CN109663831A - A method of producing small-bore Steel Pipe For Bearing - Google Patents
A method of producing small-bore Steel Pipe For Bearing Download PDFInfo
- Publication number
- CN109663831A CN109663831A CN201811319747.8A CN201811319747A CN109663831A CN 109663831 A CN109663831 A CN 109663831A CN 201811319747 A CN201811319747 A CN 201811319747A CN 109663831 A CN109663831 A CN 109663831A
- Authority
- CN
- China
- Prior art keywords
- base pipe
- pipe
- base
- steel pipe
- bearing
- 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
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
Abstract
The embodiment of the invention discloses a kind of methods for producing small-bore Steel Pipe For Bearing, successively the following steps are included: perforating to form the first base pipe to filled circles heating of pipe blank；Antioxidant and anti-oxidant gas are sprayed in the inner surface of the first base pipe, forms the second base pipe；The plug that surface is coated with lubricant is inserted into the second base pipe and rolls to form third base pipe by three-high mill multi-frame；After the completion of rolling, plug and third base pipe are separated, carry out tube reducing or sizing in reducing mill or sizing mill by the third base pipe for meeting the first preset temperature and subtract wall to form the 4th base pipe, and the whole temperature of pricking for controlling the 4th base pipe is the second preset temperature；4th base pipe is cooled to third preset temperature, post-processing is carried out to the 4th base pipe after cooling, forms small-bore Steel Pipe For Bearing.The present invention effectively increases small-bore Steel Pipe For Bearing production efficiency, reduces production cost, and expanding production specification is also beneficial to reduce energy consumption and carbon emission, is conducive to environmental protection.
Description
Technical field
The present embodiments relate to control device processing technique fields, more particularly, to a kind of small-bore Steel Pipe For Bearing of production
Method.
Background technique
Currently, known outer diameter mainly has less than the small-bore GCr15 Steel Pipe For Bearing production technology of 114mm: using forging or
Then the filled circles pipe of rolling is heated to 1060 DEG C to 1180 DEG C, through Mannesmann piercing in intermediate frequency or gas-fired heater
Filled circles pipe is set to be processed into hollow hot-rolled pipe, and controlling hot-rolled pipe finishing temperature is 950 DEG C to 1000 DEG C, after rolling on cold bed
It is air-cooled, then, soft annealing, multi-pass pickling, cold rolling or cold-drawn, final finished spheroidizing etc. are carried out into heat-treatment furnace.
Alternatively, by above-mentioned production technology, after Mannesmann piercing makes filled circles pipe be processed into hollow hot-rolled pipe, then
Increase by one of hot rolling multi-frame sizing or tube reducing process, finishing temperature is at 950 DEG C or so, remaining production technology and above-mentioned production work
Skill is essentially identical.
In above-mentioned two production technology, either with hollow ingot supply cold working cold rolling after perforation or cold-drawn production
GCr15 Steel Pipe For Bearing, or with perforate after+multi-frame sizing or tube reducing process production steel pipe, supply cold working cold rolling or cold
It pulls out production GCr15 Steel Pipe For Bearing and obtains coarse pearlity and net carbide tissue in steel pipe institutional framework, it is this
It organizes totally unfavorable for the spherodized structure and performance of finished product fine microstructures required by Steel Pipe For Bearing.In order to eliminate above-mentioned group
It knits, is not able to increase the time of subsequent spheroidizing, increases energy consumption and production cost, reduce production efficiency.
Since nearly 10 years, and there is the filled circles pipe using forging or rolling, then, in intermediate frequency or gas-fired heater
Be heated to 1060 DEG C makes filled circles pipe be processed into hollow hot-rolled pipe to 1180 DEG C through Mannesmann piercing, and controls hot-rolled pipe end
950 DEG C to 1000 DEG C of temperature are rolled, then, steel pipe is as cold as 550 DEG C to 650 DEG C by controlled cooling device fastly, is air-cooled to room temperature, then through heat
It takes the lead, softening heat treatment, pickling, it is small to produce outer diameter required for user for multi-pass cold rolling or cold-drawn and nodularization heat treatment
In the small-bore Steel Pipe For Bearing of 114mm.Although this production technology has obtained certain improvement to hollow ingot tissue after perforation, also
Be that there are the following problems: the hot-rolled pipe outer diameter of Mannesmann piercing can only carry out on the basis of circular pipe blank diameter dimension
Isometrical or about 10% expanding deformation, cannot reduce outer diameter of steel pipes, production specification number is limited；Steel pipe after hot piercing, it is cold rolling, cold
It is more to pull out passage, the production cycle is long, and production efficiency is low, at high cost；Multi-pass cold rolling, cold-drawn need repeated multiple times softening heat treatment
And pickling, energy consumption is high, and carbon emission increases, and pollutes environment.
Summary of the invention
For the defects in the prior art, the embodiment of the present invention provides a kind of life at least solving above-mentioned partial technical problems
The method for producing small-bore Steel Pipe For Bearing.
Against the above technical problems, the embodiment provides a kind of method for producing small-bore Steel Pipe For Bearing, according to
It is secondary the following steps are included:
It perforates to form the first base pipe to filled circles heating of pipe blank；
Antioxidant and anti-oxidant gas are sprayed in the inner surface of the first base pipe, forms the second base pipe；
The plug that surface is coated with lubricant is inserted into the second base pipe and is rolled by three-high mill multi-frame, third is formed
Base pipe；
After the completion of rolling, plug and third base pipe are separated, the third base pipe of the first preset temperature will be met in reducing mill
Or sizing mill carries out tube reducing or sizing and subtracts wall forming the 4th base pipe, and the whole temperature of pricking for controlling the 4th base pipe is second default
Temperature；
4th base pipe is cooled to third preset temperature, post-processing is carried out to the 4th base pipe after cooling, forms osculum
Diameter Steel Pipe For Bearing.
Preferably, the lubricant of mandrel surface spraying is that content is no less than 30g/m2Graphite is water base or oil lubricant.
Preferably, first preset temperature is 920 DEG C -1000 DEG C.
Preferably, second preset temperature is 820 DEG C -930 DEG C.
Preferably, the 4th base pipe is cooled to third preset temperature, comprising:
By the 4th base pipe with the cooling velocity greater than 6 DEG C/s by quickly cooling device, when being cooled to 600-700 DEG C into
It is air-cooled to enter cold bed progress, is air-cooled to room temperature again when being cooled to 550 DEG C -650 DEG C.
Preferably, using water or water and air as cooling medium, three sets or more with cyclic annular or cyclic annular with oval spray
The water ring of mouth keeps hydraulic pressure to be greater than 0.1MPa and is cooled down in quickly cooling device.
Preferably, the antioxidant is borax, and the anti-oxidant gas is nitrogen.
Preferably, antioxidant and anti-oxidant gas are sprayed in the inner surface of the first base pipe, comprising:
It is not less than 0.2MPa according to the pressure of anti-oxidant gas, antioxidant is not small in the quantity for spray of the first base pipe internal surface
In 40g/m2, the time sprayed greater than the condition of 4s in the inner surface of the first base pipe.
Preferably, to filled circles heating of pipe blank, comprising:
1100-1180 DEG C is heated to filled circles pipe.
The embodiment of the invention provides a kind of method for producing small-bore Steel Pipe For Bearing, due to formed in heating perforation the
The inner surface spraying antioxidant of one base pipe and anti-oxidant gas, form the second base pipe；, and surface is coated with to the core of lubricant
Stick is inserted into the second base pipe and rolls by three-high mill multi-frame, formation third base pipe, and after the completion of rolling, by plug and the
The third base pipe for meeting the first preset temperature is carried out tube reducing or sizing in reducing mill or sizing mill and subtracts wall by the separation of three base pipes
The 4th base pipe is formed, and the whole temperature of pricking for controlling the 4th base pipe is the second preset temperature, and the 4th base pipe is cooled to third
Preset temperature carries out post-processing to the 4th base pipe after cooling, forms small-bore Steel Pipe For Bearing, therefore, alternative cold working
Cold rolling or cold-drawn produce the steel pipe produced after Steel Pipe For Bearing, and perforation with multi-frame sizing or tube reducing process, supply cold working
Cold rolling or cold-drawn produce Steel Pipe For Bearing production method, and also alternative Mannesmann piercing tube rolling, effectively increases small-bore bearing
Steel pipe's production efficiency reduces production cost, and expanding production specification is also beneficial to reduce energy consumption and carbon emission, is conducive to environment guarantor
Shield.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of the method for the small-bore Steel Pipe For Bearing of production that the embodiment of the present invention 1 provides；
Fig. 2 is kind of a process flow chart for the method for producing GCr15 Steel Pipe For Bearing of the outer diameter less than 114mm；
Fig. 3 a and Fig. 3 b are respectively the spherodized structure figure of prior art and the spherodized structure figure of present invention process.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work belongs to the model of protection of the embodiment of the present invention
It encloses.
Fig. 1 is the flow diagram of the method for the small-bore Steel Pipe For Bearing of production that the embodiment of the present invention 1 provides.
A kind of method producing small-bore Steel Pipe For Bearing as shown in Figure 1, successively the following steps are included:
S101, it perforates to form the first base pipe to filled circles heating of pipe blank；
S102, antioxidant and anti-oxidant gas are sprayed in the inner surface of the first base pipe, forms the second base pipe；
S103, the plug that surface is coated with to lubricant are inserted into the second base pipe to be rolled by three-high mill multi-frame, shape
At third base pipe；
After the completion of S104, rolling, plug and third base pipe are separated, the third base pipe for meeting the first preset temperature is being subtracted
Diameter machine or sizing mill carry out tube reducing or sizing and subtract wall the 4th base pipe of formation, and the whole temperature of pricking for controlling the 4th base pipe is second
Preset temperature；
It is understood that in this step carry out tube reducing or sizing in reducing mill or sizing mill and subtract wall form the 4th
Base pipe is to carry out tube reducing or sizing, while also carrying out subtracting wall.
S105, the 4th base pipe is cooled to third preset temperature, post-processing is carried out to the 4th base pipe after cooling, is formed
Small-bore Steel Pipe For Bearing.
The method of the small-bore Steel Pipe For Bearing of production described in the embodiment of the present invention, due to the first base formed in heating perforation
The inner surface spraying antioxidant of pipe and anti-oxidant gas, form the second base pipe；, and the plug that surface is coated with lubricant is inserted
Enter and rolled in the second base pipe by three-high mill multi-frame, third base pipe is formed, and after the completion of rolling, by plug and third base
The third base pipe for meeting the first preset temperature is carried out tube reducing or sizing and subtracts wall to be formed by pipe separation in reducing mill or sizing mill
4th base pipe, and the whole temperature of pricking for controlling the 4th base pipe is the second preset temperature, and the 4th base pipe is cooled to third and is preset
Temperature carries out post-processing to the 4th base pipe after cooling, forms small-bore Steel Pipe For Bearing, therefore, alternative cold working cold rolling
Or cold-drawn produces the steel pipe produced after Steel Pipe For Bearing, and perforation with multi-frame sizing or tube reducing process, supply cold working cold rolling
Or cold-drawn produces Steel Pipe For Bearing production method, also alternative Mannesmann piercing tube rolling, effectively increases small-bore Steel Pipe For Bearing
Production efficiency, reduces production cost, and expanding production specification is also beneficial to reduce energy consumption and carbon emission, is conducive to environmental protection.
In a specific embodiment, mandrel surface spraying lubricant be content be no less than 30g/m2 graphite it is water base or
Oil lubricant.
In a specific embodiment, first preset temperature is 920 DEG C -1000 DEG C.
In a specific embodiment, second preset temperature is 820 DEG C -930 DEG C.
As a kind of preferred embodiment, the 4th base pipe is cooled to third preset temperature in the step S105, comprising:
By the 4th base pipe with the cooling velocity greater than 6 DEG C/s by quickly cooling device, when being cooled to 600-700 DEG C into
It is air-cooled to enter cold bed progress, is air-cooled to room temperature again when being cooled to 550 DEG C -650 DEG C.
In a specific embodiment, using water or water and air as cooling medium, three sets or more with cyclic annular or ring
Shape has the water ring of oval nozzle, keeps hydraulic pressure to be greater than 0.1MPa and is cooled down in quickly cooling device.
In a specific embodiment, the antioxidant is borax, and the anti-oxidant gas is nitrogen.
As a kind of preferred embodiment, the inner surface in the first base pipe in the step S102 sprays antioxidant
With anti-oxidant gas, comprising:
It is not less than 0.2MPa according to the pressure of anti-oxidant gas, antioxidant is not small in the quantity for spray of the first base pipe internal surface
In 40g/m2, the time sprayed greater than the condition of 4s in the inner surface of the first base pipe.
As a kind of preferred embodiment, in the step S101 to filled circles heating of pipe blank, comprising:
1100-1180 DEG C is heated to filled circles pipe.
It is worth illustrating to be, the small-bore Steel Pipe For Bearing in the present invention is the Steel Pipe For Bearing that outer diameter is less than 114mm.
Below by a specific embodiment, the present invention will be described.
Fig. 2 is a kind of process flow chart of method for producing GCr15 Steel Pipe For Bearing of the outer diameter less than 114mm.
A kind of method producing GCr15 Steel Pipe For Bearing of the outer diameter less than 114mm as shown in Figure 2, successively includes following step
Rapid: 201, pipe prepares；202, heating of pipe blank；203, pipe is perforated；204, dephosphorization in hollow ingot；205, mandrel lubrication；206,
Three roller Multi-stand continuous rolling mill tandem rollings form Continuous Seamless Tube Mill (rolling of three-high mill multi-frame)；207, by Continuous Seamless Tube Mill and core in rod stripping machine
Stick is separated；208, Continuous Seamless Tube Mill temperature makes Continuous Seamless Tube Mill be heated to 920 DEG C or more lower than 920 DEG C into reheating furnace；209, three roller
Multi-frame stretch-reducing mill (or sizing mill) carries out tube reducing or sizing to Continuous Seamless Tube Mill and subtracts wall, controls finishing temperature；210, steel
Pipe fast cooling device cools down steel pipe；211, step cooling bed is air-cooled；212, steel pipe thickened end end to end is cut off；213, non-oxidation ball
Annealing；214, steel-tube finishing, surfaces externally and internally and dimension control, be packed and stored.(wherein 212-214 can be regarded as above-mentioned implementation
Post-processing steps in example)
Previous step is described in detail below.
A method of producing small-bore Steel Pipe For Bearing, successively the following steps are included:
1) pipe for meeting standard of preparation is sent into heating furnace, is heated to 1100-1180 DEG C；
2) pipe heated is rolled, to control table in hollow ingot with the critical compresibility less than 6% on conic perforator
Quality；
3) with 0.2MPa pressure nitrogen gas is not less than, the amount of injection is not less than 40g/m2Antioxidant, such as borax, duration are big
In 4s, hollow ingot steel pipe internal-surface is sprayed, to reduce GCr15 Steel Pipe For Bearing inner wall oxide and improve surface quality；
4) with no less than 30g/m2Graphite is water base or oil lubricant dry powder, mandrel surface is sprayed on, to reduce GCr15 axis
It holds steel pipe inner wall decarburization and improves surface quality；
5) plug that insertion in 1100 DEG C of hollow ingots (hollow ingot steel pipe) has been applied to lubricant, is sent to three roller multi-frames company
Milling train (rolling of three-high mill multi-frame) carries out subtracting wall and tube reducing；
6) in rod stripping machine, plug is separated with Continuous Seamless Tube Mill (even pricking formation by above-mentioned)；
7) it for having 920-1000 DEG C of Continuous Seamless Tube Mill, is directly entered stretch-reducing mill and carries out tube reducing and subtract wall；
8) it for the Continuous Seamless Tube Mill on a small quantity less than 920 DEG C, is sent into reheating furnace and is heated, enter back into stretch-reducing mill or fixed
Diameter machine carries out tube reducing or sizing and subtracts wall；
9) 820-930 DEG C of steel pipe finishing temperature after control stretch-reducing mill or sizing mill deform；
It 10) is that 820-930 DEG C of steel pipe is quickly cooled to 600-700 DEG C in fast cooling device by finishing temperature；
11) by the steel pipe after rapid cooling, it is transported to cold bed, is cooled to room temperature；
12) steel pipe after cooling, through cold according to cutting head cutting tail, segmentation；
13) steel pipe after being segmented enters non-oxidation spheroidizing annealing furnace and carries out spheroidising, to obtain GCr15 Steel Pipe For Bearing mark
Quasi- required tissue and performance；
14) steel pipe after spheroidising, after carrying out surfaces externally and internally and dimension control and nondestructive inspection through Runout area, packet
It is packed into library.
Above-mentioned steps 12) -14) it can be regarded as post-processing steps in above-described embodiment.
In the above-described embodiments:
A) punch uses conic perforator, to be subsequent GCr15 Steel Pipe For Bearing, in tandem mill deformation, stretch reducing
Machine or mini-stretch reducing mill deformation provide dimensional accuracy excellent hollow ingot steel pipe.
B) the anti-oxidant gas of spray and antioxidant in hollow ingot (hollow ingot steel pipe) after perforating, such as nitrogen and borax, and nitrogen
The pressure of gas is not less than 0.2MPa, and antioxidant amounting sprays steel pipe internal-surface and is not less than 40g/m2, and the time is greater than 4s, to reduce
GCr15 Steel Pipe For Bearing inner wall oxide and raising surface quality.
C) GCr15 Steel Pipe For Bearing, before Multi-stand continuous rolling mill rolling, hollow ingot after perforation, warp tool core in interior insertion
Stick, it is necessary to be no less than that 30g/m2 graphite is water base or oil lubricant, in mandrel surface spraying graphite content to reduce GCr15 bearing
Steel pipe inner wall decarburization and raising surface quality.
D) Multi-stand continuous rolling mill uses three-roller type tandem mill (three-high mill), three-roller type tandem mill pass center and interior deformation
Tool plug center, eccentricity zero, so that the GCr15 Steel Pipe For Bearing of multi-frame tandem rolling tube machine rolling has good size essence
Degree.
E) stretch-reducing mill uses multi-frame three-roller tension reducing mill or mini-stretch reducing mill, and GCr15 Steel Pipe For Bearing enters more
Rack three-roller tension reducing mill or mini-stretch reducing mill temperature are 920-1000 DEG C, to guarantee good thermoplasticity and finish to gauge temperature
Degree.
F) GCr15 Steel Pipe For Bearing, after stretch-reducing mill or mini-stretch reducing mill deformation, finishing temperature control is in 820-
930 DEG C, then, 600-700 is cooled in GCr15 Steel Pipe For Bearing by quickly cooling device with the cooling velocity greater than 6 DEG C/s
DEG C enter cold bed carry out it is air-cooled, so as to control net carbide be precipitated, provided well for subsequent GCr15 Steel Pipe For Bearing spheroidizing
Tissue.
G) quickly cooling device after stretch-reducing mill or mini-stretch reducing mill is situated between using water or water and air as cooling
Matter, three sets or more have oval nozzle water ring with cyclic annular or ring-type, and hydraulic pressure is greater than 0.1MPa, to guarantee GCr15 bearing steel
The cooling effect that pipe passes through cooling device.
Therefore compared with prior art, it using technical solution of the present invention, has the advantages that: effectively improving outer
Diameter is less than the small-bore Steel Pipe For Bearing production efficiency of 114mm, reduces production cost, and expanding production specification is also beneficial to reduce energy
Consumption and carbon emission, are conducive to environmental protection.
Table 1 be according to embodiment of the present invention 57*5 produced, 76*5,89*6,108*10,114*8 GCr15 steel pipe,
4 points of actual measurement dimensional accuracies (mm) of outer diameter.
Table 1
Table 2 is 57*5,76*5,89*6,108*10,114*8 GCr15 steel pipe, 8 points of actual measurement dimensional accuracies of thickness of steel pipe.
Table 2
Table 3 is 57*5,76*5,89*6,108*10,114*8 GCr15 steel pipe, surveys steel pipe spheroidizing hardness.
Table 3
| Specification | 1 | 2 | 3 | It is average | Standard |
| 57*5 | 200 | 205 | 208 | 204 | 179-217 |
| 76*5 | 195 | 200 | 205 | 200 | 179-217 |
| 89*6 | 198 | 206 | 192 | 199 | 179-217 |
| 108*10 | 190 | 205 | 202 | 199 | 179-217 |
| 114*8 | 201 | 205 | 195 | 200 | 179-217 |
The present invention and original production mode heating method comparative example
Note: it Y: needs；N: it does not need
It is 300 yuan/ton through measuring and calculating reheating furnace ton steel cost, soft annealing of steel pipe needs 250 yuan/ton, so, it uses
The technology of the present invention, energy consumption per ton steel cost can reduce by 550 yuan/ton.
Fig. 3 a and Fig. 3 b are respectively the spherodized structure figure of prior art and the spherodized structure figure of present invention process.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than it is right
It is limited；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, the ordinary skill of this field
Personnel are it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part
Or all technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution
The range of each embodiment technical solution of the embodiment of the present invention.
Claims (9)
1. a kind of method for producing small-bore Steel Pipe For Bearing, which is characterized in that successively the following steps are included:
It perforates to form the first base pipe to filled circles heating of pipe blank；
Antioxidant and anti-oxidant gas are sprayed in the inner surface of the first base pipe, forms the second base pipe；
The plug that surface is coated with lubricant is inserted into the second base pipe and is rolled by three-high mill multi-frame, third base is formed
Pipe；
After the completion of rolling, plug and third base pipe are separated, the third base pipe for meeting the first preset temperature in reducing mill or is determined
The whole bundle temperature that diameter machine carries out tube reducing or sizing and subtract wall forming the 4th base pipe, and controlling the 4th base pipe is the second default temperature
Degree；
4th base pipe is cooled to third preset temperature, post-processing is carried out to the 4th base pipe after cooling, forms osculum journal axle
Hold steel pipe.
2. the method according to claim 1, wherein the lubricant of mandrel surface spraying is that content is no less than 30g/
m2Graphite is water base or oil lubricant.
3. the method according to claim 1, wherein first preset temperature is 920 DEG C -1000 DEG C.
4. the method according to claim 1, wherein second preset temperature is 820 DEG C -930 DEG C.
5. the method according to claim 1, wherein the 4th base pipe is cooled to third preset temperature, comprising:
By the 4th base pipe with the cooling velocity greater than 6 DEG C/s by quickly cooling device, enter when being cooled to 600-700 DEG C cold
Bed progress is air-cooled, is air-cooled to room temperature again when being cooled to 550 DEG C -650 DEG C.
6. according to the method described in claim 5, it is characterized in that, using water or water and air as cooling medium, three sets with
The upper water ring with cyclic annular or ring-type with oval nozzle keeps hydraulic pressure to be greater than 0.1MPa and is cooled down in quickly cooling device.
7. the anti-oxidant gas is the method according to claim 1, wherein the antioxidant is borax
Nitrogen.
8. the method according to claim 1, wherein the first base pipe inner surface spraying antioxidant and
Anti-oxidant gas, comprising:
It is not less than 0.2MPa according to the pressure of anti-oxidant gas, antioxidant is not less than in the quantity for spray of the first base pipe internal surface
40g/m2, the time sprayed greater than the condition of 4s in the inner surface of the first base pipe.
9. the method according to claim 1, wherein to filled circles heating of pipe blank, comprising:
1100-1180 DEG C is heated to filled circles pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319747.8A CN109663831A (en) | 2018-11-07 | 2018-11-07 | A method of producing small-bore Steel Pipe For Bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319747.8A CN109663831A (en) | 2018-11-07 | 2018-11-07 | A method of producing small-bore Steel Pipe For Bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109663831A true CN109663831A (en) | 2019-04-23 |
Family
ID=66142643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811319747.8A Pending CN109663831A (en) | 2018-11-07 | 2018-11-07 | A method of producing small-bore Steel Pipe For Bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109663831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340147A (en) * | 2019-07-12 | 2019-10-18 | 林州凤宝管业有限公司 | A kind of outer small-caliber seamless steel pipe production method through being less than 60mm |
| CN110814039A (en) * | 2019-12-27 | 2020-02-21 | 临清市东华轴承钢管有限责任公司 | Method for producing small-caliber bearing steel pipe |
| CN111097800A (en) * | 2020-03-02 | 2020-05-05 | 辽宁天丰特殊工具制造股份有限公司 | Short-process MPM production system and method for small-caliber steel pipes |
| CN114043176A (en) * | 2021-11-30 | 2022-02-15 | 安徽宝泰特种材料有限公司 | Method for manufacturing large-caliber magnesium and magnesium alloy seamless pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106452A (en) * | 1985-08-28 | 1987-04-08 | 高建民 | Three-roller negative feature corner set mill and punch |
| CN1055681A (en) * | 1991-04-13 | 1991-10-30 | 太原重型机械学院 | Hot rail three roller combined piercing for seamless pipe |
-
2018
- 2018-11-07 CN CN201811319747.8A patent/CN109663831A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106452A (en) * | 1985-08-28 | 1987-04-08 | 高建民 | Three-roller negative feature corner set mill and punch |
| CN1055681A (en) * | 1991-04-13 | 1991-10-30 | 太原重型机械学院 | Hot rail three roller combined piercing for seamless pipe |
Non-Patent Citations (1)
| Title |
|---|
| 梁文杰: "Φ180PQF连轧机组AG100H钢级隔热套管的生产工艺研究", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340147A (en) * | 2019-07-12 | 2019-10-18 | 林州凤宝管业有限公司 | A kind of outer small-caliber seamless steel pipe production method through being less than 60mm |
| CN110814039A (en) * | 2019-12-27 | 2020-02-21 | 临清市东华轴承钢管有限责任公司 | Method for producing small-caliber bearing steel pipe |
| CN111097800A (en) * | 2020-03-02 | 2020-05-05 | 辽宁天丰特殊工具制造股份有限公司 | Short-process MPM production system and method for small-caliber steel pipes |
| CN114043176A (en) * | 2021-11-30 | 2022-02-15 | 安徽宝泰特种材料有限公司 | Method for manufacturing large-caliber magnesium and magnesium alloy seamless pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109663831A (en) | A method of producing small-bore Steel Pipe For Bearing | |
| CN103934269B (en) | A kind of TC4 titanium alloy seamless tube and production method thereof | |
| CN101439350B (en) | Method for producing seamless steel pipe for producing gas cylinder with heavy caliber for hauled vehicle | |
| CN103272845B (en) | Hot rolling process of small-bore ultra-thin-wall seamless steel tube | |
| CN102039313B (en) | Method for producing large-diameter seamless steel pipe for gas cylinder | |
| CN102873512A (en) | Manufacture method of large-caliber medium-and-thick-wall seamless steel tube for nuclear power plant | |
| CN101426594B (en) | Process for producing stainless-steel pipe | |
| CN104259206B (en) | A kind of production method of the titanium alloy seamless pipe for tubing coupling | |
| CN111589871A (en) | Production line and production process of small-caliber thick-wall seamless steel pipe | |
| CN108160709B (en) | Titanium alloy hot-rolled seamless pipe production system and production process thereof | |
| CN102303065B (en) | Method for manufacturing seamless steel tube for vehicle-mounted large-diameter high pressure gas cylinder | |
| CN103736734A (en) | Process of preparing high-chromium alloy supper 13-Cr seamless steel tubes through CPE (cross-roll piercing and elongation) hot rolling mill | |
| CN104874606A (en) | Production method of high-chromium ferrite stainless steel seamless pipe | |
| CN102069104A (en) | Method for producing seamless steel tube for big-caliber long tube air bottle in hot rolling mode | |
| CN101190443B (en) | Method for manufacturing super-long titanium or titanium alloy tube | |
| CN104907353A (en) | Production method of high-chromium ferrite stainless-steel seamless steel pipe blank | |
| CN104889163B (en) | A kind of method of pure titanium seamless tubes roll piercing | |
| CN110170543A (en) | A kind of titanium alloy seamless pipe short route processing method | |
| CN206997345U (en) | A kind of minimum specification cord steel wire craft arrangement | |
| CN102873126B (en) | Manufacturing method of large-aperture thin-walled seamless steel tube for nuclear power plant | |
| CN102009069A (en) | Manufacturing process of small-caliber hot rolling seamless steel tubes | |
| CN101954377A (en) | Full-floating mandrel tandem-rolling seamless steel pipe production process | |
| CN102228905A (en) | Production process of hot continuous rolling seamless steel tube with small caliber | |
| CN110153199A (en) | A kind of controlled rolling method of large scale rod bar | |
| CN106269857A (en) | The production technology that carbon steel is coiled |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |
|
| RJ01 | Rejection of invention patent application after publication |