CN109226614B - Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method - Google Patents
Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method Download PDFInfo
- Publication number
- CN109226614B CN109226614B CN201811036059.0A CN201811036059A CN109226614B CN 109226614 B CN109226614 B CN 109226614B CN 201811036059 A CN201811036059 A CN 201811036059A CN 109226614 B CN109226614 B CN 109226614B
- Authority
- CN
- China
- Prior art keywords
- forming
- rolling mill
- mill
- steel piece
- distance
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 150
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000005098 hot rolling Methods 0.000 abstract description 10
- 239000011295 pitch Substances 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 description 15
- 239000011435 rock Substances 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002436 steel type Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/04—Making by means of profiled-rolls or die rolls
- B21H3/042—Thread-rolling heads
- B21H3/046—Thread-rolling heads working radially
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a forming rolling mill for rolling double-rotation-direction single-head threaded connection steel parts and a control method thereof, wherein the forming rolling mill comprises a rolling mill before forming, a first forming rolling mill and a second forming rolling mill; a synchronous code disc is arranged on the rolling mill before forming; the roller of the first forming mill is provided with a rolling groove corresponding to the right-handed thread section, the roller of the second forming mill is provided with a rolling groove corresponding to the left-handed thread section, the length of the right-handed thread section is smaller than the center distance between the first forming mill and the second forming mill, the length of the left-handed thread section is larger than the center distance between the first forming mill and the second forming mill, the upper roller of the first forming mill is in a normal state before rolling, the upper roller of the second forming mill is in a lifting state, and the roller is not in contact with a steel piece under the lifting state. The invention can realize continuous hot rolling forming of reverse threads with different pitches and with the product length larger than the diameter of the roller body.
Description
Technical Field
The invention relates to hot rolling equipment, in particular to hot rolling equipment for rolling a double-rotation-direction threaded connection steel part, and belongs to the technical field of hot rolling process equipment.
Background
The rock bolting technology is widely applied to the social foundation construction process, particularly in project engineering such as tunnel development, slope protection, mine excavation and the like, and the anchor bolt support technology is required to be adopted to strengthen surrounding rocks around the working face, so that the stability of the surrounding rocks is ensured to prevent collapse accidents.
The anchor rod has various structures, and a screw steel type resin anchor rod is currently used. The screw steel type resin anchor rod consists of screw steel type rod body, tail fastening nut and other accessories. When the anchor rod is operated, firstly, a hole is drilled in surrounding rock, then, a resin anchoring agent is plugged into the hole, the anchoring agent is pushed into the bottom of the hole by the anchor rod, the construction machine drives the anchor rod to rotate to stir the anchoring agent, the anchoring agent carries out chemical reaction to bond the anchor rod body and the surrounding rock into a whole, and the pre-tightening of the rod body is realized by a fastening nut in the later stage. The pretightening force is transmitted to the surrounding rock through other accessories of the anchor rod, so that the stress structure of the surrounding rock is changed, the stress of the surrounding rock is balanced, and the surrounding rock is prevented from collapsing. In an anchor bolt support system, the bonding strength of the rod body and surrounding rock, the material strength of the rod body and the connection strength of the rod body and the nut are all constraint factors of the strength of the whole support system, and the three are matched with each other.
The screw thread transverse rib of the existing screw thread steel type anchor rod is divided into a left-handed direction and a right-handed direction, and for the right-handed transverse rib anchor rod, a force for outward screwing out the anchoring agent is generated when the anchor rod rotates clockwise, namely the phenomenon of 'anchoring agent outward drawing' commonly known in industry. The phenomenon can cause loosening and non-compaction of the anchoring agent, influence the anchoring strength of the anchor rod and surrounding rock, and restrict the improvement of the strength of the whole anchoring system. For the left-handed transverse rib anchor rod, the left-handed transverse rib at the anchoring end can compact the anchoring agent when the anchor rod rotates clockwise, so that the anchoring strength is obviously improved. However, since the construction machine is usually clockwise (from the tail to the end), in order to enable the anchor rod to compact the anchoring agent while enabling the fastening nut of the tail of the anchor rod to move in a direction away from the tail to compress the surrounding rock wall, secondary machining is required to be performed on the tail of the anchor rod to form a right-handed thread. However, the secondary machining of the tail part of the anchor rod can cause the performance of the anchor rod body to be reduced, and the strength of the whole anchor rod system is restrained from being improved. And secondary processing of the tail part of the anchor rod can cause the increase of the production cost and the reduction of the production efficiency of the anchor rod.
Chinese patent 201420804404.1 discloses a screw with opposite screw threads, wherein the front end of a rod body is provided with left-hand screw threads or left-hand transverse ribs, the left-hand screw threads or the left-hand transverse ribs are continuous on the same screw surface, the rear end of the rod body is provided with right-hand screw threads, and the right-hand screw threads are continuous on the same screw surface; because the screw thread or the transverse rib of the front end of the rod body is in the left-hand direction, the compactness of the anchoring agent can be improved when the anchor rod rotates clockwise to stir, the bonding strength of the anchoring agent is improved, the screw thread of the rear end of the rod body is in the right-hand direction, secondary processing is not needed, the pretightening nut and the rear end of the rod body can be in threaded connection, the stress concentration and metal fiber fracture phenomenon caused by secondary processing are avoided, the performance of the anchor rod is improved, and meanwhile, the cost of the anchor rod is reduced.
However, this patent does not disclose a processing apparatus and a processing method for hot-rolling the screw.
Disclosure of Invention
In view of the above, the invention provides a forming mill for rolling double-rotation-direction threaded connection steel parts and a control method thereof, which can realize continuous hot rolling forming of reverse threads with different pitches and with the product length larger than the diameter of a roller body.
A forming mill for rolling a double-rotation-direction threaded connection steel part, wherein the forming mill comprises a pre-forming mill, a first forming mill and a second forming mill; the rolling mill is provided with a synchronous code disc before forming and is used for measuring the length of the steel piece; the rollers of the first forming rolling mill are provided with rolling grooves corresponding to the right-handed thread sections, the rollers of the second forming rolling mill are provided with rolling grooves corresponding to the left-handed thread sections, the upper rollers of the first forming rolling mill are in a normal state before rolling, the upper rollers of the second forming rolling mill are in a lifting state, and the rollers are not in contact with the steel piece in the lifting state.
A control method for rolling a double-rotation-direction threaded connection steel part comprises the following control steps when the length of a right-rotation-direction threaded section is smaller than the center distance of a first forming rolling mill and a second forming rolling mill and the length of a left-rotation-direction threaded section is larger than the center distance of the first forming rolling mill and the second forming rolling mill:
step one: when the steel piece enters the first forming mill, the travelling distance of the steel piece is measured by a code disc of the rolling mill before forming, and when the travelling distance of the steel piece is equal to the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the travelling distance of the steel piece is measured again by zero clearing of the code disc;
step two: when the secondary travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the second forming rolling mill is pressed down; resetting the code disc to restart measuring the travelling distance of the steel part;
step three: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming rolling mill is pressed down, and meanwhile, the code wheel is cleared to reset to measure the running distance of the steel piece;
step four: when the travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is lifted;
step five: when the travelling distance of the steel part is twice the length of the right-handed threads, the upper roller of the first forming mill is lifted; resetting the code disc to restart metering;
step six: when the walking distance of the steel piece is the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is pressed down;
step seven: and repeating the steps one to six until the rolling of the steel piece with the set length is completed.
Further, when the lengths of the right-handed thread section and the left-handed thread section are both greater than the center distance of the first forming mill and the second forming mill, the control steps are as follows:
step one: when the steel piece enters the first forming mill, the travelling distance of the steel piece is measured by a code disc of the rolling mill before forming, and when the travelling distance of the steel piece is equal to the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the travelling distance of the steel piece is measured again by zero clearing of the code disc;
step two: when the secondary travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the second forming rolling mill is pressed down; resetting the code disc to restart measuring the travelling distance of the steel part;
step three: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming mill is pressed down;
step four: when the running distance of the steel piece is twice the length of the left-handed threads, the second forming mill is lifted, and meanwhile, the code disc is cleared to reset to measure the running distance of the steel piece again;
step five: when the travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is lifted;
step five: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming mill is lifted; resetting the code disc to restart metering;
step six: when the walking distance of the steel piece is the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is pressed down;
step seven: and repeating the steps one to six until the rolling of the steel piece with the set length is completed.
Further, when the lengths of the right-handed thread section and the left-handed thread section are smaller than the center distance of the first forming mill and the second forming mill, the control steps are as follows:
step one: when the steel piece enters the first forming mill, the coded disc of the rolling mill starts to measure the running distance of the steel piece before forming, and when the running distance of the steel piece is equal to twice the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the coded disc is cleared to reset to measure the running distance of the steel piece;
step two: when the running distance of the steel piece is twice the length of the left-handed threads, the upper roller of the first forming mill is pressed down, when the running distance is equal to the center distance, the upper roller of the second forming mill is pressed down, and at the moment, the code wheel is cleared to reset to measure the running distance of the steel piece;
step three: when the running distance of the steel piece is equal to the double length of the left-handed thread, the upper roller of the first forming mill is lifted, and when the running distance of the steel piece is equal to the double length of the right-handed thread, the upper roller of the second forming mill is lifted, and at the moment, the code wheel is cleared to reset to measure the running distance of the steel piece;
step four: when the travelling distance of the steel piece is twice the length of the right-handed threads, the upper roller of the second forming mill is pressed down, and when the travelling distance of the steel piece is twice the length of the left-handed thread section minus the difference value between the center distance and twice the length of the right-handed threads, the upper roller of the first forming mill is pressed down, and the code wheel is cleared to reset to restart metering;
step five: and repeating the steps one to four until the rolling of the steel piece with the set length is completed.
The beneficial effects are that:
1. the hot rolling equipment can be used for carrying out one-time hot rolling forming on the double-rotation-direction threaded connection steel part, secondary processing is not needed, and the hot rolling equipment is simple in production, high in efficiency and low in cost. Because the product is directly formed by heating and rolling the steel billet, the phenomenon of stress concentration or metal fiber breakage of other products due to cold working is avoided, the strength and toughness of the product are higher than those of the cold-worked product, the overall performance of the product is always improved, and the performance bottleneck problem caused by cold working is avoided.
2. The control method can effectively control the whole rolling process and improve the rolling quality and the production efficiency of products.
Drawings
FIG. 1 is a schematic diagram of a product structure of a double-handed single-head threaded steel member of the present invention;
FIG. 2 is a schematic view of the structural principle of the forming mill of the present invention;
FIGS. 3-8 are schematic illustrations of a steel piece during rolling;
FIG. 9 is a schematic diagram of the structure of a double-rotation single-head threaded connection steel part after rolling forming;
FIG. 10 is a schematic view of a double-handed double-threaded steel coupling;
FIG. 11 is a schematic diagram of the structure of a double-screw double-thread screw-thread joint steel piece after rolling forming;
wherein: 1-a pre-forming rolling mill, 2-a first forming rolling mill and 3-a second forming rolling mill.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The invention provides a hot rolling device for rolling a double-rotation-direction threaded connection steel part, which is used for rolling the double-rotation-direction threaded connection steel part,
as shown in figure 1, one section of the threaded connection steel part is a left-handed high-pitch thread, the other section is a right-handed low-pitch thread, and the total length of the threaded connection steel part is L. The right-hand one section is marked as La, and the left-hand one section is marked as Lb.
As shown in fig. 2, the forming mill of the present invention includes a pre-forming mill 1, a first forming mill 2, and a second forming mill 3; a synchronous code disc is arranged on the rolling mill 1 before forming and is used for measuring the length of the steel piece; the roller of the first forming mill 2 is provided with a rolling groove corresponding to a right-handed thread section, the roller of the second forming mill 3 is provided with a rolling groove corresponding to a left-handed thread section, the length of the right-handed thread section La is smaller than the center distance LK of the first forming mill 2 and the second forming mill 3, the length of the left-handed thread section Lb is larger than the center distance LK of the first forming mill 2 and the second forming mill 3, the roller on the first forming mill 2 is in a normal state before rolling, the roller on the second forming mill 3 is in a lifting state, and the roller is not in contact with a steel piece under the lifting state.
Rolling process
As shown in fig. 3 and 4: when the steel part enters the first forming mill 2, the code disc of the rolling mill 1 starts to measure the running distance of the steel part before forming, when the running distance of the steel part is equal to the length of the right-handed thread section, the upper roller of the first forming mill 2 is lifted, and meanwhile, the code disc is cleared to reset to measure the running distance of the steel part, and at the moment, the second forming mill 3 is still in a lifted state;
as shown in fig. 5, when the steel piece again travels a distance equal to the center distance of the first forming mill 2 and the second forming mill 3, the second forming mill 3 is depressed; resetting the code disc to restart measuring the travelling distance of the steel part;
as shown in fig. 6, when the running distance of the steel part is twice the length of the left-handed screw minus the length of the center distance, the upper roller of the first forming mill 2 is pressed down, and the code wheel is cleared to reset to measure the running distance of the steel part;
as shown in fig. 7, when the traveling distance of the steel part is equal to the center distance of the first forming mill 2 and the second forming mill 3, the upper roll of the second forming mill is lifted;
when the travelling distance of the steel part is twice the length of the right-handed threads, the upper roller of the first forming rolling mill 2 is lifted; resetting the code disc to restart metering;
as shown in fig. 8, when the traveling distance of the steel piece is the center distance of the first forming mill 2 and the second forming mill 3, the upper rolls of the second forming mill 3 are pressed down;
the above process is repeatedly circulated until the rolling of the steel piece with the set length is completed.
The rolled product has the appearance shown in fig. 9.
According to the rolling equipment, the double-rotation-direction double-head threaded connection steel part shown in fig. 10 can be rolled in and out, the appearance of the rolled product is shown in fig. 11, and the rolled product is cut off according to the size of the target product.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The control method for rolling the double-rotation-direction threaded connection steel part is characterized by using a forming rolling mill, wherein the forming rolling mill comprises a pre-forming rolling mill, a first forming rolling mill and a second forming rolling mill; the rolling mill is provided with a synchronous code disc before forming and is used for measuring the length of the steel piece; the rollers of the first forming rolling mill are provided with rolling grooves corresponding to the right-handed thread sections, the rollers of the second forming rolling mill are provided with rolling grooves corresponding to the left-handed thread sections, the upper rollers of the first forming rolling mill are in a normal state before rolling, the upper rollers of the second forming rolling mill are in a lifting state, and the rollers are not contacted with the steel piece in the lifting state;
when the length of the right-handed thread section is smaller than the center distance of the first forming rolling mill and the second forming rolling mill, and the length of the left-handed thread section is larger than the center distance of the first forming rolling mill and the second forming rolling mill, the control steps are as follows:
step one: when the steel piece enters the first forming mill, the travelling distance of the steel piece is measured by a code disc of the rolling mill before forming, and when the travelling distance of the steel piece is equal to the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the travelling distance of the steel piece is measured again by zero clearing of the code disc;
step two: when the secondary travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the second forming rolling mill is pressed down; resetting the code disc to restart measuring the travelling distance of the steel part;
step three: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming rolling mill is pressed down, and meanwhile, the code wheel is cleared to reset to measure the running distance of the steel piece;
step four: when the travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is lifted;
step five: when the travelling distance of the steel part is twice the length of the right-handed threads, the upper roller of the first forming mill is lifted; resetting the code disc to restart metering;
step six: when the walking distance of the steel piece is the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is pressed down;
step seven: and repeating the steps one to six until the rolling of the steel piece with the set length is completed.
2. The control method for rolling the double-rotation-direction threaded connection steel part is characterized by using a forming rolling mill, wherein the forming rolling mill comprises a pre-forming rolling mill, a first forming rolling mill and a second forming rolling mill; the rolling mill is provided with a synchronous code disc before forming and is used for measuring the length of the steel piece; the rollers of the first forming rolling mill are provided with rolling grooves corresponding to the right-handed thread sections, the rollers of the second forming rolling mill are provided with rolling grooves corresponding to the left-handed thread sections, the upper rollers of the first forming rolling mill are in a normal state before rolling, the upper rollers of the second forming rolling mill are in a lifting state, and the rollers are not contacted with the steel piece in the lifting state;
when the lengths of the right-handed thread section and the left-handed thread section are both larger than the center distance of the first forming rolling mill and the second forming rolling mill, the control steps are as follows:
step one: when the steel piece enters the first forming mill, the travelling distance of the steel piece is measured by a code disc of the rolling mill before forming, and when the travelling distance of the steel piece is equal to the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the travelling distance of the steel piece is measured again by zero clearing of the code disc;
step two: when the secondary travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the second forming rolling mill is pressed down; resetting the code disc to restart measuring the travelling distance of the steel part;
step three: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming mill is pressed down;
step four: when the running distance of the steel piece is twice the length of the left-handed threads, the second forming mill is lifted, and meanwhile, the code disc is cleared to reset to measure the running distance of the steel piece again;
step five: when the travelling distance of the steel piece is equal to the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is lifted;
step five: when the running distance of the steel piece is twice the length of the left-handed threads minus the length of the center distance, the upper roller of the first forming mill is lifted; resetting the code disc to restart metering;
step six: when the walking distance of the steel piece is the center distance of the first forming rolling mill and the second forming rolling mill, the upper roller of the second forming rolling mill is pressed down;
step seven: and repeating the steps one to six until the rolling of the steel piece with the set length is completed.
3. The control method for rolling the double-rotation-direction threaded connection steel part is characterized by using a forming rolling mill, wherein the forming rolling mill comprises a pre-forming rolling mill, a first forming rolling mill and a second forming rolling mill; the rolling mill is provided with a synchronous code disc before forming and is used for measuring the length of the steel piece; the rollers of the first forming rolling mill are provided with rolling grooves corresponding to the right-handed thread sections, the rollers of the second forming rolling mill are provided with rolling grooves corresponding to the left-handed thread sections, the upper rollers of the first forming rolling mill are in a normal state before rolling, the upper rollers of the second forming rolling mill are in a lifting state, and the rollers are not contacted with the steel piece in the lifting state;
when the lengths of the right-handed thread section and the left-handed thread section are smaller than the center distance of the first forming rolling mill and the second forming rolling mill, the control steps are as follows:
step one: when the steel piece enters the first forming mill, the coded disc of the rolling mill starts to measure the running distance of the steel piece before forming, and when the running distance of the steel piece is equal to twice the length of the right-handed thread section, the upper roller of the first forming mill is lifted, and meanwhile, the coded disc is cleared to reset to measure the running distance of the steel piece;
step two: when the running distance of the steel piece is twice the length of the left-handed threads, the upper roller of the first forming mill is pressed down, when the running distance is equal to the center distance, the upper roller of the second forming mill is pressed down, and at the moment, the code wheel is cleared to reset to measure the running distance of the steel piece;
step three: when the running distance of the steel piece is equal to the double length of the left-handed thread, the upper roller of the first forming mill is lifted, and when the running distance of the steel piece is equal to the double length of the right-handed thread, the upper roller of the second forming mill is lifted, and at the moment, the code wheel is cleared to reset to measure the running distance of the steel piece;
step four: when the travelling distance of the steel piece is twice the length of the right-handed threads, the upper roller of the second forming mill is pressed down, and when the travelling distance of the steel piece is twice the length of the left-handed thread section minus the difference value between the center distance and twice the length of the right-handed threads, the upper roller of the first forming mill is pressed down, and the code wheel is cleared to reset to restart metering;
step five: and repeating the steps one to four until the rolling of the steel piece with the set length is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036059.0A CN109226614B (en) | 2018-09-06 | 2018-09-06 | Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036059.0A CN109226614B (en) | 2018-09-06 | 2018-09-06 | Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109226614A CN109226614A (en) | 2019-01-18 |
| CN109226614B true CN109226614B (en) | 2023-12-29 |
Family
ID=65060956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811036059.0A Active CN109226614B (en) | 2018-09-06 | 2018-09-06 | Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226614B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU954123A1 (en) * | 1976-06-01 | 1982-08-30 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Method of adjusting three-high screw rolling mill |
| JPS58225264A (en) * | 1982-06-24 | 1983-12-27 | Mitsuba Denki Seisakusho:Kk | Inverse helical worm and manufacture of the same by way of rolling |
| CN2057119U (en) * | 1989-08-12 | 1990-05-16 | 冶金工业部钢铁研究总院 | Compact type rolling mill for cold-rolled torsteel |
| DE19811409A1 (en) * | 1998-03-17 | 1999-09-23 | Manfred Froehlke | Wire forming process for wire with periodically changing diameter |
| JP2000051983A (en) * | 1998-08-07 | 2000-02-22 | Toyota Motor Corp | Method for form rolling |
| CN102363152A (en) * | 2011-10-14 | 2012-02-29 | 山东焱鑫矿用材料加工有限公司 | Production equipment of steel for non-cold processing joint |
| CN209439362U (en) * | 2018-09-06 | 2019-09-27 | 山东焱鑫矿用材料加工有限公司 | A kind of molding milling train rolling double rotational directions thread connection steel part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5420712B2 (en) * | 2012-04-19 | 2014-02-19 | 株式会社トーカイ | Deformed bar threaded rebar joint and its threaded deformed bar |
-
2018
- 2018-09-06 CN CN201811036059.0A patent/CN109226614B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU954123A1 (en) * | 1976-06-01 | 1982-08-30 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Method of adjusting three-high screw rolling mill |
| JPS58225264A (en) * | 1982-06-24 | 1983-12-27 | Mitsuba Denki Seisakusho:Kk | Inverse helical worm and manufacture of the same by way of rolling |
| CN2057119U (en) * | 1989-08-12 | 1990-05-16 | 冶金工业部钢铁研究总院 | Compact type rolling mill for cold-rolled torsteel |
| DE19811409A1 (en) * | 1998-03-17 | 1999-09-23 | Manfred Froehlke | Wire forming process for wire with periodically changing diameter |
| JP2000051983A (en) * | 1998-08-07 | 2000-02-22 | Toyota Motor Corp | Method for form rolling |
| CN102363152A (en) * | 2011-10-14 | 2012-02-29 | 山东焱鑫矿用材料加工有限公司 | Production equipment of steel for non-cold processing joint |
| CN209439362U (en) * | 2018-09-06 | 2019-09-27 | 山东焱鑫矿用材料加工有限公司 | A kind of molding milling train rolling double rotational directions thread connection steel part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109226614A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4689984A (en) | Method for producing male conical threads | |
| CN101784753B (en) | Hollow rock bolt, self -drilling rock bolt and method of forming a hollow rock bolt | |
| US3561185A (en) | Armoring and stressing rod for concrete | |
| AU2009200738A1 (en) | Process for Forming a Threaded Member | |
| NO127339B (en) | ||
| CN104265339A (en) | Extrusion and friction type energy absorption anchor rod | |
| US11752540B2 (en) | Twisted helically shaped member | |
| AU2001239007A1 (en) | Process for forming a threaded member | |
| US4056911A (en) | Steel bar for concrete reinforcement having a non-circular cross-section | |
| CN109226614B (en) | Forming rolling mill for rolling double-rotation-direction threaded connection steel part and control method | |
| AU2021355576A9 (en) | Dual-connection drill rod imitating animal rib-bone structure | |
| CN209891573U (en) | Rotary connection type steel bar connecting assembly | |
| CN209439362U (en) | A kind of molding milling train rolling double rotational directions thread connection steel part | |
| CN212105915U (en) | Continuous rib anchor rod steel | |
| CN209139718U (en) | A kind of molding milling train rolling double rotational directions thread connection steel part | |
| KR20170132936A (en) | anchor bolt manufacturing | |
| CN208105672U (en) | A kind of screw-thread steel adapter | |
| EP0800615A1 (en) | Rod for an anchor inserted by drilling and injection grouting | |
| CN205806178U (en) | Antifriction nut | |
| CN221422446U (en) | Sectional bearing type steel bar straight thread sleeve | |
| CN203939183U (en) | A kind of threaded reinforcing bar joint | |
| CN208586505U (en) | A kind of bridge lock cable casing for municipal science of bridge building | |
| CN201209293Y (en) | Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress | |
| CN220014217U (en) | Straight-through type connecting sleeve of reinforcing steel bar | |
| CN216895239U (en) | High manganese expanding-pulling combined anchor protector |
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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Dewen Inventor after: Wu Xiuliang Inventor after: Li Chen Inventor after: Gao Yue Inventor after: Liu Min Inventor after: Gong Xujin Inventor before: Zhang Dewen Inventor before: Li Chen Inventor before: Gao Yue Inventor before: Liu Min Inventor before: Gong Xujin Inventor before: Wu Xiuliang |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |