CN101570813A - Device and method for directly quenching seamless steel pipes - Google Patents
Device and method for directly quenching seamless steel pipes Download PDFInfo
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- CN101570813A CN101570813A CN200910011918.5A CN200910011918A CN101570813A CN 101570813 A CN101570813 A CN 101570813A CN 200910011918 A CN200910011918 A CN 200910011918A CN 101570813 A CN101570813 A CN 101570813A
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- cooling
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000010791 quenching Methods 0.000 title claims abstract description 50
- 230000000171 quenching effect Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000002352 surface water Substances 0.000 claims description 34
- 102000010637 Aquaporins Human genes 0.000 claims description 17
- 108010063290 Aquaporins Proteins 0.000 claims description 17
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000007665 sagging Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a device and a method for directly quenching seamless steel pipes, which belongs to the technical field of metallurgy. The device comprises a variable-angle roller bed device, an outer-surface cooling device and an inner-surface cooler, wherein the inner-surface cooler is in a rod shape; the outer-surface cooling device consists of at least one annular cooler; the inner-surface cooler is positioned above the variable-angle roller bed device; and the inner-surface cooler is inserted in the middle of an annular wall. The method comprises the steps of supplying cooling media to the inner-surface cooler and the outer-surface cooling device, conveying steel pipes to the inside of the annular cooler and the outside of the inner-surface cooler and implementing quenching. The invention can solve the problem that steel pipes are easy to bend in a quenching process. The device has the advantages of simple structure and convenient operation.
Description
Technical field
The invention belongs to metallurgical technology field, the spy is related to a kind of directly quenching seamless steel pipes device and method.
Background technology
Direct quenching technology (DQ) is to improve the important means of ferrous materials comprehensive mechanical property.In the seamless steel tube production field, many direct quenching method and apparatus have been developed.But, because the weldless steel tube shape of product, to the technology and the technology and few of the direct spray quenching of steel pipe internal-surface, the direct quenching method that adopts mainly contains two kinds at present, a kind of is that immersion type quenches, and this method is suitable for the tubing of multiple bore, but the back tubing that quenches is crooked easily; Another kind is that the outer pouring formula of interior spray is quenched, and this method is only applicable to minor caliber pipe, can not quench to heavy caliber pipe.
Summary of the invention
The objective of the invention is the problem that above technology exists, a kind of directly quenching seamless steel pipes device and method is provided, purpose is to provide a kind of quench treatment that is applicable to heavy caliber seamless steel pipe, when guaranteeing that tubing quenches not the Yin Wendu inequality bend.
Directly quenching seamless steel pipes device of the present invention comprises variable-angle roller-way device, and outside surface refrigerating unit and internal surface water cooler, internal surface water cooler are shaft-like, its outside surface is provided with posticum, inside is provided with aquaporin, and posticum is communicated with aquaporin, and aquaporin is provided with water-in.Variable-angle roller-way device is by vertebra forming roll road group, horizontal rotary mechanism and electrical element operating device are formed; Be equipped with a horizontal rotary mechanism and a cover electrical element operating device below vertebra forming roll road group, electrical element operating device and horizontal rotary mechanism are assembled together.
The outside surface refrigerating unit comprises at least one annular water cooler, and each annular water cooler is made of an annular wall and a water cavity, and annular wall is provided with spout hole, and spout hole is communicated with water cavity, and water cavity is provided with water-in.
The internal surface water cooler is positioned at the top of variable-angle roller-way device, and the internal surface water cooler inserts the centre of annular wall.
Above-mentioned vertebra forming roll road group is divided into section after cooling front section, cooling section and the cooling vertically, and annular water cooler is positioned at the top of cooling back section and cooling section; The length of cooling front section and cooling back section is greater than the length of processing steel pipe.
The two ends of above-mentioned internal surface water cooler are divided into inboardend and free end, and the projection of inboardend is positioned at the place beyond the vertebra forming roll road group; Free end is positioned at the top of cooling front section; The total area of posticum is not more than the cross-sectional area of aquaporin, and the axis of each posticum is by the annular wall of annular water cooler; The external diameter of internal surface water cooler is less than the internal diameter of processing steel pipe.
Above-mentioned vertebra forming roll road group is had is a plurality of to vertebra forming roll road, during to the medullary ray at place, vertebra forming roll road and starting position vertebra forming roll road medullary ray angle theta is 10 °～45.To the starting position in vertebra forming roll road is to the axis in vertebra forming roll road and the position when vertical to the medullary ray of vertebra forming roll road group.
Horizontal rotary mechanism is made up of rotator group and connecting rod, each rotator of rotator group is made up of rotating base, rotary sleeve and three bearings, three bearings are respectively horizontal bearing, locating bearing and alignment bearing, be sequentially arranged in from top to bottom rotating base below; Each rotator and one are fixed together to vertebra forming roll road, can rotate simultaneously with rotator, link together by rotary sleeve with connecting rod between each rotator.
The electrical element operating device comprises Controlling System, near switch or displacement encoder, hydraulicvalve platform, hydro-cylinder and hydraulic cylinder piston rod, but wherein hydraulic cylinder piston rod is connected with connecting rod and the drivening rod motion.Employing is fitted in rotator near switch during near switch; By control the stroke of hydro-cylinder near the transmission signal of switch; When adopting displacement encoder, by the stroke of displacement encoder control hydro-cylinder.
The angular adjustment mode of operation of variable-angle roller-way device is: the stroke of setting hydraulic cylinder piston rod by displacement encoder (or near switch); After Controlling System obtains rotate instruction, move by hydraulicvalve platform control hydro-cylinder, hydro-cylinder drives hydraulic cylinder piston rod, hydraulic cylinder piston rod moves by connecting rod driven rotary axle sleeve, make variable-angle roller-way group produce rotation, the consistent variation of angle of each rotating base and variable-angle roller-way group is when hydraulic cylinder piston rod promotes rotary sleeve to desired location, displacement encoder (or near switch) control hydraulicvalve platform is closed, and spinning movement is finished.
Above-mentioned Controlling System is PLC Controlling System or other programmable Controlling System.
Directly quenching seamless steel pipes method of the present invention adopts said apparatus, carries out according to the following steps:
1, inwardly the aquaporin of surface cooler feeds heat-eliminating medium, owing to entered heat-eliminating medium in the aquaporin, the free end meeting is sagging and produce slight swing, after the internal surface water cooler is stable, keep the heat-eliminating medium circulation, will prepare the quenching steel pipe and place the cooling front section.
2, feed heat-eliminating medium to annular water cooler; Startup is to vertebra forming roll road group, the steel pipe that preparation is quenched moves in a spiral manner, steel pipe is entered the cooling section from the cooling front section, steel pipe enters in the annular inner wall of annular water cooler, the internal surface water cooler inserts the inside of steel pipe simultaneously, the internal surface of steel pipe and outside surface be the contact cooling medium simultaneously, implements to quench; After steel pipe passed through cooling section fully, quenching was finished.
During quenching, spin formula motion of steel pipe under the condition to vertebra forming roll road invariablenes turning speed, changes vertebra forming roll road angle by regulating, and regulates the travelling speed of steel pipe, and the roller-way medullary ray angle theta when to the roller-way medullary ray of vertebra forming roll road group and starting position is θ
1The time, the horizontal motion speed of steel pipe is v
1, the roller-way medullary ray angle theta when to the roller-way medullary ray of vertebra forming roll road group and starting position is θ
2The time, the movement velocity of steel pipe is v
2, work as θ
1＞θ
2The time, v
1＜v
2Therefore, can realize steel pipe temperature process parameter control to position, vertebra forming roll road by control.
3, after quenching was finished, steel pipe was positioned at cooling back section, by to the group reverse rotation of vertebra forming roll road, steel pipe is sent back the cooling front section, removes the steel pipe that quenches and finish, and carries out the quenching of next steel pipe then in a manner described.
Find in the research when steel pipe kept spiral movement, no matter water cooler adopted which kind of type of cooling (as laminar flow, turbulent flow or aerosol etc.), can guarantee the even cooling of steel pipe at length direction and circumferential direction, avoid the generation of steel pipe quenching back buckling phenomenon.
Internal surface water cooler of the present invention can be deformed by influence of gravity under the situation of logical heat-eliminating medium, and free end sinks, and when therefore making the internal surface water cooler, need according to circumstances be prepared into the shape that free end is bent upwards; Free end sinking under action of gravity during use causes internal surface water cooler trend straight; The internal surface that the degree that free end is bent upwards during preparation internal surface water cooler when can guarantee to quench does not contact the steel pipe of being handled is as the criterion.
The present invention adopts conventional mechanical means, by the spiral movement of variable-angle roller-way maintenance steel pipe, by increasing an internal surface water cooler simple in structure, quenches when need quenching steel pipe is implemented surfaces externally and internally simultaneously; Easy crooked problem when this method can solve large-diameter steel pipe, test by experiment, no buckling phenomenon generation after steel pipe quenches.Apparatus structure of the present invention is simple, and is easy to operate, has a good application prospect.
Description of drawings
Fig. 1 is that the directly quenching seamless steel pipes device in the embodiment of the invention is used synoptic diagram;
Fig. 2 is the annular cooler construction synoptic diagram of the directly quenching seamless steel pipes device in the embodiment of the invention;
Fig. 3 is the internal surface water cooler local structure synoptic diagram of the directly quenching seamless steel pipes device in the embodiment of the invention;
Fig. 4 uses synoptic diagram for the quenching mode in the embodiment of the invention;
Fig. 5 is the rotation body structure synoptic diagram in the embodiment of the invention;
Fig. 6 is that the horizontal rotary mechanism and the electrical element operating device of hot-rolled seamless tube on-line accelerated cooling device of the present invention used synoptic diagram;
A, preproduction phase quenching stage apparatus synoptic diagram among the figure, b, steel pipe place cooling front section synoptic diagram, c, quench and finish the stage synoptic diagram, d, remove the steel pipe that finishes that quenches and carry out next steel pipe step synoptic diagram; Wherein 1, to vertebra forming roll road, 2, the internal surface water cooler, 3, the annular water cooler, 4, water cooler workspace (cooling section), 5, the cooling front section, 6, cooling back section, 7, weldless steel tube, 8, follow-up weldless steel tube, 9, to vertebra forming roll road starting position medullary ray, 10, roller-way medullary ray when vertebra forming roll road angle is changed, 11, internal surface water cooler water-in, 12, outside surface water cooler water-in, 13, annular wall, 14, water cavity, 15, spout hole, 16, aquaporin, 17, posticum, 18, heat-eliminating medium, 19, rotating base, 20, rotary sleeve, 21, horizontal bearing, 22, locating bearing, 23, alignment bearing, 24, near switch, 25, connecting rod, 26, hydro-cylinder, 27, hydraulic cylinder piston rod, 28 pairs of vertebra forming roll road group switching centre lines.
Embodiment
The heat-eliminating medium that adopts in the embodiment of the invention is a water.
Embodiment
The directly quenching seamless steel pipes device as shown in Figure 1, comprise variable-angle roller-way device, outside surface refrigerating unit and internal surface water cooler 2, internal surface water cooler 2 is shaft-like, local structure as shown in Figure 3, outside surface is provided with posticum 17, inside is provided with aquaporin 16, and posticum 17 is communicated with aquaporin 16, and aquaporin 16 is provided with internal surface water cooler water-in 11; The outside surface refrigerating unit comprises 4 annular water coolers, annular water cooler 3 structures as shown in Figure 2, constitute by an annular wall 13 and a water cavity 14, annular wall 14 is provided with spout hole 15, spout hole 15 is communicated with water cavity 14, water cavity 14 is provided with outside surface water cooler water-in 12, and the water-in of each annular water cooler interconnects by pipeline.
Variable-angle roller-way device is by vertebra forming roll road group, horizontal rotary mechanism and electrical element operating device are formed; Vertebra forming roll road group is had a plurality of to vertebra forming roll road, to being equipped with a horizontal rotary mechanism and a cover electrical element operating device below the vertebra forming roll road group, electrical element operating device and horizontal rotary mechanism are assembled together.Each annular water cooler adjacent two to vertebra forming roll road between.Horizontal rotary mechanism is made up of rotator group and connecting rod 25, each rotation body structure of rotator group as shown in Figure 5, form by rotating base 19, rotary sleeve 20 and three bearings, three bearings are respectively horizontal bearing 21, locating bearing 22 and alignment bearing 23, be sequentially arranged in from top to bottom rotating base below; Each rotator and one are fixed together to vertebra forming roll road 1, can rotate simultaneously with rotator, link together by rotary sleeve 20 with connecting rod 25 between each rotator.The electrical element operating device comprises Controlling System, near switch 24, hydraulicvalve platform, hydro-cylinder 26 and hydraulic cylinder piston rod 27, but wherein hydraulic cylinder piston rod 27 is connected with connecting rod 25 and drivening rod 25 motions.Controlling System is the PLC Controlling System.The application mode of electrical element operating device and horizontal rotary mechanism as shown in Figure 6.
Internal surface water cooler 2 is positioned at the top of variable-angle roller-way device, and internal surface cools off the centre that 2 devices insert annular wall 13.Annular water cooler 3 be positioned at adjacent two in the middle of the vertebra forming roll road.
Vertebra forming roll road group is divided into cooling front section 5, cooling section 4 and cooling back section 6 vertically, and annular water cooler 2 is positioned at the top of cooling back section and cooling section; The length of cooling front section and cooling back section is greater than the length of processing steel pipe.
The two ends of internal surface water cooler are divided into inboardend and free end, and inboardend is by being fixed on the section basis in addition, cooling back; Free end is positioned at the top of cooling front section; The total area of posticum is not more than the cross-sectional area of aquaporin, and the axis of each posticum is by the annular wall of annular water cooler, and relative with the spout hole position on the annular wall.
To the medullary ray 10 of present position, vertebra forming roll road during with starting position vertebra forming roll road medullary ray 9 angle theta being 10 °～45, is to the axis in vertebra forming roll road and the position when vertical to the medullary ray 28 of vertebra forming roll road group to the starting position in vertebra forming roll road.
Adopt said apparatus, inwardly the aquaporin of surface cooler feeds cold water, and free end is sagging and produce slight swing, after the internal surface water cooler is stable, keeps the cold water circulation, will prepare the quenching steel pipe and place the cooling front section.
Feed cold water to annular water cooler; Startup is to vertebra forming roll road group, the steel pipe that preparation is quenched enters the cooling section from the cooling front section, steel pipe moves in a spiral manner, steel pipe enters in the annular inner wall of annular water cooler, the internal surface water cooler inserts the inside of steel pipe simultaneously, the internal surface of steel pipe contacts cold water simultaneously with outside surface, implements to quench; After steel pipe passed through cooling section fully, quenching was finished.
Above-mentioned annular water cooler and the water flowing of internal surface water cooler are by the unified control of the Controlling System of operator's console.
After quenching was finished, steel pipe was positioned at cooling back section, by to the group reverse rotation of vertebra forming roll road, steel pipe is sent back the cooling front section, removes the steel pipe that quenches and finish, and carries out the quenching of next steel pipe then in a manner described.
The internal surface water cooler external diameter that adopts is 273mm.
In a manner described Φ 508 * 16 steel pipes, Φ 609 * 30 steel pipes and Φ 710 * 20 steel pipes are carried out quench treatment respectively, establishing roller-way medullary ray and starting position angle theta respectively is 10 °, 20 °, 30 ° and 45 °, and quenching effect is as shown in table 1.
Table 1 directly quenching seamless steel pipes effect
Bending phenomenon occurs for steel pipe after the quenching, and the cool time is short, efficient is high.
Claims (7)
1, a kind of directly quenching seamless steel pipes device is characterized in that this device comprises variable-angle roller-way device, outside surface refrigerating unit and internal surface water cooler, wherein the internal surface water cooler is shaft-like, its outside surface is provided with posticum, and inside is provided with aquaporin, and posticum is communicated with aquaporin; The outside surface refrigerating unit is made up of at least one annular water cooler, and each annular water cooler is made of an annular wall and a water cavity, and annular wall is provided with spout hole, and spout hole is communicated with water cavity; Variable-angle roller-way device is by vertebra forming roll road group, horizontal rotary mechanism and electrical element operating device are formed, be equipped with a horizontal rotary mechanism and a cover electrical element operating device below vertebra forming roll road group, electrical element operating device and horizontal rotary mechanism are assembled together; The internal surface water cooler is positioned at the top to vertebra forming roll road group, and the internal surface water cooler inserts the centre of annular wall.
2, a kind of directly quenching seamless steel pipes device according to claim 1, it is characterized in that described vertebra forming roll road group being divided into section after cooling front section, cooling section and the cooling vertically, described annular water cooler is positioned at the top of cooling back section and cooling section; The length of cooling front section and cooling back section is greater than the length of processing steel pipe.
3, a kind of directly quenching seamless steel pipes device according to claim 1 is characterized in that the total area of the posticum of described internal surface water cooler is less than or equal to the cross-sectional area of aquaporin, and the axis of each posticum is by the annular wall of annular water cooler.
4, a kind of directly quenching seamless steel pipes device according to claim 1, it is characterized in that describedly vertebra forming roll road group being had a plurality of, during to the medullary ray at place, vertebra forming roll road and starting position vertebra forming roll road medullary ray angle theta is 10 °～45 vertebra forming roll road.
5, a kind of method that adopts the described weldless steel tube quenching device of claim 1 to implement directly quenching seamless steel pipes, it is characterized in that carrying out according to the following steps: (1) inwardly the aquaporin of surface cooler feeds heat-eliminating medium, owing to entered heat-eliminating medium in the aquaporin, sagging and the slight swing of generation of free end meeting, after the internal surface water cooler is stable, keep the heat-eliminating medium circulation, preparation quenching steel pipe is placed cooling front section to vertebra forming roll road group; (2) feed heat-eliminating medium to annular water cooler; Startup is to vertebra forming roll road group, the steel pipe that preparation is quenched moves on to vertebra forming roll road group, when entering cooling section from cooling off front section, steel pipe enters in the annular inner wall of annular water cooler, the internal surface water cooler inserts the inside of steel pipe simultaneously, the internal surface of steel pipe and outside surface be the contact cooling medium simultaneously, implements to quench; After steel pipe passed through cooling section fully, quenching was finished.
6, a kind of directly quenching seamless steel pipes method according to claim 5, when it is characterized in that steel pipe moves on to vertebra forming roll road group, steel pipe moves in a spiral manner.
7, a kind of directly quenching seamless steel pipes method according to claim 5 is characterized in that steel pipe when operation, and the roller-way medullary ray angle theta when to the roller-way medullary ray of vertebra forming roll road group and starting position is θ
1The time, the horizontal motion speed of steel pipe is v
1, the roller-way medullary ray angle theta when to the roller-way medullary ray of vertebra forming roll road group and starting position is θ
2The time, the movement velocity of steel pipe is v
2, work as θ
1＞θ
2The time, v
1＜v
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910011918.5A CN101570813A (en) | 2009-06-09 | 2009-06-09 | Device and method for directly quenching seamless steel pipes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910011918.5A CN101570813A (en) | 2009-06-09 | 2009-06-09 | Device and method for directly quenching seamless steel pipes |
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| CN101570813A true CN101570813A (en) | 2009-11-04 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732701A (en) * | 2012-07-17 | 2012-10-17 | 新兴铸管股份有限公司 | Method for carrying out quenching on bimetal tube with outer low-carbon steel layer and inner high-carbon-chromium bearing steel layer |
| CN103484631A (en) * | 2013-09-05 | 2014-01-01 | 通裕重工股份有限公司 | Long and thin thick-wall small-caliber gun barrel jet quenching equipment and jet quenching process |
| CN104630442A (en) * | 2014-12-18 | 2015-05-20 | 浙江金洲管道科技股份有限公司 | Cooler for cooling steel tubes |
| CN105081194A (en) * | 2015-09-22 | 2015-11-25 | 洛阳圣久锻件有限公司 | Cooling and spraying device for annular part |
| CN105219935A (en) * | 2015-11-17 | 2016-01-06 | 山东华民钢球股份有限公司 | A kind of steel frotton mechanism of automatically gravying with meat or vegetables poured over rice or noodles |
| CN105714093A (en) * | 2014-12-25 | 2016-06-29 | 马鞍山市天马冶金材料有限公司 | Quenching method for roller sleeve |
| CN106040758A (en) * | 2016-05-26 | 2016-10-26 | 马鞍山市安工大工业技术研究院有限公司 | Online accelerated cooling method for production of hot rolled seamless steel tube |
| CN106269932A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling device |
| CN106755904A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气集团公司 | A kind of device and method for improving steel tube performance |
| CN111074054A (en) * | 2019-12-18 | 2020-04-28 | 中联重科股份有限公司 | Pipe fitting inner surface quenching device and method for quenching pipe fitting inner surface |
| CN112378166A (en) * | 2020-11-16 | 2021-02-19 | 灵璧久工精密钢管制造有限公司 | Cooling device for seamless steel tube machining and using method thereof |
-
2009
- 2009-06-09 CN CN200910011918.5A patent/CN101570813A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732701A (en) * | 2012-07-17 | 2012-10-17 | 新兴铸管股份有限公司 | Method for carrying out quenching on bimetal tube with outer low-carbon steel layer and inner high-carbon-chromium bearing steel layer |
| CN103484631A (en) * | 2013-09-05 | 2014-01-01 | 通裕重工股份有限公司 | Long and thin thick-wall small-caliber gun barrel jet quenching equipment and jet quenching process |
| CN103484631B (en) * | 2013-09-05 | 2016-03-30 | 通裕重工股份有限公司 | The small-bore gun tube of elongated heavy wall sprays technique of quenching |
| CN104630442A (en) * | 2014-12-18 | 2015-05-20 | 浙江金洲管道科技股份有限公司 | Cooler for cooling steel tubes |
| CN105714093B (en) * | 2014-12-25 | 2017-06-16 | 马鞍山市天马冶金材料有限公司 | A kind of process for quenching for roller set |
| CN105714093A (en) * | 2014-12-25 | 2016-06-29 | 马鞍山市天马冶金材料有限公司 | Quenching method for roller sleeve |
| CN105081194A (en) * | 2015-09-22 | 2015-11-25 | 洛阳圣久锻件有限公司 | Cooling and spraying device for annular part |
| CN105219935A (en) * | 2015-11-17 | 2016-01-06 | 山东华民钢球股份有限公司 | A kind of steel frotton mechanism of automatically gravying with meat or vegetables poured over rice or noodles |
| CN105219935B (en) * | 2015-11-17 | 2017-11-17 | 山东华民钢球股份有限公司 | A kind of automatic mechanism of gravying with meat or vegetables poured over rice or noodles of steel frotton |
| CN106040758A (en) * | 2016-05-26 | 2016-10-26 | 马鞍山市安工大工业技术研究院有限公司 | Online accelerated cooling method for production of hot rolled seamless steel tube |
| CN106269932A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling device |
| CN106755904A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气集团公司 | A kind of device and method for improving steel tube performance |
| CN111074054A (en) * | 2019-12-18 | 2020-04-28 | 中联重科股份有限公司 | Pipe fitting inner surface quenching device and method for quenching pipe fitting inner surface |
| CN111074054B (en) * | 2019-12-18 | 2021-06-22 | 中联重科股份有限公司 | Pipe fitting inner surface quenching device and method for quenching pipe fitting inner surface |
| CN113265529A (en) * | 2019-12-18 | 2021-08-17 | 中联重科股份有限公司 | Pipe fitting inner surface quenching device and method for quenching pipe fitting inner surface |
| CN113265529B (en) * | 2019-12-18 | 2022-01-25 | 中联重科股份有限公司 | Pipe fitting inner surface quenching device and method for quenching pipe fitting inner surface |
| CN112378166A (en) * | 2020-11-16 | 2021-02-19 | 灵璧久工精密钢管制造有限公司 | Cooling device for seamless steel tube machining and using method thereof |
| CN112378166B (en) * | 2020-11-16 | 2021-12-28 | 灵璧久工精密钢管制造有限公司 | Cooling device for seamless steel tube machining and using method thereof |
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Open date: 20091104 |