CN1132706C - Finish rolling process in wire finish-rolling mill - Google Patents
Finish rolling process in wire finish-rolling mill Download PDFInfo
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- CN1132706C CN1132706C CN 00130715 CN00130715A CN1132706C CN 1132706 C CN1132706 C CN 1132706C CN 00130715 CN00130715 CN 00130715 CN 00130715 A CN00130715 A CN 00130715A CN 1132706 C CN1132706 C CN 1132706C
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- collars
- finished product
- oval
- oval groove
- finishing mill
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Abstract
The present invention relates to a finish rolling technical method for a wire material finish rolling mill. In the technical method, a roll collar pass system with the alternation of elliptical passes and round passes in the prior art is changed into a roll collar pass system with the alternation of flat oval passes and off-round passes which are finally processed into round passes of finished products. The technical method has the advantages of diversify of production specifications, simplified adjustment of the rolling mill, reduced consumption of finish rolling collars, greatly increased effective repeating utilization rate of roll collars of the finish rolling mill, reduced consumption of steel of the roll collars by about 60%, reduced grinding workload of the roll collars, and improved product quality. Finished products realize smooth transition in roll gaps, the appearance and the size of the finished products are obviously improved, and the physical properties of the products are also enhanced.
Description
The present invention relates to a kind of metal rolled technology, be specially the finish-rolling process method that is used in wire finishing mill.
The production technology of the current high-speed wire rolling that adopts on finishing mill adopts ellipse-circle pass schedule alternately, and promptly its pass schedule replaces layout by oval groove and circular hole and forms, and shuts out finished product by the circular hole of two sorties.Though this pass schedule is through using and improving for many years, its technological parameter improves substantially, but owing to be subjected to the restriction of pass schedule self-characteristic, there is following point in it: 1, owing to can only shut out finished product by the circular hole of two sorties, range of product size is little, fully refinement of product specification; 2, to shut out the outer wire rod of specification limit, need by changing or adjusting the supplied materials size and realize, so to supplied materials dimensional requirement harshness, it is frequent that leader pass system complex, pass are changed; 3, the finish rolling collars can not be fully used, and reusable number of times is few, and the collars consumption is big, causes the loss per ton steel height of collars; 4, because the finishing mill collar diameter variation makes finishing mill bosom road defective material shape size and tension force situation wayward, and especially the existence of circular hole makes the adjustment complexity of milling train, influence is produced and end properties; 5, in ellipse-circular hole system, the percentage elongation of the wire rod between each sortie of finishing mill is inequality, and the rotating speed of the roll of each sortie increases progressively with non-geometric ratio, adopts under the situation of collective's transmission the transmission mechanism complexity of complete machine at each sortie of finishing mill.
Purpose of the present invention for provide a kind of can refinement product specification, reduce collars consumption, simplify the process of the finishing wire that the rotating speed of finishing mill adjusts.
The present invention adopts following measure to realize: this process adopts flat oval-off-round pass alternately, the collars pass schedule that adds the end product circular hole again, the shape of each oval groove is identical, and the reduction of area between each oval groove is identical, and the diameter of finished product collars is determined with following formula: D
Finished product=BD
Ellipse Circleλ
Finished product/ λ, wherein D
Finished productBe the diameter of finished product collars, D
OvalDiameter for the collars of oval groove, B is a tension parameters, and it can require to select in the 0.95-1.05 scope according to the difference that parts power in the finishing mill a little, and λ is the percentage elongation between oval groove, it can select λ according to the performance of the material of the major product of being produced between 1.2-1.4
Finished productBe the percentage elongation between oval groove and finished product circular hole, it is the parameter relevant with λ, can determine by following formula: λ
Finished product=K √ λ, wherein K is a tension adjustment parameter of considering the advancing slip value of finished product, it can be selected between 0.9-1.1.After the diameter of finished product collars was determined with above-mentioned formula, its diameter reduced, to adapt to the speeds match problem after oval groove diminishes to percentage elongation between circular hole; After the diameter of oval groove collars and finished product collars is determined, its numerical value can only change in≤2% scope, and roll rotational speed increases progressively to increase progressively ratio X=C λ between frame, wherein, C is that speed is adjusted parameter, selects between 0.95-1.05 according to the tension force requirement of finishing mill inside.After process of the present invention adopted above-mentioned pass schedule, the wire rod percentage elongation between each sortie was identical, and the rotating speed of the roll of each sortie can adopt geometric ratio to increase progressively, and can make corresponding speed adjusting gear obtain simplifying.
The present invention passes through the change to the pass schedule of existing finishing mill, provided a kind of new process of finishing wire, this process produces following effect: 1, product specification variation: the present invention makes finishing mill realize that single, double machine all can be used as finished frame, reaches the process goal of refinement specification and multi-sizeization; 2, the milling train adjustment is oversimplified: the present invention makes finishing mill pony-roughing pass collars diameter and final pass collars diameter constant all the time, cancelled the circular hole restriction of pony-roughing pass simultaneously, made control, adjustment and the milling train inside of the rotating speed of finishing mill roll expect that shape is adjusted, the realization of the control of tension force is simpler; 3, the consumption of finish rolling collars reduces: current oval groove collars is after wearing and tearing are repaired, the bigger pass that can be used as adjacent last sortie, must not resemble under the existing process conditions and change the collars diameter, the oval groove collars is after maximum oval groove wearing and tearing, with wire-electrode cutting device collars is cut into the less finished product collars in roller footpath, fluting uses, after the wearing and tearing of finished product collars are repaired, current specification pass can be processed into the bigger adjacent-specification finished product collars of pass, effective recycling rate of waterused of finishing mill collar is improved greatly, make the loss per ton steel of collars reduce about 60%; 4, collars grinding workload reduces: under the process conditions of the present invention, can exempt the reconditioning work of collars cylindrical, the fluting of collars and pass repair are greatly simplified; 5, the raising of product quality: under the process conditions of the present invention, make finished product slick and sly more in the transition at roll gap place, its profile and size be improved significantly; Avoided existing finishing mill circular hole interim orbit defective material shape because of adjusting the improper generation ears or side handles of a utensil, the folding phenomenon on finished product, occurred, thereby improved the physical property of product.
Accompanying drawing 1 is the pass schedule schematic diagram of existing process;
Accompanying drawing 2 is the pass schedule schematic diagram of process of the present invention;
Accompanying drawing 3 is the structural representation of indicatrix ellipse pass of the present invention;
Below process of the present invention is further described and be given in concrete application example on the finishing mill: this process adopts flat oval-off-round pass alternately, the collars pass schedule that adds the end product circular hole again, the shape of each oval groove is identical, reduction of area between each oval groove is identical, and the diameter of finished product collars is determined with following formula: D
Finished product=BD
Ovalλ
Finished product/ λ, wherein D
Finished productBe the diameter of finished product collars, D
OvalDiameter for the collars of oval groove, B is a tension parameters, and it can require to select in the 0.95-1.05 scope according to the difference that parts power in the finishing mill a little, and λ is the percentage elongation between oval groove, it can select λ according to the performance of the material of the major product of being produced between 1.2-1.4
Finished productBe the percentage elongation between oval groove and finished product circular hole, it is the parameter relevant with λ, can determine by following formula: λ
Finished product=K √ λ, wherein K is a tension adjustment parameter of considering the advancing slip value of finished product, it can be selected between 0.9-1.1; After the diameter of oval groove collars and finished product collars is determined, its numerical value can only change in≤2% scope, and roll rotational speed increases progressively to increase progressively ratio X=C λ between frame, wherein, C is that speed is adjusted parameter, selects between 0.95-1.05 according to the tension force requirement of finishing mill inside.For further improving the quality of product, the present invention changes above-mentioned oval groove into the indicatrix ellipse pass, the indicatrix ellipse pass is made up of the inscribe circular arc of rhombus and rhombus both sides, the radius of inscribe circular arc is the radius of a circle that equates with the rhombus area, like this, the transitional radius and the finished product of leader pass are close, thereby make finished product slick and sly more in the transition at roll gap place, its profile and size be improved significantly.In actual design, the ratio of the short major axis of rhombus is the parameter relevant with percentage elongation, can determine according to the performance of the material of determined percentage elongation and major product in the design.
Use the finishing mill of process of the present invention to adopt 10 sorties, collective's transmission, roll rotational speed increases progressively to increase progressively ratio X=C λ between frame, and wherein, C is that speed is adjusted parameter, selects between 0.9-1.05 according to the tension force requirement of finishing mill inside.Pass schedule on the collars is that 1 to 9 sortie adopts flat oval-upright oval pass that replaces, and the collars on 10 sorties adopts the finished product circular hole, after oval collars diameter is determined, according to formula: D
Finished product=BD
Ovalλ
Finished product/ λ, D
OvalCan select by the general diameter of collars under the existing process conditions, selected relevant parameters can be determined the diameter of finished product collars.After having determined the 10th minimal product specification of being produced, the product cross-sectional area multiply by λ
Finished productObtain minimum ellipse pass area (i.e. the collars oval groove area of the 9th sortie), the shape of this oval groove can be determined by the shape of the oval groove on the finishing mill under the existing process conditions; Multiply by the area that percentage elongation λ obtains each oval groove of front successively more respectively.In the use according to the difference of required trimmed size, finished product collars with respective aperture profile shrinkage can place on the corresponding sortie in front, as the 9th, on the sortie such as 8......, be used to the finished product of different size, needn't resemble in the existing technology and can only go out finished product, make the multi-sizeization of product by the circular hole of two sorties; The area of current finished product circular hole multiply by percentage elongation for the area of back one sortie finished product circular hole.Current oval groove collars is after wearing and tearing are repaired, the bigger pass that can be used as adjacent last sortie, be used for the 8th after wearing and tearing are repaired as the collars on the 9th, be used for the 7th after the wearing and tearing reparation on the 8th ..., after the collars wearing and tearing on the 1st, with wire-electrode cutting device or other way collars is cut into the less finished product collars in roller footpath, fluting uses, the finished product collars that is used for minimum gauge, after the wearing and tearing of finished product collars are repaired, current specification pass can be processed into the collars of the last groove of the bigger adjacent-specification of pass, effective recycling rate of waterused of finishing mill collar is improved greatly.
Claims (2)
1, a kind of finish-rolling process method of wire finishing mill, it is characterized by: this process adopts flat oval-off-round pass alternately, the collars pass schedule that adds the end product circular hole again, the shape of each oval groove is identical, reduction of area between each oval groove is identical, and the diameter of finished product collars is determined with following formula: D
Finished product=BD
Ovalλ
Finished product/ λ, wherein D
Finished productBe the diameter of finished product collars, D
OvalDiameter for the collars of oval groove, B is a tension parameters, and it can require to select in the scope of 0.95-1.05 according to the difference that parts power in the finishing mill a little, and λ is the percentage elongation between oval groove, it can select λ according to the performance of the material of the major product of being produced between 1.2-1.4
Finished productBe the percentage elongation between oval groove and finished product circular hole, it is the parameter relevant with λ, can determine by following formula: λ
Finished product=K √ λ, wherein K is a tension adjustment parameter of considering the advancing slip value of finished product, it can be selected between 0.9-1.1, after the diameter of oval groove collars and finished product collars is determined, its numerical value can only change in≤2% scope, and roll rotational speed increases progressively to increase progressively ratio X=C λ between frame, wherein, C is that speed is adjusted parameter, selects between 0.95-1.05 according to the tension force requirement of finishing mill inside.
2, the finish-rolling process method of wire finishing mill as claimed in claim 1, it is characterized by: above-mentioned oval groove adopts the indicatrix ellipse pass, the indicatrix ellipse pass is made up of the inscribe circular arc at rhombus and rhombus two ends, and the radius of inscribe circular arc is the radius of a circle that equates with the rhombus area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00130715 CN1132706C (en) | 2000-10-11 | 2000-10-11 | Finish rolling process in wire finish-rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00130715 CN1132706C (en) | 2000-10-11 | 2000-10-11 | Finish rolling process in wire finish-rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1347769A CN1347769A (en) | 2002-05-08 |
| CN1132706C true CN1132706C (en) | 2003-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00130715 Expired - Fee Related CN1132706C (en) | 2000-10-11 | 2000-10-11 | Finish rolling process in wire finish-rolling mill |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3968435B2 (en) * | 2003-05-20 | 2007-08-29 | 独立行政法人物質・材料研究機構 | Large strain introduction processing method and caliber rolling equipment |
| ITMI20041897A1 (en) * | 2004-10-06 | 2005-01-06 | Vai Pomini Srl | "EQUIPMENT AND METHOD FOR THE REDUCTION OF SECTION AND CALIBRATION OF MILL PRODUCTS FOR VERGELLA" |
| CN100537066C (en) * | 2007-09-28 | 2009-09-09 | 江苏沙钢集团有限公司 | Improved technique for morgan phi 7mm hole type system |
| CN101612632B (en) * | 2009-06-23 | 2011-04-13 | 武汉钢铁(集团)公司 | Method for enhancing dimensional accuracy and surface quality of bearing steel wire rod |
| CN103028600A (en) * | 2012-12-26 | 2013-04-10 | 广东韶钢松山股份有限公司 | Using method of bar roller |
| CN103286126B (en) * | 2013-06-08 | 2015-10-07 | 中冶赛迪工程技术股份有限公司 | The rolling mill practice of the few frame final shaping unit unit of high-speed rod combined type |
| CN104117536B (en) * | 2014-06-24 | 2015-10-28 | 武钢集团昆明钢铁股份有限公司 | A kind of φ 6.5 light circle and φ 6 valve snail hot-rolled reinforced bar finishing groove share production method |
| CN109396180B (en) * | 2018-10-29 | 2020-09-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of SD420W bamboo joint reinforcing steel bar |
| CN112296085A (en) * | 2020-08-14 | 2021-02-02 | 陕钢集团汉中钢铁有限责任公司 | Rough rolling type system for rolling 165 square billets |
| CN113857238B (en) * | 2021-08-13 | 2023-03-31 | 日照钢铁控股集团有限公司 | Rolling method of 12 mm-specification wire rod |
| CN114226450B (en) * | 2021-11-30 | 2024-05-10 | 首钢集团有限公司 | Rolling mill and metal composite rolling method |
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- 2000-10-11 CN CN 00130715 patent/CN1132706C/en not_active Expired - Fee Related
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| CN1347769A (en) | 2002-05-08 |
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