CN111085541A - Method for producing rare earth sucker rod by large-coil process - Google Patents
Method for producing rare earth sucker rod by large-coil process Download PDFInfo
- Publication number
- CN111085541A CN111085541A CN201910997602.1A CN201910997602A CN111085541A CN 111085541 A CN111085541 A CN 111085541A CN 201910997602 A CN201910997602 A CN 201910997602A CN 111085541 A CN111085541 A CN 111085541A
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- Prior art keywords
- bar
- coil
- curling
- machine
- rare earth
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/02—Winding-up or coiling
- B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method for producing a rare earth sucker rod by a large coiling process, wherein the large coiling process comprises a bar online temperature control and conveying system, a coiling operation system and a coiling finishing system, the bar online temperature control and conveying system is arranged beside a bar cooling bed line after finish rolling, a rolled piece is quickly cooled by a cooling device, is coiled by a coiling machine when being cooled to 500-550 ℃, and is subjected to a self-tempering process after being coiled; two curling machines are adopted to work alternately, when one curling machine curls the bar, the other curling machine unloads the bar, the rolled piece is coiled into a coil, and then the coil is cooled to room temperature by air; and automatically bundling and weighing the non-twisted rod rolls in a coil finishing area by using a coil finishing system, and conveying the non-twisted rod rolls to a specified position. The method for producing the rare earth sucker rod by the large coiling process can improve the quality of the cut end and the surface and improve the yield and the fixed length rate.
Description
Technical Field
The invention relates to the technical field of metallurgy and steel rolling, in particular to a method for producing a rare earth sucker rod by a large-coil process.
Background
At present, 20CrMoA, 30CrMoA and 25MnVRE series steel type sucker rod round steel is successfully developed by some domestic metallurgical enterprises. The product has been radiated to many petroleum machinery manufacturers. The petroleum machinery manufacturing enterprises give full certainty on the product quality. Still mainly utilize bar rolling production line tissue production now, the product is delivered with straight strip attitude, but rod production sucker rod steel has some problems, mainly shows: poor quality of cut ends, defective surface quality (pitted surface, scratch), low yield, etc. The user requires the sucker rod steel to be completely sized, so that the yield is reduced by about 4 percent, and the problems of end face shearing, a horseshoe opening, a triangular head and the like of a cold shearing machine are caused.
In the past, the punch press is adopted to perform end offline secondary supplementary processing, but the efficiency is low, the manual labor intensity is high, and secondary damage is easily caused to the product quality.
Disclosure of Invention
The invention aims to provide a method for producing a rare earth sucker rod by a large-coil process, and solves the problem.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for producing rare earth sucker rods by a large coiling process, wherein the large coiling process comprises a bar material online temperature control and conveying system, a coiling operation system and a coiling finishing system;
arranging the bar on-line temperature control and conveying system beside a bar cooling bed line after finish rolling, rapidly cooling a rolled piece through a cooling device, curling the rolled piece through a curling machine when the rolled piece is cooled to 500-550 ℃, and performing an automatic tempering process after the rolling;
the curling operation system comprises a shearing machine, an intelligent pinch roll, a looper, a bar feeder and two curling machines; shearing the head and the tail of the bar by a shearing machine at the inlet of a reel type crimping machine, ensuring tension-free crimping and uniform and tidy cloth winding of each layer of bar by using a looper, neatly and consistently winding the bar onto a reel by using a bar feeder to form a bar roll with a perfect appearance, and crimping the bar into a coil by using the crimping machine; the two curling machines work alternately, when one curling machine curls the bar, the other curling machine unloads the coil, the rolled piece is coiled, and then the air cooling is carried out to the room temperature;
and automatically bundling and weighing the non-twisted rod rolls in a coil finishing area by using a coil finishing system, and conveying the non-twisted rod rolls to a specified position.
Further, the crimping machine comprises a rotating reel, a bar head clamping and guiding device for crimping.
Further, the rotating reel includes a tension leg to facilitate unwinding.
Further, the material cooling bed line comprises a set of water cooling tank and a conduit.
Further, the control parameters of the coiling machine are as follows:
compared with the prior art, the invention has the beneficial technical effects that:
by adopting a reel type rod-reel technology, a precedent for producing high-quality, ultra-compact and heavy non-twist round steel and square steel reels is created;
the rod products such as the sucker rod and the like are produced by adopting a large coiling process, and then the products are straightened to supply the products, so that the yield and the product scale rate of the products can be improved, the scale length is cut according to the requirements of users, the end surface cutting quality of the sucker rod is improved, and the economic benefit is obviously improved.
Detailed Description
A method for producing rare earth sucker rods by a large coiling process, wherein the large coiling process comprises a bar material online temperature control and conveying system, a coiling operation system and a coiling finishing system;
arranging a wire rod temperature control and conveying system between an outlet of a water tank after finish rolling and a curling area, wherein the wire rod is positioned beside a rod cooling bed wire and consists of a set of water cooling tank and a guide pipe; a head/tail cutting shear is arranged at the inlet of the reel type crimping machine, the rolled piece is rapidly cooled by a cooling device, and when the rolled piece is cooled to 500-550 ℃, the rolled piece passes through the crimping machine, and the coiled rolled piece can obtain excellent mechanical property uniformity by coiling in the temperature range; the process control temperature can form fine-grained steel, and the steel is curled to carry out an automatic tempering process, so that the rolling stress of the steel can be eliminated, and the further cold processing of the steel is facilitated;
the curling operation system of the curling area comprises a shearing machine, an intelligent pinch roll, a looper, a bar feeder and two curling machines; the looper is used for ensuring tension-free curling and uniform and tidy cloth rolling of each layer of bars, and the bar feeder is used for neatly and consistently rolling the bars onto a winding shaft to form a bar roll with a perfect appearance; two coiling machines work alternately, one of them is used for coiling the bar, the other is used for unloading, each coiling machine is composed of a rotary reel and a bar head clamping and guiding device for coiling, the reel is provided with a tensioning core column so as to facilitate unloading. Rolling the rolled piece into a coil, and then air-cooling to room temperature;
and the coil finishing system in the coil finishing area automatically bundles and weighs the non-twisted rod rolls and then conveys the non-twisted rod rolls to a specified position.
The reel type rod rolling technology is a new technology in the field of rod production, and creates a precedent for producing high-quality, ultra-compact and heavy non-twist round steel and square steel coils. The characteristic non-failure uncoiling characteristic of the coil enables the reel type coil to be directly sent to a downstream process, and the conversion cost is obviously saved. The designed production capacity of the rod and roll production line is 100 tons/hour, the highest speed is 35 m/s, the non-twisted round steel and the water-cooling threaded steel bar with the diameter of 12-52 mm can be produced, and the roll weight is up to 3.5 tons. The method is characterized in that:
① the temperature control parameters of large coil of bar material are different in different specifications, the setting of controlled cooling process parameters such as start rolling temperature, finish rolling speed, curling temperature, etc. needs to accurately control the temperature of the austenite phase transformation interval and the transformation finishing time so as to obtain proper ferrite plus pearlite structure, strength and excellent plasticity index, thus the coil has excellent comprehensive performance.
② the control parameters of the rod winder are related to the product specification and the final rolling speed, the set parameters need to ensure no tension curling and uniform and regular cloth winding for each layer of rods, the product defects such as indentation, scratch and the like are not allowed to be generated in the curling process, and the rod rolls with perfect appearance are formed, the specific set values are shown in table 1.
TABLE 1 Bar crimper control parameters
Meanwhile, 30ppm of rare earth lanthanum is added during smelting production, and the rare earth denatures sharp inclusions into spherical inclusions, thereby being beneficial to the improvement of fatigue performance.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (5)
1. A method for producing rare earth sucker rods by a large-coil process is characterized by comprising the following steps: the large coil technology comprises a bar online temperature control and conveying system, a coiling operation system and a coil finishing system;
arranging the bar on-line temperature control and conveying system beside a bar cooling bed line after finish rolling, rapidly cooling a rolled piece through a cooling device, curling the rolled piece through a curling machine when the rolled piece is cooled to 500-550 ℃, and performing an automatic tempering process after the rolling;
the curling operation system comprises a shearing machine, an intelligent pinch roll, a looper, a bar feeder and two curling machines; shearing the head and the tail of the bar by a shearing machine at the inlet of a reel type crimping machine, ensuring tension-free crimping and uniform and tidy cloth winding of each layer of bar by using a looper, neatly and consistently winding the bar onto a reel by using a bar feeder to form a bar roll with a perfect appearance, and crimping the bar into a coil by using the crimping machine; the two curling machines work alternately, when one curling machine curls the bar, the other curling machine unloads the coil, the rolled piece is coiled, and then the air cooling is carried out to the room temperature;
and automatically bundling and weighing the non-twisted rod rolls in a coil finishing area by using a coil finishing system, and conveying the non-twisted rod rolls to a specified position.
2. The method of claim 1 for producing rare earth sucker rods by the large coil process, which is characterized in that: the crimping machine comprises a rotating reel, a bar head clamping and guiding device for crimping.
3. The method of claim 2 for producing rare earth sucker rods by the large coil process, which is characterized in that: the rotating spool includes a tension leg to facilitate unwinding.
4. The method of claim 1 for producing rare earth sucker rods by the large coil process, which is characterized in that: the material cooling bed line comprises a set of water cooling tank and a conduit.
5. The method of claim 1 for producing rare earth sucker rods by the large coil process, which is characterized in that: the control parameters of the coiling machine are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997602.1A CN111085541A (en) | 2019-10-17 | 2019-10-17 | Method for producing rare earth sucker rod by large-coil process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997602.1A CN111085541A (en) | 2019-10-17 | 2019-10-17 | Method for producing rare earth sucker rod by large-coil process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111085541A true CN111085541A (en) | 2020-05-01 |
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ID=70393014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910997602.1A Pending CN111085541A (en) | 2019-10-17 | 2019-10-17 | Method for producing rare earth sucker rod by large-coil process |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477725A (en) * | 2021-06-03 | 2021-10-08 | 包头钢铁（集团）有限责任公司 | Production method of coiled sucker rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060150384A1 (en) * | 2002-06-28 | 2006-07-13 | Weatherford Canada Partnership | Method of manufacturing continuous sucker rod |
| CN101148012A (en) * | 2007-10-15 | 2008-03-26 | 胜利油田孚瑞特石油装备有限责任公司 | Method for processing hollow sucker rod |
| CN102500618A (en) * | 2011-10-28 | 2012-06-20 | 内蒙古包钢钢联股份有限公司 | Production method for large disc coil of sucker rod |
| CN105980282A (en) * | 2014-02-21 | 2016-09-28 | 首要金属科技奥地利有限责任公司 | Winding machine for wrapping multiple coils of rolled material around a reel |
-
2019
- 2019-10-17 CN CN201910997602.1A patent/CN111085541A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060150384A1 (en) * | 2002-06-28 | 2006-07-13 | Weatherford Canada Partnership | Method of manufacturing continuous sucker rod |
| CN101148012A (en) * | 2007-10-15 | 2008-03-26 | 胜利油田孚瑞特石油装备有限责任公司 | Method for processing hollow sucker rod |
| CN102500618A (en) * | 2011-10-28 | 2012-06-20 | 内蒙古包钢钢联股份有限公司 | Production method for large disc coil of sucker rod |
| CN105980282A (en) * | 2014-02-21 | 2016-09-28 | 首要金属科技奥地利有限责任公司 | Winding machine for wrapping multiple coils of rolled material around a reel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477725A (en) * | 2021-06-03 | 2021-10-08 | 包头钢铁（集团）有限责任公司 | Production method of coiled sucker rod |
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Application publication date: 20200501 |