DK146829B - PROCEDURE FOR THE MANUFACTURE OF ARMED PLATE VALVES - Google Patents
PROCEDURE FOR THE MANUFACTURE OF ARMED PLATE VALVES Download PDFInfo
- Publication number
- DK146829B DK146829B DK544080AA DK544080A DK146829B DK 146829 B DK146829 B DK 146829B DK 544080A A DK544080A A DK 544080AA DK 544080 A DK544080 A DK 544080A DK 146829 B DK146829 B DK 146829B
- Authority
- DK
- Denmark
- Prior art keywords
- valve
- procedure
- manufacture
- plate valves
- valves
- Prior art date
Links
Classifications
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Articles (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Description
146829 i146829 i
Opfindelsen angår en fremgangsmåde til fremstilling af ventiler til forbrændingsmaskiner med en pansring på ventilmaterialet inden for ventilsædeområdet.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method of manufacturing valves for internal combustion machines with an armor ring on the valve material within the valve seat area.
Der kendes ventiler af denne type med en påført pansring.Valves of this type are known with an applied armor ring.
For at kunne modstå store mekaniske belastninger og temperatursvingningsbelastninger, er disse ventiler inden for ventilsædeområdet belagt med materialer, hvis varmestyrke og hårdhed er højere end værdierne for selve ventilmaterialet.In order to withstand large mechanical loads and temperature fluctuation loads, these valves within the valve seat area are coated with materials whose thermal strength and hardness are higher than the values of the valve material itself.
Disse materialer er med hensyn til deres sammensætning i alt væsentligt anderledes opbygget end ventilmaterialerne og besidder ofte en anden adfærd med hensyn til udvidelse og krympning ved skiftende temperaturer.These materials, in terms of their composition, are substantially different from the valve materials and often have a different behavior in terms of expansion and shrinkage at changing temperatures.
For at undgå en revnedannelse er det ved disse ventiler ganske vist kendt at påvirke varmeudvideIsens virkninger i pansringslagene og i ventilmaterialet ved passende forop-vatmning under en svejseproces, men efter en sådan proces opstår der en egenspændingstilstand ved afkølingen på grund af de forskellige udvidelseskoefficienter.To avoid cracking, these valves are known to affect the effects of heat expansion in the armor layers and in the valve material by appropriate pre-heating during a welding process, but after such a process, an intrinsic stress state occurs upon cooling due to the various expansion coefficients.
Problemet ved denne form for ventilfremstilling består i, at de optrædende egenspændinger i hovedsagen er trækspændinger, som forekommer i pansringen, og som under kritiske belastningsperioder fører til revner, som igen kan føre til ødelæggelse af ventilen med heraf følgende betydelige følgeskader.The problem with this type of valve manufacturing is that the occurring intrinsic stresses in the main are tensile stresses which occur in the armor ring and which, during critical loading periods, lead to cracks, which in turn can lead to the destruction of the valve with consequent significant consequential damage.
Formålet med opfindelsen er at tilvejebringe en fremgangsmåde til fremstilling af ventiler, og som på enkel måde eliminerer de optrædende trækspændinger i pansringen og herved sikrer en reduktion af tilbøjeligheden til at danne revner.The object of the invention is to provide a method of producing valves which simply eliminates the occurring tensile stresses in the armor ring thereby ensuring a reduction of the tendency to form cracks.
Dette opnås ifølge opfindelsen ved, at tallerkenbundens ventilmateriale efter anbringelsen af pansringen opvarmes til 2 146329 over dets varmeflydningsgrænse, indtil en vis dybde inden for et omkring ventilens akse symmetrisk udformet delområde med undtagelse af et rundtgående randområde, og derpå underkastes en hurtig afkøling, og at det fra varmebehandlingen fritagne randområde har en radial dimension, som tillader en deformation af randområdet under indflydelse af de kræfter, der optræder ved krympningen af det varmebehandlede delområde, hvorved den udvendige ventildiameter reduceres.This is achieved according to the invention by heating the plate bottom valve material after the armor ring is heated to its heat flow limit to a certain depth within a symmetrically shaped sub-region of the valve except for a circumferential rim area, and then subjected to a rapid cooling. the edge area exempted from the heat treatment has a radial dimension which permits a deformation of the edge area under the influence of the forces acting on the shrinkage of the heat treated part area, thereby reducing the external valve diameter.
Ved hjælp af disse fremgangsmådetrin til gennemførelsen af krympeprocessen indtræder den fordel, at der inden for området af pansringen sker en ændring af den forekommende trækspænding til trykspænding.With the aid of these process steps for carrying out the shrinking process, the advantage arises that within the region of the armor ring, a change in the compressive tensile stress occurring occurs.
For at opvarmningen i alt væsentligt begrænses til det Ønskede delområde, kan hensigtsmæssigt delområdet for opvarmningen og afkølingen vare ringformet tildannet.In order that the heating is substantially limited to the desired sub-area, the sub-area for the heating and cooling may be suitably formed in an annular fashion.
På tegningen er der skematisk vist et partielt snit igennem en ventil med en pasxing, hvorved ventilens udformning efter brugen af fremgangsmåden er antydet med punkterede linier.In the drawing, a partial section through a valve with a pass ring is schematically shown, whereby the design of the valve after the use of the method is indicated by dashed lines.
Den viste ventil består af en ventilspindel 1 og en ventiltallerken 2. Ventiltallerkenen 2 er inden for ventilsædeområdet forsynet med en pansring 3, som optages i en tilsvarende fordybning 4.The valve shown consists of a valve spindle 1 and a valve plate 2. The valve plate 2 is provided within the valve seat area with an armor ring 3 which is accommodated in a corresponding recess 4.
Ved brug af fremgangsmåden opvarmes ventilmaterialet indtil en vis dybde inden for et delområde 6 udgående fra tallerkenbunden 5. Opvarmningen sker via en ikke nærmere vist induktionsspole. Delområdet 6 er i dette udførelseseksempel tildannet som en ring. Der må imidlertid i enhver udførelsesform stadigvæk forblive opretholdt et rundtgående randområde 7,Using the method, the valve material is heated to a certain depth within a subarea 6 starting from the plate bottom 5. The heating takes place via an induction coil not shown. In this embodiment, sub-region 6 is formed as a ring. However, in any embodiment, a circumferential peripheral area 7 must still be maintained,
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2951317 | 1979-12-20 | ||
| DE2951317A DE2951317C2 (en) | 1979-12-20 | 1979-12-20 | Process for the manufacture of poppet valves |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK544080A DK544080A (en) | 1981-06-21 |
| DK146829B true DK146829B (en) | 1984-01-16 |
| DK146829C DK146829C (en) | 1984-06-25 |
Family
ID=6089020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK544080A DK146829C (en) | 1979-12-20 | 1980-12-19 | PROCEDURE FOR THE MANUFACTURE OF ARMED PLATE VALVES |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5698513A (en) |
| CH (1) | CH651108A5 (en) |
| DE (1) | DE2951317C2 (en) |
| DK (1) | DK146829C (en) |
| FR (1) | FR2472079B1 (en) |
| NL (1) | NL191293C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3247487A1 (en) * | 1982-12-22 | 1984-06-28 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Poppet valve for internal combustion engines |
| EP4375383A1 (en) * | 2022-11-28 | 2024-05-29 | MAHLE International GmbH | Method for introducing compressive stress in at least one target region |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB538241A (en) * | 1939-04-08 | 1941-07-25 | Budd Induction Heating Inc | Improvements in or relating to the treatment of metal articles to change a dimensionthereof |
| FR1025682A (en) * | 1949-12-01 | 1953-04-17 | Teves Gmbh Alfred | Valve <shielded> with hard metal for internal combustion engines |
| US2801193A (en) * | 1954-05-14 | 1957-07-30 | Baldwin Lima Hamilton Corp | Method of treating impulse turbine buckets |
| DE1240333B (en) * | 1965-10-28 | 1967-05-11 | Volkswagenwerk Ag | Method of manufacturing an armored exhaust valve |
-
1979
- 1979-12-20 DE DE2951317A patent/DE2951317C2/en not_active Expired
-
1980
- 1980-11-26 NL NL8006433A patent/NL191293C/en not_active IP Right Cessation
- 1980-12-03 CH CH8923/80A patent/CH651108A5/en not_active IP Right Cessation
- 1980-12-09 JP JP17272480A patent/JPS5698513A/en active Granted
- 1980-12-16 FR FR8026662A patent/FR2472079B1/en not_active Expired
- 1980-12-19 DK DK544080A patent/DK146829C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5698513A (en) | 1981-08-08 |
| NL8006433A (en) | 1981-07-16 |
| FR2472079B1 (en) | 1987-05-07 |
| DE2951317C2 (en) | 1982-06-16 |
| JPS621083B2 (en) | 1987-01-12 |
| NL191293C (en) | 1995-05-01 |
| DE2951317A1 (en) | 1981-07-23 |
| DK146829C (en) | 1984-06-25 |
| NL191293B (en) | 1994-12-01 |
| DK544080A (en) | 1981-06-21 |
| FR2472079A1 (en) | 1981-06-26 |
| CH651108A5 (en) | 1985-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7988799B2 (en) | Welding repair method for full hoop structures | |
| CN106191759B (en) | Reduce the vacuum glow glow discharge nitriding technique of industrial robot precision gear deformation | |
| JP6842664B2 (en) | Cooling method of main roll for ring rolling and manufacturing method of ring rolled body | |
| US3649380A (en) | Method of manufacturing hard faced exhaust valves | |
| DK146829B (en) | PROCEDURE FOR THE MANUFACTURE OF ARMED PLATE VALVES | |
| CN103937944B (en) | A kind of vacuum annealing furnace | |
| US4222430A (en) | Method of armo-coating valve seats of internal combustion engines | |
| US3257865A (en) | Crankshafts | |
| US4879793A (en) | Method of manufacturing turbine wheel disks with locally high internal compressive strains in the hub bore | |
| US4633764A (en) | Aluminum base alloy piston for internal combustion engines with mechanically surface-condensed boss bores | |
| RU2633734C2 (en) | Piston ring with increased fatigue limit for internal combustion engine and method of piston ring manufacture | |
| CN111057832A (en) | Heat treatment deformation control method for spiral bevel gear | |
| JP2016079428A (en) | Support tool for heat treatment | |
| US2417610A (en) | Method of manufacturing piston rings | |
| JPS5852428A (en) | Heat treatment for improving stress of shaft | |
| JP3916058B2 (en) | Cylinder liner manufacturing method | |
| JP5096387B2 (en) | Induction hardening method | |
| US3552178A (en) | Method of prestressing parts subject to thermal shock | |
| CN203833975U (en) | Vacuum annealing furnace | |
| RU2232197C1 (en) | Method and apparatus for manufacture of high-strength steel thin-walled products of precise geometric sizes | |
| SU969495A1 (en) | Method for restoring worn inner cylindrical surface, preferably of steel and cast iron parts | |
| JP6624019B2 (en) | Construction method for irregular refractories | |
| Korecki-SECO et al. | Advanced Distortion Control for Heat Treated Components | |
| JPH04341515A (en) | Method for correcting strain caused by local quenching | |
| JPS62167823A (en) | Method and device for hardening crank shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |