CN104328352A - High-strength prestressed wire and heat treatment method thereof - Google Patents
High-strength prestressed wire and heat treatment method thereof Download PDFInfo
- Publication number
- CN104328352A CN104328352A CN201410622162.9A CN201410622162A CN104328352A CN 104328352 A CN104328352 A CN 104328352A CN 201410622162 A CN201410622162 A CN 201410622162A CN 104328352 A CN104328352 A CN 104328352A
- Authority
- CN
- China
- Prior art keywords
- cooled
- temperature
- room temperature
- steel wire
- insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/28—Normalising
-
- 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
- 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
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
-
- 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
-
- 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
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
Abstract
The invention discloses a high-strength prestressed wire and a heat treatment method thereof. The high-strength prestressed wire is prepared from the following chemical ingredients in percentage by weight: 0.56-0.58% of C, 3.6-3.8% of Ni, 7.4-7.8% of Cr, 2.55-2.58% of Si, 1.26-1.28% of Mn, 1.85-1.92% of Cu, 4.23-4.25% of V, 4.12-4.15% of Mo, 0.02-0.05% of P, 0.12-0.15% of W, 2.32-2.35% of composite rare earth and Fe as balance. According to the high-strength prestressed wire and the heat treatment method thereof, the strength is high, the service life is long, the production cost is low, the heat treatment process is simple, the corrosion resistance and the friction resistance are improved, the service life is prolonged, the working efficiency is high, the quantity of the wire can be reduced in design to meet the design requirement, and the cost is saved.
Description
Technical field
The present invention relates to compressor wire, specifically a kind of high-strength prestressed steel wire and heat treating method thereof.
Background technology
Compressor wire is owing to having high strength, become the important materials in bridge, railway construction, the intensity of compressor wire directly has influence on the quality of whole engineering, be directly connected to the key issue in bridge, railway construction and its life-span used, reaching design strength by increasing its quantity in existing technology, greatly wasting resource, adding production cost, and there is easily corrosion in steel wire, the serious problems such as work-ing life is short.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, a kind of high-strength prestressed steel wire and heat treating method thereof are proposed, this high-strength prestressed steel wire not only intensity is high, long service life, production cost is low, thermal treatment process is simple, improves that it is corrosion-resistant, rub resistance and work-ing life, and the quantity that can reduce steel wire in bamboo product just can reach its design requirements, cost-saving, and reduce the complexity of structure, facilitate workman to construct, working efficiency is high, security is high, steady quality.
In order to solve the problems of the technologies described above, technical scheme of the present invention is achieved in the following ways: a kind of high-strength prestressed steel wire, and Chemical Composition is by mass percentage: C:0.56-0.58%, Ni:3.6-3.8%, Cr:7.4-7.8%, Si:2.55-2.58%, Mn:1.26-1.28%, Cu:1.85-1.92%, V:4.23-4.25%, Mo:4.12-4.15%, P:0.02-0.05%, W:0.12-0.15%, compound rare-earth: 2.32-2.35%, surplus is Fe;
Compound rare-earth is by mass percentage: Gd:21.5-21.8%, Pr:6.25-6.28%, Er:11.2-11.5%, Ho:10.8-11.2%, Nd:8.2-8.5%, Sm:12.7-12.9%, Tb:22.3-22.5%, and surplus is La.
Present invention also offers a kind of heat treating method of high-strength prestressed steel wire, the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 760-780 DEG C, insulation 5-8h, then put into after oil cooling pond soaks 20-30min, adopt double normalizing+double tempering, first time normalizing: temperature is at 725-730 DEG C, 6-8min is incubated after temperature, then air cooling is to room temperature, carry out second time normalizing again: temperature is at 780-785 DEG C, after temperature, be incubated 10-13min, then with the speed water-cooled of 10-15 DEG C/s to room temperature; Then first time tempering: Heating temperature is 850-860 DEG C, is incubated 10-12min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 930-935 DEG C, after temperature, be incubated 18-22min, with the speed oil cooling of 8-12 DEG C/s to room temperature;
Step (2): first by steel wire heating to 880-890 DEG C, insulation 45-55min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 710-715 DEG C with the speed of 11-13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 538-545 DEG C with 10-15 DEG C/s speed, insulation 30-40min, then use water-cooled with the speed cool to room temperature of 12-15 DEG C/s, and then be heated to 850-860 DEG C, be cooled to room temperature with oil cooling with 13-16 DEG C/s;
Step (3): steel wire is put into vacuum oven, first with the heating rate of 22-24 DEG C/s to 1100-1150 DEG C, insulation 4-8h, then the omnidistance nitrogen blowing that adopts cools, speed is 12-15 DEG C/s, be cooled to 680-690 DEG C, insulation 35-45min, is then cooled to 360-370 DEG C with 10-15 DEG C/s speed, insulation 30-35min, and then by heating temperatures to 850-860 DEG C, insulation 1-2h, steel wire heat, to room temperature, is arrived 980-985 DEG C by last air cooling, insulation 5-8h, then water-cooled is cooled to room temperature with the speed of 15-18 DEG C/s;
Step (4): then put into drying oven, drying temperature is 160-180 DEG C, and time of drying is 5-8h, and then air cooling is to room temperature, defect detecting test and inspection size.
The technical scheme that the present invention limits further is:
Aforesaid high-strength prestressed steel wire, Chemical Composition is by mass percentage: C:0.56%, Ni:3.6%, Cr:7.4%, Si:2.55%, Mn:1.26%, Cu:1.85%, V:4.23%, Mo:4.12%, P:0.02%, W:0.12%, compound rare-earth: 2.32%, surplus is Fe; Compound rare-earth is by mass percentage: Gd:21.5%, Pr:6.25%, Er:11.2%, Ho:10.8%, Nd:8.2%, Sm:12.7%, Tb:22.3%, and surplus is La.
Aforesaid high-strength prestressed steel wire, Chemical Composition is by mass percentage: C:0.58%, Ni:3.8%, Cr:7.8%, Si:2.58%, Mn:1.28%, Cu:1.92%, V:4.25%, Mo:4.15%, P:0.05%, W:0.15%, compound rare-earth: 2.35%, surplus is Fe; Compound rare-earth is by mass percentage: Gd:21.8%, Pr:6.28%, Er:11.5%, Ho:11.2%, Nd:8.5%, Sm:12.9%, Tb:22.5%, and surplus is La.
Aforesaid high-strength prestressed steel wire, Chemical Composition is by mass percentage: C:0.57%, Ni:3.7%, Cr:7.5%, Si:2.57%, Mn:1.27%, Cu:1.88%, V:4.24%, Mo:4.13%, P:0.04%, W:0.13%, compound rare-earth: 2.34%, surplus is Fe; Compound rare-earth is by mass percentage: Gd:21.6%, Pr:6.26%, Er:11.4%, Ho:10.9%, Nd:8.4%, Sm:12.8%, Tb:22.4%, and surplus is La.
The heat treating method of aforesaid high-strength prestressed steel wire, the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 760 DEG C, insulation 5h, then puts into after oil cooling pond soaks 20min, adopts double normalizing+double tempering, first time normalizing: temperature is at 725 DEG C, after temperature, be incubated 6min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 780 DEG C, after temperature, be incubated 10min, then with the speed water-cooled of 10 DEG C/s to room temperature; Then first time tempering: Heating temperature is 850 DEG C, is incubated 10min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 930 DEG C, after temperature, be incubated 18min, with the speed oil cooling of 8 DEG C/s to room temperature; Step (2): first by steel wire heating to 880 DEG C, insulation 45min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s; Step (3): steel wire is put into vacuum oven, first with the heating rate to 1100 DEG C of 22 DEG C/s, insulation 4h, then the omnidistance nitrogen blowing that adopts cools, and speed is 12 DEG C/s, is cooled to 680 DEG C, insulation 35min, is then cooled to 360 DEG C with 10 DEG C/s speed, insulation 30min, and then by heating temperatures to 850 DEG C, insulation 1h, last air cooling to room temperature, by steel wire heat to 980 DEG C, insulation 5h, then water-cooled is cooled to room temperature with the speed of 15 DEG C/s; Step (4): then put into drying oven, drying temperature is 160 DEG C, and time of drying is 5h, and then air cooling is to room temperature, defect detecting test and inspection size.
The heat treating method of aforesaid high-strength prestressed steel wire, the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 780 DEG C, insulation 8h, then puts into after oil cooling pond soaks 30min, adopts double normalizing+double tempering, first time normalizing: temperature is at 730 DEG C, after temperature, be incubated 8min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 785 DEG C, after temperature, be incubated 13min, then with the speed water-cooled of 15 DEG C/s to room temperature; Then first time tempering: Heating temperature is 860 DEG C, is incubated 12min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 935 DEG C, after temperature, be incubated 22min, with the speed oil cooling of 12 DEG C/s to room temperature; Step (2): first by steel wire heating to 890 DEG C, insulation 55min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s; Step (3): steel wire is put into vacuum oven, first with the heating rate to 1150 DEG C of 24 DEG C/s, insulation 8h, then the omnidistance nitrogen blowing that adopts cools, and speed is 15 DEG C/s, is cooled to 690 DEG C, insulation 45min, is then cooled to 370 DEG C with 15 DEG C/s speed, insulation 35min, and then by heating temperatures to 860 DEG C, insulation 2h, last air cooling to room temperature, by steel wire heat to 985 DEG C, insulation 8h, then water-cooled is cooled to room temperature with the speed of 18 DEG C/s; Step (4): then put into drying oven, drying temperature is 180 DEG C, and time of drying is 8h, and then air cooling is to room temperature, defect detecting test and inspection size.
The heat treating method of aforesaid high-strength prestressed steel wire, the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 770 DEG C, insulation 7h, then puts into after oil cooling pond soaks 25min, adopts double normalizing+double tempering, first time normalizing: temperature is at 728 DEG C, after temperature, be incubated 5min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 782 DEG C, after temperature, be incubated 12min, then with the speed water-cooled of 13 DEG C/s to room temperature; Then first time tempering: Heating temperature is 855 DEG C, is incubated 11min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 934 DEG C, after temperature, be incubated 20min, with the speed oil cooling of 11 DEG C/s to room temperature; Step (2): first by steel wire heating to 886 DEG C, insulation 50min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 713 DEG C with the speed of 12 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 540 DEG C with 14 DEG C/s speed, insulation 35min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, and then be heated to 855 DEG C, be cooled to room temperature with oil cooling with 15 DEG C/s; Step (3): steel wire is put into vacuum oven, first with the heating rate to 1125 DEG C of 23 DEG C/s, insulation 7h, then the omnidistance nitrogen blowing that adopts cools, and speed is 13 DEG C/s, is cooled to 685 DEG C, insulation 42min, is then cooled to 365 DEG C with 13 DEG C/s speed, insulation 32min, and then by heating temperatures to 858 DEG C, insulation 1.7h, last air cooling to room temperature, by steel wire heat to 982 DEG C, insulation 6h, then water-cooled is cooled to room temperature with the speed of 16 DEG C/s; Step (4): then put into drying oven, drying temperature is 165 DEG C, and time of drying is 6h, and then air cooling is to room temperature, defect detecting test and inspection size.
The invention has the beneficial effects as follows: this high-strength prestressed steel wire not only intensity is high, long service life, production cost is low, and thermal treatment process is simple, improve that it is corrosion-resistant, rub resistance and work-ing life, the quantity that can reduce steel wire in bamboo product just can reach its design requirements, cost-saving, and reduces the complexity of structure, workman is facilitated to construct, working efficiency is high, and security is high, steady quality, wherein add Mo element, erosion resistance and intensity can be improved, add V element, energy crystal grain thinning in thermal treatment, its intensity can be strengthened, toughness, anticorrosive, wear-resisting and withstand shocks load etc., add P element, energy crystal grain thinning and its superheated susceptivity of reduction and temper brittleness, improve intensity, resistant to hydrogen under weather-resistant and high temperature can be improved, nitrogen, ammonia corrosion, add Cr and Ni trace element, its wear-resisting ability ability can be improved and increase its intensity, improve its fusing point, increase the ability of high temperature resistance, also add rare earth element simultaneously, fine and close crystal grain is formed in heat treatment process, and be evenly distributed, increase its intensity, improve its over-all properties, produce beyond thought technique effect,
The grain fineness number of double normalizing+double tempering energy refinement steel wire is adopted in this thermal treatment process, improve its intensity and corrosion-resistant, rub resistance and antioxidant property, and the method adopting oil cooling and water-cooled to combine, improves its intensity, and put into vacuum oven and adopt nitrogen blowing to cool, can prevent and the oxygen generation oxidizing reaction in air, be conducive to crystal grain thinning and impel crystal grain to be evenly distributed, improving its intensity and comprehensive mechanical performance, increase its work-ing life.
Embodiment
The present invention is described in further detail below:
embodiment 1
The present embodiment provides high-strength prestressed steel wire, and Chemical Composition is by mass percentage: C:0.56%, Ni:3.6%, Cr:7.4%, Si:2.55%, Mn:1.26%, Cu:1.85%, V:4.23%, Mo:4.12%, P:0.02%, W:0.12%, compound rare-earth: 2.32%, surplus is Fe, compound rare-earth is by mass percentage: Gd:21.5%, Pr:6.25%, Er:11.2%, Ho:10.8%, Nd:8.2%, Sm:12.7%, Tb:22.3%, and surplus is La, this invention also provides the heat treating method of this high-strength prestressed steel wire, the method is carried out according to the following steps: step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 760 DEG C, insulation 5h, then put into after oil cooling pond soaks 20min, adopt double normalizing+double tempering, first time normalizing: temperature is at 725 DEG C, 6min is incubated after temperature, then air cooling is to room temperature, carry out second time normalizing again: temperature is at 780 DEG C, 10min is incubated after temperature, then with the speed water-cooled of 10 DEG C/s to room temperature, then first time tempering: Heating temperature is 850 DEG C, is incubated 10min after temperature, then carries out second time tempering after air cooling to room temperature, Heating temperature is 930 DEG C, after temperature, be incubated 18min, with the speed oil cooling of 8 DEG C/s to room temperature, step (2): first by steel wire heating to 880 DEG C, insulation 45min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s, step (3): steel wire is put into vacuum oven, first with the heating rate to 1100 DEG C of 22 DEG C/s, insulation 4h, then the omnidistance nitrogen blowing that adopts cools, and speed is 12 DEG C/s, is cooled to 680 DEG C, insulation 35min, is then cooled to 360 DEG C with 10 DEG C/s speed, insulation 30min, and then by heating temperatures to 850 DEG C, insulation 1h, last air cooling to room temperature, by steel wire heat to 980 DEG C, insulation 5h, then water-cooled is cooled to room temperature with the speed of 15 DEG C/s, step (4): then put into drying oven, drying temperature is 160 DEG C, and time of drying is 5h, and then air cooling is to room temperature, defect detecting test and inspection size.
embodiment 2
The present embodiment provides high-strength prestressed steel wire, and Chemical Composition is by mass percentage: C:0.58%, Ni:3.8%, Cr:7.8%, Si:2.58%, Mn:1.28%, Cu:1.92%, V:4.25%, Mo:4.15%, P:0.05%, W:0.15%, compound rare-earth: 2.35%, surplus is Fe, compound rare-earth is by mass percentage: Gd:21.8%, Pr:6.28%, Er:11.5%, Ho:11.2%, Nd:8.5%, Sm:12.9%, Tb:22.5%, and surplus is La, this invention also provides the heat treating method of this high-strength prestressed steel wire, the method is carried out according to the following steps: step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 780 DEG C, insulation 8h, then put into after oil cooling pond soaks 30min, adopt double normalizing+double tempering, first time normalizing: temperature is at 730 DEG C, 8min is incubated after temperature, then air cooling is to room temperature, carry out second time normalizing again: temperature is at 785 DEG C, 13min is incubated after temperature, then with the speed water-cooled of 15 DEG C/s to room temperature, then first time tempering: Heating temperature is 860 DEG C, is incubated 12min after temperature, then carries out second time tempering after air cooling to room temperature, Heating temperature is 935 DEG C, after temperature, be incubated 22min, with the speed oil cooling of 12 DEG C/s to room temperature, step (2): first by steel wire heating to 890 DEG C, insulation 55min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s, step (3): steel wire is put into vacuum oven, first with the heating rate to 1150 DEG C of 24 DEG C/s, insulation 8h, then the omnidistance nitrogen blowing that adopts cools, and speed is 15 DEG C/s, is cooled to 690 DEG C, insulation 45min, is then cooled to 370 DEG C with 15 DEG C/s speed, insulation 35min, and then by heating temperatures to 860 DEG C, insulation 2h, last air cooling to room temperature, by steel wire heat to 985 DEG C, insulation 8h, then water-cooled is cooled to room temperature with the speed of 18 DEG C/s, step (4): then put into drying oven, drying temperature is 180 DEG C, and time of drying is 8h, and then air cooling is to room temperature, defect detecting test and inspection size.
embodiment 3
The present embodiment provides high-strength prestressed steel wire, and Chemical Composition is by mass percentage: C:0.57%, Ni:3.7%, Cr:7.5%, Si:2.57%, Mn:1.27%, Cu:1.88%, V:4.24%, Mo:4.13%, P:0.04%, W:0.13%, compound rare-earth: 2.34%, surplus is Fe, compound rare-earth is by mass percentage: Gd:21.6%, Pr:6.26%, Er:11.4%, Ho:10.9%, Nd:8.4%, Sm:12.8%, Tb:22.4%, and surplus is La, this invention also provides the heat treating method of this high-strength prestressed steel wire, the method is carried out according to the following steps: step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 770 DEG C, insulation 7h, then put into after oil cooling pond soaks 25min, adopt double normalizing+double tempering, first time normalizing: temperature is at 728 DEG C, 5min is incubated after temperature, then air cooling is to room temperature, carry out second time normalizing again: temperature is at 782 DEG C, 12min is incubated after temperature, then with the speed water-cooled of 13 DEG C/s to room temperature, then first time tempering: Heating temperature is 855 DEG C, is incubated 11min after temperature, then carries out second time tempering after air cooling to room temperature, Heating temperature is 934 DEG C, after temperature, be incubated 20min, with the speed oil cooling of 11 DEG C/s to room temperature, step (2): first by steel wire heating to 886 DEG C, insulation 50min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 713 DEG C with the speed of 12 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 540 DEG C with 14 DEG C/s speed, insulation 35min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, and then be heated to 855 DEG C, be cooled to room temperature with oil cooling with 15 DEG C/s, step (3): steel wire is put into vacuum oven, first with the heating rate to 1125 DEG C of 23 DEG C/s, insulation 7h, then the omnidistance nitrogen blowing that adopts cools, and speed is 13 DEG C/s, is cooled to 685 DEG C, insulation 42min, is then cooled to 365 DEG C with 13 DEG C/s speed, insulation 32min, and then by heating temperatures to 858 DEG C, insulation 1.7h, last air cooling to room temperature, by steel wire heat to 982 DEG C, insulation 6h, then water-cooled is cooled to room temperature with the speed of 16 DEG C/s, step (4): then put into drying oven, drying temperature is 165 DEG C, and time of drying is 6h, and then air cooling is to room temperature, defect detecting test and inspection size.
Like this by the technical scheme of above embodiment, this high-strength prestressed steel wire not only intensity is high, long service life, production cost is low, thermal treatment process is simple, improves that it is corrosion-resistant, rub resistance and work-ing life, and the quantity that can reduce steel wire in bamboo product just can reach its design requirements, cost-saving, and reduce the complexity of structure, facilitate workman to construct, working efficiency is high, security is high, steady quality.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (8)
1. a high-strength prestressed steel wire, is characterized in that: Chemical Composition is by mass percentage: C:0.56-0.58%, Ni:3.6-3.8%, Cr:7.4-7.8%, Si:2.55-2.58%, Mn:1.26-1.28%, Cu:1.85-1.92%, V:4.23-4.25%, Mo:4.12-4.15%, P:0.02-0.05%, W:0.12-0.15%, compound rare-earth: 2.32-2.35%, surplus is Fe;
Described compound rare-earth is by mass percentage: Gd:21.5-21.8%, Pr:6.25-6.28%, Er:11.2-11.5%, Ho:10.8-11.2%, Nd:8.2-8.5%, Sm:12.7-12.9%, Tb:22.3-22.5%, and surplus is La.
2. high-strength prestressed steel wire according to claim 1, is characterized in that: Chemical Composition is by mass percentage: C:0.56%, Ni:3.6%, Cr:7.4%, Si:2.55%, Mn:1.26%, Cu:1.85%, V:4.23%, Mo:4.12%, P:0.02%, W:0.12%, compound rare-earth: 2.32%, surplus is Fe;
Described compound rare-earth is by mass percentage: Gd:21.5%, Pr:6.25%, Er:11.2%, Ho:10.8%, Nd:8.2%, Sm:12.7%, Tb:22.3%, and surplus is La.
3. high-strength prestressed steel wire according to claim 1, is characterized in that: Chemical Composition is by mass percentage: C:0.58%, Ni:3.8%, Cr:7.8%, Si:2.58%, Mn:1.28%, Cu:1.92%, V:4.25%, Mo:4.15%, P:0.05%, W:0.15%, compound rare-earth: 2.35%, surplus is Fe;
Described compound rare-earth is by mass percentage: Gd:21.8%, Pr:6.28%, Er:11.5%, Ho:11.2%, Nd:8.5%, Sm:12.9%, Tb:22.5%, and surplus is La.
4. high-strength prestressed steel wire according to claim 1, is characterized in that: Chemical Composition is by mass percentage: C:0.57%, Ni:3.7%, Cr:7.5%, Si:2.57%, Mn:1.27%, Cu:1.88%, V:4.24%, Mo:4.13%, P:0.04%, W:0.13%, compound rare-earth: 2.34%, surplus is Fe;
Described compound rare-earth is by mass percentage: Gd:21.6%, Pr:6.26%, Er:11.4%, Ho:10.9%, Nd:8.4%, Sm:12.8%, Tb:22.4%, and surplus is La.
5. a heat treating method for high-strength prestressed steel wire, is characterized in that: the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 760-780 DEG C, insulation 5-8h, then put into after oil cooling pond soaks 20-30min, adopt double normalizing+double tempering, first time normalizing: temperature is at 725-730 DEG C, 6-8min is incubated after temperature, then air cooling is to room temperature, carry out second time normalizing again: temperature is at 780-785 DEG C, after temperature, be incubated 10-13min, then with the speed water-cooled of 10-15 DEG C/s to room temperature; Then first time tempering: Heating temperature is 850-860 DEG C, is incubated 10-12min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 930-935 DEG C, after temperature, be incubated 18-22min, with the speed oil cooling of 8-12 DEG C/s to room temperature;
Step (2): first by steel wire heating to 880-890 DEG C, insulation 45-55min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 710-715 DEG C with the speed of 11-13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 538-545 DEG C with 10-15 DEG C/s speed, insulation 30-40min, then use water-cooled with the speed cool to room temperature of 12-15 DEG C/s, and then be heated to 850-860 DEG C, be cooled to room temperature with oil cooling with 13-16 DEG C/s;
Step (3): steel wire is put into vacuum oven, first with the heating rate of 22-24 DEG C/s to 1100-1150 DEG C, insulation 4-8h, then the omnidistance nitrogen blowing that adopts cools, speed is 12-15 DEG C/s, be cooled to 680-690 DEG C, insulation 35-45min, is then cooled to 360-370 DEG C with 10-15 DEG C/s speed, insulation 30-35min, and then by heating temperatures to 850-860 DEG C, insulation 1-2h, steel wire heat, to room temperature, is arrived 980-985 DEG C by last air cooling, insulation 5-8h, then water-cooled is cooled to room temperature with the speed of 15-18 DEG C/s;
Step (4): then put into drying oven, drying temperature is 160-180 DEG C, and time of drying is 5-8h, and then air cooling is to room temperature, defect detecting test and inspection size.
6. the heat treating method of high-strength prestressed steel wire according to claim 5, is characterized in that: the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 760 DEG C, insulation 5h, then puts into after oil cooling pond soaks 20min, adopts double normalizing+double tempering, first time normalizing: temperature is at 725 DEG C, after temperature, be incubated 6min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 780 DEG C, after temperature, be incubated 10min, then with the speed water-cooled of 10 DEG C/s to room temperature; Then first time tempering: Heating temperature is 850 DEG C, is incubated 10min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 930 DEG C, after temperature, be incubated 18min, with the speed oil cooling of 8 DEG C/s to room temperature;
Step (2): first by steel wire heating to 880 DEG C, insulation 45min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s;
Step (3): steel wire is put into vacuum oven, first with the heating rate to 1100 DEG C of 22 DEG C/s, insulation 4h, then the omnidistance nitrogen blowing that adopts cools, and speed is 12 DEG C/s, is cooled to 680 DEG C, insulation 35min, is then cooled to 360 DEG C with 10 DEG C/s speed, insulation 30min, and then by heating temperatures to 850 DEG C, insulation 1h, last air cooling to room temperature, by steel wire heat to 980 DEG C, insulation 5h, then water-cooled is cooled to room temperature with the speed of 15 DEG C/s;
Step (4): then put into drying oven, drying temperature is 160 DEG C, and time of drying is 5h, and then air cooling is to room temperature, defect detecting test and inspection size.
7. the heat treating method of high-strength prestressed steel wire according to claim 5, is characterized in that: the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 780 DEG C, insulation 8h, then puts into after oil cooling pond soaks 30min, adopts double normalizing+double tempering, first time normalizing: temperature is at 730 DEG C, after temperature, be incubated 8min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 785 DEG C, after temperature, be incubated 13min, then with the speed water-cooled of 15 DEG C/s to room temperature; Then first time tempering: Heating temperature is 860 DEG C, is incubated 12min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 935 DEG C, after temperature, be incubated 22min, with the speed oil cooling of 12 DEG C/s to room temperature;
Step (2): first by steel wire heating to 890 DEG C, insulation 55min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 715 DEG C with the speed of 13 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 545 DEG C with 15 DEG C/s speed, insulation 40min, then use water-cooled with the speed cool to room temperature of 15 DEG C/s, and then be heated to 860 DEG C, be cooled to room temperature with oil cooling with 16 DEG C/s;
Step (3): steel wire is put into vacuum oven, first with the heating rate to 1150 DEG C of 24 DEG C/s, insulation 8h, then the omnidistance nitrogen blowing that adopts cools, and speed is 15 DEG C/s, is cooled to 690 DEG C, insulation 45min, is then cooled to 370 DEG C with 15 DEG C/s speed, insulation 35min, and then by heating temperatures to 860 DEG C, insulation 2h, last air cooling to room temperature, by steel wire heat to 985 DEG C, insulation 8h, then water-cooled is cooled to room temperature with the speed of 18 DEG C/s;
Step (4): then put into drying oven, drying temperature is 180 DEG C, and time of drying is 8h, and then air cooling is to room temperature, defect detecting test and inspection size.
8. the heat treating method of high-strength prestressed steel wire according to claim 5, is characterized in that: the method is carried out according to the following steps:
Step (1): utilize ultrasonic cleaner to clean cooled Steel Wire Surface, first steel wire is put into intermediate frequency furnace and be heated to 770 DEG C, insulation 7h, then puts into after oil cooling pond soaks 25min, adopts double normalizing+double tempering, first time normalizing: temperature is at 728 DEG C, after temperature, be incubated 5min, then air cooling is to room temperature, then carries out second time normalizing: temperature is at 782 DEG C, after temperature, be incubated 12min, then with the speed water-cooled of 13 DEG C/s to room temperature; Then first time tempering: Heating temperature is 855 DEG C, is incubated 11min after temperature, then carries out second time tempering after air cooling to room temperature; Heating temperature is 934 DEG C, after temperature, be incubated 20min, with the speed oil cooling of 11 DEG C/s to room temperature;
Step (2): first by steel wire heating to 886 DEG C, insulation 50min, then the method for oil cooling and water-cooling structure is adopted, first use oil cooling to be cooled to 713 DEG C with the speed of 12 DEG C/s, then use water-cooled to be cooled to room temperature, by steel wire heating to 540 DEG C with 14 DEG C/s speed, insulation 35min, then use water-cooled with the speed cool to room temperature of 13 DEG C/s, and then be heated to 855 DEG C, be cooled to room temperature with oil cooling with 15 DEG C/s;
Step (3): steel wire is put into vacuum oven, first with the heating rate to 1125 DEG C of 23 DEG C/s, insulation 7h, then the omnidistance nitrogen blowing that adopts cools, and speed is 13 DEG C/s, is cooled to 685 DEG C, insulation 42min, is then cooled to 365 DEG C with 13 DEG C/s speed, insulation 32min, and then by heating temperatures to 858 DEG C, insulation 1.7h, last air cooling to room temperature, by steel wire heat to 982 DEG C, insulation 6h, then water-cooled is cooled to room temperature with the speed of 16 DEG C/s;
Step (4): then put into drying oven, drying temperature is 165 DEG C, and time of drying is 6h, and then air cooling is to room temperature, defect detecting test and inspection size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410622162.9A CN104328352B (en) | 2014-11-07 | 2014-11-07 | A kind of high-strength prestressed steel wire and its heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410622162.9A CN104328352B (en) | 2014-11-07 | 2014-11-07 | A kind of high-strength prestressed steel wire and its heat treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104328352A true CN104328352A (en) | 2015-02-04 |
| CN104328352B CN104328352B (en) | 2017-03-01 |
Family
ID=52403157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410622162.9A Expired - Fee Related CN104328352B (en) | 2014-11-07 | 2014-11-07 | A kind of high-strength prestressed steel wire and its heat treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104328352B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789900A (en) * | 2015-03-20 | 2015-07-22 | 苏州科胜仓储物流设备有限公司 | High-strength impact-resistant metal wire for shelf back mesh and treatment process thereof |
| CN106893948A (en) * | 2017-01-19 | 2017-06-27 | 辽宁通达建材实业有限公司 | A kind of corrosion-resistant prestress pipe steel wire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198250A (en) * | 1981-05-28 | 1982-12-04 | Daido Steel Co Ltd | High speed tool steel |
| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN102644036A (en) * | 2012-04-28 | 2012-08-22 | 江苏天舜金属材料集团有限公司 | High-strength reinforcing steel bar with spiral fins and processing method of high-strength reinforcing steel bar |
| CN103498104A (en) * | 2013-09-26 | 2014-01-08 | 江苏天舜金属材料集团有限公司 | 630 MPa-grade high-strength hot-rolled reinforced bar and production process thereof |
| CN103643125A (en) * | 2013-11-21 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Steel bar for prestress concrete, and production process thereof |
-
2014
- 2014-11-07 CN CN201410622162.9A patent/CN104328352B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198250A (en) * | 1981-05-28 | 1982-12-04 | Daido Steel Co Ltd | High speed tool steel |
| JPS58113352A (en) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | Alloy steel for hot working |
| CN102644036A (en) * | 2012-04-28 | 2012-08-22 | 江苏天舜金属材料集团有限公司 | High-strength reinforcing steel bar with spiral fins and processing method of high-strength reinforcing steel bar |
| CN103498104A (en) * | 2013-09-26 | 2014-01-08 | 江苏天舜金属材料集团有限公司 | 630 MPa-grade high-strength hot-rolled reinforced bar and production process thereof |
| CN103643125A (en) * | 2013-11-21 | 2014-03-19 | 江苏天舜金属材料集团有限公司 | Steel bar for prestress concrete, and production process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789900A (en) * | 2015-03-20 | 2015-07-22 | 苏州科胜仓储物流设备有限公司 | High-strength impact-resistant metal wire for shelf back mesh and treatment process thereof |
| CN106893948A (en) * | 2017-01-19 | 2017-06-27 | 辽宁通达建材实业有限公司 | A kind of corrosion-resistant prestress pipe steel wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104328352B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104313484B (en) | Steel and Technology for Heating Processing thereof for high-strength anti-seismic corrosion-resistant steel bar | |
| CN104313499A (en) | High-strength steel bar for bridges and heat treatment technology of same | |
| CN102094153B (en) | Preparation method of high-strength high-toughness alloy steel for bolts | |
| CN100516272C (en) | High resistivity high magnetic conduction martensite-ferrite diphasic stainless steel and thermal treatment technique thereof | |
| CN103710628A (en) | Large-thickness hydrogenating 14Cr1MoR steel plate and production method thereof | |
| CN109136653A (en) | For the nickel-base alloy of nuclear power generating equipment and its manufacturing method of hot rolled plate | |
| CN102851610A (en) | Improved structural material martensite heat-resistant steel and manufacture method thereof | |
| CN104342603A (en) | Alloy material for improving corrosion resistance of valve and treatment process thereof | |
| CN105112765A (en) | High impact high chromium cast iron plate hammer and preparation method thereof | |
| CN104561837A (en) | Steel plate made of pressure vessel steel ASTMA387CL11Gr2 and production method thereof | |
| CN103639402B (en) | The manufacture method of the coated prestress wire of a kind of nichrome powder | |
| CN103643196B (en) | The manufacture method of the coated compressor wire of a kind of alloy coat | |
| CN104328352A (en) | High-strength prestressed wire and heat treatment method thereof | |
| CN104513929B (en) | A kind of resistance wire alloy and its pre-oxidization treatment method | |
| CN101892373A (en) | Heat treatment technology for low-temperature high impact toughness medium-thickness steel plate | |
| CN104313500B (en) | A kind of high-strength corrosion-resistant steel bar steel containing rare earth element and Technology for Heating Processing thereof | |
| CN104195571B (en) | Treatment technique capable of enhancing wear resistance of bearing | |
| CN109852778B (en) | Heat treatment process for grain refinement of 10Cr9MoW2VNbBN | |
| CN105648347B (en) | A kind of high-wear-resistant alloy steel liner plate production technology | |
| CN104593690A (en) | Ingredient ratio and heat treatment process of alloy steel material | |
| CN111705195B (en) | Precipitation strengthening heat treatment process for Nb-containing austenitic heat-resistant steel | |
| CN102181787A (en) | Refractory corrosion-resisting steel as well as preparation and heat treatment method thereof | |
| CN104372260A (en) | High-strength steel drawbar and heat treatment method thereof | |
| CN106555121A (en) | A kind of rare earth alloy steel for high ferro | |
| CN108823488A (en) | The ferrite heat resistant steel and its heat treatment process of a kind of resistance to high temperature oxidation and resistance to salt hot corrosion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Shiqi Inventor after: Shang Gang Inventor after: Liang Weifeng Inventor after: Li Chao Inventor after: Wang Chang Inventor after: Zhang Peng Inventor after: Zhou Tietou Inventor after: Xu Xinhui Inventor after: Yang Yongtao Inventor after: Ye Yuepeng Inventor after: Yang Jincai Inventor after: Zhao Xinfang Inventor after: Zhang Hongwei Inventor after: Wang Zhanguang Inventor before: Yao Shengfa Inventor before: Wu Haiyang |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170126 Address after: 410003 Hunan province Changsha Kaifu District, Douling Road No. 41 Building 1 Room 201 1 Applicant after: Liu Shiqi Applicant after: Shang Gang Applicant after: Liang Weifeng Applicant after: Li Chao Applicant after: Wang Chang Applicant after: Zhang Peng Applicant after: Zhou Tietou Applicant after: Xu Xinhui Applicant after: Yang Yongtao Applicant after: Ye Yuepeng Applicant after: Yang Jincai Applicant after: Zhao Xinfang Applicant after: Zhang Hongwei Applicant after: Wang Zhanguang Address before: 212219 Jiangsu city of Zhenjiang province Yangzhong City eight Town Bridge Industrial Zone Applicant before: Jiangsu Tianshun Metal Material Group Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20171107 |