EP0401726B1 - Verfahren zur Festigkeitssteigerung von Vergütungsstahl und Verwendung eines so behandelten Vergütungsstahles - Google Patents
Verfahren zur Festigkeitssteigerung von Vergütungsstahl und Verwendung eines so behandelten Vergütungsstahles Download PDFInfo
- Publication number
- EP0401726B1 EP0401726B1 EP90110560A EP90110560A EP0401726B1 EP 0401726 B1 EP0401726 B1 EP 0401726B1 EP 90110560 A EP90110560 A EP 90110560A EP 90110560 A EP90110560 A EP 90110560A EP 0401726 B1 EP0401726 B1 EP 0401726B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strength
- heat
- stress
- tempering
- steel
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 27
- 239000010959 steel Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 15
- 238000005496 tempering Methods 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010002 mechanical finishing Methods 0.000 claims 3
- 239000012080 ambient air Substances 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 229910019932 CrNiMo Inorganic materials 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001149 41xx steel Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- C21D9/16—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for explosive shells
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
Definitions
- the invention relates to a method according to the preamble of claim 1 and the use of a steel treated in this way according to claim 3.
- the invention is based on the object of specifying a heat treatment process for increasing its strength for a commercially available, standardized and inexpensive tempering steel in such a way that the durability of the high-strength special steels mentioned is achieved; so that an inexpensive raw material is available for the forged metal blank, which can be subjected to mechanical processing into an extremely dimensionally accurate and mechanically highly stressable submunition shell.
- the peculiarity of the heat treatment process according to the invention which brings about the surprising increase in strength of a tempering steel which is not offered at all for such stresses, is, according to the solution according to the invention, in that after staged preheating (with the holding time on the temperature levels is not critical if it is only ensured that the blank has reached the specified temperature through and through at every temperature level and after austenitizing and quenching, contrary to the usual tempering treatment of tempered steels at about 500 ° C (to break down martensite and To have iron carbide excreted), now only one as with tool steels, the usual stress relief is carried out at correspondingly lower temperatures in order to reduce tetragonal distortions of the martensite that occurred during the previous hardening.
- the treatment according to the invention increases the previously offered tensile strength of an inexpensive, commercially available tempering steel from the offered upper limit at 1450 N / mm2 to the order of magnitude of 1800 N / mm2 and more, i.e. in the order of strength of the expensive high-strength special steels such as X 41 CrMoV 51.
- the alloy components should lie within certain standardized lower and upper limits, as indicated in the table below.
- the strength is preferably tempered at a tempering temperature of around 220 ° C.
- a metal article produced according to the methods described above can advantageously be used for submunition casings of search fuse ammunition.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3918700A DE3918700A1 (de) | 1989-06-08 | 1989-06-08 | Verfahren zur festigkeitssteigerung von verguetungsstahl und verwendung eines so behandelten verguetungsstahles |
| DE3918700 | 1989-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0401726A1 EP0401726A1 (de) | 1990-12-12 |
| EP0401726B1 true EP0401726B1 (de) | 1993-09-08 |
Family
ID=6382342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90110560A Expired - Lifetime EP0401726B1 (de) | 1989-06-08 | 1990-06-05 | Verfahren zur Festigkeitssteigerung von Vergütungsstahl und Verwendung eines so behandelten Vergütungsstahles |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0401726B1 (cs) |
| DE (2) | DE3918700A1 (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846157A (zh) * | 2015-03-31 | 2015-08-19 | 常州天山重工机械有限公司 | 一种高精高速重载齿轮盐浴淬火的新型回火工艺 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2916371B1 (fr) * | 2007-05-24 | 2010-02-26 | Fwu Kuang Entpr Co Ltd | Procede de preparation de pieces forgees ayant une resistance a la traction et un allongement excellents a partir de fils mamchine en acier |
| DE102007038662A1 (de) | 2007-08-15 | 2009-02-19 | Rheinmetall Waffe Munition Gmbh | Fertigungsverfahren und Stahl für schwere Munitionshüllen |
| EP2229981A1 (en) | 2009-03-17 | 2010-09-22 | Paul Scherrer Institut | A method for evaluating radiation model data in particle beam radiation applications |
| CN112899595B (zh) * | 2021-01-08 | 2022-04-22 | 安徽品志合金新材料有限公司 | 一种黄铜合金铜棒加工用的预热设备 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875109A (en) * | 1954-08-25 | 1959-02-24 | Eimco Corp | Method for the isothermal treatment of alloys after casting |
| US4077812A (en) * | 1975-03-25 | 1978-03-07 | Ntn Toyo Bearing Co. Ltd. | Method of working steel machine parts including machining during quench cooling |
-
1989
- 1989-06-08 DE DE3918700A patent/DE3918700A1/de active Granted
-
1990
- 1990-06-05 EP EP90110560A patent/EP0401726B1/de not_active Expired - Lifetime
- 1990-06-05 DE DE90110560T patent/DE59002614D1/de not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846157A (zh) * | 2015-03-31 | 2015-08-19 | 常州天山重工机械有限公司 | 一种高精高速重载齿轮盐浴淬火的新型回火工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59002614D1 (de) | 1993-10-14 |
| EP0401726A1 (de) | 1990-12-12 |
| DE3918700C2 (cs) | 1991-03-21 |
| DE3918700A1 (de) | 1990-12-13 |
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