CN108286903A - The method without magnetic SUS630 is processed using vacuum sintering furnace - Google Patents
The method without magnetic SUS630 is processed using vacuum sintering furnace Download PDFInfo
- Publication number
- CN108286903A CN108286903A CN201810052204.8A CN201810052204A CN108286903A CN 108286903 A CN108286903 A CN 108286903A CN 201810052204 A CN201810052204 A CN 201810052204A CN 108286903 A CN108286903 A CN 108286903A
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- Prior art keywords
- sintering
- temperature
- vacuum
- heat
- stove
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/18—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention belongs to process technical field of forging, the method without magnetic SUS630 is processed more particularly, to using vacuum sintering furnace, 210 300min of setting time carries out negative pressure hot defatting after being heated to 600 DEG C from room temperature first, then stove vacuum-sintering temperature is increased to 950 1100 DEG C, 30 60min of vacuum-sintering, subsequently change MIM sintering highest temperature section partial pressure sintering, the 1340 DEG C of sintering of the first stage highest temperature, furnace pressure divides 20Kpa, heat preservation 1 hour, the second stage highest temperature 1340 is sintered, and divides 80Kpa, keeps the temperature 2 hours；It is warming up to 1,100 1250 DEG C again, heat preservation a period of time, the mode being then quickly cooled down is heat-treated.It utilizes MIM vacuum drying oven sintering process sections；17 4PH materials are accomplished nonmagnetic；Hardness without magnetic 17 4, yield strength, the performances such as tensile strength are all better than 316 materials.
Description
Technical field
The invention belongs to process technical field of forging, the side without magnetic SUS630 is processed more particularly, to using vacuum sintering furnace
Method.
Background technology
17-4PH is after the vacuum drying oven sintering of MIM, and hardness stabilization is magnetic in HV290-310, by using this skill
Art changes sintering process, hardness can be allowed to reach HV190-240, product is nonmagnetic.Since this technology is for vacuum drying oven vacuum
Degree require it is high, so the sintering furnace of different vacuum degrees, with after this process product magnetism size and stability have obviously
Difference.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple in structure, reasonable design makes
With easily the method without magnetic SUS630 is processed using vacuum sintering furnace, it utilizes MIM vacuum drying oven sintering process sections；By 17-4PH
Material is accomplished nonmagnetic；Hardness without magnetic 17-4, yield strength, the performances such as tensile strength are all better than 316 materials；And without magnetic 17-4
Salt fog can keep 48 hours.
To achieve the above object, the technical solution adopted by the present invention is：Its processing method：First according to product structure,
Product thickness, shape of product, technique initialization time 210-300min are heated to 600 DEG C of laggard trip temperatures from room temperature and keep, and with
50-55L/min is filled with nitrogen and carries out negative pressure hot defatting, ensures that interiors of products bonding agent whole degreasing is completed, then according to stove
Actual temperature, stove vacuum-sintering temperature is increased to 950-1100 DEG C, vacuum-sintering 30-60min subsequently changes
MIM is sintered the partial pressure sintering of highest temperature section, and 1340 DEG C of the first stage highest temperature is sintered, furnace pressure divides 20Kpa, and heat preservation 1 is small
When, the second stage highest temperature 1340 is sintered, and divides 80Kpa, keeps the temperature 2 hours, and partial pressure stage whole process is with 20-30L/min applying argon gas；
It is warming up to 1100-1250 DEG C with certain heating rate again, heat preservation a period of time, the mode being then quickly cooled down is heat-treated.
The mode heat-treating methods being quickly cooled down are：Pressure cooling is carried out from 1100 DEG C of opening fans, entirely
Cooling procedure applying argon gas (Ar), furnace pressure 50-86Kpa are cooled to 60-70 DEG C or less and come out of the stove and be heat-treated；Work as sintering
Section stove is come out of the stove after cooling to 60 DEG C；It reuses vacuum heat stove to be heat-treated, heat treatment process：A, with certain liter
Warm rate is raised to 1100-1250 DEG C, 2-3H is kept the temperature, using nitrogen as protective gas；B, with the cooling of 150-180 DEG C/min speed
Rate, fast cooling is to 60 DEG C.
With the above structure, the present invention has the beneficial effect that：It utilizes MIM vacuum drying oven sintering process sections；By 17-4PH materials
Material is accomplished nonmagnetic；Hardness without magnetic 17-4, yield strength, the performances such as tensile strength are all better than 316 materials；And without magnetic 17-4's
Salt fog can be kept 48 hours.
Specific implementation mode：
Present embodiment adopts the following technical scheme that：Its processing method：It is thick according to product structure, product first
Degree, shape of product, technique initialization time 210-300min are heated to 600 DEG C of laggard trip temperatures from room temperature and keep, and with 50-55L/
Min is filled with nitrogen and carries out negative pressure hot defatting, ensures that interiors of products bonding agent whole degreasing is completed, then according to the practical temperature of stove
Degree, 950-1100 DEG C, vacuum-sintering 30-60min is increased to by stove vacuum-sintering temperature, subsequently changes MIM sintering most
High temperature section partial pressure sintering, the 1340 DEG C of sintering of the first stage highest temperature, furnace pressure divides 20Kpa, keeps the temperature 1 hour, second stage
The highest temperature 1340 is sintered, and divides 80Kpa, keeps the temperature 2 hours, and partial pressure stage whole process is with 20-30L/min applying argon gas；It finally carries out fast
Quickly cooling but and heat treatment.
Table 1 is：Without magnetic SUS630 processing technology phase tables
The mode heat-treating methods being quickly cooled down are：Pressure cooling is carried out from 1100 DEG C of opening fans, entirely
Cooling procedure applying argon gas (Ar), furnace pressure 50-86Kpa are cooled to 60-70 DEG C or less and come out of the stove and be heat-treated；Work as sintering
Section stove is come out of the stove after cooling to 60 DEG C；It reuses vacuum heat stove to be heat-treated, heat treatment process：A, with certain liter
Warm rate is raised to 1100-1250 DEG C, 2-3H is kept the temperature, using nitrogen as protective gas；B, with the cooling of 150-180 DEG C/min speed
Rate, fast cooling is to 60 DEG C.
With the above structure, the present invention has the beneficial effect that：It utilizes MIM vacuum drying oven sintering process sections；By 17-4PH materials
Material is accomplished nonmagnetic；Hardness without magnetic 17-4, yield strength, the performances such as tensile strength are all better than 316 materials；And without magnetic 17-4's
Salt fog can be kept 48 hours.
Claims (2)
1. processing the method without magnetic SUS630 using vacuum sintering furnace, it is characterised in that：Its processing method：First according to product
Structure, product thickness, shape of product, technique initialization time 210-300min are heated to 600 DEG C of laggard trip temperatures from room temperature and keep,
And nitrogen is filled with 50-55L/min and carries out negative pressure hot defatting, ensure that interiors of products bonding agent whole degreasing is completed, then basis
Stove vacuum-sintering temperature is increased to 950-1100 DEG C by the actual temperature of stove, and vacuum-sintering 30-60min subsequently changes
Becoming MIM sintering highest temperature section partial pressure sintering, 1340 DEG C of the first stage highest temperature is sintered, furnace pressure divides 20Kpa, and heat preservation 1 is small
When, the second stage highest temperature 1340 is sintered, and divides 80Kpa, keeps the temperature 2 hours, and partial pressure stage whole process is with 20-30L/min applying argon gas；
It is warming up to 1100-1250 DEG C with certain heating rate again, heat preservation a period of time, the mode being then quickly cooled down is heat-treated.
2. according to claim 1 process the method without magnetic SUS630 using vacuum sintering furnace, it is characterised in that：Described
The mode heat-treating methods being quickly cooled down are：Pressure cooling, entire cooling procedure applying argon gas are carried out from 1100 DEG C of opening fans
(Ar), furnace pressure 50-86Kpa, is cooled to 60-70 DEG C or less and comes out of the stove and be heat-treated；When sintering stage stove cools to 60
It comes out of the stove after DEG C；It reuses vacuum heat stove to be heat-treated, heat treatment process：A, it is raised to certain heating rate
1100-1250 DEG C, 2-3H is kept the temperature, using nitrogen as protective gas；B, with the rate of temperature fall of 150-180 DEG C/min, fast prompt drop
Temperature is to 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052204.8A CN108286903A (en) | 2018-01-19 | 2018-01-19 | The method without magnetic SUS630 is processed using vacuum sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052204.8A CN108286903A (en) | 2018-01-19 | 2018-01-19 | The method without magnetic SUS630 is processed using vacuum sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286903A true CN108286903A (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810052204.8A Pending CN108286903A (en) | 2018-01-19 | 2018-01-19 | The method without magnetic SUS630 is processed using vacuum sintering furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793764A (en) * | 2020-07-15 | 2020-10-20 | 深圳市泛海统联精密制造股份有限公司 | Sintering method of ultra-low carbon iron-nickel alloy |
| CN114737117A (en) * | 2022-03-31 | 2022-07-12 | 广东潮艺金属实业有限公司 | High-hardness and high-rust-resistance stainless steel 316L and sintering process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5993507A (en) * | 1997-12-29 | 1999-11-30 | Remington Arms Co., Inc. | Composition and process for metal injection molding |
| EP1113893B1 (en) * | 1998-08-27 | 2004-04-21 | Rutgers, The State University of New Jersey | Process for debinding and sintering metal injection molded parts made with an aqueous binder |
| KR20150006215A (en) * | 2013-07-08 | 2015-01-16 | 영남대학교 산학협력단 | Method for manufacturing high strength alloy for metal injection molding |
| CN105537595A (en) * | 2015-12-28 | 2016-05-04 | 上海富驰高科技有限公司 | MIM manufacturing process for non-magnetic 17-4P stainless steel parts |
| CN105618765A (en) * | 2016-01-06 | 2016-06-01 | 曲靖中铭科技有限公司 | Co-sintering molding technology of MIM (metal injection molding) blank and metal product |
| CN107436097A (en) * | 2016-05-26 | 2017-12-05 | 东庚实业股份有限公司 | Cooling means, sintering process and the sintering furnace of sintering furnace |
-
2018
- 2018-01-19 CN CN201810052204.8A patent/CN108286903A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5993507A (en) * | 1997-12-29 | 1999-11-30 | Remington Arms Co., Inc. | Composition and process for metal injection molding |
| EP1113893B1 (en) * | 1998-08-27 | 2004-04-21 | Rutgers, The State University of New Jersey | Process for debinding and sintering metal injection molded parts made with an aqueous binder |
| KR20150006215A (en) * | 2013-07-08 | 2015-01-16 | 영남대학교 산학협력단 | Method for manufacturing high strength alloy for metal injection molding |
| CN105537595A (en) * | 2015-12-28 | 2016-05-04 | 上海富驰高科技有限公司 | MIM manufacturing process for non-magnetic 17-4P stainless steel parts |
| CN105618765A (en) * | 2016-01-06 | 2016-06-01 | 曲靖中铭科技有限公司 | Co-sintering molding technology of MIM (metal injection molding) blank and metal product |
| CN107436097A (en) * | 2016-05-26 | 2017-12-05 | 东庚实业股份有限公司 | Cooling means, sintering process and the sintering furnace of sintering furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793764A (en) * | 2020-07-15 | 2020-10-20 | 深圳市泛海统联精密制造股份有限公司 | Sintering method of ultra-low carbon iron-nickel alloy |
| CN114737117A (en) * | 2022-03-31 | 2022-07-12 | 广东潮艺金属实业有限公司 | High-hardness and high-rust-resistance stainless steel 316L and sintering process thereof |
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Application publication date: 20180717 |
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