CN103286130A - Hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material and semi-tandem rolling technology of using hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material - Google Patents
Hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material and semi-tandem rolling technology of using hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material Download PDFInfo
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Abstract
The invention discloses a set of hyperpure alloy wire or semi-tandem rolling wing-shaped holes for a bar material. The hyperpure alloy wire or semi-tandem rolling wing-shaped holes for the bar material comprises 1-7 wing-shaped holes of a roughing mill, 8-13 wing-shaped holes of an intermediate mill and 14-19 wing-shaped holes of a finishing mill. In addition, the invention further discloses a technology for carrying out the semi-tandem rolling by adopting the hyperpure alloy wire or the semi-tandem rolling wing-shaped holes for the bar material. Compared with the prior art, the technology provided by the invention can produce high quality heat-resisting alloy 40Cr25Ni35W2Nb2MnSi, corrosion resistant alloy Cr16Mo16W4Fe6Ni, and hot rolled wire rod, and the qualification rate is 98 percent. After surface inspection, the defects of crack, folding, cicatrization and scratch do not exist, the requirements of GB/T15008-2008 are met, and the regulations specified by GB/T14981-2009 to size, appearance and allowable deviation are met.
Description
Technical field
The invention belongs to iron and steel industry high alloy material manufacture field, specifically, the semi-tandem rolling that the present invention relates to a kind of ultra pure alloy line or bar is with processing component and use its semi-tandem rolling technology.
Background technology
The ultra pure alloy classification mainly contains ultrapure electrothermal alloy, ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy, ultrapure Precise Alloy four big classes.Be characterized in that 1. hot processing temperature narrow range (1050～1150 ℃) has only about 100 ℃.2. each trade mark alloy spread coefficient difference is big; 3. thermal processing distortion drag big (1100 ℃ time, intensity is 120mpa).
At present, domestic high-quality steel wire, rod hot rolling production line are produced carbon junction steel more, are closed knot steel, bearing steel, mould steel, stainless steel and alloy part etc.Its equipment is all common apparatus, can't adapt to the ultra pure alloy These characteristics.Therefore, in the operation of rolling following situation can appear:
1. in the operation of rolling, temperature descends very fast, and rolling after several, temperature is down to below 1000 ℃, if further rolling, then causes rolled piece fracture or equipment breakdown.Even can melt down intensification, also can cause beyond thought product quality problem.
2. the pass design can not adapt to the big characteristics of spread coefficient difference, and namely pass has satisfied these trade mark alloy deformation needs, does not satisfy the requirement of other trade mark alloy, therefore, can only be equipped with the roll of different passes more, and this is impossible in big production.
3. in addition, high alloy hot rolling deformation drag is all bigger, requires the mill stiffness height, and bouncing value is little, and driving force is strong.
In view of the foregoing, China does not also produce heat-resisting alloy, the wire rod of corrosion resistant alloy etc., bar at present.And electrothermal alloy, Precise Alloy wire rod, bar production specification are incomplete, poor product quality, and production efficiency is low, and the cost height can not satisfy industrial production, the requirement of social life.Also can't satisfy the constantly requirement of development of production technology.Therefore, provide a kind of cost low, the efficient height, the measured ultra pure alloy line of material of matter, bar production equipment and process are to solving the ultrapure heat-resisting alloy of user, ultrapure corrosion resistant alloy line, bar product, solve electrothermal alloy, Precise Alloy line, bar product specification are incomplete, poor product quality, production efficiency is low, and problems such as cost height are very important.
Summary of the invention
In order to address the above problem, the semi-tandem rolling that the invention provides a kind of ultra pure alloy line or bar is used wing type hole, this semi-tandem rolling can be forging stock with wing type hole and is shared by four class ultra pure alloy ￠ 6-10mm wire rods or the ￠ 15-30mm bar of ￠ 65mm, and it is the pass of ￠ 100m m that the pipe of ￠ 60-80mm then adopts another set of forging stock.In addition, the present invention also provides a kind of method of using this semi-tandem rolling to use wing type hole semi-tandem rolling ultra pure alloy wire rod or bar.
To achieve these goals, the present invention has adopted following technical scheme:
The semi-tandem rolling of one cover ultra pure alloy line or bar is used wing type hole, comprise wing shape hole, roughing mill 1-7 road, middle wing shape hole, milling train 8-13 road and wing shape hole, finishing mill 14-19 road, wherein, the pass side of the being-ellipse-circle-ellipse-circle-ellipse-circular hole in the wing shape hole, 1-7 road of roughing mill; The pass in the wing shape hole, 8-13 road of middle milling train is oval-circle-oval-circle-ellipse-circle; And the pass in the wing shape hole, 14-19 road of finishing mill is oval-circle-oval-circle-oval-circle, and wherein, the diameter in hole, the 7th road is Φ 27mm, and the diameter in hole, the 13rd road is Φ 12mm, and the diameter in hole, the 19th road is Φ 6mm.
Wherein, be ￠ 100mm at the forging stock diameter, the pass size in wing shape hole replaces with the size that can process ￠ 60-80mm pipe.
Wherein, ultra pure alloy is ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy or ultrapure Precise Alloy, and preferably, heat-resisting alloy is 40Cr25Ni35W2Nb2MnSi; Corrosion resistant alloy is that Cr16Mo16W4Fe6Ni is surplus.
A kind of semi-tandem rolling that utilizes above-mentioned ultra pure alloy line or bar carries out the technology of semi-tandem rolling with wing type hole, may further comprise the steps:
Will
The forging stock of 65mm heats through continuous furnace, and the tapping temperature that makes forging stock is 1160 ℃;
Forging stock is sent into the first road square opening of thick blooming mill automatically through the roughing mill front roller-way by furnace delivery table, roughing mill is wing shape hole, 7 road, i.e. side-ellipse-circle-ellipse-circle-ellipse-circular hole, be rolled into the rolled piece that diameter is ￠ 27mm through wing shape hole, 7 road, feeding steel for turning over the steel casement door roller-way automatically before the roughing, is that double-deck roller-way is fed steel automatically behind the roughing mill;
￠ 27mm rolled piece after roughing mill is rolling enters online heat patching device through roller-way, speed with 0.5-1m/s heats while walking, make the head temperature of rolled piece reach 1150 ℃, the wing shape hole, the 8th road of milling train in the flying shear crop enters, 6 road passes of middle milling train are followed successively by ellipse-circle-ellipse-circle-ellipse-circle, be rolled into ￠ 12mm through wing shape hole, the 13rd road, by 2# flying shear crop, enter the wing shape hole, the 14th road of the finishing mill of horizontally and vertically alternative, 6 road passes of finishing mill are followed successively by ellipse-circle-ellipse-circle-ellipse-circle, be rolled into the rolled piece of ￠ 6mm through wing shape hole, the 19th road, rolled piece coils into ￠ 850mm wire rod and quenching through Laying head again.
Wherein, will
The forging stock of 65mm through the step of continuous furnace heating be with
The forging stock of the 65 * 1200mm flat flame continuous furnace of 12m stepping-bottom-type combustion gas of packing into is controlled automatically by the heating curves of setting.
Wherein, ultra pure alloy is ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy or ultrapure Precise Alloy, and preferably, heat-resisting alloy is 40Cr25Ni35W2Nb2MnSi; Corrosion resistant alloy is that Cr16Mo 16W4Fe6Ni is surplus.
The purposes in a kind of above-mentioned wing shape hole, this wing shape hole are applicable to that with forging stock be the bar that the ultra pure alloy of ￠ 65m m is processed into ￠ 6-10mm wire rod or ￠ 15-30mm.
The purposes in a kind of above-mentioned wing shape hole, this wing shape hole are applicable to that with the forging stock diameter be the pipe that the ultra pure alloy of ￠ 100mm is processed into ￠ 60-80mm.
Wherein, ultra pure alloy is ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy or ultrapure Precise Alloy, and preferably, heat-resisting alloy is 40Cr25Ni35W2Nb2MnSi; Corrosion resistant alloy is that Cr16Mo16W4Fe6Ni is surplus.
Compared with prior art, method of the present invention can be produced high-quality heat-resisting alloy 40Cr25Ni35W2Nb2MnSi, and corrosion resistant alloy Cr16Mo16W4Fe6Ni waste heat rolls wire rod, and wherein qualification rate is 98%.Through surface inspection, flawless, fold, scab, defective such as cut, meet the GB/T15008-2008 requirement.And size, profile and permissible variation meet the GB/T14981-2009 regulation.
Description of drawings
Fig. 1 is the pass structure schematic diagram that the semi-tandem rolling of ultra pure alloy line of the present invention or bar is used wing type hole.
Fig. 2 is the circular port of prior art and the contrast schematic diagram in slotted eye and wing shape of the present invention hole;
The specific embodiment
Be elaborated with the pass in wing type hole and the technology of using this pass to carry out semi-tandem rolling below in conjunction with the semi-tandem rolling of accompanying drawing to ultra pure alloy line of the present invention or bar; drawings and Examples only are illustrative purposes, are not intended to limit protection scope of the present invention.
As shown in Figure 1, the present invention mainly adopts ellipse-circular hole system, (for deformation of rolled wire needs) all the other 18 passages are ellipse except first road is square groove---circular hole, be characterized in that deformation ratio is more even, and rolled piece do not have corner angle substantially, and temperature is more even, and temperature stress is less, in order to avoid crack the thermal processing distortion characteristics of relatively more suitable ultra pure alloy.Fig. 2 has further contrasted circle and oval and circle of the present invention and the ellipse of prior art, wing shape pass of the present invention is different with general pass, this pass is to be in particular the bigger alloy rolling of absolute spread difference and to design, its adaptive capacity is strong, can satisfy the deformation requirements of various trade mark alloys.Wherein, the diameter of the 1st road square opening is 65mm, and the diameter in wing shape hole, the 7th road is ￠ 27mm, and the diameter in wing shape hole, the 13rd road is ￠ 12mm, and the diameter in wing shape hole, the 19th road is ￠ 6mm.Just because of this cover pass, just can be forging stock is shared by diameter ￠ 6-10mm wire rod or the ￠ 15-30mm bar of the aforementioned four class ultra pure alloy of ￠ 65m m, and when making ￠ 60-80mm pipe, above-mentioned pass can be the size of the forging stock adjustment pass of ￠ 100mm according to diameter.
Pass schedule of the present invention and major parameter thereof are shown in table 1:
Wing shape pass by ellipse of the present invention-circle can reduce rolling defect and improve the quality of products, and reduces pass design, Roller Machining, the trouble of roll change repeatedly, has liberated productivity greatly.
Semi-tandem rolling technology to ultra pure alloy line of the present invention or bar is elaborated by the following examples.
Embodiment one
1. material and specification quantity
Heat-resisting alloy 40Cr25Ni35W2Nb2MnSi, forging stock
65X1200mm 1.1t
2. the technological process of production:
With forging stock
The 65X1200mm flat flame continuous furnace of 12m stepping-bottom-type combustion gas of packing into.Automatically control by the heating curves of setting, tapping temperature is 1160 ℃.Then send into thick blooming mill first road through the roughing mill front roller-way automatically by furnace delivery table.Blooming mill is the side of our invention, and------------circle---ellipse---circular hole is rolled into ￠ 27mm through 7 roads to ellipse to circle to ellipse.Feeding steel for turning over the steel casement door roller-way automatically before the roughing, is that double-deck roller-way is fed steel automatically behind the roughing mill.
￠ 27mm rolled piece from roughing mill is less than 1000 ℃, enter conventional online heat patching device through roller-way, speed with 1m/s heats while walking, about 8 second the occiput temperature reached 1150 ℃, roll first of tandem rolling unit in entering through flying shear and head, 6 passes of middle milling train be oval---circle---and ellipse---circle---ellipse---circle, 6 roads of 6 passes of milling train are rolled into ￠ 12mm in the warp, through 2# flying shear crop, enter horizontally and vertically alternative finish rolling tandem rolling unit.Finish rolling also is 6, the ellipse that pass is also invented for us, and---------circle---ellipse---circle, 6 roads are rolled into ￠ 6mm to ellipse to circle.Coil into ￠ 850mm wire rod, hardening finally by Laying head.
3. check: qualification rate 97.7%
Surface quality: artificial visual inspection meets the GB/T15008-2008 requirement;
Size, profile and permissible variation: kind of calliper meets the GB/T14981-2009 requirement;
Mechanical property: tension test meets the GB/T15008-2008 regulation.
Embodiment two
1. blank and specification quantity
Corrosion resistant alloy Cr16Mo16W2Fe6Ni is surplus, forging stock
65X1200mm 1.0t
2. the technological process of production: with embodiment one;
3. check: qualification rate 98.4%;
Surface quality, size, profile and permissible variation, mechanical property is with embodiment one.
Although above the specific embodiment of the present invention has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned embodiment according to conception of the present invention and change and modification; when its function that produces does not exceed spiritual that specification and accompanying drawing contain yet, all should be within protection scope of the present invention.
Claims (10)
1. the semi-tandem rolling of a cover ultra pure alloy line or bar is used wing type hole, comprise wing shape hole, roughing mill 1-7 road, middle wing shape hole, milling train 8-13 road and wing shape hole, finishing mill 14-19 road, wherein, the pass side of the being-ellipse-circle-ellipse-circle-ellipse-circular hole in the wing shape hole, 1-7 road of roughing mill; The pass in the wing shape hole, 8-13 road of middle milling train is oval-circle-oval-circle-ellipse-circle; And the pass in the wing shape hole, 14-19 road of finishing mill is oval-circle-oval-circle-oval-circle, and wherein, the diameter in hole, the 7th road is Φ 27mm, and the diameter in hole, the 13rd road is Φ 12mm, and the diameter in hole, the 19th road is Φ 6mm.
2. the semi-tandem rolling of ultra pure alloy line as claimed in claim 1 or bar wherein, is ￠ 100mm at the forging stock diameter with wing type hole, and the pass size in wing shape hole replaces with the size that can process ￠ 60-80mm pipe.
3. the semi-tandem rolling of ultra pure alloy line as claimed in claim 1 or bar is used wing type hole, and wherein, ultra pure alloy is ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy or ultrapure Precise Alloy and electrothermal alloy.
4. the semi-tandem rolling of ultra pure alloy line as claimed in claim 3 or bar is used wing type hole, and wherein, heat-resisting alloy is 40Cr25Ni35W2Nb2MnSi; Corrosion resistant alloy is that Cr16Mo16W4Fe6Ni is surplus.
5. a semi-tandem rolling that utilizes claim 1, each described ultra pure alloy line of 3-4 or bar carries out the technology of semi-tandem rolling with wing type hole, may further comprise the steps:
The forging stock of ￠ 65mm is heated through continuous furnace, and the tapping temperature that makes forging stock is 1160 ℃;
Forging stock is sent into the first road square opening of thick blooming mill automatically through the roughing mill front roller-way by furnace delivery table, roughing mill is wing shape hole, 7 road, i.e. side-ellipse-circle-ellipse-circle-ellipse-circular hole, be rolled into the rolled piece that diameter is ￠ 27mm through wing shape hole, 7 road, feeding steel for turning over the steel casement door roller-way automatically before the roughing, is that double-deck roller-way is fed steel automatically behind the roughing mill;
￠ 27mm rolled piece after roughing mill is rolling enters online heat patching device through roller-way, speed with 0.5-1m/s heats while walking, make the head temperature of rolled piece reach 1150 ℃, the wing shape hole, the 8th road of milling train in the flying shear crop enters, 6 road passes of middle milling train are followed successively by ellipse-circle-ellipse-circle-ellipse-circle, be rolled into ￠ 12mm through wing shape hole, the 13rd road, by 2# flying shear crop, enter the wing shape hole, the 14th road of the finishing mill of horizontally and vertically alternative, 6 road passes of finishing mill are followed successively by ellipse-circle-ellipse-circle-ellipse-circle, be rolled into the rolled piece of ￠ 6mm through wing shape hole, the 19th road, rolled piece coils into ￠ 850mm wire rod and quenching through Laying head again.
6. the technology of semi-tandem rolling as claimed in claim 5 wherein, is with the forging stock of the ￠ 65 * 1200mm flat flame continuous furnace of 12m stepping-bottom-type combustion gas of packing into the forging stock of ￠ 65mm through the step of continuous furnace heating, controls automatically by the heating curves of setting.
7. as the technology of claim 5 or 6 described semi-tandem rollings, wherein, ultra pure alloy is ultrapure heat-resisting alloy, ultrapure corrosion resistant alloy or ultrapure Precise Alloy and electrothermal alloy.
8. the purposes in a claim 1, each described wing shape hole of 3-4, this wing shape hole are applicable to that with forging stock be the bar that the ultra pure alloy of ￠ 65mm is processed into ￠ 6-10mm wire rod or ￠ 15-30mm.
9. the purposes in the described wing shape of claim 2 hole, this wing shape hole are applicable to that with the forging stock diameter be the pipe that the ultra pure alloy of ￠ 100mm is processed into ￠ 60-80mm.
10. purposes as claimed in claim 8 or 9, wherein, heat-resisting alloy is 40Cr25Ni35W2Nb2MnSi; Corrosion resistant alloy is that Cr16Mo16W4Fe6Ni is surplus.
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| CN201210052205.5A CN103286130B (en) | 2012-03-01 | 2012-03-01 | Hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material and semi-tandem rolling technology of using hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706631A (en) * | 2013-12-31 | 2014-04-09 | 常州中钢精密锻材有限公司 | Novel rolling process of nickel-based alloy bar materials |
| CN104001717A (en) * | 2014-05-26 | 2014-08-27 | 张家港浦项不锈钢有限公司 | Manufacturing technique of rolled steels |
| CN105750328A (en) * | 2016-04-06 | 2016-07-13 | 西安赛特思迈钛业有限公司 | Method for continuously rolling and machining titanium and titanium alloy bars with small specifications |
| CN106140818A (en) * | 2016-08-31 | 2016-11-23 | 云南德胜钢铁有限公司 | Design of section of rolling mill in bar |
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| CN1214967A (en) * | 1998-11-23 | 1999-04-28 | 方崇实 | High-alloy wire and rod material production technology flow and mill train |
| JP2000246301A (en) * | 1999-02-26 | 2000-09-12 | Natl Res Inst For Metals | Method of manufacturing p-added low-carbon steel of high strength and high toughness |
| CN101306431A (en) * | 2008-06-10 | 2008-11-19 | 江苏沙钢集团淮钢特钢有限公司 | Rolling method of large size round steel |
| CN102039307A (en) * | 2009-10-16 | 2011-05-04 | 宝山钢铁股份有限公司 | Method for rolling square steel |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214967A (en) * | 1998-11-23 | 1999-04-28 | 方崇实 | High-alloy wire and rod material production technology flow and mill train |
| JP2000246301A (en) * | 1999-02-26 | 2000-09-12 | Natl Res Inst For Metals | Method of manufacturing p-added low-carbon steel of high strength and high toughness |
| CN101306431A (en) * | 2008-06-10 | 2008-11-19 | 江苏沙钢集团淮钢特钢有限公司 | Rolling method of large size round steel |
| CN102039307A (en) * | 2009-10-16 | 2011-05-04 | 宝山钢铁股份有限公司 | Method for rolling square steel |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706631A (en) * | 2013-12-31 | 2014-04-09 | 常州中钢精密锻材有限公司 | Novel rolling process of nickel-based alloy bar materials |
| CN104001717A (en) * | 2014-05-26 | 2014-08-27 | 张家港浦项不锈钢有限公司 | Manufacturing technique of rolled steels |
| CN104001717B (en) * | 2014-05-26 | 2017-12-15 | 张家港浦项不锈钢有限公司 | The manufacturing process of steel rolling |
| CN105750328A (en) * | 2016-04-06 | 2016-07-13 | 西安赛特思迈钛业有限公司 | Method for continuously rolling and machining titanium and titanium alloy bars with small specifications |
| CN106140818A (en) * | 2016-08-31 | 2016-11-23 | 云南德胜钢铁有限公司 | Design of section of rolling mill in bar |
| CN106140818B (en) * | 2016-08-31 | 2018-09-18 | 云南德胜钢铁有限公司 | Design of section of rolling mill in bar |
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