CN104249079B - The production method that a kind of high carbon and chromium stainless steel is coiled - Google Patents
The production method that a kind of high carbon and chromium stainless steel is coiled Download PDFInfo
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- CN104249079B CN104249079B CN201410487693.1A CN201410487693A CN104249079B CN 104249079 B CN104249079 B CN 104249079B CN 201410487693 A CN201410487693 A CN 201410487693A CN 104249079 B CN104249079 B CN 104249079B
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Abstract
The invention provides the production method that a kind of high carbon and chromium stainless steel is coiled, the gross mass of coiling taking described high carbon and chromium stainless steel is as benchmark, the content of described carbon is 0.90-1.0 % by weight, the content of described chromium is 17.0-19.0 % by weight, the method comprise by high carbon and chromium stainless steel coil that blank heats successively, rolling, batch, cooling, annealing, described rolling comprise roughing, in roll, pre-finish rolling and finish rolling, it is characterized in that, the entrance rolled piece temperature of described pre-finish rolling is 1000 ± 10 DEG C, and the entrance rolled piece temperature of finish rolling is 1100 ± 10 DEG C. Adopting method of the present invention to obtain high carbon and chromium stainless steel higher than 90% with rolling lumber recovery coils.
Description
Technical field
The present invention relates to the production method that a kind of high carbon and chromium stainless steel is coiled.
Background technology
At present, common high carbon and chromium stainless steel, for example 95Cr18 is stainless steel, its metallographic structure spyLevy as martensite, be generally used for making and require to there is rustless property or weak acid resistant medium and oxidative resistance acid, haveBall, bearing, the high-quality cutter of the corrosion such as machine acid and salt cut, surgery cutter and high abrasion equipment part etc.This kind of stainless steel has high rigidity, high-wearing feature and decay resistance, but self plasticity is poor, has oneFixed production and processing difficulty. Prior art is in the stainless process of rolling high carbon and chromium, and rolling difficulty veryGreatly, often there is the phenomenon of dehiscence in the head at the hot rolling initial stage, and be also prone to and split in whole production processHead is split tail, and lumber recovery is low.
On the other hand, in order to meet the demand of following process, the structure steel bar after hot rolling is generally by web-likeDelivery, in the process that prior art is coiled at production high carbon and chromium stainless steel, for steel bar is made and coiledBatch steel bar, because this kind of stainless steel carbon content is higher, plasticity is poor, stainless steel while batchingEasily produce brittle failure and problem of Cracking, lumber recovery is lower. In addition the high carbon and chromium that, prior art is produced is stainlessSteel disk volume adopts 130mm*130mm*3000mm or 150mm*150mm*9000mm specification mostlyStrand is produced, production to coil heavy be only 0.02-1.4 ton, coil heavily lowly, production efficiency is lower, andAnd product hardness is larger, percentage elongation is low, can not meet user high carbon and chromium stainless steel is coiled to drawingThe requirement of energy, causes drawing lumber recovery low.
Summary of the invention
The object of the invention is to overcome method high carbon and chromium that existing production high carbon and chromium stainless steel coils notThe low defect of rust steel disk volume lumber recovery, provides high carbon and chromium stainless steel that a kind of rolling lumber recovery is high to coilProduction method.
The invention provides the production method that a kind of high carbon and chromium stainless steel is coiled, stainless with described high carbon and chromiumThe gross mass of steel disk volume is benchmark, and the content of described carbon is 0.90-1.0 % by weight, and the content of described chromium is17.0-19.0 % by weight, the method comprises that high carbon and chromium stainless steel is coiled to blank to be heated successively, rollMake, batch, cooling, annealing, described rolling comprise roughing, in roll, pre-finish rolling and finish rolling, wherein,The condition of described rolling comprises that the entrance rolled piece temperature of pre-finish rolling is 1000 ± 10 DEG C, the entrance rolled piece of finish rollingTemperature is 1100 ± 10 DEG C.
The production method that adopts high carbon and chromium stainless steel provided by the invention to coil, can effectively avoid high-carbonHigh chromium-stainless steel is straight on the head split the generation of tail phenomenon in the operation of rolling, has effectively improved high carbon and chromium stainless steelThe lumber recovery of coiling.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is elaborated. Should be understood that, retouch in this placeThe detailed description of the invention of stating only, for description and interpretation the present invention, is not limited to the present invention.
The invention provides the production method that a kind of high carbon and chromium stainless steel is coiled, stainless with described high carbon and chromiumThe gross mass of steel disk volume is benchmark, and the content of described carbon is 0.9-1 % by weight, and the content of described chromium is 17-19% by weight, the method comprise by high carbon and chromium stainless steel coil that blank heats successively, rolling, batch,Cooling, annealing, described rolling comprise roughing, in roll, pre-finish rolling and finish rolling, wherein, described rollingCondition comprises that the entrance rolled piece temperature of pre-finish rolling is 1000 ± 10 DEG C, and the entrance rolled piece temperature of finish rolling is 1100±10℃。
The present invention is 1000 ± 10 DEG C by the entrance rolled piece temperature of controlling pre-finish rolling, the entrance rolled piece of finish rollingTemperature is 1100 ± 10 DEG C, can ensure that the high carbon and chromium stainless steel obtaining coils and have good plasticity,Avoid occurring that straight on the head splitting tail causes waste product.
In the present invention, the preparation method of described blank can adopt the method for this area routine, as long as makeDuring high carbon and chromium stainless steel of the present invention coils, the gross mass of coiling with described high carbon and chromium stainless steelFor benchmark, the content of described carbon is 0.9-1 % by weight, and the content of described chromium is 17-19 % by weight.In general, the preparation method of described blank comprises: refining at the beginning of molten iron is carried out, obtain molten steel, and at the beginning of inciting somebody to actionThe molten steel that refining obtains is tapped in ladle; In tapping process, molten steel is carried out to pre-deoxidation alloying and increasingCarbon; After tapping, the molten steel in ladle is carried out to ladle furnace refining, described ladle furnace refining generally includes LFStove refining temperature adjustment processing and vacuum refining, micro-further to remove the field trash in molten steel and to carry out alloyAdjust, then molten steel after refining injected to tundish, and from tundish be poured into continuously crystallizer withPulled continuously with cooling, continuous casting obtains blank. Wherein, in described pre-deoxidation alloying and carburetting stepIn rapid, make the component in molten steel preferably meet this by controlling the addition of carburant and ferrochromeThe requirement of invention.
In the present invention, described rolling refers to metal stock by the pass of a pair of rotary roller, because being subject toThe compression of roll reduces material section, the pressure processing method that length increases. Under normal circumstances, described inRolling comprise roughing, in roll, pre-finish rolling and finish rolling, wherein, roughing refers to and uses the of rolling lineA process that milling train unit is rolled rolled piece, in this process, deformation of rolled wire amount is larger, to rollingThe required precision of part rolling deformation is not high; In roll and refer to and use second milling train unit of rolling line to rollingThe process that part is rolled; Pre-finish rolling refers to the previous milling train unit of wire rod reducing sizing mill group, rolled pieceDeflection compared with in to roll process little, it provides the workpiece measurement that ratio of precision is higher for finishing stands; Finish rolling refers toThe process that uses wire rod reducing sizing mill group to be rolled rolled piece, in this process, rolled piece has small changeShape is higher to the required precision of rolled piece rolling deformation. Under preferable case, the described operation of rolling also comprises controlWorkpiece front end surface is 20-40 DEG C with the temperature difference at center, and more preferably, in situation, the described operation of rolling existsUnder the state that high pressure water descaling device is closed, carry out. Under above-mentioned preferable case, be rolled, can enter oneStep prevent that straight on the head phenomenon from appearring in blank in the operation of rolling, and make rolled piece surface be not prone to iron sheet defect,Quality is better. Can adopt head not cold by turning down each milling train group cooling water and milling train refrigerating modeBut carry out better to control the temperature difference at workpiece front end surface and center.
Under preferable case, roll rolled piece temperature difference in process in described and be no more than 50 DEG C, described in effectively controllingThe entrance rolled piece temperature of pre-finish rolling is 1000 ± 10 DEG C. The present invention is not special to the control method of the temperature differenceRestriction, be 1000 ± 10 DEG C as long as make the entrance rolled piece temperature of finish rolling, for example, can byHeater is installed after roughing and is rolled rolled piece temperature difference in process in reducing. Under preferable case, the present invention adoptsWith simple and easy natural gas combustion nozzle heater.
In the present invention, described heating is to instigate described blank to soften, and strengthens its plasticity, is convenient toIt is rolled. The method of described heating can be the heating means of this area routine, the present invention forDescribed blank is slowly heated, under preferable case, described in add thermal recovery walking beam heating furnace to instituteState blank and carry out, described burner hearth absolute pressure is 2-4Pa, and described air-fuel ratio is 8-10:1.
The present invention by the heating process of described heating furnace formulated preheating section, heating one section, heating two sections andSoaking zone, can prevent that blank head cooling is too fast, further avoid the operation of rolling straight on the head and angleSplit the generation of problem, under preferable case, described preheating section, one section of heating, two sections of heating and soaking zone are eachThe temperature of section is respectively 620-680 DEG C, 880-920 DEG C, 1000-1150 DEG C and 1160-1200 DEG C; DescribedThe tapping temperature of blank is 1160-1200 DEG C.
In the present invention, the rolled piece after finish rolling is put into Laying head by described curling referring to, through Laying headCurl into dish circle. To curling temperature, there is no particular limitation in the present invention, as long as meet its high carbon and chromiumThere is not brittle failure and problem of Cracking at curly course in stainless steel disc circle, under preferable case, described curlingTemperature >=1050 DEG C, are preferably 1050-1070 DEG C.
In the present invention, one skilled in the art will appreciate that for fear of high carbon and chromium stainless steelThere is brittle failure and problem of Cracking in dish circle, need to control the rate of temperature fall of high carbon and chromium stainless steel disc circle, preferablyIn situation, described cooling employing Stanermo wind-cooling linear slow cooling technology, described Stanermo wind-cooling linear roller-waySpeed is 0.2-0.4m/s, goes out temperature >=600 DEG C of Stanermo wind-cooling linear, is preferably 600-650 DEG C.
Under preferable case, described Stanermo wind-cooling linear stay-warm case is in closed condition, so that isolated heatAmount, better controls rate of temperature fall.
Use above-mentioned Stanermo wind-cooling linear retarded cooling process, can better control the cooling speed of described dish circleRate, not only can prevent that brittle failure and problem of Cracking from appearring in dish circle, and makes production efficiency from original 10Ton/hour bring up to 25 tons/hour, production efficiency has improved 150%.
In the present invention, described annealing refers to high carbon and chromium stainless steel is coiled and is slowly heated to recrystallization temperatureMore than degree, keep enough time, then, with the cooling a kind of Technology for Heating Processing of Reasonable Speed, its objective isMake to soften through the steel of rolling, reduce its hardness, improve plasticity and toughness, remove residual stress, obtainThe physical property of expection. The method according to this invention, is ensureing that improving described high carbon and chromium stainless steel coilsUnder the prerequisite of rolling lumber recovery, in order to meet user to coiling the requirement of cold-drawn performance, need to further carryThe plasticity of coiling described in height and toughness. In order to achieve the above object, under preferable case, described annealing adoptsThe bell furnace of N2 protection soften and spheroidizing processing, and described soft annealing holding temperature is 850 ±10 DEG C, temperature retention time is 6-8h; Described spheroidizing holding temperature is 710 ± 10 DEG C, and temperature retention time is2-4h. By adopting above-mentioned annealing process, the hardness that can ensure to deliver goods is less than 235HB, and reduction of area is greater than25%, further meet user and draw cold performance requirement.
In the method for the invention, after annealing, described high carbon and chromium stainless steel disc being involved in to row beats againVolume, so that packaging and transport.
In the present invention, the monovolume weight of coiling in order to improve described high carbon and chromium stainless steel, preferable caseUnder, described blank is 200mm*200mm*6000mm die casting square billet.
In the present invention, under preferable case, described high carbon and chromium stainless steel is coiled as high carbon and chromium martensiticStainless steel is coiled; More preferably in situation, described high carbon and chromium stainless steel is coiled and is coiled for 95Cr18 hot rolling,For example, 95Cr18,95Cr18Mo, 95Cr18MoV, 102Cr17,102Cr17Mo and 102Cr17MoVCoil Deng hot rolling.
The invention will be further described by the following examples. In following examples, high carbon and chromium is stainlessThe delivery hardness of steel disk volume adopts national standard (GB231-84) regulation Brinell hardness test to record, faceShrinkage adopts the assay method of national standard (GB/T228-2002) the regulation contraction percentage of area to record.
Embodiment 1
The present embodiment is for illustrating the method that production high carbon and chromium stainless steel provided by the invention is coiled.
The 95Cr18 stainless steel die casting square billet that is 200mm*200mm*6000mm by specification is (with blankGross weight be benchmark, C:0.90-1.0 % by weight, Cr:17.0-19.0 % by weight) add at stepping beam typeIn hot stove, carry out respectively preheating section (620-650 DEG C), heat one section (880-900 DEG C), heat two sectionsThe heating of (1000-1050 DEG C) and soaking zone (1160-1170 DEG C), controls furnace pressure simultaneously and is2.0Pa, air-fuel ratio control is 8:1. Before rolling, close high pressure water descaling device, make rollingThe temperature difference at journey workpiece front end surface and center is 40 DEG C, then with roughing mill, blank diameter is rolled into φ98mm, after roughing and in adopt simple and easy natural gas combustion nozzle to heat blank before rolling, in rollEntrance rolled piece temperature difference be 50 DEG C, use pre-finishing mill that blank diameter is rolled into φ 7.2mm, then makeBlank is carried out to finish rolling with wire rod reducing sizing mill, blank diameter is rolled into φ 5.5mm. Adopt Laying headCarry out curlingly, controlling laying temperature is 1050 DEG C, simultaneously clot. Adopt Stanermo wind-cooling linear slow cooling workSkill is carried out slow cooling, closes Stanermo wind-cooling linear stay-warm case, and to control roller table speed be 0.2m/s, goes out thisThe temperature of Tai Ermo air-cooled line is 600 DEG C. Adopt the bell furnace of N2 protection to anneal, soft annealing is protectedTemperature temperature is 840 DEG C, and temperature retention time is 6h; Spheroidizing holding temperature is 700 DEG C, and temperature retention time is2h, carries out clot again by coiling after annealing, obtains high carbon and chromium stainless steel and coils X1.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, find that in the operation of rolling, little appearance is straight on the head splitThe phenomenon of tail, rolling lumber recovery is 91.8%, it is 91.3% that high carbon and chromium stainless steel is coiled X1 lumber recovery,Delivery hardness is 230HB, and reduction of area is 28%.
Embodiment 2
The present embodiment is for illustrating the method that production high carbon and chromium stainless steel provided by the invention is coiled.
The 95Cr18MoV stainless steel die casting square billet that is 200mm*200mm*6000mm by specification (withThe gross weight of blank is benchmark, C:0.90-1.0 % by weight, Cr:17.0-19.0 % by weight) at step rateIn formula heating furnace, carry out respectively preheating section (650-680 DEG C), heating one section of (900-920 DEG C), heating twoThe heating of section (1050-1150 DEG C) and soaking zone (1170-1180 DEG C), controls furnace pressure simultaneously and is4.0Pa, air-fuel ratio control is 9:1. Before rolling, close high pressure water descaling device, make rollingThe temperature difference at journey workpiece front end surface temperature and center is 30 DEG C; Then with roughing mill by blank diameter rollingBecome φ 98mm, roughing after with in adopt simple and easy natural gas combustion nozzle to heat blank before rolling,In the entrance rolled piece temperature difference of rolling be 40 DEG C, use pre-finishing mill that blank diameter is rolled into φ 8.6mm,Re-use wire rod reducing sizing mill blank is carried out to finish rolling, blank diameter is rolled into φ 6.5mm. Employing is toldSilk machine carries out curling, and controlling laying temperature is 1060 DEG C, clot simultaneously. Employing Stanermo wind-cooling linear is slowCold technique is carried out slow cooling, closes Stanermo wind-cooling linear stay-warm case, and to control roller table speed be 0.4m/s,The temperature that goes out Stanermo wind-cooling linear is 650 DEG C. Adopt the bell furnace of N2 protection to anneal, softening moving backFire holding temperature is 850 DEG C, and temperature retention time is 7h; Spheroidizing holding temperature is 710 DEG C, when insulationBetween be 3h, by coiling and again carry out clot after annealing, obtain high carbon and chromium stainless steel and coil X2.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 92%, it is 91.5% that high carbon and chromium stainless steel is coiled X2 lumber recovery, deliveryHardness≤220HB, reduction of area is 32%.
Embodiment 3
The present embodiment is for illustrating the method that production high carbon and chromium stainless steel provided by the invention is coiled.
The 95Cr18Mo die casting square billet that is 200mm*200mm*6000mm by specification (total with blankWeight is benchmark, C:1.0 % by weight, Cr:19.0 % by weight) in walking beam heating furnace, enter respectivelyRow preheating section (660 DEG C), heating one section of (900 DEG C), heating two sections of (1100 DEG C) and soaking zones (1180 DEG C)Heating, control furnace pressure is 4.0Pa simultaneously, air-fuel ratio control is 10:1. Before rolling, closeClose high pressure water descaling device, making the temperature difference at operation of rolling workpiece front end surface and center is 20 DEG C, thenBlank diameter is rolled into φ 98mm with roughing mill, after roughing and in adopt before rolling simple and easy naturalGas burner heats blank, in the entrance rolled piece temperature difference of rolling be 30 DEG C,, use the pre-finishing mill willBlank diameter is rolled into φ 9.2mm, re-uses wire rod reducing sizing mill blank is carried out to finish rolling, and blank is straightFootpath is rolled into φ 7.0mm. Adopt Laying head to carry out curling, controlling laying temperature is 1070 DEG C, beats simultaneouslyVolume. Adopt Stanermo wind-cooling linear retarded cooling process to carry out slow cooling, close Stanermo wind-cooling linear stay-warm case,And to control roller table speed be 0.3m/s, the temperature that goes out Stanermo wind-cooling linear is 700 DEG C. Adopt N2 protectionBell furnace anneal, soft annealing holding temperature is 860 DEG C, temperature retention time is 8h; SpheroidizingHolding temperature is 720 DEG C, and temperature retention time is 4h, and coiling after annealing carried out to clot again, obtains heightCarbon high chromium-stainless steel is coiled X3.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 92.8%, it is 92.3% that high carbon and chromium stainless steel is coiled X3 lumber recovery, hands overGoods hardness is 210HB, and reduction of area is 35%.
Embodiment 4
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, make the operation of rollingThe temperature difference at workpiece front end surface and center is 50 DEG C, obtains high carbon and chromium stainless steel and coils X4.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.0%, it is 90.5% that high carbon and chromium stainless steel is coiled X4 lumber recovery, hands overGoods hardness is 230HB, and reduction of area is 28%.
Embodiment 5
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, control rolled piece and enterEnter the poor temperature 60 C of intermediate mill poker, obtain high carbon and chromium stainless steel and coil X5.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.4%, it is 91.0% that high carbon and chromium stainless steel is coiled X5 lumber recovery, hands overGoods hardness is 230HB, and reduction of area is 28%.
Embodiment 6
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, control the temperature of weaving silkDegree is 950 DEG C, obtains high carbon and chromium stainless steel and coils X6.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.8%, it is 90.5% that high carbon and chromium stainless steel is coiled X6 lumber recovery, hands overGoods hardness is 230HB, and reduction of area is 28%.
Embodiment 7
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, control steyrThe air-cooled line roller table speed that rubs is 0.5m/s, obtains high carbon and chromium stainless steel and coils X7.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.8%, it is 90.3% that high carbon and chromium stainless steel is coiled X7 lumber recovery, hands overGoods hardness is 230HB, and reduction of area is 28%.
Embodiment 8
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, described softening moving backFire holding temperature is 830 DEG C, obtains high carbon and chromium stainless steel and coils X8.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.8%, it is 91.3% that high carbon and chromium stainless steel is coiled X8 lumber recovery, hands overGoods hardness is 245HB, and reduction of area is 20%.
Embodiment 9
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, described nodularization is moved backFire holding temperature is 690 DEG C. Obtain high carbon and chromium stainless steel and coil X9.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, seldom tail is straight on the head split in appearancePhenomenon, rolling lumber recovery is 91.8%, it is 91.3% that high carbon and chromium stainless steel is coiled X9 lumber recovery, hands overGoods hardness is 248HB, and reduction of area is 22%.
Comparative example 1
The method of this comparative example for illustrating that the production high carbon and chromium stainless steel of reference is coiled.
Produce high carbon and chromium stainless steel according to the method for embodiment 1 and coil, different, described pre-finish rollingMachine entrance rolled piece temperature is 900 DEG C, obtains high carbon and chromium stainless steel and coils D1.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, be prone to and straight on the head split showing of tailResemble, rolling lumber recovery is 80.0%, and it is 79.5% that high carbon and chromium stainless steel is coiled D1 lumber recovery, deliveryHardness is 230HB, and reduction of area is 28%.
Comparative example 2
The method of this comparative example for illustrating that the production high carbon and chromium stainless steel of reference is coiled.
Produce high carbon and chromium stainless steel according to the method for comparative example 1 and coil, different, finishing mill entranceRolled piece temperature is 1000 DEG C, obtains high carbon and chromium stainless steel and coils D2.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, be prone to and straight on the head split showing of tailResemble, rolling lumber recovery is 82.3%, and it is 81.5% that high carbon and chromium stainless steel is coiled D2 lumber recovery, deliveryHardness is 230HB, and percentage elongation is 28%.
Comparative example 3
Produce high carbon and chromium stainless steel according to the method for comparative example 1 and coil, different, described pre-finish rollingMachine entrance rolled piece temperature is 960 DEG C, and finishing mill entrance rolled piece temperature is 1020 DEG C, obtains high carbon and chromium notRust steel disk volume D3.
Produce continuously 300 volume high carbon and chromium stainless steels and coil, in the operation of rolling, be prone to and straight on the head split showing of tailResemble, rolling lumber recovery is 85.6%, and it is 84.5% that high carbon and chromium stainless steel is coiled D3 lumber recovery, deliveryHardness is 230HB, and percentage elongation is 28%.
As can be seen here, adopt method of the present invention make high carbon and chromium stainless steel disc rolling lumber recovery processed higher than90%, high carbon and chromium stainless steel disc volume lumber recovery is higher than 90%. On the other hand, its mechanical property can expireFoot user coils the requirement of cold-drawn performance to high carbon and chromium stainless steel, cold-drawn lumber recovery is higher.
More than describe the preferred embodiment of the present invention in detail, still, the present invention is not limited to above-mentioned realityExecute the detail in mode, within the scope of technical conceive of the present invention, can be to technical side of the present inventionCase is carried out multiple simple variant, and these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technology spy described in above-mentioned detailed description of the inventionLevy, in reconcilable situation, can combine by any suitable mode. For fear of needn'tThe repetition of wanting, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as itsWithout prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. the production method that high carbon and chromium stainless steel is coiled, coils with described high carbon and chromium stainless steelGross mass be benchmark, the content of described carbon is 0.9-1 % by weight, the content of described chromium is that 17-19 is heavyAmount %, the method comprise by high carbon and chromium stainless steel coil that blank heats successively, rolling, batch,Cooling, annealing, described rolling comprise roughing, in roll, pre-finish rolling and finish rolling, it is characterized in that, described inThe entrance rolled piece temperature of pre-finish rolling is 1000 ± 10 DEG C, and the entrance rolled piece temperature of finish rolling is 1100 ± 10 DEG C.
2. method according to claim 1, wherein, in the operation of rolling, workpiece front end surfaceWith the temperature difference at center be 20-40 DEG C, under the state that the operation of rolling is closed at high pressure water descaling device, carry out.
3. method according to claim 1 and 2, wherein, in the entrance rolled piece temperature difference of rolling notExceed 50 DEG C.
4. method according to claim 1, wherein, described in add thermal recovery walking beam heating furnace,Burner hearth absolute pressure is 2-4Pa, and air-fuel ratio is 8-10:1.
5. method according to claim 4, wherein, the preheating section of heating furnace, heating one section,The temperature that heats two sections and soaking zone be respectively 620-680 DEG C, 880-920 DEG C, 1000-1150 DEG C and1160-1200 DEG C, the tapping temperature of blank is 1160-1200 DEG C.
6. method according to claim 1, wherein, described in temperature >=1050 DEG C of batching.
7. method according to claim 1, wherein, described cooling employing Stanermo wind-cooling linearSlow cooling technology, Stanermo wind-cooling linear roller table speed is 0.2-0.4m/s, goes out the temperature of Stanermo wind-cooling linearSpend >=600 DEG C, described Stanermo wind-cooling linear stay-warm case is in closed condition.
8. method according to claim 1, wherein, described annealing comprises carry out successively softeningAnnealing process and spheroidizing process, and described annealing adopts N2The bell furnace of protection carries out, softeningThe holding temperature of annealing process is 850 ± 10 DEG C, and temperature retention time is 6-8h; The insulation of spheroidizing processTemperature is 710 ± 10 DEG C, and temperature retention time is 2-4h.
9. method according to claim 1, wherein, described high carbon and chromium stainless steel is coiled blankFor 200mm*200mm*6000mm die casting square billet.
10. method according to claim 1, wherein, described high carbon and chromium stainless steel is coiled as heightCarbon high chromium martensitic stainless steel is coiled.
11. methods according to claim 10, wherein, described high carbon and chromium stainless steel coil intoThe hot rolling of 95Cr18 series is coiled.
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| CN108193028B (en) * | 2016-08-29 | 2020-07-03 | 浙江雷奥重工机械有限公司 | Processing technology for bicycle frame strip steel |
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Family Cites Families (7)
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| JP2781285B2 (en) * | 1991-03-18 | 1998-07-30 | 川崎製鉄株式会社 | Manufacturing method of stainless clad steel sheet |
| CN102162075A (en) * | 2010-02-23 | 2011-08-24 | 宝山钢铁股份有限公司 | Austenitic stainless steel with excellent polishing performance and manufacturing method thereof |
| CN102277532A (en) * | 2011-08-19 | 2011-12-14 | 广东金型重工有限公司 | Cold working mold steel Cr8 and production method thereof |
| CN102766816B (en) * | 2012-07-06 | 2013-09-25 | 常熟市长江不锈钢材料有限公司 | 80Cr14MoV high-carbon high-chromium martensite stainless steel band and preparation method thereof |
| CN103352171B (en) * | 2013-07-12 | 2016-12-28 | 抚顺特殊钢股份有限公司 | A kind of milling method of high-alloy steel D2 |
| CN103555913B (en) * | 2013-11-07 | 2015-03-25 | 首钢总公司 | Control method for improving plasticity of bearing steel wire rod |
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