CN108927420A - A kind of the large deformation cold-drawing technology and production line of seamless steel pipe - Google Patents
A kind of the large deformation cold-drawing technology and production line of seamless steel pipe Download PDFInfo
- Publication number
- CN108927420A CN108927420A CN201710367928.7A CN201710367928A CN108927420A CN 108927420 A CN108927420 A CN 108927420A CN 201710367928 A CN201710367928 A CN 201710367928A CN 108927420 A CN108927420 A CN 108927420A
- Authority
- CN
- China
- Prior art keywords
- hollow forging
- section
- cold
- hot
- sizing
- 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
-
- 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
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- 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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
-
- 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
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
-
- 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
- B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
- B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
-
- 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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metal Extraction Processes (AREA)
- Forging (AREA)
Abstract
The present invention discloses a kind of large deformation cold-drawing technology of seamless steel pipe and production line, technique comprise the following steps：Pipe hot-puncturing process → hollow forging hot rolling cold bed conveys and → hollow forging hot-loading and hot-conveying → hollow forging pickling → hollow forging phosphatization → hollow forging drying → hollow forging lubrication of taking the lead online, cold-drawn process uses compound external mold, it is substantially in horn-like, including die hole, die hole includes the sizing reduction section, tube reducing wall-reducting section and sizing section successively to successively decrease along axial internal diameter, the internal diameter of sizing reduction section is along axial gradual change and inner wall bus is in arc line shaped, the internal diameter of tube reducing wall-reducting section along axial gradual change and inner wall bus it is linear, the internal diameter of sizing section along axial constant and inner wall bus it is linear.The compression of cold working passage can be realized by this technique, convenient for the rapid shaping of finished size, and the finish of inside and outside wall is unaffected；The thick-walled pipe suitable for bigbore, while reducing steel pipe's production processing cost.
Description
Technical field
The present invention relates to steel pipe forming fields, and in particular to a kind of the large deformation cold-drawing technology and production line of seamless steel pipe.
Background technique
Seamless steel pipe has hollow section, a large amount of pipelines for being used as trandfer fluid, such as transfer oil, natural gas, coal gas and water
And pipeline of certain solid materials etc..Steel pipe is compared with the solid steel such as round steel, when bending resistance torsional strength is identical, weight compared with
Gently, it is a kind of economic section steel products, is widely used in manufacture structural member and machine components, such as oil drill rocker, truck drive shaft, voluntarily
Steel feet hand cradle in vehicle frame and construction etc. manufactures ring-shaped work pieces with steel pipe, and stock utilization can be improved, and simplifies manufacture
Process is saved material and machining period, is manufactured extensively with steel pipe.
Single pass lengthening coefficient is 1.2-1.3 when cold-drawing seamless tube in the prior art, and process is generally successively
By heat treatment procedure, pickling process and cold-drawn process, wherein heat treatment procedure is：Hot-puncturing process → taking the lead offline → is managed
Material annealing, rhythm of production is not compact enough, and energy consumption is larger, and pickling process is：Sulfuric acid washing → phosphatization → lubrication → row's hydrogen,
Cold-drawn process uses Soviet Union's formula external mold, and the calibrating strap for formula external mold of reviving is narrow, horn mouth is small, and single pass sizing reduction 10-12mm, single pass subtracts
Wall amount 0.5mm-0.7mm, the consumption of internal model is larger, and lavishes labor on.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of large deformation cold-drawing technology of seamless steel pipe,
The compression of cold working passage can be realized by this technique, convenient for the rapid shaping of finished size, and the finish of inside and outside wall not by
It influences；The thick-walled pipe suitable for bigbore, while reducing steel pipe's production processing cost.
To achieve the above object, the present invention provides technical solution below：A kind of large deformation cold-drawing technology of seamless steel pipe,
Including the heat treatment procedure, pickling process and cold-drawn process being successively carried out continuously,
The heat treatment procedure is as follows：Pipe hot-puncturing process → hollow forging hot rolling cold bed conveys and → hollow forging hot charging heat of taking the lead online
It send；
The pickling process is as follows：Hollow forging pickling → hollow forging phosphatization → hollow forging drying → hollow forging lubrication；
The cold-drawn process uses compound external mold, and the compound external mold is substantially in horn-like, including die hole, the die hole include edge
Sizing reduction section, tube reducing wall-reducting section and the sizing section that axial internal diameter successively successively decreases, the internal diameter of the sizing reduction section along axial gradual change and
Inner wall bus is in arc line shaped, the internal diameter of the tube reducing wall-reducting section along axial gradual change and inner wall bus it is linear, the sizing
Section internal diameter along axial constant and inner wall bus it is linear, the radius of curvature of the sizing reduction section is（D/2）Tg β, tangent line cone
Angle is 8 ° -9 °, axial dimension 44mm-45mm, maximum inner diameter 3/2D, and the cone angle of the tube reducing wall-reducting section is 12 ° -13 °, axis
To having a size of 10mm-12mm, maximum inner diameter 63mm-65mm, the axial dimension of the sizing section is 40mm-50mm, radial ruler
It is very little be 50mm-52mm, the compound external mold with a thickness of 59.4mm-62mm, wherein D be drawn tube diameter, β be external mold bore
Angle.
Further, when hot-loading and hot-conveying, by the hollow forging rapid accumulation rewinding on hot rolling cold bed, then it is hoisted to track bottle vehicle
Asbestos quilt above and on hollow forging is covered, the roller bottom of track bottle vehicle is equipped with annealing furnace to eliminate the machining stress of hollow forging.
Further, when hollow forging pickling, pickling is carried out using hydrochloric acid, the concentration of pickling solution is 80g/t-160g/t, pickling
Time is 50min-55min, and the temperature of pickling solution is 50 ° -70 °.
Further, when hollow forging phosphatization, phosphatization is carried out using phosphating solution, the concentration of phosphating solution is 20pt-40pt, when phosphatization
Between be 20min-25min, the temperature of phosphating solution is 60 ° -80 °.
Further, it when hollow forging is dried, is dried using hot wind, hot blast temperature is 40 ° -45 °, drying time 20-
30 minutes.
Further, it when hollow forging lubricates, is lubricated using metal conditioner, lubrication time 15min-20min,
Lubricating temperature is 80 ° -90 °.
The present invention also provides another technical solutions：A kind of large deformation cold-drawn production line of seamless steel pipe, for as above
The large deformation cold-drawing technology, including the following equipment set gradually along product conveying direction：
Perforating apparatus, for carrying out hot-puncturing process to pipe；
It takes the lead online equipment comprising hot rolling cold bed and heading machine, for taking the lead to the hollow forging conveyed by hot rolling cold bed；
Hot-loading and hot-conveying equipment comprising track bottle vehicle, the track bottle vehicle are equipped with positioned at the annealing furnace at its roller bottom and capping in famine
Asbestos quilt on pipe, for annealing to the hollow forging conveyed by track bottle vehicle；
Pickler uses pickling tube, for carrying out pickling to hollow forging；
Phosphating equipment uses phosphatization cylinder, for carrying out phosphatization to hollow forging；
Drying equipment uses air blower, for drying to hollow forging；
Lubricating utensil uses grease cylinders, for being lubricated to hollow forging；
Cold-drawn equipment comprising internal model and external mold, the external mold use compound external mold, the compound external mold be substantially in it is horn-like,
Including die hole, the die hole includes the sizing reduction section, tube reducing wall-reducting section and sizing section successively to successively decrease along axial internal diameter, the tube reducing
The internal diameter of section is along axial gradual change and inner wall bus is in arc line shaped, and the internal diameter of the tube reducing wall-reducting section is along axial gradual change and inner wall
Bus is linear, the internal diameter of the sizing section along axial constant and inner wall bus it is linear, the curvature of the sizing reduction section
Radius is 58mm-60mm, and tangent line cone angle is 8 ° -9 °, axial dimension 440mm-450mm, maximum inner diameter 76mm-78mm, institute
The cone angle for stating tube reducing wall-reducting section is 12 ° -13 °, axial dimension 10mm-12mm, maximum inner diameter 63mm-65mm, the sizing
Section axial dimension be 40mm-50mm, radial dimension 50mm-52mm, the compound external mold with a thickness of 59.4mm-62mm.
Further, the size of the seamless steel pipe is DN51*6, and the radius of curvature of the sizing reduction section is 60mmmm, tangent line
Cone angle is 8 °, axial dimension 45mm, maximum inner diameter 76mm, and the cone angle of the tube reducing wall-reducting section is 13 °, and axial dimension is
12mm, maximum inner diameter 65mm, the axial dimension of the sizing section are 45mm, radial dimension 51mm.
Further, the surrounding of the phosphatization cylinder has been respectively coated by aluminum silicate insulation material layer.
Further, the surrounding of the grease cylinders has been respectively coated by aluminum silicate insulation material layer, also sets in the grease cylinders
There is centrifugal separator since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
（1）In heat treatment procedure in the present invention, conveyed after pipe hot-puncturing process by hot rolling cold bed, during transportation
It is taken the lead, is then put the speed of hot rolling cold bed to accumulation rewinding is most carried out fastly online, be then hoisted on track bottle vehicle simultaneously
Asbestos quilt is covered, hollow forging is made annealing treatment, rhythm of production is improved, the temperature of the hollow forging before annealing meets certain temperature
It is required that time inside furnace can reduce by 5 ~ 8min, it is ensured that the mechanical property after the annealing of hot rolling base material not only reduces disappearing for the energy
Consumption, is more advantageous to the smooth of large deformation cold-drawn, to create conditions for subsequent large deformation cold-drawn；
（2）In pickling process in the present invention, steel tube surface oxide skin is thoroughly cleaned using chlorohydric acid pickling, can avoid big become
Shape cold-drawn process of tube plug drawing mill occurs shaking and road plan, and makes the phosphating coat more fitting table for being plated on steel tube surface using drying after phosphatization
Face matrix not only increases production efficiency, more ensure that the smooth of large deformation cold-drawn to create better carrier for lubrication；
（3）In cold-drawn process in the present invention, using compound external mold, the sizing bandwidth of compound external mold, horn mouth is big, external mold thickness
It increased compared with the prior art, entrance cone angle increased compared with the prior art, be divided into three large deformation areas：Diameter reducing area, tube reducing subtract
Wall area and sizing area, can meet in thick-walled pipe rapid shaping, reduce production cost, be conducive to stream transportation by lighter management, single track
Secondary 20 ~ 25mm of sizing reduction, single pass wall thickness reducing amount is up to 1mm；By testing tracking data, finished product rate > 87%.
Detailed description of the invention
Fig. 1 is the block diagram of the large deformation cold-drawn production line of seamless steel pipe disclosed by the invention；
Fig. 2 is the structural schematic diagram of compound external mold disclosed by the invention.
Wherein, 10, perforating apparatus；20, it takes the lead online equipment；30, hot-loading and hot-conveying equipment；40, pickler；50, phosphatization
Equipment；60, drying equipment；70, lubricating utensil；80, cold-drawn equipment；81, internal model；82, external mold；821, sizing reduction section；822, tube reducing
Wall-reducting section；823, sizing section.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1 and Fig. 2, as shown in legend therein, a kind of large deformation cold-drawn production line of seamless steel pipe, including along production
The following equipment that product conveying direction is set gradually：
Perforating apparatus 10, for carrying out hot-puncturing process to pipe；
Online equipment 20 of taking the lead comprising hot rolling cold bed and heading machine, for beating the hollow forging conveyed by hot rolling cold bed
Head；
Hot-loading and hot-conveying equipment 30 comprising track bottle vehicle, the track bottle vehicle are equipped with positioned at the annealing furnace at its roller bottom and capping in famine
Asbestos quilt on pipe, for annealing to the hollow forging conveyed by track bottle vehicle；
Pickler 40, uses pickling tube, for carrying out pickling to hollow forging；
Phosphating equipment 50 uses phosphatization cylinder, for carrying out phosphatization to hollow forging；
Drying equipment 60, uses air blower, for drying to hollow forging；
Lubricating utensil 70, uses grease cylinders, for being lubricated to hollow forging；
Cold-drawn equipment 80 comprising internal model 81 and external mold 82, external mold 82 use compound external mold, are substantially in horn-like, including mould
Hole, die hole include the sizing reduction section 821, tube reducing wall-reducting section 822 and sizing section 823 successively to successively decrease along axial internal diameter, sizing reduction section 821
Internal diameter is along axial gradual change and inner wall bus is in arc line shaped, the internal diameter of tube reducing wall-reducting section 822 along axial gradual change and inner wall it is female
Line is linear, the internal diameter of sizing section 823 along axial constant and inner wall bus it is linear, the size of steel pipe is 51*6, is subtracted
The radius of curvature of diameter section 821 is 60mm, and tangent line cone angle is 8 °, axial dimension 44mm, maximum inner diameter 76mm, tube reducing wall-reducting section
822 cone angle is 13 °, axial dimension 11mm, maximum inner diameter 66mm, and the axial dimension of sizing section 823 is 45mm, radial ruler
It is very little be 51mm, external mold 82 with a thickness of 60mm.
Wherein, the surrounding of phosphatization cylinder and grease cylinders has been respectively coated by aluminum silicate insulation material layer, be additionally provided in grease cylinders from
Centrifugal separator removes the gred.
In a kind of embodiment, the size of steel pipe is（51x6）, the radius of curvature of sizing reduction section 821 is 60mm, tangent line cone angle
It is 8 °, axial dimension 44mm, maximum inner diameter 76mm, the cone angle of tube reducing wall-reducting section 822 is 13 °, axial dimension 11mm, most
Large diameter is 66mm, and the axial dimension of sizing section 823 is 45mm, radial dimension 51mm, external mold 82 with a thickness of 60mm.
In a kind of embodiment, the size of steel pipe is 51x6, and the radius of curvature of sizing reduction section 821 is 60mm, and tangent line cone angle is
8 °, axial dimension 44mm, maximum inner diameter 76mm, the cone angle of tube reducing wall-reducting section 822 is 13 °, axial dimension 11mm, maximum
Internal diameter is 66mm, and the axial dimension of sizing section 823 is 45mm, radial dimension 51mm, external mold 82 with a thickness of 60mm.
The following are a kind of large deformation cold-drawing technology of seamless steel pipe, including be successively carried out continuously heat treatment procedure, pickling
Process and cold-drawn process,
Heat treatment procedure is as follows：Hollow forging is conveyed and by beating to the pipe hot rolling cold bed that perforate → pass through by perforating apparatus 10
Head apparatus take the lead → it will be hoisted on track bottle vehicle and covers asbestos quilt after the hollow forging rapid accumulation rewinding on hot rolling cold bed,
It is annealed during conveying by roller bottom annealing furnace；
Pickling process is as follows：By pickler 40 to hollow forging carry out chlorohydric acid pickling → by phosphating equipment 50 to hollow forging carry out phosphorus
Change liquid phosphatization → dry to hollow forging by drying equipment 60 → and passes through lubricating utensil 70 to hollow forging progress surface treating agent profit
It is sliding.
The above are the descriptions to the embodiment of the present invention to keep this field special by the foregoing description of the disclosed embodiments
Industry technical staff can be realized or using the present invention.Various modifications to these embodiments carry out those skilled in the art
Saying will be apparent, and the general principles defined herein can be the case where not departing from the spirit or scope of the present invention
Under, it realizes in other embodiments.Therefore, the present invention will not be limited to the embodiments shown herein, but to accord with
Close the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. a kind of large deformation cold-drawing technology of seamless steel pipe, including be successively carried out continuously heat treatment procedure, pickling process and
Cold-drawn process, it is characterised in that：
The heat treatment procedure is as follows：Pipe hot-puncturing process → hollow forging hot rolling cold bed conveys and → hollow forging hot charging heat of taking the lead online
It send；
The pickling process is as follows：Hollow forging pickling → hollow forging phosphatization → hollow forging drying → hollow forging lubrication；
The cold-drawn process uses compound external mold, and the compound external mold is substantially in horn-like, including die hole, the die hole include edge
Sizing reduction section, tube reducing wall-reducting section and the sizing section that axial internal diameter successively successively decreases, the internal diameter of the sizing reduction section along axial gradual change and
Inner wall bus is in arc line shaped, the internal diameter of the tube reducing wall-reducting section along axial gradual change and inner wall bus it is linear, the sizing
Section internal diameter along axial constant and inner wall bus it is linear, the radius of curvature of the sizing reduction section is（D/2）Tg β, tangent line cone
Angle is 8 ° -9 °, axial dimension 44mm-45mm, maximum inner diameter 3/2D, and the cone angle of the tube reducing wall-reducting section is 12 ° -13 °, axis
To having a size of 10mm-12mm, maximum inner diameter 63mm-65mm, the axial dimension of the sizing section is 40mm-50mm, radial ruler
It is very little be 50mm-52mm, the compound external mold with a thickness of 59.4mm-62mm, wherein D be drawn tube diameter, β be external mold bore
Angle.
2. large deformation cold-drawing technology according to claim 1, which is characterized in that, will be on hot rolling cold bed when hot-loading and hot-conveying
Then hollow forging rapid accumulation rewinding is hoisted on track bottle vehicle and covers asbestos quilt on hollow forging, the roller bottom of track bottle vehicle is equipped with
Annealing furnace is to eliminate the machining stress of hollow forging.
3. large deformation cold-drawing technology according to claim 1, which is characterized in that when hollow forging pickling, carry out acid using hydrochloric acid
It washes, the concentration of pickling solution is 80g/t-160g/t, and pickling time 50min-55min, the temperature of pickling solution is 50 ° -70 °.
4. large deformation cold-drawing technology according to claim 1, which is characterized in that when hollow forging phosphatization, carried out using phosphating solution
Phosphatization, the concentration of phosphating solution are 20pt-40pt, and phosphating time 20min-25min, the temperature of phosphating solution is 60 ° -80 °.
5. large deformation cold-drawing technology according to claim 1, which is characterized in that when hollow forging is dried, dried using hot wind
Dry, hot blast temperature is 40 ° -45 °, and drying time is 20-30 minutes.
6. large deformation cold-drawing technology according to claim 1, which is characterized in that when hollow forging lubricates, at metal surface
Reason agent is lubricated, lubrication time 15min-20min, and lubrication temperature is 80 ° -90 °.
7. the large deformation cold-drawn production line of a kind of seamless steel pipe, for the large deformation cold-drawn work as described in claim 1-6 is any
Skill, which is characterized in that including the following equipment set gradually along product conveying direction：
Perforating apparatus, for carrying out hot-puncturing process to pipe；
It takes the lead online equipment comprising hot rolling cold bed and heading machine, for taking the lead to the hollow forging conveyed by hot rolling cold bed；
Hot-loading and hot-conveying equipment comprising track bottle vehicle, the track bottle vehicle are equipped with positioned at the annealing furnace at its roller bottom and capping in famine
Asbestos quilt on pipe, for annealing to the hollow forging conveyed by track bottle vehicle；
Pickler uses pickling tube, for carrying out pickling to hollow forging；
Phosphating equipment uses phosphatization cylinder, for carrying out phosphatization to hollow forging；
Drying equipment uses air blower, for drying to hollow forging；
Lubricating utensil uses grease cylinders, for being lubricated to hollow forging；
Cold-drawn equipment comprising internal model and external mold, the external mold use compound external mold, the compound external mold be substantially in it is horn-like,
Including die hole, the die hole includes the sizing reduction section, tube reducing wall-reducting section and sizing section successively to successively decrease along axial internal diameter, the tube reducing
The internal diameter of section is along axial gradual change and inner wall bus is in arc line shaped, and the internal diameter of the tube reducing wall-reducting section is along axial gradual change and inner wall
Bus is linear, the internal diameter of the sizing section along axial constant and inner wall bus it is linear, the curvature of the sizing reduction section
Radius is 58mm-60mm, and tangent line cone angle is 8 ° -9 °, axial dimension 440mm-450mm, maximum inner diameter 76mm-78mm, institute
The cone angle for stating tube reducing wall-reducting section is 12 ° -13 °, axial dimension 10mm-12mm, maximum inner diameter 63mm-65mm, the sizing
Section axial dimension be 40mm-50mm, radial dimension 50mm-52mm, the compound external mold with a thickness of 59.4mm-62mm.
8. the large deformation cold-drawn production line of seamless steel pipe according to claim 7, which is characterized in that the seamless steel pipe
Having a size of DN51*6, the radius of curvature of the sizing reduction section is 60mmmm, and tangent line cone angle is 8 °, axial dimension 45mm, most imperial palace
Diameter is 76mm, and the cone angle of the tube reducing wall-reducting section is 13 °, axial dimension 12mm, maximum inner diameter 65mm, the sizing section
Axial dimension is 45mm, radial dimension 51mm.
9. the large deformation cold-drawn production line of seamless steel pipe according to claim 7, which is characterized in that the four of the phosphatization cylinder
Week has been respectively coated by aluminum silicate insulation material layer.
10. the large deformation cold-drawn production line of seamless steel pipe according to claim 7, which is characterized in that the grease cylinders
Surrounding has been respectively coated by aluminum silicate insulation material layer, is additionally provided with centrifugal separator in the grease cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367928.7A CN108927420B (en) | 2017-05-23 | 2017-05-23 | Large-deformation cold-drawing process and production line of seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367928.7A CN108927420B (en) | 2017-05-23 | 2017-05-23 | Large-deformation cold-drawing process and production line of seamless steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108927420A true CN108927420A (en) | 2018-12-04 |
| CN108927420B CN108927420B (en) | 2020-10-30 |
Family
ID=64450942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367928.7A Active CN108927420B (en) | 2017-05-23 | 2017-05-23 | Large-deformation cold-drawing process and production line of seamless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108927420B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113172091A (en) * | 2021-04-30 | 2021-07-27 | 南京事达机械设备制造有限公司 | Corrosion-resistant rolling forming process and equipment for surface of automobile metal protective fence |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO114956B1 (en) * | 1997-12-23 | 1999-09-30 | Societatea Comerciala Diamond | Small-gauge wire drawing die |
| DE50303405D1 (en) * | 2002-12-21 | 2006-06-22 | Wieland Werke Ag | METHOD AND MANUFACTURING LINE FOR GENERALLY MANUFACTURING U-SHAPED HEAT EXCHANGE TUBES |
| CN102186609A (en) * | 2008-08-21 | 2011-09-14 | 昭和电工株式会社 | Device for drawing tubular workpiece |
| CN202766581U (en) * | 2012-06-11 | 2013-03-06 | 常州神龙管业有限公司 | Bright annealing device for stainless steel tube |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
| CN203886955U (en) * | 2014-03-14 | 2014-10-22 | 迟洪波 | Cold-drawing inner die and cold-drawing die of seamless steel pipe |
| CN104174688A (en) * | 2014-07-21 | 2014-12-03 | 苏州贝思特金属制品有限公司 | Production process of seamless stainless steel tube |
| CN204724632U (en) * | 2015-06-23 | 2015-10-28 | 江苏兴荣美乐铜业有限公司 | For the pipe lining device of the online annealing operation of copper pipe |
-
2017
- 2017-05-23 CN CN201710367928.7A patent/CN108927420B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO114956B1 (en) * | 1997-12-23 | 1999-09-30 | Societatea Comerciala Diamond | Small-gauge wire drawing die |
| DE50303405D1 (en) * | 2002-12-21 | 2006-06-22 | Wieland Werke Ag | METHOD AND MANUFACTURING LINE FOR GENERALLY MANUFACTURING U-SHAPED HEAT EXCHANGE TUBES |
| CN102186609A (en) * | 2008-08-21 | 2011-09-14 | 昭和电工株式会社 | Device for drawing tubular workpiece |
| CN202766581U (en) * | 2012-06-11 | 2013-03-06 | 常州神龙管业有限公司 | Bright annealing device for stainless steel tube |
| CN203751013U (en) * | 2014-03-14 | 2014-08-06 | 迟洪波 | Cold-drawing outer mold and cold-drawing mold for seamless steel tube |
| CN203886955U (en) * | 2014-03-14 | 2014-10-22 | 迟洪波 | Cold-drawing inner die and cold-drawing die of seamless steel pipe |
| CN104174688A (en) * | 2014-07-21 | 2014-12-03 | 苏州贝思特金属制品有限公司 | Production process of seamless stainless steel tube |
| CN204724632U (en) * | 2015-06-23 | 2015-10-28 | 江苏兴荣美乐铜业有限公司 | For the pipe lining device of the online annealing operation of copper pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113172091A (en) * | 2021-04-30 | 2021-07-27 | 南京事达机械设备制造有限公司 | Corrosion-resistant rolling forming process and equipment for surface of automobile metal protective fence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108927420B (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107931331B (en) | A kind of production method of two roller cold rolling seamless steel of high-precision | |
| CN102699102B (en) | Production process method of small-caliber cold-drawing seamless steel tube used for boiler | |
| CN102294379B (en) | Method for manufacturing seamless steel pipe for high-pressure gas cylinder with large caliber | |
| RU2523398C1 (en) | PRODUCTION OF SEAMLESS COLD-FORMED OIL-WELL TUBING SIZED TO 114,3×6, 8×9000-10700 mm FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ-Ш" GRADE | |
| CN101551040A (en) | Large-caliber stainless steel seamless pipe and processing method thereof | |
| CN212598017U (en) | Production line of large-diameter high-performance stainless steel seamless pipe | |
| CN105834234A (en) | Two-pass continuous drawing method for producing cold-drawn steel pipe | |
| CN110899335A (en) | Short-process manufacturing method of small-caliber marine titanium alloy seamless pipe | |
| CN112024638A (en) | Production line and production process of large-diameter high-performance stainless steel seamless pipe | |
| CN106216965B (en) | A kind of casting and rolling composite forming method of corronium retainer | |
| CN113862556B (en) | 4140 medium-thick-wall seamless steel pipe and production method thereof | |
| CN108927420A (en) | A kind of the large deformation cold-drawing technology and production line of seamless steel pipe | |
| CN102247988B (en) | Method for producing gas cylinder pipe with diameter of phi610 to 720 for natural gas underground storage well | |
| CN102861784B (en) | Mid-carbon, nickel, chromium, molybdenum and vanadium alloy steel seamless tube and production method therefore | |
| CN111299481B (en) | Closed forging and pressing forming process for gear shaft of new energy automobile engine | |
| CN105750332B (en) | A kind of eight segmentation tube rolling roll shapes and preparation method thereof | |
| CN102728652A (en) | Manufacturing method of dual-metal seamless steel pipe with outer-layer low-carbon steel and inner-layer bearing steel | |
| CN111043408A (en) | Novel stainless steel seamless steel pipe | |
| CN205732285U (en) | A kind of eight segmentation tube rolling roll shapes | |
| CN202176830U (en) | Thermometal composite tube | |
| Tkachov et al. | Development and application of tube end forming process with combined swaging and local differential pre-heating | |
| CN109500131B (en) | Manufacturing method of seamless steel tube for gas cylinder of long tube trailer | |
| CN104759832A (en) | Manufacturing method of hot-rolled high-collapse-resistance petroleum pipe | |
| CN104551540A (en) | Production method of cold-drawn precise cylinder tube | |
| CN113441675A (en) | High-precision hydraulic cylinder barrel for radial cold forging and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |