CN109702205A - A kind of austenitic stainless steel metal powder injection molding components heat treatment process - Google Patents
A kind of austenitic stainless steel metal powder injection molding components heat treatment process Download PDFInfo
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Abstract
The invention discloses a kind of austenitic stainless steel metal powder injection molding components heat treatment process, it is related to austenitic stainless steel technical field of heat treatment, the present invention is the following steps are included: carry out heat temperature raising for sintered stainless steel forming parts, it is warming up to 1050 DEG C -1200 DEG C, then the stainless steel forming parts after will heat up carry out solution treatment, it is dissolved under 80kpa nitrogen partial pressure, heat treatment temperature is 1050 DEG C -1200 DEG C, processing total time is 2-8h, wherein soaking time is 2h, then it is quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cool to 180 DEG C -380 DEG C, then tempering is carried out, heat treatment temperature is 180 DEG C -380 DEG C, processing total time is 6-24h, wherein soaking time is 3 H is handled finally by nitrogen rapid cooling, and cooling rate is 6000 DEG C/h, and the present invention has the advantages that the components theoretical density after rational technology, heat treatment keeps non-magnetic up to 98%, components obtained.
Description
Technical field
The present invention relates to austenitic stainless steel technical field of heat treatment, more particularly to a kind of austenitic stainless steel gold
Belong to powder injection-molded components heat treatment process.
Background technique
Nickel element is because have excellent corrosion-resistant, antirust, oxidation resistant ability, in high temperature and severe working environment
It has been widely used, with more in-depth studies, also just gradually reproduction is come out for its some negative effects.Such as
The allergy due to caused by contact metallic nickel has more and more been paid close attention in industrialized country, if having repetition or company with nickel element
The contact of continuous property, the women and 2-5% male of about 10-15% have the hardship for living through nickel allergy, the nickel element component contained due to
Corrosion dissolution is other than generating allergic reaction to human body, and there is also teratogenesis, carcinogenic harmfulness, the researchs of medical free nickel stainless steel
The harm that nickel will be avoided with exploitation, greatly improves the long-time service safety of biological implantation material.Nickel is the coating (electricity from nickel
Plating, vacuum evaporation, sputter) transfer, coin that common product has frame nickel alloy high, bracelet or come from Ovshinsky
Body chromium nickel stainless steel.The great concern that prevented the topic of nickel allergy together, therefore the nickel instruction of such limitation nickel content, hand
Art knife (limit 0.05%) pierces through position as body, to limit the nickel burst size of product.In the medical Austria being currently widely used
In family name's body stainless steel, nickel is a kind of important alloy element, its main function is that stainless steel is made to form stable austenite
Structure, so as to improve performances such as the corrosion resistance of stainless steel, plasticity, weldability and toughness, stable austenitic structure is also
Stainless steel can be made to have nonmagnetic, the nickel content in medical 316L and 317L austenitic stainless steel is required in 10%-14%, doctor
With the nickel content in 304L stainless steel also in 8%-10%.But nickel is a kind of potential sensitizing factor again, a large amount of clinic table
Now it has been proved that nickel and its compound can generate harm to the mankind, one of the most common damage is nickel contact dermatitis, disease incidence
Higher, eczema can occur for anaphylaxis powerhouse.Therefore, BASF business development goes out Catamold product Panacea
(X150rMnMoN17-11-3) metal injection molded dedicated feeding, it is a kind of prealloy ferrite comminuted steel shot of low nickel high nitrogen
End obtains in sintering or solution annealing technique after sintering with nitrogen treatment, so that it is guaranteed that it still maintains stainless
Steel its excellent corrosion resistance, corrosion resistance and wearability, even if the content of nickel element has been greatly reduced.Should more it draw
Play people to be vigilant: nickel ion is enriched in vivo to be also possible to induce poisonous effect, and cytoclasis and inflammatory response occurs,
There are teratogenesis, carcinogenic harmfulness to organism, and after nickeliferous medical metal material implantation human body, due to inevitable burn into
Abrasion, the metal ions such as nickel ion can be discharged into adjacent tissue, easily the tissue reactions such as induction allergy, infection, especially to nickel mistake
Quick patient is particularly acute.Famous medical journal " lancet " (The Lancet) once it is reported that, stainless steel is cardiovascular
In bracket allergic reaction caused by the Metal ion releases such as nickel, chromium and molybdenum may be angiocarpy bracket restenosis remote cause it
One.
With traditional cold wall vacuum batch furnace, complete austenite microstructure can be sintered out and sintered density is theoretical value
95% or more metal injection molded components, under given sintering temperature, because of the diffusion of face-centered cubic phase (austenite)
Coefficient about two exponential magnitudes lower than high body-centered cubic phase (ferrite), the further densification of the components of full austenite phase
It is relatively more difficult, longer sintering period and higher sintering temperature are needed, in order to obtain higher sintered density, is but needed
To lose the nitrogen content in sintered body as cost, in order to improve its sintered density, needs for holding temperature to be increased to 1270 DEG C, increase
The probability melted in sintering engineering is added, since in the cooling procedure of vacuum batch furnace sintering, cooling rate is not fast enough, has caused big
The precipitation for measuring nitride, reduces the mechanical performance of workpiece and the resistance to corrosion of components, especially nitride is segregated in crystalline substance
Around boundary, so that elongation percentage is substantially reduced, cooling in normal vacuum furnace after sintering, once there is chromium nitride (Cr2N), this is heavy
The antirust ability of starch, chromium just disappears, the chromium of stainless steel because and nitrogen combine and lose antirust ability.Low nickel high-nitrogen austenitic stainless steel
Metal powder injection components after the sintering of vacuum batch furnace, sintered density only has 95%, and nitrogen content is relatively low only
0.55%-0.65%, and be unevenly distributed, it is much precipitated with the particle of nitride, and be gathered near crystal boundary, it is in addition cold
But speed is slow and band is magnetic, and is not able to satisfy the non-magnetic application requirement of client.
Therefore above-mentioned technical problem how is solved, there is very much realistic meaning to those skilled in the art.
Summary of the invention
It is an object of the invention to: in order to solve the existing austenitic stainless steel metal powder being sintered by vacuum batch furnace
Sintered density and the nitrogen content for being injection moulded components are low all relatively low, and with certain magnetism, are unsatisfactory for the technology of requirement
Problem, the present invention provide a kind of austenitic stainless steel metal powder injection molding components heat treatment process.
The present invention specifically uses following technical scheme to achieve the goals above:
A kind of austenitic stainless steel metal powder injection molding components heat treatment process, comprising the following steps:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1050 DEG C -1200 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, at heat
Managing temperature is 1050 DEG C -1200 DEG C, and processing total time is 2-8h, and wherein soaking time is 2h；
S3: and then being quenched, and is quickly cooled down by nitrogen, and cooling rate is 6000 DEG C/h, cool to 180 DEG C-
380℃；
S4: and then tempering is carried out, heat treatment temperature is 180 DEG C -380 DEG C, and processing total time is 6-24h, wherein protecting
The warm time is 3h, is handled finally by nitrogen rapid cooling, and cooling rate is 6000 DEG C/h.
Further, comprising the following steps:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1170 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, at heat
Managing temperature is 1170 DEG C, and processing total time is 4-6h, and wherein soaking time is 2h；
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 280 DEG C；
S4: and then tempering is carried out, heat treatment temperature is 280 DEG C, and processing total time is 8-12h, wherein soaking time
It for 3h, is handled finally by nitrogen rapid cooling, cooling rate is 6000 DEG C/h.
Further, in step sl, heat temperature raising is divided into three phases, respectively the first heating stage, the second heating
Stage and third temperature rise period, the first heating step-up temperature rate are 200-300 DEG C/h, are warming up to 800 ± 10 DEG C, soaking time
For 2h, the second temperature rise period heating rate is 80-100 DEG C/h, is warming up to 1050 ± 10 DEG C, soaking time 2h, third heating
Step-up temperature rate is 40-60 DEG C/h, is warming up to solution treatment required temperature.
Beneficial effects of the present invention are as follows:
1, the metal injection molded components after high temperature nitrogen solution treatment, the dedicated feeding of comparison BASF business are burnt
Mechanical performance is tied, its nitrogen content can achieve a high position of 0.80-0.90%, and the theory that the density of sintering can achieve 98% is close
Degree, hardness is up to Rockwell hardness HRC35 or more, and yield strength improves 5%, and tensile strength improves 8-10%, and components are kept
Nonmagnetic, the content of chromium, manganese and molybdenum element is also to maintain in sintered part(s), has excellent corrosion resistance.Using this zero
The polishing effect of part material can fully meet client after subsequent progress blasting treatment also superior to austenitic stainless steel SUS316
Application requirement.
Specific embodiment
In order to which those skilled in the art better understand the present invention, below following embodiment to the present invention make further it is detailed
Thin description.
Embodiment 1
The present embodiment provides a kind of austenitic stainless steel metal powder injection molding components heat treatment process, including it is following
Step:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1050 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, at heat
Managing temperature is 1050 DEG C, and processing total time is 2-8h, and wherein soaking time is 2h；
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 180 DEG C；
S4: and then tempering is carried out, heat treatment temperature is 180 DEG C, and processing total time is 6-24h, wherein soaking time
It for 3h, is handled finally by nitrogen rapid cooling, cooling rate is 6000 DEG C/h.
Further, in step sl, heat temperature raising is divided into three phases, respectively the first heating stage, the second heating
Stage and third temperature rise period, the first heating step-up temperature rate are 200-300 DEG C/h, are warming up to 800 ± 10 DEG C, soaking time
For 2h, the second temperature rise period heating rate is 80-100 DEG C/h, is warming up to 1050 ± 10 DEG C, soaking time 2h, third heating
Step-up temperature rate is 40-60 DEG C/h, is warming up to solution treatment required temperature.
Embodiment 2
The present embodiment provides a kind of austenitic stainless steel metal powder injection molding components heat treatment process, including it is following
Step:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1170 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, at heat
Managing temperature is 1170 DEG C, and processing total time is 4-6h, and wherein soaking time is 2h；
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 280 DEG C；
S4: and then tempering is carried out, heat treatment temperature is 280 DEG C, and processing total time is 8-12h, wherein soaking time
It for 3h, is handled finally by nitrogen rapid cooling, cooling rate is 6000 DEG C/h.
Further, in step sl, heat temperature raising is divided into three phases, respectively the first heating stage, the second heating
Stage and third temperature rise period, the first heating step-up temperature rate are 200-300 DEG C/h, are warming up to 800 ± 10 DEG C, soaking time
For 2h, the second temperature rise period heating rate is 80-100 DEG C/h, is warming up to 1050 ± 10 DEG C, soaking time 2h, third heating
Step-up temperature rate is 40-60 DEG C/h, is warming up to solution treatment required temperature.
Embodiment 3
The present embodiment provides a kind of austenitic stainless steel metal powder injection molding components heat treatment process, including it is following
Step:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1200 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, at heat
Managing temperature is 1200 DEG C, and processing total time is 2-8h, and wherein soaking time is 2h；
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 380 DEG C；
S4: and then tempering is carried out, heat treatment temperature is 380 DEG C, and processing total time is 6-24h, wherein soaking time
It for 3h, is handled finally by nitrogen rapid cooling, cooling rate is 6000 DEG C/h.
Further, in step sl, heat temperature raising is divided into three phases, respectively the first heating stage, the second heating
Stage and third temperature rise period, the first heating step-up temperature rate are 200-300 DEG C/h, are warming up to 800 ± 10 DEG C, soaking time
For 2h, the second temperature rise period heating rate is 80-100 DEG C/h, is warming up to 1050 ± 10 DEG C, soaking time 2h, third heating
Step-up temperature rate is 40-60 DEG C/h, is warming up to solution treatment required temperature.
In above-described embodiment, metal injection molded components after high temperature nitrogen solution treatment compare BASF quotient
The dedicated feeding sintering machinery performance of industry, its nitrogen content can achieve a high position of 0.80-0.90%, and the density of sintering can achieve
98% theoretical density, hardness is up to Rockwell hardness HRC35 or more, and yield strength improves 5%, and tensile strength improves 8-
10%, components keep nonmagnetic, and the content of chromium, manganese and molybdenum element is also to maintain in sintered part(s), with excellent anticorrosive
Performance.Using the polishing effect of this components material also superior to austenitic stainless steel SUS316, after subsequent progress blasting treatment, energy
Enough fully meet the application requirement of client.
Above three embodiments and the dedicated feeding sintering machinery performance comparison table such as the following table 1 of BASF business:
1 mechanical performance contrast table of table
The above, only presently preferred embodiments of the present invention, are not intended to limit the invention, patent protection model of the invention
It encloses and is subject to claims, it is all with equivalent variations made by specification of the invention, it similarly should be included in the present invention
Protection scope in.
Claims (3)
1. a kind of austenitic stainless steel metal powder injection molding components heat treatment process, which is characterized in that including following step
It is rapid:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1050 DEG C -1200 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, heat treatment temperature
Degree is 1050 DEG C -1200 DEG C, and processing total time is 2-8h, and wherein soaking time is 2h:
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 180 DEG C -380
℃；
S4: and then tempering is carried out, heat treatment temperature is 180 DEG C -380 DEG C, and processing total time is 6-24h, wherein when keeping the temperature
Between be 3h, finally by nitrogen rapid cooling handle, cooling rate be 6000 DEG C/h.
2. a kind of austenitic stainless steel metal powder injection molding components heat treatment process according to claim 1,
It is characterized in that, comprising the following steps:
S1: sintered stainless steel forming parts are subjected to heat temperature raising, are warming up to 1170 DEG C；
S2: the stainless steel forming parts after will heat up carry out solution treatment, are dissolved under 80kpa nitrogen partial pressure, heat treatment temperature
Degree is 1170 DEG C, and processing total time is 4-6h, and wherein soaking time is 2h；
S3: and then be quenched, it is quickly cooled down by nitrogen, cooling rate is 6000 DEG C/h, cools to 280 DEG C；
S4: and then tempering is carried out, heat treatment temperature is 280 DEG C, and processing total time is 8-12h, and wherein soaking time is 3h,
It is handled finally by nitrogen rapid cooling, cooling rate is 6000 DEG C/h.
3. a kind of austenitic stainless steel metal powder injection molding components heat treatment process according to claim 1,
It is characterized in that, in step sl, heat temperature raising is divided into three phases, respectively the first heating stage, the second temperature rise period and
Three temperature rise periods, the first heating step-up temperature rate are 200-300 DEG C/h, are warming up to 800 ± 10 DEG C, soaking time 2h, the
Two temperature rise period heating rates are 80-100 DEG C/h, are warming up to 1050 ± 10 DEG C, soaking time 2h, the heating of third temperature rise period
Rate is 40-60 DEG C/h, is warming up to solution treatment required temperature.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241380A (en) * | 2019-06-02 | 2019-09-17 | 邢晓英 | A kind for the treatment of process of medical free nickel stainless steel |
| CN110257759A (en) * | 2019-06-02 | 2019-09-20 | 邢晓英 | A kind of stainless steel processing method that biocompatibility is excellent |
| CN111451507A (en) * | 2020-05-27 | 2020-07-28 | 江苏省海洋资源开发研究院(连云港) | Near-net forming method of high-nitrogen nickel-free austenitic stainless steel |
| CN112846188A (en) * | 2021-01-04 | 2021-05-28 | 深圳市鑫迪科技有限公司 | Sintering process capable of reducing magnetic permeability of 316L stainless steel material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101198714A (en) * | 2005-06-15 | 2008-06-11 | 皇家飞利浦电子股份有限公司 | Method for manufacturing a stainless steel product |
| CN102676766A (en) * | 2012-06-05 | 2012-09-19 | 米云霞 | Thermal treatment method for improving low-temperature impact toughness of austenite-ferrite stainless steel |
| CN103436816A (en) * | 2013-09-11 | 2013-12-11 | 武汉重工铸锻有限责任公司 | Manufacturing method of 1Cr18Ni9Ti stainless steel shaft forging |
| CN103706793A (en) * | 2013-12-18 | 2014-04-09 | 潍坊学院 | Preparation method of low-nickel high-nitrogen austenitic stainless steel product |
| KR101698685B1 (en) * | 2015-09-10 | 2017-01-20 | 조영봉 | a super precise casting and forging method for a watch case having a fine hole with minimized pin hole |
| CN108237155A (en) * | 2016-12-26 | 2018-07-03 | 核工业西南物理研究院 | A kind of complex-curved manufacturing method of large size tokamak vacuum room housing |
| CN109014211A (en) * | 2018-08-09 | 2018-12-18 | 上海富驰高科技有限公司 | A kind of inexpensive MIM manufacturing process of the high nitrogen without magnetic high strength stainless steel part |
| CN109055706A (en) * | 2018-09-29 | 2018-12-21 | 中国航发哈尔滨轴承有限公司 | A kind of Cronidur30 high nitrogen stainless steel bearing parts heat treatment method |
-
2019
- 2019-03-08 CN CN201910175183.3A patent/CN109702205A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101198714A (en) * | 2005-06-15 | 2008-06-11 | 皇家飞利浦电子股份有限公司 | Method for manufacturing a stainless steel product |
| CN102676766A (en) * | 2012-06-05 | 2012-09-19 | 米云霞 | Thermal treatment method for improving low-temperature impact toughness of austenite-ferrite stainless steel |
| CN103436816A (en) * | 2013-09-11 | 2013-12-11 | 武汉重工铸锻有限责任公司 | Manufacturing method of 1Cr18Ni9Ti stainless steel shaft forging |
| CN103706793A (en) * | 2013-12-18 | 2014-04-09 | 潍坊学院 | Preparation method of low-nickel high-nitrogen austenitic stainless steel product |
| KR101698685B1 (en) * | 2015-09-10 | 2017-01-20 | 조영봉 | a super precise casting and forging method for a watch case having a fine hole with minimized pin hole |
| CN108237155A (en) * | 2016-12-26 | 2018-07-03 | 核工业西南物理研究院 | A kind of complex-curved manufacturing method of large size tokamak vacuum room housing |
| CN109014211A (en) * | 2018-08-09 | 2018-12-18 | 上海富驰高科技有限公司 | A kind of inexpensive MIM manufacturing process of the high nitrogen without magnetic high strength stainless steel part |
| CN109055706A (en) * | 2018-09-29 | 2018-12-21 | 中国航发哈尔滨轴承有限公司 | A kind of Cronidur30 high nitrogen stainless steel bearing parts heat treatment method |
Non-Patent Citations (2)
| Title |
|---|
| 张清: "《金属磨损和金属耐磨材料手册》", 31 January 1991 * |
| 黄运华: "Mnl3铸件水韧处理质量控制", 《甘肃冶金》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241380A (en) * | 2019-06-02 | 2019-09-17 | 邢晓英 | A kind for the treatment of process of medical free nickel stainless steel |
| CN110257759A (en) * | 2019-06-02 | 2019-09-20 | 邢晓英 | A kind of stainless steel processing method that biocompatibility is excellent |
| CN110257759B (en) * | 2019-06-02 | 2021-07-09 | 何世文 | Method for processing stainless steel with excellent biocompatibility |
| CN111451507A (en) * | 2020-05-27 | 2020-07-28 | 江苏省海洋资源开发研究院(连云港) | Near-net forming method of high-nitrogen nickel-free austenitic stainless steel |
| CN112846188A (en) * | 2021-01-04 | 2021-05-28 | 深圳市鑫迪科技有限公司 | Sintering process capable of reducing magnetic permeability of 316L stainless steel material |
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Application publication date: 20190503 |