CN109604342A - A kind of processing method of seamless steel pipe - Google Patents
A kind of processing method of seamless steel pipe Download PDFInfo
- Publication number
- CN109604342A CN109604342A CN201811351970.0A CN201811351970A CN109604342A CN 109604342 A CN109604342 A CN 109604342A CN 201811351970 A CN201811351970 A CN 201811351970A CN 109604342 A CN109604342 A CN 109604342A
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- CN
- China
- Prior art keywords
- steel pipe
- temperature
- degrees celsius
- pickling
- minutes
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 36
- 238000005554 pickling Methods 0.000 claims abstract description 31
- 238000007127 saponification reaction Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 229910000754 Wrought iron Inorganic materials 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 239000011780 sodium chloride Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000010792 warming Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 150000002191 fatty alcohols Chemical class 0.000 claims description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 238000004321 preservation Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0242—Lubricants
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/081—Iron or steel solutions containing H2SO4
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of processing methods of seamless steel pipe, the steps include: that round steel pipe is put into heating furnace by A., are warming up to 1200 ± 30 degrees Celsius, keep the temperature 40-50 minutes；B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；D. perforation is carried out to steel pipe to handle to obtain round tube；E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；F. cold drawn forming；G. low-temperature annealing: the steel pipe after cold-drawn being put into annealing furnace and is heated to 500 ± 30 degrees Celsius, keeps the temperature 40-50 minute, is then cooled down in furnace；H. straightening processing.
Description
Technical field
The present invention relates to a kind of processing methods of seamless steel pipe.
Background technique
Existing seamless steel tube production technique are as follows: first on round steel end then perforating is heated so as to positioning of perforating
Processing, then perforates the rod iron after heating to obtain steel pipe base.
The shortcomings that this processing method, is:
Due to the inhomogeneities and surface scale uneven thickness expanded with heat and contract with cold after pole heating, so that positioning eye generates partially
It moves, causes the wall unevenness of subsequent perforation；It further results in and needs multiple cold-drawn in Cold Drawing Process just and can be reduced this wall thickness
Uneven phenomenon；And heat treatment shaping is required after cold-drawn each time, heat treatment process causes steel tube surface decarburization defect, at heat
Reason number is more, and composition transfer is bigger, to influence material property.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of processing method of seamless steel pipe.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: a kind of processing method of seamless steel pipe,
Step are as follows:
A. round steel pipe is put into heating furnace, is warming up to 1200 ± 30 degrees Celsius, keep the temperature 40-50 minutes；
B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；
C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；
D. perforation is carried out to steel pipe to handle to obtain round tube；
E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；
F. cold drawn forming；
G. low-temperature annealing: the steel pipe after cold-drawn is put into annealing furnace and is heated to 500 ± 30 degrees Celsius, 40-50 points of heat preservation
Clock, it is then cooling in furnace；
H. straightening processing.
As a preferred solution, pickling processes process includes: to take 2 parts of 95-98% concentrated sulfuric acid in the pretreatment,
6-8 parts of clear water add 0.1 part of fatty alcohol polyoxyethylene ether to be configured to pickling solution, and pickling solution temperature is controlled at 50-60 degrees Celsius；
Steel pipe is put into carry out pickling, pickling time 10-30 minutes；Then steel pipe is rinsed.
As a preferred solution, parkerizing process includes: that blank is immersed in phosphating solution in the pretreatment, phosphatization
60-80 degrees Celsius of temperature, phosphating time is 25-30 minutes, slings and repeats once after blank surface is dry.
As a preferred solution, saponification process includes: that the blank after phosphatization is immersed in saponification in the pretreatment
In liquid, 50-60 degrees Celsius of saponification temperature, saponification time is 20-30 minutes.
The beneficial effects of the present invention are: then carrying out end positioning due to removing surface scale to the rod iron after heating
Perforating；Sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；Perforation is carried out to steel pipe to handle to obtain round tube；
So that the thickness of steel pipe after perforation is uniform, dimensional accuracy is high, can greatly reduce cold-drawn and heat treatment number, to substantially reduce
Production cost, maintains the stability of pipe material performance.
Due to uniformly dispensing sodium chloride crystal or soluble oil to steel tube surface before perforating, with the protection circle in perforation
Steel surface.
Phosphatization makes steel tube surface form comparatively dense subtle desmachyme twice, can adsorb more saponification liquors, change
Lubricating condition has been apt to it, coefficient of friction when draw just greatly reduces, and improves the service life of mold.
Specific embodiment
Specific embodiments of the present invention are described below in detail.
A kind of embodiment 1, processing method of seamless steel pipe, the steps include:
A. round steel pipe is put into heating furnace, is warming up to 1200 degrees Celsius with 100 degrees Celsius of speed hourly, heat preservation
50 minutes；
B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；
C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；
D. perforation is carried out to steel pipe to handle to obtain round tube；
E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；
Pickling processes process includes: to take 2 parts of 95% concentrated sulfuric acid, 6 parts of clear water, adds 0.1 part of fatty alcohol polyoxyethylene ether preparation
At pickling solution, pickling solution temperature is controlled at 50 degrees Celsius；Steel pipe is put into carry out pickling, pickling time 30 minutes；Then will
Steel pipe rinses.
Parkerizing process includes: that blank is immersed in phosphating solution, and 60 degrees Celsius of phosphatization temperature, phosphating time is 30 minutes,
It slings and is repeated once after blank surface is dry.
Saponification process includes: that the blank after phosphatization is immersed in saponification liquor, and 50 degrees Celsius of saponification temperature, saponification time is
30 minutes.
F. cold drawn forming；
G. low-temperature annealing: the steel pipe after cold-drawn being put into roller bottom type annealing furnace and is heated to 500 degrees Celsius, keeps the temperature 40 points
Clock, it is then cooling in furnace；
H. straightening processing.
A kind of embodiment 2, processing method of seamless steel pipe, the steps include:
A. round steel pipe is put into heating furnace, is warming up to 1230 degrees Celsius with 100 degrees Celsius of speed hourly, heat preservation
40 minutes；
B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；
C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；
D. perforation is carried out to steel pipe to handle to obtain round tube；
E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；
Pickling processes process includes: to take 2 parts of 98% concentrated sulfuric acid, 8 parts of clear water, adds 0.1 part of fatty alcohol polyoxyethylene ether preparation
At pickling solution, pickling solution temperature is controlled at 50 degrees Celsius；Steel pipe is put into carry out pickling, pickling time 20 minutes；Then will
Steel pipe rinses.
Parkerizing process includes: that blank is immersed in phosphating solution, and 80 degrees Celsius of phosphatization temperature, phosphating time is 25 minutes,
It slings and is repeated once after blank surface is dry.
Saponification process includes: that the blank after phosphatization is immersed in saponification liquor, and 60 degrees Celsius of saponification temperature, saponification time is
20 minutes.
F. cold drawn forming；
G. low-temperature annealing: the steel pipe after cold-drawn being put into annealing furnace and is heated to 530 degrees Celsius, keeps the temperature 40 minutes, then
It is cooling in furnace；
H. straightening processing.
A kind of embodiment 3, processing method of seamless steel pipe, the steps include:
A. round steel pipe is put into heating furnace, is warming up to 1170 degrees Celsius with 100 degrees Celsius of speed hourly, heat preservation
45 minutes；
B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；
C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；
D. perforation is carried out to steel pipe to handle to obtain round tube；
E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；
Pickling processes process includes: to take 2 parts of 97% concentrated sulfuric acid, 7 parts of clear water, adds 0.1 part of fatty alcohol polyoxyethylene ether preparation
At pickling solution, pickling solution temperature is controlled at 56 degrees Celsius；Steel pipe is put into carry out pickling, pickling time 26 minutes；Then will
Steel pipe rinses.
Parkerizing process includes: that blank is immersed in phosphating solution, and 70 degrees Celsius of phosphatization temperature, phosphating time is 25 minutes,
It slings and is repeated once after blank surface is dry.
Saponification process includes: that the blank after phosphatization is immersed in saponification liquor, and 55 degrees Celsius of saponification temperature, saponification time is
25 minutes.
F. cold drawn forming；
G. low-temperature annealing: the steel pipe after cold-drawn being put into annealing furnace and is heated to 500 degrees Celsius, keeps the temperature 45 minutes, then
It is cooling in furnace；
H. straightening processing.
The principles and effects of the invention, and the implementation that part uses only is illustrated in the above embodiments
Example, and is not intended to limit the present invention；It should be pointed out that for those of ordinary skill in the art, not departing from wound of the present invention
Under the premise of making design, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (4)
1. a kind of processing method of seamless steel pipe, the steps include:
A. round steel pipe is put into heating furnace, is warming up to 1200 ± 30 degrees Celsius, keep the temperature 40-50 minutes；
B. surface scale is removed to the rod iron after heating, then carries out end and positions perforating；
C. sodium chloride crystal or soluble oil are uniformly dispensed to steel tube surface；
D. perforation is carried out to steel pipe to handle to obtain round tube；
E. it pre-processes: steel pipe is subjected to pickling, phosphatization, saponification process；
F. cold drawn forming；
G. low-temperature annealing: the steel pipe after cold-drawn being put into annealing furnace and is heated to 500 ± 30 degrees Celsius, keeps the temperature 40-50 minutes, so
It is cooling in furnace afterwards；
H. straightening processing.
2. a kind of processing method of seamless steel pipe as described in claim 1, it is characterised in that: pickling processes in the pretreatment
Process includes: to take 2 parts of 95-98% concentrated sulfuric acid, and 6-8 parts of clear water add 0.1 part of fatty alcohol polyoxyethylene ether to be configured to pickling solution, will
Pickling solution temperature is controlled at 50-60 degrees Celsius；Steel pipe is put into carry out pickling, pickling time 10-30 minutes；Then steel pipe is used
Water rinses.
3. a kind of processing method of seamless steel pipe as described in claim 1, it is characterised in that: parkerizing process in the pretreatment
It include: that blank is immersed in phosphating solution, 60-80 degrees Celsius of phosphatization temperature, phosphating time is 25-30 minutes, is sling to blank
It is repeated after surface is dry primary.
4. a kind of processing method of seamless steel pipe as claimed in any one of claims 1-3, it is characterised in that: the pretreatment
Middle saponification process includes: that the blank after phosphatization is immersed in saponification liquor, and 50-60 degrees Celsius of saponification temperature, saponification time 20-
30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811351970.0A CN109604342A (en) | 2018-11-14 | 2018-11-14 | A kind of processing method of seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811351970.0A CN109604342A (en) | 2018-11-14 | 2018-11-14 | A kind of processing method of seamless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109604342A true CN109604342A (en) | 2019-04-12 |
Family
ID=66003067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811351970.0A Pending CN109604342A (en) | 2018-11-14 | 2018-11-14 | A kind of processing method of seamless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109604342A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113245369A (en) * | 2021-05-19 | 2021-08-13 | 张家港保税区恒隆钢管有限公司 | Manufacturing process of pipe for PMMA reactor |
| CN113444864A (en) * | 2020-03-24 | 2021-09-28 | 宝山钢铁股份有限公司 | Control process for surface decarburization of automobile hollow transmission shaft tube and hollow transmission shaft tube thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048405A (en) * | 1990-08-16 | 1991-01-09 | 本溪市玻璃研究所 | Glassy lubricant used for hot perforating of stainless steel |
| CN101910388A (en) * | 2008-01-11 | 2010-12-08 | 住友金属工业株式会社 | Lubricant for hot working and process for manufacturing seamless steel pipe |
| CN102189379A (en) * | 2011-04-13 | 2011-09-21 | 张家港保税区恒隆钢管有限公司 | Cold drawing method and die for special-shaped pipes |
| CN102294379A (en) * | 2011-06-28 | 2011-12-28 | 攀钢集团成都钢钒有限公司 | Method for manufacturing seamless steel pipe for high-pressure gas cylinder with large caliber |
| CN104046924A (en) * | 2014-06-25 | 2014-09-17 | 宝山钢铁股份有限公司 | High-toughness seamless steel pipe for automobile safety airbag and manufacturing method thereof |
| CN104307876A (en) * | 2014-10-20 | 2015-01-28 | 张家港市人和高精管有限公司 | Production process of precise seamless steel tube for hydraulic cylinder |
| CN104492850A (en) * | 2014-12-02 | 2015-04-08 | 安徽天大石油管材股份有限公司 | Production method of high-finish steel tube |
| CN104862591A (en) * | 2015-05-26 | 2015-08-26 | 宝山钢铁股份有限公司 | Steel for high-strength high-pressure oil pipe, high-pressure oil pipe and manufacturing method of high-pressure oil pipe |
| CN105855321A (en) * | 2016-05-19 | 2016-08-17 | 常熟市异型钢管有限公司 | Preparation method of multi-head internal thread seamless steel tube for high pressure boiler |
| CN107520271A (en) * | 2017-08-03 | 2017-12-29 | 常熟市异型钢管有限公司 | The production technology of the special-shaped steel high pressure seamless pipe of waste heat boiler |
-
2018
- 2018-11-14 CN CN201811351970.0A patent/CN109604342A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048405A (en) * | 1990-08-16 | 1991-01-09 | 本溪市玻璃研究所 | Glassy lubricant used for hot perforating of stainless steel |
| CN101910388A (en) * | 2008-01-11 | 2010-12-08 | 住友金属工业株式会社 | Lubricant for hot working and process for manufacturing seamless steel pipe |
| CN102189379A (en) * | 2011-04-13 | 2011-09-21 | 张家港保税区恒隆钢管有限公司 | Cold drawing method and die for special-shaped pipes |
| CN102294379A (en) * | 2011-06-28 | 2011-12-28 | 攀钢集团成都钢钒有限公司 | Method for manufacturing seamless steel pipe for high-pressure gas cylinder with large caliber |
| CN104046924A (en) * | 2014-06-25 | 2014-09-17 | 宝山钢铁股份有限公司 | High-toughness seamless steel pipe for automobile safety airbag and manufacturing method thereof |
| CN104307876A (en) * | 2014-10-20 | 2015-01-28 | 张家港市人和高精管有限公司 | Production process of precise seamless steel tube for hydraulic cylinder |
| CN104492850A (en) * | 2014-12-02 | 2015-04-08 | 安徽天大石油管材股份有限公司 | Production method of high-finish steel tube |
| CN104862591A (en) * | 2015-05-26 | 2015-08-26 | 宝山钢铁股份有限公司 | Steel for high-strength high-pressure oil pipe, high-pressure oil pipe and manufacturing method of high-pressure oil pipe |
| CN105855321A (en) * | 2016-05-19 | 2016-08-17 | 常熟市异型钢管有限公司 | Preparation method of multi-head internal thread seamless steel tube for high pressure boiler |
| CN107520271A (en) * | 2017-08-03 | 2017-12-29 | 常熟市异型钢管有限公司 | The production technology of the special-shaped steel high pressure seamless pipe of waste heat boiler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113444864A (en) * | 2020-03-24 | 2021-09-28 | 宝山钢铁股份有限公司 | Control process for surface decarburization of automobile hollow transmission shaft tube and hollow transmission shaft tube thereof |
| CN113245369A (en) * | 2021-05-19 | 2021-08-13 | 张家港保税区恒隆钢管有限公司 | Manufacturing process of pipe for PMMA reactor |
| CN113245369B (en) * | 2021-05-19 | 2022-08-09 | 张家港保税区亚鑫精密制管有限公司 | Manufacturing process of pipe for PMMA reactor |
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Application publication date: 20190412 |