CN103722294A - Copper-chromium alloy and stainless steel connecting method - Google Patents

Copper-chromium alloy and stainless steel connecting method Download PDF

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Publication number
CN103722294A
CN103722294A CN201310638247.1A CN201310638247A CN103722294A CN 103722294 A CN103722294 A CN 103722294A CN 201310638247 A CN201310638247 A CN 201310638247A CN 103722294 A CN103722294 A CN 103722294A
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coupon
stainless steel
chromiumcopper
copper
attachment
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CN103722294B (en
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梁淑华
张乔
肖鹏
邹军涛
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Xian University of Technology
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Xian University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/003—Welding in a furnace
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium

Abstract

The invention discloses a copper-chromium alloy and stainless steel connecting method. After the surface of a stainless steel step-shaped sample block and the surface of a copper-chromium alloy sample block are cleaned, the stainless steel step-shaped sample block is plated with a chromium layer, then the copper-chromium alloy sample block is placed on the stainless steel step-shaped sample block, the copper-chromium alloy sample block and the stainless steel step-shaped sample block are placed in a graphite crucible with active carbon at the bottom to be subjected to welding processing, and accordingly a copper-chromium alloy-stainless steel thermometal material is acquired. The test that the combining interface of the copper-chromium alloy-stainless steel thermometal material acquired through the copper-chromium alloy and stainless steel connecting method is subjected to a series of representations like structure and component analysis and tensile strength detection indicates that the interface strength stability is higher than that of a base body and is obviously improved. The copper-chromium alloy and stainless steel connecting method is a technical method for connecting dissimilar materials.

Description

A kind of chromiumcopper and stainless method of attachment
Technical field
The invention belongs to foreign material interconnection technique field, relate to a kind of chromiumcopper and stainless method of attachment.
Background technology
Along with developing rapidly of science and technology, more and more higher to the requirement of material property, existing homogenous material can not meet some Special use requirements far away.For this reason, both at home and abroad a large amount of scholars adopt various interconnection techniques that the material of different performance is coupled together, and learn from other's strong points to offset one's weaknesses, obtain homogenous material incomparable, novel dual metal material that combination property is superior.Chromiumcopper-rustless steel double-metal material that chromiumcopper and stainless steel are formed by connecting is owing to having the advantages such as the mechanical performance that high conduction performance, high thermal conductivity, low contact resistance and the stainless steel of chromiumcopper is corrosion-resistant, good simultaneously, thereby has broad application prospects in the fields such as Aero-Space, automobile making, nuclear energy engineering, machine-building.
At present, applying interconnection technique more widely mainly contains: mechanical connection, splicing and welding etc.But the interface binding power of the bimetallic material that these methods obtain is low, near the material property in land reduces, and cannot form desirable interface binder course, larger on the serviceability impact of its integral material.
Summary of the invention
The object of this invention is to provide a kind of chromiumcopper and stainless method of attachment, solved the problem that bimetallic material interface binding power is low, near the material property in land reduces that existing interconnection technique obtains.
The technical solution adopted in the present invention is, a kind of chromiumcopper and stainless method of attachment, respectively stainless steel ladder coupon and chromiumcopper coupon are carried out after surface clean, surface attachment one deck chromium with electric plating method at stainless steel ladder coupon, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon and carries out welding processing, obtains chromiumcopper-rustless steel double-metal material.
Feature of the present invention is also,
Stainless steel ladder coupon obtains in the following manner: the stainless steel bars that is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer the ladder coupon of Φ 26 × 30+ Φ 13 × 10.
Chromiumcopper coupon obtains in the following manner: the coupon that chromium content 0.5～0.8wt% chromiumcopper bar is cut into Φ 28 × 40.
Surface clean specific operation process is as follows: stainless steel ladder coupon and chromiumcopper coupon are first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt.
Welding is carried out in micro-computer controlled high temperature sintering furnace, and specific operation process is: the firing rate with 15～25 ℃/min heats, when temperature reaches 1080～1180 ℃, cooling with stove after insulation 30～90min.
The invention has the beneficial effects as follows, chromiumcopper of the present invention and stainless method of attachment, by plated surface one deck chromium of stainless steel ladder coupon, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon and carries out welding processing, obtain the stable chromiumcopper-rustless steel double-metal material higher than matrix of boundary strength, by analysis, find, interface stability significantly improves, for the connection of foreign material provides a kind of technical method.
Accompanying drawing explanation
Fig. 1 is the process chart of chromiumcopper of the present invention and stainless method of attachment;
Fig. 2 is the placement sequential schematic of coupon in graphite crucible in method of attachment of the present invention;
Fig. 3 is the fracture SEM figure of chromiumcopper-rustless steel double-metal material of obtaining of the embodiment of the present invention 1;
Fig. 4 is the partial enlarged drawing of Fig. 3.
In figure, 1. chromiumcopper coupon, 2. stainless steel ladder coupon, 3. porous ceramics dividing plate, 4. active carbon.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of chromiumcopper of the present invention and stainless method of attachment, respectively stainless steel ladder coupon and chromiumcopper coupon are carried out after surface clean, surface attachment one deck chromium with electric plating method at stainless steel ladder coupon, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon and carries out welding processing, obtains chromiumcopper-rustless steel double-metal material.
As shown in Figure 1, specifically according to following steps, implement:
Step 1, the ladder coupon that the stainless steel bars that is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer Φ 26 × 30+ Φ 13 × 10 obtains stainless steel ladder coupon; The coupon that chromium content 0.5～0.8wt% chromiumcopper bar is cut into Φ 28 × 40, obtains chromiumcopper coupon;
Step 2, obtains stainless steel ladder coupon by step 1 and chromiumcopper coupon is first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt;
Step 3, adopt surface attachment one deck chromium of the stainless steel ladder coupon of electric plating method after surface clean, as shown in Figure 2, then after chromiumcopper coupon 1 being put in above stainless steel ladder coupon 2, being together positioned over bottom has in the graphite crucible of active carbon 4, between stainless steel ladder coupon 2 and active carbon 4, be placed with one deck porous ceramics dividing plate 3, in micro-computer controlled high temperature sintering furnace, carry out welding processing, specific operation process is: the firing rate with 15～25 ℃/min heats, when temperature reaches 1080～1180 ℃, cooling with stove after insulation 30～90min, obtain chromiumcopper-rustless steel double-metal material.
Some activated carbon granules are placed in graphite crucible bottom, between active carbon and stainless steel ladder coupon, be placed with one deck porous ceramics dividing plate, porous ceramics dividing plate can be communicated with the active carbon of crucible bottom and the coupon of top, makes active carbon can bring into play its reduction.
Embodiment 1
The stainless steel bars (Φ 30) that step 1 is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer the ladder coupon of Φ 26 × 30+ Φ 13 × 10, obtains stainless steel ladder coupon; The coupon that chromium content 0.5～0.8wt% chromiumcopper bar (Φ 30) is cut into Φ 28 × 40, obtains chromiumcopper coupon;
Step 2, obtains stainless steel ladder coupon by step 1 and chromiumcopper coupon is first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt;
Step 3, adopt surface attachment one deck chromium of the stainless steel ladder coupon of electric plating method after surface clean, as shown in Figure 2, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon, between stainless steel ladder coupon and active carbon, be placed with one deck porous ceramics dividing plate, in micro-computer controlled high temperature sintering furnace, carry out welding processing, specific operation process is: the firing rate with 15 ℃/min heats, when temperature reaches 1120 ℃, cooling with stove after insulation 60min, obtain chromiumcopper-rustless steel double-metal material.
Embodiment 2
The stainless steel bars (Φ 30) that step 1 is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer the ladder coupon of Φ 26 × 30+ Φ 13 × 10, obtains stainless steel ladder coupon; The coupon that chromium content 0.5～0.8wt% chromiumcopper bar (Φ 30) is cut into Φ 28 × 40, obtains chromiumcopper coupon;
Step 2, obtains stainless steel ladder coupon by step 1 and chromiumcopper coupon is first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt;
Step 3, adopt surface attachment one deck chromium of the stainless steel ladder coupon of electric plating method after surface clean, as shown in Figure 2, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon, between stainless steel ladder coupon and active carbon, be placed with one deck porous ceramics dividing plate, in micro-computer controlled high temperature sintering furnace, carry out welding processing, specific operation process is: the firing rate with 20 ℃/min heats, when temperature reaches 1080 ℃, cooling with stove after insulation 90min, obtain chromiumcopper-rustless steel double-metal material.
Embodiment 3
The stainless steel bars (Φ 30) that step 1 is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer the ladder coupon of Φ 26 × 30+ Φ 13 × 10, obtains stainless steel ladder coupon; The coupon that chromium content 0.5～0.8wt% chromiumcopper bar (Φ 30) is cut into Φ 28 × 40, obtains chromiumcopper coupon;
Step 2, obtains stainless steel ladder coupon by step 1 and chromiumcopper coupon is first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt;
Step 3, adopt surface attachment one deck chromium of the stainless steel ladder coupon of electric plating method after surface clean, as shown in Figure 2, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon, between stainless steel ladder coupon and active carbon, be placed with one deck porous ceramics dividing plate, in micro-computer controlled high temperature sintering furnace, carry out welding processing, specific operation process is: the firing rate with 25 ℃/min heats, when temperature reaches 1180 ℃, cooling with stove after insulation 30min, obtain chromiumcopper-rustless steel double-metal material.
Chromiumcopper/rustless steel double-metal material that embodiment 1 is obtained carries out line cutting and machined is prepared into metallographic specimen and tension coupon, by metallographic microscope or its combination interface of scanning electron microscopic observation, with universal testing machine, carry out tensile test and record its interface bond strength σ b=392MPa, apparently higher than the intensity of matrix chromiumcopper self.Fig. 3 is the fracture SEM figure of chromiumcopper-rustless steel double-metal material reducing coupon of obtaining of the embodiment of the present invention 1; Fig. 4 is the partial enlarged drawing of Fig. 3, from Fig. 3 and Fig. 4, can find, although designed reducing coupon, but rupture in the CuCr of combination interface place alloy side, illustrate that interface binding power is higher than measured value 392MPa, interface, in conjunction with good, far above the intensity of chromiumcopper self, can meet its normal instructions for use.
Chromiumcopper of the present invention and stainless method of attachment, by plated surface one deck chromium of stainless steel ladder coupon, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon and carries out welding processing, obtain the stable chromiumcopper-rustless steel double-metal material higher than matrix of boundary strength, then this bimetallic material combination interface is carried out to microstructure and composition analysis, the a series of signs such as tensile strength detection, find that boundary strength is stable higher than matrix, interface stability is significantly improved, for the connection of foreign material provides a kind of technical method.

Claims (5)

1. a chromiumcopper and stainless method of attachment, it is characterized in that, respectively stainless steel ladder coupon and chromiumcopper coupon are carried out after surface clean, surface attachment one deck chromium with electric plating method at stainless steel ladder coupon, then after chromiumcopper coupon being put in above stainless steel ladder coupon, being together positioned over bottom has in the graphite crucible of active carbon and carries out welding processing, obtains chromiumcopper-rustless steel double-metal material.
2. chromiumcopper according to claim 1 and stainless method of attachment, it is characterized in that, stainless steel ladder coupon obtains in the following manner: the stainless steel bars that is 1Cr18Ni9Ti by material carries out being processed into after machined deoxidation layer the ladder coupon of Φ 26 × 30+ Φ 13 × 10.
3. chromiumcopper according to claim 1 and stainless method of attachment, is characterized in that, chromiumcopper coupon obtains in the following manner: the coupon that chromium content 0.5～0.8wt% chromiumcopper bar is cut into Φ 28 × 40.
4. chromiumcopper according to claim 1 and stainless method of attachment, it is characterized in that, surface clean specific operation process is as follows: stainless steel ladder coupon and chromiumcopper coupon are first wiped clean surface and oil contaminant with soft cloth or paper, is immersed in subsequently in alcohol reagent, to carry out supersonic oscillations and remove remaining greasy dirt.
5. according to claim 1～4 arbitrary described chromiumcopper and stainless method of attachment, it is characterized in that, welding is carried out in micro-computer controlled high temperature sintering furnace, specific operation process is: the firing rate with 15～25 ℃/min heats, when temperature reaches 1080～1180 ℃, cooling with stove after insulation 30～90min.
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN104259439A (en) * 2014-09-16 2015-01-07 西安理工大学 Preparation method for aluminium bronze-stainless steel double-metal composite material
CN104384737A (en) * 2014-09-19 2015-03-04 西安理工大学 Liquid-solid connection method for tungsten-copper pseudoalloy and stainless steel special-shape part
CN104475701A (en) * 2014-12-08 2015-04-01 西安理工大学 Production method of steel clad copper composite
CN107584127A (en) * 2017-08-25 2018-01-16 苏州志烽密姆粉末冶金有限公司 The method and engaging member that binary pseudo-alloy is combined with the alloy interface containing transition metal
CN107738030A (en) * 2017-09-20 2018-02-27 西安理工大学 A kind of law temperature joining method of aluminium bronze and stainless steel
CN107775168A (en) * 2017-09-20 2018-03-09 西安理工大学 A kind of connection method of chromiumcopper and stainless steel
EP3797915A1 (en) * 2019-09-26 2021-03-31 Ingersoll-Rand Industrial U.S., Inc. Components and the manufacture thereof via welding with reduced alloy-depletion

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259439A (en) * 2014-09-16 2015-01-07 西安理工大学 Preparation method for aluminium bronze-stainless steel double-metal composite material
CN104384737A (en) * 2014-09-19 2015-03-04 西安理工大学 Liquid-solid connection method for tungsten-copper pseudoalloy and stainless steel special-shape part
CN104475701A (en) * 2014-12-08 2015-04-01 西安理工大学 Production method of steel clad copper composite
CN107584127A (en) * 2017-08-25 2018-01-16 苏州志烽密姆粉末冶金有限公司 The method and engaging member that binary pseudo-alloy is combined with the alloy interface containing transition metal
CN107738030A (en) * 2017-09-20 2018-02-27 西安理工大学 A kind of law temperature joining method of aluminium bronze and stainless steel
CN107775168A (en) * 2017-09-20 2018-03-09 西安理工大学 A kind of connection method of chromiumcopper and stainless steel
EP3797915A1 (en) * 2019-09-26 2021-03-31 Ingersoll-Rand Industrial U.S., Inc. Components and the manufacture thereof via welding with reduced alloy-depletion
US11724311B2 (en) * 2019-09-26 2023-08-15 Ingersoll-Rand Industrial U.S., Inc. Components and the manufacture thereof via welding with reduced alloy-depletion

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