CN106435351A - Novel steel nitriding plug and processing process thereof - Google Patents
Novel steel nitriding plug and processing process thereof Download PDFInfo
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- CN106435351A CN106435351A CN201610431028.XA CN201610431028A CN106435351A CN 106435351 A CN106435351 A CN 106435351A CN 201610431028 A CN201610431028 A CN 201610431028A CN 106435351 A CN106435351 A CN 106435351A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- 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
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- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- 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
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a novel steel nitriding plug which is prepared from the following components in percentage by mass: 0.10-0.17 percent of carbon, 0.17-0.37 percent of silicon, 0.30-0.60 percent of manganese, 0-0.035 percent of sulfur, 0-0.035 percent of phosphorus, 0.60-0.90 percent of chromium, 2.75-3.15 percent of nickel, 0-0.030 percent of copper and 0.05-0.11 percent of tantalum. According to the novel steel nitriding plug, with selection of special component proportioning, the strength and toughness of the novel steel nitriding plug are remarkably improved; meanwhile, with addition of a nitriding step in a forging process, the strength, the plasticity and the hardenability of the plug are all improved, thus the requirements on high strength, high hardness and high toughness under the heavy load condition are met, the surface wear resistance is good, the heat treatment deformation is small and the comprehensive mechanical properties are good.
Description
Technical field
The invention belongs to technical field of mechanical equipment is and in particular to a kind of Novel steel nitriding top and its processing technique.
Background technology
Top is typically High Temperature High Pressure, ensures again simultaneously as the indispensable instrument of seamless steel tube production, working environment
Top surface do not have any may impact seamless steel pipe quality flaw, this require top must have high intensity, high rigidity with
The speciality of high tenacity, simultaneously also because of work under bad environment, leads to the high intensity coming directly towards, high rigidity and high tenacity to continue shorter, holds
Being also easy to produce abrasion etc. affects the damage of tube quality.
Content of the invention
For solving the above problems, the invention discloses a kind of Novel steel nitriding top and its processing technique, with for solving
Come directly towards the problem being easily damaged in work process.
A kind of Novel steel nitriding top, includes following component respectively according to mass percent：Carbon：0.10～0.17, silicon：
0.17～0.37, manganese：0.30～0.60, chromium：0.60～0.90, nickel：2.75～3.15, tantalum：0.05～0.11, copper：≤
0.030, sulfur：≤ 0.035, phosphorus：≤0.035.
The manufacture method of above-mentioned top is：
（1）Get the raw materials ready, raw material is checked and accepted：Prepare blank, and take 500g～1500g as sample according to the weight of top, material component
Originally rechecked；
（2）Low temperature shove charge：Shove charge after furnace temperature is down to 100 DEG C～800 DEG C in smelting furnace, blank is arranged in the middle of smelting furnace；
（3）Heating：After heating makes melting in-furnace temperature rise to 1050 DEG C～1150 DEG C for 30～40 minutes, heat time heating time is little for 2～8
When, and it is incubated 30～40 minutes after stopping heating；
（4）Forging blank：By step（3）The instruments such as forge hot external mold, centring ring, drift put into by blank after heating, are processed
Forging, begin 1100 DEG C～1150 DEG C of forging degree, 800 DEG C～1000 DEG C of final forging temperature；
（5）Roughing：Press from both sides step using scroll chuck（4）The large end face of blank after forging, rear drill centers put down by correction car, and
Turner is calibrated to outside blank according to top data, makes top workpiece；
（6）Quenching：By step（5）Top workpiece after processing adds 3～4 hours of heating in glowing furnace, degree in glowing furnace
≤ 200 DEG C, top workpiece is cooled down using oil cooling after being warming up to 780 DEG C～850 DEG C；
（7）Tempering：By step（5）Top workpiece after processing is tempered to 680 DEG C～780 DEG C of temperature, and insulation 1.5～2 is little
When, cooling of coming out of the stove；
（8）Polish, welding：Vehicle Processing program is worked out according to product design document, to top workpiece configurations polish, and in top work
Part interior welds adapter sleeve, polish large end face after welding；
（9）Nitriding：Removing step（8）The grease of top workpiece appearance after processing, rust class, cut, spot etc., and add oxidation
Stove, oxidation furnace initial temperature≤200 DEG C, it is incubated 2～4 hours, cooling of coming out of the stove after being heated to 1000 DEG C～1200 DEG C about
10～14 hours.
As a modification of the present invention, described step（4）After forging, blank is cooled down with the mode of ash cooling, cold
But the time is 3-6 hour.
As a modification of the present invention, described step（7）Top workpiece hardness after processing is 25HRC～28HRC.
As a modification of the present invention, described step（9）Top workpiece hardness after processing is 28HRC～32HRC.
The invention has the beneficial effects as follows：
A kind of Novel steel nitriding top of the present invention, from special composition proportion so as to self-strength, toughness significantly carry
High；The step simultaneously adding nitriding in forging technology, not only increases intensity and the plasticity of top, more enhances top
Quenching degree, meet under heavy load conditions require high intensity, high rigidity and high tenacity requirement, simultaneously surface abrasion resistance good,
Heat treatment deformation is little, has good comprehensive mechanical property.
Specific embodiment
With reference to specific embodiment, it is further elucidated with the present invention it should be understood that following specific embodiment is only used for
The bright present invention rather than restriction the scope of the present invention.
Embodiment 1：
A kind of Novel steel nitriding top, includes following component respectively according to mass percent：Carbon：0.15, silicon：0.29, manganese：
0.45, chromium：0.82, nickel：2.95, tantalum：0.07, copper：0.01, sulfur：0.022, phosphorus：0.01.
The manufacture method of above-mentioned top is：
（1）Get the raw materials ready, raw material is checked and accepted：Prepare blank, and take 1200g to carry out as sample according to the weight of top, material component
Recheck；
（2）Low temperature shove charge：Shove charge after furnace temperature is down to 600 DEG C in smelting furnace, blank is arranged in the middle of smelting furnace；
（3）Heating：After heating makes melting in-furnace temperature rise to 1150 DEG C for 38 minutes, heat time heating time is 6 hours, and after stopping heating
Insulation 40 minutes；
（4）Forging blank：By step（3）The instruments such as forge hot external mold, centring ring, drift put into by blank after heating, are processed
Forging, begin 1150 DEG C of forging degree, 960 DEG C of final forging temperature；After forging, blank is cooled down with the mode of ash cooling, cool time
For 5 hours
（5）Roughing：Press from both sides step using scroll chuck（4）The large end face of blank after forging, rear drill centers put down by correction car, and
Turner is calibrated to outside blank according to top data, makes top workpiece；
（6）Quenching：By step（5）Top workpiece after processing adds 2 hours of heating in glowing furnace, degree 160 in glowing furnace
DEG C, top workpiece is cooled down using oil cooling after being warming up to 830 DEG C；
（7）Tempering：By step（5）Top workpiece after processing is tempered to 720 DEG C of temperature, is incubated 1.5 hours, cooling of coming out of the stove,
Top workpiece hardness after processing is 28HRC；
（8）Polish, welding：Vehicle Processing program is worked out according to product design document, to top workpiece configurations polish, and in top work
Part interior welds adapter sleeve, polish large end face after welding；
（9）Nitriding：Removing step（8）The grease of top workpiece appearance after processing, rust class, cut, spot etc., and add oxidation
Stove, 140 DEG C of oxidation furnace initial temperature, it is incubated 3 hours after being heated to 1200 DEG C about, 11 hours of cooling of coming out of the stove, processing
Top workpiece hardness afterwards is 31HRC.
| Tensile strength（σb/MPa） | Yield strength（σ0.2/MPa） | Elongation percentage（δ/%） | Notched bar impact strength α kv (J/cm2) | |
| Existing method | 680 | 500 | 6 | 65 |
| The inventive method | 810 | 630 | 12 | 80 |
| Increase rate | 19% | 26% | 100% | 23% |
Embodiment 2：
A kind of Novel steel nitriding top, includes following component respectively according to mass percent：Carbon：0.11, silicon：0.29, manganese：
0.55, chromium：0.75, nickel：3.15, tantalum：0.09, sulfur：0.015, phosphorus：0.02.
The manufacture method of above-mentioned top is：
（1）Get the raw materials ready, raw material is checked and accepted：Blank is prepared according to the weight of top, material component, and it is multiple to take 800g to carry out as sample
Inspection；
（2）Low temperature shove charge：Shove charge after furnace temperature is down to 800 DEG C in smelting furnace, blank is arranged in the middle of smelting furnace；
（3）Heating：After heating makes melting in-furnace temperature rise to 1000 DEG C for 30～40 minutes, heat time heating time is 7 hours, and stops adding
It is incubated 32 minutes after heat；
（4）Forging blank：By step（3）The instruments such as forge hot external mold, centring ring, drift put into by blank after heating, are processed
Forging, begin 1150 DEG C of forging degree, and 900 DEG C of final forging temperature is cooled down with the mode of ash cooling to blank after forging, during cooling
Between be 6 hours.；
（5）Roughing：Press from both sides step using scroll chuck（4）The large end face of blank after forging, rear drill centers put down by correction car, and
Turner is calibrated to outside blank according to top data, makes top workpiece；
（6）Quenching：By step（5）Top workpiece after processing adds 4 hours of heating in glowing furnace, degree 140 in glowing furnace
DEG C, top workpiece is cooled down using oil cooling after being warming up to 820 DEG C；
（7）Tempering：By step（5）Top workpiece after processing is tempered to 690 DEG C of temperature, is incubated 1.8 hours, cooling of coming out of the stove,
Top workpiece hardness after processing is 26HRC；
（8）Polish, welding：Vehicle Processing program is worked out according to product design document, to top workpiece configurations polish, and in top work
Part interior welds adapter sleeve, polish large end face after welding；
（9）Nitriding：Removing step（8）The grease of top workpiece appearance after processing, rust class, cut, spot etc., and add oxidation
Stove, 135 DEG C of oxidation furnace initial temperature, it is incubated 3.2 hours after being heated to 1150 DEG C about, 11 hours of cooling of coming out of the stove, plus
Top workpiece hardness after work is 31HRC.
| Tensile strength（σb/MPa） | Yield strength（σ0.2/MPa） | Elongation percentage（δ/%） | Notched bar impact strength α kv (J/cm2) | |
| Existing method | 680 | 500 | 6 | 65 |
| The inventive method | 750 | 580 | 9 | 95 |
| Increase rate | 10% | 16% | 50% | 46% |
Embodiment 3：
A kind of Novel steel nitriding top, includes following component respectively according to mass percent：Carbon：0.13, silicon：0.32, manganese：
0.55, chromium：0.87, nickel：3.05, tantalum：0.07, copper：0.012.
The manufacture method of above-mentioned top is：
（1）Get the raw materials ready, raw material is checked and accepted：Prepare blank, and take 1400g to carry out as sample according to the weight of top, material component
Recheck；
（2）Low temperature shove charge：Shove charge after furnace temperature is down to 720 DEG C in smelting furnace, blank is arranged in the middle of smelting furnace；
（3）Heating：After heating makes melting in-furnace temperature rise to 1150 DEG C for 30～40 minutes, heat time heating time is 7.5 hours, and stops
It is incubated 36 minutes after heating；
（4）Forging blank：By step（3）The instruments such as forge hot external mold, centring ring, drift put into by blank after heating, are processed
Forging, begin 1150 DEG C of forging degree, and 970 DEG C of final forging temperature is cooled down with the mode of ash cooling to blank after forging, during cooling
Between be 4 hours；
（5）Roughing：Press from both sides step using scroll chuck（4）The large end face of blank after forging, rear drill centers put down by correction car, and
Turner is calibrated to outside blank according to top data, makes top workpiece；
（6）Quenching：By step（5）Top workpiece after processing adds 4 hours of heating in glowing furnace, degree 130 in glowing furnace
DEG C, top workpiece is cooled down using oil cooling after being warming up to 815 DEG C；
（7）Tempering：By step（5）Top workpiece after processing is tempered to 760 DEG C of temperature, is incubated 1.8 hours, cooling of coming out of the stove,
Top workpiece hardness after processing is 27HRC；
（8）Polish, welding：Vehicle Processing program is worked out according to product design document, to top workpiece configurations polish, and in top work
Part interior welds adapter sleeve, polish large end face after welding；
（9）Nitriding：Removing step（8）The grease of top workpiece appearance after processing, rust class, cut, spot etc., and add oxidation
Stove, 120 DEG C of oxidation furnace initial temperature, it is incubated 4 hours after being heated to 1200 DEG C about, 12 hours of cooling of coming out of the stove, after processing
Top workpiece hardness be 30HRC.
| Tensile strength（σb/MPa） | Yield strength（σ0.2/MPa） | Elongation percentage（δ/%） | Notched bar impact strength α kv (J/cm2) | |
| Existing method | 680 | 500 | 6 | 65 |
| The inventive method | 800 | 650 | 8 | 85 |
| Increase rate | 18% | 30% | 33% | 31% |
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned embodiment, also include
The technical scheme being made up of above technical characteristic combination in any.
Claims (5)
1. a kind of Novel steel nitriding top it is characterised in that：Described top composition includes according to mass percent respectively with the following group
Part：Carbon：0.10～0.17, silicon：0.17～0.37, manganese：0.30～0.60, chromium：0.60～0.90, nickel：2.75～3.15, tantalum：
0.05～0.11, copper：≤ 0.030, sulfur：≤ 0.035, phosphorus：≤0.035.
2. a kind of Novel steel nitriding top according to claim 1 it is characterised in that：The manufacture method of described top is：
（1）Get the raw materials ready, raw material is checked and accepted：Prepare blank, and take 500g～1500g as sample according to the weight of top, material component
Originally rechecked；
（2）Low temperature shove charge：Shove charge after furnace temperature is down to 100 DEG C～800 DEG C in smelting furnace, blank is arranged in the middle of smelting furnace；
（3）Heating：After heating makes melting in-furnace temperature rise to 1050 DEG C～1150 DEG C for 30～40 minutes, heat time heating time is little for 2～8
When, and it is incubated 30～40 minutes after stopping heating；
（4）Forging blank：By step（3）The instruments such as forge hot external mold, centring ring, drift put into by blank after heating, are processed
Forging, begin 1100 DEG C～1150 DEG C of forging degree, 800 DEG C～1000 DEG C of final forging temperature；
（5）Roughing：Press from both sides step using scroll chuck（4）The large end face of blank after forging, rear drill centers put down by correction car, and
Turner is calibrated to outside blank according to top data, makes top workpiece；
（6）Quenching：By step（5）Top workpiece after processing adds 3～4 hours of heating in glowing furnace, degree in glowing furnace
≤ 200 DEG C, top workpiece is cooled down using oil cooling after being warming up to 780 DEG C～850 DEG C；
（7）Tempering：By step（5）Top workpiece after processing is tempered to 680 DEG C～780 DEG C of temperature, and insulation 1.5～2 is little
When, cooling of coming out of the stove；
（8）Polish, welding：Vehicle Processing program is worked out according to product design document, to top workpiece configurations polish, and in top work
Part interior welds adapter sleeve, polish large end face after welding；
（9）Nitriding：Removing step（8）The grease of top workpiece appearance after processing, rust class, cut, spot etc., and add oxidation
Stove, oxidation furnace initial temperature≤200 DEG C, it is incubated 2～4 hours, cooling of coming out of the stove after being heated to 1000 DEG C～1200 DEG C about
10～14 hours.
3. a kind of Novel steel nitriding top according to claim 2 it is characterised in that：Described step（4）To base after forging
Material is cooled down with the mode of ash cooling, and cool time is 3-6 hour.
4. a kind of Novel steel nitriding top according to claim 2 it is characterised in that：Described step（7）Top after processing
Head workpiece hardness is 25HRC～28HRC.
5. a kind of Novel steel nitriding top according to claim 1 it is characterised in that：Described step（9）Top after processing
Head workpiece hardness is 28HRC～32HRC.
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| CN201610431028.XA CN106435351B (en) | 2016-06-17 | 2016-06-17 | A kind of steel nitriding top and its processing technology |
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| CN201610431028.XA CN106435351B (en) | 2016-06-17 | 2016-06-17 | A kind of steel nitriding top and its processing technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102089452A (en) * | 2009-05-15 | 2011-06-08 | 新日本制铁株式会社 | Steel for nitrocarburizing and nitrocarburized parts |
| CN102597543A (en) * | 2009-09-10 | 2012-07-18 | 独立行政法人物质·材料研究机构 | High-strength bolt |
| CN103180476A (en) * | 2010-10-20 | 2013-06-26 | 新日铁住金株式会社 | Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold-forged/nitrided component |
| CN104254628A (en) * | 2012-04-02 | 2014-12-31 | 新日铁住金株式会社 | Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold forged/nitrided member |
| CN105579607A (en) * | 2013-09-13 | 2016-05-11 | 伊顿公司 | Wear resistant alloy |
| CN105861936A (en) * | 2016-05-10 | 2016-08-17 | 杜树芳 | Heat treatment method for age hardening type nitriding gear steel |
-
2016
- 2016-06-17 CN CN201610431028.XA patent/CN106435351B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102089452A (en) * | 2009-05-15 | 2011-06-08 | 新日本制铁株式会社 | Steel for nitrocarburizing and nitrocarburized parts |
| CN102597543A (en) * | 2009-09-10 | 2012-07-18 | 独立行政法人物质·材料研究机构 | High-strength bolt |
| CN103180476A (en) * | 2010-10-20 | 2013-06-26 | 新日铁住金株式会社 | Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold-forged/nitrided component |
| CN104254628A (en) * | 2012-04-02 | 2014-12-31 | 新日铁住金株式会社 | Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold forged/nitrided member |
| CN105579607A (en) * | 2013-09-13 | 2016-05-11 | 伊顿公司 | Wear resistant alloy |
| CN105861936A (en) * | 2016-05-10 | 2016-08-17 | 杜树芳 | Heat treatment method for age hardening type nitriding gear steel |
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| CN106435351B (en) | 2018-05-18 |
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