LU505374B1 - Production process of spacer block material for heating section of steel rolling heating furnace - Google Patents
Production process of spacer block material for heating section of steel rolling heating furnace Download PDFInfo
- Publication number
- LU505374B1 LU505374B1 LU505374A LU505374A LU505374B1 LU 505374 B1 LU505374 B1 LU 505374B1 LU 505374 A LU505374 A LU 505374A LU 505374 A LU505374 A LU 505374A LU 505374 B1 LU505374 B1 LU 505374B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- silicon
- furnace
- molybdenum
- manganese
- tungsten
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 title claims abstract description 20
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 12
- 239000010959 steel Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005096 rolling process Methods 0.000 title claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000011651 chromium Substances 0.000 claims abstract description 33
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 29
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 26
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 20
- 239000011572 manganese Substances 0.000 claims abstract description 20
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 20
- 239000011733 molybdenum Substances 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 20
- 239000010937 tungsten Substances 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 12
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 12
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000010079 rubber tapping Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 229910000882 Ca alloy Inorganic materials 0.000 claims description 10
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 10
- 239000003607 modifier Substances 0.000 claims description 10
- 229910052727 yttrium Inorganic materials 0.000 claims description 10
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 6
- 238000005495 investment casting Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 claims 1
- 229910000531 Co alloy Inorganic materials 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to the technical field of steel production, and is a production process of a spacer block material for the heating section of a steel rolling heating furnace, comprising taking silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, sequentially adding the raw material into a medium-frequency induction furnace, melting at high temperature, and pouring, wherein silicon Si is 0.6/1.00, manganese Mn is 0.4/0.50, molybdenum Mo is 2.5/4.5, tungsten W is 5.0/7.0, iron Fe is 7.0/11.0, and the rest is chromium Cr, as a matrix. The high-temperature new spacer block material HHSW of the invention has a melting point of 1,650℃, the material basically has no plastic deformation before the melting point, the oxidation resistance is improved, the limit service temperature can reach 1,500℃, and the maximum bearing capacity is 4.5 times that of the traditional cobalt alloy.
Description
PRODUCTION PROCESS OF SPACER BLOCK MATERIAL FOR 505974
HEATING SECTION OF STEEL ROLLING HEATING FURNACE
The invention relates to the technical field of steel production, and is a production process of spacer block.
At present, the spacer block material in the high-temperature heating section of pusher-type heating furnace and walking-beam heating furnace is mainly Co50, with a melting point of 1380°C-1420°C and a maximum service strength of 0.1 kg/mm at 1200°C. The main reason for the blank damage of the spacer block of heating furnace is not caused by wear, ablation and oxidation. The main reason for the damage of the spacer block is that it is crushed by the billet. Not all the spacer blocks in the heating furnace bear pressure. In the design, it is considered that all the spacer blocks bear pressure. Because the spacer blocks bear pressure exceeding its maximum service strength, the surface of the spacer block is plastically deformed and pits appear, and the oxide scales falling off the billet gather in the pits and grow rapidly. These protruding scales will push out pits on the lower surface of the billet, and it is difficult for high-pressure water to remove the scales in the pits when the billet enters the rolling process, which will lead to quality problems of hot rolled products and affect the quality of cold rolled products in the later period.
In order to solve this problem, by adding a large amount of W(>10%wt) to the cobalt alloy, the melting point of the alloy is increased by about 40-50°C, and the performance is greatly improved, and the application effect is good. However, because the body is still austenite, plastic deformation will still occur at high temperature, and a new material is urgently needed, which makes it have high hardness, strength and wear resistance at high temperature.
SUMMARY LU505374
The purpose of the invention is to provide a production process of a spacer block material for the heating section of a steel rolling heating furnace with high hardness and strong wear resistance.
The technical problem is solved by adopting silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and completing the operation through the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 25-35% in an intermediate frequency induction furnace (with argon protection), adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting; (2) before tapping, sampling and testing the chemical composition in front of the furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 600-630°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 1-2%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, adopting in-ladle modification treatment by using heavy yttrium (Y) modifier, at the same time, placing the precision casting formwork on a high-frequency vibration platform, and the vibration frequency f is more than or equal to 20kHf, and the pour temperature is 1780-1800°C; wherein in step (2), carbon C<0.08, phosphorus P< 0.020, sulfur S<0.020, silicon Si is 0.6/1.00, manganese Mn is 0.4/0.50, molybdenum Mo is 2.5/4.5, tungsten W is 5.0/7.0, iron Fe 1s 7.0/11.0 and the rest is chromium Cr, as the matrix, the above-mentioned parts are parts by weight, and calculated according to the total parts of 100 parts, manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
The silicon-calcium alloy deoxidizer is deoxidized in the furnace, and the silicon-calcium alloy deoxidizer is pressed into the bottom of the melting furnace by a bell jar method, so that the alloy in the furnace is fully deoxidized.
Specific physical performance parameters are as follows. 505974
The high-temperature new material spacer block material HHSW of the invention has a melting point of 1,650°C, the material basically has no plastic deformation before the melting point, the oxidation resistance is improved, the limit service temperature can reach 1,500°C, and the maximum bearing capacity is 4.5 times that of the traditional cobalt alloy.
Embodiment 1
The invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and completes the operation through the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 30% in an intermediate frequency induction furnace with argon protection in sequence, adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting; (2) before tapping, sampling and testing the chemical composition in front of the furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 610°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 2%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, adopting in-ladle modification treatment by using heavy yttrium (Y) modifier, at the same time, placing the precision casting formwork on a high-frequency vibration platform, vibrating and pouring (vibration frequency), and the pour temperature is 1780-1800°C; wherein in step (2), carbon
C<0.08, phosphorus P< 0.020, sulfur S<0.020, silicon Si is 0.8, manganese Mn is 0.4, molybdenum Mo is 3.5, tungsten W is 6, iron Fe is 9.0 and the rest is chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Embodiment 2 505974
The invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and completes the operation through the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 25% in an intermediate frequency induction furnace with argon protection in sequence, adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting; (2) before tapping, sampling and testing the chemical composition in front of the furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 630°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 1%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, adopting in-ladle modification treatment by using heavy yttrium (Y) modifier, at the same time, placing the precision casting formwork on a high-frequency vibration platform, vibrating and pouring (vibration frequency), and the pour temperature is 1780°C; wherein in step (2), carbon C<0.08, phosphorus P<0.020, sulfur S<0.020, silicon Si is 1.0, manganese Mn is 0.4, molybdenum Mo is 4.5, tungsten W is 5.0, iron Fe is 11.0 and the rest is chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Embodiment 3
The invention uses silicon, manganese, molybdenum, tungsten, iron and chromium as raw materials, and completes the operation through the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 35% in an intermediate frequency induction furnace with argon protection in sequence, adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting;
(2) before tapping, sampling and testing the chemical composition in front of the 505974 furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 600°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for 5 deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 2%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, adopting in-ladle modification treatment by using heavy yttrium (Y) modifier, at the same time, placing the precision casting formwork on a high-frequency vibration platform, vibrating and pouring (vibration frequency), and the pour temperature is 1780-1800°C; wherein in step (2), carbon
C<0.08, phosphorus P< 0.020, sulfur S<0.020, silicon Si is 0.6, manganese Mn is 0.5, molybdenum Mo is 2.5, tungsten W is 7.0, iron Fe is 7.0 and the rest is chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Claims (3)
1. A production process of spacer block material for heating section of steel rolling heating furnace, wherein silicon, manganese, molybdenum, tungsten, iron and chromium are used as raw materials, comprising the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 25-35% in an intermediate frequency induction furnace with argon protection in sequence, adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting; (2) before tapping, sampling and testing the chemical composition in front of the furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 600-630°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 1-2%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, carrying out in-ladle modification, placing the precision casting formwork on a high-frequency vibration platform at the same time, wherein the vibration frequency f is more than or equal to 20kHf, and the pour temperature is 1780-1800°C; wherein in step (2), carbon C<0.08, phosphorus P<
0.020, sulfur S<0.020, silicon Si is 0.6/1.00, manganese Mn is 0.4/0.50, molybdenum Mo is 2.5/4.5, tungsten W is 5.0/7.0, iron Fe is 7.0/11.0 and the rest is chromium Cr, as the matrix, the above-mentioned parts are parts by weight, and are calculated according to the total parts of 100 parts, manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
2. The production process of spacer block material according to claim 1, wherein the silicon-calcium alloy deoxidizer is deoxidized in the furnace, and the silicon-calcium alloy deoxidizer is pressed into the bottom of the smelting furnace by the bell jar method.
3. The production process of spacer block material according to claim 1, wherein 505974 silicon, manganese, molybdenum, tungsten, iron and chromium are used as raw materials, comprising the following steps: (1) adding pure iron, tungsten, molybdenum and metallic chromium with a total weight of 30% in an intermediate frequency induction furnace with argon protection in sequence, adding the remaining metallic chromium after the materials begin to melt, heating to 1800°C, adding ferromanganese and ferrosilicon, and melting; (2) before tapping, sampling and testing the chemical composition in front of the furnace, and fine-tuning according to the test results until the composition is qualified; (3) baking the casting ladle to 610°C; (4) adding a silicon-calcium alloy deoxidizer with a total weight of 2% for deoxidation in the furnace, raising the temperature to 1900°C, tapping, standing the molten steel before pouring, removing slag on the liquid surface, adding a massive heavy yttrium modifier with a total weight of 2%o to the bottom of the casting ladle, wherein the particle size is 6-10mm, carrying out in-ladle modification, placing the precision casting formwork on a high-frequency vibration platform at the same time, vibrating and pouring (vibration frequency), wherein the pour temperature is 1780-1800°C; wherein in step (2), carbon C<0.08, phosphorus P< 0.020, sulfur
S<0.020, silicon Si is 0.8, manganese Mn is 0.4, molybdenum Mo is 3.5, tungsten W is 6, iron Fe is 9.0 and the rest is chromium Cr, and manganese and silicon exist in the state of ferromanganese and ferrosilicon in the raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU505374A LU505374B1 (en) | 2023-10-26 | 2023-10-26 | Production process of spacer block material for heating section of steel rolling heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU505374A LU505374B1 (en) | 2023-10-26 | 2023-10-26 | Production process of spacer block material for heating section of steel rolling heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU505374B1 true LU505374B1 (en) | 2024-04-26 |
Family
ID=90885781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU505374A LU505374B1 (en) | 2023-10-26 | 2023-10-26 | Production process of spacer block material for heating section of steel rolling heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU505374B1 (en) |
-
2023
- 2023-10-26 LU LU505374A patent/LU505374B1/en active IP Right Grant
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| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20240426 |