CN112442698A - Special steel strip production process - Google Patents
Special steel strip production process Download PDFInfo
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- CN112442698A CN112442698A CN202011318733.1A CN202011318733A CN112442698A CN 112442698 A CN112442698 A CN 112442698A CN 202011318733 A CN202011318733 A CN 202011318733A CN 112442698 A CN112442698 A CN 112442698A
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- strip
- pickling
- special steel
- production process
- steel strip
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/029—Associated apparatus, e.g. for pretreating or after-treating for removing the pickling fluid from the objects
Abstract
The invention provides a production process of a special steel strip. The production process of the special steel strip comprises the following steps: s1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured; s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling; s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished; s4: and flattening, namely mechanically flattening the strip steel raw material washed by clear water by adopting a flattening machine. The special steel strip production process achieves the purpose of systematically showing the detailed production process of the special steel strip, is simple and easy to operate, and simultaneously carries out detailed systematic treatment on pollution sources which are easy to generate in the process, thereby avoiding environmental pollution, reducing production noise and optimizing the production environment.
Description
Technical Field
The invention relates to the field of steel strip production, in particular to a special steel strip production process.
Background
The special steel is also called alloy steel, and is a kind of steel. The special steel is made up by adding one or several alloy elements into carbon steel in a proper quantity to change the structure of steel, so that the steel has various special properties.
At present, a process for manufacturing special steel strips aiming at steel strips does not exist in the market, and the traditional special steel manufacturing process is not completely suitable for manufacturing the special steel strips, so that the existing processing process is complicated and is not easy to implement.
Therefore, it is necessary to provide a special steel strip production process to solve the above technical problems.
Disclosure of Invention
The invention provides a special steel strip production process, which solves the problems that no process for manufacturing a special steel strip by using a steel strip exists in the market at present, and the conventional special steel manufacturing process is not completely suitable for manufacturing the special steel strip, so that the conventional processing process is complicated and is not easy to implement.
In order to solve the technical problems, the invention provides a special steel strip production process, which comprises the following steps:
s1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured;
s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling;
s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished;
s4: flattening, namely mechanically flattening the strip steel raw material washed by clear water by using a flattening machine, and performing noise reduction treatment on flattening noise;
s5: spheroidizing and recrystallizing and annealing, wherein the flattened strip steel raw material is heated by a strong convection electric furnace to be spheroidized and recrystallized to prepare a special steel strip, and ammonia gas and hydrogen gas are used as protective gas in the furnace, wherein the hydrogen gas and the ammonia gas are prepared by a hydrogen gas generator and an ammonia decomposition furnace;
s6: slitting, namely mechanically slitting the special steel strip by using a slitting machine, and processing noise and leftover materials generated during slitting;
s7: checking and metering, namely, checking that the special steel strip which does not meet the requirements is repeatedly processed in the previous procedure, and performing the next procedure on the qualified product;
s8: oiling and packaging, namely oiling and packaging qualified products;
s9: and (7) warehousing.
Preferably, the waste acid and the cleaning wastewater generated in the chemical pickling and the clean water cleaning adopt the following treatment processes: the method comprises the steps of firstly removing large suspended matters through a grid well, then carrying out oil separation treatment, then homogenizing water quality and water quantity in a water collecting tank, adjusting the pH value and neutralizing the water quality by adding a neutralizing agent, wherein the neutralizing agent adopts alkaline substances such as lime and the like, then adding a flocculating agent such as PAM and the like for flocculation and precipitation, and finally further filtering to reach the reuse water standard.
Preferably, the acid mist generated in the chemical acid washing adopts the following treatment process: proper acid mist inhibitor is added in the pickling process, the generation of acid mist is reduced from the source, and a gas collecting hood and a draught fan are added at the edge of the pickling tank to carry out secondary alkali liquor spraying treatment on the collected acid mist.
Preferably, the noise during flattening adopts the following processing technology: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
Preferably, the noise during slitting adopts the following processing technology: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
Preferably, the leftover materials generated in the slitting process adopt the following treatment processes: and collecting the leftover materials intensively for sale and utilization.
Preferably, a small amount of ammonia gas leaked in the process of preparing ammonia gas by decomposing the ammonia decomposition furnace in S5 is subjected to ventilation and air exchange in a workshop to reduce the concentration of the unorganized discharged ammonia gas in the workshop.
Compared with the related technology, the special steel strip production process provided by the invention has the following beneficial effects:
the invention provides a special steel strip production process which comprises the following steps of S1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured; s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling; s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished; s4: flattening, namely mechanically flattening the strip steel raw material washed by clear water by using a flattening machine, and performing noise reduction treatment on flattening noise; s5: spheroidizing and recrystallizing and annealing, wherein the flattened strip steel raw material is heated by a strong convection electric furnace to be spheroidized and recrystallized to prepare a special steel strip, and ammonia gas and hydrogen gas are used as protective gas in the furnace, wherein the hydrogen gas and the ammonia gas are prepared by a hydrogen gas generator and an ammonia decomposition furnace; s6: slitting, namely mechanically slitting the special steel strip by using a slitting machine, and processing noise and leftover materials generated during slitting; s7: checking and metering, namely, checking that the special steel strip which does not meet the requirements is repeatedly processed in the previous procedure, and performing the next procedure on the qualified product; s8: oiling and packaging, namely oiling and packaging qualified products; s9: and warehousing is achieved, the detailed production process of the special steel strip is systematically shown, the process is simple and easy to operate, and meanwhile, pollution sources which are easy to generate in the process are systematically processed in detail, so that the environmental pollution is avoided, the production noise is reduced, and the production environment is optimized.
Drawings
Fig. 1 is a schematic flow chart of a preferred embodiment of the production process of the special steel strip provided by the invention.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 1 is a schematic flow chart of a preferred embodiment of the production process of the special steel strip according to the present invention. A special steel strip production process comprises the following steps:
s1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured;
s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling;
s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished;
s4: flattening, namely mechanically flattening the strip steel raw material washed by clear water by using a flattening machine, and performing noise reduction treatment on flattening noise;
s5: spheroidizing and recrystallizing and annealing, wherein the flattened strip steel raw material is heated by a strong convection electric furnace to be spheroidized and recrystallized to prepare a special steel strip, and ammonia gas and hydrogen gas are used as protective gas in the furnace, wherein the hydrogen gas and the ammonia gas are prepared by a hydrogen gas generator and an ammonia decomposition furnace;
s6: slitting, namely mechanically slitting the special steel strip by using a slitting machine, and processing noise and leftover materials generated during slitting;
s7: checking and metering, namely, checking that the special steel strip which does not meet the requirements is repeatedly processed in the previous procedure, and performing the next procedure on the qualified product;
s8: oiling and packaging, namely oiling and packaging qualified products;
s9: and (7) warehousing.
The waste acid and cleaning wastewater generated in the chemical pickling and clear water cleaning processes adopt the following treatment processes: the method comprises the steps of firstly removing large suspended matters through a grid well, then carrying out oil separation treatment, then homogenizing water quality and water quantity in a water collecting tank, adjusting the pH value and neutralizing the water quality by adding a neutralizing agent, wherein the neutralizing agent adopts alkaline substances such as lime and the like, then adding a flocculating agent such as PAM and the like for flocculation and precipitation, finally further filtering and treating to reach the reuse water standard, wherein 80% of effluent can be reused for production, and 20% of effluent can be used for water for cleaning toilets.
The acid mist generated in the chemical acid washing adopts the following treatment process: the proper acid mist inhibitor is added in the pickling process, the generation of acid mist is reduced from the source, the mist inhibition rate of the more advanced hydrochloric acid pickling solution in the current market can reach more than 80-90 percent, and a gas collecting hood and a draught fan are added at the edge of a pickling tank to carry out secondary alkali liquor spraying treatment on the collected acid mist.
The noise during flattening adopts the following processing technology: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
The noise during slitting adopts the following processing technology: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
The leftover materials generated during slitting adopt the following treatment processes: and collecting the leftover materials intensively for sale and utilization.
And a small amount of ammonia gas leaked in the process of preparing ammonia gas by decomposing the ammonia decomposition furnace in the S5 is used for reducing the concentration of the unorganized discharged ammonia gas in the workshop by installing a ventilation device in the workshop.
Compared with the related technology, the special steel strip production process provided by the invention has the following beneficial effects:
by S1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured; s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling; s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished; s4: flattening, namely mechanically flattening the strip steel raw material washed by clear water by using a flattening machine, and performing noise reduction treatment on flattening noise; s5: spheroidizing and recrystallizing and annealing, wherein the flattened strip steel raw material is heated by a strong convection electric furnace to be spheroidized and recrystallized to prepare a special steel strip, and ammonia gas and hydrogen gas are used as protective gas in the furnace, wherein the hydrogen gas and the ammonia gas are prepared by a hydrogen gas generator and an ammonia decomposition furnace; s6: slitting, namely mechanically slitting the special steel strip by using a slitting machine, and processing noise and leftover materials generated during slitting; s7: checking and metering, namely, checking that the special steel strip which does not meet the requirements is repeatedly processed in the previous procedure, and performing the next procedure on the qualified product; s8: oiling and packaging, namely oiling and packaging qualified products; s9: and warehousing is achieved, the detailed production process of the special steel strip is systematically shown, the process is simple and easy to operate, and meanwhile, pollution sources which are easy to generate in the process are systematically processed in detail, so that the environmental pollution is avoided, the production noise is reduced, and the production environment is optimized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The production process of the special steel strip is characterized by comprising the following steps of:
s1: inspecting and accepting the strip steel, inspecting the purchased strip steel raw materials, and inspecting and accepting after no quality problem is ensured;
s2: chemical pickling, namely putting the strip steel raw material after acceptance inspection into a pickling tank, pickling by using dilute hydrochloric acid solution, and treating waste acid and acid mist generated by pickling;
s3: cleaning with clear water, washing away residual acid liquor on the surface of the strip steel raw material by utilizing the clear water after the acid cleaning is finished, and treating cleaning wastewater after the cleaning with the clear water is finished;
s4: flattening, namely mechanically flattening the strip steel raw material washed by clear water by using a flattening machine, and performing noise reduction treatment on flattening noise;
s5: spheroidizing and recrystallizing and annealing, wherein the flattened strip steel raw material is heated by a strong convection electric furnace to be spheroidized and recrystallized to prepare a special steel strip, and ammonia gas and hydrogen gas are used as protective gas in the furnace, wherein the hydrogen gas and the ammonia gas are prepared by a hydrogen gas generator and an ammonia decomposition furnace;
s6: slitting, namely mechanically slitting the special steel strip by using a slitting machine, and processing noise and leftover materials generated during slitting;
s7: checking and metering, namely, checking that the special steel strip which does not meet the requirements is repeatedly processed in the previous procedure, and performing the next procedure on the qualified product;
s8: oiling and packaging, namely oiling and packaging qualified products;
s9: and (7) warehousing.
2. The special steel strip production process according to claim 1, wherein the waste acid and the cleaning wastewater generated during the chemical pickling and the cleaning with clear water are treated by the following treatment processes: the method comprises the steps of firstly removing large suspended matters through a grid well, then carrying out oil separation treatment, then homogenizing water quality and water quantity in a water collecting tank, adjusting the pH value and neutralizing the water quality by adding a neutralizing agent, wherein the neutralizing agent adopts alkaline substances such as lime and the like, then adding a flocculating agent such as PAM and the like for flocculation and precipitation, and finally further filtering to reach the reuse water standard.
3. A process for the production of a specialty steel strip according to claim 1 wherein said acid mist generated during chemical pickling is treated by: proper acid mist inhibitor is added in the pickling process, the generation of acid mist is reduced from the source, and a gas collecting hood and a draught fan are added at the edge of the pickling tank to carry out secondary alkali liquor spraying treatment on the collected acid mist.
4. The special steel strip production process according to claim 1, wherein the noise during flattening is processed by the following steps: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
5. The special steel strip production process according to claim 1, wherein the noise during slitting adopts the following processing technology: the damping pad, the sound insulation cover, the silencer and the like are installed on equipment generating noise, the maintenance of daily equipment is strengthened, and the noise generated by abnormal operation of the equipment is eliminated.
6. The special steel strip production process according to claim 1, wherein the leftover materials produced during slitting adopt the following treatment processes: and collecting the leftover materials intensively for sale and utilization.
7. The special steel strip production process as claimed in claim 1, wherein a small amount of ammonia gas leaked in the ammonia decomposition and ammonia gas production process of the ammonia decomposition furnace in the S5 is subjected to workshop-mounted ventilation and air exchange devices to reduce the concentration of the unorganized discharged ammonia gas in the workshop.
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| CN202011318733.1A CN112442698A (en) | 2020-11-23 | 2020-11-23 | Special steel strip production process |
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| CN202011318733.1A CN112442698A (en) | 2020-11-23 | 2020-11-23 | Special steel strip production process |
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