CN103993239A - Mine wet mill liner and making method thereof - Google Patents
Mine wet mill liner and making method thereof Download PDFInfo
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- CN103993239A CN103993239A CN201410166876.3A CN201410166876A CN103993239A CN 103993239 A CN103993239 A CN 103993239A CN 201410166876 A CN201410166876 A CN 201410166876A CN 103993239 A CN103993239 A CN 103993239A
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Abstract
The invention relates to the technical field of wear resistant metal materials, and discloses a mine wet mill liner and a making method thereof. The liner comprises 0.10-0.3wt% of C, 0.2-0.6wt% of Si, 0.3-1wt% of Mn, 7-10wt% of Cr, 0.7-1wt% of Mo, 1.5-2wt% of Ni, 0.1-0.18wt% of Ti, 0.005-0.03wt% of S, 0.005-0.03wt% of P, 0.01-0.025wt% of RE, and the balance Fe. The mine wet mill liner has the advantages of very long service life, improved wear resistance, substantially improved impact toughness, meeting of the impact resistance of a mine wet mill liner, very high strength and hardness, reduction of the liner replacement frequency of a factory, labor intensity reduction, easily available raw materials, simple preparation method and effective energy saving.
Description
Technical field
The present invention relates to wear-resistant metal material technical field, refer more particularly to a kind of mine wet method lining board of grinder and preparation method thereof.
Background technology
Metallurgical mine wet method lining board of grinder, applying working condition inclement condition, is not only subject to corrosion but also is hit and weares and teares.Numerous research points out, under hygrometric state, particularly, in corrosive medium, the wear rate of same material is the several times under dry state.Hygrometric state corrosive wear is not the stack of pure wearing and tearing and pure corrosion, but has the complex process of mutual booster action.Known according to analyzing, the failure cause 85% that grinds disintegrating apparatus is due to wearing and tearing, and wherein 50% because abrasive wear causes, and abrasive wear is the most general and most important reason that causes wear out failure.Wearing and tearing are a kind of properties of system, and it depends on member and the interaction situation of material under various loads that all participations are worn and torn.
Most wet method lining board of grinder is taking high mangaenese steel as main, and part is used steel alloy.High mangaenese steel initial hardness is low, produce work hardening by HI high impact and ensure wear resistance, and most of liner plate shock peening speed is lower than the rate of wear of liner plate, so liner plate wear resistance also can reduce greatly, in addition, the yield strength of high mangaenese steel is low, easily produces viscous deformation in use, make the workpiece life-span short, and dismounting and change difficulty.Large complex alloy steel liner plate metallographic structure is tempered martensite, there is higher hardness and high tenacity, reach the requirement compared with high-wearing feature, but for client, to wear resistance, higher requirement is difficult to reach, particularly the aside-liner degree of wear is more serious than liner plate, this just need to the material higher than liner plate wear resistance meets the requirement of aside-liner wear resistance, otherwise, in the use of a whole set of lining board of grinder, shell liner also can use often, and aside-liner has needed to change, make whole lining board of grinder because work-ing life is different and bring repeatedly to shut down to client and change aside-liner, affect client's production efficiency.For extending liner plate work-ing life, improve large-sized grinder operation factor, further improve Business Economic Benefit, research not only wear-resisting but also reliably lining material probe into development work necessary.
Chinese patent CN102719748A discloses a kind of tube mill lining board and manufacture method thereof, it is characterized in that, the material of liner plate comprises the component of following mass percent substantially: carbon: 0.34%～0.38%, silicon: 0.7%～1.0%, manganese: 0.5%～0.9%, chromium: 5.0%～7.0%, copper: 0.2%～0.3%, vanadium: 0.05%～0.12%, sulphur :≤0.025%, phosphorus :≤0.030%, rare earth: 0.01%～0.03%, surplus is iron.This invention is by the optimization design to tube mill lining board chemical composition and thermal treatment process, and liner plate is produced need not valuable iron alloy, and cost is low, and has good toughness, hardness is high, section difference of hardness is little, wear resistance is excellent feature.But the tube mill lining board corrosion-resistant of this invention, is not suitable for the wet mill of metallurgical mine.
Summary of the invention
It is large that technical problem to be solved by this invention is to provide a kind of intensity, and wear resistance is good, mine wet method lining board of grinder that erosion resistance is good and preparation method thereof.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of mine wet method lining board of grinder, is characterized in that, comprises the chemical composition of following weight part: carbon 0.10-0.3%, silicon 0.2-0.6%, manganese 0.3-1%, chromium 7-10%, molybdenum 0.7-1%, nickel 1.5-2%, titanium 0.1-0.18%, sulphur 0.005-0.03%, phosphorus 0.005-0.03%, RE0.01-0.025%, surplus is iron.
Preferably, described mine wet method lining board of grinder comprises the chemical composition of following weight part: carbon 0.15-0.3%, silicon 0.3-0.6%, manganese 0.5-1%, chromium 7-10%, molybdenum 0.7-1%, nickel 1.5-2%, titanium 0.13-0.18%, sulphur 0.005-0.03%, phosphorus 0.005-0.03%, RE0.01-0.025%, surplus is iron.
A preparation method for mine wet method lining board of grinder, is characterized in that, comprises the following steps:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, temperature is risen to 1450-1550 DEG C, the front ferromanganese of preheating, the ferrosilicon of adding for 10 minutes that tap a blast furnace carries out bulk deoxidation, adjusting component, add afterwards the cobalt plate of preheating, in the time that molten iron temperature reaches 1520-1550 DEG C, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation;
(2) cast: alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to molten steel processings of go bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1440-1460 DEG C, cast first slowly, in fast, rear carefully;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 950-1050 DEG C, be incubated after 1.8-2 hours, air blast quenching, then 250-300 DEG C of tempering 2-2.2 hours, taking-up naturally cooling.
Preferably, the alterant in described step (2) is rare earth.
Preferably, described step (2) mesometamorphism agent is the fritter that is less than 45mm through being crushed to granularity, dries the material of gained at 200 DEG C.
Preferably, described step (2) mesometamorphism is processed to adopt in bag and is poured method to the molten steel processing of going bad.
Preferably, in described step (2), cast adopts bottom pouring cast steel ingot.
The Main Function of carbon and chromium is to ensure carbon in cast iron compound quantity and form.Along with the raising of carbon content, carbide increases; Along with the increase of Cr/C ratio, the pattern of eutectic carbides has experienced by the process that continuous net-shaped → sheet → shaft-like continuity degree reduces, and eutectic carbides crystal type experience is by the change procedure of M3C → M3C+M7C3 → M7C3.There is data to point out: when eutectic carbides is constant, and Cr/C is while being 6.6-7.1, the strongest with the failure crack extended capability of chrome cast iron.According to these principles, C amount should be decided to be to 3.1-3.6%, Cr amount is 20-25%.Cr in matrix can also improve the hardening capacity of material.The effect of nickel is the hardening capacity that increases rich chromium cast iron, suppresses austenitic matrix to pearlitic transformation, promotes the formation of martensite base.
Shape, size, distribution and the quantity of steel inclusion, particularly sulfide seriously affects the performance of steel, especially plasticity and toughness.Without the medium high carbon alloy steel of RE Modified processing, inclusion mostly is long strip shape and with corner angle, and the amount of inclusions is more, and fracture mode is quasi-cleavage crack.Rare earth adds the effect in steel with desulfurization, degasification, the thermodynamic condition and the application practice that generate according to re inclusion, the avidity of rare earth element and oxygen and sulphur is significantly greater than manganese and aluminium etc., rare earth element easily and oxygen, sulphur generation conjugation reaction, generate the re inclusions such as globular RE2O2S, RE2S3, improved significantly the brittle rupture that medium high carbon Low Alloying Multicomponent Steels produces along crystal boundary.Therefore, after RE Modified is processed, the amount of inclusions obviously reduces, and inclusion is tending towards nodularization and is evenly distributed in steel, and the toughness of steel is improved, and on impact fracture, will occur a large amount of dimples.But excessive rare earth adds membership causes re inclusion to be broken chain distribution, damages on the contrary plasticity and the toughness of steel.
Rare earth has larger atomic radius, and in iron, solubleness is very little.Owing to having very large electronegativity, therefore their chemical property is very active, can in steel, form a series of very stable compounds, becomes non-spontaneous crystallization core, thereby plays the effect of crystal grain thinning.In addition, rare earth is surface active element, can increase crystallization nuclei and produce speed, stops grain growing.The refinement of crystal grain, is conducive to the raising of steel plasticity and toughness.Along with the increase of content of rare earth, grain refining is more obvious, and this is relevant with the intensity of activation that rare earth element can increase austenite grain boundary migration.
Work-ing life of the present invention is very long, in improving wear resistance, impact toughness also improves greatly, meet wear resistance and the erosion resistance of mine wet method lining board of grinder, there are very high intensity and hardness, reduce the frequency of factory's replacing liner plate, reduced labour intensity, raw material of the present invention is easy to get, and making method is simple, use ordinary scrap steel, the pig iron, stainless steel waste material as raw materials for production, recycle, has effectively saved the energy, to the molten steel processing of going bad, the toughness and the intensity that have increased liner plate, improved work-ing life.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is further described in detail.
Embodiment mono-:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, temperature is risen to 1550 DEG C, the front ferromanganese of preheating, the ferrosilicon of adding for 10 minutes that tap a blast furnace carries out bulk deoxidation, adjusting component, add afterwards the cobalt plate of preheating, in the time that molten iron temperature reaches 1550 DEG C, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation;
(2) cast: alterant rare earth is crushed to the fritter that granularity is less than 45mm, after 200 DEG C of following oven dry, parcel is placed in to ladle bottom with iron sheet or masking foil, by the method that pours in bag to the molten steel processing of going bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1460 DEG C, cast first slow, in fast, rear thin, adopt bottom pouring cast steel ingot;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 1050 DEG C, be incubated after 2 hours, air blast quenching, then 300 DEG C of tempering 2.2 hours, taking-up naturally cooling; The final each chemical component weight per-cent of gained liner plate is carbon 0.3%, silicon 0.6%, and manganese 1%, chromium 10%, molybdenum 1%, nickel 2%, titanium 0.18%, sulphur 0.03%, phosphorus 0.03%, RE0.025%, surplus is iron.
Embodiment bis-:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, ferromanganese, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, after adjusting component is qualified, temperature is risen to 1300 DEG C, add ferrosilicon to carry out bulk deoxidation, tap a blast furnace and within first 5 minutes, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation, then tap a blast furnace;
(2) cast: alterant rare earth is crushed to the fritter that granularity is less than 45mm, after drying at 200 DEG C, parcel is placed in to ladle bottom with iron sheet or masking foil, by the method that pours in bag to the molten steel processing of going bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1440 DEG C, cast first slow, in fast, rear thin, adopt bottom pouring cast steel ingot;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 950 DEG C, be incubated after 1.8 hours, air blast quenching, then 250 DEG C of tempering 2 hours, taking-up naturally cooling; The final each chemical component weight per-cent of gained liner plate is carbon 0.15%, silicon 0.3%, and manganese 0.5%, chromium 7%, molybdenum 0.7%, nickel 1.5%, titanium 0.13%, sulphur 0.005%, phosphorus 0.005%, RE0.015%, surplus is iron.
Embodiment tri-:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, ferromanganese, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, after adjusting component is qualified, temperature is risen to 1350 DEG C, add the ferrosilicon of preheating to carry out bulk deoxidation, tap a blast furnace and within first 5 minutes, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation, then tap a blast furnace;
(2) cast: alterant rare earth is crushed to the fritter that granularity is less than 45mm, after drying at 200 DEG C, parcel is placed in to ladle bottom with iron sheet or masking foil, by the method that pours in bag to the molten steel processing of going bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1450 DEG C, cast first slow, in fast, rear thin, adopt bottom pouring cast steel ingot;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 1000 DEG C, be incubated after 1.9 hours, air blast quenching, then 280 DEG C of tempering 2.1 hours, taking-up naturally cooling; The final each chemical component weight per-cent of gained liner plate is carbon 0.2%, silicon 0.5%, and manganese 0.7%, chromium 8%, molybdenum 0.8%, nickel 1.7%, titanium 0.15%, sulphur 0.025%, phosphorus 0.025%, RE0.020%, surplus is iron.
Embodiment tetra-:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, ferromanganese, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, after adjusting component is qualified, temperature is risen to 1400 DEG C, add the ferrosilicon of preheating to carry out bulk deoxidation, tap a blast furnace and within first 5 minutes, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation, then tap a blast furnace;
(2) cast: alterant rare earth is crushed to the fritter that granularity is less than 45mm, after 200 DEG C of following oven dry, parcel is placed in to ladle bottom with iron sheet or masking foil, by the method that pours in bag to the molten steel processing of going bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1445 DEG C, cast first slow, in fast, rear thin, adopt bottom pouring cast steel ingot;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 990 DEG C, be incubated after 2 hours, air blast quenching, then 290 DEG C of tempering 2 hours, taking-up naturally cooling; The final each chemical component weight per-cent of gained liner plate is carbon 0.20%, silicon 0.4%, and manganese 0.9%, chromium 9%, molybdenum 0.9%, nickel 1.9%, titanium 0.17%, sulphur 0.02%, phosphorus 0.02%, RE0.015%, surplus is iron.
Embodiment five:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, ferromanganese, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, after adjusting component is qualified, temperature is risen to 1390 DEG C, add the ferrosilicon of preheating to carry out bulk deoxidation, tap a blast furnace and within first 5 minutes, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation, then tap a blast furnace;
(2) cast: alterant rare earth is crushed to the fritter that granularity is less than 45mm, after drying at 200 DEG C, parcel is placed in to ladle bottom with iron sheet or masking foil, by the method that pours in bag to the molten steel processing of going bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1459 DEG C, cast first slow, in fast, rear thin, adopt bottom pouring cast steel ingot;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 1040 DEG C, be incubated after 1.9 hours, air blast quenching, then 260 DEG C of tempering 2.1 hours, taking-up naturally cooling; The final each chemical component weight per-cent of gained liner plate is carbon 0.28%, silicon 0.5%, and manganese 0.6%, chromium 8%, molybdenum 0.8%, nickel 16%, titanium 0.14%, sulphur 0.01%, phosphorus 0.01%, RE0.01%, surplus is iron.
For further illustrating performance of the present invention, the present invention and existing lining board of grinder have been made to contrast, as following table:
Work-ing life of the present invention is very long, in improving wear resistance, impact toughness also improves greatly, meet wear resistance and the erosion resistance of mine wet method lining board of grinder, there are very high intensity and hardness, reduce the frequency of factory's replacing liner plate, reduced labour intensity, raw material of the present invention is easy to get, and making method is simple, use ordinary scrap steel, the pig iron, stainless steel waste material as raw materials for production, recycle, has effectively saved the energy, to the molten steel processing of going bad, the toughness and the intensity that have increased liner plate, improved work-ing life.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. a mine wet method lining board of grinder, is characterized in that, comprises the chemical composition of following weight percent: carbon 0.10-0.3%, silicon 0.2-0.6%, manganese 0.3-1%, chromium 7-10%, molybdenum 0.7-1%, nickel 1.5-2%, titanium 0.1-0.18%, sulphur 0.005-0.03%, phosphorus 0.005-0.03%, RE0.01-0.025%, surplus is iron.
2. mine according to claim 1 wet method lining board of grinder, is characterized in that, comprises the chemical composition of following weight percent: carbon 0.15-0.3%, silicon 0.3-0.6%, manganese 0.5-1%, chromium 7-10%, molybdenum 0.7-1%, nickel 1.5-2%, titanium 0.13-0.18%, sulphur 0.005-0.03%, phosphorus 0.005-0.03%, RE0.01-0.025%, surplus is iron.
3. a preparation method for the mine wet method lining board of grinder described in one of claim 1 to 2, is characterized in that, comprises the following steps:
(1) refining is molten: clean dry ordinary scrap steel, the pig iron, stainless steel waste material, molybdenum-iron, nickel plate, carburetting is added in furnace with spent cathodes, heat fused, temperature is risen to 1450-1550 DEG C, the front ferromanganese of preheating, the ferrosilicon of adding for 10 minutes that tap a blast furnace carries out bulk deoxidation, adjusting component, add afterwards the cobalt plate of preheating, in the time that molten iron temperature reaches 1520-1550 DEG C, adopt dark method of inserting aluminium wire to carry out diffusive deoxidation;
(2) rotten processing and cast: alterant is placed in to ladle bottom with iron sheet or masking foil by parcel, to molten steel processings of go bad, then molten steel is poured in ingot mold, pouring molten steel temperature is at 1440-1460 DEG C, cast first slowly, in fast, rear carefully;
(3) casting mold: in the time that liner plate is cooled to room temperature, cleaning polishes off overlap and the burr on sample;
(4) quench and temper: liner plate is put in heat treatment furnace, and holding temperature, at 950-1050 DEG C, be incubated after 1.8-2 hours, air blast quenching, then 250-300 DEG C of tempering 2-2.2 hours, taking-up naturally cooling.
4. the preparation method of mine according to claim 3 wet method lining board of grinder, is characterized in that, the alterant in described step (2) is rare earth.
5. the preparation method of mine according to claim 3 wet method lining board of grinder, is characterized in that, described step (2) mesometamorphism agent is the fritter that is less than 45mm through being crushed to granularity, dries the material of gained at 200 DEG C.
6. the preparation method of mine according to claim 3 wet method lining board of grinder, is characterized in that, described step (2) mesometamorphism is processed to adopt in bag and poured method to the molten steel processing of going bad.
7. the preparation method of mine according to claim 3 wet method lining board of grinder, is characterized in that, in described step (2), cast adopts bottom pouring cast steel ingot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410166876.3A CN103993239A (en) | 2014-04-23 | 2014-04-23 | Mine wet mill liner and making method thereof |
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| CN201410166876.3A CN103993239A (en) | 2014-04-23 | 2014-04-23 | Mine wet mill liner and making method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532130A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | High-strength and toughness anticorrosive lining plate for wet ball mill and preparation method |
| CN105396688A (en) * | 2015-11-30 | 2016-03-16 | 成都德善能科技有限公司 | Electromagnetic ore separator |
| CN107312965A (en) * | 2017-07-05 | 2017-11-03 | 天长市兴宇铸造有限公司 | A kind of method of smelting of alloy Investment Steel Castings |
| CN114032438A (en) * | 2021-11-15 | 2022-02-11 | 衢州东方特钢有限公司 | Preparation method of low-alloy wear-resistant steel |
| CN115595513A (en) * | 2022-10-26 | 2023-01-13 | 江西铜业集团（德兴）铸造有限公司（Cn） | Novel spiral high-chromium vertical mill lining plate and manufacturing method thereof |
| CN116815073A (en) * | 2023-08-28 | 2023-09-29 | 张家港荣盛特钢有限公司 | Ultra-high strength fastener, wire rod for ultra-high strength fastener and production method thereof |
| CN117127113A (en) * | 2023-10-26 | 2023-11-28 | 江苏省沙钢钢铁研究院有限公司 | Side guide plate lining plate for hot continuous rolling and production method thereof |
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| JP2002155341A (en) * | 2000-11-14 | 2002-05-31 | Nippon Steel Corp | Corrosion resistant steel having excellent carbon dioxide gas corrosion resistance and weld zone toughness, and corrosion resistant line pipe using the steel |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532130A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | High-strength and toughness anticorrosive lining plate for wet ball mill and preparation method |
| CN105396688A (en) * | 2015-11-30 | 2016-03-16 | 成都德善能科技有限公司 | Electromagnetic ore separator |
| CN105396688B (en) * | 2015-11-30 | 2017-06-06 | 永春聚发工艺品有限公司 | electromagnetic ore separator |
| CN107312965A (en) * | 2017-07-05 | 2017-11-03 | 天长市兴宇铸造有限公司 | A kind of method of smelting of alloy Investment Steel Castings |
| CN114032438A (en) * | 2021-11-15 | 2022-02-11 | 衢州东方特钢有限公司 | Preparation method of low-alloy wear-resistant steel |
| CN115595513A (en) * | 2022-10-26 | 2023-01-13 | 江西铜业集团（德兴）铸造有限公司（Cn） | Novel spiral high-chromium vertical mill lining plate and manufacturing method thereof |
| CN116815073A (en) * | 2023-08-28 | 2023-09-29 | 张家港荣盛特钢有限公司 | Ultra-high strength fastener, wire rod for ultra-high strength fastener and production method thereof |
| CN116815073B (en) * | 2023-08-28 | 2023-12-08 | 张家港荣盛特钢有限公司 | Ultra-high strength fastener, wire rod for ultra-high strength fastener and production method thereof |
| CN117127113A (en) * | 2023-10-26 | 2023-11-28 | 江苏省沙钢钢铁研究院有限公司 | Side guide plate lining plate for hot continuous rolling and production method thereof |
| CN117127113B (en) * | 2023-10-26 | 2024-01-26 | 江苏省沙钢钢铁研究院有限公司 | Side guide plate lining plate for hot continuous rolling and production method thereof |
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