CN103302414A - Vacuum connecting method for stainless steel pieces - Google Patents
Vacuum connecting method for stainless steel pieces Download PDFInfo
- Publication number
- CN103302414A CN103302414A CN2013101913493A CN201310191349A CN103302414A CN 103302414 A CN103302414 A CN 103302414A CN 2013101913493 A CN2013101913493 A CN 2013101913493A CN 201310191349 A CN201310191349 A CN 201310191349A CN 103302414 A CN103302414 A CN 103302414A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- vacuum
- temperature
- graphite
- steel part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a vacuum connecting method for stainless steel pieces, which is used for solving the technical problem of poor joint strength in the conventional connecting method for the stainless steel pieces. The technical scheme comprises the following steps: firstly polishing and ultrasonic cleaning to-be-connected surfaces of the stainless steel, jointing the processed to-be-connected surfaces of the stainless steel together, placing the processed to-be-connected surfaces of the stainless steel between graphite pressure heads of the vacuum hot-pressing furnace, placing a graphite paper between the stainless steel pieces and the graphite pressure heads to be taken as anti-weld flux, vacuumizing through warming, preserving heat and exerting pressure, and maintaining pressure at the constant temperature, finishing the pressurization, stopping vacuumizing when the temperature in the furnace is dropped, filling high-purity argon, and gaining a finished connected stainless steel piece. As the vacuum connection is metallurgy connection, the joint shearing strength of the stainless steel piece joints is enhanced; and the joint shearing strength of the stainless steel piece joints is 88 to 95.3 % of the shearing strength of the primary structure.
Description
Technical field
The present invention relates to a kind of vacuum method of attachment, particularly a kind of vacuum method of attachment of stainless steel part.
Background technology
Connect stainless steel with conventional fusion welding method and form wideer weld seam and heat affected area easily, and under the effect of Thermal Cycle, weld seam and heat affected area be as-welded to be organized as hard and crisp martensitic structure, easily forms cold crack, and joint quality is poor.
Document 1 " the stainless STUDY ON THE WELDING of ZG1Cr2Ni3MoCo2VN; Wang Xiaodong; Su Jin, Wei Lei, Liu Wenna; metal processing; 2010,20:52～54 " discloses a kind of use manual TIG soldering method and has connected the stainless method of ZG1Cr2Ni3MoCo2VN, and this method austenite occurs easily to martensite transfor mation in the quick cooling procedure of welding, its hardness increases and the plasticity reduction, causes strong tendency of hardenability; Under the acting in conjunction of weld seam diffusible hydrogen and welding stress, weld residual stress is bigger, easily cracks, and it is relatively poor to connect effect.When connecing method connection stainless steel with high energy beam fluid weldings such as Laser Welding, though weld seam and the heat affected area of the stainless steel adapting piece that obtains obviously reduce than fusion welding method, joint quality and precision improve a lot, but it remains the melting that welding temperature is higher than the mother metal fusing point, inevitably can cause fire damage to material, also there are certain gap in joint performance and substrate performance.
Point out in document 2 " research of the stainless laser weld microstructure and property of 2Cr13; Yu Heguo; Zhao Fei; modern mechanical; 2008, the 6:70～71 " literary composition that the weld seam center of process Laser Welding is organized as equiax crystal, nearly center is column crystal, the fusion area is dendritic crystalline substance and a spot of born of the same parents' shape crystalline substance, and the heat affected area mainly is made up of acicular martensitic structure; The weld metal zone core rigidities is about HV330, obviously descends from the heat affected area to base material hardness; The tensile strength of joint is 491MPa, and the tensile strength of base material is 660MPa, and the tensile strength of joint is 74.4% of base material, and fracture presents the brittle fracture feature.It is less to connect stainless open source literature with the method for friction welding; When connecting other types of steel, though its welding temperature is lower to the mother metal performance impact below the mother metal fusing point, the joint microscopic structure is inhomogeneous, causes joint performance to reduce.
For the connection of relatively large with groove stainless steel component, it is lack of penetration to use the method for conventional melting welding to occur joint face easily; For the connection of more small-sized with groove stainless steel component, the welding of trench wall is not easy to operate; Method cost with the high energy beam current welding is higher, apparatus expensive, and can't weld the stainless steel component that needs large tracts of land to connect; Use friction welding method to be difficult for welding on-circular cross-section class stainless steel component and heavy wall class stainless steel component.
Summary of the invention
In order to overcome the deficiency of existing stainless steel part method of attachment strength of joint difference, the invention provides a kind of vacuum method of attachment of stainless steel part.This method is at first polished and ultrasonic cleaning to stainless steel surface to be connected; Stainless steel surface to be connected after handling is fit together, be positioned between the graphite pressure head of vacuum hotpressing stove, between stainless steel part and graphite pressure head, place graphite paper as ending solder flux; Vacuumize, by heating up, be incubated, exert pressure, and the constant temperature pressurize; Pressurization finishes, and temperature stops to vacuumize after descending in the stove, and charges into high-purity argon gas, the stainless steel part that obtains connecting.Because it is metallurgical the connection that vacuum connects, and can improve the shearing strength of joint of stainless steel part joint.
The technical solution adopted for the present invention to solve the technical problems is: a kind of vacuum method of attachment of stainless steel part, be characterized in may further comprise the steps: with 80#, 240#, 600#, 1000#, the 1500#SiC waterproof abrasive paper stainless steel surface to be connected of polishing step by step, carry out ultrasonic cleaning more successively; Stainless steel surface to be connected after handling is fit together, be positioned between the graphite pressure head of vacuum hotpressing stove, between stainless steel part and graphite pressure head, place graphite paper as ending solder flux; Vacuum reaches 9 * 10
-3Begin during Pa to heat up, heating rate is 15 ℃/min, when temperature is increased to 1000～1050 ℃, and insulation 10min; Apply 10～15MPa pressure then, and constant temperature pressurize 30min; After pressurization finishes, stop to vacuumize when temperature is down to 350 ℃ in the stove, and charge into high-purity argon gas, argon pressure is 0.1MPa; When temperature is down to 100 ℃ in the stove, take out the stainless steel part that connects.
The invention has the beneficial effects as follows: because this method is at first polished and ultrasonic cleaning to stainless steel surface to be connected; Stainless steel surface to be connected after handling is fit together, be positioned between the graphite pressure head of vacuum hotpressing stove, between stainless steel part and graphite pressure head, place graphite paper as ending solder flux; Vacuumize, by heating up, be incubated, exert pressure, and the constant temperature pressurize; Pressurization finishes, and temperature stops to vacuumize after descending in the stove, and charges into high-purity argon gas, the stainless steel part that obtains connecting.Because it is metallurgical the connection that vacuum connects, and improves the shearing strength of joint of stainless steel part joint.The shearing strength of joint of stainless steel part joint is 88～95.3% of matrix shear strength.
Describe the present invention in detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is 1Cr11Ni2W2MoV stainless steel part linkage interface microstructure picture among the inventive method embodiment 1.
Fig. 2 is 1Cr11Ni2W2MoV stainless steel part linkage interface microstructure picture among the inventive method embodiment 2.
The specific embodiment
Embodiment 1: the connection material of present embodiment is the 1Cr11Ni2W2MoV stainless steel, and the 1Cr11Ni2W2MoV stainless steel is a kind of heat resistant type stainless steel.Key components and parts such as the engine blade of working below 600 ℃, dish, axle have been widely used in making.At present, the 1Cr11Ni2W2MoV stainless steel on multiple aero-engine for the manufacture of parts such as compressor disc, compressor blade, turbine wheel shaft and compression springs.Before the connection, with 80#, 240#, 600#, 1000#, the 1500#SiC waterproof abrasive paper 1Cr11Ni2W2MoV stainless steel surface to be connected of polishing step by step, carry out ultrasonic cleaning more successively; 1Cr11Ni2W2MoV stainless steel surface to be connected after handling is fit together, be positioned between the graphite pressure head of ZYD-60L vacuum hotpressing stove, between 1Cr11Ni2W2MoV stainless steel part and graphite pressure head, place graphite paper as ending solder flux; Vacuum reaches 9 * 10
-3Begin during Pa to heat up, heating rate is 15 ℃/min, when temperature is increased to 1000 ℃, and insulation 10min; Apply 15MPa pressure then, and constant temperature pressurize 30min; After pressurization finishes, stop to vacuumize when temperature is down to 350 ℃ in the stove, and charge into high-purity argon gas, argon pressure is 0.1MPa; When temperature is down to 100 ℃ in the stove, take out the 1Cr11Ni2V2MoV stainless steel part that connects.
After tested, the height economy before and after the 1Cr11Ni2W2MoV stainless steel part connects is 0.5%.The 1Cr11Ni2W2MoV stainless steel part is carried out linear incision produce metallographic specimen, select the H of 100ml for use
2The HNO of the mlHCl+50ml of O+50
3The FeCl of+5g
3Corrosive agent corrosion surface, etching time are 90～120s.The metallographic observation sample for preparing is placed on OLYMPUS-PMG3 type metallographic photographic system carries out microstructure observation and photograph.The microscopic structure of linkage interface as shown in Figure 1, the bracket among Fig. 1 is labeled as linkage interface.The cavity of connector linkage interface is closed substantially as seen from Figure 1, and the part crystal boundary begins migration, and it is better to connect effect.The shear strength test result shows: the shear strength of joint is 756.8MPa, and the shear strength of matrix is 860.1MPa, and shearing strength of joint is 88% of matrix shear strength.
The connection of embodiment 2:1Cr11Ni2W2MoV stainless steel part.Before the connection, with 80#, 240#, 600#, 1000#, the 1500#SiC waterproof abrasive paper 1Cr11Ni2W2MoV stainless steel part surface to be connected of polishing step by step, carry out ultrasonic cleaning then successively; 1Cr11Ni2V2MoV stainless steel part surface to be connected after handling is fit together, be positioned between the graphite pressure head of ZYD-60L vacuum hotpressing stove, between sample and graphite pressure head, place graphite paper as ending solder flux; Vacuum reaches 9 * 10
-3Begin during Pa to heat up, heating rate is 15 ℃/min, when temperature is increased to 1050 ℃, and insulation 10min; Open hydraulic control system then, apply 10MPa pressure, and constant temperature pressurize 30min; When stove in temperature be down to 350 ℃ stop to vacuumize, and charge into high-purity argon gas after finishing pressing time, and argon pressure is 0.1MPa; When temperature is down to 100 ℃ in the stove, take out the 1Cr11Ni2V2MoV stainless steel part that connects.
After tested, the height economy before and after the 1Cr11Ni2W2MoV stainless steel part connects is 0.4%.Connector is carried out linear incision produce metallographic specimen, select the H of 100ml for use
2The HNO of the HCl+50ml of O+50ml
3The FeCl of+5g
3Corrosive agent corrosion surface, etching time are 90～120s.The metallographic observation sample for preparing is placed on OLYMPUS-PMG3 type metallographic photographic system carries out microstructure observation and photograph.The microstructure of connector linkage interface as shown in Figure 2, Fig. 2 bracket is labeled as the position of linkage interface, linkage interface disappears as seen from Figure 2.The shear strength test result shows: the shear strength of joint is 820.5MPa, and the shear strength of matrix is 860.3MPa, and shearing strength of joint reaches 95.3% of matrix shear strength.
The connection of embodiment 3:1Cr11Ni2W2MoV stainless steel part.Before the connection, with 80#, 240#, 600#, 1000#, the 1500#SiC waterproof abrasive paper 1Cr11Ni2W2MoV stainless steel part surface to be connected of polishing step by step, carry out ultrasonic cleaning then successively; 1Cr11Ni2V2MoV stainless steel part surface to be connected after handling is fit together, be positioned between the graphite pressure head of ZYD-60L vacuum hotpressing stove, between sample and graphite pressure head, place graphite paper as ending solder flux; Vacuum reaches 9 * 10
-3Begin during Pa to heat up, heating rate is 15 ℃/min, when temperature is increased to 1025 ℃, and insulation 10min; Open hydraulic control system then, apply 12MPa pressure, and constant temperature pressurize 30min; When stove in temperature be down to 350 ℃ stop to vacuumize, and charge into high-purity argon gas after finishing pressing time, and argon pressure is 0.1MPa; When temperature is down to 100 ℃ in the stove, take out the 1Cr11Ni2V2MoV stainless steel part that connects.
Adopt the inventive method except the 1Cr11Ni2W2MoV stainless steel part is connected, the inventor also carries out vacuum to stainless steels such as ZG1Cr2Ni3MoCo2VN stainless steel and 2Cr13 stainless steels and connects test, has all obtained good effect.
Claims (1)
1. the vacuum method of attachment of a stainless steel part is characterized in that may further comprise the steps: with 80#, 240#, 600#, 1000#, the 1500#SiC waterproof abrasive paper stainless steel surface to be connected of polishing step by step, carry out ultrasonic cleaning more successively; Stainless steel surface to be connected after handling is fit together, be positioned between the graphite pressure head of vacuum hotpressing stove, between stainless steel part and graphite pressure head, place graphite paper as ending solder flux; Vacuum reaches 9 * 10
-3Begin during Pa to heat up, heating rate is 15 ℃/min, when temperature is increased to 1000～1050 ℃, and insulation 10min; Apply 10～15MPa pressure then, and constant temperature pressurize 30min; After pressurization finishes, stop to vacuumize when temperature is down to 350 ℃ in the stove, and charge into high-purity argon gas, argon pressure is 0.1MPa; When temperature is down to 100 ℃ in the stove, take out the stainless steel part that connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101913493A CN103302414A (en) | 2013-05-22 | 2013-05-22 | Vacuum connecting method for stainless steel pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101913493A CN103302414A (en) | 2013-05-22 | 2013-05-22 | Vacuum connecting method for stainless steel pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103302414A true CN103302414A (en) | 2013-09-18 |
Family
ID=49128371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101913493A Pending CN103302414A (en) | 2013-05-22 | 2013-05-22 | Vacuum connecting method for stainless steel pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103302414A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504173A (en) * | 2014-11-26 | 2015-04-08 | 西北工业大学 | Method for predicting connectivity of titanium alloy pressure connecting interface coupling grain size |
| CN105537748A (en) * | 2016-01-28 | 2016-05-04 | 西北工业大学 | Solid-state jointing method for hollow type 1Cr11Ni2W2MoV steel pieces |
| CN105880770A (en) * | 2016-04-01 | 2016-08-24 | 中国电子科技集团公司第三十八研究所 | Protection process of antenna welding surface |
| CN113369800A (en) * | 2020-03-09 | 2021-09-10 | 天津大学 | Method for obtaining solid phase diffusion connection of low-activation ferrite/martensite steel and TP347H austenite steel reliable joint |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020148880A1 (en) * | 2001-04-17 | 2002-10-17 | Damon Brink | Metal laminate structure and method for making |
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN101745736A (en) * | 2009-12-23 | 2010-06-23 | 西北工业大学 | Copper alloy and stainless diffusion welding method |
| CN102744517A (en) * | 2012-07-05 | 2012-10-24 | 北京科技大学 | Method for manufacturing dual-phase stainless steel hollow sandwich structure element |
| CN102922230A (en) * | 2012-10-23 | 2013-02-13 | 西安航空动力股份有限公司 | Method for brazing martensitic stainless steel rectifier assembly through vacuum |
| CN102922123A (en) * | 2012-11-08 | 2013-02-13 | 西安智拓精密焊接科技有限公司 | Method for welding stainless filter element |
-
2013
- 2013-05-22 CN CN2013101913493A patent/CN103302414A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020148880A1 (en) * | 2001-04-17 | 2002-10-17 | Damon Brink | Metal laminate structure and method for making |
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN101745736A (en) * | 2009-12-23 | 2010-06-23 | 西北工业大学 | Copper alloy and stainless diffusion welding method |
| CN102744517A (en) * | 2012-07-05 | 2012-10-24 | 北京科技大学 | Method for manufacturing dual-phase stainless steel hollow sandwich structure element |
| CN102922230A (en) * | 2012-10-23 | 2013-02-13 | 西安航空动力股份有限公司 | Method for brazing martensitic stainless steel rectifier assembly through vacuum |
| CN102922123A (en) * | 2012-11-08 | 2013-02-13 | 西安智拓精密焊接科技有限公司 | Method for welding stainless filter element |
Non-Patent Citations (1)
| Title |
|---|
| 李亚江等: "Fe3Al/18-8不锈钢扩散焊界面附近的元素扩散", 《金属学报》, vol. 41, no. 2, 28 February 2005 (2005-02-28), pages 151 - 3 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504173A (en) * | 2014-11-26 | 2015-04-08 | 西北工业大学 | Method for predicting connectivity of titanium alloy pressure connecting interface coupling grain size |
| CN104504173B (en) * | 2014-11-26 | 2017-10-03 | 西北工业大学 | Couple the titanium alloy press-in connection interface bonding ratio Forecasting Methodology of crystallite dimension |
| CN105537748A (en) * | 2016-01-28 | 2016-05-04 | 西北工业大学 | Solid-state jointing method for hollow type 1Cr11Ni2W2MoV steel pieces |
| CN105880770A (en) * | 2016-04-01 | 2016-08-24 | 中国电子科技集团公司第三十八研究所 | Protection process of antenna welding surface |
| CN113369800A (en) * | 2020-03-09 | 2021-09-10 | 天津大学 | Method for obtaining solid phase diffusion connection of low-activation ferrite/martensite steel and TP347H austenite steel reliable joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101745736B (en) | Diffusion welding method of copper alloy and stainless steel | |
| CN101362253B (en) | TiNi shape memory alloy and stainless steel instant liquid-phase diffusion welding connection method | |
| CN105346161A (en) | Tungsten/transition layer/steel composite material and low-temperature and low-pressure active diffusion connection preparation method thereof | |
| CN111347146B (en) | Tungsten and heat sink material connector and preparation method thereof | |
| CN110732768B (en) | Same kind/dissimilar metal connection forming method based on amorphous alloy | |
| CN102489813B (en) | Vacuum active brazing process of molybdenum-copper alloys and stainless steel | |
| CN102513636B (en) | Brazing method capable of reducing residual stress on ceramic and metal joints | |
| CN102151930A (en) | Dissimilar metal material brazing method | |
| CN102328153B (en) | Crimping diffusion welding process of aluminum or aluminum alloy and heterogeneous metal | |
| CN102059449B (en) | Diffusion welding method of tungsten alloy and tantalum alloy at low temperature | |
| CN103302414A (en) | Vacuum connecting method for stainless steel pieces | |
| CN106825885A (en) | A kind of connection method of TZM alloys and WRe alloys under electric field-assisted | |
| CN108262483B (en) | SPS sintering connection method for tungsten and molybdenum dissimilar refractory metal | |
| CN101244483A (en) | Self-nano-structure diffusion welding technique for titanium alloy and stainless steel surface | |
| CN111347147B (en) | Hot isostatic pressing connection method of tungsten and heat sink material | |
| CN104014922A (en) | Fast-diffusion welding method of hard alloy and steel | |
| CN103302371A (en) | Diffusion bonding method of hard alloy and metal | |
| CN110666328B (en) | Diffusion welding method for cast high-temperature alloy and martensitic stainless steel | |
| CN106271013A (en) | A kind of coarse vacuum diffusion welding method of copper and copper alloy and steel | |
| CN101699021A (en) | Friction welding type kelly bar | |
| CN101391263A (en) | Manufacture method of transition joint for welding titanium alloy and stainless steel component | |
| CN105312742A (en) | Welding technology | |
| CN105290554B (en) | A kind of vacuum brazing technique of niobium tungsten alloy and stainless steel ring-shaped work pieces | |
| CN104772542A (en) | WC particle in-situ reinforced hard alloy and steel ultrasonic soldering method | |
| CN105965176B (en) | For soldering tungsten-copper alloy and the Ni base chilling solders and soldering processes of stainless steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |