CN115595516A - Heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment - Google Patents
Heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment Download PDFInfo
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- 238000005266 casting Methods 0.000 title claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 239000002245 particle Substances 0.000 claims description 60
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 238000005496 tempering Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000007670 refining Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052797 bismuth Inorganic materials 0.000 claims description 8
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 8
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical group [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 229910052723 transition metal Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 238000007550 Rockwell hardness test Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
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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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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Abstract
The invention discloses a heat-resistant and wear-resistant steel casting suitable for mechanical equipment for metallurgical electric power, belonging to the technical field of casting materials, and the steel casting comprises: nano BiGaTe: 10-30 parts; c: 1-15 parts; w: 1-5 parts; mn: 1-5 parts; cr: 10-20 parts; b: 0.1-1 part; ce: 1-5 parts; zr: 0-1 part; ti: 0-1 part; v: 0-1 part; nb: 1-6 parts; p:0.01 to 0.2 portion; s:0.01 to 0.2 portion; fe: 70-110 parts; according to the invention, the nano BiGaTe is prepared, and the high hardness of the nano BiGaTe is combined with the iron-based alloy, so that the good wear-resisting effect and mechanical property are realized; the nanometer BiGaTe has a stable structure, and realizes an anti-oxidation effect; the rare earth element Ce is added, the distribution of inclusions in the steel casting is changed, and the toughness, wear resistance and corrosion resistance are improved.
Description
Technical Field
The invention belongs to the technical field of casting materials, and particularly relates to a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment.
Background
With the rapid development of infrastructure construction and real estate industry in China, the steel industry and the manufacturing industry of special metallurgical equipment are also developed vigorously, china becomes the largest steel producing country in the world and is also the largest metallurgical professional equipment market, and the market scale accounts for more than one third of the world metallurgical professional equipment market.
For mechanical equipment suitable for metallurgical electric power to generally operate instruments at high temperature, higher requirements are provided for metal materials for preparing equipment parts in the past, and the requirements of use working conditions are required to be met under the condition of serious sliding wear, so that the research and the application of heat-resistant and wear-resistant steel castings are of great significance, and the existing steel castings and the preparation method thereof have the following defects:
a: the metallurgical industry in China starts late, and the preparation of steel castings is different from the international advanced level, so that the preparation process of the steel castings needs to be improved urgently;
b: the currently prepared steel casting has the problems of low hardness and unsatisfactory wear-resisting effect, mechanical property and oxidation-resisting effect, so that the application of the steel casting is limited to a certain extent, and the performance of the steel casting needs to be improved;
c: the following problems are mainly associated with the properties of steel castings: low hardness, no high temperature resistance and poor mechanical property;
d: although the improvement of the prior art on the steel casting can improve the hardness and achieve a certain wear-resistant effect, the mechanical property and the high temperature point are reduced, so that the high hardness, the mechanical property improvement and the high temperature resistance cannot be realized.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides a heat-resistant and wear-resistant steel casting suitable for mechanical equipment for metallurgical electric power, and aims to solve the problems of low hardness, no high temperature resistance and poor mechanical property of the existing steel casting; meanwhile, rare earth element Ce is added, so that the distribution of inclusions in the steel casting is changed, and the toughness, wear resistance and corrosion resistance are improved; the transition metal elements Zr, ti, V and Nb are added, and the high-temperature resistance of the transition metal is realized, so that the steel casting can resist high temperature and improve the hardness; in addition, the preparation system of the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power is mature, the treatment method is simple, and large-scale production can be realized.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe: 10-30 parts;
c: 1-15 parts;
w: 1-5 parts;
mn: 1-5 parts;
cr: 10-20 parts;
b: 0.1-1 part;
ce: 1-5 parts;
zr: 0-1 part;
ti: 0-1 part;
v: 0-1 part;
nb: 1-6 parts;
p:0.01 to 0.2 portion;
s:0.01 to 0.2 portion;
fe:70 to 110 portions.
Preferably, the steel casting comprises the following raw materials in parts by weight:
nano BiGaTe: 15-25 parts;
c: 5-10 parts;
w: 2-4 parts;
mn: 3-4 parts;
cr: 14-18 parts;
b:0.4 to 0.8 portion;
ce: 2-4 parts;
zr:0.2 to 0.6 portion;
ti:0.4 to 0.8 portion;
v:0.1 to 0.5 portion;
nb: 3-5 parts;
p:0.05 to 0.1 portion;
s:0.05 to 0.1 portion;
fe:80 to 100 portions.
Preferably, the nanometer BiGaTe is prepared by uniformly mixing and sintering bismuth powder, gallium ingot and tellurium powder in a ratio of 1.
Further, the appearance form of Ce was cerium ingot, and the concentration was 99.8%.
Further, the concentration of C is 98%, the particle size is 50-100 micrometers, the concentration of W is 99.98%, the particle size is 1-5 micrometers, the concentration of Mn is 99.8%, the particle size is 50-100 micrometers, the concentration of Cr is 99.95%, the particle size is 100-300 micrometers, the concentration of B is 99.99%, the particle size is 10-30 micrometers, the concentration of Zr is 99.95%, the particle size is 800-900 micrometers, the concentration of Ti is 99.9%, the particle size is 50-100 micrometers, the concentration of V is 99.9%, the particle size is 100-200 micrometers, the concentration of Nb is 99.95%, the particle size is 200-250 micrometers, the concentration of P is 98.5%, the particle size is 50-150 micrometers, the concentration of S is 99.95%, the particle size is 50-100 micrometers, the concentration of Fe is 99.99%, and the particle size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second step of melting and refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
Further, the electric furnace melting temperature is 1000-1200 ℃, the casting temperature is 800-900 ℃, the heat treatment is normalizing and tempering treatment, the normalizing temperature is 800-900 ℃, the tempering temperature is 500-600 ℃, and the tempering treatment is repeated three times in air cooling.
The invention with the structure has the following beneficial effects:
(1) According to the invention, the nanometer BiGaTe is prepared, and the high hardness of the nanometer BiGaTe is combined with the iron-based alloy, so that the good wear-resisting effect and mechanical property are realized, and meanwhile, the nanometer BiGaTe has a stable structure, so that the technical effect of oxidation resistance is further realized;
(2) The rare earth element Ce is added, so that the distribution of inclusions in the steel casting is changed, and the toughness, wear resistance and corrosion resistance are improved;
(3) The transition metal elements Zr, ti, V and Nb are added, and the high-temperature resistance of the transition metal is realized, so that the steel casting can resist high temperature and improve the hardness;
(4) The preparation system of the heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment is mature, the treatment method is simple, and large-scale production can be realized.
Drawings
FIG. 1 is a microscopic view of a cross section of a heat-resistant and wear-resistant steel casting prepared in example 4 of the present invention under a scanning electron microscope.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the examples of the present invention, unless otherwise specified, it is understood that the raw materials and the treatment techniques are all conventional and commercially available raw materials and conventional treatment techniques in the art.
Example 1
The invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe:15 parts of (1);
c:5 parts of a mixture;
w:2 parts of (1);
mn:3 parts of a mixture;
cr:14 parts of (1);
b:0.4 part;
ce:2 parts of (1);
zr:0.2 part;
ti:0.4 part;
v:0.1 part;
nb:3 parts of a mixture;
p:0.08 part;
s:0.08 part;
fe:100 parts.
Wherein, nanometer BiGaTe is that bismuth powder, gallium ingot and tellurium powder are mixed and sintered evenly in a proportion of 1.
Wherein, the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
Wherein the concentration of C is 98%, the particle size is 50-100 micrometers, the concentration of W is 99.98%, the particle size is 1-5 micrometers, the concentration of Mn is 99.8%, the particle size is 50-100 micrometers, the concentration of Cr is 99.95%, the particle size is 100-300 micrometers, the concentration of B is 99.99%, the particle size is 10-30 micrometers, the concentration of Zr is 99.95%, the particle size is 800-900 micrometers, the concentration of Ti is 99.9%, the particle size is 50-100 micrometers, the concentration of V is 99.9%, the particle size is 100-200 micrometers, the concentration of Nb is 99.95%, the particle size is 200-250 micrometers, the concentration of P is 98.5%, the particle size is 50-150 micrometers, the concentration of S is 99.95%, the particle size is 50-100 micrometers, the concentration of Fe is 99.99%, and the particle size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second melting refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
Wherein the electric furnace melting temperature is 1000 ℃, the pouring temperature is 800 ℃, the heat treatment is normalizing and tempering treatment, the normalizing temperature is 800 ℃, the tempering temperature is 500 ℃, and the tempering treatment is repeated for three times under air cooling.
Example 2
The invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe:18 parts of a binder;
c:6 parts of (1);
w:2.5 parts;
mn:3.2 parts of;
cr:15 parts of a mixture;
b:0.5 part;
ce:2.5 parts;
zr:0.3 part;
ti:0.5 part;
v:0.2 part;
nb:3.5 parts;
p:0.08 part;
s:0.08 part;
fe:100 parts.
Wherein, nanometer BiGaTe is that bismuth powder, gallium ingot and tellurium powder are mixed and sintered evenly in a proportion of 1.
Wherein, the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
Wherein the concentration of C is 98%, the particle size is 50-100 micrometers, the concentration of W is 99.98%, the particle size is 1-5 micrometers, the concentration of Mn is 99.8%, the particle size is 50-100 micrometers, the concentration of Cr is 99.95%, the particle size is 100-300 micrometers, the concentration of B is 99.99%, the particle size is 10-30 micrometers, the concentration of Zr is 99.95%, the particle size is 800-900 micrometers, the concentration of Ti is 99.9%, the particle size is 50-100 micrometers, the concentration of V is 99.9%, the particle size is 100-200 micrometers, the concentration of Nb is 99.95%, the particle size is 200-250 micrometers, the concentration of P is 98.5%, the particle size is 50-150 micrometers, the concentration of S is 99.95%, the particle size is 50-100 micrometers, the concentration of Fe is 99.99%, and the particle size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second step of melting and refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
Wherein the electric furnace melting temperature is 1050 ℃, the casting temperature is 820 ℃, the heat treatment is normalizing and tempering treatment, the normalizing temperature is 820 ℃, the tempering temperature is 520 ℃, and the tempering treatment is repeated for three times under air cooling.
Example 3
The invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe:20 parts of (1);
c:7 parts;
w:3 parts of a mixture;
mn:3.5 parts;
cr:16 parts of a binder;
b:0.6 part;
ce:3 parts of a mixture;
zr:0.4 part;
ti:0.6 part;
v:0.3 part;
nb:4 parts of a mixture;
p:0.08 part;
s:0.08 part;
fe:100 parts.
Wherein, nanometer BiGaTe is that bismuth powder, gallium ingot and tellurium powder are mixed and sintered evenly in a proportion of 1.
Wherein, the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
Wherein the concentration of C is 98%, the grain size is 50-100 micrometers, the concentration of W is 99.98%, the grain size is 1-5 micrometers, the concentration of Mn is 99.8%, the grain size is 50-100 micrometers, the concentration of Cr is 99.95%, the grain size is 100-300 micrometers, the concentration of B is 99.99%, the grain size is 10-30 micrometers, the concentration of Zr is 99.95%, the grain size is 800-900 micrometers, the concentration of Ti is 99.9%, the grain size is 50-100 micrometers, the concentration of V is 99.9%, the grain size is 100-200 micrometers, the concentration of Nb is 99.95%, the grain size is 200-250 micrometers, the concentration of P is 98.5%, the grain size is 50-150 micrometers, the concentration of S is 99.95%, the grain size is 50-100 micrometers, the concentration of Fe is 99.99%, and the grain size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second melting refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
Wherein the melting temperature of the electric furnace is 1100 ℃, the pouring temperature is 850 ℃, the heat treatment comprises normalizing and tempering treatment, the normalizing temperature is 850 ℃, the tempering temperature is 550 ℃, and the tempering treatment is repeated for three times under air cooling.
Example 4
The invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe:23 parts;
c:9 parts of (1);
w:3.5 parts;
mn:3.8 parts;
cr:17 parts of (1);
b:0.7 part;
ce:3.5 parts;
zr:0.5 part;
ti:0.7 part;
v:0.4 part;
nb:4.5 parts;
p:0.08 part;
s:0.08 part;
fe:100 parts.
Wherein, nanometer BiGaTe is that bismuth powder, gallium ingot and tellurium powder are mixed and sintered evenly in a proportion of 1.
Wherein, the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
Wherein the concentration of C is 98%, the particle size is 50-100 micrometers, the concentration of W is 99.98%, the particle size is 1-5 micrometers, the concentration of Mn is 99.8%, the particle size is 50-100 micrometers, the concentration of Cr is 99.95%, the particle size is 100-300 micrometers, the concentration of B is 99.99%, the particle size is 10-30 micrometers, the concentration of Zr is 99.95%, the particle size is 800-900 micrometers, the concentration of Ti is 99.9%, the particle size is 50-100 micrometers, the concentration of V is 99.9%, the particle size is 100-200 micrometers, the concentration of Nb is 99.95%, the particle size is 200-250 micrometers, the concentration of P is 98.5%, the particle size is 50-150 micrometers, the concentration of S is 99.95%, the particle size is 50-100 micrometers, the concentration of Fe is 99.99%, and the particle size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second step of melting and refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
Wherein the melting temperature of the electric furnace is 1150 ℃, the pouring temperature is 880 ℃, the heat treatment comprises normalizing and tempering treatment, the normalizing temperature is 880 ℃, the tempering temperature is 570 ℃, and the tempering treatment is repeated for three times under air cooling.
Example 5
The invention provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which comprises the following raw materials in parts by weight:
nano BiGaTe:25 parts of a binder;
c:10 parts of (A);
w:4 parts of a mixture;
mn:4 parts of a mixture;
cr:18 parts of a mixture;
b:0.8 part;
ce:4 parts of a mixture;
zr:0.6 part;
ti:0.8 part;
v:0.5 part;
nb:5 parts of a mixture;
p:0.08 part;
s:0.0 part;
fe:100 parts.
Wherein, nanometer BiGaTe is that bismuth powder, gallium ingot and tellurium powder are mixed and sintered evenly in a proportion of 1.
Wherein, the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
Wherein the concentration of C is 98%, the grain size is 50-100 micrometers, the concentration of W is 99.98%, the grain size is 1-5 micrometers, the concentration of Mn is 99.8%, the grain size is 50-100 micrometers, the concentration of Cr is 99.95%, the grain size is 100-300 micrometers, the concentration of B is 99.99%, the grain size is 10-30 micrometers, the concentration of Zr is 99.95%, the grain size is 800-900 micrometers, the concentration of Ti is 99.9%, the grain size is 50-100 micrometers, the concentration of V is 99.9%, the grain size is 100-200 micrometers, the concentration of Nb is 99.95%, the grain size is 200-250 micrometers, the concentration of P is 98.5%, the grain size is 50-150 micrometers, the concentration of S is 99.95%, the grain size is 50-100 micrometers, the concentration of Fe is 99.99%, and the grain size is 100-200 micrometers.
The invention also provides a preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which comprises the following steps:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second step of melting and refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment.
Wherein the electric furnace melting temperature is 1200 ℃, the pouring temperature is 900 ℃, the heat treatment comprises normalizing and tempering treatment, the normalizing temperature is 900 ℃, the tempering temperature is 600 ℃, and the tempering treatment is repeated for three times under air cooling.
Comparative example 1
This comparative example provides a heat and wear resistant steel casting suitable for metallurgical electric power machinery, which is different from example 1 only in that nano BiGaTe is not included in the composition, the nano BiGaTe is reduced and distributed to Fe, and the remaining components, the contents of the components are the same as those of example 1, and the preparation method is as in example 1.
Comparative example 2
The comparative example provides a heat-resistant and wear-resistant steel casting suitable for mechanical equipment for metallurgical electric power, which is different from the steel casting in example 1 only in that the component does not contain Ce element, the Ce element is reduced and distributed into Fe, the rest components and the component content are the same as those in example 1, and the preparation method is as in example 1.
Comparative example 3
The comparative example provides a heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment, which is different from example 1 only in that the components do not contain nano BiGaTe and Ce elements, the nano BiGaTe and Ce elements are reduced and distributed into Fe, the other components and the component content are the same as those in example 1, and the preparation method is as in example 1.
Performance testing
According to the national standard GB/T229-2007 method for testing the impact of the charpy pendulum of the metal material, a JB-300W automatic impact tester is used for testing the impact toughness, the section of a sample is 10 multiplied by 10mm, and the impact speed is 5.2m/s; processing the sample into a 5-time standard tensile sample according to the national standard GB6397-86 metal tensile test sample, and stretching the sample on a 250KN electronic tensile testing machine at a tensile rate of 1mm/min; bending by using a universal material testing machine according to the national standard GB/T232-2010 metal material and bending test method, wherein the bending pressure is 0.01KN; according to the national standard GB/T230.1-2018 metal Rockwell hardness test, a hardness test is carried out on the longitudinal section from the surface layer of the cladding layer to the substrate by using a TMVS-1 type Vickers microhardness tester, the test is carried out once per 100 micrometers, the load is 200g, and the loading time is 10s; and (4) performing a high-temperature oxidation test for 60min by using a DSA-TGA thermogravimetric analyzer.
TABLE 1 Properties of heat-and wear-resistant steel castings suitable for metallurgical electric power machinery equipment
As shown in FIG. 1 and Table 1, the heat and wear resistant steel castings according to the embodiments of the present invention, which are suitable for metallurgical electric power machinery, have significantly higher impact toughness, tensile strength, yield strength, hardness and high temperature point than the comparative examples, which shows that the heat and wear resistant steel castings according to the present invention, which are suitable for metallurgical electric power machinery, have excellent properties such as high impact toughness, tensile strength, yield strength, hardness and high temperature point.
By adopting the preparation method of the heat-resistant and wear-resistant steel casting suitable for the metallurgical electric mechanical equipment, which is provided by the invention, the impact toughness, the tensile strength, the yield strength, the hardness and the high-temperature point of the embodiment 4 are optimal, and the impact toughness reaches 88J/cm 2 The tensile strength reaches 532Mpa, the yield strength reaches 719Mpa, the hardness reaches 316HRC, and the high-temperature point reaches 1205 ℃, so that the introduced materials need to be added in a certain amount to influence the performance, and the influence of the comprehensive performance of the steel casting is considered.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and what is shown in the drawings is only one embodiment of the present invention, and the practical application is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment is characterized by comprising the following raw materials in parts by weight:
nano BiGaTe: 10-30 parts;
c: 1-15 parts;
w: 1-5 parts;
mn: 1-5 parts;
cr: 10-20 parts;
b: 0.1-1 part;
ce: 1-5 parts;
zr: 0-1 part;
ti: 0-1 part;
v: 0-1 part;
nb: 1-6 parts;
p:0.01 to 0.2 portion;
s:0.01 to 0.2 portion;
fe:70 to 110 portions.
2. The heat-resistant and wear-resistant steel casting suitable for metallurgical electric mechanical equipment according to claim 1, characterized by comprising the following raw materials in parts by weight:
nano BiGaTe: 15-25 parts;
c: 5-10 parts;
w: 2-4 parts;
mn: 3-4 parts;
cr: 14-18 parts;
b:0.4 to 0.8 portion;
ce: 2-4 parts;
zr:0.2 to 0.6 portion;
ti:0.4 to 0.8 portion;
v: 0.1-0.5 part;
nb: 3-5 parts;
p:0.05 to 0.1 portion;
s:0.05 to 0.1 portion;
fe:80 to 100 portions.
3. A heat and wear resistant steel casting suitable for use in metallurgical electrical machinery according to claim 2 wherein: the nanometer BiGaTe is prepared by uniformly mixing and sintering bismuth powder, gallium ingot and tellurium powder in a proportion of 1.
4. A heat and wear resistant steel casting suitable for use in metallurgical electrical machinery according to claim 3 wherein: the sintering temperature of the nanometer BiGaTe is 800-900 ℃, and the sintering time is 5-10 minutes.
5. A heat and wear resistant steel casting suitable for metallurgical electrical machinery according to claim 4, characterized in that: the concentration of the bismuth powder is 99.99%, the grain size is 100-200 microns, the concentration of the gallium ingot is 99.99%, the concentration of the tellurium powder is 99.99%, and the grain size is 50-100 microns.
6. A heat and wear resistant steel casting suitable for metallurgical electrical machinery according to claim 5, characterized in that: the appearance form of Ce is cerium ingot, and the concentration is 99.8%.
7. A heat and wear resistant steel casting suitable for metallurgical electrical machinery according to claim 6, characterized in that: the concentration of C is 98%, the particle size is 50-100 micrometers, the concentration of W is 99.98%, the particle size is 1-5 micrometers, the concentration of Mn is 99.8%, the particle size is 50-100 micrometers, the concentration of Cr is 99.95%, the particle size is 100-300 micrometers, the concentration of B is 99.99%, the particle size is 10-30 micrometers, the concentration of Zr is 99.95%, the particle size is 800-900 micrometers, the concentration of Ti is 99.9%, the particle size is 50-100 micrometers, the concentration of V is 99.9%, the particle size is 100-200 micrometers, the concentration of Nb is 99.95%, the particle size is 200-250 micrometers, the concentration of P is 98.5%, the particle size is 50-150 micrometers, the concentration of S is 99.95%, the particle size is 50-100 micrometers, the concentration of Fe is 99.99%, and the particle size is 100-200 micrometers.
8. A method for producing a heat and wear resistant steel casting suitable for metallurgical electric power machinery, characterized by producing a heat and wear resistant steel casting suitable for metallurgical electric power machinery according to claim 2, comprising the steps of:
the method comprises the following steps: preparing nanometer BiGaTe;
step two: carrying out electric furnace melting refining on the nanometer BiGaTe prepared in the first step and other components;
step three: pouring the product of the second melting refining to obtain the steel casting;
step four: and D, carrying out heat treatment on the steel casting prepared in the third step to obtain the heat-resistant and wear-resistant steel casting suitable for the mechanical equipment for metallurgical electric power.
9. The method for producing a heat and wear resistant steel casting suitable for metallurgical electric power machinery according to claim 8, wherein: the melting temperature of the electric furnace is 1000-1200 ℃, and the pouring temperature is 800-900 ℃.
10. The method for producing a heat and wear resistant steel casting suitable for metallurgical electric power machinery according to claim 9, wherein: the heat treatment comprises normalizing treatment and tempering treatment, wherein the normalizing temperature is 800-900 ℃, the tempering temperature is 500-600 ℃, and the tempering treatment is repeated for three times in air cooling.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014521A (en) * | 2012-12-27 | 2013-04-03 | 四川优机实业股份有限公司 | High-hardness high-toughness wear-resistant steel and production method thereof |
| CN106893941A (en) * | 2017-02-16 | 2017-06-27 | 河南理工大学 | A kind of low-alloy wear-resistant steel and its heat treatment method |
| CN114231856A (en) * | 2021-12-22 | 2022-03-25 | 广东省科学院新材料研究所 | Micron carbide reinforced low-density wear-resistant steel and preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103014521A (en) * | 2012-12-27 | 2013-04-03 | 四川优机实业股份有限公司 | High-hardness high-toughness wear-resistant steel and production method thereof |
| CN106893941A (en) * | 2017-02-16 | 2017-06-27 | 河南理工大学 | A kind of low-alloy wear-resistant steel and its heat treatment method |
| CN114231856A (en) * | 2021-12-22 | 2022-03-25 | 广东省科学院新材料研究所 | Micron carbide reinforced low-density wear-resistant steel and preparation method and application thereof |
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