EP3899065A1 - Bohrstrangkomponente mit hoher korrosionsbeständigkeit und verfahren zu ihrer herstellung - Google Patents
Bohrstrangkomponente mit hoher korrosionsbeständigkeit und verfahren zu ihrer herstellungInfo
- Publication number
- EP3899065A1 EP3899065A1 EP19835388.0A EP19835388A EP3899065A1 EP 3899065 A1 EP3899065 A1 EP 3899065A1 EP 19835388 A EP19835388 A EP 19835388A EP 3899065 A1 EP3899065 A1 EP 3899065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bohrstrangkom
- detection limit
- alloy
- component according
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/44—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for equipment for lining mine shafts, e.g. segments, rings or props
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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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- C21D6/007—Heat treatment of ferrous alloys containing Co
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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
- C21D6/008—Heat treatment of ferrous alloys containing Si
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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
- 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
- C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
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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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Definitions
- the invention relates to a Bohrstrangkom component, in particular for use in media with a high corrosive attack and a method for their production.
- Such parts are in particular the so-called drill collars or MWD (measurement while drilling) and LWD (logging while drilling) parts, which are arranged above the actual drill head and serve, among other things, to accommodate the corresponding measuring electronics.
- MWD measurement while drilling
- LWD logging while drilling
- drill string components are not only made from the corresponding alloys, but that appropriate post-treatments ensure that there is a homogeneous, high-strength and, in particular, high-impact structure, in which, for example, intermetallic phases, coarse carbides or the like , no crack exit is brought about.
- drill string components in order to be particularly suitable for deep hole drilling, are selected so that the minimum values of the mechanical properties, in particular the 0.2% proof stress and tensile strength, are able to withstand the dynamically changing loads that occur.
- Such a drill string component is known, for example, from AT 412 727 B.
- the corrosion-resistant austenitic steel alloy chosen here is an alloy that in particular comprises high manganese, chromium and molybdenum and nickel contents.
- nitrogen is present in a content of 0.35% by weight to 1.05% by weight, nitrogen also supposed to contribute to corrosion resistance and being a strong austenite former.
- nitrogen-containing precipitates in particular chromium nitride, increases with increasing nitrogen content.
- manganese in particular in amounts of more than 19-30% by weight is provided. This is to ensure that non-porous materials can also be produced when solidifying under atmospheric pressure. Incidentally, the manganese is said to be stabilize the austenite structure against the formation of forming martensite at high degrees of deformation.
- EP 1 069 202 A1 discloses a paramagnetic, corrosion-resistant, austenitic steel with a high yield strength, strength and toughness, which is said to be corrosion-resistant in particular in media with a high chloride concentration, this steel being 0.6% by mass to 1.4% .-% nitrogen should contain, with 17 to 24 M .-% chromium and manganese are included.
- WO 02/02837 Al discloses a corrosion-resistant material for use in media with a high chloride concentration in oil field technology. This is a chromium nickel molybdenum super austenite, which is formed with comparatively low nitrogen contents, but with very high chromium and very high nickel contents.
- chrome manganese nitrogen steels are a rather inexpensive alloy composition, which nevertheless offers an excellent combination of strength, toughness and corrosion resistance.
- the chromium nickel molybdenum steels mentioned achieve significantly higher corrosion resistance than chromium manganese nitrogen steels, but are associated with considerably higher costs due to the very high nickel content.
- Superaustenites usually have a molybdenum content> 4% in order to achieve the high corrosion resistance.
- molybdenum increases the tendency to segregation and thus an increased susceptibility to excretions, especially sigma or chi phases. The consequence of this is that these alloys require a homogenization annealing or, if the values are above 4% molybdenum, remelting is necessary to reduce segregation.
- MARC Cr + 3.3 Mo + 20 N + 20 C - 0.25 Ni - 0.5 Mn.
- Classic chrome bar steels are the chrome manganese nitrogen steels that have already been mentioned because they are still relatively cheap with excellent properties. They are used here without niobium, manganese sulfides being formed due to the higher manganese content, which has a negative effect on the corrosion properties.
- Comparable steel grades are also known for use as shipbuilding steels for submarines, which are chromium-nickel manganese nitrogen steels alloyed with that of niobium to stabilize the carbon, but this worsens the impact strength. These steels are generally low in manganese and have a relatively good corrosion resistance here, but they do not achieve the strength of very high quality rods and, above all, not their toughness.
- the object of the invention is to provide a drill string component, in particular for use in oil field technology, in particular a drill collar which shows high corrosion resistance, high strength and good paramagnetic behavior.
- the drill string component should have a completely austenitic structure, in particular without deformation martensite, even after cold working, the magnetic permeability p r ⁇ 1.01 preferably p r ⁇ 1.005. Since ferrite or deformation martensite exhibit a magnetic behavior, they therefore increase the permeability and should therefore be avoided according to the invention.
- the yield strength is R p o, 2 > 450 MPa and can easily reach values> 500 MPa, whereby the impact energy at 20 ° C is greater than 350 J and also reaches values up to 440 J become.
- the yield strength is safely at R po , 2 > 1000 MPa and in practice values of up to 1100 MPa are achieved, whereby strain hardening work at 20 ° C is safely greater than 80J, with values of 200 J being reached in practice become.
- the impact energy was determined according to DIN EN ISO 148-1.
- values for the product of tensile strength Rm with impact strength KV of more than 100000 MPa J, preferably> 200000 MPa J, particularly preferably> 300000 MPa J, can be achieved.
- the alloy according to the invention comprises the following elements (all figures in% by weight):
- Phosphorus (P) ⁇ 0.05 ⁇ 0.05 ⁇ 0.05
- Tungsten (W) ⁇ 0.5 ⁇ 0.1
- copper (Cu) ⁇ 0.5 ⁇ 0.15 ⁇ 0.1
- Co Co
- Ti titanium
- AI detection limit aluminum
- Niobium (Nb) ⁇ 0.1 ⁇ 0.025 below detection limit
- the rest consists of 100% iron (as noted in the table) and inevitable impurities.
- the first column (far left) shows the composition with which it is basically possible to implement a collar according to the invention with the respective positive properties.
- Preferred variants are shown in the following columns, although not all alloying elements necessarily have to be present in a restricted manner; combinations of, for example, 5.2% Mn with 23.1% chromium are also conceivable.
- Carbon can be contained in a steel alloy according to the invention in contents of up to 0.25%. Carbon is an austenite former and has a positive effect on high mechanical properties. With a view to avoiding carbide precipitates, the carbon content can be set between 0.01 and 0.1% by weight.
- Silicon is provided in a content of up to 0.5% by weight and mainly serves to deoxidize the steel.
- the specified upper limit certainly avoids the formation of intermetallic phases. Since silicon is also a ferrite former, the upper limit with a safety range has also been selected in this regard. In particular, silicon can be provided in a content of 0.1-0.3% by weight.
- Manganese is contained in amounts of 3 - 8% by weight. This is an extremely low value compared to prior art materials. So far, it has been assumed that manganese contents of more than 19% by weight, if possible more than 20% by weight, are necessary for high nitrogen solubility. Surprisingly, it has been found in the present alloy that even with the low manganese contents according to the invention, a nitrogen solubility is achieved which is above what is possible according to the prevailing technical opinion. However, it has been found according to the invention that this is apparently not necessary due to the unexplained synergistic effects in the present alloy.
- the lower limit for manganese can be selected at 3.0 or 3.5 or 4.0 or 4.5 or 5.0%.
- the upper limit for manganese can be selected at 6.0 or 6.5 or 7.0 or 7.5 or 8.0%.
- the upper limit for copper can be selected at ⁇ 0.5% by weight or ⁇ 0.15% by weight or ⁇ 0.10% by weight or below the detection limit (i.e. without any deliberate addition).
- the alloying of copper has been found to be advantageous for the resistance in sulfuric acid according to the literature, it was found that copper> 0.5% increases the tendency to precipitate chromium nitrides, which has a negative effect on the corrosion properties. According to the invention, the upper limit is therefore set at 0.5%.
- Chromium has a content of 17% by weight or more than is necessary for a higher corrosion resistance. According to the invention, at least 23% and at most 30% are chromium contain. It has previously been assumed that contents higher than 24% by weight have a disadvantageous effect on the magnetic permeability because chromium is one of the ferrite-stabilizing elements. In contrast, it was found in the alloy according to the invention that even very high chromium contents above 23% did not negatively influence the magnetic permeability in the present alloy, but, as is known, the resistance to pitting and stress corrosion cracking was optimally influenced.
- the lower limit for chrome can be selected at 23 or 24 or 25 or 26%.
- the upper limit for chromium can be selected at 28 or 29 or 30%.
- Molybdenum is an element that contributes significantly to corrosion resistance in general and pitting corrosion resistance in particular, the effect of Mo lybdän is enhanced by nickel. According to the invention, 2 to 4% by weight of molybdenum are added.
- the lower limit for molybdenum can be selected at 2.0 or 2.1 or 2.2 or 2.3 or 2.4 or 2.5.
- the upper limit for molybdenum can be chosen as 3.5 or 3.6 or 3.7 or 3.8 or 3.9 or 4.0%. Higher levels of molybdenum make ESU treatment imperative to prevent segregation. Remelting processes are very complex and expensive. Therefore, according to the invention, DESU or ESU routes should be avoided.
- tungsten is present in contents below 0.5% and contributes to increasing the corrosion resistance.
- the upper limit for tungsten can be selected at 0.5 or 0.4 or 0.3 or 0.2 or 0.1% or below the detection limit (i.e. without any deliberate allowance).
- nickel is present in contents of 10 to 16%, as a result of which a high stress corrosion cracking resistance is achieved in media containing chloride.
- the lower limit for nickel can be selected at 10 or 11 or 12 or 13%.
- the upper limit for nickel can be selected at 15 or 15.5 or 16%.
- Contents of up to 5% by weight of cobalt can be provided in particular for the substitution of nickel.
- the upper limit for cobalt can be chosen at 5 or 3 or 1 or 0.5 or 0.4 or 0.3 or 0.2 or 0.1% or below the detection limit (ie without any deliberate addition).
- Nitrogen is contained in amounts of 0.50 to 0.90% by weight in order to ensure high strength. Nitrogen also contributes to corrosion resistance and is a strong tenite former, which is why higher contents than 0.52% by weight, in particular higher than 0.54% by weight, are favorable.
- the upper limit of nitrogen is limited to 0.90% by weight, whereby it has been shown that, in contrast to known alloys, despite the very low manganese content, this high nitrogen content in the alloy without any pressure embroidery (DESU) can be achieved.
- any pressure increase within a DESU route is even forbidden. Due to the low molybdenum content according to the invention and compensated for by chromium and nitrogen, this is also not necessary. It is particularly advantageous if the nitrogen to carbon ratio is greater than 15.
- the lower limit for nitrogen can be selected at 0.50 or 0.52 or 0.54 or 0.60 or 0.65%.
- the upper limit for nitrogen can be selected at 0.80 or 0.85 or 0.90%.
- Boron, aluminum and sulfur can also be included as further alloy components, but only optionally.
- the alloy components vanadium and titanium are not necessarily contained in the present steel alloy. Although these elements contribute positively to the solubility of nitrogen, the high nitrogen solubility according to the invention can also be offered in their absence.
- Niobium should not be contained in the alloy according to the invention, since it can lead to precipitates which reduce the toughness. Historically, niobium was only used to bind carbon, which is not necessary with the alloy according to the invention. The Levels of niobium are still tolerable up to 0.1%, but should not exceed the level of inevitable impurities.
- Figure 1 a table showing the components of the alloy according to the invention
- Figure 3 a table with three different alloys within the inventive concept and the resulting actual values of the nitrogen content against the arithmetic nitrogen solubility of such an alloy according to the current teaching.
- FIG. 4 mechanical properties of the three alloys from FIG. 3 produced by a setting method according to the invention with work hardening
- ESR Electro-slag remelting
- DESU pressure-electroslag remelting
- An advantage of the alloy according to the invention is that a flomogenization annealing or remelting is not necessary.
- FIG. 2 shows an example of the possible process routes for the production of the alloy composition according to the invention.
- a possible route is now described as an example.
- VID vacuum induction melting unit
- melted material is melted and treated by secondary metallurgy at the same time.
- the melt is then poured into ingot molds and solidifies there into blocks.
- These are then hot formed in several steps. For example, pre-forged on the P52 forging press and brought to the final dimension on the long forging machine (Rotary Forging Machine).
- a solution annealing step and / or water cooling can also be carried out.
- the cold forming is carried out on a long forging machine and the parts manufactured in this way are then processed.
- the product according to the invention shows that e.g. Chromium nitride precipitates occur to a significantly lesser extent, the corrosion properties are thereby optimally influenced.
- the necessary cold forming steps are then carried out, during which work hardening takes place.
- the degree of deformation here is between 10 and 50%.
- the MARC formula has been optimized to the effect that it has been found that the usual nickel removal for the system according to the invention does not apply and that the limit value of 40 is necessary.
- a superaustenitic material according to the invention can not only be produced via the described (and in particular shown in FIG. 2) production routes, the advantageous properties of the alloy according to the invention can also be achieved by a powder metallurgical production route.
- FIG. 3 shows three different variants within the alloy compositions according to the invention, with the nitrogen values measured in each case which have resulted in the procedure according to the invention in connection with the alloys according to the invention.
- These very high levels of nitrogen contradict the nitrogen solubility according to Stein, Satir, Kowandar and Medovar given in the right-hand columns from “On restricting aspects in the production of non-magnetic Cr-Mn-N-alloy steels, Sailer, 2005. "Different temperatures are given at Medovar. However, it can be seen that the high nitrogen values far exceed the theoretically expected.
- the three alloys from FIG. 3 are produced by a process according to the invention and subjected to strain hardening.
- R p o, 2 was around 1000 MPa for all three materials and the tensile strength Rm was between 1100 MPa and 1250 MPa.
- the notched bar impact work was an excellent 270 J to even over 300 J (alloy C - 329.5 J).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Heat Treatment Of Steel (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018133251.3A DE102018133251A1 (de) | 2018-12-20 | 2018-12-20 | Bohrstrangkomponente mit hoher Korrosionsbeständigkeit und Verfahren zu ihrer Herstellung |
| PCT/EP2019/086381 WO2020127786A1 (de) | 2018-12-20 | 2019-12-19 | Bohrstrangkomponente mit hoher korrosionsbeständigkeit und verfahren zu ihrer herstellung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3899065A1 true EP3899065A1 (de) | 2021-10-27 |
| EP3899065C0 EP3899065C0 (de) | 2024-12-04 |
| EP3899065B1 EP3899065B1 (de) | 2024-12-04 |
Family
ID=69157791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19835388.0A Active EP3899065B1 (de) | 2018-12-20 | 2019-12-19 | Bohrstrangkomponente mit hoher korrosionsbeständigkeit und verfahren zu ihrer herstellung |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US12365960B2 (de) |
| EP (1) | EP3899065B1 (de) |
| CN (1) | CN113195749A (de) |
| CA (1) | CA3118803A1 (de) |
| DE (1) | DE102018133251A1 (de) |
| ES (1) | ES2999343T3 (de) |
| PL (1) | PL3899065T3 (de) |
| WO (1) | WO2020127786A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4752255A1 (de) | 2024-11-29 | 2026-06-03 | voestalpine BÖHLER Edelstahl GmbH & Co KG | Eisen-nickel-legierung, verfahren zu deren herstellung, dadurch erhältliches strangförmiges produkt sowie verwendung des strangförmigen produkts zur herstellung eines trägerseils für hochtemperaturleitungen |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018133255A1 (de) | 2018-12-20 | 2020-06-25 | Voestalpine Böhler Edelstahl Gmbh & Co Kg | Superaustenitischer Werkstoff |
| WO2023105266A1 (en) | 2021-12-07 | 2023-06-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Ue-assisted precoder selection in active antenna system (aas) |
| US11885183B2 (en) * | 2022-04-12 | 2024-01-30 | Joe Fox | Downhole inductive coupler with ingot |
| JP7845035B2 (ja) * | 2022-05-10 | 2026-04-14 | 大同特殊鋼株式会社 | 非磁性オーステナイト系ステンレス鋼材及びその製造方法 |
| US20240183014A1 (en) | 2022-12-03 | 2024-06-06 | Arthur Craig Reardon | High Speed Steel Composition |
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- 2019-12-19 CN CN201980084423.7A patent/CN113195749A/zh active Pending
- 2019-12-19 EP EP19835388.0A patent/EP3899065B1/de active Active
- 2019-12-19 WO PCT/EP2019/086381 patent/WO2020127786A1/de not_active Ceased
- 2019-12-19 CA CA3118803A patent/CA3118803A1/en active Pending
- 2019-12-19 ES ES19835388T patent/ES2999343T3/es active Active
- 2019-12-19 PL PL19835388.0T patent/PL3899065T3/pl unknown
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2025
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4752255A1 (de) | 2024-11-29 | 2026-06-03 | voestalpine BÖHLER Edelstahl GmbH & Co KG | Eisen-nickel-legierung, verfahren zu deren herstellung, dadurch erhältliches strangförmiges produkt sowie verwendung des strangförmigen produkts zur herstellung eines trägerseils für hochtemperaturleitungen |
| WO2026115111A1 (de) | 2024-11-29 | 2026-06-04 | Voestalpine Böhler Edelstahl Gmbh & Co Kg | Eisen-nickel-legierung, verfahren zu deren herstellung, dadurch erhältliches strangförmiges produkt sowie verwendung des strangförmigen produkts zur herstellung eines trägerseils für hochtemperaturleitungen |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220033924A1 (en) | 2022-02-03 |
| WO2020127786A1 (de) | 2020-06-25 |
| EP3899065C0 (de) | 2024-12-04 |
| DE102018133251A1 (de) | 2020-06-25 |
| US20260117335A1 (en) | 2026-04-30 |
| CN113195749A (zh) | 2021-07-30 |
| PL3899065T3 (pl) | 2025-06-09 |
| ES2999343T3 (en) | 2025-02-25 |
| CA3118803A1 (en) | 2020-06-25 |
| US12365960B2 (en) | 2025-07-22 |
| EP3899065B1 (de) | 2024-12-04 |
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