CN102031469A - Method for heating large titanium and titanium alloy slabs - Google Patents
Method for heating large titanium and titanium alloy slabs Download PDFInfo
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- CN102031469A CN102031469A CN 201010607954 CN201010607954A CN102031469A CN 102031469 A CN102031469 A CN 102031469A CN 201010607954 CN201010607954 CN 201010607954 CN 201010607954 A CN201010607954 A CN 201010607954A CN 102031469 A CN102031469 A CN 102031469A
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Abstract
The invention discloses a method for heating large titanium and titanium alloy slabs. The method comprises the following steps of: allocating and transporting a composite base plate to a furnace door of a pusher-type heating furnace, arranging angle iron on the composite base plate, and arranging the titanium slabs on the angle iron, wherein the composite base plate is a composite plate compounded by a carbon steel plate serving as a middle base material and stainless steel plates serving as upper and lower sheathing materials through explosion; and pushing the composite base plate and the titanium slabs together into the pusher-type heating furnace by using a pusher, heating, and separating. The stainless steel-carbon steel-stainless steel composite base plate is used as a base plate for heating the titanium slabs to effectively prevent scratches on the surfaces of the slabs in the heating process; the angle iron prevents the slabs from directly contacting the base plate so as not to cause nonuniform heating of the slabs; and the service life of the base plate is not shortened and the manufacturing cost of the base plate is greatly reduced.
Description
Technical field
The invention belongs to the titanium or titanium alloy processing technique field, particularly a kind of heating means of the titanium or titanium alloy Large Titanium slab based on pusher-type furnace.
Background technology
Titanium or titanium alloy is because of its specific tenacity height, excellent anti-corrosion performance, and good biocompatibility is widely used in industries such as aerospace, petrochemical complex, pharmacy, salt manufacturing, metallurgy and medical treatment, is described as all-round metal.The application prospect of titanium or titanium alloy sheet material is boundless, and trend is good.Along with the development of domestic and international air system, the consumption of titanium or titanium alloy on large transport airplane constantly enlarges, and the demand of especially big specification titanium sheet material is also growing.Therefore, the research and development and the application work of big specification titanium sheet material heat processing technique are increasingly important, and the heating means of Large Titanium slab are the prerequisites of its thermal processing distortion technology, also are the necessary operations of producing titanium sheet material.
At present, the type of heating of titanium or titanium alloy slab has following several:
1) adopt the heating of cell-type process furnace, the cell-type process furnace is divided into electrical heater and gas furnace heating again.Wherein the Electric heating furnace atmosphere is controlled, and temperature homogeneity is good, and is of reduced contamination, but rate of heating is slower, and production efficiency is low; The coal gas type of heating, the bad control of furnace atmosphere, rate of heating is fast, and temperature homogeneity is relatively poor, and is seriously polluted.
2) induction heater heating, its pollution level is little, and rate of heating is fast, but poor temperature uniformity.
3) continous way gas heating furnace heating, continuous furnace is divided into walking beam furnace and pusher-type furnace again.The extraordinary smelter of the minority that possesses ferrous metal and non-ferrous metal production and deposit, the light section blank forges into ingot casting in general elder generation, adopt process furnace to carry out blank heating then, process furnace generally adopts the medium pusher-type furnace of capacity, rather than the bigger walking beam furnace of capacity.The weak point of these heating means is:
A, for the slab of specification greater than process furnace two water beam spacings, the slab face that contacts with two load-bearing water beam slide rails in the pusher-type furnace easily is scratched, scuffing during heating on the slab is easy to carry in follow-up hot-work, and, must carry out bigger polishing amount to this scuffing face and could remove this defective according to the complete processing requirement of titanium or titanium alloy.For expensive titanium or titanium alloy, bigger polishing amount must make its lumber recovery reduce.
B, for the slab of specification less than process furnace two water beam spacings, if when adopting this kind type of heating heating slab, must under slab, add charging tray.It is reported that the material of charging tray is generally cheap cast iron or expensive high temperature steel Co20.The cast iron charging tray is not wear-resisting, thermo-labile, and is yielding in the use, and work-ing life is short, and material is the charging tray of Co20, and work-ing life is longer, but its cost height.
Summary of the invention
The problem that the present invention solves is to provide a kind of heating means of titanium or titanium alloy Large Titanium slab, avoids the scuffing of steel slab surface in the heat-processed effectively, has reduced the cost of manufacture of backing plate when not shortening backing plate work-ing life.
The present invention is achieved through the following technical solutions:
A kind of heating means of titanium or titanium alloy Large Titanium slab may further comprise the steps:
1) compound backing plate is allocated and transported stove gate, on compound backing plate, placed the angle steel of 4～8 high 50～70mm of being, then the titanium slab is placed on the angle steel to pusher-type furnace; Described compound backing plate is base material in the middle of being with the carbon steel sheet, is upper and lower cover material with stainless steel plate, the composition board that is composited through blast;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 600～800 ℃ of preheating 40～60min, be warming up to 840～960 ℃ of heating 100～140min, again at 840～960 ℃ of insulation 40～80min;
3) after the heating of titanium slab is finished and come out of the stove, the titanium slab is separated with compound backing plate, the titanium slab enters the following process link.
The length of described compound backing plate is greater than the water beam spacing of pusher-type furnace, and less than the effective width of pusher-type furnace, the minimum thickness that its thickness requires greater than pusher.
The carbon steel of described compound backing plate is 1: 4～6 with the ratio of stainless thickness.
Described titanium slab is to separate on the solid matter roller-way before milling train with compound backing plate, and the titanium slab enters milling train and carries out following process.
Compared with prior art, the present invention has following beneficial technical effects:
The heating means of titanium or titanium alloy Large Titanium slab provided by the invention, backing plate when heating as the titanium slab with the compound backing plate of stainless steel and carbon steel-stainless steel, avoid the scuffing of steel slab surface in the heat-processed effectively, the use of angle steel has been avoided slab directly to contact with backing plate and has been caused the slab heating uneven;
The length of compound backing plate is greater than the water beam spacing of pusher-type furnace, and less than the effective width of pusher-type furnace, the minimum thickness that its thickness requires greater than pusher, width are determined according to blank specification commonly used;
This composition board had both had characteristics such as stainless heat-resisting, wear-resistant, corrosion-resistant, high heat conduction, prolonged the work-ing life of backing plate, possess simultaneously the physical strength of carbon steel and easy machining characteristics again, when not shortening backing plate work-ing life, greatly reduce the cost of manufacture of backing plate.
The heating means of titanium or titanium alloy Large Titanium slab provided by the invention, the steel slab surface after the heating does not have the scuffing defective, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment, and the explanation of the invention is not limited.
Embodiment 1
Heating thickness is 200mm, and width is 1200mm, and length is the TA2 titanium slab of 1700mm, and adopting the thickness ratio is 4, and specification is the compound backing plate of stainless steel and carbon steel-stainless steel of 50 * 1600 * 2400mm, and concrete heat-processed is:
1) compound backing plate is allocated and transported stove gate to pusher-type furnace, on compound backing plate uniform 4 high be the angle steel of 50mm, then the titanium slab is placed on the angle steel;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 600～650 ℃ of preheating 40min, be warming up to 840～860 ℃ of heating 140min, again at 840～860 ℃ of insulation 80min;
3) after heating was finished, the titanium slab went out process furnace, separates with compound backing plate on the solid matter roller-way before milling train, and the titanium slab is sent into and carried out hot-work on the milling train.
Sheet material after the hot-work, its surface does not have the defective of scuffing, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Embodiment 2
Heating thickness is 180mm, and width is 1100mm, and length is the TA2 titanium slab of 1500mm, and adopting the thickness ratio is 6, and specification is the compound backing plate of stainless steel and carbon steel-stainless steel of 50 * 1600 * 2400mm, and concrete heat-processed is:
1) compound backing plate is allocated and transported stove gate to pusher-type furnace, on compound backing plate uniform 6 high be the angle steel of 70mm, then the titanium slab is placed on the angle steel;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 750～800 ℃ of preheating 60min, be warming up to 940～960 ℃ of heating 100min, again 940～960 ℃ of insulations 40;
3) after heating was finished, the titanium slab went out process furnace, separates with compound backing plate on the solid matter roller-way before milling train, and the titanium slab is sent into and carried out hot-work on the milling train.
Sheet material after the hot-work, its surface does not have the defective of scuffing, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Embodiment 3
Heating thickness is 240mm, and width is 1000mm, and length is the TC4 titanium slab of 1500mm, and adopting the thickness ratio is 5, and specification is the compound backing plate of stainless steel and carbon steel-stainless steel of 50 * 1600 * 2400mm, and concrete heat-processed is:
1) compound backing plate is allocated and transported stove gate to pusher-type furnace, on compound backing plate uniform 8 high be the angle steel of 70mm, then the titanium slab is placed on the angle steel;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 700～750 ℃ of preheating 50min, be warming up to 860～900 ℃ of heating 120min, again at 860～900 ℃ of insulation 60min;
3) after heating was finished, the titanium slab went out process furnace, separates with compound backing plate on the solid matter roller-way before milling train, and the titanium slab is sent into and carried out hot-work on the milling train.
Sheet material after the hot-work, its surface does not have the defective of scuffing, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Embodiment 4
Heating thickness is 240mm, and width is 1000mm, and length is the TC4 titanium slab of 1500mm, and adopting the thickness ratio is 5, and specification is the compound backing plate of stainless steel and carbon steel-stainless steel of 50 * 1600 * 2400mm, and concrete heat-processed is:
1) compound backing plate is allocated and transported stove gate to pusher-type furnace, on compound backing plate uniform 8 high be the angle steel of 70mm, then the titanium slab is placed on the angle steel;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 68～720 ℃ of preheating 45min, be warming up to 880～920 ℃ of heating 120min, again at 880～920 ℃ of insulation 50min;
3) after heating was finished, the titanium slab went out process furnace, separates with compound backing plate on the solid matter roller-way before milling train, and the titanium slab is sent into and carried out hot-work on the milling train.
Sheet material after the hot-work, its surface does not have the defective of scuffing, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Embodiment 5
Heating thickness is 240mm, and width is 1000mm, and length is the TC4 titanium slab of 1500mm, and adopting the thickness ratio is 4.5, and specification is the compound backing plate of stainless steel and carbon steel-stainless steel of 50 * 1600 * 2400mm, and concrete heat-processed is:
1) compound backing plate is allocated and transported stove gate to pusher-type furnace, on compound backing plate uniform 8 high be the angle steel of 70mm, then the titanium slab is placed on the angle steel;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 680～720 ℃ of preheating 55min, be warming up to 900～920 ℃ of heating 100min, again at 900～920 ℃ of insulation 40min;
3) after heating was finished, the titanium slab went out process furnace, separates with compound backing plate on the solid matter roller-way before milling train, and the titanium slab is sent into and carried out hot-work on the milling train.
Sheet material after the hot-work, its surface does not have the defective of scuffing, and distortion and wearing and tearing do not appear in the compound backing plate after the use.
Claims (4)
1. the heating means of a titanium or titanium alloy Large Titanium slab is characterized in that, may further comprise the steps:
1) compound backing plate is allocated and transported stove gate, on compound backing plate, placed the angle steel of 4～8 high 50～70mm of being, then the titanium slab is placed on the angle steel to pusher-type furnace; Described compound backing plate is base material in the middle of being with the carbon steel sheet, is upper and lower cover material with stainless steel plate, the composition board that is composited through blast;
2) with pusher compound backing plate and titanium slab are pushed pusher-type furnace together, behind 600～800 ℃ of preheating 40～60min, be warming up to 840～960 ℃ of heating 100～140min, again at 840～960 ℃ of insulation 40～80min;
3) after the heating of titanium slab is finished and come out of the stove, the titanium slab is separated with compound backing plate, the titanium slab enters the following process link.
2. the heating means of titanium or titanium alloy Large Titanium slab as claimed in claim 1, it is characterized in that, the length of described compound backing plate is greater than the water beam spacing of pusher-type furnace, and less than the effective width of pusher-type furnace, the minimum thickness that its thickness requires greater than pusher.
3. the heating means of titanium or titanium alloy Large Titanium slab as claimed in claim 1 is characterized in that, the carbon steel of described compound backing plate is 1: 4～6 with the ratio of stainless thickness.
4. the heating means of titanium or titanium alloy Large Titanium slab as claimed in claim 1 is characterized in that, described titanium slab is to separate on the solid matter roller-way before milling train with compound backing plate, and the titanium slab enters milling train and carries out following process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010607954 CN102031469B (en) | 2010-12-28 | 2010-12-28 | Method for heating large titanium and titanium alloy slabs |
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| CN 201010607954 CN102031469B (en) | 2010-12-28 | 2010-12-28 | Method for heating large titanium and titanium alloy slabs |
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| CN102031469A true CN102031469A (en) | 2011-04-27 |
| CN102031469B CN102031469B (en) | 2012-07-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152666A (en) * | 2014-07-25 | 2014-11-19 | 南京钢铁股份有限公司 | Heat treatment process for producing high-quality die steel in car bottom furnace |
| CN104525567A (en) * | 2014-12-11 | 2015-04-22 | 西部钛业有限责任公司 | TA7 titanium alloy plate rolling method |
| CN107116102A (en) * | 2017-05-23 | 2017-09-01 | 舞阳钢铁有限责任公司 | A kind of heating production method of big thickness titanium base |
| CN108479879A (en) * | 2018-05-31 | 2018-09-04 | 陆林学 | A kind of biochemical reaction suck-back device |
| CN111424225A (en) * | 2020-04-26 | 2020-07-17 | 攀钢集团攀枝花钢钒有限公司 | Process method for heating titanium billet by adopting large walking beam type billet heating furnace |
| CN111940508A (en) * | 2020-07-06 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Titanium blank heating process of steel pushing heat accumulating type heating furnace |
| CN111940507A (en) * | 2020-07-02 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for rolling thin and wide titanium plate in one fire |
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| CN101412038A (en) * | 2008-08-08 | 2009-04-22 | 湖南华菱涟源钢铁有限公司 | Method for producing metallic titanium plate using medium-wide strip hot rolling machine set |
| CN101812652A (en) * | 2009-11-30 | 2010-08-25 | 莱芜钢铁股份有限公司 | Method for heating titanium blank by using continuous heating furnace |
| CN201605292U (en) * | 2009-11-30 | 2010-10-13 | 西部金属材料股份有限公司 | On-line heating device for metal hot-working |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101412038A (en) * | 2008-08-08 | 2009-04-22 | 湖南华菱涟源钢铁有限公司 | Method for producing metallic titanium plate using medium-wide strip hot rolling machine set |
| CN101812652A (en) * | 2009-11-30 | 2010-08-25 | 莱芜钢铁股份有限公司 | Method for heating titanium blank by using continuous heating furnace |
| CN201605292U (en) * | 2009-11-30 | 2010-10-13 | 西部金属材料股份有限公司 | On-line heating device for metal hot-working |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152666A (en) * | 2014-07-25 | 2014-11-19 | 南京钢铁股份有限公司 | Heat treatment process for producing high-quality die steel in car bottom furnace |
| CN104152666B (en) * | 2014-07-25 | 2016-06-08 | 南京钢铁股份有限公司 | A kind of car type furnace produces the Technology for Heating Processing of high-quality mould steel |
| CN104525567A (en) * | 2014-12-11 | 2015-04-22 | 西部钛业有限责任公司 | TA7 titanium alloy plate rolling method |
| CN107116102A (en) * | 2017-05-23 | 2017-09-01 | 舞阳钢铁有限责任公司 | A kind of heating production method of big thickness titanium base |
| CN107116102B (en) * | 2017-05-23 | 2019-07-23 | 舞阳钢铁有限责任公司 | A kind of heating production method of big thickness titanium base |
| CN108479879A (en) * | 2018-05-31 | 2018-09-04 | 陆林学 | A kind of biochemical reaction suck-back device |
| CN111424225A (en) * | 2020-04-26 | 2020-07-17 | 攀钢集团攀枝花钢钒有限公司 | Process method for heating titanium billet by adopting large walking beam type billet heating furnace |
| CN111940507A (en) * | 2020-07-02 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Process for rolling thin and wide titanium plate in one fire |
| CN111940508A (en) * | 2020-07-06 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Titanium blank heating process of steel pushing heat accumulating type heating furnace |
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| CN102031469B (en) | 2012-07-25 |
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