CN105937015A - High-strength bolt and preparation method thereof - Google Patents
High-strength bolt and preparation method thereof Download PDFInfo
- Publication number
- CN105937015A CN105937015A CN201610398322.5A CN201610398322A CN105937015A CN 105937015 A CN105937015 A CN 105937015A CN 201610398322 A CN201610398322 A CN 201610398322A CN 105937015 A CN105937015 A CN 105937015A
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- China
- Prior art keywords
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- strength bolt
- gypsum
- main material
- bolt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- 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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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- 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 Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Forging (AREA)
Abstract
The invention discloses a high-strength bolt which comprises a main material and an auxiliary material, wherein the main material comprises 60-80% of Fe and 20-40% of gypsum whiskers; and the auxiliary material comprises the following components in percentage by mass of the main material: 0.40%-0.45% of C, 0.20%-0.30% of Si, 0.50%-0.70% of W, 0.80%-0.90% of Mn, 0-0.015% of P and 0.90%-1.00% of Cr. A preparation method of the high-strength bolt comprises the following steps: (1) solid solution cooling; (2) cold-heading forming; (3) recrystallization annealing; and (4) stress-release tempering. The bolt provided by the invention has high strength and is low in preparation cost.
Description
Technical field
The present invention relates to bolt of a kind of high intensity and preparation method thereof, particularly to incoloy925 bolt.
Background technology
Bolt all can be applied in industry and daily life, the range of bolt is wide, field the most very extensive of application, the physical and chemical performance of bolt is required the most different by every field, at present, the topmost physical property of bolt is intensity, also needs to there is the resistance to elevated temperatures of bolt certain requirement in the place of some work in hot environments；The topmost chemical property of bolt is its decay resistance, and long-term is exposed to outside, and bolt is easy to be corroded, and then causes the unfavorable factors such as potential safety hazard.At present, bolt, in order to increase intensity, can add the Materials with High Strength such as titanium, molybdenum preparing bolt when, but the cost of these materials is the highest, and the cost of batch production preparation is too big, is unfavorable for that enterprise reduces the production cost of enterprise while ensureing quality.
Summary of the invention
In place of above-mentioned the deficiencies in the prior art, the problem that the present invention solves is: the present invention provides the bolt of a kind of high intensity, reduces the production cost of enterprise simultaneously.
For solving the problems referred to above, the technical scheme that the present invention takes is as follows:
A kind of high-strength bolt, including main material and auxiliary material；Described main material includes 60～the ferrum of 80% and 20～the crystal whisker of gypsum of 40%；The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.40%～0.45%, silicone content 0.20%～0.30%, W content 0.50%～0.70%, Fe content 0.80%～0.90%, phosphorus content≤0.015%, chromium content 0.90%～1.00%, nickel content 3～5%.
Further, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.
Further, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.
Further, described main material includes 70～the ferrum of 75% and 25～the crystal whisker of gypsum of 30%.
Further, described W content is 0.60%～0.65%.
The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 900～1000 DEG C, insulation 4～5h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 720-750 DEG C, is incubated 2-3h.
Further, in described step (3), the temperature of recrystallization annealing is 980 DEG C.
Further, in described step (4), the temperature of destressing tempering is 740 DEG C.
Beneficial effects of the present invention
The present invention adds crystal whisker of gypsum in main material, crystal whisker of gypsum is to use to compare material widely in construction material, the present invention is rationally provided with crystal whisker of gypsum component in main material, the addition of crystal whisker of gypsum makes the high intensity level that the intensity of bolt is the same with existing holding, owing to crystal whisker of gypsum can be prepared, so the use of crystal whisker of gypsum greatly reduces the production cost of enterprise's bolt by the useless product Gypsum Fibrosum of industry.The present invention adds tungsten in auxiliary material, is improved the high temperature strength of bolt by tungsten.
Detailed description of the invention
Below present invention is described in further detail.
Embodiment 1
A kind of high-strength bolt, including main material and auxiliary material.Described main material includes the ferrum of 65% and the crystal whisker of gypsum of 35%.The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.40%, silicone content 0.20%, W content 0.50%, Fe content 0.80%, phosphorus content≤0.015%, chromium content 0.90%, nickel content 3%.Further preferably, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.Further preferably, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 900 DEG C, insulation 4h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 720 DEG C, is incubated 2h.
Embodiment 2
A kind of high-strength bolt, including main material and auxiliary material.Described main material includes the ferrum of 75% and the crystal whisker of gypsum of 25%.The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.43%, silicone content 0.25%, W content 0.6%, Fe content 0.85%, phosphorus content≤0.015%, chromium content 0.95%, nickel content 4%.Further preferably, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.Further preferably, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 980 DEG C, insulation 4.5h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 740 DEG C, is incubated 2.5h.
Embodiment 3
A kind of high-strength bolt, including main material and auxiliary material.Described main material includes the ferrum of 80% and the crystal whisker of gypsum of 20%.The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.45%, silicone content 0.30%, W content 0.70%, Fe content 0.90%, phosphorus content≤0.015%, chromium content 1.00%, nickel content 5%.Further preferably, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.Further preferably, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 1000 DEG C, insulation 5h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 750 DEG C, is incubated 3h.
Comparative example 1
A kind of high-strength bolt, including main material and auxiliary material.Described main material includes the ferrum of 80% and the titanium of 20%.The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.45%, silicone content 0.30%, W content 0.70%, Fe content 0.90%, phosphorus content≤0.015%, chromium content 1.00%.Further preferably, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.Further preferably, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 1000 DEG C, insulation 5h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 750 DEG C, is incubated 3h.
Comparative example 2
A kind of high-strength bolt, including main material and auxiliary material.Described main material includes the ferrum of 75% and the titanium of 25%.The mass percent that described auxiliary material component and auxiliary material account for main material is as follows: carbon content 0.45%, silicone content 0.30%, W content 0.70%, Fe content 0.90%, phosphorus content≤0.015%, chromium content 1.00%.Further preferably, a length of 50～100 μm of described crystal whisker of gypsum, a diameter of 1～4 μm.Further preferably, described crystal whisker of gypsum is produced Gypsum Fibrosum by Industry Waste and is prepared from.The preparation method of a kind of high-strength bolt, step is as follows: (1) solid Rong cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h, then pass through air cooling；(2) cold-heading molding: in two moulds two rush or on double blow solid die cold header, cold-heading goes out bolt head and bar portion；(3) recrystallization annealing: temperature 1000 DEG C, insulation 5h, uses equipment RQ3-90-9D, uses methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h protection, drip control formula device and control；(4) destressing tempering: temperature 750 DEG C, is incubated 3h.
Following table is performance and cost synopsis:
Knowable to form as above, the intensity comparison of tensile strength and yield strength and comparative example 1,2 that the present invention prepares incoloy925 bolt does not differs from how many, but the cost of the present invention has but obtained great reduction, while keeping the intensity of the present invention, greatly reduce production cost, beneficially the production in enormous quantities of enterprise.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. a high-strength bolt, it is characterised in that include main material and auxiliary material；Described main material includes 60～80%
Ferrum and 20～the crystal whisker of gypsum of 40%；Described auxiliary material component and auxiliary material account for the percent mass of main material such as
Under: carbon content 0.40%～0.45%, silicone content 0.20%～0.30%, W content 0.50%～0.70%,
Fe content 0.80%～0.90%, phosphorus content≤0.015%, chromium content 0.90%～1.00%, nickel content 3～
5%.
High-strength bolt the most according to claim 1, it is characterised in that described crystal whisker of gypsum
A length of 50～100 μm, a diameter of 1～4 μm.
High-strength bolt the most according to claim 1, it is characterised in that described crystal whisker of gypsum is produced by Industry Waste
Gypsum Fibrosum is prepared from.
High-strength bolt the most according to claim 1, it is characterised in that described main material includes 70～75%
Ferrum and 25～the crystal whisker of gypsum of 30%.
High-strength bolt the most according to claim 1, it is characterised in that described W content be 0.60%～
0.65%.
6. the preparation method of a high-strength bolt according to claim 1, it is characterised in that step is as follows:
(1) solid Rong's cooling: major ingredient and adjuvant are proportionally blended in the environment of 1000 DEG C insulation 1.5h,
Then air cooling is passed through；(2) cold-heading molding: rush or on double blow solid die cold header, cold-heading goes out at two moulds two
The head of bolt and bar portion；(3) recrystallization annealing: temperature 900～1000 DEG C, insulation 4～5h, makes
Use equipment RQ3-90-9D, use methanol 20-40d/min and ammonia 0.15L/h or nitrogen 0.30L/h to protect
Protect, drip control formula device and control；(4) destressing tempering: temperature 720-750 DEG C, is incubated 2-3h.
The preparation method of high-strength bolt the most according to claim 6, it is characterised in that described step (3)
The temperature of middle recrystallization annealing is 980 DEG C.
The preparation method of high-strength bolt the most according to claim 6, it is characterised in that described step (4)
The temperature of middle destressing tempering is 740 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398322.5A CN105937015A (en) | 2016-06-07 | 2016-06-07 | High-strength bolt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398322.5A CN105937015A (en) | 2016-06-07 | 2016-06-07 | High-strength bolt and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105937015A true CN105937015A (en) | 2016-09-14 |
Family
ID=57151848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610398322.5A Pending CN105937015A (en) | 2016-06-07 | 2016-06-07 | High-strength bolt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105937015A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287404A (en) * | 2017-07-01 | 2017-10-24 | 贵州航天精工制造有限公司 | A kind of GH159 bolt heads processing method |
| CN107794469A (en) * | 2017-11-15 | 2018-03-13 | 江苏和信石油机械有限公司 | A kind of high strength alloy steel |
| CN108176954A (en) * | 2017-12-15 | 2018-06-19 | 浙江天力机车部件有限公司 | The forming technology of fastener |
| CN111383861A (en) * | 2018-12-28 | 2020-07-07 | 东莞科力线材技术有限公司 | Magnetic conductive material for electromagnetic relay and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570181A (en) * | 2003-03-24 | 2005-01-26 | 大同特殊钢株式会社 | Low alloy high speed tool steel having constant toughness |
| CN101243197A (en) * | 2005-10-31 | 2008-08-13 | 杰富意钢铁株式会社 | High-strength steel excellent in delayed fracture resistance characteristics and metal bolts |
| CN101397634A (en) * | 2008-09-05 | 2009-04-01 | 杭州钢铁集团公司 | Atmospheric corrosion resistant 08CrNiCu low-alloy high intensity non-annealed cold-forging steel and production process |
| CN102094153A (en) * | 2011-03-02 | 2011-06-15 | 上海工程技术大学 | High-strength high-toughness alloy steel for bolts and preparation method thereof |
| CN102260831A (en) * | 2011-07-08 | 2011-11-30 | 曾美霞 | Fastener, such as screw bolt, screw nut and the like made from high-strength steel |
| CN103014551A (en) * | 2011-09-22 | 2013-04-03 | 兴化市新迅达不锈钢标准件有限公司 | Novel high-temperature alloy heat-resistant stainless steel bolt and production process thereof |
| CN104975244A (en) * | 2015-05-14 | 2015-10-14 | 宁波汇通机械联接件有限公司 | Thread type pipe joint and preparation method thereof |
-
2016
- 2016-06-07 CN CN201610398322.5A patent/CN105937015A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570181A (en) * | 2003-03-24 | 2005-01-26 | 大同特殊钢株式会社 | Low alloy high speed tool steel having constant toughness |
| CN101243197A (en) * | 2005-10-31 | 2008-08-13 | 杰富意钢铁株式会社 | High-strength steel excellent in delayed fracture resistance characteristics and metal bolts |
| CN101397634A (en) * | 2008-09-05 | 2009-04-01 | 杭州钢铁集团公司 | Atmospheric corrosion resistant 08CrNiCu low-alloy high intensity non-annealed cold-forging steel and production process |
| CN102094153A (en) * | 2011-03-02 | 2011-06-15 | 上海工程技术大学 | High-strength high-toughness alloy steel for bolts and preparation method thereof |
| CN102260831A (en) * | 2011-07-08 | 2011-11-30 | 曾美霞 | Fastener, such as screw bolt, screw nut and the like made from high-strength steel |
| CN103014551A (en) * | 2011-09-22 | 2013-04-03 | 兴化市新迅达不锈钢标准件有限公司 | Novel high-temperature alloy heat-resistant stainless steel bolt and production process thereof |
| CN104975244A (en) * | 2015-05-14 | 2015-10-14 | 宁波汇通机械联接件有限公司 | Thread type pipe joint and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭泰民: "《工业副产石膏应用技术》", 31 January 2010, 中国建材工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287404A (en) * | 2017-07-01 | 2017-10-24 | 贵州航天精工制造有限公司 | A kind of GH159 bolt heads processing method |
| CN107794469A (en) * | 2017-11-15 | 2018-03-13 | 江苏和信石油机械有限公司 | A kind of high strength alloy steel |
| CN108176954A (en) * | 2017-12-15 | 2018-06-19 | 浙江天力机车部件有限公司 | The forming technology of fastener |
| CN111383861A (en) * | 2018-12-28 | 2020-07-07 | 东莞科力线材技术有限公司 | Magnetic conductive material for electromagnetic relay and preparation method thereof |
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Application publication date: 20160914 |
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