CN1434146A - Hardness raised inert reaction material for thermo-load construction member - Google Patents

Hardness raised inert reaction material for thermo-load construction member Download PDF

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Publication number
CN1434146A
CN1434146A CN02152748A CN02152748A CN1434146A CN 1434146 A CN1434146 A CN 1434146A CN 02152748 A CN02152748 A CN 02152748A CN 02152748 A CN02152748 A CN 02152748A CN 1434146 A CN1434146 A CN 1434146A
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deducts
alloy
until
weight
hardness
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G·梅耶博克
J·萨默
G·萨勒
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Voestalpine Boehler Edelstahl GmbH and Co KG
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Boehler Edelstahl GmbH and Co KG
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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
    • 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
    • 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
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Abstract

This invention relates to a material for thermally stressed members and tools, a process to produce this material and application of this material. This invention comprises a material with high reaction-inertness, particularly of high resistance to oxidation and high hardness at a temperature up to 750 DEG C, composed of a composition substantial by weight as follows: carbon (C) 0.01 to 0.25; silicon (Si) 0.35 to 2.5; magnesium (Mn) 0.4 to 4.3; chromium (Cr) 16.0 to 28.0; nickel (Ni) 15.0 to 36.0; nitrogen (N) 0.01 to 0.29, with the constraint, that the nickel content of the alloy equal to a value, or if necessary greater than the value by at most 4.8% by weight, which value is obtained from the chromium content plus 1.5 times of silicon content minus 0.12 times of manganese content minus 18 times of nitrogen content minus 30 times of carbon content minus the number 6: Ni >= Cr+1.5Si-0.12Mn-18*N-30*C-6. The remaining contents are iron (Fe) and accompanying elements and impurities, the material having hardness, formed by cold deformation, of at least 230HB.

Description

Be used for the thermal load member raising the material of reactionlessness of hardness
But the present invention relates to the high reactionlessness that has of the member that is used for heat-carrying and mould, a kind of material of the hardness that particularly high oxidation-resistance and having has improved.
According to Deutsche Industry Norm 50900 reaction of metallic substance and surrounding environment is defined as corrosion, this reaction makes the measurable change of material production.Corrosion can take place under member has or do not have the situation of mechanical load, and takes place after being subjected to dissimilar chemical erosions and under differing temps.
Usually by have ionic conductivity mutually in the presence of galvanic corrosion or body surface produced by the thermal etching under chemical corrosion and the temperature that improved corrode.Under the temperature that has improved even in the fused solution medium, for example in liquid glass, also will the change corrosive attack on surface of metal parts contacted with it.
In modern technologies, member or workpiece major part will stand various load simultaneously, in these load particularly heat and mechanical load also can work with replacing or expand.Corresponding therewith, many etching conditions of having strengthened are arranged, these conditions randomly strengthen by the deformation near the zone on surface of member.
Corrosion-resistant-and heat-stable steel and alloy, even because its thermal load under the temperature more than 600 ℃ also should have face centered cubic lattice arrangement of atoms or austenitic weave construction.This means on alloy technology, these materials have higher nickel-and/or cobalt contents or in order to reach the intensity that at high temperature improved and hardness and form Ni-based-or cobalt base alloy, yet must be at least greater than 13 weight % at this reason chromium content for resistance to chemical attack.
Though physical strength that has had the material of high nickel content all to have to improve or high material hardness, so at high temperature can improve the use properties of member and workpiece, but such hope is arranged for economic reasons, nickel content is reduced to below the 36 weight %, and chromium content is brought up to more than the 16 weight % for the erosion resistance that improves alloy.
Though have austenitic iron sill less than the nickel content of 36 weight % based on its high chromium concn, randomly may with other element chemical combination against corrosion, at high temperature, for example in the required shortest time, can hold out against corrosive attack fully under 600 ℃ or the higher temperature, yet this material have less hardness and similarly intensity and limited creep property.Although these shortcomings are arranged, for example according to the alloy of Deutsche Industry Norm No.1.2780 and 1.2782 and 1.2786 for the former of economic and preparation thereby in glass processing, be used as moulding stock.
In the present invention this is managed to solve, and determine following purpose, promptly prepare the material of being mentioned when beginning of having, even this material is being higher than the creep property that also has high creep resistance under 600 ℃ the temperature and improved and similar erosion resistance greater than the hardness of 230HB as this paper.
Another task of the present invention proposes a kind of material that is used for member and mould that is used for preparing economically, and this material has the use properties of having improved under high hardness and the corrosion resistance nature that improved.
The objective of the invention is ferrous alloy at last as being used for the application of the material of thermal treatment mould, this material can use being higher than under 550 ℃ the working temperature.
Above-mentioned purpose can be reached by the described at the first bruss material of this paper, and this material is made by the alloy of following composition the (weight %) basically,
C 0.01-0.25
Si 0.35-2.5
Mn 0.4-4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, the nickel content in the alloy equals or may be worth big 4.8 weight % at most than what follows, and this value deducts the carbon that 18 times nitrogen deducts 30 times in 0.12 times manganese and deducts 6 again for chromium content adds that 1.5 times silicone content subtracts, promptly
Ni≥Cr+1.5×Si-0.12×Mn-18×N-30×C-6
Surplus is Fe, and associated element and impurity, and this material has the hardness of the 230HB at least that forms by cold deformation.
Be the chemical corrosion resistance of selected alloy especially and the synergy of the performance by the accessible material of cold deformation under this chemical constitution by the advantage that the present invention reached.For cold deformation or the distortion under the temperature below the austenitic recrystallization temperature of the cubes center of area, the locking by the dislocation in the lattice makes material be enhanced.What make that one of skill in the art is surprised is, even the hardness that material according to the invention is relevant increases and the raising of intensity also can reach being higher than under 600 ℃ the use temperature, desired Recovery Process in the lattice that has twisted, as thermal activation cross slip and being recombine in the common timed interval of dislocation can not be observed.In other words, though thermotolerance that the material of being formed according to the present invention has improved by cold deformation and common expertise different be that member also can reach under high application of temperature because the high creep resistance of steel has improved its creep property.In the expansible thermal load, under the situation of the steel ingot mould of preparation use glass, its working-surface each has the intensive temperature fluctuation, so that in the part of material volume change is arranged as it just.Find, by hardness and thermotolerance according to the material that has improved of the present invention, material, for example the distortion of the partial or near surface of glass reinforced plastic ingot mould tool is carried out in its elastic range, so just worked the formation of avoiding fatigue crack, even this fatigue crack also will occur, thereby cause the damage of mould when little mouldable tool change.
For the improvement that guarantees material performance characteristic, importantly,, and do not have the distortion martensitic range even this material also will be in stable austenitic zone when cold deformation.According to the present invention this can pass through the limit of given nickel and chromium concn reach with the nickel concentration relevant with chromium, silicon, manganese, nitrogen and carbon given in advance that passes through to be defined.As showing, higher nickel content will damage creep property.In contrast, to reduce the stabilization of austenite and the thermotolerance of material suddenly for lower nickel concentration.Be regarded as for elemental carbon and nitrogen basic identical, this especially nitrogen improved the creep property of material.
When material has following one or more alloying element contents (weight %),
C=0.02-0.20 is preferably 0.04-0.15
Si=0.50-2.48 is preferably 1.22-2.36
Mn=0.62-4.05 is preferably 1.00-3.95
Cr=20.1-27.6 is preferably 23.9-26.5
Ni=16.1-27.3 is preferably 17.9-25.45
N=0.014-0.23 is preferably 0.018-0.20
Can improve use properties according to member of the present invention and mould.Can determine as known, in alloy, have the cobalt that is higher than 0.52 weight % can improve the hot strength of material according to the present invention at this.
Though molybdenum, vanadium, tungsten, titanium and niobium element at high temperature can improve the creep resistance of material, and copper, and aluminium is the age hardening element of using always, but the associated element of the steel according to the present invention in material has a highest safe level, because as has been found, its higher content will reduce the erosion resistance of material, particularly with heavy-gravity glass of short duration contact the time, owing to the surface irregularity that has formed on the mould has damaged glass transparency.Reason to this is also not fully aware of, however acceptor atom Na+, K+, Ca 2+, B 3+, Al 3+And Si 4+Be considered and be hard Lewis acid, provide the thermal etching load of mould according to every kind of glass form at this.
Impurity must damage the performance of material, so alloy according to the present invention has following concentration value (weight %) for associated element and/or impurity element
Mo is less than 1.0
V is until 0.5
W is until 0.5
Cu is until 0.5
Co is until 6.5
Ti is until 0.5
Al is until 1.5
Nb is until 0.5
O maximum 0.05
P maximum 0.03
S maximum 0.03
Task of the present invention is used for preparing high reactionlessness by a kind of, the method of the member of the hardness that particularly high scale resistance and having until the thermal load of 750 ℃ temperature the time has improved and the material of mould and solving, according to this method by the alloy that has following composition the (weight %) basically
C 0.01-0.25
Si 0.35-2.5
Mn 0.4-4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, the nickel content in the alloy equals or may be at most than the big 4.8 weight % of value given below, and this value adds that by chromium content 1.5 times silicon deducts the carbon that nitrogen that 0.12 times manganese deducts 18 times deducts 30 times and deducts 6 again, promptly
Ni≥Cr+1.5×Si-0.12×Mn-18×N-30×C-6，
Surplus is an iron, and associated element and impurity, refines into original prod, and then this original prod further is processed into the material that has greater than the hardness of 230HB by cold deformation.
Alloy according to the present invention can be brought up to elastic limit of materials a stress level by cold deformation, even this level also is inaccessible near the working face of member or mould when by the alternative thermal load volume change taking place.Correspondingly in the crystal boundary scope also not when temperature variation and the zone of viscous deformation forms the crack with regard to having avoided owing to the fatigue of material like this.So also just can further avoid since chemistry or thermal etching and to the erosion of crystal boundary, even so that for example for glass mold its working face when the high load and during mass production-or surface property keep for a long time.In contrast, traditional glass mold usually short duration of service inner tissue's structure the crystal boundary place abrasion of materials appears, the degree of abrasion of materials is in several microns the scope.Made like this glass will produce surface irregularity in the light wave scope, thereby produces reflection interference and opal glass effect.
When making by cold deformation and have greater than 250HB according to the method for invention, particularly during the material of the hardness of 300HB and Geng Gao, so its erosion resistance-and thermotolerance also can further improve, thereby suppressed the formation of fatigue crack effectively.
Has according to the present invention the original prod of forming when forming when one by thermal distortion, it will pass through sosoloid thermal treatment, perhaps under texturing temperature, carry out the cooling and the cold deformation that may be enhanced, so just can make weave construction uniform material especially with erosion resistance of having improved.
When the cold deformation of material is fully carried out with the longitudinal axis that is axially perpendicular to original prod, be particularly advantageous for further making axisymmetric mould such as plane mould with similar mould so.
For the performance of the product that has improved, alloy is made of one or more following alloying elements, and its content is (weight %):
C=0.02-0.20 is preferably 0.04-0.15
Si=0.50-2.48 is preferably 1.22-2.36
Mn=0.62-4.05 is preferably 1.00-3.95
Cr=20.1-27.6 is preferably 23.9-26.5
Ni=16.1-27.3 is preferably 17.9-25.45
N=0.014-0.23 is preferably 0.018-0.2
At last, another object of the present invention is higher than 550 ℃ working temperature by using a kind of ferrous alloy as being used to have, be preferably and be higher than 602 ℃, can reach until the material of 750 ℃ thermal treatment mould especially, this ferrous alloy has following alloying element (weight %):
C is until 0.25
Si is until 2.5
Mn is until 4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, the nickel content in the alloy equals or may be at most than the big 4.8 weight % of value given below, and this value adds that for chromium content 1.5 times silicon deducts the carbon that nitrogen that 0.12 times manganese deducts 18 times deducts 30 times and deducts 6 again, promptly
Ni 〉=Cr+1.5 * Si-0.12 * Mn-18 * N-30 * C-6 surplus is an iron, and associated element and impurity, and the cold deformation of this alloy by the original prod that forms thus is enhanced to hardness and is at least 230HB, is preferably the material greater than 250HB.
Above-mentioned ferrous alloy is used as glass industry moulding stock, particularly be used in the machine molded glass as moulding stock for quality product with to prepare economically be superior especially.
Appended comparison detected result can be illustrated more clearly in material according to the invention.
Fig. 1 shows the intensity relevant with the cold deformation degree of material according to the invention under 640 ℃.
Fig. 2 shows the change curve of hardness under room temperature behind 600 ℃ the long-term temperature loading.
Fig. 1 shows the intensity of material according to the invention relevant with the cold deformation degree under 604 ℃ detected temperatures.Sample material forges down at 1010 ℃, strengthens cooling under the distortion temperature, carries out sosoloid thermal treatment under 1060 ℃.A material carries out cold deformation with 21%, 35%, 47% and 55% degree of deformation, therefrom prepares the sample that detects then.Carrying out ionization meter under 604 ℃, is 0.2% extension limit and tensile strength also, keeps 20 minutes under this temperature at this sample.Be used for comparison, standard material is carried out sosoloid thermal treatment under 1060 ℃, at this, the sample that makes from this kind material also detects at 604 ℃.The intensity level that clearly shows among Fig. 1 along with the increase material of degree of deformation improves, this (not illustrating in the drawings) at the cold deformation degree greater than 6%, have significant improvement greater than 12% o'clock intensity especially.
Shown in Fig. 2 is to measure the creep strength 600 ℃ of following material according to the invention that obtains by the hardness that detects the sample under the cold state, and with Deutsche Industry Norm number be 1.2083 and 1.4028 material compared.
Has a composition (weight %) according to of the present invention: C=0.08, Si=1.7, Mn=1.15, P=0.01, S=0.002, Cr=24.8, Ni=19.8, N=0.02, Mo=0.26, V=0.09, W=0.11, Cu=0.12, Co=0.4, Ti=0.01, Al=0.02, Nb=0.001, the material melts of O=0.0029 is cast into the examination ingot, and its thermal change is formed sample material.Carry out sosoloid thermal treatment at 1060 ℃ of following sample materials, then at quenching-in water, then, the sample that is numbered H5 does not carry out deformation process, and the sample that is numbered H525 is at 600 ℃ of following long term annealings and carry out 35% cold deformation.1.2083 under 1020 ℃, in oil, harden,, and also anneal for a long time 630 ℃ of annealing down with No. 1.4028 comparative material.After 45,90,140 and 180 hours sample material is taken out from stove, cooling, test material hardness is put back to sample (temperature loading with conversion) in the stove then.Duplicate H5 has shown desired hardness performance, relative therewith have 35% cold deformation material according to the invention H525 have 315HB raising hardness and high creep property.Even 600 ℃ of creeps with material of reducing that also detect under the thermal loads in conversion down less than hardness.The increase hardness that martensitic in contrast Standard Steel can detect along with the annealing time of sample significantly decreases.

Claims (13)

1. one kind has high reactionlessness, but the member that is used for heat-carrying to 750 ℃ of particularly high oxidation-resistance and the hardness that improved and a kind of material of mould, and it is made of the alloy with following composition (weight %) basically,
C 0.01-0.25
Si 0.35-2.5
Mn 0.4-4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, the nickel content in the alloy is equal to or greater than value given below, and this value adds that for chromium content 1.5 times silicon deducts the carbon that nitrogen that 0.12 times manganese deducts 18 times deducts 30 times and deducts 6 again, promptly
Ni≥Cr+1.5×Si-0.12×Mn-18×N-30×C-6
Surplus is Fe, and associated element and impurity, and this material has the hardness of the 230HB at least that forms by cold deformation.
2. according to the material of claim 1, have, particularly 300HB or higher hardness greater than 250HB.
3. according to the material of claim 1 or 2, the maximum beguines of nickel content of its interalloy are according to the big 4.8 weight % of the relation with contents value that is proposed in the claim 1.
4. according to the material of one of claim 1-3, it has following content (weight %) for one or more alloying elements
C=0.02-0.20 is preferably 0.04-0.15
Si=0.50-2.48 is preferably 1.22-2.36
Mn=0.62-4.05 is preferably 1.00-3.95
Cr=20.1-27.6 is preferably 23.9-26.5
Ni=16.1-27.3 is preferably 17.9-25.45
N=0.014-0.23 is preferably 0.018-0.20
5. according to the material of one of claim 1-4, it has following concentration value (weight %) for one or more associated elements and/or impurity element
Mo is less than 1.0
V is until 0.5
W is until 0.5
Cu is until 0.5
Co is until 6.5
Ti is until 0.5
Al is until 1.5
Nb is until 0.5
O maximum 0.05
P maximum 0.03
S maximum 0.03
6. one kind is used for preparing and has high reactionlessness, the method of the material that is used for member and mould of the hardness that particularly high oxidation-resistance and having when heat-carrying to 750 ℃ has improved, make original prod according to this method by the alloy that has following composition the (weight %) basically
C 0.01-0.25
Si 0.35-2.5
Mn 0.4-4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, the nickel content in the alloy is equal to or greater than value given below, and this value adds that for chromium content 1.5 times silicon deducts the carbon that nitrogen that 0.12 times manganese deducts 18 times deducts 30 times and deducts 6 again, promptly
Ni≥Cr+1.5×Si-0.12×Mn-18×N-30×C-6
Surplus is Fe, and associated element and impurity, and then this original prod further is processed into the material that has greater than the hardness of 230HB by cold deformation.
7. according to the method for claim 6, wherein original prod makes by thermal distortion, and this original prod carries out sosoloid thermal treatment or carries out cooling of possibility enhanced and cold deformation from texturing temperature.
8. according to the method for claim 6 or 7, cold deformation is to be axially perpendicular to the longitudinal axis of original prod to carry out fully.
9. according to the method for one of claim 6-8, the nickel content in the alloy is adjusted to maximum ratios corresponding to according to the big 4.8 weight % of the relation with contents value that is proposed in the claim 6.
10. according to the method for one of claim 6-9, alloy is to be made of following one or more alloying elements, and its content is (weight %)
C=0.02-0.20 is preferably 0.04-0.15
Si=0.50-2.48 is preferably 1.22-2.36
Mn=0.62-4.05 is preferably 1.00-3.95
Cr=20.1-27.6 is preferably 23.9-26.5
Ni=16.1-27.3 is preferably 17.9-25.45
N=0.014-0.23 is preferably 0.018-0.2
11., prepare by cold deformation and to have greater than 250HB particularly 300HB and the more material of high rigidity according to the method for one of claim 6-10.
12. the ferrous alloy with following alloying element (weight %) is higher than 555 ℃ as being used for working temperature, is preferably to be higher than 602 ℃, can make the purposes of the material of mould especially until 750 ℃ thermal technology, alloying element is as follows:
C is until 0.25
Si is until 2.5
Mn is until 4.3
Cr 16.0-28.0
Ni 15.0-36.0
N 0.01-0.29
Condition is, nickel content equals or may be at most than the big 4.8 weight % of value given below in the alloy, and this value adds that for chromium content 1.5 times silicon deducts the carbon that nitrogen that 0.12 times manganese deducts 18 times deducts 30 times and deducts 6 again, promptly
Ni≥Cr+1.5×Si-0.12×Mn-18×N-30×C-6
Surplus is Fe, and associated element and impurity,
The original prod that this alloy is prepared by cold deformation strengthens and becomes hardness and be at least 230HB, is preferably more than the material of 250HB.
13. according to the purposes of the ferrous alloy of claim 10, in glass industry, use, in particular as for being used for the moulding stock of machine molded glass as moulding stock.
CN02152748A 2002-01-23 2002-11-27 Hardness raised inert reaction material for thermo-load construction member Pending CN1434146A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA107/2002 2002-01-23
AT0010702A AT410550B (en) 2002-01-23 2002-01-23 Material used as a tool material in the glass industry, especially as a molding material for machine pressed glass consists of an alloy containing carbon, silicon, chromium, nickel and nitrogen

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CN1434146A true CN1434146A (en) 2003-08-06

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US (1) US20030136482A1 (en)
EP (1) EP1420077B1 (en)
KR (1) KR100540851B1 (en)
CN (1) CN1434146A (en)
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CN110520551A (en) * 2017-03-03 2019-11-29 博格华纳公司 The nickel and chromium base ferroalloy of high-temperature oxidation resistance with enhancing
CN110724873A (en) * 2018-07-17 2020-01-24 宝钢特钢有限公司 High-wear-resistance die forging die steel and manufacturing method thereof
CN112368100A (en) * 2018-07-02 2021-02-12 霍加纳斯股份有限公司 Wear resistant iron-based alloy composition comprising nickel
CN114207174A (en) * 2019-04-15 2022-03-18 原子能股份公司 Radiation-resistant austenitic steel for inner enclosure wall of water-water power reactor

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CN110520551A (en) * 2017-03-03 2019-11-29 博格华纳公司 The nickel and chromium base ferroalloy of high-temperature oxidation resistance with enhancing
CN110520551B (en) * 2017-03-03 2022-01-07 博格华纳公司 Nickel and chromium based ferrous alloys with enhanced high temperature oxidation resistance
CN112368100A (en) * 2018-07-02 2021-02-12 霍加纳斯股份有限公司 Wear resistant iron-based alloy composition comprising nickel
CN110724873A (en) * 2018-07-17 2020-01-24 宝钢特钢有限公司 High-wear-resistance die forging die steel and manufacturing method thereof
CN114207174A (en) * 2019-04-15 2022-03-18 原子能股份公司 Radiation-resistant austenitic steel for inner enclosure wall of water-water power reactor

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