CN107723440A - A kind of Technology for Heating Processing of high-hardness stainless steel bolt - Google Patents
A kind of Technology for Heating Processing of high-hardness stainless steel bolt Download PDFInfo
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- CN107723440A CN107723440A CN201711001626.4A CN201711001626A CN107723440A CN 107723440 A CN107723440 A CN 107723440A CN 201711001626 A CN201711001626 A CN 201711001626A CN 107723440 A CN107723440 A CN 107723440A
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- product
- annealing
- stainless steel
- furnace
- technology
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Classifications
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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
- 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
- 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
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of Technology for Heating Processing of high-hardness stainless steel bolt, specifically comprise the following steps：The pre-heat treatment is first carried out to product using flame gun torch, preheating temperature is 160 180 DEG C；The product after preheating is put into annealing furnace again and made annealing treatment, the annealing temperature is 740 760 DEG C, and annealing time is 2.5 3.5h, is taken out after then cooling to 350 400 DEG C with the furnace, is put in air and cools down 2 3h；Then product is put into high temperature furnace, 30 50min are incubated after being heated to 820 860 DEG C, product oil cooling is further taken out, then places into product in high temperature furnace, 45 75min are incubated after being heated to 580 640 DEG C, product water cooling is further taken out, finally product is put into alkaline solution and carries out processing of scaling, the time of scaling is 5 15min, through the above way, the present invention can greatly improve the case hardness of stainless steel bolt after heat treatment, and use quality is high, service life length.
Description
Technical field
The present invention relates to a kind of Technology for Heating Processing, more particularly to a kind of Technology for Heating Processing of high-hardness stainless steel bolt.
Background technology
With the continuous emergence of science and technology, automobile industry also constantly emerges, caused for supporting in automobile industry
The demand of various product also improves constantly, and bolt is as one of accessory essential in automobile industry, its quantity required
And requirement quality is largely increased, and for each part of automobile, the especially strength character to bolt used in automobile tire
It is required that extremely strict, Technology for Heating Processing is single used by automobile tire bolt in the market, mostly only with once quenching
Fire, the technique being once tempered, this kind of Technology for Heating Processing not only obtained product hardness, intensity deficiency, and scrappage is higher.
The content of the invention
The present invention solves the technical problem of provide a kind of Technology for Heating Processing of high-hardness stainless steel bolt, Neng Gou great
Width improves the case hardness of stainless steel bolt after heat treatment, and use quality is high, service life length.
In order to solve the above technical problems, one aspect of the present invention is：A kind of high-hardness stainless steel spiral shell is provided
The Technology for Heating Processing of bolt, specifically comprises the following steps：
（1）Preheating：The pre-heat treatment is carried out to product using flame gun torch, preheating temperature is 160-180 DEG C；
（2）Annealing：Product after preheating is put into annealing furnace and made annealing treatment, the annealing temperature is 740-760
DEG C, annealing time 2.5-3.5h, taken out after then cooling to 350-400 DEG C with the furnace, be put in air and cool down 2-3h；
（3）Modifier treatment：First product is put into high temperature furnace, 30-50min is incubated after being heated to 820-860 DEG C, further takes out product
Oil cooling, then product is placed into high temperature furnace, 45-75min is incubated after being heated to 580-640 DEG C, further take out product water cooling.
（4）Scale：Product is put into alkaline solution and carries out processing of scaling, the time of scaling is 5-15min.
In a preferred embodiment of the present invention, the step（3）In high temperature furnace in have methanol protective atmosphere, for controlling
Carbon content in product processed.
In a preferred embodiment of the present invention, the step（3）In oil cooling use temperature as 40-60 DEG C of quenching
Oil.
In a preferred embodiment of the present invention, the step（4）In alkaline solution be that concentration is 7% sodium hydroxide water
Solution.
The beneficial effects of the invention are as follows：A kind of Technology for Heating Processing of high-hardness stainless steel bolt of the present invention, is changed by optimization
Entered technological process, specially successively using preheating, annealing, modifier treatment, scale by the way of, and use rational technological parameter
Cooperation processing is carried out, the case hardness of stainless steel bolt after heat treatment finally greatly improved, use quality is high, service life
It is long.
Embodiment
Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that apparent clearly defined so as to be made to protection scope of the present invention.
Embodiment 1：
A kind of Technology for Heating Processing of high-hardness stainless steel bolt, specifically comprises the following steps：
（1）Preheating：The pre-heat treatment is carried out to product using flame gun torch, preheating temperature is 160 DEG C；
（2）Annealing：Product after preheating is put into annealing furnace and made annealing treatment, the annealing temperature is 740 DEG C, is moved back
The fiery time is 3.5h, is taken out after then cooling to 400 DEG C with the furnace, is put in air and cools down 2h；
（3）Modifier treatment：First product is put into high temperature furnace, 50min is incubated after being heated to 820 DEG C, product oil cooling is further taken out, connects
And place into product in high temperature furnace, 45min is incubated after being heated to 640 DEG C, further take out product water cooling.
（4）Scale：Product is put into alkaline solution and carries out processing of scaling, the time of scaling is 5min.
Embodiment 2：
A kind of Technology for Heating Processing of high-hardness stainless steel bolt, specifically comprises the following steps：
（1）Preheating：The pre-heat treatment is carried out to product using flame gun torch, preheating temperature is 180 DEG C；
（2）Annealing：Product after preheating is put into annealing furnace and made annealing treatment, the annealing temperature is 760 DEG C, is moved back
The fiery time is 2.5h, is taken out after then cooling to 350 DEG C with the furnace, is put in air and cools down 3h；
（3）Modifier treatment：First product is put into high temperature furnace, 30min is incubated after being heated to 860 DEG C, product oil cooling is further taken out, connects
And place into product in high temperature furnace, 75min is incubated after being heated to 580 DEG C, further take out product water cooling.
（4）Scale：Product is put into alkaline solution and carries out processing of scaling, the time of scaling is 15min.
Embodiment 3：
A kind of Technology for Heating Processing of high-hardness stainless steel bolt, specifically comprises the following steps：
（1）Preheating：The pre-heat treatment is carried out to product using flame gun torch, preheating temperature is 170 DEG C；
（2）Annealing：Product after preheating is put into annealing furnace and made annealing treatment, the annealing temperature is 750 DEG C, is moved back
The fiery time is 3h, is taken out after then cooling to 375 DEG C with the furnace, is put in air and cools down 2-3h；
（3）Modifier treatment：First product is put into high temperature furnace, 40min is incubated after being heated to 840 DEG C, product oil cooling is further taken out, connects
And place into product in high temperature furnace, 60min is incubated after being heated to 610 DEG C, further take out product water cooling.
（4）Scale：Product is put into alkaline solution and carries out processing of scaling, the time of scaling is 10min.
Wherein, the step（3）In high temperature furnace in have methanol protective atmosphere, for controlling the carbon content in product.
The step（3）In oil cooling use temperature as 40-60 DEG C of quenching oil；The step（4）In alkaline solution
It is 7% sodium hydrate aqueous solution for concentration.
Prior art is different from, a kind of Technology for Heating Processing of high-hardness stainless steel bolt of the present invention, passes through Optimal improvements
Technological process, specially successively using preheating, annealing, modifier treatment, scale by the way of, and using rational technological parameter carry out
Coordinate processing, the case hardness of stainless steel bolt after heat treatment finally greatly improved, use quality is high, service life length.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (4)
1. a kind of Technology for Heating Processing of high-hardness stainless steel bolt, it is characterised in that specifically comprise the following steps：
（1）Preheating：The pre-heat treatment is carried out to product using flame gun torch, preheating temperature is 160-180 DEG C；
（2）Annealing：Product after preheating is put into annealing furnace and made annealing treatment, the annealing temperature is 740-760
DEG C, annealing time 2.5-3.5h, taken out after then cooling to 350-400 DEG C with the furnace, be put in air and cool down 2-3h；
（3）Modifier treatment：First product is put into high temperature furnace, 30-50min is incubated after being heated to 820-860 DEG C, further takes out product
Oil cooling, then product is placed into high temperature furnace, 45-75min is incubated after being heated to 580-640 DEG C, further take out product water cooling；
（4）Scale：Product is put into alkaline solution and carries out processing of scaling, the time of scaling is 5-15min.
2. the Technology for Heating Processing of high-hardness stainless steel bolt according to claim 1, it is characterised in that the step（3）
In high temperature furnace in have methanol protective atmosphere.
3. the Technology for Heating Processing of high-hardness stainless steel bolt according to claim 1, it is characterised in that the step（3）
In oil cooling use temperature as 40-60 DEG C of quenching oil.
4. the Technology for Heating Processing of high-hardness stainless steel bolt according to claim 1, it is characterised in that the step（4）
In alkaline solution be that concentration is 7% sodium hydrate aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001626.4A CN107723440A (en) | 2017-10-24 | 2017-10-24 | A kind of Technology for Heating Processing of high-hardness stainless steel bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001626.4A CN107723440A (en) | 2017-10-24 | 2017-10-24 | A kind of Technology for Heating Processing of high-hardness stainless steel bolt |
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| Publication Number | Publication Date |
|---|---|
| CN107723440A true CN107723440A (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711001626.4A Pending CN107723440A (en) | 2017-10-24 | 2017-10-24 | A kind of Technology for Heating Processing of high-hardness stainless steel bolt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207698A (en) * | 2018-08-27 | 2019-01-15 | 谢潇湘 | A kind of production technology for high-strength stainless steel fastening modifier treatment |
| CN110343828A (en) * | 2019-08-01 | 2019-10-18 | 响水德丰金属材料有限公司 | A kind of stainless steel solution heat heat treatment method |
| CN110938733A (en) * | 2019-12-31 | 2020-03-31 | 东台市展新不锈钢紧固件制造有限公司 | Production process for quenching and tempering high-strength stainless steel fastener |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943210A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength bolt and processing method thereof |
| CN106119472A (en) * | 2016-08-25 | 2016-11-16 | 宁波金鼎紧固件有限公司 | Bolt Technology for Heating Processing |
-
2017
- 2017-10-24 CN CN201711001626.4A patent/CN107723440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943210A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength bolt and processing method thereof |
| CN106119472A (en) * | 2016-08-25 | 2016-11-16 | 宁波金鼎紧固件有限公司 | Bolt Technology for Heating Processing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207698A (en) * | 2018-08-27 | 2019-01-15 | 谢潇湘 | A kind of production technology for high-strength stainless steel fastening modifier treatment |
| CN110343828A (en) * | 2019-08-01 | 2019-10-18 | 响水德丰金属材料有限公司 | A kind of stainless steel solution heat heat treatment method |
| CN110938733A (en) * | 2019-12-31 | 2020-03-31 | 东台市展新不锈钢紧固件制造有限公司 | Production process for quenching and tempering high-strength stainless steel fastener |
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Application publication date: 20180223 |
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