CN105506482A - Ordinary-strength steel for doors and windows of outdoor buildings and preparation method thereof - Google Patents
Ordinary-strength steel for doors and windows of outdoor buildings and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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Abstract
The invention provides ordinary-strength steel for doors and windows of outdoor buildings. The ordinary-strength steel comprises the following chemical components in percentage by weight: 0.79-0.81% of C, 0.11-0.13% of Si, 0.15-0.17% of Mn, 0.7-0.9% of Cr, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 0.13-0.15% of Ni, 0.11-0.13% of Cu, 0.03-0.05% of As, less than or equal to 0.0050% of Al, less than or equal to 0.0080% of N, less than or equal to 0.0030% of O and the balance of iron and trace impurities. The strength and the comprehensive performance of the ordinary-strength steel for the doors and the windows of the outdoor buildings are improved; and the cold-drawing, processing and hardening rate of the ordinary-strength steel for the doors and the windows of the outdoor buildings is increased.
Description
Technical field
The present invention relates to a kind of steel and preparation method thereof, specifically a kind of outdoor building thing door and window conventional strength steel and preparation method thereof.
Background technology
At present, domestic and international regular tenacity and high strength outdoor building thing door and window steel, all not containing Cr, Cr, Ni, Cu are all as residual element, in prior art, outdoor building thing door and window steel improves constantly high-load, lighting, high-strength, high-ductility, high-modulus, a series of requirement such as good corrosion resisting property and welding property.Existing outdoor building thing door and window steel easily forms the abnormal structure such as martensite, cementite network after process for cooling, and structure of steel stability is not high, thus has an impact to the over-all properties of outdoor building thing door and window steel; Separately, the comprehensive drawing property of existing outdoor building thing door and window steel is undesirable.
Summary of the invention
Technical problem to be solved by this invention is:
(1) how to improve outdoor building thing door and window regular tenacity structure of steel net carbon, improve sorbitic rate simultaneously, and improve the comprehensive drawing property of outdoor building thing door and window conventional strength steel;
(2) how to ensure the stability of outdoor building thing door and window regular tenacity structure of steel, there is uniform sorbite tissue (can have a small amount of ferrite and pearlite), avoid the formation of the abnormal structure such as martensite, cementite network; Can make outdoor building thing door and window conventional strength steel have excellent can drawing processing characteristics.
The technical scheme that the present invention solves above technical problem is:
A kind of outdoor building thing door and window conventional strength steel, its chemical component weight per-cent is: C:0.79-0.81%, Si:0.11-0.13%, Mn:0.15-0.17%, Cr:0.7-0.9%, P≤0.025%, S≤0.025%, Ni:0.13-0.15%, Cu:0.11-0.13%, As:0.03-0.05%, Al≤0.0050%, N≤0.0080%, O≤0.0030%, surplus is iron and trace impurity;
Outdoor building thing door and window steel surface-coated one deck protective layer, protective layer comprises following component according to the mass fraction: modified EPT rubber: 46-49 part, filler: 15-18 part, toughner: 5-7 part, silane coupling agent: 5-7 part, dispersion agent: 3-5 part, antimildew disinfectant: 7-9 part, rare earth composite stabilizer: 1.5-1.7 part; Filler is white carbon black; Toughner is styrene butadiene thermoplasticelastomer; Dispersion agent is BYK190 dispersion agent; Antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 15-17 part, zinc sulfate: 20-23 part, calcium chloride: 5-7 part, sodium hydroxide: 25-27 part, stearic acid: 3-5 part.
The production technique of outdoor building thing door and window conventional strength steel, comprises electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, and strand is 1320-1350 DEG C in the soaking temperature of process furnace, and heat-up time is 2-5 hour; Start rolling temperature 1190-1210 DEG C, finishing temperature 850-953 DEG C, laying temperature 831-834 DEG C; Thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 826-829 DEG C, insulation 30-70 minute, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 585-587 DEG C, insulation 30-80 minute, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
The present invention is by adding the Cr element of 0.7-0.9%, and coordinate the composition of other element to limit, and preparation method, can fining austenite grains, improve the hardening capacity of steel, can the pearlite interlaminar spacing of refinement steel wire rod, improve the sorbite rate of steel, thus make outdoor building thing door and window conventional strength steel have uniform sorbite tissue, a small amount of ferrite and pearlite can be had, avoid the formation of the abnormal structure such as martensite, cementite network; The intensity of outdoor building thing door and window conventional strength steel and over-all properties are improved.
The present invention is by adding the Cr element of 0.7-0.9%, and suitably reduce Mn content (control Mn content is 0.15-0.17%), thus the improvement result played outdoor building thing door and window regular tenacity structure of steel net carbon, improve sorbitic rate simultaneously, improve the cold-drawn work hardening rate of outdoor building thing door and window conventional strength steel, obtain beyond thought technique effect.
In addition, the present invention, by coating one deck protective layer of building window conventional strength steel out of doors, can increase work-ing life, this protective layer coating can not bubble, chap, whiten and the problem such as delamination, also there is very strong anticorrosive and resistance to low temperature, can jail.
Embodiment
embodiment 1
The present embodiment provides a kind of outdoor building thing door and window conventional strength steel, and its chemical component weight per-cent is: C:0.79%, Si:0.11%, Mn:0.15%, Cr:0.7%, P:0.025%, S:0.025%, Ni:0.13%, Cu:0.11%, As:0.03%, Al:0.0050%, N:0.0080%, O:0.0030%, surplus is iron and trace impurity; The present embodiment outdoor building thing door and window steel surface-coated one deck protective layer, protective layer comprise following component according to the mass fraction: modified EPT rubber: 46 parts, filler: 15 parts, toughner: 5 parts, silane coupling agent: 5 parts, dispersion agent: 3 parts, antimildew disinfectant: 7 parts, rare earth composite stabilizer: 1.5 parts; Filler is white carbon black; Toughner is styrene butadiene thermoplasticelastomer; Dispersion agent is BYK190 dispersion agent; Antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 15 parts, zinc sulfate: 20 parts, calcium chloride: 5 parts, sodium hydroxide: 25 parts, stearic acid: 3 parts.
The production technique of the outdoor building thing door and window conventional strength steel of the present embodiment, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, strand is 1320 DEG C in the soaking temperature of process furnace, and heat-up time is 2 hours; Start rolling temperature 1190 DEG C, finishing temperature 850 DEG C, laying temperature 831 DEG C; Thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 826 DEG C, be incubated 30 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 585 DEG C, be incubated 30 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
embodiment 2
The present embodiment provides a kind of outdoor building thing door and window conventional strength steel, and its chemical component weight per-cent is: C:0.80%, Si:0.12%, Mn:0.16%, Cr:0.8%, P:0.02%, S:0.02%, Ni:0.14%, Cu:0.12%, As:0.04%, Al:0.004%, N:0.006%, O:0.002%, surplus is iron and trace impurity; The present embodiment outdoor building thing door and window steel applies one deck protective layer, protective layer comprises following component according to the mass fraction: modified EPT rubber: 48 parts, filler: 16 parts, toughner: 6 parts, silane coupling agent: 6 parts, dispersion agent: 4 parts, antimildew disinfectant: 8 parts, rare earth composite stabilizer: 1.6 parts; Filler is white carbon black; Toughner is styrene butadiene thermoplasticelastomer; Dispersion agent is BYK190 dispersion agent; Antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 16 parts, zinc sulfate: 22 parts, calcium chloride: 6 parts, sodium hydroxide: 26 parts, stearic acid: 4 parts.
The production technique of the outdoor building thing door and window conventional strength steel of the present embodiment, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, strand is 1330 DEG C in the soaking temperature of process furnace, and heat-up time is 3 hours; Start rolling temperature 1200 DEG C, finishing temperature 890 DEG C, laying temperature 833 DEG C; Thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 828 DEG C, be incubated 40 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 586 DEG C, be incubated 50 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
embodiment 3
The present embodiment provides a kind of outdoor building thing door and window conventional strength steel, and its chemical component weight per-cent is: C:0.81%, Si:0.13%, Mn:0.17%, Cr:0.9%, P:0.015%, S:0.015%, Ni:0.15%, Cu:0.13%, As:0.05%, Al:0.0030%, N:0.0020%, O:0.0020%, surplus is iron and trace impurity; The outdoor building thing door and window steel of the present embodiment applies one deck protective layer, protective layer comprises following component according to the mass fraction: modified EPT rubber: 49 parts, filler: 18 parts, toughner: 7 parts, silane coupling agent: 7 parts, dispersion agent: 5 parts, antimildew disinfectant: 9 parts, rare earth composite stabilizer: 1.7 parts; Filler is white carbon black; Toughner is styrene butadiene thermoplasticelastomer; Dispersion agent is BYK190 dispersion agent; Antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 17 parts, zinc sulfate: 23 parts, calcium chloride: 7 parts, sodium hydroxide: 27 parts, stearic acid: 5 parts.
The production technique of the outdoor building thing door and window conventional strength steel of the present embodiment, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, strand is 1350 DEG C in the soaking temperature of process furnace, and heat-up time is 5 hours; Start rolling temperature 1210 DEG C, finishing temperature 953 DEG C, laying temperature 834 DEG C; Thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 829 DEG C, be incubated 70 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 587 DEG C, be incubated 80 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (8)
1. an outdoor building thing door and window conventional strength steel, is characterized in that: its chemical component weight per-cent is: C:0.79-0.81%, Si:0.11-0.13%, Mn:0.15-0.17%, Cr:0.7-0.9%, P≤0.025%, S≤0.025%, Ni:0.13-0.15%, Cu:0.11-0.13%, As:0.03-0.05%, Al≤0.0050%, N≤0.0080%, O≤0.0030%, surplus is iron and trace impurity;
Described outdoor building thing door and window conventional strength steel surface-coated one deck protective layer, described protective layer comprises following component according to the mass fraction: modified EPT rubber: 46-49 part, filler: 15-18 part, toughner: 5-7 part, silane coupling agent: 5-7 part, dispersion agent: 3-5 part, antimildew disinfectant: 7-9 part, rare earth composite stabilizer: 1.5-1.7 part;
Described filler is white carbon black; Described toughner is styrene butadiene thermoplasticelastomer; Described dispersion agent is BYK190 dispersion agent; Described antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Described rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 15-17 part, zinc sulfate: 20-23 part, calcium chloride: 5-7 part, sodium hydroxide: 25-27 part, stearic acid: 3-5 part.
2. outdoor building thing door and window conventional strength steel as claimed in claim 1, is characterized in that: its chemical component weight per-cent is: C:0.79%, Si:0.11%, Mn:0.15%, Cr:0.7%, P:0.025%, S:0.025%, Ni:0.13%, Cu:0.11%, As:0.03%, Al:0.0050%, N:0.0080%, O:0.0030%, surplus is iron and trace impurity;
Described outdoor building thing door and window conventional strength steel surface-coated one deck protective layer, described protective layer comprises following component according to the mass fraction: modified EPT rubber: 46 parts, filler: 15 parts, toughner: 5 parts, silane coupling agent: 5 parts, dispersion agent: 3 parts, antimildew disinfectant: 7 parts, rare earth composite stabilizer: 1.5 parts;
Described filler is white carbon black; Described toughner is styrene butadiene thermoplasticelastomer; Described dispersion agent is BYK190 dispersion agent; Described antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Described rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 15 parts, zinc sulfate: 20 parts, calcium chloride: 5 parts, sodium hydroxide: 25 parts, stearic acid: 3 parts.
3. outdoor building thing door and window conventional strength steel as claimed in claim 1, is characterized in that: its chemical component weight per-cent is: C:0.80%, Si:0.12%, Mn:0.16%, Cr:0.8%, P:0.02%, S:0.02%, Ni:0.14%, Cu:0.12%, As:0.04%, Al:0.004%, N:0.006%, O:0.002%, surplus is iron and trace impurity;
Described outdoor building thing door and window conventional strength steel applies one deck protective layer, described protective layer comprises following component according to the mass fraction: modified EPT rubber: 48 parts, filler: 16 parts, toughner: 6 parts, silane coupling agent: 6 parts, dispersion agent: 4 parts, antimildew disinfectant: 8 parts, rare earth composite stabilizer: 1.6 parts;
Described filler is white carbon black; Described toughner is styrene butadiene thermoplasticelastomer; Described dispersion agent is BYK190 dispersion agent; Described antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Described rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 16 parts, zinc sulfate: 22 parts, calcium chloride: 6 parts, sodium hydroxide: 26 parts, stearic acid: 4 parts.
4. outdoor building thing door and window conventional strength steel as claimed in claim 1, is characterized in that: its chemical component weight per-cent is: C:0.81%, Si:0.13%, Mn:0.17%, Cr:0.9%, P:0.015%, S:0.015%, Ni:0.15%, Cu:0.13%, As:0.05%, Al:0.0030%, N:0.0020%, O:0.0020%, surplus is iron and trace impurity;
Described outdoor building thing door and window conventional strength steel applies one deck protective layer, described protective layer comprises following component according to the mass fraction: modified EPT rubber: 49 parts, filler: 18 parts, toughner: 7 parts, silane coupling agent: 7 parts, dispersion agent: 5 parts, antimildew disinfectant: 9 parts, rare earth composite stabilizer: 1.7 parts;
Described filler is white carbon black; Described toughner is styrene butadiene thermoplasticelastomer; Described dispersion agent is BYK190 dispersion agent; Described antimildew disinfectant is that Wocosin 50TK or tebuconazole mix composite with 3-iodo-2-propargyl butyl carbamate equal proportion; Described rare earth composite stabilizer comprises following component according to the mass fraction: rare earth chloride: 17 parts, zinc sulfate: 23 parts, calcium chloride: 7 parts, sodium hydroxide: 27 parts, stearic acid: 5 parts.
5. the production technique of the outdoor building thing door and window conventional strength steel as described in claim arbitrary in claim 1-4, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, it is characterized in that: strand is 1320-1350 DEG C in the soaking temperature of process furnace, heat-up time is 2-5 hour; Start rolling temperature 1190-1210 DEG C, finishing temperature 850-953 DEG C, laying temperature 831-834 DEG C; Described thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 826-829 DEG C, insulation 30-70 minute, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 585-587 DEG C, insulation 30-80 minute, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
6. the production technique of outdoor building thing door and window conventional strength steel as claimed in claim 5, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, it is characterized in that: strand is 1320 DEG C in the soaking temperature of process furnace, heat-up time is 2 hours; Start rolling temperature 1190 DEG C, finishing temperature 850 DEG C, laying temperature 831 DEG C; Described thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 826 DEG C, be incubated 30 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 585 DEG C, be incubated 30 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
7. the production technique of outdoor building thing door and window conventional strength steel as claimed in claim 5, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, it is characterized in that: strand is 1330 DEG C in the soaking temperature of process furnace, heat-up time is 3 hours; Start rolling temperature 1200 DEG C, finishing temperature 890 DEG C, laying temperature 833 DEG C; Described thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 828 DEG C, be incubated 40 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 586 DEG C, be incubated 50 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
8. the production technique of outdoor building thing door and window conventional strength steel as claimed in claim 5, comprise electrosmelting, external refining, continuous-casting of steel billet, heating rolling and thermal treatment, it is characterized in that: strand is 1350 DEG C in the soaking temperature of process furnace, heat-up time is 5 hours; Start rolling temperature 1210 DEG C, finishing temperature 953 DEG C, laying temperature 834 DEG C; Described thermal treatment adopts quenching+tempering, thermal treatment is specially: quenching temperature is 829 DEG C, be incubated 70 minutes, after coming out of the stove, shrend is to room temperature, then tempering, tempering temperature 587 DEG C, be incubated 80 minutes, after coming out of the stove, water-cooled or air cooling are to room temperature, make wire rod have uniform sorbite tissue, containing a small amount of ferrite and pearlite, there is no martensite, cementite network class abnormal structure.
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| CN201510894358.8A CN105506482A (en) | 2015-12-08 | 2015-12-08 | Ordinary-strength steel for doors and windows of outdoor buildings and preparation method thereof |
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| CN201510894358.8A CN105506482A (en) | 2015-12-08 | 2015-12-08 | Ordinary-strength steel for doors and windows of outdoor buildings and preparation method thereof |
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