CN102766747B - Manufacturing method of high-strength non-magnetic abrasion-resistant steel - Google Patents
Manufacturing method of high-strength non-magnetic abrasion-resistant steel Download PDFInfo
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- CN102766747B CN102766747B CN 201210235444 CN201210235444A CN102766747B CN 102766747 B CN102766747 B CN 102766747B CN 201210235444 CN201210235444 CN 201210235444 CN 201210235444 A CN201210235444 A CN 201210235444A CN 102766747 B CN102766747 B CN 102766747B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005299 abrasion Methods 0.000 title abstract 3
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000013000 roll bending Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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Abstract
A manufacturing method of high-strength non-magnetic abrasion-resistant steel is mainly used for manufacturing Mn13 of which the end product is 3mm-6mm in thickness. The technological process comprises the following steps: preparing a blank, heating in a heating furnace, descaling through high-pressure water, rolling through a two-roller rolling mill for the first time, finish-rolling through a four-roller milling mill, rolling through a four-roller steckel mill, performing laminar cooling, curling, flattening, examining, packaging and supplying. The method provided by the invention solves the problem that a single sheet of the product 3mm-6mm in thickness can not be subject to solution heat treatment, achieves rolling production of thin high-strength non-magnetic abrasion-resistant steel (Mn13) and simultaneously realizes on-line solution treatment of the thin product.
Description
Technical field:
The invention belongs to stove and twist in the line heat treating method.High-strength no magnetic wear resisting steel of the present invention refers to Mn13.The present invention is mainly used in the manufacturing that finished product thickness is the Mn13 of 3-6mm specification.
Background technology:
After the production of present high-strength no magnetic wear resisting steel (Mn13) generally is the blank hot rolling, adopt individual solution treatment of heat treatment furnace high temperature (1040 ~ 1080 ℃), satisfy product performance (170≤HB≤270).Like this, cause problems such as the long and plate shape wooden dipper song of life cycle of the product, it is big that plate shape is declared useless amount, particularly produces the product of the Mn13(finished product thickness of thin specification≤6mm), and heat treatment furnace shove charge difficulty is big, can't carry out solution heat treatment to the sheet material of thickness 3-6mm.At present, domesticly produce thin specification (＜6mm) Mn13 without any a tame steel mill.
High-strength no magnetic wearing plate production difficulty is big, and for a long time always by overseas enterprise's monopolization, the trial-production of domestic a lot of steel mills all ends in failure.The at present main pooled applications of this steel grade is in shot blasting machine chamber body liner plate, and domestic major part is cast product, and rolled plate does not have substantially.
Summary of the invention:
In order to break high-strength no magnetic wear resisting steel (Mn13) for a long time by the situation of external monopolization, realize the high-strength no magnetic wear resisting steel low cost production of thin specification (3-6mm) sheet material, minimizing plate shape is declared useless, shortens the delivery cycle, the invention provides a kind of manufacture method of high-strength no magnetic wear resisting steel.
Technical scheme of the present invention:
The present invention utilizes the roll bending of the rolling 3-6mm of Steckel mill, after curling front spring is all worn water, curls again, realizes that the on-line solution of steel plate is handled.
The technological process of production of the present invention is: blank, and------high-pressure water descaling------------------curling,---opening flat,---four roller steckel rolling systems are delivered goods in the laminar flow cooling in the holding furnace insulation in four-high mill finish rolling in the duo mill breaking down by check---packing---in the process furnace heating.
It is characterized in that:
(1) chemical ingredients is: finished product C content is 0.95-1.05%; Mn:12.5-14.0%; Si:0.3-0.6%; Cr:0.6-1.0%; Mo:0.05-1.0%; V:0.05-1.0%
(2) Heating Furnace Control: the steel billet soaking temperature is not more than 1250 ℃, and rate of heating is 10-12min/10mm;
(3) two rollers, four rollers are taked to rob temperature and are rolled mode soon; Described rob temperature soon the mode of rolling refer to that rolled piece releases behind high-pressure water descaling from process furnace, high-speed rolling improves the rolled piece start rolling temperature as far as possible, robs temperature and rolls soon, four roller finish rolling start rolling temperatures are not less than 1080 ℃, four roller finish rolling finishing temperatures are not less than 1000 ℃;
(4) four-high mill finish rolling feeding thickness is 12mm; Four roller Steckel mill holding furnace temperature are 1000 ~ 1050 ℃;
(5) four roller Steckel mill finishing temperatures are greater than 800 ℃, rolling after, enter laminar cooling water and cool off fast, cooled steel billet temperature≤50 ℃.Described quick cooling: four roller Steckel mills finish trimmed size rolling after, directly enter laminar cooling water and carry out water-cooled, enter the water time shortens as far as possible, it is fast that cooling rate is wanted, and water temperature should not surpass 30 ℃ before the water-cooled, after the water-cooled, water temperature should be less than 60 ℃, and the surface of steel plate temperature is less than 50 ℃.
(6) cooled steel plate crimping machine curls.
The invention solves the problem that the 3-6mm thin slab product can not individual solution heat treatment.
Realized that thin size high-tensile does not have the stove volume production of magnetic wear resisting steel (Mn13), has realized that simultaneously the on-line solution of thin slab product is handled.
The present invention does not need to increase new installation and drops into, and has realized low-cost, high profit production, and ton steel finished product reduces by 300 yuan/ton.Broken high-strength no magnetic wear resisting steel (Mn13) for a long time by the situation of external monopolization.
Embodiment
Embodiment: present embodiment is the stainless hot rolling mill production instance of Taiyuan Iron and Steel Co., adopts the hardness performance index of the product of following technical process and technical parameter production all to meet HB hardness 250 ~ 270, and the plate shape planeness of opening after putting down reaches the following requirement of 6mm/m.
The first step: process furnace heating: the Mn13 blank packed into slowly heat in three sections continuous furnaces, preheating section temperature control: be not higher than 800 ℃, heating zone temperature control: 1200-1220 ℃, soaking zone temperature control: 1220-1250 ℃, determine according to rate of heating heat-up time, different sotck thinkness differences heat-up time is namely determined according to 10-12min/10mm.
Second step: after the blank that heats through process furnace is come out of the stove, through high-pressure water descaling, enter two rollers, four rollers carry out high-speed rolling, adopt rob temperature soon the mode of rolling be rolled, four-high mill finish rolling finishing temperature is greater than more than 1000 ℃.
The 3rd step: the feeding thickness requirement: require to be 12mm through the materials gauge of giving four roller Steckel mills after the four roller finish rolling, the both sides thickness difference is not more than 0.5mm.
The 4th step: four roller Steckel mill holding furnace temperature are 1000 ~ 1050 ℃ of controls.
The 5th the step: four roller Steckel mills are rolling, to four high finishing mill 12mm supplied materials temperature requirement greater than more than 930 ℃.Rolling preparation: press the supplied materials width to good clamping plate, the machine front splint is than the wide 100mm of supplied materials, and the machine rear plate uses withdrawing roll to send steel rolling than the wide 150mm of supplied materials.
The 6th step: four roller Steckel mills according to finished product thickness (3-6mm) require rolling after, tapping enters laminar cooling water and cools off fast from holding furnace, cooled steel billet temperature≤50 ℃.
The 7th step: cooled steel plate is gone into crimping machine and is curled.
The 8th step: the roll bending kaiping processing, cut sample simultaneously and carry out the hardness performance check, the steel plate of splitting after putting down identifies, packs.
The 9th step: steel plate is after the assay was approved joined the car shipping give the user.
Claims (1)
1. the manufacture method of a high-strength no magnetic wear resisting steel, technical process is: blank---the process furnace heating---and high-pressure water descaling---the duo mill breaking down---four-high mill finish rolling---the holding furnace insulation---four roller steckel rolling systems---the laminar flow cooling---curl---open flat---check---packing---delivery is characterized in that:
(1) chemical ingredients is: finished product C content is 0.95-1.05%; Mn:12.5-14.0%; Si:0.3-0.6%; Cr:0.6-1.0%; Mo:0.05-1.0%; V:0.05-1.0%; Product thickness is 3-6mm;
(2) Heating Furnace Control: the steel billet soaking temperature is not more than 1250 ℃, and rate of heating is 10-12min/10mm;
(3) two rollers, four rollers are taked to rob temperature and are rolled mode soon; Described rob temperature soon the mode of rolling refer to that rolled piece releases behind high-pressure water descaling from process furnace, high-speed rolling improves the rolled piece start rolling temperature as far as possible, robs temperature and rolls soon, four roller finish rolling start rolling temperatures are not less than 1080 ℃, four roller finish rolling finishing temperatures are not less than 1000 ℃;
(4) four-high mill finish rolling feeding thickness is 12mm; Four roller Steckel mill holding furnace temperature are 1000 ~ 1050 ℃;
(5) four roller Steckel mill finishing temperatures are greater than 800 ℃, rolling after, enter laminar cooling water and cool off fast, cooled steel billet temperature≤50 ℃;
Described quick cooling: four roller Steckel mills finish trimmed size rolling after, directly enter laminar cooling water and carry out water-cooled, enter the water time shortens as far as possible, it is fast that cooling rate is wanted, and water temperature is no more than 30 ℃ before the water-cooled, after the water-cooled, water temperature should be less than 60 ℃, and the surface of steel plate temperature is less than 50 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210235444 CN102766747B (en) | 2012-07-09 | 2012-07-09 | Manufacturing method of high-strength non-magnetic abrasion-resistant steel |
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| CN 201210235444 CN102766747B (en) | 2012-07-09 | 2012-07-09 | Manufacturing method of high-strength non-magnetic abrasion-resistant steel |
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| CN102766747A CN102766747A (en) | 2012-11-07 |
| CN102766747B true CN102766747B (en) | 2013-08-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103276173B (en) * | 2013-06-08 | 2015-05-06 | 山西太钢不锈钢股份有限公司 | Process method for rolling plate from 4Cr13 medium plate corrosion resistance mold steel |
| CN104962823A (en) * | 2015-06-11 | 2015-10-07 | 临汾通泽铸锻有限公司 | Novel wear-resisting steel material |
| CN110935726B (en) * | 2019-11-26 | 2021-03-16 | 陕西凸鹏钛锆股份有限公司 | Continuous rolling solution treatment process for TC4 titanium alloy strip |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512804A (en) * | 1982-04-13 | 1985-04-23 | Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) | Work-hardenable austenitic manganese steel and method for the production thereof |
| CN101660086A (en) * | 2008-08-25 | 2010-03-03 | 鞍钢股份有限公司 | A light-weight, high-performance twin-induced plasticity steel and its preparation method |
-
2012
- 2012-07-09 CN CN 201210235444 patent/CN102766747B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512804A (en) * | 1982-04-13 | 1985-04-23 | Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) | Work-hardenable austenitic manganese steel and method for the production thereof |
| CN101660086A (en) * | 2008-08-25 | 2010-03-03 | 鞍钢股份有限公司 | A light-weight, high-performance twin-induced plasticity steel and its preparation method |
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| CN102766747A (en) | 2012-11-07 |
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