CN104846168A - Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process - Google Patents
Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process Download PDFInfo
- Publication number
- CN104846168A CN104846168A CN201510308652.6A CN201510308652A CN104846168A CN 104846168 A CN104846168 A CN 104846168A CN 201510308652 A CN201510308652 A CN 201510308652A CN 104846168 A CN104846168 A CN 104846168A
- Authority
- CN
- China
- Prior art keywords
- continuous
- tank
- strand
- quenching
- casting blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses continuous casting blank on-line continuous quenching equipment and a continuous casting blank on-line continuous quenching process for quenching a casting blank on the production line of continuous casting equipment. The continuous casting blank on-line continuous quenching equipment comprises a quenching roller way, a water tank and a water inlet pipe, wherein the water tank is arranged along the drawing direction of the casting blank; the quenching roller way is positioned in the water tank; the water inlet pipe is communicated with the water tank; two ends of the water tank are both provided with end part sealing parts, the two end part sealing parts are respectively provided with a casting blank inlet hole and a casting blank outlet hole, and the end part sealing parts are closely attached to the outer surface of the casting blank. The continuous casting blank on-line continuous quenching equipment disclosed by the invention can be used for fast and forcibly reducing the temperature of the surface of the casting blank to be less than 600 DEG C before the continuous casting blank is cut and carrying out one-line continuous quenching on the surface of the casting blank by arranging the water tank on a feeding roller positioned between a tension leveler and a flame cutting machine, can well complete the quenching process of the casting blank which needs to be treated in a continuous casting process and has the characteristics of small investment, simple structure, convenient later maintenance and high practicability.
Description
Technical field
The present invention relates to metal freezing and continuous casting technical field, particularly a kind of continuous-cast blank on-line continuous quenching apparatus and technique thereof.
Background technology
The surface quality of Rolling production stocking depends on quantity and the form of rolled piece grain boundary precipitate in the hot rolling.Precipitate can hinder crystal boundary to move in materials hot deformation process, thus produce mechanical stress in these positions, just crackle is there will be when the mechanical stress of these positions oversteps the extreme limit stress, in the scope of 650-1000 DEG C of the temperature of hot rolling stocking, in this temperature range, the N precipitates such as such as AlN, BN, VCN and NbCN can the serious ductility reducing metal.
In order to avoid the generation of above-mentioned phenomenon, hard surfacing is adopted to be the very safe and measure flexibly of one.After hard surfacing, the temperature of casting billet surface can be cooled to less than 300 DEG C.Micrographic test shows, and after quench treatment, can form fine and closely woven tempered martensite structure layer at the casting billet surface of about 20mm.Compared with the interior tissue without cooling process, this Rotating fields on surface wants much meticulous.Cutting machine by quenching box through overdoing at strand, entering in the process of ejection roller way, the heat that the Malpighian layer that its surface is formed because of cooling can be gone out by strand center conductive carries out tempering.Through such process, the form compact and stable structure of one deck just can be formed at strand extexine.Through such process, strand after the heating, can form good grain-size, and only has a small amount of AlN to separate out in grain boundary.Thus avoid in the hot rolling, because AlN separates out the remarkable reduction of the austenite crystal border ductility caused.
Some iron and steel enterprises take the rate of becoming a useful person in order to improve stocking, realize special steel heat and send, and it is desirable to carry out hard surfacing process to strand before heat is sent, even if those are to the steel grade of red brittleness sensitivity like this, after quench treatment, also can not have problems when heat is sent.After hard surfacing, some producers have substantially achieved 100% heat and have sent, and need not worry that casting condition and operating delay impact.
Application number be the Chinese patent of 201410355167.X disclose a kind of by strand slow cooling to the technique of carrying out during 500-600 DEG C quenching, the strand after quenching is heated to 170-200 DEG C and carries out insulation tempering.This patent is that after being rolled off the production line by continuously cast bloom, slow cooling is being quenched to 500-600 DEG C, can not realize strand press quenching and heat is sent.
Chinese patent 201420270663.0 discloses a kind of heat treatment quenching device, according to this patent, this device comprises cooling cylinder, tank, rising pipe and water inlet pipe, described rising pipe and water inlet pipe lay respectively at tank both sides, described water inlet pipe one end is communicated with cooling cylinder, the other end of water inlet pipe stretches into bottom of gullet, described rising pipe one end is communicated with cooling cylinder, the rising pipe the other end is arranged on tank side surface upper part, described rising pipe is corresponding with the junction, side of tank is provided with the posticum that rising pipe can be made to be communicated with tank, flow deflector is provided with near water inlet pipe place in described tank, described flow deflector is provided with some pod apertures.This heat treatment quenching device adopts condenser, makes water coolant to carry out circulating cooling, adopts multitube water inlet and water outlet, and in tank, sets up the flow deflector with pod apertures, add the fluctuation of current, add cooling efficiency, improve cooling performance.But this quenching heat treatment device processes mainly for line lower component or part, cannot be used for continuous casting production process.
Chinese patent 201320366648.1 discloses a kind of slab surface quenching device, according to this patent, between the conveying roller that continuous casting cutting rollgang is adjacent, arranges upper and lower two groups of set of nozzles.Microalloy steel grade can be gone out the high temperature steel slab surface temperature after fan-shaped section and be down to less than 600 DEG C fast by this device, nitride or the carbonitride of the microalloy elements such as Nb, V, Ti, Al, B that effective suppression is thick are separated out at austenite grain boundary, thus avoid micro-alloyed steel heat to send the generation of micro cracks on surface of steel plate after rolling.But the mode of this spray quench easily causes casting billet surface spray uneven thus cause casting billet surface quenching effect inconsistent.Spray state labile, slab quality is unstable, and practicality is poor.
Chinese patent 201420486096.2 discloses a kind of top spray device for slab direct quenching device, and according to this patent, this device installation, in the entrance of quenching refrigerating device and exit, comprises water inlet pipe, cooling manifold, switch-valve and nozzle; Can improve the homogeneity of steel billet temperature and performance, drainage effect is good, can eliminate the backflow phenomena of surface of steel plate, the water coolant of direct quenching cooling apparatus entrance can be removed clean.This quench treatment mode is all steel rolling region quenching heat treatment device, can not carry out quench treatment, cannot reach the effect of continuously cast bloom quench treatment to continuously cast bloom.
Chinese patent 201420143456.9 discloses a kind of spray quenching device, according to this patent, this device is used for carrying out quench treatment to thrust wheel surface, it comprises spray chamber, the inwall of described spray chamber is provided with nozzle, in the bottom of described spray chamber, base plate is housed, described base plate contacts with the inwall of described spray chamber, forms sealed environment.Nozzle is arranged in array, outside described spray chamber, be arranged with sprayed tank, is connected with described nozzle, and described nozzle controls quantity for spray and spraying rate by PLC.The outer quenching heat treatment of line, mainly for some parts and part, cannot be applied in casting process.
Summary of the invention
The shortcoming of prior art in view of the above, the invention provides a kind of continuous-cast blank on-line continuous quenching apparatus and technique thereof, object is effectively to suppress the nitride of the microalloy elements such as thick Nb, V, Ti, Al, B or carbonitride to separate out at austenite grain boundary, thus avoids micro-alloyed steel heat to send the generation of micro cracks on surface of steel plate after rolling.
For achieving the above object and other relevant objects, the invention provides following technical scheme:
A kind of continuous-cast blank on-line continuous quenching apparatus, on continuous casting installation for casting production line, strand is quenched, comprise quenching roller-way, tank and water inlet pipe, described tank is arranged along strand throwing direction, and described quenching roller-way is positioned at tank, and described water inlet pipe is communicated with tank, the two ends of described tank are provided with end seal, two end seals are respectively equipped with strand inlet hole and strand portals, in strand continuous quenching process, described end seal and strand intimate are fitted.
Adopt said structure, continuous casting installation for casting line arranges sink structure, strand on line roller-way transmit process in submergence quench in the sink, uniform quenching, ensure the continuity of producing, and avoid micro-alloyed steel heat to send the generation of micro cracks on surface of steel plate after rolling; The roller-way that wherein quenches is the roller-way that continuous casting installation for casting carries, and quenching roller-way in tank is concordant with the roller-way of outside.The length of strand will be longer than tank length, and strand carries out continuous quenching in transport process, and end seal and casting billet surface are fitted, in anti-water stopping trough, water flows out.
It is front to the quick forced cooling of casting billet surface that continuous-cast blank carries out cutting, temperature is reduced to less than 600 DEG C fast, cut sending on roller between machine at withdrawal straightening machine and fire and a tank is set, on-line continuous quenching is carried out to casting billet surface, nitride or the carbonitride of the microalloy elements such as Nb, V, Ti, Al, B that effective suppression is thick are separated out at austenite grain boundary, thus avoid micro-alloyed steel heat to send the generation of micro cracks on surface of steel plate after rolling.
As preferably: described end seal is made up of heat-resisting soft material, the size that described strand inlet hole and strand portal be the 0.8-0.9 in strand cross section doubly.Have elastic deformation just can fit tightly, strand inlet hole and strand go out 0.8-0.9 times that hole width is strand width, and the 0.8-0.9 being highly strand height doubly, can change according to different size strand.
As preferably: described end seal is made up of high-temperature resistant rubber or soft metal.
As preferably: be connected with water jet standpipe above described water inlet pipe, described water jet standpipe is positioned at above tank, arrange along tank length direction, and parallel with tank, water jet standpipe offering water spray seam or spout hole; The cuboid-type that described tank is uncovered above being, the length of described water jet standpipe is equal with tank length.
After strand enters tank, water inlet pipe valve opening, carry out spray quenching process to strand, strand runs continuously in tank, and water sprays continuously on strand, and whole strand is surrounded completely by water in tank, thus reaches the object of soaking quenching.Strand is effluent trough after quenching, carries out Length-fixing cutting and ejection.
As preferably: described bottom of gullet and both sides are provided with water inlet pipe.Flooding quantity can be increased.
As preferably: described bottom of gullet is provided with scum pipe, is provided with iron sheet slag collection bucket below scum pipe.
After equipment runs for some time, open scum pipe, in flushable tank, oxide compound iron sheet slag is to collection bucket.
As preferably: described scum pipe is provided with valve, bottom described iron sheet slag collection bucket and sidewall offer leaking hole.
As preferably: described water inlet pipe is provided with variable valve, is provided with liquidometer in described tank, described liquidometer and variable valve are all connected with the Controlling System of continuous casting installation for casting.
As preferably: described tank is arranged on the cutting machine front of continuous casting installation for casting.
The present invention provides a kind of quenching technology of continuous-cast blank on-line continuous quenching apparatus simultaneously, described quenching apparatus comprises quenching roller-way, tank and water inlet pipe, described tank is arranged along strand throwing direction, described quenching roller-way is positioned at tank, described water inlet pipe is communicated with tank, the two ends of described tank are provided with end seal, two end seals are respectively equipped with strand inlet hole and strand portals;
Described quenching technology comprises the following steps:
Strand is sent to tank by the roller-way of continuous casting installation for casting; Until strand after strand inlet hole enters tank, unlatching water inlet pipe supplies water and quenches in tank, and strand carries out quench treatment continuously in tank; Then Length-fixing cutting and ejection are carried out to the strand of effluent trough; In strand continuous quenching process, strand outside surface and end seal are fitted tightly, in case water flows out in water stopping trough; Control the travelling speed of quenching roller-way, guarantee strand by the complete submergence of water, fully quenches in tank.
As preferably: arrange liquid level detection gauge in described tank, water inlet pipe arranges variable valve, liquid level detection gauge is all connected with Controlling System with variable valve, and when liquid level detection gauge detects water level lower than setting liquid level, Controlling System is opened variable valve and carried out moisturizing.
As preferably: ensure that in quenching process in tank, the water surface exceeds strand more than upper surface 50mm, the slewing rate controlling quenching roller-way ensures that strand cool time in tank is 3-5 minute.
As mentioned above, the invention has the beneficial effects as follows:
1, continuous casting press quenching apparatus design structure is simple, operation steps simple, can realize the full-automatic press quenching process of strand, and safeguard that cleaning is convenient, ensure the homogeneity of casting billet surface quenching, practicality is stronger.Can real-time selection quench treatment or non-quench treatment.
2, microalloy steel grade is gone out the high temperature steel slab surface temperature after fan-shaped section and be down to less than 600 DEG C fast, nitride or the carbonitride of the microalloy elements such as Nb, V, Ti, Al, B that effective suppression is thick are separated out at austenite grain boundary, thus avoid micro-alloyed steel heat to send the generation of micro cracks on surface of steel plate after rolling.
3, water saving, effectively collects oxide compound iron sheet slag.
Accompanying drawing explanation
Fig. 1 is the structural representation of continuous-cast blank press quenching equipment in the present invention;
Fig. 2 is the vertical view of continuous-cast blank press quenching equipment in the present invention;
Fig. 3 is the side-view of continuous-cast blank press quenching equipment in the present invention;
Fig. 4 is process flow sheet of the present invention.
Piece mark explanation
1 continuous casting installation for casting
2 tanks
3 water inlet pipes
4 quenching roller-ways
5 water jet standpipes
6 scum pipes
7 end seals
9 strands
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification sheets can understand other advantages of the present invention and effect easily.
As shown in Figure 1 to Figure 3, the invention provides a kind of continuous-cast blank on-line continuous quenching apparatus, this quenching apparatus is arranged on continuous casting installation for casting 1 production line, comprise quenching roller-way 4, tank 2 and water inlet pipe 3, tank 2 is arranged on continuous casting installation for casting 1 along strand 9 throwing direction, tank 2 is between the withdrawal straightening machine and live wire cutting machine of continuous casting installation for casting 1, quenching roller-way 4 is positioned at tank 2, water inlet pipe 3 is communicated with tank 2, the rear and front end of tank 2 is respectively arranged with end seal 7, end seal 7 is made up of resistant to elevated temperatures soft deformable materials, make for high-temperature resistant rubber or soft metal in this example, former and later two end seals 7 offer strand inlet hole respectively and strand portals, the size that strand inlet hole and strand portal is 0.8-0.9 times of strand 9 size, in strand 9 to portal the process of carrying out quenching through strand inlet hole and strand, end seal 7 and strand 9 outside surface are fitted and anti-sealing flows out from tank 2.Water inlet pipe 3 also can be located at bottom the tank 2 or both sides of length direction.
In this example, tank 2 is the uncovered cuboid in top, and tank 2 is highly greater than quenching roller-way 4 diameter and maximum strand 9 thickness sum, and tank 2 width is wider than the width of quenching roller-way 4.Top in the middle part of tank 2 is located at by water inlet pipe 3, and be connected with water jet standpipe 5 above water inlet pipe 3, water jet standpipe 5 is positioned at above tank 2, arranges along tank 2 length direction, and parallel with tank 2, water jet standpipe 5 offers water spray seam or spout hole.The length of water jet standpipe 5 is equal with tank 2 length.
For the ease of cleaning and collection iron scale, tank 2 bottom centre is provided with scum pipe 6, is provided with iron sheet slag collection bucket (not shown) below scum pipe 6.Scum pipe 6 is provided with manually-operated gate, bottom iron sheet slag collection bucket, offers leaking hole with sidewall.
Water inlet pipe 3 is provided with variable valve, is provided with liquidometer in tank 2, liquidometer and variable valve are all connected with the Controlling System of continuous casting installation for casting 1.Switch door-plate is automatic or manual lifting gate.By liquid level in liquidometer Real-Time Monitoring tank 2, when water level is lower than set(ting)value, carry out moisturizing, ensure liquid level in tank 2.
As shown in Figure 4: the present invention provides a kind of quenching technology of continuous-cast blank on-line continuous quenching apparatus simultaneously, comprise above-mentioned continuous-cast blank press quenching equipment, its processing step is as follows:
Strand 9 is sent to tank 2 by the roller-way of continuous casting installation for casting; Enter after tank 2 until strand through strand inlet hole, unlatching water inlet pipe 3 supplies water and carries out spray quenching in tank 2, strand 9 runs continuously in tank 2, when strand portals continually by strand inlet hole and strand, strand 9 outside surface and end seal are fitted tightly, in case water flows out in water stopping trough 2, ensures strand 9 in tank 2 by the complete submergence of water, in tank 2, the water surface exceeds strand more than upper surface 50mm, abundant water-bath quenching.Strand 9 after continuous quenching to be portalled by strand through quenching roller-way and sends tank 2; Then Length-fixing cutting and ejection is carried out; Can arrange liquid level detection gauge in tank 2, water inlet pipe 3 arranges variable valve, and liquid level detection gauge is all connected with Controlling System with variable valve, and when liquid level detection gauge detects water level lower than setting liquid level, Controlling System is opened variable valve and carried out moisturizing.The slewing rate controlling quenching roller-way 4 ensures that strand cool time in tank 2 is 3-5 minute.The oxide scale slag that quenching produces can be discharged by scum pipe 6, iron sheet slag collection bucket can be established to collect down.
It should be noted that, any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a continuous-cast blank on-line continuous quenching apparatus, on continuous casting installation for casting production line, strand is quenched, it is characterized in that: comprise quenching roller-way, tank and water inlet pipe, described tank is arranged along strand throwing direction, described quenching roller-way is positioned at tank, described water inlet pipe is communicated with tank, the two ends of described tank are provided with end seal, two end seals are respectively equipped with strand inlet hole and strand portals, in strand continuous quenching process, described end seal and strand intimate are fitted.
2. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 1, is characterized in that: described end seal is made up of heat-resisting soft material, and the size that described strand inlet hole and strand portal is 0.8-0.9 times of strand cross section.
3. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 2, is characterized in that: described end seal is made up of high-temperature resistant rubber or soft metal.
4. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 1, it is characterized in that: be connected with water jet standpipe above described water inlet pipe, described water jet standpipe is positioned at above tank, arranges along tank length direction, and parallel with tank, water jet standpipe offers water spray seam or spout hole; The cuboid-type that described tank is uncovered above being, the length of described water jet standpipe is equal with tank length.
5. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 1, is characterized in that: described bottom of gullet and both sides are provided with water inlet pipe; Described bottom of gullet is provided with scum pipe, is provided with iron sheet slag collection bucket below scum pipe.
6. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 1, it is characterized in that: described water inlet pipe is provided with variable valve, be provided with liquidometer in described tank, described liquidometer and variable valve are all connected with the Controlling System of continuous casting installation for casting.
7. a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 1, is characterized in that: described tank is arranged on the cutting machine front of continuous casting installation for casting.
8. the quenching technology of a continuous-cast blank on-line continuous quenching apparatus, it is characterized in that: described quenching apparatus comprises quenching roller-way, tank and water inlet pipe, described tank is arranged along strand throwing direction, described quenching roller-way is positioned at tank, described water inlet pipe is communicated with tank, the two ends of described tank are provided with end seal, two end seals are respectively equipped with strand inlet hole and strand portals;
Described quenching technology comprises the following steps:
Strand is sent to tank by the roller-way of continuous casting installation for casting; Until strand after strand inlet hole enters tank, unlatching water inlet pipe supplies water and quenches in tank, and strand carries out quench treatment continuously in tank; Then Length-fixing cutting and ejection are carried out to the strand of effluent trough; In strand continuous quenching process, strand outside surface and end seal are fitted tightly, in case water flows out in water stopping trough; Control the travelling speed of quenching roller-way, guarantee strand by the complete submergence of water, fully quenches in tank.
9. the quenching technology of a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 8, it is characterized in that: in described tank, liquid level detection gauge is set, water inlet pipe arranges variable valve, liquid level detection gauge is all connected with Controlling System with variable valve, when liquid level detection gauge detects water level lower than setting liquid level, Controlling System is opened variable valve and is carried out moisturizing.
10. the quenching technology of a kind of continuous-cast blank on-line continuous quenching apparatus according to claim 9, is characterized in that: in quenching process, ensure that in tank, the water surface exceeds strand more than upper surface 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308652.6A CN104846168A (en) | 2015-06-08 | 2015-06-08 | Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308652.6A CN104846168A (en) | 2015-06-08 | 2015-06-08 | Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104846168A true CN104846168A (en) | 2015-08-19 |
Family
ID=53846148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510308652.6A Pending CN104846168A (en) | 2015-06-08 | 2015-06-08 | Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104846168A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236915A (en) * | 2017-05-31 | 2017-10-10 | 广西南南铝加工有限公司 | A kind of Aluminum alloy extrusion material press quenching device |
| CN109022717A (en) * | 2018-08-21 | 2018-12-18 | 石家庄钢铁有限责任公司 | A kind of online continuous casting billet surface peening quenching treatment change system and technique |
-
2015
- 2015-06-08 CN CN201510308652.6A patent/CN104846168A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236915A (en) * | 2017-05-31 | 2017-10-10 | 广西南南铝加工有限公司 | A kind of Aluminum alloy extrusion material press quenching device |
| CN109022717A (en) * | 2018-08-21 | 2018-12-18 | 石家庄钢铁有限责任公司 | A kind of online continuous casting billet surface peening quenching treatment change system and technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100443201C (en) | Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate | |
| CN101851700B (en) | Online water cooling method and equipment | |
| CN102909333B (en) | Method and device for deceasing transverse corner cracks of casting blanks | |
| CN204690057U (en) | A kind of continuous-cast blank press quenching equipment | |
| CN110802205B (en) | Control method and device for austenite grain size of continuous casting slab and product | |
| CN100566885C (en) | The production method of oxygen-free high conductivity type copper strip | |
| CN110860662A (en) | Method and device for inhibiting austenite grain size of continuous casting slab corner | |
| CN104846168A (en) | Continuous casting blank on-line continuous quenching equipment and continuous casting blank on-line continuous quenching process | |
| CN105268750B (en) | Cut deal cooling system quick shading device, masking system and screen method end to end | |
| CN105170665A (en) | Method for removing iron oxide scale from surface of strip steel efficiently | |
| CN110695328A (en) | Quick cooling device for reducing generation rate of cracks on surface of hot-delivery casting blank | |
| CN103302262A (en) | Continuous casting plate blank surface quenching technology and used device | |
| CN104846166A (en) | On-line continuous-casting billet quenching equipment and process thereof | |
| CN204690060U (en) | A kind of continuous-cast blank on-line continuous quenching apparatus | |
| CN203284429U (en) | Continuous casting slab surface quenching device | |
| CN102433419B (en) | Water-through quenching cooling device and method capable of realizing rapid cooling through slit water injection | |
| CN105618492A (en) | Post-rolling fast cooling system for on-line solution treatment of steel plates | |
| CN109022717A (en) | A kind of online continuous casting billet surface peening quenching treatment change system and technique | |
| CN110756756B (en) | Method for reducing generation rate of cracks on surface of hot-delivery casting blank | |
| CN107790650B (en) | A kind of micro alloyed steel directly fills the control method for rolling plate crackle | |
| US3615926A (en) | Quench system | |
| JP2000237858A (en) | Continuous casting method | |
| CN201447494U (en) | Water spray system of seamless steel tube high-temperature fast quenching device | |
| CN106807908A (en) | A kind of Novel connection casting machine | |
| JP6295387B1 (en) | Controlled cooling method for hot-rolled steel bars |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |
|
| WD01 | Invention patent application deemed withdrawn after publication |