SE523984C2 - Process for making a metal structural part for a rolling bearing - Google Patents
Process for making a metal structural part for a rolling bearingInfo
- Publication number
- SE523984C2 SE523984C2 SE0301068A SE0301068A SE523984C2 SE 523984 C2 SE523984 C2 SE 523984C2 SE 0301068 A SE0301068 A SE 0301068A SE 0301068 A SE0301068 A SE 0301068A SE 523984 C2 SE523984 C2 SE 523984C2
- Authority
- SE
- Sweden
- Prior art keywords
- temperature
- structural part
- steel
- carrying
- structural
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000005096 rolling process Methods 0.000 title claims description 10
- 239000002184 metal Substances 0.000 title claims description 3
- 238000005496 tempering Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 238000003303 reheating Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910000734 martensite Inorganic materials 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 229910001339 C alloy Inorganic materials 0.000 claims description 2
- 229910001199 N alloy Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 238000007730 finishing process Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 229910000897 Babbitt (metal) Inorganic materials 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 9
- 238000005204 segregation Methods 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/08—Modifying the physical properties of iron or steel by deformation by cold working of the surface by burnishing or the like
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
- C21D2261/00—Machining or cutting being involved
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/06—Temperature
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/08—Time
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/12—Force, load, stress, pressure
- F16C2240/18—Stress
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
25 30 35 40 Företrädesvis ligger temperaturen vid genomförande av steget c) mellan 80°C och 400°C. Preferably, the temperature in carrying out step c) is between 80 ° C and 400 ° C.
Därvid har det visat sig speciellt fördelaktigt, att hålla temperaturen i ett område mellan 80°C och 150°C. Den yttre värmetillförseln, som tjänar för uppvärmning av konstruktions- delen under vibrationsslipningsbehandlingen, kan exempelvis ske via mediet eller via behållaren.In this case, it has proved particularly advantageous to keep the temperature in a range between 80 ° C and 150 ° C. The external heat supply, which serves to heat the structural part during the vibration grinding treatment, can take place, for example, via the medium or via the container.
Konstruktionsdelen hålles vid genomförande av det ovannämnda steg c) företrädesvis under en tid av åtminstone 10 minuter vid denna temperatur; speciellt fördelaktigt har det visat sig vara med en behandlingstid av minst 15 minuter och högst 2 timmar. Därvid kan tiden väljas kortare med tilltagande temperatur.The construction part is kept in carrying out the above-mentioned step c) preferably for a time of at least 10 minutes at this temperature; It has been found to be particularly advantageous to have a treatment time of at least 15 minutes and at most 2 hours. In this case, the time can be chosen shorter with increasing temperature.
I synnerhet när temperaturen vid genomförande av det ovannämnda steget c) låg mellan 80°C och 120°C, lät sig en ytterligare förbättring av materialegenskaperna uppnås därigenom, att konstruktionsdelen efter genomförande av det ovannämnda steget c) eftervärmdes till en temperatur över rumstemperatur och under anlöpnings- eller strukturomvandlingstemperaturen. Vid eftervärmningen kan konstruktionsdelen stanna kvar i vibrationsslipningsanläggnlngen. Företrädesvis är det anordnat, att temperaturen vid eftervärmningen är lika med temperaturen vid genomförande av det ovannämnda steget c). Vidare har det visat sig bra, om konstruktionsdelen vid eftervärmningen hålles vid temperaturen under en tid av minst 5 minuter; som maximal eftervärmningstid har ett värde på 2 timmar visat sig vara gynnsamt. Åter kan varaktigheten därvid minskas med ökande temperatur. På ytan kan det genom eftervärmningen uppkomma en lätt reducering av tryckegenspänningarna efter vibrationsslipningen, vilket emellertid är utan betydelse till exempel vid användning för rullningslager.In particular, when the temperature in carrying out the above-mentioned step c) was between 80 ° C and 120 ° C, a further improvement of the material properties could be achieved in that the construction part after carrying out the above-mentioned step c) was reheated to a temperature above room temperature and below tempering or structural conversion temperature. During reheating, the structural part can remain in the vibration grinding system. Preferably, it is provided that the temperature during the reheating is equal to the temperature when carrying out the above-mentioned step c). Furthermore, it has proved good if the construction part is kept at the temperature during the reheating for a period of at least 5 minutes; as a maximum reheating time, a value of 2 hours has proven to be favorable. Again, the duration can be reduced with increasing temperature. On the surface, a slight reduction of the compressive stresses after the vibration grinding can occur due to the reheating, which, however, is irrelevant, for example when used for rolling bearings.
Värmebehandlingen enligt det ovannämnda steget a) kan vara en martensitisk genomhärdning, en sätthärdning eller en induktionshärdning av ett stål med avslutande kortvarig eller konventionell anlöpningspocess. Vid värmebehandlingen kan det också handla om en bainitisk härdnlng av ett stål. Slutligen kan Värmebehandlingen också vara en härdnlng av stålet i en martensitisk-bainitisk resp. bainitisk-martensitisk blandstruktur.The heat treatment according to the above-mentioned step a) may be a martensitic through-hardening, a set-hardening or an induction hardening of a steel with a final short-term or conventional tempering process. The heat treatment can also be a bainitic hardening of a steel. Finally, the heat treatment can also be a hardening of the steel in a martensitic-bainitic resp. bainitic-martensitic mixed structure.
Vidare kan det vara anordnat, att det efter genomförande av det ovan nämnda steget c) på konstruktionsdelen utföres en avslutande finbearbetning, vars påverkningszoner är begränsade till ett nära ytan beläget kantparti på materialet. Vid den avslutande finbearbetningen kan det röra sig om en heningsprocess.Furthermore, it can be arranged that after carrying out the above-mentioned step c) on the construction part a final finishing is carried out, the zones of influence of which are limited to an edge portion of the material located close to the surface. At the final finishing, it may be a hening process.
Slutligen kan det vara anordnat, att materialet i konstruktionsdelen är en metallisk legering med intermediärt lösta atomer, i synnerhet ett kol- och/eller kvävelegerat stål.Finally, it can be arranged that the material in the structural part is a metallic alloy with intermediate dissolved atoms, in particular a carbon and / or nitrogen alloy steel.
Materialet i konstruktionsdelen kan vara ett för komponenter till ett rullnings- eller glidlager lämpligt stål, i synnerhet ett rullningslagerstål eller ett sätthärdningsstål.The material in the structural part can be a steel suitable for components of a rolling or sliding bearing, in particular a rolling bearing steel or a set hardening steel.
I ritningen illustreras för ett sätthärdat, induktionshärdat eller bainitiskt härdat stål exemplifierande egenspännings-djupförlopp, vilka har mätts röntgenografiskt. De visar: 10 15 20 25 30 35 40 . a u ~ »u 1 :panna Fig. 1 egenspänningens djupsträckning efter en vibrationsslipningsbehandling, och Fig. 2 egenspänningens djupsträckning för vibrationsslipningsbehandling efter hårdsvarvning.The drawing illustrates for a set hardened, induction hardened or bainitic hardened steel exemplary natural voltage depth processes, which have been measured by X-ray. They show: 10 15 20 25 30 35 40. a u ~ »u 1: boiler Fig. 1 of the deep tension of the natural voltage after a vibration grinding treatment, and Fig. 2 of the deep tension of the natural voltage for vibration grinding treatment after hard turning.
Det föreslagna förfarandet för tillverkning av en konstruktionsdel av metall för rullningslager syftar till ökning av konstruktionsdelens livslängd; konstruktionsdelen består av ett metalliskt material med intermediärt lösta atomer (t.ex. kol, kväve). Ökningen av livslängden uppnås genom en minskning av dislokationsrörligheten i det högbelastade kantskiktet vid samtidig stabilisering av ett sprickhämmande tryckegenspänningstillstånd.The proposed method of manufacturing a metal structural member for roller bearings aims to increase the service life of the structural member; the structural part consists of a metallic material with intermediate dissolved atoms (eg carbon, nitrogen). The increase in service life is achieved by a decrease in the dislocation mobility in the highly loaded edge layer while simultaneously stabilizing a crack-inhibiting compressive stress state.
Verkan ärjämförbar med den hos en behandling med varmkulblästring.The effect is comparable to that of a treatment with hot ball blasting.
Genom den enligt uppfinningen föreslagna varm-vibrationsslipningen vid temperaturer mellan 80°C och 400°C, typiskt mellan 80°C och 150°C, som sista bearbetningssteg (lämplig yttopografi, t.ex. för löpbanor till rullningslager motsvarande Ra z 0,1 um) i anslutning till värmebehandlingen (för stål, t.ex. martensitiska, bainitiska) och en förbearbetning, såsom exempelvis (höghastighets-)hårdsvarvning och/eller förslipning, uppnås för sprickutbredningen hämmande tryckegenspänningar med maximumvärden av flera 100 MPa och branta djupförlopp till i området från 10 um (se Fig. 1; överlagring med föregående arbetssteg möjligt, se Fig. 2) och det uppstår inom området för den (elastisk- plastiska) kantzonen till följd av bestående deformering en förkastningsrik och genom substrukturer stabiliserad struktur i det under drift för höga påkänningar utsatta skiktet nära ytan. Uppvärmningen enligt uppfinningen av den aktuella konstruktionsdelen under denna process till temperaturer på maximalt upp till anlöpningstemperaturen vid den förutnämnda värmebehandlingen, vilket kräver användande av ett lämpligt värme- beständigt medium och beaktande av kraven på måttstabilitet och hårdhet, stabiliseras tack vare den, med den energimässigt gynnsamma segregationen av de lösta mellangitteratomerna på dislokationskärnorna (Cottrell-molnen, jämför med dynamisk smidesåldring) förbundna minskningen av dislokationsrörlighet i ytlagret, till en mot utmattning beständig struktur. Samtidigt sker en önskad stabilisering av tryckegen- spänningstillståndet, i de genom vibrationsslipningen påverkade zonerna utan nämnvärd minskning, som skulle bli resultatet av en först efteråt följande uppvärmning. Det är vidare av betydelse, att genom diffusion av mellangitteratomerna vid dislokationskärnorna stabiliseras också dislokationstillståndet på större djup, vilket beror på en lämplig förbearbetning (t.ex. efter hårdsvarvning).By the hot vibration grinding proposed according to the invention at temperatures between 80 ° C and 400 ° C, typically between 80 ° C and 150 ° C, as the final processing step (suitable surface topography, eg for treadmills for rolling bearings corresponding to Ra z 0.1 um) in connection with the heat treatment (for steels, eg martensitic, bainitic) and a pre-processing, such as for example (high-speed) hard turning and / or grinding, achieving cracking inhibiting compressive stresses with maximum values of several 100 MPa and steep depths up to i the range from 10 μm (see Fig. 1; superimposition with previous working steps possible, see Fig. 2) and a fault-rich and structure-stabilized structure arises in the area of the (elastic-plastic) edge zone due to permanent deformation too high stresses exposed the layer near the surface. The heating according to the invention of the actual structural part during this process to temperatures of up to the tempering temperature at the aforementioned heat treatment, which requires the use of a suitable heat-resistant medium and consideration of the requirements of dimensional stability and hardness, is stabilized thanks to the energy-favorable the segregation of the dissolved intermediate lattice atoms on the dislocation cores (Cottrell clouds, compare with dynamic forging aging) linked the reduction of dislocation mobility in the surface layer, to a fatigue-resistant structure. At the same time, a desired stabilization of the compressive stress state takes place in the zones affected by the vibratory grinding without appreciable reduction, which would be the result of a subsequent heating only. It is further important that by diffusion of the intermediate lattice atoms at the dislocation cores, the dislocation state is also stabilized at greater depths, which is due to a suitable pre-processing (eg after hard turning).
Stabiliseringen av dislokationstillståndet ökar livslängden för konstruktionsdelen. Detta kan i motsats till konventionell vibrationsslipning vid rumstemperatur uppnås genom samtidig uppvärmning av den behandlade metalliska konstruktionsdelen (t.ex. en ring till ett rullningslager) via diffusions- och segregationsprocesser för för lösta mellangitteratomer på dislokationskärnorna, varvid dessutom också det därvid uppbyggda tryckspännings- tillståndet stabiliseras utan nämnvärd minskning. Vibrationsslipningen utgör en nära nog icke spånbrytande ytbearbetning. ln coon oo ann oo 10 15 20 25 30 .nano -ua -4 4 Medan den kända vibrationsslipningen av metalliska konstruktionsdelar vid rumstemperatur inte möjliggör någon Stabilisering av den föreliggande dislokationsstrukturen och ingen Stabilisering av det införda tryckspänningstillståndet, uppnås detta enligt uppfinningen: Genom uppvärmning av konstruktionsdelen under vibrationsslipningen (varaktighet typiskt inom området 30 till 45 minuter) stabiliseras vid lämpliga metalliska material den uppnådda omvandlingsstrukturen, till skillnad från motsvarande behandling vid rumstemperatur, genom termiskt aktiverade diffusions- och segregationsförlopp av mellangitteratomer på dislokationskärnorna. Speciellt blir i stålen det intermediärt lösta kolet rörligt i gittret och kan under bildande av så kallade Cottrell-moln diffundera på dislokationskärnorna (segregation, jämför dynamisk smidesåldring). Detta arrangerande av atomerna är energimässigt gynnsamt och motverkar därmed de under drift uppkommande dislokationsrörelserna. Därigenom ökas livslängden. Dessutom sker en Stabilisering av tryckegenspänningstillståndet, som induceras genom vibrationsslipningen i det under drift högbelastade ytskiktet.The stabilization of the dislocation condition increases the service life of the structural part. In contrast to conventional vibration grinding at room temperature, this can be achieved by simultaneously heating the treated metallic structural part (eg a ring to a rolling bearing) via diffusion and segregation processes for dissolved intermediate lattice atoms on the dislocation cores, in addition to the compressive stress state. stabilized without appreciable reduction. The vibration grinding constitutes a virtually non-chip breaking surface treatment. While the known vibration grinding of metallic structural members at room temperature does not allow any stabilization of the present dislocation structure and no stabilization of the introduced compressive stress state, this is achieved according to the invention: By heating the the structural part during the vibration grinding (duration typically in the range 30 to 45 minutes) stabilizes with suitable metallic materials the achieved conversion structure, in contrast to the corresponding treatment at room temperature, by thermally activated diffusion and segregation processes of intermediate lattice atoms on the dislocation nuclei. In steel in particular, the intermediate dissolved carbon becomes mobile in the lattice and can, during the formation of so-called Cottrell clouds, diffuse on the dislocation cores (segregation, compare dynamic forging aging). This arrangement of the atoms is energy-efficient and thus counteracts the dislocation movements occurring during operation. This increases the service life. In addition, a stabilization of the compressive stress state occurs, which is induced by the vibration grinding in the surface layer which is highly loaded during operation.
Lämpliga temperaturer ligger allt efter behandlingstid, använt material och genomförd värmebehandling inom området mellan 80°C och 400°C, t.ex. för konstruktionsdelar till rullningslager mellan 80°C och 150°C. uppfinningen har visat sig bra i synnerhet för behandling av metalliska konstruktionsdelar (t.ex. komponenter för rullningslager) av material med intermediärt lösta atomer (t.ex. kol, kväve) efter värmebehandlingen och förbearbetningen. Förbearbetningen måste därvid, på djupet under effektzonen för vibrationsslipningen (omkring 10 pm) säkerställa ett lämpligt egenspänningstillstånd, varvid genom de under varmvibrationsslipningen pågående diffusions- och segregationsförloppen hos de lösta mellangitteratomerna på dislokationskärnorna, likaså kan dislokationstillståndet stabiliseras på större avstånd från ytan (vid endast ringa, temperatur- och tidsberoende förluster av den maximala tryckegenspänningen, typiskt omkring 10% till 20%.Suitable temperatures are in the range between 80 ° C and 400 ° C, e.g. for structural parts for roller bearings between 80 ° C and 150 ° C. the invention has proved to be particularly good for the treatment of metallic structural parts (eg rolling bearing components) of materials with intermediate dissolved atoms (eg carbon, nitrogen) after the heat treatment and pre-processing. The preprocessing must then, at the depth below the power zone for the vibration grinding (about 10 μm) ensure a suitable natural voltage condition, whereby through the diffusion and segregation processes taking place during the hot vibration grinding of the dissolved intermediate grid atoms on the dislocation cores, the dislocation condition can also be stabilized. , temperature and time dependent losses of the maximum compressive stress, typically about 10% to 20%.
Claims (17)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10216492A DE10216492B4 (en) | 2002-04-13 | 2002-04-13 | Method for producing a roller bearing component made of metal |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE0301068D0 SE0301068D0 (en) | 2003-04-10 |
| SE0301068L SE0301068L (en) | 2003-10-14 |
| SE523984C2 true SE523984C2 (en) | 2004-06-08 |
Family
ID=7714356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0301068A SE523984C2 (en) | 2002-04-13 | 2003-04-10 | Process for making a metal structural part for a rolling bearing |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10216492B4 (en) |
| SE (1) | SE523984C2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004053000B3 (en) * | 2004-11-03 | 2006-07-06 | Ab Skf | Component for a synchronization device and method for its production |
| DE102005035837B4 (en) * | 2005-07-30 | 2013-04-11 | Ab Skf | roller bearing |
| DE102006055027A1 (en) | 2006-11-22 | 2008-05-29 | Schaeffler Kg | Radial rolling bearings, in particular for the storage of shafts in wind power transmissions |
| DE102007055575B4 (en) * | 2007-11-20 | 2016-06-09 | Ab Skf | Raceway element of a roller bearing |
| DE102009024681B4 (en) * | 2009-06-12 | 2011-04-28 | Aktiebolaget Skf | roller bearing |
| DE102010038938B4 (en) * | 2010-08-05 | 2012-02-16 | Aktiebolaget Skf | Method for producing a bearing ring or a rolling element of a roller bearing |
| WO2014009236A1 (en) | 2012-07-12 | 2014-01-16 | Aktiebolaget Skf | Method for producing a rolling bearing component |
| GB2521220A (en) * | 2013-12-16 | 2015-06-17 | Skf Ab | Process for treating steel components |
| DE102015201644B4 (en) * | 2015-01-30 | 2017-06-22 | Jürgen Gegner | Method for deep rolling a metallic object, in particular a raceway of a roller bearing |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3815111C1 (en) * | 1988-05-04 | 1989-02-23 | Carl Kurt Walther Gmbh & Co Kg, 5600 Wuppertal, De | Treatment agent for vibratory grinding, and vibratory grinding process using this treatment agent |
| DE3829220A1 (en) * | 1988-05-04 | 1989-11-16 | Walther Carl Kurt Gmbh | Treatment composition for finishing grinding, and finishing grinding process and abrasive for carrying out the process |
| DE3910959C2 (en) * | 1989-04-05 | 1997-04-03 | Skf Gmbh | Process for the production of roller bearing elements from hardening roller bearing steel |
| US5603576A (en) * | 1993-03-08 | 1997-02-18 | Nsk, Ltd. | Method for manufacturing balls for bearing and products thereby |
| DE19513668A1 (en) * | 1995-04-11 | 1996-10-17 | Schaeffler Waelzlager Kg | Needle roller bearing and method for its prodn. |
| JP2001074053A (en) * | 1999-04-01 | 2001-03-23 | Nsk Ltd | Rolling bearing |
| NL1011807C2 (en) * | 1999-04-15 | 2001-02-05 | Skf Engineering & Res Services | Machine steel and part of a rolling bearing. |
| JP4022607B2 (en) * | 1999-07-21 | 2007-12-19 | 日産自動車株式会社 | Manufacturing method of high surface pressure resistant member |
-
2002
- 2002-04-13 DE DE10216492A patent/DE10216492B4/en not_active Expired - Fee Related
-
2003
- 2003-04-10 SE SE0301068A patent/SE523984C2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE0301068D0 (en) | 2003-04-10 |
| SE0301068L (en) | 2003-10-14 |
| DE10216492A1 (en) | 2003-10-23 |
| DE10216492B4 (en) | 2005-07-21 |
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