CN104588408B - A kind of heating means of industrially pure titanium square billet - Google Patents
A kind of heating means of industrially pure titanium square billet Download PDFInfo
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- CN104588408B CN104588408B CN201510034558.6A CN201510034558A CN104588408B CN 104588408 B CN104588408 B CN 104588408B CN 201510034558 A CN201510034558 A CN 201510034558A CN 104588408 B CN104588408 B CN 104588408B
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 239000010936 titanium Substances 0.000 title claims abstract description 142
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 141
- 238000010438 heat treatment Methods 0.000 title claims abstract description 103
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 238000010792 warming Methods 0.000 claims abstract description 26
- 238000003801 milling Methods 0.000 claims abstract description 13
- 238000002791 soaking Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003556 assay Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 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
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- 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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
- F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working
-
- 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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/022—Blooms or billets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses the heating means of a kind of industrially pure titanium square billet, be the heating technological requirement according to heat industrial pure titanium square billet, heating target temperature is set as 700 ~ 900 DEG C.First from room temperature to 400 ~ 600 DEG C, it is incubated 30 ~ 60min；Then heat to 550 ~ 650 DEG C, be incubated 60 ~ 90min；It is warming up to target temperature, is incubated 60 ~ 100min, to homogenize titanium base.The present invention uses resistance-type heating furnace to mate with gas-fired furnace, carries out complementary heat industrial pure titanium square billet, is i.e. configured with small-sized resistance-type heating furnace by gas-fired furnace and carries out the heating of industrially pure titanium square billet.The present invention can realize high-speed continuous rolling machine and be switched fast between rolled steel and rolling titanium material, reduces milling train stand-by time, improves production efficiency；Solve high-speed continuous rolling machine roughing mill entrance less with gas-fired furnace plug for outlet spacing, square billet cannot be directly entered the problem that roughing mill carries out rolling after electric furnace is come out of the stove, and avoid oxidation and the hydrogen embrittlement problem utilizing gas-fired furnace long-time heating titanium base easily to occur, it is effectively increased the quality of titanium material product.
Description
Technical field
The invention belongs to titanium processing technique field, be specifically related to the heating means of a kind of industrially pure titanium square billet.
Background technology
Titanium or titanium alloy wire are because of the decay resistance of its excellence and the characteristic such as high specific strength, strong human body affinity, and are widely used in the fields such as Aero-Space, automobile, tool connection, medicine equipment.The traditional mode of production of titanium or titanium alloy line, silk material typically uses discontinuous rolling mode, and titanium or titanium alloy are rolled into the line of Φ 6～Φ 10, screw material, redraws into wire rod or the silk material of required specification.The shortcomings such as existing titanium or titanium alloy line, the production method of screw material, generally forge or swage, and both approaches is required to heating for multiple times, has energy consumption high, and labour intensity is big, and production efficiency is low, and product size fluctuation is big, type quality difference.
The most also occur utilizing hot rolling to produce titanium or titanium alloy bar, the method for wire rod, all only need to once heat.The heating of Φ 100mm pure titanium rod base is carried out for example with electric furnace；Trolley heating furnace is used to carry out rod base heating.But all only illustrate the control range of heating-up temperature, and the concrete control method of not mentioned heating furnace, and in actual production, owing to the thermal conductivity of industrially pure titanium is poor, when the low-temperature zone heat time is too fast, easily cause industrially pure titanium square billet internal and external temperature gradient big, produce thermal stress, cause internal fissure, if long in the high temperature section time of staying, then can form surface gettering layer with the element generation kickback such as the oxygen in stove, nitrogen, deteriorate the deformation performance of industrially pure titanium, cause final products surface quality to deteriorate.
Also on titanium based on pusher-type furnace or the heating means of titanium alloy large-sized slab, after 600 ~ 800 DEG C of preheating 40 ~ 60min, it is warming up to 840 ~ 960 DEG C of heating 100 ~ 140min, then is incubated 40 ~ 80min at 840 ~ 960 DEG C；Heating means about heating furnace series connection heat industrial Titanium board base, first heat in preheating furnace, subsequently into the method carrying out in heating furnace heating, preheating temperature is 580 ~ 600 DEG C, heating-up temperature is 860 ~ 880 DEG C, there is presently no and industrially pure titanium square billet is heated, the method particularly carrying out the industrially pure titanium square billet heating being suitable for during steel-titanium tandem rolling on high-speed continuous rolling machine.
Using high speed tandem rolling mode to carry out industrially pure titanium rod, the rolling of wire rod, production efficiency is high, good product quality, but owing to market capacity is limited, if investing newly-built special tandem mill to carry out industrially pure titanium rod, the production of wire rod, tandem mill cannot realize full production, and this will be greatly increased cost of investment.Then, steel-titanium is used to combine, carry out industrially pure titanium rod by the equipment producing steel, the production of wire rod becomes the currently active reduction investment cost and the production model of titanium material production cost, but, owing to industrially pure titanium is excellent, wire production amount is less, the yield of the original gas-fired furnace of steel rolling mill is significantly larger than industrially pure titanium rod, the demand of wire rod.In addition, owing to part high-speed continuous rolling machine 1# roughing mill entrance is shorter with gas-fired furnace plug for outlet spacing, square billet is after electric furnace is come out of the stove, roughing mill cannot be directly entered roll, in order to solve this contradiction and above-mentioned technical problem, the heating means developing a kind of industrially pure titanium square billet that can solve the problems referred to above are very important.
Summary of the invention
It is an object of the invention to provide the heating means of a kind of industrially pure titanium square billet.
The object of the present invention is achieved like this, comprises the following steps:
A, hanging in resistance-type heating furnace by industrially pure titanium square billet, from room temperature to 400 ~ 600 DEG C, be incubated 30 ~ 60min, then heat to 550 ~ 650 DEG C, be incubated 60 ~ 90min, then be warming up to 700 ~ 900 DEG C, 60 ~ 100min is to homogenize industrially pure titanium square billet in insulation；
B, it is being warming up to 700 ~ 900 DEG C, during insulation 60 ~ 100min state, gas-fired furnace stops tapping and vacates hanging arm roll so that industrially pure titanium square billet passes through, turn down soaking zone burner, gas-fired furnace furnace temperature is down to 800 ~ 900 DEG C from 1100 ~ 1250 DEG C, micro-pressure operation is pressed, controling of the pressure of the oven oxygen impact on industrially pure titanium square billet under 0 ~ 10Pa is with reduction hot conditions in gas-fired furnace stove；
C, being hung out from resistance-type heating furnace by the industrially pure titanium square billet that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in gas-fired furnace by industrially pure titanium square billet；
D, by the hanging arm roll in gas-fired furnace by industrially pure titanium square billet feeding milling train roll；
E, gas-fired furnace are warming up to 1100 ~ 1250 DEG C again, recovery heating steel billet, carry out normal billet rolling, and circulation above step completes the heating of new industrially pure titanium square billet.
The present invention uses resistance-type heating furnace to mate with gas-fired furnace, carries out complementary heat industrial pure titanium square billet, is i.e. configured with small-sized resistance-type heating furnace by gas-fired furnace and carries out the heating of industrially pure titanium square billet.The present invention can realize high-speed continuous rolling machine and be switched fast between rolled steel and rolling titanium material, reduces milling train stand-by time, improves production efficiency；Solve high-speed continuous rolling machine roughing mill entrance less with gas-fired furnace plug for outlet spacing, square billet cannot be directly entered the problem that roughing mill carries out rolling after electric furnace is come out of the stove, and avoid oxidation and the hydrogen embrittlement problem utilizing gas-fired furnace long-time heating titanium base easily to occur, it is effectively increased the quality of titanium material product.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but is any limitation as the present invention never in any form, based on present invention teach that any conversion or replacement made, belongs to protection scope of the present invention.
The heating means of industrially pure titanium square billet of the present invention, comprise the following steps:
A, hanging in resistance-type heating furnace by industrially pure titanium square billet, from room temperature to 400 ~ 600 DEG C, be incubated 30 ~ 60min, then heat to 550 ~ 650 DEG C, be incubated 60 ~ 90min, then be warming up to 700 ~ 900 DEG C, 60 ~ 100min is to homogenize industrially pure titanium square billet in insulation；
B, it is being warming up to 700 ~ 900 DEG C, during insulation 60 ~ 100min state, gas-fired furnace stops tapping and vacates hanging arm roll so that industrially pure titanium square billet passes through, turn down soaking zone burner, gas-fired furnace furnace temperature is down to 800 ~ 900 DEG C from 1100 ~ 1250 DEG C, micro-pressure operation is pressed, controling of the pressure of the oven oxygen impact on industrially pure titanium square billet under 0 ~ 10Pa is with reduction hot conditions in gas-fired furnace stove；
C, being hung out from resistance-type heating furnace by the industrially pure titanium square billet that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in gas-fired furnace by industrially pure titanium square billet；
D, by the hanging arm roll in gas-fired furnace by industrially pure titanium square billet feeding milling train roll；
E, gas-fired furnace are warming up to 1100 ~ 1250 DEG C again, recovery heating steel billet, carry out normal billet rolling, and circulation above step completes the heating of new industrially pure titanium square billet.
The heating rate from room temperature to 400 ~ 600 DEG C described in step A is 4 ~ 7 DEG C/min.
The heating rate being warming up to 550 ~ 650 DEG C described in step A is 5 ~ 8 DEG C/min.
The heating rate being warming up to 700 ~ 900 DEG C described in step A is 1 ~ 3 DEG C/min.
Resistance-type heating furnace described in step A is positioned over gas-fired furnace and moves back by steel roller-way stand, and the industrially pure titanium square billet that is beneficial to come out of the stove rapidly enters gas-fired furnace, reduces industrially pure titanium square billet temperature drop.
Step C is additionally included in the steel roller-way stand that moves back of gas-fired furnace and industrially pure titanium square billet temperature is measured step, if measured temperature is less than 650 DEG C, then by industrially pure titanium square billet at gas-fired furnace inside holding 1 ~ 5min, make industrially pure titanium square billet temperature be increased to more than 650 DEG C and perform D step again, industrially pure titanium square billet is rolled.
For to guarantee that industrially pure titanium square billet enters normally nipping of roughing mill in D step, industrially pure titanium square billet goes out after fire door leaves hanging arm roll, should operate gas-fired furnace step rate to be delivered on hanging arm roll by the steel billet gone out on steel billet position, the roughing mill once industrially pure titanium square billet can not be nipped, propelling movement industrially pure titanium square billet of being come out of the stove by this steel billet enters milling train.
The size of described industrially pure titanium square billet is 140 ~ 165mm × 140 ~ 165mm × 4000 ~ 5500mm.
The operation principle of the present invention and process
A, the industrially pure titanium square billet that one ruler cun is (140 ~ 165) mm × (140 ~ 165) mm × (4000 ~ 5500) mm is hung in resistance-type heating furnace and heats.According to the heating technological requirement of heat industrial pure titanium square billet, heating target temperature is set as 700 ~ 900 DEG C.Wherein, first with the heating rate of 4 ~ 7 DEG C/min, from room temperature to 500 DEG C, it is incubated 30 ~ 60min；Then with the heating rate of 5 ~ 8 DEG C/min, it is warming up to 600 DEG C, is incubated 60 ~ 90min；Finally with the heating rate of 1 ~ 3 DEG C/min, it is warming up to target temperature, is incubated 60 ~ 100min, to homogenize titanium base (industrially pure titanium square billet).
B, when resistance-type heating furnace heating-up temperature reach target temperature proceed to soaking keeping warm mode time, gas-fired furnace stops tapping and also vacates hanging arm roll so that titanium base passes through.Turning down soaking zone burner, from 1100 ~ 1250 DEG C, gas-fired furnace furnace temperature is down to 800 ~ 900 DEG C, press micro-pressure operation in gas-fired furnace stove, controling of the pressure of the oven is 0～10Pa, to reduce the oxygen impact on titanium base under hot conditions.
C, being hung out from resistance-type heating furnace by the titanium base that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in heating furnace by titanium base.
D, by the hanging arm roll in gas-fired furnace by titanium base feeding milling train roll.
E, gas-fired furnace are warming up to 1100 ~ 1250 DEG C again, and recovery heating steel billet carries out normal billet rolling.Resistance-type heating furnace repeats step A, heats a new titanium base.
In described step A, resistance-type heating furnace is positioned over gas-fired furnace and moves back by steel roller-way stand, and the industrially pure titanium square billet that is beneficial to come out of the stove rapidly enters gas-fired furnace, reduces titanium square billet temperature drop.
In described step C, titanium base temperature is measured by the steel roller-way stand that moves back at gas-fired furnace, if measured temperature is less than 650 DEG C, then titanium base is at gas-fired furnace inside holding 1 ~ 5min, making titanium base temperature be increased to more than 650 DEG C and perform D step again, being come out of the stove by titanium base rolls.
In described step D, for guaranteeing that pure titanium square billet enters normally nipping of 1# roughing mill, titanium base goes out after fire door leaves hanging arm roll, should operate gas-fired furnace step rate immediately to be delivered on hanging arm roll by the steel billet gone out on steel billet position, the 1# roughing mill once titanium base can not be nipped, propelling movement titanium base of being come out of the stove by this steel billet rapidly enters milling train.
The feature of the present invention:
(1) present invention can realize high-speed continuous rolling machine rolled steel and rolling titanium material between be switched fast, reduce milling train stand-by time, improve production efficiency.
(2) to solve high-speed continuous rolling machine 1# roughing mill entrance less with gas-fired furnace plug for outlet spacing for the present invention, and square billet is after electric furnace is come out of the stove, it is impossible to be directly entered the problem that roughing mill carries out rolling.
(3) present invention utilizes the coupling of resistance-type heating furnace and gas-fired furnace, it is achieved that industrially pure titanium rod, the small lot rolling of wire rod, produces flexibly, and can make full use of in System on Rolling Steel and change the gap of kind or maintenance and produce, little on Rolling production impact.
(4), in the present invention, pure titanium square billet mainly completes heating and equal thermal process in resistance-type heating furnace, can avoid oxidation and the hydrogen embrittlement problem utilizing gas-fired furnace long-time heating titanium base easily to occur, be effectively increased the quality of titanium material product.
Embodiment 1
A, one ruler cun is hung in resistance-type heating furnace heat for 145mm × 145mm × 5500mm industrially pure titanium square billet.According to the heating technological requirement of heat industrial pure titanium square billet, heating target temperature is set as 750 DEG C.Wherein, first with the heating rate of 4 DEG C/min, from room temperature to 500 DEG C, it is incubated 35min；Then with the heating rate of 5 DEG C/min, it is warming up to 600 DEG C, is incubated 60min；Finally with the heating rate of 1 DEG C/min, it is warming up to 750 DEG C, is incubated 95min, to homogenize titanium base；
B, when resistance-type heating furnace heating-up temperature reach 750 DEG C proceed to soaking keeping warm mode time, gas-fired furnace stops tapping and also vacates hanging arm roll so that titanium base passes through.Turning down soaking zone burner, from 1200 DEG C, gas-fired furnace furnace temperature is down to 800 DEG C, press micro-pressure operation in gas-fired furnace stove, controling of the pressure of the oven is 0～10Pa.
C, being hung out from resistance-type heating furnace by the titanium base that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in heating furnace by titanium base.
D, by hanging arm roll by titanium base feeding milling train roll, the performance parameter assay of the titanium products after rolling is shown in Table 1.
E, gas-fired furnace are warming up to 1200 DEG C again, and recovery heating steel billet carries out normal billet rolling.Resistance-type heating furnace repeats step A, heats a new titanium base.
Embodiment 2
A, the industrially pure titanium square billet that one ruler cun is 150mm × 150mm × 5000mm is hung in resistance-type heating furnace and heats.According to the heating technological requirement of heat industrial pure titanium square billet, heating target temperature is set as 800 DEG C.Wherein, first with the heating rate of 6 DEG C/min, from room temperature to 500 DEG C, it is incubated 45min；Then with the heating rate of 6 DEG C/min, it is warming up to 600 DEG C, is incubated 70min；Finally with the heating rate of 2 DEG C/min, it is warming up to 800 DEG C, is incubated 70min, to homogenize titanium base；
B, when resistance-type heating furnace heating-up temperature reach 800 DEG C proceed to soaking keeping warm mode time, gas-fired furnace stops tapping and also vacates hanging arm roll so that titanium base passes through.Turning down soaking zone burner, from 1250 DEG C, gas-fired furnace furnace temperature is down to 850 DEG C, press micro-pressure operation in gas-fired furnace stove, controling of the pressure of the oven is 0～10Pa.
C, being hung out from resistance-type heating furnace by the titanium base that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in heating furnace by titanium base, at stove inside holding 4min.
D, by hanging arm roll by titanium base feeding milling train roll, the performance parameter assay of the titanium products after rolling is shown in Table 1.
E, gas-fired furnace are warming up to 1250 DEG C again, and recovery heating steel billet carries out normal billet rolling.Resistance-type heating furnace repeats step A, heats a new titanium base.
Embodiment 3
A, the industrially pure titanium square billet that one ruler cun is 165mm × 165mm × 4500mm is hung in resistance-type heating furnace and heats.According to the heating technological requirement of heat industrial pure titanium square billet, heating target temperature is set as 900 DEG C.Wherein, first with the heating rate of 4 DEG C/min, from room temperature to 500 DEG C, it is incubated 60min；Then with the heating rate of 7 DEG C/min, it is warming up to 600 DEG C, is incubated 90min；Finally with the heating rate of 3 DEG C/min, it is warming up to 900 DEG C, is incubated 60min, to homogenize titanium base；
B, when resistance-type heating furnace heating-up temperature reach 900 DEG C proceed to soaking keeping warm mode time, gas-fired furnace stops tapping and also vacates hanging arm roll so that titanium base passes through.Turning down soaking zone burner, from 1100 DEG C, gas-fired furnace furnace temperature is down to 900 DEG C, press micro-pressure operation in gas-fired furnace stove, controling of the pressure of the oven is 0～10Pa.
C, being hung out from resistance-type heating furnace by the titanium base that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in heating furnace by titanium base, at stove inside holding 1min.
D, by hanging arm roll by titanium base feeding milling train roll, the performance parameter assay of the titanium products after rolling is shown in Table 1.
E, gas-fired furnace are warming up to 1100 DEG C again, and recovery heating steel billet carries out normal billet rolling.Resistance-type heating furnace repeats step A, heats a new titanium base.
(titanium products that i.e. prepared by prior art) contrast test data on industrially pure titanium products and marketing prepared by table 1 present invention
| Yield strength/Mpa | Tensile strength/Mpa | Percentage elongation/% | The contraction percentage of area/% | |
| Embodiment 1 | 263 | 452 | 36 | 58 |
| Embodiment 2 | 244 | 407 | 42 | 62 |
| Embodiment 3 | 225 | 380 | 45 | 68 |
| Pure wire rod of titanium product | 305 | 445 | 28 | 57 |
Utilize industrially pure titanium product prepared by the present invention while proof strength, there is more excellent toughness index, follow-up deformation processing and use.
Claims (5)
1. the heating means of an industrially pure titanium square billet, it is characterised in that comprise the following steps:
A, industrially pure titanium square billet is hung in resistance-type heating furnace, with the heating rate of 4 ~ 7 DEG C/min from room temperature to 400 ~ 600 DEG C, insulation 30 ~ 60min, then it is warming up to 550 ~ 650 DEG C with the heating rate of 5 ~ 8 DEG C/min, insulation 60 ~ 90min, being warming up to 700 ~ 900 DEG C with the heating rate of 1 ~ 3 DEG C/min again, 60 ~ 100min is to homogenize industrially pure titanium square billet in insulation；
B, it is being warming up to 700 ~ 900 DEG C, during insulation 60 ~ 100min state, gas-fired furnace stops tapping and vacates hanging arm roll so that industrially pure titanium square billet passes through, turn down soaking zone burner, gas-fired furnace furnace temperature is down to 800 ~ 900 DEG C from 1100 ~ 1250 DEG C, micro-pressure operation is pressed, controling of the pressure of the oven oxygen impact on industrially pure titanium square billet under 0 ~ 10Pa is with reduction hot conditions in gas-fired furnace stove；
C, being hung out from resistance-type heating furnace by the industrially pure titanium square billet that step A heats, be placed in gas-fired furnace moves back steel roller-way stand, utilizes artificial disc turntable frame roller-way to be sent in gas-fired furnace by industrially pure titanium square billet；
D, by the hanging arm roll in gas-fired furnace by industrially pure titanium square billet feeding milling train roll；
E, gas-fired furnace are warming up to 1100 ~ 1250 DEG C again, recovery heating steel billet, carry out normal billet rolling, and circulation above step completes the heating of new industrially pure titanium square billet.
The heating means of industrially pure titanium square billet the most according to claim 1, it is characterized in that resistance-type heating furnace described in step A is positioned over gas-fired furnace and moves back by steel roller-way stand, the industrially pure titanium square billet that is beneficial to come out of the stove rapidly enters gas-fired furnace, reduces industrially pure titanium square billet temperature drop.
The heating means of industrially pure titanium square billet the most according to claim 1, it is characterized in that step C is additionally included in the steel roller-way stand that moves back of gas-fired furnace and industrially pure titanium square billet temperature is measured step, if measured temperature is less than 650 DEG C, then by industrially pure titanium square billet at gas-fired furnace inside holding 1 ~ 5min, make industrially pure titanium square billet temperature be increased to more than 650 DEG C and perform D step again, industrially pure titanium square billet is rolled.
The heating means of industrially pure titanium square billet the most according to claim 1, it is characterized in that in D step as to guarantee that industrially pure titanium square billet enters normally nipping of roughing mill, industrially pure titanium square billet goes out after fire door leaves hanging arm roll, should operate gas-fired furnace step rate to be delivered on hanging arm roll by the steel billet gone out on steel billet position, the roughing mill once industrially pure titanium square billet can not be nipped, propelling movement industrially pure titanium square billet of being come out of the stove by this steel billet enters milling train.
The heating means of industrially pure titanium square billet the most according to claim 1, it is characterised in that the size of described industrially pure titanium square billet is 140 ~ 165mm × 140 ~ 165mm × 4000 ~ 5500mm.
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| CN201510034558.6A CN104588408B (en) | 2015-01-23 | 2015-01-23 | A kind of heating means of industrially pure titanium square billet |
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| CN201510034558.6A CN104588408B (en) | 2015-01-23 | 2015-01-23 | A kind of heating means of industrially pure titanium square billet |
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| CN105710127B (en) * | 2016-03-17 | 2018-02-16 | 武钢集团昆明钢铁股份有限公司 | A kind of method of semi-tandem rolling production industrially pure titanium bar |
| CN107262524B (en) * | 2017-05-27 | 2020-07-28 | 舞阳钢铁有限责任公司 | Heating rolling production method of titanium plate |
| 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 |
| CN112808770A (en) * | 2020-12-29 | 2021-05-18 | 山西太钢不锈钢股份有限公司 | Rapid switching method for steel and titanium rolling |
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| JPS5674302A (en) * | 1979-11-24 | 1981-06-19 | Sumitomo Metal Ind Ltd | Reheating method for steel billet in hot rolling line |
| CN2225603Y (en) * | 1995-06-05 | 1996-04-24 | 山东汽车弹簧厂 | Hydraulic step-by-step gas heating furnace |
| US6233994B1 (en) * | 1997-11-24 | 2001-05-22 | Morgan Construction Company | Apparatus for and method of processing billets in a rolling mill |
| CN2543009Y (en) * | 2002-05-23 | 2003-04-02 | 洛阳隆峰煤气配套设备有限公司 | High-efficiency gas heating furnace |
| CN1283813C (en) * | 2004-11-22 | 2006-11-08 | 宝钢集团上海五钢有限公司 | Method for heating titanium and titanium alloy ingot |
| JP4808068B2 (en) * | 2006-04-25 | 2011-11-02 | 株式会社神戸製鋼所 | Billet rolling method |
| CN101168827A (en) * | 2006-10-26 | 2008-04-30 | 宝山钢铁股份有限公司 | Method for heating light metal blank |
| CN103215433A (en) * | 2013-03-18 | 2013-07-24 | 酒泉钢铁(集团)有限责任公司 | Heating method for heating industrial pure titanium slab by heating furnaces in series connection |
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