CN103333996B - A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate - Google Patents
A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate Download PDFInfo
- Publication number
- CN103333996B CN103333996B CN201310291750.4A CN201310291750A CN103333996B CN 103333996 B CN103333996 B CN 103333996B CN 201310291750 A CN201310291750 A CN 201310291750A CN 103333996 B CN103333996 B CN 103333996B
- Authority
- CN
- China
- Prior art keywords
- groups
- quenching
- group
- steel plate
- super
- 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.)
- Active
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The present invention relates to hot rolled strip technology field, particularly relate to the quenching technical of a kind of superhigh intensity sea work steel E690 super-thick steel plate, it is characterized in that, including controlling the water yield and the roller table speed of each group of nozzle, its upper roller system drafts is 0.2 ~ 0.5mm, and roller table speed is 1.2 ~ 1.5m/min, before quenching, temperature is 910 ~ 930 DEG C, 9 ~ 15 DEG C/s of cooldown rate, after quenching, temperature is 10 ~ 30 DEG C, and it is respectively organized nozzle water yield design parameter and controls such as table.Compared with prior art, the invention has the beneficial effects as follows: after implementing the present invention program, it is ensured that after quenching, E690 super-thick steel plate plate shape is good, and steel plate maximum unevenness≤7mm/m, soleplate shape qualification rate reaches more than 95%, stopped the generation of steel-fastening accident completely.
Description
Technical field
The present invention relates to hot rolled strip technology field, particularly relate to a kind of superhigh intensity sea work steel E690 special
The quenching technical of steel plate.
Background technology
E690 steel plate is superhigh intensity steel plate for ocean engineering, belongs to high intensity, highly difficult, high additional
Value product, is widely used in the key projects such as oil drilling platform.E690 superhigh intensity sea work steel is adopted
By TMCP+ off-line hardening and tempering process scheme.After thickness is rolled by TMCP more than the E690 of 80mm, obtain
Obtain the highest intensity.The chemical composition special due to it and performance requirement, use common special thickness
Plate quenching technical, easily produces plate shape wooden dipper bent, and steel-fastening accident even occurs.
At present thickness is more than to the E690 super-thick steel plate of 80mm, is heat-treated the most targetedly
Technique, mostly uses common super-thick steel plate quenching technical, is usually and uses with 20 groups of nozzles
Quenching press, realize, for the plate produced by controlling the water yield of each section of nozzle and quenching velocity
Shape wooden dipper Qu Wenti, steel plate maximum unevenness 16mm/m, the later stage need to use pressing to save, no
Increase only production cost, and extend the production cycle, efficiency comparison is low.
Summary of the invention
It is an object of the invention to provide the quenching technical of a kind of superhigh intensity sea work steel E690 super-thick steel plate
, it is adaptable to the Strip Shape Control of E690 superhigh intensity sea work steel more than 80mm thickness, make steel plate
Shape qualification rate reaches more than 95%.
For achieving the above object, the technical scheme is that
The quenching technical of a kind of superhigh intensity sea work steel E690 super-thick steel plate, including controlling 20 mouth quenching press
On the water yield of each group nozzle and quenching velocity, its upper roller system drafts is 0.2 ~ 0.5mm, roller-way
Speed is 1.2 ~ 1.5m/min, and before quenching, temperature is 910 ~ 930 DEG C, 9 ~ 15 DEG C/s of cooldown rate,
After quenching, temperature is 10 ~ 30 DEG C, and it is respectively organized nozzle design parameter and controls such as following table:
Described each group of nozzle is narrow slit type nozzle, and wherein the 7th group is high pressure section to the 12nd group, and hydraulic pressure is
4~6Mpa；13rd group is low pressure stage to the 20th group, and hydraulic pressure is 0.3 ~ 0.5Mpa.
Each section of nozzle water yield in table, quenching velocity parameter role are as follows:
1) by adjusting 1 ~ 6 group of water yield of gap nozzle, horizontal steel plate inhomogeneous cooling can be controlled even, reduce
The defect such as arch, central concave in the middle of producing；
2) by adjusting nozzle plenum section (7 ~ 12 groups) water yield, button, two under generation two can be reduced
The defect such as upwarp；
3) by adjusting the water yield of gap nozzle low pressure stage (13 ~ 20 groups), longitudinal steel plate cooling is reduced
The defect such as uneven；
4) by adjusting quenching velocity, the defects such as generation steel plate edge wave can be reduced.
Compared with prior art, the invention has the beneficial effects as follows: after implementing the present invention program, it is ensured that
After quenching, E690 super-thick steel plate plate shape is good, steel plate maximum unevenness≤7mm/m, and soleplate shape is closed
Lattice rate reaches more than 95%, has stopped the generation of steel-fastening accident completely.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
As a example by lot number 80mm thickness E690 as B425801800, use the quenching press with 20 groups of nozzles
, each group nozzle water yield and technological parameter such as following table:
Described each group of nozzle is narrow slit type nozzle, and wherein the 7th group is high pressure section to the 12nd group, and hydraulic pressure is
4Mpa；13rd group is low pressure stage to the 20th group, and hydraulic pressure is 0.3Mpa.
Before quenching, temperature is 930 DEG C, and 9 DEG C/s of cooldown rate, after quenching, temperature is 15 DEG C.
After process above quenches, steel plate template is good, steel plate maximum unevenness 4mm/m.Accord with completely
Standardization.
Embodiment 2
As a example by lot number 90mm thickness E690 as B425801900, use the quenching press with 20 groups of nozzles
, each group nozzle water yield and technological parameter such as following table:
Described each group of nozzle is narrow slit type nozzle, and wherein the 7th group is high pressure section to the 12nd group, and hydraulic pressure is
5Mpa；13rd group is low pressure stage to the 20th group, and hydraulic pressure is 0.4Mpa.
Before quenching, temperature is 910 DEG C, and 12 DEG C/s of cooldown rate, after quenching, temperature is 10 DEG C.
After process above quenches, steel plate template is good, steel plate maximum unevenness 4mm/m.Accord with completely
Standardization.
Embodiment 3
As a example by lot number 100mm thickness E690 as B425802000, use the quenching press with 20 groups of nozzles
, each group nozzle water yield and technological parameter such as following table:
Described each group of nozzle is narrow slit type nozzle, and wherein the 7th group is high pressure section to the 12nd group, and hydraulic pressure is
6Mpa；13rd group is low pressure stage to the 20th group, and hydraulic pressure is 0.5Mpa.
Before quenching, temperature is 920 DEG C, and 14 DEG C/s of cooldown rate, after quenching, temperature is 30 DEG C.
After process above quenches, steel plate template is good, steel plate maximum unevenness 5mm/m.Accord with completely
Standardization.
Claims (1)
1. a quenching technical for superhigh intensity sea work steel E690 super-thick steel plate, including controlling respectively to organize spray on 20 groups of quenching press
The water yield of mouth and quenching velocity, it is characterised in that its upper roller system drafts is 0.2～0.5mm, roller table speed is
1.2～1.5m/min, before quenching, temperature is 910～930 DEG C, cooldown rate 9～15 DEG C/s, and after quenching, temperature is 10～30 DEG C, its
The injection flow rate of each group nozzle is:
1 group: 160～180m3/h
2 groups: 340～360m3/h
3 groups: 160～180m3/h
4 groups: 210～230m3/h
5 groups: 430～450m3/h
6 groups: 210～230m3/h
7 groups: 90～110m3/h
8 groups: 190～210m3/h
9 groups: 90～110m3/h
10 groups: 110～130m3/h
11 groups: 240～260m3/h
12 groups: 110～130m3/h
13 groups: 460～480m3/h
14 groups: 620～640m3/h
15 groups: 230～250m3/h
16 groups: 310～330m3/h
17 groups: 230～250m3/h
18 groups: 310～330m3/h
19 groups: 230～250m3/h
20 groups: 310～330m3/h
Described each group of nozzle is narrow slit type nozzle, and wherein the 7th group is high pressure section to the 12nd group, and hydraulic pressure is 4～6Mpa；The
13 groups is low pressure stage to the 20th group, and hydraulic pressure is 0.3～0.5Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291750.4A CN103333996B (en) | 2013-07-12 | 2013-07-12 | A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291750.4A CN103333996B (en) | 2013-07-12 | 2013-07-12 | A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103333996A CN103333996A (en) | 2013-10-02 |
| CN103333996B true CN103333996B (en) | 2016-09-07 |
Family
ID=49242191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310291750.4A Active CN103333996B (en) | 2013-07-12 | 2013-07-12 | A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103333996B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061363A (en) * | 2010-11-25 | 2011-05-18 | 北京科技大学 | Direct quenching device for medium plate and quenching process thereof |
| CN102400043A (en) * | 2011-11-10 | 2012-04-04 | 舞阳钢铁有限责任公司 | Large-thickness steel plate for oceaneering and production method thereof |
| CN103740905A (en) * | 2013-12-26 | 2014-04-23 | 秦皇岛首秦金属材料有限公司 | Method for water-cooling steel plate over 80mm thick by quenching machine |
-
2013
- 2013-07-12 CN CN201310291750.4A patent/CN103333996B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061363A (en) * | 2010-11-25 | 2011-05-18 | 北京科技大学 | Direct quenching device for medium plate and quenching process thereof |
| CN102400043A (en) * | 2011-11-10 | 2012-04-04 | 舞阳钢铁有限责任公司 | Large-thickness steel plate for oceaneering and production method thereof |
| CN103740905A (en) * | 2013-12-26 | 2014-04-23 | 秦皇岛首秦金属材料有限公司 | Method for water-cooling steel plate over 80mm thick by quenching machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103333996A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103255277B (en) | The method of wide thin IF steel is produced in continuous annealing | |
| CN103397290B (en) | A kind of method eliminating galvanized sheet surface black band defect | |
| CN202643778U (en) | Large-scale aluminum alloy on-line quenching device | |
| CN104525560A (en) | Effective control method for pitted surface of plain carbon steel/Nb-containing steel plate of 20-30 mm thickness | |
| CN106862269A (en) | It is a kind of to suppress the method that magnesium alloy plate edge splits | |
| CN104226684B (en) | A kind of thick Ti of 0.1mm2The cold-rolling process of AlNb base alloy foil | |
| CN110117708B (en) | Quenching method of thin steel plate | |
| CN104475460A (en) | Method for controlling cold rolling edge crack of high magnetic induction grain-oriented silicon steel after normalizing | |
| CN103031489B (en) | Production method of Q345B steel plate | |
| CN103333996B (en) | A kind of quenching technical of superhigh intensity sea work steel E690 super-thick steel plate | |
| CN205603446U (en) | Combination formula photovoltaic glass coating film tempering production line of high efficiency low energy consumption | |
| CN104001742A (en) | Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units | |
| CN203030624U (en) | X-I short-process rolling unit for H-shaped steel | |
| CN106540994A (en) | A kind of method for improving 21mm thickness X70 pipe line steel plate shapes | |
| CN103286147A (en) | Hot-rolled board strip production line laminar cooling method | |
| CN202989220U (en) | Device for performing heat-treatment water-bath quenching on tire bead wires | |
| CN104498674B (en) | Steel plate cooling means | |
| CN202951740U (en) | Online roll bending and forming device for pipe fittings with ultra-high strength | |
| CN103934282A (en) | Finishing withdrawing-straightening tension control method for deep-draw galvanized steel sheet | |
| CN204434710U (en) | Section bar steel hot galvanizing surface zinc layers blows thin device | |
| CN112371720A (en) | Production method for improving surface quality of wire rod | |
| CN105521992A (en) | High strength shipbuilding section manufacturing technology | |
| CN203936139U (en) | A kind of rotary chain link descaling device | |
| CN102719641A (en) | Method for reducing symmetrical open-grained structures of edges of low-carbon cold heading steel wire rods | |
| CN105506253B (en) | A kind of method of raising TMCP ship steel tensile properties |
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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |