CN106987784B - A kind of carburizing steel - Google Patents
A kind of carburizing steel Download PDFInfo
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- CN106987784B CN106987784B CN201710255726.3A CN201710255726A CN106987784B CN 106987784 B CN106987784 B CN 106987784B CN 201710255726 A CN201710255726 A CN 201710255726A CN 106987784 B CN106987784 B CN 106987784B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 238000005255 carburizing Methods 0.000 title claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 229910000720 Silicomanganese Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims 1
- 238000010583 slow cooling Methods 0.000 claims 1
- 229910052735 hafnium Inorganic materials 0.000 abstract description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000306 component Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
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)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of carburizing steel, its chemical component mass percent are as follows: C0.16-0.24%, Si0.48-0.60%, Mn0.84-1.10%, Ni0.30-0.40%, Cr1.80-2.50%, Ti0.07-0.14%, B0.0005-0.009%, Hf0.15-0.23%, Mo0.18-0.28%, surplus are Fe and inevitable impurity.Carburizing steel of the invention purifies steel ingot using electroslag remelting, then using the cooling steel ingot of the faster air natural cooling of cooling velocity, finally using High temperature diffusion to ingot annealing, refine ingot structure, three step cooperations can effectively inhibit ingotism, in addition, the addition of hafnium element, it can also inhibit carburizing steel ingotism to a certain extent, improve carburizing steel ingot quality.
Description
Technical field
The present invention relates to gold metallurgy industry steelmaking technical field more particularly to a kind of carburizing steel.
Background technique
Carburizing steel is that can be subjected to carburizing and quenching to improve surface hardness and wearability and the appropriate intensity of center portion holding and toughness
Steel.Carburizing steel is mainly for the manufacture of parts such as gear, cam, piston pins.In production, often there is steel in existing carburizing steel
Ingot is segregated situation, so that the mechanical performance of steel ingot is uneven, how toughness, corrosion resistance decline inhibits to seep in process of production
The ingotism of carbon steel is the technical problems to be solved by the invention.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of carburizing steel that can inhibit ingotism in production.
The present invention is realized by following technological means solves above-mentioned technical problem:
A kind of carburizing steel, chemical component mass percent are as follows: C0.16-0.24%, Si0.48-0.60%, Mn0.84-
1.10%, Ni0.30-0.40%, Cr1.80-2.50%, Ti0.07-0.14%, B0.0005-0.009%, Hf0.15-
0.23%, Mo0.18-0.28%, surplus are Fe and inevitable impurity；The preparation method of above-mentioned carburizing steel includes following step
It is rapid:
(1) electric furnace smelting adjusts the content of each element in molten steel, no slag or few slag tapping, carries out pre-deoxidation using silicomanganese；
(2) external refining pours into the molten steel after smelting in ladle, be added refining agent, to molten steel carry out deoxidation, remove slag and
Purification；
(3) molten steel refined is poured into vacuum deaerator plant and is sufficiently deaerated by vacuum outgas, Fruit storage
Into chemical component and steel, gas content meets the requirements, and then pours into ingot mould molten steel and solidifies；
(4) it demoulds, steel ingot is made in demoulding after the molten steel in ingot mould solidifies completely；
(5) steel ingot is hung in and carries out electroslag remelting in electroslag furnace by electroslag remelting, and various auxiliary materials are added and carry out to steel ingot
It purifies again, steel ingot is then deposited in dry lee, in air natural cooling；
(6) it anneals, high temperature diffusion annealing is carried out to steel ingot, steel ingot internal stress is sufficiently eliminated, refines ingot structure；
(7) carburizing carries out Surface hardening treatment, 940 DEG C of -980 DEG C of carburizings, carbon-potential control range 1.1- using carburization process
0.4%, carburizing thickness 1.4mm-2.2mm；
(8) Heat-Treatment of Steel then carries out -80 DEG C using 1000 DEG C of -1150 DEG C of oil quenchings -- the depth of 100 DEG C of temperature ranges
Cold treatment process, and pass through 500 DEG C of -530 DEG C of temperings.
The present invention has the advantages that carburizing steel of the invention purifies steel ingot using electroslag remelting, then using cold
But the cooling steel ingot of the air natural cooling of fast speed refines ingot structure finally using High temperature diffusion to ingot annealing, and three
Step cooperation can effectively inhibit ingotism, in addition, the addition of hafnium element, can also inhibit to a certain extent carburizing steel ingot inclined
Analysis improves carburizing steel ingot quality.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in the embodiment of the present invention
Technical solution is clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than complete
The embodiment in portion.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.
A kind of carburizing steel, chemical component mass percent are as follows: C0.20%, Si0.54%, Mn0.92%, Ni0.35%,
Cr2.20%, Ti0.10%, B0.003%, Hf0.19%, Mo0.23%, surplus are Fe and inevitable impurity, can not be kept away
It include P≤0.04%, S≤0.04%, N≤0.04%, oxygen O≤0.05% in the impurity exempted from；The preparation method of above-mentioned carburizing steel
The following steps are included:
(1) electric furnace smelting adjusts the content of each element in molten steel, no slag or few slag tapping, carries out pre-deoxidation using silicomanganese；
(2) external refining pours into the molten steel after smelting in ladle, be added refining agent, to molten steel carry out deoxidation, remove slag and
Purification；
(3) molten steel refined is poured into vacuum deaerator plant and is sufficiently deaerated by vacuum outgas, Fruit storage
Into chemical component and steel, gas content meets the requirements, and then pours into ingot mould molten steel and solidifies；
(4) it demoulds, steel ingot is made in demoulding after the molten steel in ingot mould solidifies completely；
(5) steel ingot is hung in and carries out electroslag remelting in electroslag furnace by electroslag remelting, and various auxiliary materials are added and carry out to steel ingot
It purifies again, steel ingot is then deposited in dry lee, in air natural cooling；
(6) it anneals, high temperature diffusion annealing is carried out to steel ingot, steel ingot internal stress is sufficiently eliminated, refines ingot structure；
(7) carburizing carries out Surface hardening treatment, 960 DEG C of carburizings, carbon-potential control range 0.7%, carburizing using carburization process
Thickness 1.8mm；
(8) Heat-Treatment of Steel then carries out the cryogenic treatment process of -90 DEG C of temperature ranges using 1100 DEG C of oil quenchings, and passes through
Cross 520 DEG C of temperings.
Carburizing steel of the invention purifies steel ingot using electroslag remelting, then certainly using the faster air of cooling velocity
So cooling steel ingot finally refines ingot structure to ingot annealing using High temperature diffusion, and three step cooperations can effectively press down
Ingotism processed improves carburizing steel ingot in addition, the addition of hafnium element, can also inhibit carburizing steel ingotism to a certain extent
Quality.
The mechanical and physical performance of carburizing steel made from the present embodiment is as shown in the table.
It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (1)
1. a kind of carburizing steel, which is characterized in that the chemical component mass percent of the carburizing steel are as follows: C0.16-0.24%,
Si0.48-0.60%, Mn0.84-1.10%, Ni0.30-0.40%, Cr1.80-2.50%, Ti0.07-0.14%,
B0.0005-0.009%, Hf0.15-0.23%, Mo0.18-0.28%, surplus are Fe and inevitable impurity；The carburizing
The preparation method of steel the following steps are included:
(1) electric furnace smelting adjusts the content of each element in molten steel, no slag or few slag tapping, carries out pre-deoxidation using silicomanganese；
(2) external refining pours into the molten steel after smelting in ladle, and refining agent is added, and carries out deoxidation to molten steel, removes slag and only
Change；
(3) molten steel refined is poured into vacuum deaerator plant and is sufficiently deaerated by vacuum outgas, Fruit storage to change
Study point and steel in gas content meet the requirements, then molten steel is poured into ingot mould and is solidified；
(4) it demoulds, steel ingot is made in demoulding after the molten steel in ingot mould solidifies completely；
(5) steel ingot is hung in and carries out electroslag remelting in electroslag furnace by electroslag remelting, and various auxiliary materials are added and carry out again to steel ingot
Then steel ingot is embedded to slow cooling in sand pit by purification；
(6) it anneals, high temperature diffusion annealing is carried out to steel ingot；
(7) carburizing carries out Surface hardening treatment, 940 DEG C of -980 DEG C of carburizings, carbon-potential control range 1.1- using carburization process
0.4%, carburizing thickness 1.4mm-2.2mm；
(8) Heat-Treatment of Steel then carries out -80 DEG C using 1000 DEG C of -1150 DEG C of oil quenchings -- at the deep cooling of 100 DEG C of temperature ranges
Science and engineering skill, and pass through 500 DEG C of -530 DEG C of temperings.
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| CN201710255726.3A CN106987784B (en) | 2017-04-19 | 2017-04-19 | A kind of carburizing steel |
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| CN109283311A (en) * | 2018-08-22 | 2019-01-29 | 邯郸钢铁集团有限责任公司 | The method of qualitative detection piston pin steel hairline and segregation |
| CN111979494B (en) * | 2020-08-28 | 2021-11-12 | 东风商用车有限公司 | Ti-containing carburizing steel for thin-wall annular gear, manufacturing method thereof and thin-wall annular gear forming method |
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|---|---|---|---|---|
| CN1526836A (en) * | 2003-03-04 | 2004-09-08 | ��ʽ����С�������� | Rolling parts and producing process thereof |
| JP2015127434A (en) * | 2013-12-27 | 2015-07-09 | 株式会社神戸製鋼所 | Case hardened steel with excellent crystal grain coarsening prevention characteristic at carburization treatment |
| JP2016188422A (en) * | 2015-03-30 | 2016-11-04 | 株式会社神戸製鋼所 | Carburized component |
| JP2016188421A (en) * | 2015-03-30 | 2016-11-04 | 株式会社神戸製鋼所 | Carburized component |
| JP2016204752A (en) * | 2015-04-22 | 2016-12-08 | Ｊｆｅスチール株式会社 | Case-hardened steel and production method thereof |
-
2017
- 2017-04-19 CN CN201710255726.3A patent/CN106987784B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526836A (en) * | 2003-03-04 | 2004-09-08 | ��ʽ����С�������� | Rolling parts and producing process thereof |
| JP2015127434A (en) * | 2013-12-27 | 2015-07-09 | 株式会社神戸製鋼所 | Case hardened steel with excellent crystal grain coarsening prevention characteristic at carburization treatment |
| JP2016188422A (en) * | 2015-03-30 | 2016-11-04 | 株式会社神戸製鋼所 | Carburized component |
| JP2016188421A (en) * | 2015-03-30 | 2016-11-04 | 株式会社神戸製鋼所 | Carburized component |
| JP2016204752A (en) * | 2015-04-22 | 2016-12-08 | Ｊｆｅスチール株式会社 | Case-hardened steel and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "齿轮用钢及其发展";陆树荪等;《传动技术》;19910402;第44-47页 |
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Denomination of invention: Gear thermal precision forging machining process adopting carburizing steel 20CrMnTi as material Effective date of registration: 20200326 Granted publication date: 20190101 Pledgee: Jiangsu Jiangyin Rural Commercial Bank branch Dangtu Limited by Share Ltd. Pledgor: MAANSHAN XINLONG SPECIAL STEEL Co.,Ltd. Registration number: Y2020980001043 |
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Date of cancellation: 20220721 Granted publication date: 20190101 Pledgee: Jiangsu Jiangyin Rural Commercial Bank branch Dangtu Limited by Share Ltd. Pledgor: MAANSHAN XINLONG SPECIAL STEEL Co.,Ltd. Registration number: Y2020980001043 |
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Denomination of invention: a carburized steel Effective date of registration: 20220801 Granted publication date: 20190101 Pledgee: Jiangsu Jiangyin Rural Commercial Bank branch Dangtu Limited by Share Ltd. Pledgor: MAANSHAN XINLONG SPECIAL STEEL Co.,Ltd. Registration number: Y2022980011677 |
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Date of cancellation: 20230711 Granted publication date: 20190101 Pledgee: Jiangsu Jiangyin Rural Commercial Bank branch Dangtu Limited by Share Ltd. Pledgor: MAANSHAN XINLONG SPECIAL STEEL Co.,Ltd. Registration number: Y2022980011677 |