened by separating out of class crystalline texture particulate.
Aspect another, provide a kind of production stainless method, this stainless steel has low stiction on stone and anti abrasive surface, described method comprises uses PVD, this stainless surface with article on plasma body nitrogenize in same operation applies low stiction coating, and described stainless steel has following component (by weight percentage):
Carbon the most about 0.1
Nitrogen the most about 0.1
Copper from about 0.5 to about 4
Chromium from about 10 to about 14
Molybdenum from about 0.5 to about 6
Nickel from about 7 to about 11
Cobalt is up to about 9 from 0
Tantalum the most about 0.1
Niobium the most about 0.1
Vanadium the most about 0.1
Tungsten the most about 0.1
Aluminium from about 0.05 to about 0.6
Titanium from about 0.4 to about 1.4
Silicon the most about 0.7
Manganese the most about 1.0
Iron is weighed
And the common steel-making additive and the impurity that exist usually.
According to aforesaid method, wherein should low stiction coating comprise quasi-diamond and be added with in the quasi-diamond of wolfram varbide and titanium nitride one or more.
According to aforesaid method, wherein said steel is exposed between 450 to 500 ℃, and this steel is hardened.
Embodiment
Therefore, the present invention relates to the stainless steel of particular category is applied the method for low stiction coating.And this low stiction coating causes stone and anti abrasive surface.According to the explanation of above-mentioned prior art, this coating applies according to well-known PVD (physical vapor deposition) technology.This steel has produced to have wonderful character, and promptly having sizable inner hardness when applying coating increases, thereby forms necessary hard area supported layer to support this hard and low friction-top coating.Because PVD operates under the lower temperature and carries out, the size of workpiece is held and without any distortion.Utilize the PVD technology for producing cylinder and the piston rod for example be used for vibroshock, the piston that is used for the hydraulic pressure guide arrangement to some specific Stainless Steel Alloy, and the Cam Follower of oil engine bring many advantages.
Before surface modification, select to be used for one group of suitable stainless steel of the object of the invention, it has following component (by weight percentage) scope:
Carbon the most about 0.1
Nitrogen the most about 0.1
Copper from about 0.5 to about 4
Chromium from about 10 to about 14
Molybdenum from about 0.5 to about 6
Nickel from about 7 to about 11
Cobalt is up to about 9 from 0
Tantalum the most about 0.1
Niobium the most about 0.1
Vanadium the most about 0.1
Tungsten the most about 0.1
Aluminium from about 0.05 to about 0.6
Titanium from about 0.4 to about 1.4
Silicon the most about 0.7
Manganese the most about 0.1
Iron is weighed
And the common steel-making additive and the impurity that exist usually.
Described as prior art US-A-5632826, the WO-A-93/07303, WO-A-01/14601 and the WO-A-01/36699 that mention in the above, this stainless steel is because the result of precipitation-hardening comprises the class crystal fine grain in martensite microstructure.
In order to finish according to surface treatment of the present invention, select specific precipitation-hardening stainless steel, it has following component (by weight percentage):
C+N the most about 0.05
Chromium 12.00
Manganese 0.30
Nickel 9.00
Molybdenum 4.00
Titanium 0.90
Aluminium 0.30
Silicon 0.15
Copper 2.00
Iron is weighed
This steel is applied low stiction coating, and described coating mainly comprises titanium nitride or quasi-diamond (DLC), and it applies with the PVD technology.This comprises metalwork is exposed to several hrs under the temperature between about 450 to 500 ℃.In this temperature range, and after the timed interval of determining, this steel hardens, thereby obtains the hardness of 650Hv size.By this way, in same operation, obtain extraordinary coating supporting.Because lower treatment temp, this workpiece keeps its shape and size with very high precision, and this will cause the quite working method of simplification.Simultaneously, although layer is very thin, its thickness is the magnitude of about 6 μ m (micron), compares with the hard chrome coating that 25 μ m of the hardened surface of routine are thick, obtains extraordinary wearability.Therefore, the invention has the advantages that applying low stiction and anti abrasive coating and necessary surface hardening finishes in same operation.
Another significant advantage of the present invention is to have when being used to make tubular member tubular when workpiece, because the good cold-workability of stainless steel according to the present invention, make tubular products easily, thereby can avoid the slotted hole drilling operation big the needed expense of common available rod product.
Should be noted that ought be for example, needs firmly especially during with anti abrasive surface in some engine parts, is included in matrix and is feasible according to carrying out pecvd nitride change of the present invention between the PVD coating of the present invention.Pecvd nitride is another kind of case hardening process, and this method is carried out with the form of glow discharge in the mixed gas that is comprising nitrogen under the pressure of about 100 to about 1000Pa (about 1 to about 10 millibars).This is to handle one of used method of stainless steel surface, thereby causes having high rigidity and fabulous anti abrasive nitrogen diffusion layer.The nitrogenize sclerosis causes by separating out nitride at upper layer.Pecvd nitride is the surface hardening process of developing recently.Owing in this method, can set up same thermochemistry condition, this technology replaces traditional nitriding method, for example gas nitriding and nitrogenize carburizing (short-term gas nitriding, salt bath nitriding and Tai Ni Fil (tenifer) (salt-bath nitriding technology is called " Tuffride method " sometimes) handle).Pecvd nitride reaches higher hardness and wear-resistant, produces less distortion simultaneously.And pecvd nitride is that very cost is effective.This is owing to often do not need subsequently mechanical workout, precision work and residue to remove technology.Equally, do not need for example to polish yet, additional sfgd. such as phosphatizing.
Pecvd nitride carries out in vacuum oven.Adopt about 400 to the interior treatment temp of about 580 ℃ scope, to satisfy relevant processing requirement.The usually conduct temperature is to arrive in about 500 ℃ scope about 420.According to processed part and desirable structure and formation the layer thickness, the treatment time changed between about 10 minutes to about 70 hours.The most frequently used process gas is ammonia, nitrogen, methane and hydrogen.Oxygen and carbon dioxide is generally used in the oxygenizement corrosion protection step afterwards.Except the type of used process gas, pressure, temperature and time are the significant parameters of treatment process.According to those skilled in the art's knowledge, by changing these parameters, can accurately adjust plasma nitridation process, in any processed part, to reach the character of accurate hope.
Any iron can both carry out pecvd nitride.This method does not need to use the nitriding steel of particular type.And the result that pecvd nitride obtains can reappear with split-hair precision.This point is particularly important when making series product.But, the not obvious minimizing stiction of pecvd nitride.Stainless steel is carried out twice processing about 450 to about 500 ℃ temperature and can not have problems the trend that does not have deliquescing because it is easy to stand this temperature.
This stainless mechanical property is:
Tensile strength, Rm 1700MPa to 2000MPa
Yield strength, R
P0.21500MPa to 1800MP
Unit elongation 8% to 6%
Young's modulus 200000Mpa
Total hardness 450 is to 650Hv10, and about 45 to 58HRC
The about 3000Hv10 of surface hardness
Toughness shock strength (Charpy V)
At-20 ℃, minimum is 27J
Even if steel of the present invention still keeps its mechanical properties after the use for a long time under up to 400 ℃ high temperature.
It is about 10% that the thermal expansivity of steel of the present invention is lower than carbon steel, is lower than conventional stainless steel, as the 304L of ASTM type, more than 30%.Steel of the present invention can cold shaping, and can bend to (tight) radius of tightening.It also is suitable for common process operation, for example cutting, turning and grinding.
Also have, when using TIG and MIG welding process, this steel has good weldability.Another advantage of steel of the present invention is that with the steel of for example standard, the 304L as the ASTM type compares, and has also improved erosion resistance.
Principle of the present invention, preferred embodiment and operator scheme have been described in the explanation in front.But the present invention who wants here to protect is not interpreted as and is limited in disclosed specific form, because these forms are considered to illustrative, rather than restrictive.Those skilled in the art can carry out various variations and change under the situation that does not break away from spirit of the present invention.
Claims (10)
1. produce stainless method for one kind, this stainless steel has low stiction on hardened, stone and anti abrasive surface, described method comprises the PVD technology that adopts, with with case-hardened same operation in apply low stiction coating, wherein said steel is exposed between 450 to 500 ℃, described steel is hardened, and described stainless steel has following component (by weight percentage):
Carbon maximum 0.1
Nitrogen maximum 0.1
Copper from 0.5 to 4
Chromium from 10 to 14
Molybdenum from 0.5 to 6
Nickel from 7 to 11
Cobalt is up to 9 from 0
Tantalum maximum 0.1
Niobium maximum 0.1
Vanadium maximum 0.1
Tungsten maximum 0.1
Aluminium from 0.05 to 0.6
Titanium from 0.4 to 1.4
Silicon maximum 0.7
Manganese maximum 1.0
Iron is weighed
And general common steel-making additive and the impurity that exists.
2. method according to claim 1 wherein should low stiction coating comprises quasi-diamond and is added with in the quasi-diamond of wolfram varbide and titanium nitride one or more.
3. method according to claim 2, wherein said coating mainly are made of an individual layer.
4. method according to claim 3, wherein said coating mainly are made of an individual layer of quasi-diamond.
5. method according to claim 3, wherein said coating mainly is made of the individual layer of the quasi-diamond that is added with wolfram varbide.
6. method according to claim 2, wherein said coating mainly is made of titanium nitride.
7. method according to claim 1, wherein said precipitation-hardening stainless steel are strengthened by separating out of class crystalline texture particulate.
8. produce stainless method for one kind, this stainless steel has low stiction on stone and anti abrasive surface, described method comprises the PVD technology of using, in same operation stainless pecvd nitride surface is applied low stiction coating, described stainless steel has following component (by weight percentage):
Carbon maximum 0.1
Nitrogen maximum 0.1
Copper from 0.5 to 4
Chromium from 10 to 14
Molybdenum from 0.5 to 6
Nickel from 7 to 11
Cobalt is up to 9 from 0
Tantalum maximum 0.1
Niobium maximum 0.1
Vanadium maximum 0.1
Tungsten maximum 0.1
Aluminium from 0.05 to 0.6
Titanium from 0.4 to 1.4
Silicon maximum 0.7
Manganese maximum 1.0
Iron is weighed
And general common steel-making additive and the impurity that exists.
9. method according to claim 8 wherein should low stiction coating comprises quasi-diamond and is added with in the quasi-diamond of wolfram varbide and titanium nitride one or more.
10. according to Claim 8 or 9 described methods, wherein said steel is exposed between 450 to 500 ℃, and this steel is hardened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0300073A SE526501C2 (en) | 2003-01-13 | 2003-01-13 | Method of surface modifying a precipitation-hardened stainless steel |
| SE03000734 | 2003-01-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735698A CN1735698A (en) | 2006-02-15 |
| CN100549189C true CN100549189C (en) | 2009-10-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800021021A Expired - Fee Related CN100549189C (en) | 2003-01-13 | 2004-01-12 | Surface modified precipitation hardened stainless steel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040173288A1 (en) |
| EP (1) | EP1599611A1 (en) |
| JP (1) | JP4511514B2 (en) |
| CN (1) | CN100549189C (en) |
| SE (1) | SE526501C2 (en) |
| WO (1) | WO2004063400A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE525291C2 (en) * | 2002-07-03 | 2005-01-25 | Sandvik Ab | Surface-modified stainless steel |
| SE526481C2 (en) * | 2003-01-13 | 2005-09-20 | Sandvik Intellectual Property | Surface hardened stainless steel with improved abrasion resistance and low static friction |
| TW200641153A (en) * | 2003-04-08 | 2006-12-01 | Gainsmart Group Ltd | Ultra-high strength weathering steel and method for making same |
| EP1722000A1 (en) * | 2005-05-12 | 2006-11-15 | Gainsmart Group Limited, a Corporation of the British Virgin Islands with offices at: | High strength stainless chromium-nickel steel without aluminium and titanium, and method for making same |
| EP1722001A1 (en) * | 2005-05-12 | 2006-11-15 | Gainsmart Group Limited, a Corporation of the British Virgin Islands with offices at: | High strength weathering nickel-cobalt-steel without aluminium and titanium and method for making same |
| US20070137050A1 (en) * | 2005-05-27 | 2007-06-21 | Eveready Battery Company, Inc. | Razor blades and compositions and processes for the production of razor blades |
| SE0502312L (en) * | 2005-10-17 | 2007-04-10 | Sandvik Intellectual Property | Thin-walled pipe and products comprising such a pipe |
| US7922968B2 (en) | 2005-10-25 | 2011-04-12 | Posco | Corrosion resistance improved steel sheet for automotive muffler and method of producing the steel sheet |
| AT504482B1 (en) * | 2007-03-01 | 2008-06-15 | Ruebig Gmbh & Co Kg | Producing optionally-doped coating of amorphous silicon, germanium or their oxides on metallic substrate, subjects area to oxidation before coating deposition |
| JP2009203541A (en) * | 2008-02-29 | 2009-09-10 | Ntn Corp | Sliding member |
| US9677160B2 (en) * | 2011-03-03 | 2017-06-13 | Nkk Tubes | Low C-high Cr 862 MPa-class steel tube having excellent corrosion resistance and a manufacturing method thereof |
| EP2686481B1 (en) * | 2011-03-18 | 2017-07-12 | PrimeBlade Sweden AB | Blade shaped tool and method for its manufacturing |
| UA109963C2 (en) * | 2011-09-06 | 2015-10-26 | CATHANE STEEL, APPROVING CONSEQUENCES OF SEPARATION OF PARTS AFTER HOT FORMING AND / OR CUTTING IN TOOL, THAT HAS A HIGHER MACHINE | |
| CN104694852A (en) * | 2015-03-20 | 2015-06-10 | 苏州科胜仓储物流设备有限公司 | High-strength steel plate for light goods shelves and forging process thereof |
| CN108103402B (en) * | 2017-12-26 | 2019-07-19 | 西华大学 | A kind of rail transit vehicle body stainless steel and the preparation method and application thereof |
| CN114107883B (en) * | 2021-11-29 | 2024-01-12 | 上海航天设备制造总厂有限公司 | Local ion nitriding method for inner cavity of precipitation hardening stainless steel annular part |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988955A (en) * | 1972-12-14 | 1976-11-02 | Engel Niels N | Coated steel product and process of producing the same |
| USH1210H (en) * | 1990-04-04 | 1993-07-06 | Surface hardening of reprographic machine components by coating or treatment processes | |
| JP2917450B2 (en) * | 1990-07-24 | 1999-07-12 | 大同特殊鋼株式会社 | Stainless steel with excellent corrosion resistance |
| US5197783A (en) * | 1991-04-29 | 1993-03-30 | Esso Resources Canada Ltd. | Extendable/erectable arm assembly and method of borehole mining |
| US5241748A (en) * | 1991-06-27 | 1993-09-07 | Teikoku Piston Ring Co., Ltd. | Method for manufacturing a compression ring |
| JPH0544839A (en) * | 1991-08-09 | 1993-02-23 | Teikoku Piston Ring Co Ltd | Combined oil ring |
| JPH06158230A (en) * | 1992-11-24 | 1994-06-07 | Nippon Steel Corp | Stainless steel material for ultrahigh vacuum apparatus excellent in corrosion resistance and manufacture of ultrahigh vacuum vessel |
| JP3567280B2 (en) * | 1993-03-23 | 2004-09-22 | 日新製鋼株式会社 | Extremely soft austenitic stainless steel |
| DE4421144C2 (en) * | 1993-07-21 | 2003-02-13 | Unaxis Balzers Ag | Coated tool with increased service life |
| SE508684C2 (en) * | 1993-10-07 | 1998-10-26 | Sandvik Ab | Precision-hardened iron alloy with quasi-crystalline structure particles |
| GB9715180D0 (en) * | 1997-07-19 | 1997-09-24 | Univ Birmingham | Process for the treatment of austenitic stainless steel articles |
| SE518600C2 (en) * | 1999-11-17 | 2002-10-29 | Sandvik Ab | automotive Suppliers |
| JP2003301888A (en) * | 2002-04-12 | 2003-10-24 | Tsubakimoto Chain Co | Silent chain |
| SE525291C2 (en) * | 2002-07-03 | 2005-01-25 | Sandvik Ab | Surface-modified stainless steel |
| SE526481C2 (en) * | 2003-01-13 | 2005-09-20 | Sandvik Intellectual Property | Surface hardened stainless steel with improved abrasion resistance and low static friction |
-
2003
- 2003-01-13 SE SE0300073A patent/SE526501C2/en not_active IP Right Cessation
-
2004
- 2004-01-12 JP JP2006500745A patent/JP4511514B2/en not_active Expired - Fee Related
- 2004-01-12 CN CNB2004800021021A patent/CN100549189C/en not_active Expired - Fee Related
- 2004-01-12 WO PCT/SE2004/000018 patent/WO2004063400A1/en active Application Filing
- 2004-01-12 EP EP04701444A patent/EP1599611A1/en not_active Withdrawn
- 2004-01-13 US US10/755,347 patent/US20040173288A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004063400A1 (en) | 2004-07-29 |
| SE0300073D0 (en) | 2003-01-13 |
| JP2006518007A (en) | 2006-08-03 |
| SE526501C2 (en) | 2005-09-27 |
| CN1735698A (en) | 2006-02-15 |
| US20040173288A1 (en) | 2004-09-09 |
| SE0300073L (en) | 2004-07-14 |
| EP1599611A1 (en) | 2005-11-30 |
| JP4511514B2 (en) | 2010-07-28 |
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