CN115331406B - Vermicular brake drum molten iron quality early warning system and early warning method thereof - Google Patents
Vermicular brake drum molten iron quality early warning system and early warning method thereof Download PDFInfo
- Publication number
- CN115331406B CN115331406B CN202210856367.8A CN202210856367A CN115331406B CN 115331406 B CN115331406 B CN 115331406B CN 202210856367 A CN202210856367 A CN 202210856367A CN 115331406 B CN115331406 B CN 115331406B
- Authority
- CN
- China
- Prior art keywords
- early warning
- vermicular
- brake drum
- iron
- molten iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007711 solidification Methods 0.000 claims abstract description 33
- 230000008023 solidification Effects 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 229910001126 Compacted graphite iron Inorganic materials 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 4
- 230000005496 eutectics Effects 0.000 claims description 21
- 238000002076 thermal analysis method Methods 0.000 claims description 19
- 229910001018 Cast iron Inorganic materials 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241001584785 Anavitrinella pampinaria Species 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
- G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Electromagnetism (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a vermicular iron brake drum molten iron quality early warning system and an early warning method thereof, wherein the system comprises a temperature acquisition module, a conversion module, an industrial control device, a digital I/O module and a display terminal/early warning device which are connected in sequence; the temperature acquisition module is used for acquiring signal data of a vermicular/ductile iron molten iron production line site and transmitting the acquired signal data to the industrial personal computer device through the conversion module; the industrial personal computer device is used for judging the received signal data and sending a judgment result to the display terminal/early warning device through the digital I/O module; the display terminal/early warning device is used for early warning. According to the invention, the sample solidification temperature curve of limited times of normal production of the vermicular brake drum is collected as the sample curve, and when the early warning system detects that the molten iron solidification curve deviates from a certain threshold value of the normal sample curve, early warning is carried out, so that the problem of product quality caused by casting molten iron is avoided, and the economic loss is reduced, and meanwhile, the product quality is effectively ensured.
Description
Technical Field
The invention relates to the technical field of quality management of vermicular brake drum molten iron, in particular to a vermicular brake drum molten iron quality early warning system and an early warning method thereof.
Background
The tensile strength and rigidity of the vermicular cast iron are respectively 75% and 45% higher than those of the common gray iron, and the fatigue strength is almost 2 times of that of the common gray iron, but the vermicular cast iron has good shock resistance, heat conductivity and castability, and is an ideal material for automobile parts such as brake drums and the like. The range of the residual amount of vermiculizer elements allowed by the production of vermicular iron is very narrow, and the change of the sulfur content of the raw materials easily causes insufficient vermiculization and even produces waste products. The existing vermicular cast iron melt state measuring instrument can effectively ensure the vermicular rate of products, but the price and the consumable material cost are expensive, and a secondary supplementing procedure is needed to be added, so that the production efficiency is affected. In addition, aiming at the production of products with different components, the existing instrument needs to correspondingly adjust the model, the field implementation period is increased, and under the condition that the current raw materials and technological parameters are stable, the vermicular brake drum molten iron quality management early warning system is invented, so that the development cost is not required, the production efficiency of enterprises is not influenced, and the product quality can be ensured.
Disclosure of Invention
The invention aims to provide a vermicular brake drum molten iron quality early warning system and a vermicular brake drum molten iron early warning method aiming at the problems. The method has the advantages that the solidification temperature curve of the samples, which is normally produced by the vermicular brake drum and is limited in times, is collected and used as the sample curve, and when the early warning system detects that the solidification curve of the molten iron deviates from a certain threshold value of the normal sample curve, early warning is carried out, so that the problem of product quality caused by casting the molten iron is avoided, and the product quality is effectively ensured while the economic loss is reduced.
In order to achieve the aim, the invention provides a vermicular brake drum molten iron quality early warning system which comprises a temperature acquisition module, a conversion module, an industrial control device, a digital I/O module and a display terminal/early warning device, wherein the temperature acquisition module, the conversion module, the industrial control device, the digital I/O module and the display terminal/early warning device are sequentially connected; the temperature acquisition module is used for acquiring signal data of a vermicular/ductile iron molten iron production line site and transmitting the acquired signal data to the industrial personal computer device through the conversion module; the industrial personal computer device is used for judging the received signal data and sending a judgment result to the display terminal/early warning device through the digital I/O module; the display terminal/early warning device is used for displaying the judging result of the industrial personal computer device.
Specifically, the signal data collected by the temperature collection module are thermal analysis solidification curves and temperature characteristic values on the curves, including liquidus temperature TL, eutectic start temperature TEN, eutectic minimum temperature TEU, eutectic maximum temperature TEU, eutectic rechueing temperature Δte and eutectic end temperature TS.
Specifically, the judging result of the industrial personal computer device on the received signal data is divided into the following two states, wherein the first state is as follows: the vermicular rate is more than or equal to 80 percent, and meets the production requirements of vermicular brake drum products; second state: the vermiculizer rate is lower than 80 percent, and does not meet the production requirements of vermicular iron brake drum products.
Specifically, the terminal/early warning device displays the judging result of the industrial personal computer device through the indicator lamp, and when the judging result is in the second state, the indicator lamp lights up a red light and warns that the product is unqualified.
An early warning method of a vermicular brake drum molten iron quality early warning system comprises the following steps:
s1, collecting a stable standard thermal analysis solidification curve of an existing vermicular brake drum production enterprise by using a special sample cup, and measuring the vermicular rate of a solidified sample of the sample cup;
s2, establishing a database for storing n stable and standard thermal analysis solidification curves and corresponding vermiculizer on an industrial personal computer device according to the standard thermal analysis solidification curves and the vermiculizer of the sample cup solidification samples collected in the step S1, and summarizing the vermiculizer within a certain characteristic parameter range to be used as basic data for judging production of vermicular iron brake drum products;
s3, collecting a solidification curve of the existing iron water sample cup to be tested;
step S4, inquiring whether the characteristic value of the thermal analysis solidification curve of the vermicular cast iron water to be detected is within the range of the characteristic value stored in the step S2 or not through an industrial personal computer device according to the solidification curve of the iron water sample cup to be detected obtained in the step S3, if not, executing the step S5, otherwise, executing the step S6;
s5, a red light of an indicator light of the display terminal/early warning device is turned on to remind workers of quality problems of vermicular iron brake drum molten iron;
and S6, ending.
Specifically, the creep rate in the step S2 is summarized in a certain characteristic parameter range, and the specific method is as follows:
firstly, finding out samples with the vermicular rate of more than or equal to 80% in a database, and then inducing the range of the eutectic minimum temperature TEU and the eutectic re-glow temperature delta Te corresponding to the samples.
The invention has the beneficial effects that:
according to the invention, the solidification temperature curve of the sample with limited times, which is normally produced by the vermicular brake drum, is collected as the sample curve, and when the early warning system detects that the solidification curve of the molten iron deviates from a certain threshold value of the normal sample curve, early warning is carried out, so that the problem of product quality caused by casting the molten iron is avoided, and the economic loss is reduced, and meanwhile, the product quality is effectively ensured.
Drawings
FIG. 1 is a schematic diagram of a composition structure of a vermicular brake drum molten iron quality early warning system of the present invention;
FIG. 2 is a flow chart of an early warning method of the vermicular brake drum molten iron quality early warning system of the present invention;
fig. 3 is a block diagram of a database in an embodiment of the invention.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments.
Examples: see fig. 1-3.
As shown in fig. 1, the system for early warning the quality of molten iron of the vermicular brake drum comprises a temperature acquisition module, a conversion module, an industrial control device, a digital I/O module and a display terminal/early warning device, wherein the temperature acquisition module, the conversion module, the industrial control device, the digital I/O module and the display terminal/early warning device are sequentially connected; the temperature acquisition module is used for acquiring signal data of a vermicular/ductile iron molten iron production line site and transmitting the acquired signal data to the industrial personal computer device through the conversion module; the industrial personal computer device is used for judging the received signal data and sending a judgment result to the display terminal/early warning device through the digital I/O module; the display terminal/early warning device is used for displaying the judging result of the industrial personal computer device.
Specifically, the signal data collected by the temperature collection module are thermal analysis solidification curves and temperature characteristic values on the curves, including liquidus temperature TL, eutectic start temperature TEN, eutectic minimum temperature TEU, eutectic maximum temperature TEU, eutectic rechueing temperature Δte and eutectic end temperature TS.
Specifically, the judging result of the industrial personal computer device on the received signal data is divided into the following two states, wherein the first state is as follows: the vermicular rate is more than or equal to 80 percent, and meets the production requirements of vermicular brake drum products; second state: the vermiculizer rate is lower than 80 percent, and does not meet the production requirements of vermicular iron brake drum products.
Specifically, the terminal/early warning device displays the judging result of the industrial personal computer device through the indicator lamp, and when the judging result is in the second state, the indicator lamp lights up a red light and warns that the product is unqualified.
As shown in FIG. 2, the early warning method of the vermicular cast iron brake drum molten iron quality early warning system comprises the following steps:
s1, collecting a stable standard thermal analysis solidification curve of an existing vermicular brake drum production enterprise by using a special sample cup, and measuring the vermicular rate of a solidified sample of the sample cup;
s2, establishing a database for storing n stable and standard thermal analysis solidification curves and corresponding vermiculizer on an industrial personal computer device according to the standard thermal analysis solidification curves and the vermiculizer of the sample cup solidification samples collected in the step S1, and summarizing the vermiculizer within a certain characteristic parameter range to be used as basic data for judging production of vermicular iron brake drum products;
s3, collecting a solidification curve of the existing iron water sample cup to be tested;
step S4, inquiring whether the characteristic value of the thermal analysis solidification curve of the vermicular cast iron water to be detected is within the range of the characteristic value stored in the step S2 or not through an industrial personal computer device according to the solidification curve of the iron water sample cup to be detected obtained in the step S3, if not, executing the step S5, otherwise, executing the step S6;
s5, a red light of an indicator light of the display terminal/early warning device is turned on to remind workers of quality problems of vermicular iron brake drum molten iron;
and S6, ending.
Specifically, the creep rate in the step S2 is summarized in a certain characteristic parameter range, and the specific method is as follows:
firstly, finding out samples with the vermicular rate of more than or equal to 80% in a database, and then inducing the range of the eutectic minimum temperature TEU and the eutectic re-glow temperature delta Te corresponding to the samples.
Referring to fig. 1-3, the present invention is further illustrated by a specific example.
Raw materials of the vermicular brake drum produced by certain enterprises comprise pig iron, scrap steel and recycled materials, and the requirements of the enterprises on specific components of the produced vermicular brake drum are shown in the following table 1. The scrap steel is taken as basic furnace charge, the carbon content and the silicon content are regulated by carburant and ferrosilicon, and are smelted in a 300Kg medium frequency induction furnace, and a vermiculizer R is adopted 2 A (the addition amount is shown in the following table 2) and inoculant YFY-8 (the addition amount is 0.6%), wherein a ladle bottom flushing method is adopted for vermiculizer and inoculation; the tapping temperature of molten iron is 1510-1550 ℃ and the casting temperature of the sample is 1380-1420 ℃.
TABLE 1 vermicular cast iron base iron composition and controlled final composition
| C% | Si% | Mn% | P% | S% | Cu% | Cr% | Mg% | Re% | |
| Base iron | 3.7-3.8 | 1.4-1.6 | <0.05 | <0.03 | |||||
| Final ingredients | 3.6-3.7 | 2.2-2.4 | 0.65-0.75 | <0.05 | <0.015 | 0.3-0.4 | 0.04-0.08 | 0.01-0.015 | 0.03-0.04 |
TABLE 2 vermiculizer addition
| Sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Addition amount (%) | 0.08 | 0.09 | 0.10 | 0.11 | 0.12 | 0.13 | 0.15 | 0.18 | 0.22 | 0.29 |
And collecting a thermal analysis solidification curve of the vermicular cast iron which is just subjected to vermiculization and inoculation treatment by adopting a thermal analysis sample cup, casting a microstructure analysis sample, and measuring the vermiculization rate of the vermicular cast iron solidified sample. Then, the collected stable thermal analysis solidification curve, the corresponding characteristic values TEU, deltaTe and the vermicular rate are stored in a database (the database structure is shown as a figure 3), and the vermicular rate is more than or equal to 80% when the TEU is at 1130-1140 ℃ and the DeltaTe is at 8-18 ℃ and is taken as basic data for judging the production of the vermicular iron brake drum product; by adopting the vermicular iron brake drum molten iron quality management early warning method, whether the characteristic value TEU on the thermal analysis solidification curve of the vermicular iron molten iron to be tested is within the range of 1130-1140 ℃ and delta Te is within the range of 8-18 ℃ is inquired by a computer, and whether an alarm prompt is given or not is judged.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (5)
1. The early warning method of the vermicular brake drum molten iron quality early warning system is characterized in that the early warning system comprises a temperature acquisition module, a conversion module, an industrial control device, a digital I/O module and a display terminal/early warning device, wherein the temperature acquisition module, the conversion module, the industrial control device, the digital I/O module and the display terminal/early warning device are sequentially connected; the temperature acquisition module is used for acquiring signal data of a vermicular/ductile iron molten iron production line site and transmitting the acquired signal data to the industrial personal computer device through the conversion module; the industrial personal computer device is used for judging the received signal data and sending a judgment result to the display terminal/early warning device through the digital I/O module; the display terminal/early warning device is used for displaying the judging result of the industrial personal computer device;
the early warning method of the early warning system comprises the following steps:
s1, collecting a stable standard thermal analysis solidification curve of an existing vermicular brake drum production enterprise by using a special sample cup, and measuring the vermicular rate of a solidified sample of the sample cup;
s2, establishing a database for storing n stable and standard thermal analysis solidification curves and corresponding vermiculizer on an industrial personal computer device according to the standard thermal analysis solidification curves and the vermiculizer of the sample cup solidification samples collected in the step S1, and summarizing the vermiculizer within a certain characteristic parameter range to be used as basic data for judging production of vermicular iron brake drum products;
s3, collecting a solidification curve of the existing iron water sample cup to be tested;
step S4, inquiring whether the characteristic value of the thermal analysis solidification curve of the vermicular cast iron water to be detected is within the range of the characteristic value stored in the step S2 or not through an industrial personal computer device according to the solidification curve of the iron water sample cup to be detected obtained in the step S3, if not, executing the step S5, otherwise, executing the step S6;
s5, a red light of an indicator light of the display terminal/early warning device is turned on to remind workers of quality problems of vermicular iron brake drum molten iron;
and S6, ending.
2. The method for pre-warning the quality of the vermicular cast iron brake drum molten iron according to claim 1, wherein the signal data collected by the temperature collection module are the liquidus temperature TL, the eutectic start temperature TEN, the eutectic minimum temperature TEU, the eutectic maximum temperature TEU, the eutectic rechucking temperature Δte and the eutectic end temperature TS on the thermal analysis solidification curve and the respective temperature characteristic values on the curve.
3. The method for early warning of the quality of the vermicular brake drum molten iron according to claim 1, wherein the judging result of the industrial personal computer device on the received signal data is divided into the following two states, wherein the first state is: the vermicular rate is more than or equal to 80 percent, and meets the production requirements of vermicular brake drum products; second state: the vermiculizer rate is lower than 80 percent, and does not meet the production requirements of vermicular iron brake drum products.
4. The method for early warning the quality of the vermicular cast iron brake drum molten iron according to claim 1, wherein the display terminal/early warning device displays the judging result of the industrial personal computer device through the indicating lamp, and when the judging result is in the second state, the indicating lamp lights a red light and early warns that the vermicular cast iron brake drum product is unqualified.
5. The method for pre-warning the quality of the vermicular cast iron brake drum molten iron according to claim 1, wherein the vermicular rate induced in the certain characteristic parameter range in the step S2 is as follows:
firstly, finding out samples with the vermicular rate of more than or equal to 80% in a database, and then inducing the range of the eutectic minimum temperature TEU and the eutectic re-glow temperature delta Te corresponding to the samples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210856367.8A CN115331406B (en) | 2022-07-21 | 2022-07-21 | Vermicular brake drum molten iron quality early warning system and early warning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210856367.8A CN115331406B (en) | 2022-07-21 | 2022-07-21 | Vermicular brake drum molten iron quality early warning system and early warning method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115331406A CN115331406A (en) | 2022-11-11 |
| CN115331406B true CN115331406B (en) | 2024-02-09 |
Family
ID=83918057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210856367.8A Active CN115331406B (en) | 2022-07-21 | 2022-07-21 | Vermicular brake drum molten iron quality early warning system and early warning method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115331406B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166738A (en) * | 1976-09-09 | 1979-09-04 | Electro-Nite Co. | Method for the treatment of nodular or vermicular cast iron samples |
| US4667725A (en) * | 1984-09-12 | 1987-05-26 | Sinter-Cast Ab | Method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| US5804006A (en) * | 1995-05-16 | 1998-09-08 | Kimura Foundry Co., Ltd. | Method for judging the properties of molten cast iron |
| CN101942598A (en) * | 2010-10-28 | 2011-01-12 | 黄元吉 | Cast iron production process capable of stabilizing high vermicular rate |
| CN102994865A (en) * | 2011-09-15 | 2013-03-27 | 林州市第二铸造有限公司 | Vermicular cast iron brake drum |
| CN104894317A (en) * | 2015-05-18 | 2015-09-09 | 江苏永钢集团有限公司 | Blast furnace tapping prompting early-warning control method |
| CN105331876A (en) * | 2015-11-26 | 2016-02-17 | 成都九十度工业产品设计有限公司 | Intelligent preparation method for low-tin silicon-molybdenum vermicular graphite cast iron |
| CN205133651U (en) * | 2015-10-15 | 2016-04-06 | 杭州谱诚泰迪实业有限公司 | Steelmaking converter stove outer covering temperature and tapping monitoring set composite |
| CN106093114A (en) * | 2016-08-26 | 2016-11-09 | 江铃汽车股份有限公司 | A kind of method of the rotten index span of control quickly determining molten iron compactedization |
| CN108132277A (en) * | 2017-12-26 | 2018-06-08 | 河北工业大学 | A kind of method for predicting hypereutectic composition vermicular cast iron nodulizing rate |
| EP3339848A1 (en) * | 2016-12-23 | 2018-06-27 | Casa Maristas Azterlan | Method to determine the carbon equivalent content of a cast iron alloy having a hypereutectic composition and equipment to carry it out |
| CN111304521A (en) * | 2019-11-06 | 2020-06-19 | 上海金范机械铸造有限公司 | Method for improving purity of nodular cast iron smelting molten iron |
| CN111398341A (en) * | 2020-04-13 | 2020-07-10 | 哈尔滨理工大学 | Multi-characteristic-point thermal analysis evaluation method for vermicular cast iron vermicular effect |
| CN112011664A (en) * | 2020-08-26 | 2020-12-01 | 清华大学 | Furnace-front control method for vermicular cast iron vermicular effect |
| CN113888842A (en) * | 2020-07-02 | 2022-01-04 | 上海宝信软件股份有限公司 | Real-time monitoring and early warning system and method for molten iron desulphurization process flow |
| CN114062418A (en) * | 2022-01-14 | 2022-02-18 | 潍柴动力股份有限公司 | Thermal analysis evaluation method for multiple characteristic points of vermicular cast iron liquid inoculation double-sample cup |
-
2022
- 2022-07-21 CN CN202210856367.8A patent/CN115331406B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166738A (en) * | 1976-09-09 | 1979-09-04 | Electro-Nite Co. | Method for the treatment of nodular or vermicular cast iron samples |
| US4667725A (en) * | 1984-09-12 | 1987-05-26 | Sinter-Cast Ab | Method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| US5804006A (en) * | 1995-05-16 | 1998-09-08 | Kimura Foundry Co., Ltd. | Method for judging the properties of molten cast iron |
| CN101942598A (en) * | 2010-10-28 | 2011-01-12 | 黄元吉 | Cast iron production process capable of stabilizing high vermicular rate |
| CN102994865A (en) * | 2011-09-15 | 2013-03-27 | 林州市第二铸造有限公司 | Vermicular cast iron brake drum |
| CN104894317A (en) * | 2015-05-18 | 2015-09-09 | 江苏永钢集团有限公司 | Blast furnace tapping prompting early-warning control method |
| CN205133651U (en) * | 2015-10-15 | 2016-04-06 | 杭州谱诚泰迪实业有限公司 | Steelmaking converter stove outer covering temperature and tapping monitoring set composite |
| CN105331876A (en) * | 2015-11-26 | 2016-02-17 | 成都九十度工业产品设计有限公司 | Intelligent preparation method for low-tin silicon-molybdenum vermicular graphite cast iron |
| CN106093114A (en) * | 2016-08-26 | 2016-11-09 | 江铃汽车股份有限公司 | A kind of method of the rotten index span of control quickly determining molten iron compactedization |
| EP3339848A1 (en) * | 2016-12-23 | 2018-06-27 | Casa Maristas Azterlan | Method to determine the carbon equivalent content of a cast iron alloy having a hypereutectic composition and equipment to carry it out |
| CN108132277A (en) * | 2017-12-26 | 2018-06-08 | 河北工业大学 | A kind of method for predicting hypereutectic composition vermicular cast iron nodulizing rate |
| CN111304521A (en) * | 2019-11-06 | 2020-06-19 | 上海金范机械铸造有限公司 | Method for improving purity of nodular cast iron smelting molten iron |
| CN111398341A (en) * | 2020-04-13 | 2020-07-10 | 哈尔滨理工大学 | Multi-characteristic-point thermal analysis evaluation method for vermicular cast iron vermicular effect |
| CN113888842A (en) * | 2020-07-02 | 2022-01-04 | 上海宝信软件股份有限公司 | Real-time monitoring and early warning system and method for molten iron desulphurization process flow |
| CN112011664A (en) * | 2020-08-26 | 2020-12-01 | 清华大学 | Furnace-front control method for vermicular cast iron vermicular effect |
| CN114062418A (en) * | 2022-01-14 | 2022-02-18 | 潍柴动力股份有限公司 | Thermal analysis evaluation method for multiple characteristic points of vermicular cast iron liquid inoculation double-sample cup |
Non-Patent Citations (1)
| Title |
|---|
| 热分析特征值对蠕墨铸铁蠕化率的影响;赵玉厚，杨喜岗，杨忠等;西安工业大学学报;第35卷(第8期);642-647 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115331406A (en) | 2022-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104357735A (en) | High-chromium cast iron and preparation method thereof | |
| CN110894582B (en) | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof | |
| CN103320680A (en) | Nodular cast iron and preparation method thereof | |
| CN103820704A (en) | High-nickel austenitic nodular cast iron material for automobile turbine housing and preparation method for high-nickel austenitic nodular cast iron material | |
| CN110373601A (en) | A kind of preparation method of the material suitable for diesel engine cylinder cover | |
| CN102115801B (en) | Method for producing high-quality spheroidal graphite cast iron and spheroidal graphite cast iron prepared thereby | |
| CN115331406B (en) | Vermicular brake drum molten iron quality early warning system and early warning method thereof | |
| CN103938067A (en) | CGI cast iron applied to cylinder block of diesel engines with high output and production method for the same | |
| CN108998617B (en) | Method for controlling nodularity of nodular cast iron | |
| CN111809014A (en) | Method for smelting heterogeneous cast iron by medium-frequency electric furnace in same furnace | |
| CN102888484A (en) | Method for producing high-strength cast iron by using waste iron and steel | |
| CN102851571A (en) | Low-temperature-resistant and high-toughness nodular cast iron and preparation method thereof | |
| CN107475604A (en) | A kind of high ferro steel backing material and preparation method thereof | |
| CN111850385A (en) | Silicon-molybdenum turbocharger shell and preparation method thereof | |
| CN106811685A (en) | A kind of smelting process of low-carbon high-manganese steel | |
| CN113362903B (en) | Method for intelligently adding lime in TSC (thyristor switched capacitor) stage of large converter | |
| CN111304521A (en) | Method for improving purity of nodular cast iron smelting molten iron | |
| CN112063913A (en) | Method for producing ductile iron casting by using scrap steel | |
| US20220325390A1 (en) | Method for controlling amount of silicon added to ductile cast iron, method for casting ductile cast iron, and cast product | |
| CN109306430A (en) | A kind of casting technique of thermal crack resistant vermicular cast iron brake disc | |
| CN115627412A (en) | Synthetic cast iron produced by using low-alloy scrap steel and method | |
| CN114855069B (en) | High-temperature-resistant niobium-containing vermicular graphite cast iron and preparation method thereof | |
| CN116590600B (en) | European standard high-strength steel rail smelting method | |
| EP2749657B1 (en) | Method for controlling active magnesium in ductile cast iron | |
| CN114438273B (en) | Spheroidizing inoculation complexing agent, preparation method and application thereof, and preparation process of spheroidal graphite cast iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |