CN107723423A - A kind of heat treatment quenching process of acid-resistant stainless steel precision component - Google Patents
A kind of heat treatment quenching process of acid-resistant stainless steel precision component Download PDFInfo
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- CN107723423A CN107723423A CN201711218845.8A CN201711218845A CN107723423A CN 107723423 A CN107723423 A CN 107723423A CN 201711218845 A CN201711218845 A CN 201711218845A CN 107723423 A CN107723423 A CN 107723423A
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- workpiece
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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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D2211/00—Microstructure comprising significant phases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses a kind of heat treatment quenching process of acid-resistant stainless steel precision component, completed by following steps, including:(1) put the workpiece in glowing furnace and be preheated to 150 DEG C；(2) a point two level is heated to 1035 DEG C of hardening heat and is incubated in glowing furnace；(3) workpiece is come out of the stove into air-blast quenching to 65 DEG C；(4) workpiece is entered to 530 DEG C of insulation tempering of tempering furnace, air cooling of coming out of the stove twice.Described putting the workpiece in glowing furnace is preheated to 150 DEG C, with the firing rate less than 115 DEG C/h to 150 DEG C.Continue to be heated to 820 DEG C after workpiece preheating and be incubated 40min, be heated to 1035 DEG C of hardening heat and be incubated 30min.The present invention can finely control the internal crystalline phase tissue of workpiece, be allowed to crystal grain refinement, uniformly, stably, reliably, and retained austenite is less, dimensionally stable makes good part wearability, long lifespan, reliability are high, dimensionally stable, reach the requirement of precision component.
Description
【Technical field】
The present invention relates to special stainless steel material heat treatment field, and in particular to a kind of AISI 440C acid-resistant stainless steels essence
The heat treatment quenching process of close part.
【Background technology】
In recent years, import special steel material is constantly increasing, particularly the high purity steel of the country such as the U.S., Germany, has pure
The fine qualities such as clear height, crystal grain refinement, even tissue；But heat treatment is horizontal incompatible therewith, it is difficult to plays its performance, causes
Huge waste, some supply producers have to set special heat treatment service Factory at home, cause cost greatly to rise.
AISI 440C are U.S.'s trade mark, are a kind of high purity, the acid-resistant stainless steel of crystal grain refinement even tissue, mainly
Alloy composition is 1.0%C 18%Cr 1.0%Si 0.65%Mo 1.0%Mn, can realize hardening by quenching, hardness is high, resistance to
The good, dimensionally stable of mill property, long lifespan, reliability are high；Conventional hardness HRC52-HRC54；But because of its poor thermal conductivity, alloy into
Part also has a great influence to Technology for Heating Processing, causes Technology for Heating Processing complicated, is such as heat-treated improper not only difficult its premium properties of performance,
Quality is also difficult to control, and is easily scrapped in batches, it is also difficult to is reliably ensured its quenching degree and is accurately controlled material internal crystalline phase
The uniformity of tissue, its retained austenite are caused part to produce creep in the course of the work by thermal instability.
【The content of the invention】
In view of this, it is overcome the deficiencies in the prior art, the present invention is provided at a kind of heat of acid-resistant stainless steel precision component
Quenching technical is managed, can reliably ensure its quenching degree and accurately control material internal crystal grain refinement, even tissue stabilization, it is less
Retained austenite, make that good part wearability, long lifespan, reliability be high, dimensionally stable, reach the requirement of precision component.
To achieve the above object, technical scheme is as follows：
A kind of heat treatment quenching process of acid-resistant stainless steel precision component, is completed by following steps, including
(1) put the workpiece in glowing furnace and be preheated to 150 DEG C；(2) a point two level is heated to hardening heat in glowing furnace
1035 DEG C and it is incubated；(3) workpiece is come out of the stove into air-blast quenching to 65 DEG C；(4) workpiece is entered to 530 DEG C of insulation tempering of tempering furnace twice,
Come out of the stove air cooling.
Further, described put the workpiece in glowing furnace is preheated to 150 DEG C, with the firing rate less than 115 DEG C/h
To 150 DEG C.
Continue to be heated to 820 DEG C after workpiece preheating and be incubated 40min, be heated to 1035 DEG C of hardening heat and be incubated
30min。
Workpiece is come out of the stove and placed on support to 65 DEG C by described air-blast quenching that workpiece is come out of the stove, and air blower is opened, by workpiece
It is air-cooled to 65 DEG C.
It is described that workpiece enters to tempering furnace insulation tempering twice, air cooling of coming out of the stove, when workpiece it is air-cooled to 65 DEG C when enter back immediately
Stove is heated to 530 DEG C and is incubated 120min, natural air cooling of coming out of the stove；Enter tempering furnace for the second time immediately when workpiece is air-cooled to 65 DEG C
It is heated to 530 DEG C and is incubated 120min, natural air cooling of coming out of the stove is to room temperature.
The invention has the advantages that the internal crystalline phase tissue of workpiece can be finely controlled, be allowed to crystal grain refinement, uniformly, it is steady
Fixed, reliable, retained austenite is less, dimensionally stable.The present invention is simple to operate practical, has higher engineer applied valency
Value, it, which puts goods on the market, will produce significantly Social benefit and economic benefit.
【Brief description of the drawings】
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is technological process and the technological parameter schematic diagram of the present invention.
Wherein, abscissa represents the time, and ordinate represents temperature；It is specifically into stove heat to 150 DEG C -820 DEG C insulations
40min -1035 DEG C insulation 30min-air-blast quenching of coming out of the stove is to 65 DEG C-enter stove heat to 530 DEG C insulation 120min be tempered-go out
Stove be air-cooled to 65 DEG C-enter stove heat and be tempered-come out of the stove and be air-cooled to room temperature to 530 DEG C of insulation 120min.
【Embodiment】
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
A kind of heat treatment quenching process of acid-resistant stainless steel precision component, is completed by following steps, including (1) by workpiece
It is put into glowing furnace and is preheated to 150 DEG C；(2) a point two level is heated to 1035 DEG C of hardening heat and is incubated in glowing furnace；(3) by work
Part comes out of the stove air-blast quenching to 65 DEG C；(4) workpiece is entered to 530 DEG C of insulation tempering of tempering furnace, air cooling of coming out of the stove twice.
Reference picture 1, the thickness of embodiment one about 20mm 440C acid-resistant stainless steel precision components, hardness requirement HRC52.
(1) a collection of thickness about 20mm workpiece is put into glowing furnace and preheated, with the firing rate less than 115 DEG C/h
To 150 DEG C；
(2) workpiece is heated to 820 DEG C in glowing furnace and is incubated 40min, is further continued for being heated to 1035 DEG C of hardening heat simultaneously
It is incubated 30min；
(3) workpiece is come out of the stove and placed on support, air blower is opened, by workpiece air-blast quenching；
(4) when workpiece it is air-cooled to 65 DEG C when enter tempering furnace immediately and be heated to 530 DEG C to be tempered and be incubated 120min, nature of coming out of the stove
Air cooling；
(5) enter tempering furnace for the second time immediately when workpiece is air-cooled to 65 DEG C and be heated to 530 DEG C to be tempered and be incubated 120min, go out
Stove natural air cooling is to room temperature；
(6) workpiece hardness is surveyed sample with hardometer, and splits workpiece polishing section, with crystalline phase group inside microexamination
Knit.
The present invention can finely control the internal crystalline phase tissue of workpiece, be allowed to crystal grain refinement, uniformly, stably, reliably, remaining difficult to understand
Family name's body is less, dimensionally stable.The present invention is simple to operate practical, has higher engineering application value, it puts goods on the market must
Significantly Social benefit and economic benefit will be produced.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (3)
1. a kind of heat treatment quenching process of acid-resistant stainless steel precision component, it is characterised in that completed, wrapped by following steps
Include:(1) put the workpiece in glowing furnace and be preheated to 150 DEG C；(2) a point two level is heated to 1035 DEG C of hardening heat simultaneously in glowing furnace
Insulation；(3) workpiece is come out of the stove into air-blast quenching to 65 DEG C；(4) workpiece is entered to 530 DEG C of insulation tempering of tempering furnace, air cooling of coming out of the stove twice.
A kind of 2. heat treatment quenching process of acid-resistant stainless steel precision component according to claim 1, it is characterised in that
Step (1) continues to be heated to 820 DEG C and is incubated 40min, be heated to hardening heat into step (2) after workpiece preheating
1035 DEG C and it is incubated 30min.
A kind of 3. heat treatment quenching process of acid-resistant stainless steel precision component according to claim 1, it is characterised in that
Step (3) into step (4), when workpiece it is air-cooled to 65 DEG C when enter tempering furnace immediately and be heated to 530 DEG C and be incubated 120min, come out of the stove
Natural air cooling；Enter tempering furnace for the second time immediately when workpiece is air-cooled to 65 DEG C to be heated to 530 DEG C and be incubated 120min, nature of coming out of the stove
It is air-cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218845.8A CN107723423A (en) | 2017-11-28 | 2017-11-28 | A kind of heat treatment quenching process of acid-resistant stainless steel precision component |
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| CN201711218845.8A CN107723423A (en) | 2017-11-28 | 2017-11-28 | A kind of heat treatment quenching process of acid-resistant stainless steel precision component |
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| CN107723423A true CN107723423A (en) | 2018-02-23 |
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| CN201711218845.8A Pending CN107723423A (en) | 2017-11-28 | 2017-11-28 | A kind of heat treatment quenching process of acid-resistant stainless steel precision component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588369A (en) * | 2018-04-22 | 2018-09-28 | 黄石高校智源技术咨询服务有限公司 | A kind of heat-resisting accurate heat treatment quenching process of acid-resistant stainless steel precision component of high carbon and chromium |
Citations (7)
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|---|---|---|---|---|
| CN102776335A (en) * | 2012-07-16 | 2012-11-14 | 张家港海锅重型锻件有限公司 | Process for manufacturing 17-4PH Martensite precipitation-hardening stainless steel forgings |
| CN103589839A (en) * | 2013-10-21 | 2014-02-19 | 航天精工股份有限公司 | Heat treatment technique of high-carbon high-chromium stainless steel |
| CN103740913A (en) * | 2014-01-10 | 2014-04-23 | 隆英（上海）企业有限公司 | High-temperature forged martensitic stainless steel heat treatment method |
| JP2015137381A (en) * | 2014-01-21 | 2015-07-30 | 山陽特殊製鋼株式会社 | Stainless steel having excellent machinability, hardness, abrasion resistance and corrosion resistance |
| KR20160047104A (en) * | 2014-10-22 | 2016-05-02 | 주식회사 메타즈 | Heat treatment process of boron alloy steel for track link of construction vehicles |
| CN105886706A (en) * | 2014-08-26 | 2016-08-24 | 宁波市鄞州兴达旅游用品厂 | Heat treatment technology for stainless steel workpieces |
| CN106702096A (en) * | 2017-01-20 | 2017-05-24 | 杜俊峰 | Composite treatment technology for AISI440C stainless steel scalpel |
-
2017
- 2017-11-28 CN CN201711218845.8A patent/CN107723423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776335A (en) * | 2012-07-16 | 2012-11-14 | 张家港海锅重型锻件有限公司 | Process for manufacturing 17-4PH Martensite precipitation-hardening stainless steel forgings |
| CN103589839A (en) * | 2013-10-21 | 2014-02-19 | 航天精工股份有限公司 | Heat treatment technique of high-carbon high-chromium stainless steel |
| CN103740913A (en) * | 2014-01-10 | 2014-04-23 | 隆英（上海）企业有限公司 | High-temperature forged martensitic stainless steel heat treatment method |
| JP2015137381A (en) * | 2014-01-21 | 2015-07-30 | 山陽特殊製鋼株式会社 | Stainless steel having excellent machinability, hardness, abrasion resistance and corrosion resistance |
| CN105886706A (en) * | 2014-08-26 | 2016-08-24 | 宁波市鄞州兴达旅游用品厂 | Heat treatment technology for stainless steel workpieces |
| KR20160047104A (en) * | 2014-10-22 | 2016-05-02 | 주식회사 메타즈 | Heat treatment process of boron alloy steel for track link of construction vehicles |
| CN106702096A (en) * | 2017-01-20 | 2017-05-24 | 杜俊峰 | Composite treatment technology for AISI440C stainless steel scalpel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588369A (en) * | 2018-04-22 | 2018-09-28 | 黄石高校智源技术咨询服务有限公司 | A kind of heat-resisting accurate heat treatment quenching process of acid-resistant stainless steel precision component of high carbon and chromium |
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