CN115074636A - Preparation method of high-carbon damping vibration-damping steel and smelting and casting device thereof - Google Patents
Preparation method of high-carbon damping vibration-damping steel and smelting and casting device thereof Download PDFInfo
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a preparation method of high-carbon damping vibration attenuation steel and a smelting and casting device thereof, belonging to the field of structural function integrated engineering materials. The invention adopts a composite casting mode combining vacuum induction melting and centrifugal casting, utilizes a composite shear flow technology, combines subsequent controlled rolling and controlled cooling and heat treatment technologies, and shortens the heat treatment time of the high-carbon damping vibration-damping steel. The invention comprises a composite shear flow casting-rolling-heat treatment process. The method can greatly shorten the subsequent graphitization heat treatment time of the vibration-damping steel, optimize the performance and save the cost. The invention has important significance for popularization and application of the high-carbon damping vibration attenuation steel.
Description
Technical Field
The invention relates to a preparation method of high-carbon damping vibration attenuation steel and a smelting and casting device thereof. Belongs to the technical field of structural function integrated engineering materials.
Background
With the continuous development of science and technology, the requirements of people on the working environment are continuously improved, and noise is increasingly paid attention to people as a common pollution source in work, so that the development of a damping material meeting the working performance becomes a key direction of the current material development [ document one: dufang, single long Ji, Chua, Yanghai wave, shallow talking damping noise-reducing material [ J ] scientific and technological innovation, 2018 (32): 189-190].
The current vibration and noise reduction ideas can be mainly divided into three categories: one is to isolate the vibration source from the surrounding structural components by designing parts or changing the mechanical structure to prevent the vibration from radiating to the surroundings, or to dissipate the vibration before it propagates, which inevitably increases the structural volume and increases the cost [ document two: li Xiang Wen damping alloy (I) [ J ] Metal world, 1995, (5):10-11 ]. The second type is to design a coating on the surface of the material to obtain the damping effect without changing the performance of the material [ document three: chen Yu gan, Zhu Qing Yu, Zhu Ji Jing yu. Experimental improvement on failure of blank specific objective to response and effect of a reproducing hard coating treatment [ J ] Journal of Central South University,2021,28(2) ]. The third category is to directly change the properties of the material itself or design a new structural material to simultaneously satisfy the use requirement and the vibration reduction requirement, and reduce the production cost, which is the main design idea of the current vibration reduction material [ document four: jaydeep M. Karandikar, Christopher T. Value of information-based experimental design Application to process damping in milling [ J ] Precision Engineering 2014 38: 799-.
Vibration reduction and noise reduction in marine ships are very important tasks, and the development of high-performance materials with vibration reduction property is urgent needThe problem to be solved. The steel has the characteristics of excellent comprehensive performance, low production cost and wide application range, and the current structural materials are mainly steel. The base of the sea pump for ships uses the traditional carbon structural steel as a structural material, and the damping loss factor Q of the base -1 Less than 0.01, the damping performance is not good, and a replacement steel material thereof needs to be found [ document five: study on damping mechanisms of Yong, Liu Li, Guo Lin, vibration-damping cast iron, Fe-Mn alloy and Fe-Cr-Al alloy [ J]The thermal processing technology 2016 (2016, 45(04):79-80+ 83).]. If a large amount of graphite is separated out in the steel graphitization process, the steel can improve the vibration damping performance while ensuring excellent mechanical performance, thereby achieving the optimization of mechanical performance and vibration damping performance, playing the role of vibration damping and noise reduction, and meeting the use requirement. The complex phase type high carbon damping vibration attenuation steel has excellent mechanical property and vibration attenuation property, and has the advantages of less alloy element types, low content and low raw material cost, but needs longer heat treatment time for achieving better mechanical property and vibration attenuation property (patent number: CN 113355603A).
The shape, size and distribution of the graphite have great influence on the mechanical property and the vibration damping property, and the graphite in the as-cast steel can be changed to influence graphitization in the heat treatment process, so that the mechanical property and the vibration damping property are optimized finally. In the composite shear flow casting technology of the subject group, the temperature field is controlled by controlling the size and the direction of the flow field in the solidification process, the metal melt has larger supercooling degree, explosive nucleation can be realized, the chemical elements at different positions of the cast ingot can be uniformly distributed, and the macroscopic segregation is basically avoided; the form, size and distribution of the second phase can be changed, so that the second phase is finer and is uniformly dispersed and distributed; the columnar dendrites in the macrostructure of the finally obtained cast ingot are greatly reduced, and the cast ingot is composed of fine equiaxial dendrites and fine grains on the surface layer [ document six: wang Tao, Chen Xiao hua, Luo xi ang. Formation of Si nanoparticle in Al matrix for Al-7wt.% Si alloy along with flow casting [ J ]. Journal of Alloys and Compounds, 2018, 739: 30-34.
Disclosure of Invention
The invention aims to provide a high-carbon damping vibration attenuation steel ingot prepared by using a composite shear flow casting technology, and the ingot is subjected to hot rolling and heat treatment subsequently, so that the high-carbon damping vibration attenuation steel with short heat treatment time and excellent performance is prepared.
A preparation method of high-carbon damping vibration attenuation steel adopts a composite casting mode combining vacuum induction melting and centrifugal casting, utilizes a composite shear flow technology and combines subsequent controlled rolling and controlled cooling and heat treatment technologies, and shortens the heat treatment time of the high-carbon damping vibration attenuation steel, and comprises the following steps:
(1) preparing raw materials required by smelting, wherein the high-carbon damping vibration-damping steel comprises the following chemical components in percentage by mass: c is more than or equal to 1.2%, Si: 1.5% -1.7%, Mn: 0.20% -0.22%, Ni: 2.15% -2.25%, Al: 0.25% -0.27%, the balance: fe;
(2) putting raw materials into a crucible of a smelting system, embedding a casting mold into a centrifugal barrel, filling a refractory heat-insulating material between the casting mold and the centrifugal barrel, and carrying out preheating treatment on the casting mold;
(3) and heating and melting the raw materials in the crucible by adopting an induction melting process, preserving heat, and pouring the alloy melt into the casting mold after the heat preservation is finished.
(4) And starting a motor to drive the bottom centrifugal disc to drive the centrifugal barrel, and moving the centrifugal barrel and the bottom centrifugal disc according to a set rotation speed ratio until the alloy is completely solidified and then taking out the cast ingot.
(5) And after the ingot is homogenized at a high temperature, rolling by controlling the temperature in the rolling process.
(6) And carrying out isothermal heat treatment on the rolled plate, and then carrying out furnace cooling treatment to graphitize the rolled plate, thus obtaining the high-carbon damping vibration attenuation steel.
Further, in the step (4), the bottom centrifugal disc and the centrifugal barrel rotate simultaneously to form rotation and revolution of the melt, and composite shear flow is generated in the alloy melt in the solidification process; the composite shear flow promotes the homogenization of a temperature field and a concentration field in the solidification process, improves the nucleation rate of graphite, and on the other hand, under the synergistic action of the composite shear flow and the anisotropic surface tension, the graphite is split and refined in the growth process, and finally the refinement of the graphite size in the ingot is realized.
Further, the rolling in the step (5) comprises the following specific steps:
step 1: cutting the cast ingot into a plate blank, heating to 1200 ℃, preserving heat for 0.8-1.2 hours, carrying out homogenization treatment, controlling the initial rolling temperature and the final rolling temperature, carrying out multi-pass rough rolling, and keeping proper rolling reduction and rolling temperature in each pass of rolling;
and a step 2: performing multi-pass finish rolling, keeping proper rolling reduction and rolling temperature in each rolling, and controlling the final total rolling reduction to obtain a required rolled plate;
step 3: after rolling, immediately putting the steel plate into a heat treatment furnace with a certain temperature prepared in advance, turning off the power supply of the heat treatment furnace, and taking out the vibration-damping steel rolled plate after furnace cooling to room temperature;
further, the rolling passes of the rough rolling in the step 1 are 3-5, and the reduction of each pass is 5-15 mm; the cut-off temperature for rough rolling was 800 ℃.
Furthermore, in the step 2, the pass of finish rolling is 3-5 times, the reduction of each pass is 1-5 mm, the initial temperature of finish rolling is 780 ℃, and the finishing cut-off temperature is 740 ℃.
Further, the heat treatment heat preservation time in the step (6) is 1-8 hours.
The preheating of the casting mold and the filling of the refractory heat-insulating material in the step (2) are to maintain a certain supercooling degree after the melt is poured into the casting mold, avoid the rapid solidification of the melt and ensure that a composite shear flow is applied to the alloy melt through the rotation of a bottom centrifugal disc and a centrifugal barrel. The liquid state of the melt is kept after the melt is poured into the casting mold, so that the composite shear flow is ensured to play a role in the solidification process of the alloy melt.
In the step (3), the induction heating process is adopted, so that the alloy elements are uniformly distributed in the melt in the smelting process, and favorable conditions are provided for uniform nucleation and growth of crystals in the melt in the later solidification process.
A smelting and casting device adopted by the method for preparing the high-carbon damping vibration attenuation steel is shown in a schematic diagram of the principle of the adopted equipment in figure 1. The device consists of a smelting system, a pouring system, a bottom centrifugal disc, a connecting shaft and a centrifugal barrel. The casting mould is arranged in a centrifugal barrel, the centrifugal barrel is connected with a bottom centrifugal disc through a connecting shaft, the bottom centrifugal disc rotates under the control of a motor, the centrifugal barrel is driven to rotate through the connecting shaft, and the rotating speed ratio of the bottom centrifugal disc and the centrifugal barrel is realized by changing a gear of the connecting shaft so as to adjust the transmission ratio.
The invention adopts composite shear flow casting-rolling-heat treatment to prepare the high-carbon damping vibration-damping steel, wherein the composite shear flow casting technology is innovatively adopted. The prepared damping steel can greatly shorten the heat treatment time while ensuring excellent mechanical property and damping property.
The invention has the beneficial effects that: after the melt is injected into the mold, the composite shear flow causes the elements in the melt to be uniformly mixed, and simultaneously promotes the uniform distribution of the temperature field on a macroscopic region. Thus, the method can ensure that a large amount of nuclei are formed at the same time under a certain supercooling degree, and the grain refinement is realized. Therefore, by the composite shear flow casting, the graphite phase in the high-carbon vibration-damping steel ingot is fine and dispersed, which plays an important role in shortening the subsequent heat treatment time and obtaining excellent performance. The high-carbon damping vibration attenuation steel manufactured by the composite shear flow casting method has the advantages of low cost, short heat treatment period, excellent performance and the like. The process is simple and feasible, and can be used for mass production.
Drawings
Other features, details and advantages of the present invention will become more fully apparent from the following detailed description of the specific embodiments of the invention when taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view of a composite shear flow apparatus.
FIG. 2 is a scanning electron microscope image of the as-cast microstructure of the high-carbon damping vibration-damping steel under the action of the composite shear flow.
FIG. 3 is a scanning electron microscope image of the as-cast microstructure of the high-carbon damping vibration-damping steel in the embodiment under conventional casting.
FIG. 4 is a comparative plot of thermal treated tensile engineering stress-strain curves for high carbon damped damping steel in the example of composite shear flow casting versus conventional casting.
The thermal treated damping performance of the high carbon damped damping steel in the embodiment of FIG. 5 was compared between the composite shear flow casting and the conventional casting.
Detailed Description
The invention is described in detail below by means of exemplary embodiments. It should be noted that the following examples are given by way of illustration only and are not meant to limit the invention.
Example (b):
the method comprises the following steps: the high-carbon damping vibration attenuation steel comprises the following main elements in percentage by mass: c: 1.2%, Si: 1.6%, Mn: 0.210%, Ni: 2.2%, Al: 0.260%, and the balance: fe. The method comprises the following steps of proportioning according to the chemical components, putting raw materials into a crucible of a smelting system, embedding the casting mold into a centrifugal barrel, filling a refractory heat-insulating material between the casting mold and the centrifugal barrel, carrying out preheating treatment on the casting mold at the temperature of 200 ℃ for more than 2 hours, smelting by adopting a vacuum induction furnace, heating the raw materials in the crucible to the temperature of more than 1500 ℃ for melting, carrying out composite shear flow casting after the melting is finished, namely pouring an alloy melt into the casting mold, starting a motor to drive a bottom centrifugal disc, driving the centrifugal barrel, and carrying out the following steps on the centrifugal barrel and the bottom centrifugal disc according to the ratio of 1: the rotation speed ratio of 0.75 is moved for 20 minutes until the alloy is completely solidified, and then the ingot is taken out. In contrast, the traditional ingot is prepared according to the chemical components, the same process is used for smelting, and the alloy melt is poured into the casting mold until the alloy melt is completely solidified after the smelting is finished.
Step two: carrying out hot rolling on the two prepared ingots after high-temperature homogenization, and specifically comprising the following steps: step 1: cutting the cast ingot into a plate blank with the thickness of 60mm, heating to 1200 ℃, keeping the temperature for 2 hours, carrying out four-pass rough rolling at the initial rolling temperature of 1080 ℃, wherein the rolling reduction is 15, 10, 7 and 5mm in sequence, the rolling temperature is 1080 ℃, 1010 ℃, 950 ℃ and 800 ℃ in sequence, and finally rolling into a steel plate with the thickness of 23 mm; and a step 2: performing four-pass finish rolling, wherein the rolling reduction is 4,3, 3 and 2mm in sequence, the rolling temperature is 780 ℃, 770 ℃, 760 ℃ and 740 ℃ in sequence, and finally rolling into a steel plate with the thickness of 11 mm; step 3: and immediately putting the rolled plate into a prepared annealing furnace at 390 ℃ after rolling is finished, and taking out after the rolled plate is cooled to room temperature along with the furnace.
Step three: and (3) preserving the heat of the rolled plate which is subjected to composite shear flow casting and hot rolling for 1h at 750 ℃, and then carrying out furnace cooling treatment to graphitize the rolled plate, thus obtaining the high-carbon damping vibration attenuation steel plate. For comparison, conventionally cast and hot rolled plates were held at 750 ℃ for 4h and 8h, respectively.
Fig. 2 and fig. 3 are scanning photographs of the as-cast structure of the damping steel in the composite shear flow casting and the conventional casting, respectively, wherein the structure is ferrite + pearlite + graphite, and it can be clearly seen that the graphite in the damping steel cast by the composite shear flow is finer and is dispersed and uniformly distributed.
The mechanical properties of the heat treatment plate which is insulated for 1h at 750 ℃ after the composite shear flow casting process is adopted are as follows: tensile strength 634.7MPa, yield strength 472MPa, and elongation after fracture 25.2%. The mechanical properties of the heat treatment plate which is subjected to heat preservation for 4 hours at 750 ℃ by adopting the traditional casting process are as follows: the tensile strength is 553.5MPa, the yield strength is 440MPa, and the elongation after fracture is 27.52 percent; the mechanical properties of the heat treatment plate which is subjected to heat preservation for 8 hours at 750 ℃ by adopting the traditional casting process are as follows: tensile strength 611.9MPa, yield strength 459.1MPa, and elongation after fracture 23.6%. The stress strain curve is shown in fig. 4. It can be seen that the heat treatment time required for the vibration-damping steel prepared by the composite shear flow casting is greatly shortened under the condition of similar strength. And (3) testing the damping performance of the heat-treated steel plate by using a DMA Q800 experimental instrument. FIG. 5 shows damping loss factors Q of high-carbon damping vibration-damping steel prepared by different casting processes under different heat treatment processes -1 Curve of change with strain. It can be seen that the damping steel prepared by the composite shear flow casting only needs 1h of heat treatment time at the same heat treatment temperature, and the damping performance (Q) is high -1 = 0.0218) is better than the vibration damping performance (Q) of the vibration damping steel prepared by traditional casting when the temperature is kept for 4h or 8h -1 0.0165, 0.0194, respectively).
In summary, under the condition of ensuring the mechanical property, the heat treatment time required by the high-carbon damping vibration attenuation steel prepared by the composite shear flow technology is greatly shortened, and the damping property of the high-carbon damping vibration attenuation steel is better than that of the high-carbon damping vibration attenuation steel prepared by traditional casting.
Claims (7)
1. A preparation method of high-carbon damping vibration attenuation steel is characterized in that a composite casting mode combining vacuum induction melting and centrifugal casting is adopted, a composite shear flow technology is utilized, and a subsequent controlled rolling, controlled cooling and heat treatment technology is combined, so that the heat treatment time of the high-carbon damping vibration attenuation steel is shortened, and the preparation method comprises the following steps:
(1) preparing raw materials required by smelting, wherein the high-carbon damping vibration-damping steel comprises the following chemical components in percentage by mass: c is more than or equal to 1.2%, Si: 1.5% -1.7%, Mn: 0.20% -0.22%, Ni: 2.15% -2.25%, Al: 0.25% -0.27%, the balance: fe;
(2) putting raw materials into a crucible of a smelting system, embedding a casting mold into a centrifugal barrel, filling a refractory heat-insulating material between the casting mold and the centrifugal barrel, and carrying out preheating treatment on the casting mold;
(3) heating and melting the raw materials in the crucible by adopting an induction melting process, preserving heat, and pouring the alloy melt into a casting mold after the heat preservation is finished;
(4) starting a motor to drive a bottom centrifugal disc to drive a centrifugal barrel, wherein the centrifugal barrel and the bottom centrifugal disc move according to a set rotation speed ratio until the alloy is completely solidified, and then taking out the cast ingot;
(5) after the ingot casting is homogenized at a high temperature, rolling by adopting the temperature of the controlled rolling process;
(6) and carrying out isothermal heat treatment on the rolled plate, and then carrying out furnace cooling treatment to graphitize the rolled plate, thus obtaining the high-carbon damping vibration attenuation steel.
2. The method for preparing the high-carbon damping vibration-damping steel as claimed in claim 1, wherein in the step (4), the bottom centrifugal disc and the centrifugal barrel rotate simultaneously to form rotation and revolution of the melt, and composite shear flow is generated in the alloy melt during solidification; the composite shear flow promotes the homogenization of a temperature field and a concentration field in the solidification process, improves the nucleation rate of graphite, and on the other hand, under the synergistic action of the composite shear flow and the anisotropic surface tension, the graphite is split and refined in the growth process, and finally the refinement of the graphite size in the ingot is realized.
3. The method for preparing the high-carbon damping vibration-damping steel as claimed in claim 1, wherein the rolling in the step (5) comprises the following specific steps:
step 1: cutting the cast ingot into a plate blank, heating to 1200 ℃, preserving heat for 0.8-1.2 hours, carrying out homogenization treatment, controlling the initial rolling temperature and the final rolling temperature, carrying out multi-pass rough rolling, and keeping proper rolling reduction and rolling temperature for each pass of rolling;
and a step 2: performing multi-pass finish rolling, keeping proper rolling reduction and rolling temperature in each rolling, and controlling the final total rolling reduction to obtain a required rolled plate;
step 3: and after the rolling is finished, immediately putting the steel plate into a heat treatment furnace with a certain temperature, which is prepared in advance, turning off the power supply of the heat treatment furnace, and taking out the vibration reduction steel rolled plate after the vibration reduction steel rolled plate is cooled to room temperature along with the furnace.
4. The method for preparing the high-carbon damping vibration-damping steel as claimed in claim 3, wherein the rolling passes of the rough rolling in the step 1 are 3-5, and the reduction of each pass is 5-15 mm; the cut-off temperature for rough rolling was 800 ℃.
5. The method for preparing high-carbon damping vibration-damping steel according to claim 3, wherein in the step 2, the finish rolling passes are 3 to 5, the reduction per pass is 1 to 5mm, the initial temperature of the finish rolling is 780 ℃, and the final temperature of the finish rolling is 740 ℃.
6. The method for preparing high-carbon damping vibration-damping steel according to claim 1, wherein the heat-treatment holding time in step (6) is 1 to 8 hours.
7. A smelting and casting device adopted in the preparation method of the high-carbon damping vibration-damping steel according to claim 1 is characterized by comprising a smelting system, a pouring system, a bottom centrifugal disc, a connecting shaft and a centrifugal barrel; the casting mold is arranged in a centrifugal barrel, and the centrifugal barrel is connected with a bottom centrifugal disc through a connecting shaft; the bottom centrifugal disc is controlled to rotate by a motor on one hand, and drives the centrifugal barrel to rotate by a connecting shaft on the other hand; the rotation speed ratio of the bottom centrifugal disc and the centrifugal barrel is adjusted by replacing the coupling shaft gear so as to adjust the transmission ratio.
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| CN202210856214.3A CN115074636A (en) | 2022-07-21 | 2022-07-21 | Preparation method of high-carbon damping vibration-damping steel and smelting and casting device thereof |
| CN202310889758.4A CN117026061A (en) | 2022-07-21 | 2023-07-20 | Preparation method of high-carbon damping vibration reduction steel and smelting and casting device thereof |
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| CN202310889758.4A Pending CN117026061A (en) | 2022-07-21 | 2023-07-20 | Preparation method of high-carbon damping vibration reduction steel and smelting and casting device thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514753A (en) * | 2001-06-11 | 2004-07-21 | Centrifugal Casting nickel base super alloys in isotropic graphite molds under vacuum | |
| CN101041165A (en) * | 2007-04-03 | 2007-09-26 | 西安交通大学 | Low-aliquation high-speed steel roll and the preparing method |
| JP2012219344A (en) * | 2011-04-11 | 2012-11-12 | Toyota Industries Corp | Method for producing damping material made of iron alloy, and damping material made of iron alloy |
| CN109930034A (en) * | 2019-04-12 | 2019-06-25 | 杭州辰卓科技有限公司 | A kind of welding material and technique between high Mn content copper-manganese damping alloy |
| CN110538977A (en) * | 2019-09-17 | 2019-12-06 | 北京科技大学 | multidimensional shear flow casting device and method for weakening alloy segregation |
| CN113355603A (en) * | 2021-06-15 | 2021-09-07 | 北京科技大学 | Structural-function integrated high-carbon damping vibration attenuation steel and preparation method thereof |
-
2022
- 2022-07-21 CN CN202210856214.3A patent/CN115074636A/en active Pending
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2023
- 2023-07-20 CN CN202310889758.4A patent/CN117026061A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514753A (en) * | 2001-06-11 | 2004-07-21 | Centrifugal Casting nickel base super alloys in isotropic graphite molds under vacuum | |
| CN101041165A (en) * | 2007-04-03 | 2007-09-26 | 西安交通大学 | Low-aliquation high-speed steel roll and the preparing method |
| JP2012219344A (en) * | 2011-04-11 | 2012-11-12 | Toyota Industries Corp | Method for producing damping material made of iron alloy, and damping material made of iron alloy |
| CN109930034A (en) * | 2019-04-12 | 2019-06-25 | 杭州辰卓科技有限公司 | A kind of welding material and technique between high Mn content copper-manganese damping alloy |
| CN110538977A (en) * | 2019-09-17 | 2019-12-06 | 北京科技大学 | multidimensional shear flow casting device and method for weakening alloy segregation |
| CN113355603A (en) * | 2021-06-15 | 2021-09-07 | 北京科技大学 | Structural-function integrated high-carbon damping vibration attenuation steel and preparation method thereof |
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| CN117026061A (en) | 2023-11-10 |
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