CN106811579B - Two phase stainless steel direct-on-line solid solution craft - Google Patents

Two phase stainless steel direct-on-line solid solution craft Download PDF

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Publication number
CN106811579B
CN106811579B CN201710053274.0A CN201710053274A CN106811579B CN 106811579 B CN106811579 B CN 106811579B CN 201710053274 A CN201710053274 A CN 201710053274A CN 106811579 B CN106811579 B CN 106811579B
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China
Prior art keywords
heat
furnace
treatment
temperature
solution
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CN201710053274.0A
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CN106811579A (en
Inventor
刘伟国
胡跃兵
陈祖兵
叶明生
林向明
李志杰
陈文君
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Fujian Wu Jing Stainless Steel Products Co Ltd
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Fujian Wu Jing Stainless Steel Products Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62Quenching devices
    • C21D1/667Quenching devices for spray quenching
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062Heat-treating apparatus with a cooling or quenching zone
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54Furnaces for treating strips or wire
    • C21D9/56Continuous furnaces for strip or wire

Abstract

The invention discloses a kind of two phase stainless steel direct-on-line solid solution crafts, it is specific as follows: the high temperature wire rod after Laying head batches directly is sent into heat-treatment furnace annealing, the laying temperature of red steel is 880~950 DEG C, Laying head is to the insulating roller way for having 15 meters between heat-treatment furnace, red steel completes accumulation in insulating roller way, stackeding speed is 180~280kg/m, then it is sent into heat-treatment furnace, 45 meters of furnace superintendent of heat treatment, furnace rolls road 4.8~6cm/s of linear velocity, in-furnace temperature is controlled at 1000~1100 DEG C, out after heat-treatment furnace red steel spray solution device in through upper and lower cool water shower quenching solution, 4.5~5kg/cm of hydraulic pressure2, the upper and lower 280~300m of flow3/ h enters cold scattering roller-way collection volume by the wire rod after spray quenching solution heat treatment, sampling, is packaged.Present invention process is simple, at low cost, and energy-saving and emission-reduction are high-quality.

Description

Two phase stainless steel direct-on-line solid solution craft
Technical field
The present invention relates to stainless steel production technical fields more particularly to a kind of two phase stainless steel direct-on-line to be dissolved work Skill.
Background technique
Marine building structure requires pitting resistance with stainless steel rebar two phase stainless steel S2205 (022Cr22Ni5Mo3N) Height, it is now domestic to be in development phase, and also conventional solid solution craft is using offline solution treatment, i.e. collection is batched in rolling It first cools down afterwards, then cold charge is annealed into stove heating, the energy consumption and metal consumption of offline solution treatment are big, and right in operation Wire surface is also easy to produce wiping and scratches, and affects final product quality.
Summary of the invention
A kind of simple process, cost are provided it is an object of the invention to overcome the deficiencies in the prior art described above place Low, energy saving resources two phase stainless steel direct-on-line solid solution crafts.
The present invention realizes in the following way:
Two phase stainless steel direct-on-line solid solution craft, it is characterised in that: specific as follows: by the height after Laying head batches Warm wire rod is directly sent into heat-treatment furnace annealing, and the laying temperature of red steel is 880~950 DEG C, and Laying head is to having 15 between heat-treatment furnace The insulating roller way of rice, red steel complete accumulation in insulating roller way, and stackeding speed is 180~280kg/m, are then sent into heat treatment Furnace is heat-treated 45 meters of furnace superintendent, furnace rolls road 4.8~6cm/s of linear velocity, and in-furnace temperature is controlled at 1000~1100 DEG C, out at heat Red steel is in spray solution device through upper and lower cool water shower quenching solution, 4.5~5kg/cm of hydraulic pressure after reason furnace2, above and below flow 280~300m3/ h enters cold scattering roller-way collection volume by the wire rod after spray quenching solution heat treatment, sampling, is packaged.
The beneficial effects of the present invention are: 1, energy-saving and emission-reduction: 30 cubic metre/ton steel of natural gas can be saved;2, metal is reduced Consumption: due to being not required to reheating, metal amount of oxidation about 1% can be reduced;3, offline solid solution process is eliminated, reduces and operated The wiping of wire surface is scratched in journey, improves final product quality.
Specific embodiment
The specific embodiment of the invention is now described in detail:
A kind of two phase stainless steel direct-on-line solid solution craft, it is specific as follows: by the high temperature wire rod after Laying head batches It is directly sent into heat-treatment furnace annealing, the laying temperature of red steel is 880~950 DEG C, Laying head to the guarantor for there are 15 meters between heat-treatment furnace Warm roller-way, red steel complete accumulation in insulating roller way, and stackeding speed is 180~280kg/m, heat-treatment furnace are then sent into, at heat 45 meters of furnace superintendent, furnace rolls road 4.8~6cm/s of linear velocity of reason, in-furnace temperature is controlled at 1000~1100 DEG C, red after heat-treatment furnace out Steel is in spray solution device through upper and lower cool water shower quenching solution, 4.5~5kg/cm of hydraulic pressure2, flow upper and lower 280~ 300m3/ h enters cold scattering roller-way collection volume by the wire rod after spray quenching solution heat treatment, sampling, is packaged.
The furnace roller road that enters of insulating roller way of the invention is divided into two absolute altitudes (difference 40mm), and two biographies are arranged in two sections of transmissions Dynamic speed, is accumulated by the speed official post coil of wire, meets heat treatment requirements.Samming is wanted and heated with the transmission speed of furnace area adjacent segment The furnace rolls linear velocity in area is consistent.
Heat-treatment furnace of the invention: continuous roller-hearth furnace, using heat supply above and below natural gas combustion nozzle, the smoke evacuation of furnace tail lower part, cigarette Road sets tubular exchanger, chimney natural draught system, chief component: upper furnace body and lower furnace body.Furnace top hoisting mechanism contains 12 spiral lifts, input and output material end respectively set a lifting furnace door;Lower furnace body inlet roller way containing heating zone is (in heat-treatment furnace inlet Equipped with inlet roller way 2, driven separately), (heat-treatment furnace furnace body is equipped with 265 furnace rolls, individually passes in heating zone furnace rolls road Dynamic, furnace rolls bearing is using blower for air cooling).Its operation logic: continuous by specification kind setting furnace temperature and linear velocity, the coil of wire By heat-treatment furnace, heating and samming process are completed.Heat-treatment furnace burner uses pulse combustion control system;It is arranged on flue high Heat exchanger is imitated, warm-up combustion-supporting air realizes energy conservation;Using the equipment of practical, reliable, advanced automatically controlled instrument control, guarantee the peace of stove Complete normal production, realizes operation automation;It is equipped with perfect Automatic thermal Control system, it is ensured that stringent air-fuel ratio and rationally The control such as furnace pressure, so that heat loss is reduced to minimum.
Spray quenching solution device of the invention: by the red line hot rolling of heating and samming, it is solid to continue through spray quenching Dissolving device is quickly down to room temperature, completes solution heat treatment, quenching unit: including shell, spray tube, catch pit and discharge water system System.Quenching area roller-way: two groups of transmissions are divided into quenching, and first group is equipped with 22 roller-ways, central driving, the speed of service and furnace rolls Road is consistent, and second group is equipped with 23 roller-ways, and central driving, the speed of service and later process are consistent.
The present invention utilize red steel waste heat, make two phase stainless steel (S2205) continuously should all ground realize solution heat treatment, and Effective linking of red line hot rolling and cold collection volume is completed, mechanical property, grain size are uniform in length.
The mechanical property requirements of the two phase stainless steel (S2205) of national regulation: yield strength >=500MPa, strong flexor ratio 1.10 ~1.27, elongation percentage >=25%.
The mechanical property of two phase stainless steel (S2205) produced by the invention is as follows:
It can learn from upper table: be accorded with using the two phase stainless steel S2205 that the direct-on-line solid solution craft of the application produces Standardization requirement.

Claims (1)

1. two phase stainless steel direct-on-line solid solution craft, it is characterised in that: specific as follows: by the high temperature after Laying head batches Wire rod is directly sent into heat-treatment furnace annealing, and the laying temperature of red steel is 880~950 DEG C, and Laying head is to there is 15 meters between heat-treatment furnace Insulating roller way, red steel completed in insulating roller way accumulation, stackeding speed be 180~280kg/m, be then sent into heat-treatment furnace, 45 meters of furnace superintendent, furnace rolls road 4.8~6cm/s of linear velocity of heat treatment, in-furnace temperature are controlled at 1000~1100 DEG C, out heat-treatment furnace Red steel is in spray solution device through upper and lower cool water shower quenching solution, 4.5~5kg/cm of hydraulic pressure afterwards2, flow upper and lower 280~ 300m3/ h enters cold scattering roller-way collection volume by the wire rod after spray quenching solution heat treatment, sampling, is packaged.
CN201710053274.0A 2017-01-24 2017-01-24 Two phase stainless steel direct-on-line solid solution craft Active CN106811579B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710053274.0A CN106811579B (en) 2017-01-24 2017-01-24 Two phase stainless steel direct-on-line solid solution craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710053274.0A CN106811579B (en) 2017-01-24 2017-01-24 Two phase stainless steel direct-on-line solid solution craft

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Publication Number Publication Date
CN106811579A CN106811579A (en) 2017-06-09
CN106811579B true CN106811579B (en) 2019-06-25

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109014148A (en) * 2018-08-16 2018-12-18 共享铸钢有限公司 A kind of hot shake-out method of two-phase stainless steel large-sized steel-casting

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104624648A (en) * 2013-11-08 2015-05-20 青岛宏泰铜业有限公司 Continuous casting and rolling method for producing solid solution state multicomponent alloy telegraph pole
CN104342575B (en) * 2014-10-11 2017-01-18 烟台万隆真空冶金股份有限公司 Electrified railway chromium-zirconium-copper contact line and machining process thereof

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