CN105861927A - Coating-free high surface steel plate for engineering machinery and manufacturing method thereof - Google Patents
Coating-free high surface steel plate for engineering machinery and manufacturing method thereof Download PDFInfo
- Publication number
- CN105861927A CN105861927A CN201610440196.5A CN201610440196A CN105861927A CN 105861927 A CN105861927 A CN 105861927A CN 201610440196 A CN201610440196 A CN 201610440196A CN 105861927 A CN105861927 A CN 105861927A
- Authority
- CN
- China
- Prior art keywords
- engineering machinery
- high surface
- steel sheet
- application
- surface steel
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to the technical field of production of steel plates for engineering machinery, and particularly relates to a coating-free high surface steel plate for engineering machinery and a manufacturing method thereof. The coating-free high surface steel plate for engineering machinery is smelted from the following chemical components in percentage by weight: 0.12-0.15% of C, 0.05-0.20% of Si, 1.00-1.10% of Mn, at most 0.010% of P, at most 0.005% of S, 0.020-0.030% of Alt, 0.20-0.25% of Cr, at most 10PPm of [O], at most 20PPm of [N], at most 15PPm of [H], and the balance of Fe and inevitable impurities. The steel plate has excellent high surface quality and certain resistance to atmospheric corrosion, is free of coating, and is applicable to the field of manufacturing of engineering machinery.
Description
Technical field
The invention belongs to the technical field that steel for engineering machinery plate produces, be specifically related to a kind of engineering machinery with exempting from application
High surface steel sheet and manufacture method.
Background technology
Engineering machinery mostly is outdoor study, is chronically exposed in the complex environment of various air and different medium, therefore, anti-
Rust, corrosion-resistant be its important quality requirements, meanwhile, outward appearance is also the Consideration of client, current construction machinery production enterprise
Industry all uses coating process to realize product protection and the purpose of decoration, mostly has special Painting Shop, typically to pass through
Impeller blasting, primer spray, smear putty, polishing is made up a deficiency, the series of complex such as topcoating and loaded down with trivial details multiple working procedure.Therefore, application
Operation occupies bigger proportion in manufacturing cost.Meanwhile, painting environment requires cleaning, is dried, to temperature, humidity, wind speed, light
As requested is higher, and wastes time and energy.Even some operation is manual operations, adversely affects safety of workers and health, more
It is easily caused coating quality fluctuation.Therefore, a kind of flawless steel plate of clean surface is needed badly so that saving of labor saves when follow-up application
Time, economize on resources, be beneficial to environmental protection, and reliable in quality, use safe, beautiful and comfortable, this is that construction machinery production industry is to steel
The high request that factory proposes, also represent the trend of future market development.
The conventional methods that most steel mills take on this kind plate surface quality be mostly by improve de-scaling efficiency,
Reduce means such as adding thermal defect, reinforcement slab finishing, optimization rolling mill practice to make a return journey except other of iron scale or surface of steel plate lack
Fall into, though these measures can improve the surface quality of steel plate to a certain extent, but can not tackle the problem at its root, such as slab
Heating is almost gas-fired thermal source and is conducted to slab by contacting metal, is contact heating, it is impossible to avoid oxidation and take off
Carbon, and fuel gas buring produce smog grow environmental issue；Though high-pressure water pressure can improve scale removal effect after increasing, but band next life
Produce potential safety hazard；Though rolling the surface quality inspection links of rear steel plate through macroscopy less than surface quality defect, but remove at follow-up ball blast
But the problem such as pockmark, Pericarpium Citri tangerinae is exposed during rust.It addition, the acceptance criteria mostly basis steel sheet that construction machinery production producer is to steel plate
National standard, as in GB/T1591-2008 " low-alloy high-tensile structural steel " standard, the requirement of Surface Quality depends on greatly
Visually test, easily missing inspection surface defect, surface quality also cannot quantify, and this results in different batches, different manufacturers
Product quality is uneven, brings inconvenience to end user.Therefore, necessary inspection concrete to the quantization of this steel plate refers to
Mark, provides the product after ball blast to construction machinery production enterprise, and construction machinery production enterprise can reduce coating process, not even
With application, use after direct topcoating.So can thoroughly stop Surface Defects in Steel Plate, save can to again construction machinery production enterprise
Save coating process cost.
Summary of the invention
Present invention aims to the defect of above-mentioned existence and a kind of engineering machinery high surface with exempting from application is provided
Steel plate and manufacture method thereof, this steel plate has the great surface quality of excellence, and has certain atmospheric corrosion resistance, can be in order to avoid being coated with
Dress, for construction machinery production field.
The technical scheme is that a kind of engineering machinery high surface steel sheet exempting from application, described high surface steel sheet
Melting chemical composition is by weight percentage: C:0.12-0.15%；Si:0.05-0.20%；Mn:1.00-1.10%；P≤
0.010%；S≤0.005%；Alt:0.020-0.030%；Cr:0.20-0.25%；[O]≤10PPm；[N]≤20PPm；[H]
≤15PPm；Remaining is Fe and inevitable impurity.
The described engineering machinery high surface steel sheet exempting from application, its melting chemical composition is by weight percentage: C:
0.14%；Si:0.10%；Mn:1.05%；P:0.008%；S:0.002%；Alt:0.027%；Cr:0.22%；[O]:
8PPm；[N]: 15PPm；[H]: 11PPm；Remaining is Fe and inevitable impurity.
Described steel plate thickness is 6-80mm.
The described engineering machinery high surface steel sheet manufacture method exempting from application, comprises the following steps: (1) KR molten iron is pre-successively
Process；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6) RH vacuum cycle takes off
Gas；(7) M-EMS continuous casting；(8) strand hot charging；(9) strand sensing heating；(10) high-pressure water descaling；(11) roughing；
(12) finish rolling；(13) thermal straightening；(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning；(17) antirust bag
Dress.
Described step (6) RH vacuum circulation degassing: vacuum is 1.85-2.00mbar, vacuum processing time is 25-
30min, after line feeding, the soft argon blowing time is 18-20min.
Described step (7) M-EMS continuous casting: using dual-sided perpendicular motion model, frequency is 0.50-0.80HZ,
Power is 800-1000KVA；Using slab sensing heating, its frequency is 50Hz, and heat time heating time is 3.8-4.0h.
Described step (12) finish rolling: the drafts≤1.5mm of last passage, the mill speed of last passage≤
1.8m/s.Last passage of finishing rolling step uses the rolling at a slow speed of light reduction to play the effect preferably controlling glacing flatness, control
Controlling the water circulation is put down and is: steel plate unevenness≤1.5mm/m；
Described step (16) centrifugal blast cleaning: nozzle entrance air pressure is 0.60-0.70MPa, abrasive material ball footpath≤1.0mm,
Mouth firing angle is 50 °-70 °, and nozzle and surface of steel plate distance are 120mm-140mm.
The steel plate that described manufacture method produces, its derusting grade ＞ Sa2 level, unevenness≤1.5mm/m, A, B, C, D tetra-class
Non-metallic inclusion summation≤3.0 grade, tensile strength ＞ 610MPa.
The invention have the benefit that engineering machinery of the present invention contains in the high surface steel sheet chemical composition of application with exempting from
There is Cr element, there is certain atmospheric corrosion resistance；Control level is: [O]≤10PPm in smelting component, [N]≤20PPm,
[H]≤15PPm, A, B, C, D tetra-class non-metallic inclusion summation≤3.0 grade.Steel plate of the present invention is widely used in engineering machinery
Manufacture field, has high surface quality, and atmospheric corrosion resistance, can save in a large number for engineering machinery in order to avoid application uses
Manufacturing cost, and beneficially environmental protection and workers ' health, according to GB/T8923 " steel surface rusting grade and rust cleaning etc. before application
Level " national standard, its derusting grade ＞ Sa2 level.The mechanical property that steel plate tool is excellent simultaneously, yield strength ＞ 400MPa, tension
Intensity ＞ 610MPa, elongation percentage ＞ 26%.
Engineering machinery of the present invention plays a role as follows with exempting from each step in the high surface steel sheet manufacture method of application:
(5) LF external refining: removing harmful element, P, S, O, N, H content are low；(6) RH vacuum circulation degassing: can efficiently dehydrogenation, go
Nitrogen, deoxidation, farthest reduce field trash；(7) M-EMS continuous casting: continuous casting process uses crystallizer electromagnetism to stir
Mix, reduce strand segregation, remove non-metallic inclusion, improve casting billet surface and subcutaneous quality；(8) strand hot charging, (9) strand sense
Should heat: blank hot is sent, use the untouchable mode of sensing heating, make strand at a slow speed by power frequency induction furnace, induction furnace
Coil has alternating current, produces the high density magnetic line of force, make strand produces induced emf, thus produce eddy current, due to casting
Base has resistance to make it generate heat, this untouchable heating compared with traditional stepping beam type gas-fired furnace, required heating
Time is short, due to not burning, can avoid oxidation and the decarburization of slab, reduce iron scale；Meet environmental requirement simultaneously；
(16) centrifugal blast cleaning: use centrifugal blast cleaning to make surface of steel plate reach preferable antirust grade, ensure for construction machinery production enterprise
Surface quality, even reduces coating process.
The steel plate that the present invention produces, is widely used in construction machinery production field, has high surface quality, and has certain
Atmospheric corrosion resistance, a large amount of manufacturing cost can be saved in order to avoid application uses for construction machinery production, and beneficially environmental protection and
Workers ' health, its derusting grade ＞ Sa2 level, unevenness≤1.5mm/m, A, B, C, D tetra-class non-metallic inclusion summation≤3.0
Level, tensile strength ＞ 610MPa.As can be seen here, the present invention compared with prior art, has the most progressive.
Detailed description of the invention
Below by embodiment, the present invention will be described in detail.
Embodiment 1
Thickness is the engineering machinery high surface steel sheet exempting from application of 6mm.
The melting chemical composition of steel plate is by mass percentage: C:0.12%；Si:0.10%；Mn:1.05%；P:
0.008%；S:0.002%；Alt:0.027%；Cr:0.20%；[O]: 8PPm；[N]: 12PPm；[H]: 11PPm；Remaining is Fe
And inevitable impurity.
The described engineering machinery high surface steel sheet manufacture method exempting from application, comprises the following steps: (1) KR molten iron is pre-successively
Process；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6) RH vacuum cycle takes off
Gas: vacuum is 1.88mbar, vacuum processing time is 28min, and after line feeding, the soft argon blowing time is 18min；(7) crystallizer electromagnetism
Stirring continuous casting: using dual-sided perpendicular motion model, frequency is 0.7HZ, and power is 900KVA；Use slab sensing heating, its frequency
Rate is 50Hz, and heat time heating time is 4.0h；(8) strand hot charging；(9) strand sensing heating；(10) high-pressure water descaling；(11) roughing；
(12) finish rolling: the drafts of last passage is 1.3mm, the mill speed of last passage is 1.5m/s；(13) thermal straightening；
(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning: nozzle entrance air pressure is 0.65MPa, abrasive material ball
Footpath 0.8mm, mouth firing angle is 60 °, and nozzle and surface of steel plate distance are 135mm；(17) rust prevention packaging.
Embodiment 2
Thickness is the engineering machinery high surface steel sheet exempting from application of 20mm.
The melting chemical composition of steel plate is by mass percentage: C:0.15%；Si:0.20%；Mn:1.08%；P:
0.010%；S:0.005%；Alt:0.030%；Cr:0.24%；[O]: 10PPm；[N]: 18PPm；[H]: 13PPm；Remaining be
Fe and inevitably impurity.
The described engineering machinery high surface steel sheet manufacture method exempting from application, comprises the following steps: (1) KR molten iron is pre-successively
Process；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6) RH vacuum cycle takes off
Gas: vacuum is 2.00mbar, vacuum processing time is 25min, and after line feeding, the soft argon blowing time is 20min；(7) crystallizer electromagnetism
Stirring continuous casting: using dual-sided perpendicular motion model, frequency is 0.65HZ, and power is 950KVA；Use slab sensing heating, its frequency
Rate is 50Hz, and heat time heating time is 3.9h；(8) strand hot charging；(9) strand sensing heating；(10) high-pressure water descaling；(11) roughing；
(12) finish rolling: the drafts of last passage is 1.5mm, the mill speed of last passage is 1.6m/s；(13) thermal straightening；
(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning: nozzle entrance air pressure is 0.66MPa, abrasive material ball
Footpath 1.0mm, mouth firing angle is 55 °, and nozzle and surface of steel plate distance are 125mm；(17) rust prevention packaging.
Embodiment 3
Thickness is the engineering machinery high surface steel sheet exempting from application of 40mm.
The melting chemical composition of steel plate is by mass percentage: C:0.13%；Si:0.18%；Mn:1.10%；P:
0.007%；S:0.001%；Alt:0.020%；Cr:0.20%；[O]: 5PPm；[N]: 10PPm；[H]: 8PPm；Remaining is Fe
And inevitable impurity.
The described engineering machinery high surface steel sheet manufacture method exempting from application, comprises the following steps: (1) KR molten iron is pre-successively
Process；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6) RH vacuum cycle takes off
Gas: vacuum is 1.85mbar, vacuum processing time is 27min, and after line feeding, the soft argon blowing time is 19min；(7) crystallizer electromagnetism
Stirring continuous casting: using dual-sided perpendicular motion model, frequency is 0.80HZ, and power is 1000KVA；Use slab sensing heating, its
Frequency is 50Hz, and heat time heating time is 3.8h；(8) strand hot charging；(9) strand sensing heating；(10) high-pressure water descaling；(11) thick
Roll；(12) finish rolling: the drafts of last passage is 1.1mm, the mill speed of last passage is 1.2m/s；(13) heat is rectified
Directly；(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning: nozzle entrance air pressure is 0.70MPa, mill
Material ball footpath 0.65mm, mouth firing angle is 70 °, and nozzle and surface of steel plate distance are 140mm；(17) rust prevention packaging.
Embodiment 4
Thickness is that the engineering machinery of 80mm is with exempting from application height surface steel sheet.
The melting chemical composition of steel plate is by mass percentage: C:0.14%；Si:0.20%；Mn:1.00%；P:
0.006%；S:0.001%；Alt:0.029%；Cr:0.25%；[O]: 9PPm；[N]: 20PPm；[H]: 15PPm；Remaining is Fe
And inevitable impurity；
The described engineering machinery high surface steel sheet manufacture method exempting from application, comprises the following steps: (1) KR molten iron is pre-successively
Process；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6) RH vacuum cycle takes off
Gas: vacuum is 1.95mbar, vacuum processing time is 27min, and after line feeding, the soft argon blowing time is 18.5min；(7) crystallizer electricity
Magnetic stirring continuous casting: using dual-sided perpendicular motion model, frequency is 0.80HZ, and power is 805KVA；Use slab sensing heating, its
Frequency is 50Hz, and heat time heating time is 4.0h；(8) strand hot charging；(9) strand sensing heating；(10) high-pressure water descaling；(11) thick
Roll；(12) finish rolling: the drafts of last passage is 0.6mm, the mill speed of last passage is 0.9m/s；(13) heat is rectified
Directly；(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning: nozzle entrance air pressure is 0.60MPa, mill
Material ball footpath 0.9mm, mouth firing angle is 65 °, and nozzle and surface of steel plate distance are 135mm；(17) rust prevention packaging.
The engineering machinery of embodiment of the present invention manufacture is as follows by the performance indications exempting from application height surface steel sheet:
It can be seen that utilize the 6-80mm engineering machinery that the present invention produces with exempting from application height surface steel sheet, surface quality is excellent
Good, there is high intensity, high-ductility, be particularly suitable for the construction machinery production higher to coating specification, and can be engineering machinery system
Make enterprise and save painting cost.The present invention compared with prior art, has the most progressive.
Claims (9)
1. the engineering machinery high surface steel sheet exempting from application, it is characterised in that the melting chemical group of described high surface steel sheet
Become and be by weight percentage: C:0.12-0.15%；Si:0.05-0.20%；Mn:1.00-1.10%；P≤0.010%；S≤
0.005%；Alt:0.020-0.030%；Cr:0.20-0.25%；[O]≤10PPm；[N]≤20PPm；[H]≤15PPm；Remaining be
Fe and inevitably impurity.
The engineering machinery high surface steel sheet exempting from application the most according to claim 1, it is characterised in that its melting chemical composition
It is by weight percentage: C:0.14%；Si:0.10%；Mn:1.05%；P:0.008%；S:0.002%；Alt:0.027%；Cr:
0.22%；[O]: 8PPm；[N]: 15PPm；[H]: 11PPm；Remaining is Fe and inevitable impurity.
The engineering machinery high surface steel sheet exempting from application the most according to claim 1, it is characterised in that described steel plate thickness is
6-80mm。
4. the high surface steel sheet manufacture method exempting from application of engineering machinery described in claim 1, comprises the following steps successively:
(1) KR molten iron pretreatment；(2) converter or electric furnace smelting；(3) deoxidation alloying；(4) CAS refine；(5) LF external refining；(6)
RH vacuum circulation degassing；(7) M-EMS continuous casting；(8) strand hot charging；(9) strand sensing heating；(10) water under high pressure removes
Squama；(11) roughing；(12) finish rolling；(13) thermal straightening；(14) air is cooled to room temperature；(15) Length-fixing cutting；(16) centrifugal blast cleaning；
(17) rust prevention packaging.
The engineering machinery high surface steel sheet manufacture method exempting from application the most according to claim 4, it is characterised in that described step
Suddenly (6) RH vacuum circulation degassing: vacuum is 1.85-2.00mbar, vacuum processing time is 25-30min, soft argon blowing after line feeding
Time is 18-20min.
The engineering machinery high surface steel sheet manufacture method exempting from application the most according to claim 4, it is characterised in that described step
Suddenly (7) M-EMS continuous casting: using dual-sided perpendicular motion model, frequency is 0.50-0.80HZ, and power is 800-
1000KVA；Using slab sensing heating, its frequency is 50Hz, and heat time heating time is 3.8-4.0h.
The engineering machinery high surface steel sheet manufacture method exempting from application the most according to claim 4, it is characterised in that described step
Suddenly (12) finish rolling: the drafts≤1.5mm of last passage, the mill speed≤1.8m/s of last passage.
The engineering machinery high surface steel sheet manufacture method exempting from application the most according to claim 4, it is characterised in that described step
Suddenly (16) centrifugal blast cleaning: nozzle entrance air pressure is 0.60-0.70MPa, abrasive material ball footpath≤1.0mm, mouth firing angle is 50 °-
70 °, nozzle and surface of steel plate distance are 120mm-140mm.
The engineering machinery high surface steel sheet manufacture method exempting from application the most according to claim 4, it is characterised in that described system
Making the steel plate that method produces, its derusting grade ＞ Sa2 level, unevenness≤1.5mm/m, A, B, C, D tetra-class non-metallic inclusions are total
With≤3.0 grades, tensile strength ＞ 610MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440196.5A CN105861927A (en) | 2016-06-17 | 2016-06-17 | Coating-free high surface steel plate for engineering machinery and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440196.5A CN105861927A (en) | 2016-06-17 | 2016-06-17 | Coating-free high surface steel plate for engineering machinery and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105861927A true CN105861927A (en) | 2016-08-17 |
Family
ID=56650814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610440196.5A Pending CN105861927A (en) | 2016-06-17 | 2016-06-17 | Coating-free high surface steel plate for engineering machinery and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105861927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521360A (en) * | 2016-10-26 | 2017-03-22 | 南京钢铁股份有限公司 | No-coating weather-proof round steel production method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764760A (en) * | 2012-07-03 | 2012-11-07 | 南京钢铁股份有限公司 | Method for manufacturing high surface quality hot-rolled steel plate |
| CN103302106A (en) * | 2013-07-09 | 2013-09-18 | 济钢集团有限公司 | Thick steel plate straightness improvement method and control method thereof in rolling process |
| CN104674117A (en) * | 2015-03-19 | 2015-06-03 | 山东钢铁股份有限公司 | 420 MPa grade steel plate for ocean engineering, and manufacturing method thereof |
| JP2016079477A (en) * | 2014-10-20 | 2016-05-16 | Ｊｆｅスチール株式会社 | Abrasion resistant steel sheet excellent in flexure processability and impact abrasion resistance and manufacturing method therefor |
| JP2016079459A (en) * | 2014-10-17 | 2016-05-16 | Ｊｆｅスチール株式会社 | Abrasion resistant steel sheet and manufacturing method therefor |
-
2016
- 2016-06-17 CN CN201610440196.5A patent/CN105861927A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764760A (en) * | 2012-07-03 | 2012-11-07 | 南京钢铁股份有限公司 | Method for manufacturing high surface quality hot-rolled steel plate |
| CN103302106A (en) * | 2013-07-09 | 2013-09-18 | 济钢集团有限公司 | Thick steel plate straightness improvement method and control method thereof in rolling process |
| JP2016079459A (en) * | 2014-10-17 | 2016-05-16 | Ｊｆｅスチール株式会社 | Abrasion resistant steel sheet and manufacturing method therefor |
| JP2016079477A (en) * | 2014-10-20 | 2016-05-16 | Ｊｆｅスチール株式会社 | Abrasion resistant steel sheet excellent in flexure processability and impact abrasion resistance and manufacturing method therefor |
| CN104674117A (en) * | 2015-03-19 | 2015-06-03 | 山东钢铁股份有限公司 | 420 MPa grade steel plate for ocean engineering, and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521360A (en) * | 2016-10-26 | 2017-03-22 | 南京钢铁股份有限公司 | No-coating weather-proof round steel production method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101386124B (en) | Medium and heavy plate production technique and special production line thereof | |
| CN106350714B (en) | A kind of 3C industries high-end anodic oxidation aluminium strip and its production method | |
| CN111687209B (en) | Rolling process of medium-carbon high-sulfur alloy steel wire rod | |
| CN105886750A (en) | Continuous hot galvanizing method for 1180 MPa-grade Q&P steel | |
| CN103060680A (en) | Semi-process cold-rolling non-oriented electrical steel and production process thereof | |
| CN108774709B (en) | Hot dip coating steel plate with excellent heat insulation reflectivity to light and heat and preparation method thereof | |
| CN102312167B (en) | High-strength hot rolled steel plate for counter enameling and manufacturing method thereof | |
| CN110788513B (en) | Production method for improving wire feeding stability of wire-welded steel | |
| CN111041327A (en) | Production method of cold-rolled steel strip with yield strength below 210MPa | |
| CN104195426B (en) | Semi-processed non-oriented silicon steel and manufacturing method thereof | |
| CN111676355A (en) | Online solution treatment process for austenitic stainless steel plate | |
| CN103066768A (en) | Production craft utilizing semi-processed steel to produce motor rotor and motor stator | |
| CN101586210B (en) | High strength enamel steel and producing technology and enamel firing technology thereof | |
| CN106282801A (en) | A kind of hot rolling large roughness surface weathering steel and manufacture method thereof | |
| CN105274429A (en) | Production method for alloy filament | |
| CN105220101B (en) | The method for exempting from pickling hot dip sheet band product is directly produced by molten steel | |
| CN113444980B (en) | Resource-saving 290 MPa-level steel plate for building anti-seismic energy dissipation structure and manufacturing and application thereof | |
| CN105568118B (en) | Low-temperature and high-magnetic-strength oriented silicon steel production process | |
| CN102851477A (en) | Method for reducing hearth roll mark defect on steel plate surface | |
| CN105274428A (en) | Production method for alloy filament with zero defect on surface | |
| CN106048140A (en) | Production method of non-oriented electrical steel 50w800 with blueing coating | |
| CN106086354A (en) | A kind of production method of the coating non-oriented electrical steel 50W600 that turns blue | |
| CN105861927A (en) | Coating-free high surface steel plate for engineering machinery and manufacturing method thereof | |
| CN102965486B (en) | Technology for solving incomplete cleaning of acid washing on cold-rolled base material surface by virtue of steel rolling process | |
| CN101691642A (en) | Sulfuric acid dew point corrosion-resistant steel and production process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |