CN106868254A - A kind of method for reducing steel corrosion speed - Google Patents
A kind of method for reducing steel corrosion speed Download PDFInfo
- Publication number
- CN106868254A CN106868254A CN201710078256.8A CN201710078256A CN106868254A CN 106868254 A CN106868254 A CN 106868254A CN 201710078256 A CN201710078256 A CN 201710078256A CN 106868254 A CN106868254 A CN 106868254A
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- Prior art keywords
- steel
- corrosion
- anode
- reducing
- negative electrode
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/12—Electrodes characterised by the material
- C23F13/14—Material for sacrificial anodes
Abstract
The invention belongs to technical field of ferrous metallurgy, in particular it relates to a kind of method for reducing steel corrosion speed.The present invention provides a kind of method for reducing steel corrosion speed.The main control including inclusion content in melting steel size, the cleaning of steel surface and prevent steel from getting rusty the measure of this three aspect using the cathode protection method of sacrificial anode in steel inventory area.The present invention reaches the method for reducing corrosion electric current density by the cathode size in the method reduction corrosion galvanic cell for refining the field trash inside steel so that the rustless property of steel surface and inside is obviously improved.Also, the present invention washes the harmful ion that can destroy steel passivation layer in the case where this is not substantially added to.The present invention is used as anode by the stronger metal of reproducibility, reaches sacrificial anode to protect the effect of negative electrode steel, moreover it is possible to which making the corrosion rate of steel further reduces.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, in particular it relates to a kind of side for reducing steel corrosion speed
Method.
Background technology
The corrosion problem of steel is the problem that iron and steel enterprise has a headache very much, and general steel understand stock 5~20 days after producing
Client can be just sent to, due to the environment of moist, many dust in steel inside, steel be often occurred and is not sent to client, steel surface also
Situation about just having had rusty stains, this has had a strong impact on the surface quality of steel, to follow-up cold rolling grade deep processing operation band
Carry out problems, and corrosion have impact on the external aesthetic property of steel, cause client poor to the first impression of steel, compared to not
The steel for getting rusty, the price of the steel that get rusty can reduce by 50~100 yuan.
Rust-proofing method main at present is to coat one layer of antirust coat in steel surface, and the method workload is big, high cost,
For mass produce iron and steel enterprise and do not apply to.
The content of the invention
For problem above, the present invention provides a kind of method for reducing steel corrosion speed.Mainly include being mingled with molten steel
The control of thing size, the cleaning of steel surface and steel are prevented using the cathode protection method of sacrificial anode in steel inventory area
The measure of this three aspect of getting rusty.
Technical scheme is specific as follows：
The method for reducing steel corrosion speed of the invention, comprises the following steps：
1) Molten Steel Cleanliness is controlled：The strong deoxidation of aluminum steel is used during liquid steel refining, acid-soluble aluminum content is in controlling molten steel
0.02wt%~0.04wt%；Refining latter stage feeding magnesium manganeisen line, feed quantity is 0.4~0.8kg/ tons of steel, soft blow 8~15
Minute；
2) steel are cleaned：In the most latter stage of roller repairing process, cleaned using the new water supplemented in steel rolling mill and roll rear steel
The chlorion on surface；
3) steel storage：On steel storage area support, negative electrode steel are protected by sacrificial anode.
According to method of the present invention, wherein preferably, step 1) the magnesium manganeisen line composition is：Mg：4wt%
~10wt%, Mn：20wt%~90wt%, Fe are surplus.
According to method of the present invention, wherein, step 1) using the dissolved oxygen in the Strong oxdiative ability reduction molten steel of aluminium
Content is to≤3ppm.
According to method of the present invention, wherein preferably, step 2) the new water consumption is 100~1000kg/ tons of steel.
According to method of the present invention, wherein, step 2) new water can be sprayed onto by steel surface by high pressure nozzle.
According to method of the present invention, wherein, step 3) method of the sacrificial anode is in steel storage area support
The metal that upper uniform connection reproducibility is better than iron is used as anode, and steel are used as negative electrode.The reproducibility is better than the metal of iron
Quality is store steel gross mass 0.01%~0.1%.The metal that the reproducibility is better than iron can select to be magnesium, aluminum and zinc
In one or more.
Advantages of the present invention is as follows：
According to the technology that the present invention is provided, by the method reduction corrosion galvanic cell for refining the field trash inside steel
Cathode size, and then reach reduce corrosion electric current density method so that the rustless property of steel surface and inside has bright
Aobvious lifting.Also, the present invention washes the harmful ion that can destroy steel passivation layer in the case where this is not substantially added to.This
Invention is used as anode by the stronger metal of reproducibility such as uniform connection magnesium, aluminium, zinc on steel storage area support, reaches sacrificial
Domestic animal anode protects the effect of negative electrode steel, moreover it is possible to which making the corrosion rate of steel further reduces.
Brief description of the drawings
Fig. 1 recycles the tupe schematic diagram during water to water for steel mill.
Specific embodiment
The present invention provides a kind of method for reducing steel corrosion speed.Pressed from both sides in main cleaning, molten steel including steel surface
The control of debris quantity and size, steel inventory area prevented using the cathode protection method of sacrificial anode steel get rusty three aspect
Measure.
(1) the pure interior degree of steel has obvious influence, steel surface meeting in wet environment on the corrosion resisting property of steel
Covered by one layer of electrolyte moisture film, electrochemical corrosion occurs, its detailed process is：Steel surface can cover one in wet environment
Layer electrolyte moisture film, and steel contain iron and field trash in itself, because iron is different with the electrode potential of field trash, iron is used as sun
Pole, field trash form many micro cells as negative electrode.In anode region, iron is oxidized into Fe2+Ion enters moisture film；In negative electrode
Area, the oxygen being dissolved in moisture film is reduced to OH-Ion.Then both combine the water insoluble Fe (OH) of generation2, and further oxygen
It is loose flaky rufous iron rust Fe (OH) to be melted into3。
Wish the inclusion content reduced in molten steel as far as possible, and reduction inclusion size for this as far as possible.Due to making
The amount of inclusions, size reduction for negative electrode, negative electrode quantity, size in its electrochemical corrosion can be reduced accordingly, steel electrification
The phenomenon of the small negative electrode of big anode can be formed in corrosion process, corrosion electric current density can be reduced, can drop electrochemical corrosion speed
It is low.
The inclusion content in molten steel, and reduction inclusion size are reduced for this present invention, to reach reduction as far as possible
The purpose of steel corrosion speed.Its concrete measure is：
Control Molten Steel Cleanliness, uses the strong deoxidation of aluminum steel during liquid steel refining, acid-soluble aluminum content is in controlling molten steel
0.02wt%~0.04wt%, the dissolved oxygen content reduced in molten steel of being tried one's best using the Strong oxdiative ability of aluminium to≤3ppm, to drop
The growing amount of oxide during low molten steel solidification, reaches the purpose for reducing inclusion content in melting steel content.Refining latter stage feeding magnesium
Manganeisen line, feed quantity is 0.4~0.8kg/ tons of steel, and magnesium manganeisen line composition is：Mg：4wt%~10wt%, Mn:
20wt%~90wt%, Fe are surplus.After feeding magnesium manganeisen line, then ladle is transported into continuous casting work by soft blow 8~15 minutes
Position carries out the operation such as follow-up continuous casting, to consider the increasing of magnesium manganeisen line in refining process in control molten steel when Mn contents
Manganese effect.
Refining latter stage feeding magnesium manganeisen line is the effect that inclusion size is reduced to reach, and magnesium manganeisen line is fed
After entering in molten steel, the Al in Mg and molten steel in magnesium manganeisen2O3It is mingled with and reacts：
Mg+Al2O3→Al+MgO ①
By reaction 1. Al2O3It is mingled with and is converted into MgO and is mingled with, because MgO interparticle attraction is about Al2O3Between particle
The 1/10 of attraction, deoxidation products is difficult polymerization, can promote cluster shape Al2O3Field trash becomes tiny, disperse MgO field trashes,
Cluster shape Al2O3Inclusion size is general more than 20 μm, large-scale cluster shape Al2O3Inclusion size can even reach 100 μm with
On, MgO inclusion sizes are generally less than 6 μm, so reducing the mesh of inclusion size to reach by feeding magnesium manganeisen line
's.It is negative electrode in corrosion process because the corrosion potential of field trash is higher than metallic matrix.Reducing inclusion size makes the moon
Pole diminishes, and anode becomes big, and in the case of the corrosion current identical in corrosion process, corrosion electric current density reduction makes corrosion speed
Rate reduction.Additionally, inclusion distribution is uniform, whole metal is in approximately the same state, the generation of spot corrosion can be controlled.
(2) corrosion rate of steel can accelerate steel with the chlorion that steel local environment has close relationship, steel surface
The corrosion of material, its reason is that chlorion radius is smaller, can pass through the passivating film of steel surface, and occur instead on microcosmic with iron
Should, the destruction of the possibility or acceleration passivating film of the formation of material surface passivating film can be reduced, so as to promote local corrosion.
Steel mill carries out recycling for cooling water for saving water resource, just water can be recycled, half a year was to meeting in a year
All bled off, new water is reinstated again.
It is as shown in Figure 1 that steel mill recycles the tupe to water during water.
Because steel mill carries out that purification of water quality is sterilized using chloride, during multiple recycling, Cl-Can be enriched with,
Can be exceeded 10 times to tens times, during steel mill's rolling or roller repairing, steel surface has the residual water of part, due to water
The Cl of middle enriched-Ion, after moisture evaporation, Cl-Ion can remain in steel surface.Steel are stored in a humid environment
When, the chlorion of steel surface residual can greatly accelerate the corrosion rate of steel.
It is this present invention cleaning steel surface, the purpose of steel corrosion speed is reduced to reach, its concrete measure is：
The new water of steel rolling mill's supplement is not flowed into pond, but the chlorion of rear steel surface is rolled for cleaning, after rolling
In the most latter stage of cooling procedure, the water of steel finally contact is new water clean, that impurity content is few, and new water removes having for steel surface
Evil ion, reduces the harmful ion content on finished steel surface, improves corrosion resistance of steel energy, and new water has cleaned steel surface
Flowed into together with converging with other water after harmful ion in pond, recycled next time.
(3) storage area of steel is due to fixing position, and steel storage area support is steel, the intensive stacking of steel together,
And steel are conductive, are convenient to carry out antirust treatment using the cathode protection method of sacrificial anode.By in steel storage area support
The stronger metals of reproducibility such as upper connection magnesium, aluminium, zinc are used as anode, reach sacrificial anode to protect the purpose of negative electrode steel.
A kind of method of the reduction steel corrosion speed provided the present invention of below illustrating is described further.
Embodiment 1
(1) the reduction inclusion size tried one's best, because the amount of inclusions as negative electrode, size are reduced, its electrochemistry is rotten
Negative electrode quantity, size in erosion are reduced, and the phenomenon of the small negative electrode of big anode can be formed during corrosion of steel, can reduce corrosion current
Density, can make the reduction of electrochemical corrosion speed.
The amount of inclusions and size are reduced by controlling the method for Molten Steel Cleanliness.Aluminum steel is used during liquid steel refining
Strong deoxidation, acid-soluble aluminum content is 0.02wt% in controlling molten steel, the dissolving reduced in molten steel of being tried one's best using the Strong oxdiative ability of aluminium
Oxygen content reduces the growing amount of oxide during molten steel solidification to≤3ppm, and inclusion content in melting steel content is reduced to reach
Purpose.Refining latter stage feeding magnesium manganeisen line, feed quantity is 0.4kg/ tons of steel, and magnesium manganeisen line composition is：Mg：4wt%,
Mn：90wt%, Fe are surplus, and after feeding magnesium manganeisen line, then be transported into ladle after continuous casting station carries out by soft blow 8 minutes
Continuous continuous casting etc. is operated, and to consider the increasing manganese effect of magnesium manganeisen line in refining process in control molten steel when Mn contents.
Refining latter stage feeding magnesium manganeisen line is the effect that inclusion size is reduced to reach, and magnesium manganeisen line is fed
After entering in molten steel, the Al in Mg and molten steel in magnesium manganeisen2O3It is mingled with and reacts
Mg+Al2O3→Al+MgO ①
By reaction 1. Al2O3It is mingled with and is converted into MgO and is mingled with, because MgO interparticle attraction is about Al2O3Between particle
The 1/10 of attraction, deoxidation products is difficult polymerization, can promote cluster shape Al2O3Field trash becomes tiny, disperse MgO field trashes,
Cluster shape Al2O3Inclusion size is general more than 20 μm, large-scale cluster shape Al2O3Inclusion size can even reach 100 μm with
On, MgO inclusion sizes are generally less than 6 μm, so reducing the mesh of inclusion size to reach by feeding magnesium manganeisen line
's.
(2) during the new water supplemented in steel rolling mill of steel mill does not flow into cistern, but the chlorine of rear steel surface is rolled for cleaning
Ion, in the most latter stage of roller repairing process, the water of steel finally contact is new water clean, that impurity content is few, uses 1000kg/
The new water of ton steel removes the harmful ion of steel surface, and new water is sprayed onto on steel surface by high pressure nozzle, and new water rinses out steel
The chlorion on material surface, the harmful ion content for reducing finished steel surface, improve corrosion resistance of steel energy, and new water has cleaned steel
Flowed into together with converging with other water after the harmful ion on material surface in pond, recycled next time.
(3) anode is used as by the uniform connection zinc on steel storage area support, reaches sacrificial anode to protect negative electrode
The purpose of steel, the quality of zinc is store steel gross mass 0.01%.
After taking above measure, steel mill's production cost raises 8 yuan/ton, but the corrosion situation of steel surface has clear improvement,
Steel dispatch from the factory before non-corroding phenomenon, steel price improve 50 yuan/ton, have obvious economic benefit.
Embodiment 2
(2) the reduction inclusion size tried one's best, because the amount of inclusions as negative electrode, size are reduced, its electrochemistry is rotten
Negative electrode quantity, size in erosion are reduced, and the phenomenon of the small negative electrode of big anode can be formed during corrosion of steel, can reduce corrosion current
Density, can make the reduction of electrochemical corrosion speed.
The amount of inclusions and size are reduced by controlling the method for Molten Steel Cleanliness.Aluminum steel is used during liquid steel refining
Strong deoxidation, acid-soluble aluminum content is 0.04wt% in controlling molten steel, the dissolving reduced in molten steel of being tried one's best using the Strong oxdiative ability of aluminium
Oxygen content reduces the growing amount of oxide during molten steel solidification to≤3ppm, and inclusion content in melting steel content is reduced to reach
Purpose.Refining latter stage feeding magnesium manganeisen line, feed quantity is 0.8kg/ tons of steel, and magnesium manganeisen line composition is：Mg：
10wt%, Mn：20wt%, Fe are surplus, and after feeding magnesium manganeisen line, then ladle is transported into continuous casting by soft blow 8~15 minutes
Station carries out the operation such as follow-up continuous casting, and magnesium manganeisen line is considered when Mn contents in control molten steel in refining process
Increase manganese effect.
Refining latter stage feeding magnesium manganeisen line is the effect that inclusion size is reduced to reach, and magnesium manganeisen line is fed
After entering in molten steel, the Al in Mg and molten steel in magnesium manganeisen2O3It is mingled with and reacts
Mg+Al2O3→Al+MgO ①
By reaction 1. Al2O3It is mingled with and is converted into MgO and is mingled with, because MgO interparticle attraction is about Al2O3Between particle
The 1/10 of attraction, deoxidation products is difficult polymerization, can promote cluster shape Al2O3Field trash becomes tiny, disperse MgO field trashes,
Cluster shape Al2O3Inclusion size is general more than 20 μm, large-scale cluster shape Al2O3Inclusion size can even reach 100 μm with
On, MgO inclusion sizes are generally less than 6 μm, so reducing the mesh of inclusion size to reach by feeding magnesium manganeisen line
's.
(2) during the new water supplemented in steel rolling mill of steel mill does not flow into cistern, but the chlorine of rear steel surface is rolled for cleaning
Ion, in the most latter stage of roller repairing process, the water of steel finally contact is new water clean, that impurity content is few, uses 100kg/
The new water of ton steel removes the harmful ion of steel surface, and new water is sprayed onto on steel surface by high pressure nozzle, and new water rinses out steel
The chlorion on material surface, the harmful ion content for reducing finished steel surface, improve corrosion resistance of steel energy, and new water has cleaned steel
Flowed into together with converging with other water after the harmful ion on material surface in pond, recycled next time.
(3) anode is used as by the uniform connection magnesium metal on steel storage area support, reaches sacrificial anode to protect
The purpose of negative electrode steel, the quality of magnesium metal is store steel gross mass 0.001%.
After taking above measure, steel mill production cost raises 13 yuan/ton, but the corrosion situation of steel surface has and substantially changes
It is kind, steel dispatch from the factory before non-corroding phenomenon, steel price improves 60 yuan/ton, there is obvious economic benefit.
Certainly, the present invention can also have various embodiments, in the case of without departing substantially from spirit of the invention and its essence, be familiar with
Those skilled in the art can disclosure of the invention make various corresponding changes and deformation, but these it is corresponding change and
Deformation should all belong to the protection domain of appended claims of the invention.
Claims (8)
1. a kind of method for reducing steel corrosion speed, comprises the following steps：
1) Molten Steel Cleanliness is controlled：The strong deoxidation of aluminum steel is used during liquid steel refining, acid-soluble aluminum content is in controlling molten steel
0.02wt%~0.04wt%；Refining latter stage feeding magnesium manganeisen line, feed quantity is 0.4~0.8kg/ tons of steel, soft blow 8~15
Minute；
2) steel are cleaned：In the most latter stage of roller repairing process, cleaned using the new water supplemented in steel rolling mill and roll rear steel surface
Chlorion；
3) steel storage：On steel storage area support, negative electrode steel are protected by sacrificial anode.
2. method according to claim 1, it is characterised in that step 1) the magnesium manganeisen line composition is：Mg：
4wt%~10wt%, Mn：20wt%~90wt%, Fe are surplus.
3. method according to claim 1 and 2, it is characterised in that step 1) using the Strong oxdiative ability reduction molten steel of aluminium
In dissolved oxygen content to≤3ppm.
4. method according to claim 1, it is characterised in that step 2) the new water consumption is 100~1000kg/ tons
Steel.
5. the method according to claim 1 or 4, it is characterised in that step 2) new water is sprayed onto by steel by high pressure nozzle
Surface.
6. method according to claim 1, it is characterised in that step 3) method of the sacrificial anode is in steel storage
The metal that uniform connection reproducibility is better than iron on area's support is used as anode, and steel are used as negative electrode.
7. method according to claim 6, it is characterised in that step 3) quality of the reproducibility metal that is better than iron is
The 0.01%~0.1% of storage steel gross mass.
8. the method according to claim 6 or 7, it is characterised in that the metal that the reproducibility is better than iron is magnesium, aluminum and zinc
In one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078256.8A CN106868254A (en) | 2017-02-14 | 2017-02-14 | A kind of method for reducing steel corrosion speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078256.8A CN106868254A (en) | 2017-02-14 | 2017-02-14 | A kind of method for reducing steel corrosion speed |
Publications (1)
| Publication Number | Publication Date |
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| CN106868254A true CN106868254A (en) | 2017-06-20 |
Family
ID=59167562
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| CN201710078256.8A Pending CN106868254A (en) | 2017-02-14 | 2017-02-14 | A kind of method for reducing steel corrosion speed |
Country Status (1)
| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995027A (en) * | 2011-10-24 | 2013-03-27 | 中国科学院金属研究所 | Sacrificial anode for cathode protection of underground pipeline system |
| CN103667928A (en) * | 2013-11-29 | 2014-03-26 | 莱芜钢铁集团有限公司 | Cold shortness resistant N80 petroleum pipe steel and manufacturing method thereof |
-
2017
- 2017-02-14 CN CN201710078256.8A patent/CN106868254A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995027A (en) * | 2011-10-24 | 2013-03-27 | 中国科学院金属研究所 | Sacrificial anode for cathode protection of underground pipeline system |
| CN103667928A (en) * | 2013-11-29 | 2014-03-26 | 莱芜钢铁集团有限公司 | Cold shortness resistant N80 petroleum pipe steel and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 栗红等: "Mg合金在炼钢过程应用研究", 《上海金属》 * |
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Application publication date: 20170620 |