CN103820723A - Cutlery stainless steel material and preparation method thereof - Google Patents
Cutlery stainless steel material and preparation method thereof Download PDFInfo
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- CN103820723A CN103820723A CN201410009864.XA CN201410009864A CN103820723A CN 103820723 A CN103820723 A CN 103820723A CN 201410009864 A CN201410009864 A CN 201410009864A CN 103820723 A CN103820723 A CN 103820723A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A cutlery stainless steel material comprises the following chemical element ingredients by mass percentage: 0.3-0.4% of carbon, 0.4-0.6% of silicon, 1.8-2.1% of manganese, 19.3-20.1% of chromium, 1.3-1.6% of molybdenum, 0.06-0.09% of Zr, 0.02-0.04% of Li, 0.06-0.08% of Ba, and the balance of iron and other unavoidable impurities. According to the material, various alloy elements such as chromium are added, the stainless steel has the characteristic of corrosion resistance and has high rigidity, wear resistance and resistance to impact by reasonably controlling a precast treatment temperature and putting in raw materials in batches, and a cutter fabricated by the stainless steel is bright, sharp, rustless and long in service life. A refining agent of the material is used for foundry practice, and can reduce the porosity in a cast by 1-2 degrees, the oxide inclusion is approximately at Level 2, and the yield is obviously increased.
Description
Technical field
The present invention relates to field of alloy material, relate in particular to a kind of Cutlery Stainless Steel material and preparation method thereof.
Background technology
Electric drill is a kind of widely used power tool, is widely used in building, processing and other fields.The cardinal principle of electric drill is the rotation by electric motor, drives and drives apparatus for work, thereby make drill bit scrapings surface to pierce object, and drill bit is one of requisite parts of electric drill.
Drill bit material is mainly rapid steel and Wimet at present, these two kinds of alloy rigidities are high, wear-resisting, red hardness is good, and keep certain toughness, but electric drill in use, often occur fractureing, the easy to wear or buckling phenomenon of blade, drill bit often needs to change, and is mainly because the performances such as the hardness of drill bit material, wear resistance, toughness can not reach balance.
Summary of the invention
The object of the present invention is to provide a kind of Cutlery Stainless Steel material and preparation method thereof, this grinding ball material has advantages of high rigidity, corrosion-resistant, wear-resisting.
Technical scheme of the present invention is as follows:
A kind of Cutlery Stainless Steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.4, silicon 0.4-0.6, manganese 1.8-2.1, chromium 19.3-20.1, molybdenum 1.3-1.6, Zr0.06-0.09, Li0.02-0.04, Ba0.06-0.08, surplus are iron and other inevitable impurity.
The production method of described Cutlery Stainless Steel material, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.4-0.7 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, chromium; (2) manganese, Zr; (3) other remaining components; The each batch of timed interval of dropping into element is 20-23 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 740-760 ℃ by room temperature with 250-260 ℃/h of speed, then be cooled to 620-630 ℃ with 240-250 ℃/h of speed, then be warming up to 920-930 ℃ with 250-260 ℃/h of speed, insulation 3-4 hour; Be cooled to 630-640 ℃ with 240-250 ℃/h of speed again, insulation 50-70 minute, then be cooled to 200-220 ℃ with 240-250 ℃/h of speed, insulation 2-3 hour; Be warming up to 340-350 ℃ with 160-170 ℃/h of speed again, insulation 40-50 minute, then be warming up to 500-510 ℃ with 160-170 ℃/h of speed, insulation 3-4 hour, takes out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part: rhombspar 13-15, clay 30-35, aluminium sesquioxide 2-3, nanometer titanium dioxide 2-3, aluminium powder 1-2, tripoly phosphate sodium STPP 1-2, ferric oxide 2-3, fluorite 6-8, jade powder 3-4, montmorillonite 1-2, trees ashes 1-2, Na
2tiF
68-10; Its preparation method is that rhombspar, clay, fluorite, jade powder, montmorillonite, trees ashes are mixed, be heated to 2500-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
Beneficial effect of the present invention
The present invention has added the multiple alloying elements such as chromium, by reasonable control casting post-processing temperature, throwing raw materials in batches, has increased intensity, the wear resistance of alloy, reduce fragility, by using scrap iron as raw material, make alloy quality homogeneous, make this stainless steel not only there is corrosion resistant feature, and there is high hardness and wear resistance, there is high impact resistance, by the cutter light of its making, sharp, non-corrosive, long service life simultaneously; Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion, 2 grades of left and right, has obviously improved yield rate.
Embodiment
A kind of Cutlery Stainless Steel material, chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.4, silicon 0.4-0.6, manganese 1.8-2.1, chromium 19.3-20.1, molybdenum 1.3-1.6, Zr0.06-0.09, Li0.02-0.04, Ba0.06-0.08, surplus are iron and other inevitable impurity.
The production method of described Cutlery Stainless Steel material is:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.6 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, chromium; (2) manganese, Zr; (3) other remaining components; The each batch of timed interval of dropping into element is 22 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 750 ℃ by room temperature with 255 ℃/h of speed, then be cooled to 625 ℃ with 245 ℃/h of speed, then be warming up to 925 ℃ with 255 ℃/h of speed, be incubated 3.5 hours; Be cooled to 635 ℃ with 245 ℃/h of speed again, be incubated 60 minutes, then be cooled to 210 ℃ with 245 ℃/h of speed, be incubated 2.5 hours; Be warming up to 345 ℃ with 165 ℃/h of speed again, be incubated 45 minutes, then be warming up to 505 ℃ with 165 ℃/h of speed, be incubated 3.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: rhombspar 13, clay 30, aluminium sesquioxide 3, nanometer titanium dioxide 2, aluminium powder 1, tripoly phosphate sodium STPP 2, ferric oxide 3, fluorite 6, jade powder 4, montmorillonite 1, trees ashes 1, Na
2tiF
68; Its preparation method is that rhombspar, clay, fluorite, jade powder, montmorillonite, trees ashes are mixed, be heated to 2500-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
The mechanical property of the Cutlery Stainless Steel material of the present embodiment is: hardness 62HRC, the hardness 57HRC 600 ℃ time, impact absorbing energy 56J, impelling strength 65.6J/cm
2.
Claims (3)
1. a Cutlery Stainless Steel material, is characterized in that: chemical element composition and mass percent thereof that it contains are: carbon 0.3-0.4, silicon 0.4-0.6, manganese 1.8-2.1, chromium 19.3-20.1, molybdenum 1.3-1.6, Zr0.06-0.09, Li0.02-0.04, Ba0.06-0.08, surplus are iron and other inevitable impurity.
2. the production method of Cutlery Stainless Steel material according to claim 1, is characterized in that:
(1), preparing the pig iron and scrap iron originates as ferrous substrate in 1:0.4-0.7 ratio, the pig iron is added to drop in stove and melt, carry out desulfurization, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add scrap iron fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) silicon, chromium; (2) manganese, Zr; (3) other remaining components; The each batch of timed interval of dropping into element is 20-23 minute, after feeding intake, stirs.
3. the production method of Cutlery Stainless Steel material according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 740-760 ℃ by room temperature with 250-260 ℃/h of speed, be cooled to 620-630 ℃ with 240-250 ℃/h of speed again, be warming up to 920-930 ℃ with 250-260 ℃/h of speed again, insulation 3-4 hour; Be cooled to 630-640 ℃ with 240-250 ℃/h of speed again, insulation 50-70 minute, then be cooled to 200-220 ℃ with 240-250 ℃/h of speed, insulation 2-3 hour; Be warming up to 340-350 ℃ with 160-170 ℃/h of speed again, insulation 40-50 minute, then be warming up to 500-510 ℃ with 160-170 ℃/h of speed, insulation 3-4 hour, takes out air cooling and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410009864.XA CN103820723A (en) | 2014-01-09 | 2014-01-09 | Cutlery stainless steel material and preparation method thereof |
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| CN201410009864.XA CN103820723A (en) | 2014-01-09 | 2014-01-09 | Cutlery stainless steel material and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62156254A (en) * | 1985-12-27 | 1987-07-11 | Nippon Kinzoku Kogyo Kk | Ferritic stainless steel hardly undergoing coloring in temper color and having superior rust resistance |
| JPH04246156A (en) * | 1991-01-30 | 1992-09-02 | Nippon Metal Ind Co Ltd | Austenitic stainless steel having tempering coloring resistance, high strength, and high corrosion resistance |
| JPH0681082A (en) * | 1991-05-02 | 1994-03-22 | Takefu Tokushu Kozai Kk | Stainless cutter steel having uniform structure |
| JP2000273587A (en) * | 1999-03-23 | 2000-10-03 | Aichi Steel Works Ltd | Stainless steel for cutting tool, excellent in corrosion resistance, durability of cutting quality, and workability |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN101248204A (en) * | 2005-08-24 | 2008-08-20 | 尤迪霍尔姆工具公司 | Steel alloy and tools or components manufactured out of the steel alloy |
| CN102168226A (en) * | 2011-04-02 | 2011-08-31 | 裘德鑫 | Martensite antibacterial stainless steel and manufacturing method thereof |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
-
2014
- 2014-01-09 CN CN201410009864.XA patent/CN103820723A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62156254A (en) * | 1985-12-27 | 1987-07-11 | Nippon Kinzoku Kogyo Kk | Ferritic stainless steel hardly undergoing coloring in temper color and having superior rust resistance |
| JPH04246156A (en) * | 1991-01-30 | 1992-09-02 | Nippon Metal Ind Co Ltd | Austenitic stainless steel having tempering coloring resistance, high strength, and high corrosion resistance |
| JPH0681082A (en) * | 1991-05-02 | 1994-03-22 | Takefu Tokushu Kozai Kk | Stainless cutter steel having uniform structure |
| JP2000273587A (en) * | 1999-03-23 | 2000-10-03 | Aichi Steel Works Ltd | Stainless steel for cutting tool, excellent in corrosion resistance, durability of cutting quality, and workability |
| CN1518608A (en) * | 2001-05-15 | 2004-08-04 | �����Ƹ���ʽ���� | Ferritic stainless steel and martensitic stainless steel both being excellent in machinability |
| CN101248204A (en) * | 2005-08-24 | 2008-08-20 | 尤迪霍尔姆工具公司 | Steel alloy and tools or components manufactured out of the steel alloy |
| CN102168226A (en) * | 2011-04-02 | 2011-08-31 | 裘德鑫 | Martensite antibacterial stainless steel and manufacturing method thereof |
| CN103088199A (en) * | 2011-11-04 | 2013-05-08 | 上海重型机器厂有限公司 | Heat treatment method after forging for forged steel bearing roller used for large heavy plate mill |
Non-Patent Citations (1)
| Title |
|---|
| 李阳等: "钡处理钢的微观组织和机械性能", 《东北大学学报（自然科学版）》 * |
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Application publication date: 20140528 |
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