CN103639650B - A kind of high surrender degree is without the manufacture method of bonding prestress rod iron - Google Patents
A kind of high surrender degree is without the manufacture method of bonding prestress rod iron Download PDFInfo
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- CN103639650B CN103639650B CN201310588719.7A CN201310588719A CN103639650B CN 103639650 B CN103639650 B CN 103639650B CN 201310588719 A CN201310588719 A CN 201310588719A CN 103639650 B CN103639650 B CN 103639650B
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- 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
- B21C37/042—Manufacture of coated wire or bars
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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Abstract
The invention discloses the manufacture method of a kind of high surrender degree without bonding prestress rod iron, this rod iron has and facilitates workman to construct, cost is low, intensity is high, ductility is good, anti-delayed fracture resistance is strong, save the advantage of steel, and there is comparatively ideal insulation effect, environmental pollution can be reduced, the present invention adopts steel structure anti-corrosion paint, there is good mechanical performance and excellent antiseptic property, to weather and oil water mixture etc., all there is good stability, and can furnishing shades of colour as required, after using steel structural traverse, have good visual effect, elegant in appearance on decoration, because the anticorrosion deadline time of this coating is long, can also be cost-saving.
Description
Technical field
The present invention relates to a kind of manufacture method of metallic article, especially relate to a kind of manufacture method of high surrender degree prestressing without bondn rod iron.
Background technology
At present, domestic and international high speed railway track replaces Ballast track with non-fragment orbit, is wherein most widely used with the Bock slab track of Germany and modern architecture in Japan plate-type ballastless track.
But the prestressed steel bar outside used in German Bock slab track does not arrange any insulating protective layer, and realize the insulation in track plates between prestressed steel bar by insulating fastener, insulation effect is undesirable.Japan adopts the way applying modified pitch on prestressed steel bar, although coating modified pitch can improve the insulating corrosion performance of prestressed steel bar, can cause environmental pollution in work progress.
Meanwhile, the heavy construction of present stage all uses prestressing force to roll solidifying soil steel strand wires etc. to carry out concreting, when construction, ground tackle need be adopted to fasten two ends fix, just can pour into a mould, although also fixation problem can be solved preferably, but the problems such as ground tackle cost is higher, and working procedure is loaded down with trivial details.And rod iron for building is as a kind of xoncrete structure construction(al)steel; it is HRB335, HRB400 steel that common rod iron major part uses; a small amount of employing HRB500 steel; though above-mentioned common rod iron is wider at China's building construction application surface; particularly floorboard class rod iron due to the yield strength of rod iron lower; by human activity load action in work progress; often make the stressed flexural deformation of upper strata rod iron of double-layer double-direction rod iron; the structure restriction of rod iron concrete protective thickness can not be met and produce crack, causing construction quality hidden danger.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming that above prior art exists, the manufacture method of a kind of high surrender degree without bonding prestress rod iron is proposed, this rod iron have facilitate workman to construct, cost is low, intensity is high, good, the anti-delayed fracture resistance of ductility is strong, save the advantage of steel, and there is comparatively ideal insulation effect, can environmental pollution be reduced.
In order to solve above technical problem, the invention provides a kind of high surrender degree without the manufacture method of bonding prestress rod iron, comprising the following steps:
Step 1: take potassium steel as base-material, base-material and alloy are added in stove and tentatively smelts to obtain blank, the temperature of preliminary smelting is 1250-1300 DEG C, smelting terminates rear insulation 0.5-0.75h, the addition of alloy is the 2-4% of base-material weight, the mass percent component of alloy is: carbon: 0.55-0.65%, silicon: 0.9-1.1%, manganese: 0.75-0.8%, chromium: 1.07-1.16%, molybdenum: 0.13-0.24%, tungsten: 0.03-0.07%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.02-0.035%, aluminium: 0.01-0.03%, niobium: 0.17-0.25%, 0-0.07% residual elements, all the other are Fe, wherein add v element by adding ferrovanadium nitride,
Step 2: the blank that step 1 is obtained adopt water-cooled with the cooldown rate of 18-20 DEG C/s by blank water-cooled to room temperature, carry out tempering again, the temperature of tempering is 1450-1500 DEG C, tempering time is 5-7 minute, adopt water-cooled after tempering with the cooldown rate of 10-12 DEG C/s by blank water-cooled to 400 DEG C, then in quenching unit, carry out short quenching with quenching liquid, short hardening heat is 1130-1150 DEG C, the short cool time is 20-23 second, and quenching is placed on cold bed and is cooled to room temperature;
Step 3: become band to be with or without the rod iron of screw thread to the blank material hot-rolled obtained in step 2;
Step 4: preliminary drawing is carried out to the blank obtained in step 3, preliminary drawing temperature is 800-850 DEG C, then vaporific quenching liquid is adopted to make it be cooled fast to room temperature, again rod iron is heated to 900-950 DEG C, and carry out the rod iron that fine drawing becomes required size, then adopt high pressure spray jetting or quenching liquid to be cooled to 500 DEG C, be incubated 30-50 second;
Step 5: first adopt water-cooled fast by rod iron water-cooled to 200 DEG C to the rod iron obtained in step 4, then air cooling is to room temperature;
Step 6: to the rod iron obtained in step 5, cut according to required size, and the threaded portion at two ends is sealed with wax;
Step 7: carry out airless spraying steel structure anti-corrosion paint to the barred body part of the rod iron that step 6 obtains, steel structure anti-corrosion paint sprays at twice, carries out second time spraying again after the steel structure anti-corrosion paint drying of first time spraying;
Step 8: the rod iron obtained in step 7 is wrapped up plastics by injection machine, then carries out the examination and test of products and puts preservation in storage.
The technical scheme that the present invention limits further is:
Aforementioned alloy comprises each component of following mass percent: carbon: 0.55%, silicon: 1%, manganese: 0.8%, chromium: 1.15%, molybdenum: 0.13%, tungsten: 0.07, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.035%, aluminium: 0.017%, niobium: 0.25%, 0-0.07% residual elements, and all the other are Fe.
Aforementioned alloy comprises each component of following mass percent: carbon: 0.6%, silicon: 0.9%, manganese: 0.77%, chromium: 1.16%, molybdenum: 0.24%, tungsten: 0.05%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.025%, aluminium: 0.03%, niobium: 0.19%, 0-0.07% residual elements, and all the other are Fe.
Aforementioned alloy comprises each component of following mass percent: carbon: 0.65%, silicon: 1.1%, manganese: 0.75%, chromium: 1.07%, molybdenum: 0.19%, tungsten: 0.03%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.02%, aluminium: 0.01%, niobium: 0.17%, 0-0.07% residual elements, and all the other are Fe.
Further, in abovementioned steps 7, steel structure anti-corrosion paint adopts A, B bi-component to form, and A, B component form mass percent and be respectively:
Component A: organosilicon modified crylic acid resin paint: 35-70%, biuret polyisocyanate: 20-35%, defoamer: 0.5-0.9%, anti-settling agent: 0.5-2%;
B component: thermosetting acrylic resin: 40-55%, water absorbing agent: 20-40%, wear-resisting pigment: 5-10%, zinc phosphate rust-preventive pigment: 6-9%, talcum powder: 7-9%, crack resistence pigment: 3-5%.
In abovementioned steps 6, after first time spraying steel structure anti-corrosion paint, first dry 0.2h, then leave standstill process 2.5h to its natural drying.
The invention has the beneficial effects as follows:
In present component owing to adding, manganese: 0.75-0.8%, chromium: 1.07-1.16%, molybdenum: 0.13-0.24%, thus the atom active of C and N element can be improved, the air mass that each atom is formed can form strong interaction with dislocation, pinning dislocation, produce yield point elongation, make to need the external world to provide larger stress just can start dislocation.
Adds vanadium in present component, the toughness of steel, elasticity, wearability can be improved and resist performance, and making steel tight, and vanadium in steel is highly stable, not easily by hydrochloric acid, sulfuric acid decompose.Add the steel hardenability after vanadium good, the whole cross section of steel part can be made to obtain the mechanical property of uniformity and the quenching medium that steel part quenching stress is little can be selected, to reduce distortion and cracking.
Aluminium element is added in the present invention, can the grain structure of refinement steel, prevent the timeliness of mild steel, improve steel toughness at low temperatures, and strengthen the non-oxidizability of steel, wearability and fatigue strength.Add niobium element in the present invention, it is larger with the affinity of C, adds after in steel and has precedence over C combination generation niobium carbide (NbC), effectively prevent intercrystalline corrosion.Add W elements in the present invention, red hardness and the heat resistance of steel can be improved, and the wearability of steel can be improved.
In production technology of the present invention, by after the blank heating of having smelted through cooling, then tempering, cool again, then quench, be cooled to normal temperature, carbide can be made fully to dissolve on the one hand, even diffusion, avoids carbide and causes intercrystalline corrosion and spot corrosion to exceed standard in the precipitation of intergranular, ensure that the ferrite content of material; On the other hand, material solid solution can also be made abundant, avoid heat treatment mode and heat corrosion rate that uneven solid solution inequality brings and to exceed standard and hardness exceeds standard, thus bring the breakthrough of another technical indicator, obtain beyond thought technique effect.
The present invention adopts steel structure anti-corrosion paint, there is good mechanical performance and excellent antiseptic property, to weather and oil water mixture etc., all there is good stability, and can furnishing shades of colour as required, after using steel structural traverse, have good visual effect, elegant in appearance on decoration, because the anticorrosion deadline time of this coating is long, can also be cost-saving.
Use for steel structure anti-corrosion paint in the present invention adopts airless spraying mode, coating high-pressure injection is atomized into tiny particulate by this mode, it is made to be distributed in surface of the work equably, can be formed smooth, fine and close coating, and airless spraying mode adopts high-pressure injection to be atomized, paint particles is made to obtain strong kinetic energy, paint particles whereby kinetic energy is penetrated and is reached among workpiece space, thus make coating closeer, strengthen with the mechanical snap power of workpiece, adhesive force improves, effective prolongation coating life, due to the precise manner of spraying, coating can also be saved, cut the waste.
Detailed description of the invention
Embodiment 1
Present embodiments provide a kind of high surrender degree without the manufacture method of bonding prestress rod iron, comprise the following steps:
Step 1: take potassium steel as base-material, base-material and alloy are added in stove and tentatively smelts to obtain blank, the temperature of preliminary smelting is 1250-1300 DEG C, smelting terminates rear insulation 0.5-0.75h, the addition of alloy is the 2-4% of base-material weight, alloy comprises each component of following mass percent: carbon: 0.55%, silicon: 1%, manganese: 0.8%, chromium: 1.15%, molybdenum: 0.13%, tungsten: 0.07%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.035%, aluminium: 0.017%, niobium: 0.25%, 0-0.07% residual elements, all the other are Fe, wherein add v element by adding ferrovanadium nitride,
Step 2: the blank that step 1 is obtained adopt water-cooled with the cooldown rate of 18-20 DEG C/s by blank water-cooled to room temperature, carry out tempering again, the temperature of tempering is 1450-1500 DEG C, tempering time is 5-7 minute, adopt water-cooled after tempering with the cooldown rate of 10-12 DEG C/s by blank water-cooled to 400 DEG C, then in quenching unit, carry out short quenching with quenching liquid, short hardening heat is 1130-1150 DEG C, the short cool time is 20-23 second, and quenching is placed on cold bed and is cooled to room temperature;
Step 3: become band to be with or without the rod iron of screw thread to the blank material hot-rolled obtained in step 2;
Step 4: preliminary drawing is carried out to the blank obtained in step 3, preliminary drawing temperature is 800-850 DEG C, then vaporific quenching liquid is adopted to make it be cooled fast to room temperature, again rod iron is heated to 900-950 DEG C, and carry out the rod iron that fine drawing becomes required size, then adopt high pressure spray jetting or quenching liquid to be cooled to 500 DEG C, be incubated 30-50 second;
Step 5: first adopt water-cooled fast by rod iron water-cooled to 200 DEG C to the rod iron obtained in step 4, then air cooling is to room temperature;
Step 6: to the rod iron obtained in step 5, cut according to required size, and the threaded portion at two ends is sealed with wax;
Step 7: airless spraying steel structure anti-corrosion paint is carried out to the barred body part of the rod iron that step 6 obtains, steel structure anti-corrosion paint sprays at twice, wherein steel structure anti-corrosion paint adopts A, B bi-component to form, A, B component form mass percent and are respectively: component A: organosilicon modified crylic acid resin paint: 35-70%, biuret polyisocyanate: 20-35%, defoamer: 0.5-0.9%, anti-settling agent: 0.5-2%; B component: thermosetting acrylic resin: 40-55%, water absorbing agent: 20-40%, wear-resisting pigment: 5-10%, zinc phosphate rust-preventive pigment: 6-9%, talcum powder: 7-9%, crack resistence pigment: 3-5%.
By first time, the steel structure anti-corrosion paint of spraying first dries 0.2h, after then leaving standstill process 2.5h to its natural drying, then carries out second time spraying;
Step 8: the rod iron obtained in step 7 is wrapped up plastics by injection machine, then carries out the examination and test of products and puts preservation in storage.
Embodiment 2
Present embodiments provide a kind of high surrender degree without the manufacture method of bonding prestress rod iron, comprise the following steps:
Step 1: take potassium steel as base-material, base-material and alloy are added in stove and tentatively smelts to obtain blank, the temperature of preliminary smelting is 1250-1300 DEG C, smelting terminates rear insulation 0.5-0.75h, the addition of alloy is the 2-4% of base-material weight, alloy comprises each component of following mass percent: carbon: 0.6%, silicon: 0.9%, manganese: 0.77%, chromium: 1.16%, molybdenum: 0.24%, tungsten: 0.05%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.025%, aluminium: 0.03%, niobium: 0.19%, 0-0.07% residual elements, all the other are Fe, wherein add v element by adding ferrovanadium nitride,
Step 2: the blank that step 1 is obtained adopt water-cooled with the cooldown rate of 18-20 DEG C/s by blank water-cooled to room temperature, carry out tempering again, the temperature of tempering is 1450-1500 DEG C, tempering time is 5-7 minute, adopt water-cooled after tempering with the cooldown rate of 10-12 DEG C/s by blank water-cooled to 400 DEG C, then in quenching unit, carry out short quenching with quenching liquid, short hardening heat is 1130-1150 DEG C, the short cool time is 20-23 second, and quenching is placed on cold bed and is cooled to room temperature;
Step 3: become band to be with or without the rod iron of screw thread to the blank material hot-rolled obtained in step 2;
Step 4: preliminary drawing is carried out to the blank obtained in step 3, preliminary drawing temperature is 800-850 DEG C, then vaporific quenching liquid is adopted to make it be cooled fast to room temperature, again rod iron is heated to 900-950 DEG C, and carry out the rod iron that fine drawing becomes required size, then adopt high pressure spray jetting or quenching liquid to be cooled to 500 DEG C, be incubated 30-50 second;
Step 5: first adopt water-cooled fast by rod iron water-cooled to 200 DEG C to the rod iron obtained in step 4, then air cooling is to room temperature;
Step 6: to the rod iron obtained in step 5, cut according to required size, and the threaded portion at two ends is sealed with wax;
Step 7: airless spraying steel structure anti-corrosion paint is carried out to the barred body part of the rod iron that step 6 obtains, steel structure anti-corrosion paint sprays at twice, wherein steel structure anti-corrosion paint adopts A, B bi-component to form, A, B component form mass percent and are respectively: component A: organosilicon modified crylic acid resin paint: 35-70%, biuret polyisocyanate: 20-35%, defoamer: 0.5-0.9%, anti-settling agent: 0.5-2%; B component: thermosetting acrylic resin: 40-55%, water absorbing agent: 20-40%, wear-resisting pigment: 5-10%, zinc phosphate rust-preventive pigment: 6-9%, talcum powder: 7-9%, crack resistence pigment: 3-5%.
By first time, the steel structure anti-corrosion paint of spraying first dries 0.2h, after then leaving standstill process 2.5h to its natural drying, then carries out second time spraying;
Step 8: the rod iron obtained in step 7 is wrapped up plastics by injection machine, then carries out the examination and test of products and puts preservation in storage.
Embodiment 3
Present embodiments provide a kind of high surrender degree without the manufacture method of bonding prestress rod iron, comprise the following steps:
Step 1: take potassium steel as base-material, base-material and alloy are added in stove and tentatively smelts to obtain blank, the temperature of preliminary smelting is 1250-1300 DEG C, smelting terminates rear insulation 0.5-0.75h, the addition of alloy is the 2-4% of base-material weight, alloy comprises each component of following mass percent: carbon: 0.65%, silicon: 1.1%, manganese: 0.75%, chromium: 1.07%, molybdenum: 0.19%, tungsten: 0.03%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.02%, aluminium: 0.01%, niobium: 0.17%, 0-0.07% residual elements, all the other are Fe, wherein add v element by adding ferrovanadium nitride,
Step 2: the blank that step 1 is obtained adopt water-cooled with the cooldown rate of 18-20 DEG C/s by blank water-cooled to room temperature, carry out tempering again, the temperature of tempering is 1450-1500 DEG C, tempering time is 5-7 minute, adopt water-cooled after tempering with the cooldown rate of 10-12 DEG C/s by blank water-cooled to 400 DEG C, then in quenching unit, carry out short quenching with quenching liquid, short hardening heat is 1130-1150 DEG C, the short cool time is 20-23 second, and quenching is placed on cold bed and is cooled to room temperature;
Step 3: become band to be with or without the rod iron of screw thread to the blank material hot-rolled obtained in step 2;
Step 4: preliminary drawing is carried out to the blank obtained in step 3, preliminary drawing temperature is 800-850 DEG C, then vaporific quenching liquid is adopted to make it be cooled fast to room temperature, again rod iron is heated to 900-950 DEG C, and carry out the rod iron that fine drawing becomes required size, then adopt high pressure spray jetting or quenching liquid to be cooled to 500 DEG C, be incubated 30-50 second;
Step 5: first adopt water-cooled fast by rod iron water-cooled to 200 DEG C to the rod iron obtained in step 4, then air cooling is to room temperature;
Step 6: to the rod iron obtained in step 5, cut according to required size, and the threaded portion at two ends is sealed with wax;
Step 7: airless spraying steel structure anti-corrosion paint is carried out to the barred body part of the rod iron that step 6 obtains, steel structure anti-corrosion paint sprays at twice, wherein steel structure anti-corrosion paint adopts A, B bi-component to form, A, B component form mass percent and are respectively: component A: organosilicon modified crylic acid resin paint: 35-70%, biuret polyisocyanate: 20-35%, defoamer: 0.5-0.9%, anti-settling agent: 0.5-2%; B component: thermosetting acrylic resin: 40-55%, water absorbing agent: 20-40%, wear-resisting pigment: 5-10%, zinc phosphate rust-preventive pigment: 6-9%, talcum powder: 7-9%, crack resistence pigment: 3-5%.
By first time, the steel structure anti-corrosion paint of spraying first dries 0.2h, after then leaving standstill process 2.5h to its natural drying, then carries out second time spraying;
Step 8: the rod iron obtained in step 7 is wrapped up plastics by injection machine, then carries out the examination and test of products and puts preservation in storage.
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 (4)
1. high surrender degree is without a manufacture method for bonding prestress rod iron, it is characterized in that: comprise the following steps:
Step 1: take potassium steel as base-material, base-material and alloy are added in stove and tentatively smelts to obtain blank, the temperature of described preliminary smelting is 1250-1300 DEG C, smelting terminates rear insulation 0.5-0.75h, the addition of described alloy is the 2-4% of base-material weight, the mass percent component of described alloy is: carbon: 0.55-0.65%, silicon: 0.9-1.1%, manganese: 0.75-0.8%, chromium: 1.07-1.16%, molybdenum: 0.13-0.24%, tungsten: 0.03-0.07%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.02-0.035%, aluminium: 0.01-0.03%, niobium: 0.17-0.25%, 0-0.07% residual elements, all the other are Fe, wherein add v element by adding ferrovanadium nitride,
Step 2: the blank that step 1 is obtained adopt water-cooled with the cooldown rate of 18-20 DEG C/s by blank water-cooled to room temperature, carry out tempering again, the temperature of described tempering is 1450-1500 DEG C, tempering time is 5-7 minute, adopt water-cooled after tempering with the cooldown rate of 10-12 DEG C/s by blank water-cooled to 400 DEG C, then in quenching unit, carry out short quenching with quenching liquid, described short hardening heat is 1130-1150 DEG C, the described short cool time is 20-23 second, and quenching is placed on cold bed and is cooled to room temperature;
Step 3: screwed rod iron is become to the blank material hot-rolled obtained in step 2;
Step 4: preliminary drawing is carried out to the blank obtained in step 3, described preliminary drawing temperature is 800-850 DEG C, then vaporific quenching liquid is adopted to make it be cooled fast to room temperature, again described rod iron is heated to 900-950 DEG C, and carry out the rod iron that fine drawing becomes required size, then adopt high pressure spray jetting or quenching liquid to be cooled to 500 DEG C, be incubated 30-50 second;
Step 5: first adopt water-cooled fast by rod iron water-cooled to 200 DEG C to the rod iron obtained in step 4, then air cooling is to room temperature;
Step 6: to the rod iron obtained in step 5, cut according to required size, and the threaded portion at two ends is sealed with wax;
Step 7: carry out airless spraying steel structure anti-corrosion paint to the barred body part of the rod iron that step 6 obtains, described steel structure anti-corrosion paint sprays at twice, carries out second time spraying again after the steel structure anti-corrosion paint drying of first time spraying;
Step 8: the rod iron obtained in step 7 is wrapped up plastics by injection machine, then carries out the examination and test of products and puts preservation in storage.
2. high surrender degree according to claim 1 is without the manufacture method of bonding prestress rod iron, it is characterized in that: described alloy comprises each component of following mass percent: carbon: 0.55%, silicon: 1%, manganese: 0.8%, chromium: 1.15%, molybdenum: 0.13%, tungsten: 0.07%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.035%, aluminium: 0.017%, niobium: 0.25%, 0-0.07% residual elements, all the other are Fe.
3. high surrender degree according to claim 1 is without the manufacture method of bonding prestress rod iron, it is characterized in that: described alloy comprises each component of following mass percent: carbon: 0.6%, silicon: 0.9%, manganese: 0.77%, chromium: 1.16%, molybdenum: 0.24%, tungsten: 0.05%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.025%, aluminium: 0.03%, niobium: 0.19%, 0-0.07% residual elements, all the other are Fe.
4. high surrender degree according to claim 1 is without the manufacture method of bonding prestress rod iron, it is characterized in that: described alloy comprises each component of following mass percent: carbon: 0.65%, silicon: 1.1%, manganese: 0.75%, chromium: 1.07%, molybdenum: 0.19%, tungsten: 0.03%, phosphorus: 0.025%, sulphur: 0.0075%, vanadium: 0.02%, aluminium: 0.01%, niobium: 0.17%, 0-0.07% residual elements, all the other are Fe.
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| CN201310588719.7A CN103639650B (en) | 2013-11-21 | 2013-11-21 | A kind of high surrender degree is without the manufacture method of bonding prestress rod iron |
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| CN201310588719.7A CN103639650B (en) | 2013-11-21 | 2013-11-21 | A kind of high surrender degree is without the manufacture method of bonding prestress rod iron |
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| CN103639650B true CN103639650B (en) | 2016-01-06 |
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| CN106272953A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of processing method of prestressed concrete reinforcing steel stake |
| CN108165715A (en) * | 2018-02-13 | 2018-06-15 | 葫芦岛市北方金属制品有限公司 | A kind of method using thermomechanical treatment production prestressed steel bar |
| CN116922726B (en) * | 2023-09-13 | 2023-12-01 | 河北星辰工程科技有限公司 | Slowly bond steel bar plastic-coated forming device |
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| CN101501234A (en) * | 2006-06-16 | 2009-08-05 | 克勒佐工业钢铁公司 | Duplex stainless steel |
| CN102181798A (en) * | 2011-04-07 | 2011-09-14 | 江苏天舜金属材料集团有限公司 | Processing method of high yield ratio and high plasticity steel product for prestressed concrete |
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| JP3374659B2 (en) * | 1995-06-09 | 2003-02-10 | 日本鋼管株式会社 | Ultra-high tensile ERW steel pipe and method of manufacturing the same |
| JP3892312B2 (en) * | 2002-02-04 | 2007-03-14 | 日新製鋼株式会社 | Method for manufacturing high-strength steel sheet for CRT frame |
| KR100886966B1 (en) * | 2008-09-09 | 2009-03-10 | 유림전기(주) | Manufacturing method of the clad type router bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101501234A (en) * | 2006-06-16 | 2009-08-05 | 克勒佐工业钢铁公司 | Duplex stainless steel |
| CN102181798A (en) * | 2011-04-07 | 2011-09-14 | 江苏天舜金属材料集团有限公司 | Processing method of high yield ratio and high plasticity steel product for prestressed concrete |
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