CN106825898B - A kind of explosive welding processing method of stainless steel magnesium alloy composite board - Google Patents
A kind of explosive welding processing method of stainless steel magnesium alloy composite board Download PDFInfo
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- CN106825898B CN106825898B CN201710052454.7A CN201710052454A CN106825898B CN 106825898 B CN106825898 B CN 106825898B CN 201710052454 A CN201710052454 A CN 201710052454A CN 106825898 B CN106825898 B CN 106825898B
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/15—Magnesium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of explosion welding method of stainless steel magnesium alloy composite board, belongs to composite plate preparing technical field, it is cladding using stainless steel, and magnesium alloy is base, and explosive welding is carried out using expanded ammonium nitrate composite explosives as the explosion energy;Magnesium alloy plate is made annealing treatment before explosive welding, mechanical grinding stainless steel, magnesium alloy plate face to be combined, destructor is mounted on earthen foundation, rubber layer is laid on ground, using expanded ammonium nitrate composite explosives, electric cap is remotely ignited.The present invention is easy to operate, and economical, Surface bond rate 100%, interface bond strength 130.0Mpa is the feasible method for preparing stainless steel magnesium alloy composite board.
Description
Technical field
The invention belongs to composite plate preparing technical fields, and specifically stainless steel and magnesium alloy is compound.
Background technology
The deficiencies of intrinsic plastic deformation ability of magnesium alloy is low, surface gap sensibility is strong, corrosion resistance is poor so that magnesium alloy
Application relative to numerous metal materials is quite limited.
Improving the corrosive method of Mg alloy surface at present has the methods of plating, chemical plating, thermal spraying to add for magnesium alloy
Add metal coating, improves the corrosivity of magnesium alloy substrate.Aforesaid operations are complicated, and coating is thin, and coating is with magnesium matrix bond strength
It is low, the mechanical property of magnesium alloy substrate is not improved.
Stainless steel is a kind of high-alloy steel that can resist acid, alkali, salt and its solution and the corrosion of some other corrosive medium,
It is one of most widely used metal in industrial production.Stainless steel in addition to outstanding corrosion resistance, also have excellent mechanical strength,
High-temperature oxidation, toughness and weldability.There is plasticity height, erosion-resisting feature in view of stainless steel, if by magnesium alloy and not
Rust steel, which combines, is made composite wood plate, can not only improve the surface corrosion resistance performance of magnesium alloy materials, can also improve magnesium alloy base
The comprehensive mechanical property of body meets the service demand of material.This is the effective way for widening magnesium alloy materials application, is had important
Practical significance.
Known by iron magnesium binary phase diagraml, ferro element is closed with indissoluble on magnesium elements metallurgy, and magnesium alloy and stainless steel fusing point phase
Poor very big, the difference of two kinds of materials in itself has manufactured difficulty for the connection of two kinds of materials.Explosive welding be suitable for it is of the same race or
The production of person's dissimilar metal clad plate, but the material of poor toughness easy tos produce embrittlement when implementing explosive welding.
Chinese patent " magnesium-steel composite board and preparation method thereof " (publication number CN103551383) is disclosed with rolling
Method magnesium steel composite board, this method need addition middle layer that could realize the combination of magnesium steel, are increased to the manufacture of composite plate
Cost, explosive welding need not add middle layer, can be with straight forming.
Invention content
The purpose of the present invention is the situations for background technology to be utilized by the patent to magnesium alloy materials before welding
Specific explosion weld process makes the magnesium alloy plate of plasticity difference, and with indissoluble on metallurgy, the stainless steel that fusing point differs greatly, which is realized, to be connected
It connects, stainless steel magnesium alloy composite board is made, magnesium alloy matrix surface corrosion resistance and comprehensive mechanical property can be improved, the present invention helps
In the use scope for expanding magnesium alloy plate.
Technical solution of the present invention:A kind of explosion welding method of stainless steel magnesium alloy composite board, it is characterised in that:Using not
Rust steel is cladding, and magnesium alloy is base, using expanded ammonium nitrate composite explosives as the explosion energy.
Expanded ammonium nitrate composite explosives proportioning is ammonium nitrate 85%, diesel oil 3%, sawdust 8.5%, industrial salt 3.5%, puffing
The density 0.85g/cm of ammonium nitrate composite explosives3, 2500 ~ 2700m/s of detonation velocity.
A kind of explosion welding method of stainless steel magnesium alloy composite board, it is characterised in that:Explosive welding includes the following steps:
(1)Select magnesium alloy plate and stainless steel plate as the base material of explosive welding;And annealing toughening is carried out to magnesium alloy plate;
(2)It polishes magnesium alloy plate and stainless steel plate interface to be combined;
(3)Cushion rubber layer is padded below magnesium alloy plate, arranges gap column on magnesium alloy plate, the height of gap column=
(1.5~2.5)× stainless steel plate thickness, the spacing between the column of gap is 100mm, and in gap, stainless steel plate is placed above in column, stainless
Apply butter above steel plate, uniform thickness is not laid with one layer of explosive above butter, and it is thick that initiation ends explosive thickness is more than explosion ending end explosive
Degree is fried, and medicine layer is seamlessly transitted from initiation ends to explosion end;
(4)Detonator is inserted into explosive layer, the cap length for being inserted into explosive layer is more than the half of initiation ends explosive thickness,
And 2 ~ 5mg hexogen is added in 5 ~ 10mm radius around detonator;
(5)Detonator lead is more than 40 meters, and using electromagnetic control apparatus detonating primer, explosive welding is completed.
The gap column is that a block length is 20mm, and width is(1.5~2.5)× stainless steel plate thickness, thickness are 0.5mm
Rectangle stainless steel thin slice, be bent several foldings in the length direction of rectangle stainless steel thin slice, bending angle is 100 ~ 120 degree;
It detects a flaw to stainless steel magnesium alloy composite board according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections,
Stainless steel magnesium alloy composite board Percentage bound 99.8%;According to GB/T6369-2008, test stainless steel magnesium alloy composite board interface is drawn
Intensity is cut, the tensile-sbear strength at interface is 120 ~ 138Mpa;Surface scan analysis, the composition of two planes of disruption are carried out to tensile-shear crack interface
The all magnesium of element illustrates that tensile-shear crack is happened at magnesium alloy position, it was demonstrated that explosive welding makes two kinds of magnesium alloy and stainless steel
Material produces firm combination;Combination interface is observed using surface sweeping Electronic Speculum SEM, calmodulin binding domain CaM shows microwave shape, utilizes
EDS does line surface sweeping analysis near interface, and magnesium elements and ferro element are spread.
The present invention has the following advantages compared with the prior art:
(1)Using explosive welding production magnesium steel composite board for rolling is processed, advantage is, base compound plate area,
Thickness is unrestricted, the board size of composite plate made of explosive welding, and thickness can configure the combination of two kinds of base materials as needed
Ratio.Not by equipment limit, manufacturing cost is low, does not add middle layer, easy to operate.
(2)Annealing patent is carried out to magnesium alloy plate before explosion, prevents blast process magnesium alloy embrittlement.
(3)It is buffered using rubber air mattress, prevents the magnesium alloy plate that ground recoil strength causes plasticity difference from cracking.
(4)Using this explosion welding technique, indissoluble on metallurgy is realized, the stainless steel and magnesium alloy that fusing point differs greatly are high
Effect connection.
(5)Stainless steel double can be effectively improved the characteristics of Mg alloy surface is easily corroded on magnesium alloy, and simultaneously synthesizing answers
Plywood intensity is higher than magnesium alloy substrate.
(6)It is compound after explosive welding using to the welding procedure of explosion ending place not uniform thickness cloth medicine, being reduced from initiation ends
The region area of the non-soldering of edges of boards circle.
(7)The defects of microstructure observation's interface pore-free, crackle, interface 120 ~ 138Mpa of tensile-sbear strength.
Description of the drawings
Fig. 1 is stainless steel/magnesium alloy composite board explosion welding apparatus schematic diagram;
In figure:1, earthen foundation, 2, rubber base plate, 3, magnesium alloy plate, 4, gap column, 5, stainless steel plate, 6 butter layers, 7 medicines
Frame, 8 nitrolites, 9 electric caps.
Fig. 2 is explosive welding stainless steel/magnesium alloy composite board interface microscopic appearance;
Fig. 3 is interface elemental line scan figure nearby;
Fig. 4 is the shape graph of the curved edges of intermediate gap column of the present invention.
Specific implementation mode one
(1)Select the base material of AZ31B magnesium alloy plates and 2205 stainless steel plates as explosive welding;And to AZ31B magnesium alloys
Plate carries out annealing toughening, 300 DEG C of annealing temperature, soaking time 120min;
AZ31B magnesium alloy plates:1000mmX600mmX3mm;
2205 stainless steel plates:1050 mmX650mmX2mm;
(2)Using the method for mechanical grinding, the oxidation of AZ31B magnesium alloy plates and 2205 stainless steel plates interface to be combined is removed
Layer and impurity:Stainless steel and magnesium alloy interface to be combined are just polished using the angle grinder of installation grinding wheel, wire brush, then
It is polished with the sand paper of 600 mesh, so that surface roughness Ra to be combined is no more than 2 μm, then wipe clean face to be combined with dry wipe.
(3)The AZ31B magnesium alloy plates handled well and 2205 stainless steel plates are subjected to explosive welding:I.e. explosive welding is in soil property
It is carried out on ground, without other objects in the radius of 30 meters of periphery, the cushion rubber layer (2000 of 5mm thickness is placed on soil
MmX1600mmX5mm), cushion rubber layer is fixed with ground, and after buffer layer is used for reducing explosion generation, ground is upward in face of composite plate
Impact force;Base's AZ31B magnesium alloy plates are placed on cushion rubber layer, magnesia gap column is arranged on magnesium alloy plate,
Spacing between gap column is 100mm, and gap pillar height degree is 5mm, 2205 stainless steel plates is placed on the column of gap, with AZ31B magnesium
Alloy sheets are parallel;Layer coating butter on stainless steel, thickness 2mm, and in 2205 stainless steel plate edges all coating butters,
Brown paper medicine frame and butter are bonded, 2205 stainless steel plate edges are attached to;By expanded ammonium nitrate composite explosives with not equal thickness
It is layered on the butter on the upside of 2205 stainless steel plates, being laid with explosive thickness to explosion end from initiation ends gradually successively decreases, side of detonating
Explosive thickness is 27mm, explosion ending end explosive thickness 15mm;Explosive layer is seamlessly transitted from initiation ends to explosion end;Use side
Edge ignites method, detonator is inserted in detonating charge edge, detonator is inserted into detonating charge depth as 15mm, and 5 ~ 10mm around detonator
2 ~ 5mg hexogen is added in radius, detonator lead is more than 40 meters;A long way off, quick-fried using electromagnetic control apparatus detonating primer
Fried welding is completed;
(4)The 2205/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;Annealing
It is carried out in resistance heating case, annealing temperature is 200 DEG C, soaking time 60min;Heat treatment temperature is with 10 DEG C of speed liters per second
Temperature is to 200 DEG C, after heat preservation, composite plate furnace cooling;
(5)The non-soldering region in composite plate edge is cut with plate shearing machine(About 35mm), it is residual to clear up stainless steel upper surface side
The butter stayed obtains 2205/AZ31B composite plates.
(6)It detects a flaw to composite plate according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, result of detection
Show composite plate Percentage bound 99.8%;According to GB/T6369-2008, test compound board interface tensile-sbear strength, the tensile-sbear strength at interface
For 130.0Mpa, Surface scan analysis is carried out to tensile-shear crack interface, all magnesium of component of two planes of disruption illustrates to draw and cut
It splits and is happened at magnesium alloy position, rather than in joint location, it was demonstrated that explosive welding generation makes two kinds of materials of magnesium alloy and stainless steel
Material produces firm combination;Combination interface is observed using surface sweeping Electronic Speculum SEM, calmodulin binding domain CaM shows microwave shape, interface knot
Close it is intact, the defects of pore-free, crackle.Line surface sweeping analysis is done near interface using EDS, magnesium elements and ferro element expand
It dissipates, illustrates that two kinds of materials realize metallurgical binding by diffusion reaction.
Specific implementation mode two
(1)Select the base material of AZ31B magnesium alloy plates and 316L stainless steel plates as explosive welding;And to AZ31B magnesium alloys
Plate carries out annealing toughening, 300 DEG C of annealing temperature, soaking time 120min;
AZ31B magnesium alloy plates:950mmX550mmX8mm;
316L stainless steel plates:1000 mmX600mmX2mm;
(2)Using the method for mechanical grinding, the oxidation of AZ31B magnesium alloy plates and 316L stainless steel plates interface to be combined is removed
Layer and impurity:Stainless steel and magnesium alloy interface to be combined are just polished using the angle grinder of installation grinding wheel, wire brush, then
It is polished with the sand paper of 600 mesh, so that surface roughness Ra to be combined is no more than 2 μm, then wipe clean face to be combined with dry wipe.
(3)The AZ31B magnesium alloy plates handled well and 316L stainless steel plates are subjected to explosive welding:I.e. explosive welding is in soil property
It is carried out on ground, without other objects in the radius of 30 meters of periphery, the cushion rubber layer (2000 of 5mm thickness is placed on soil
MmX1600mmX5mm), cushion rubber layer is fixed with ground;Base's AZ31B magnesium alloy plates are placed on cushion rubber layer,
Magnesia gap column is arranged on magnesium alloy plate, the spacing between the column of gap is 100mm, and gap pillar height degree is 5mm, and 316L is stainless
Steel plate is placed on the column of gap, parallel with AZ31B magnesium alloy plates;Layer coating butter on stainless steel, thickness 2mm, and
Brown paper medicine frame and butter are bonded, are attached to 316L stainless steel plates surrounding by 316L stainless steel plates edge all coating butters
Edge;Expanded ammonium nitrate composite explosives are layered on not equal thickness on the butter on the upside of 316L stainless steel plates, are tied from initiation ends to explosion
Beam end is laid with explosive thickness and gradually successively decreases, and detonation side explosive thickness is 27mm, explosion ending end explosive thickness 15mm;Explosive layer from
Initiation ends are seamlessly transitted to explosion end;Method is ignited using edge, detonator is inserted in detonating charge edge, detonator is inserted into detonation
Explosive depth is 15mm, and adds 2 ~ 5mg hexogen in 5 ~ 10mm radius around detonator, and detonator lead is more than 40 meters;
A long way off, using electromagnetic control apparatus detonating primer, explosive welding is completed;
(4)316L/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;It moves back
Fire carries out in resistance heating case, and annealing temperature is 200 DEG C, soaking time 60min;Heat treatment temperature is with 10 DEG C of speed per second
200 DEG C, after heat preservation are warming up to, composite plate furnace cooling;
(5)The non-soldering region of composite plate surrounding is cut with plate shearing machine, the remaining butter of stainless steel upper surface side is cleared up, obtains
316L/AZ31B composite plates.
(6)It detects a flaw to composite plate according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, result of detection
Show composite plate Percentage bound 99.8%;According to GB/T6369-2008, test compound board interface tensile-sbear strength, the tensile-sbear strength at interface
For 120.0Mpa, Surface scan analysis is carried out to tensile-shear crack interface, all magnesium of component of two planes of disruption illustrates to draw and cut
It splits and is happened at magnesium alloy position, rather than in joint location, it was demonstrated that explosive welding generation makes two kinds of materials of magnesium alloy and stainless steel
Material produces firm combination;Combination interface is observed using surface sweeping Electronic Speculum SEM, calmodulin binding domain CaM shows microwave shape, interface knot
Close it is intact, the defects of pore-free, crackle.Line surface sweeping analysis is done near interface using EDS, magnesium elements and ferro element expand
It dissipates, illustrates that two kinds of materials realize metallurgical binding by diffusion reaction.
Specific implementation mode three
(1)Select the base material of AZ31B magnesium alloy plates and 304 stainless steel plates as explosive welding;And to AZ31B magnesium alloy plates
Carry out annealing toughening, 300 DEG C of annealing temperature, soaking time 120min;
AZ31B magnesium alloy plates: 750mmX700mmX8mm;
304 stainless steel plates:800 mmX750mmX3mm;
(2)Using the method for mechanical grinding, the oxidation of AZ31B magnesium alloy plates and 304 stainless steel plates interface to be combined is removed
Layer and impurity:Stainless steel and magnesium alloy interface to be combined are just polished using the angle grinder of installation grinding wheel, wire brush, then
It is polished with the sand paper of 600 mesh, so that surface roughness Ra to be combined is no more than 2 μm, then wipe clean face to be combined with dry wipe.
(3)The AZ31B magnesium alloy plates handled well and 304 stainless steel plates are subjected to explosive welding:I.e. explosive welding is in soil property
It is carried out on ground, without other objects in the radius of 30 meters of periphery, the cushion rubber layer (2000 of 5mm thickness is placed on soil
MmX1600mmX5mm), cushion rubber layer is fixed with ground;Base's AZ31B magnesium alloy plates are placed on cushion rubber layer,
Magnesia gap column is arranged on magnesium alloy plate, the spacing between the column of gap is 100mm, and gap pillar height degree is 5mm, by 304 stainless steels
Plate is placed on the column of gap, parallel with AZ31B magnesium alloy plates;Layer coating butter on stainless steel, thickness 2mm, and not 304
Become rusty steel plate edge coating butter, and brown paper medicine frame and butter are bonded, 304 stainless steel plate edges are attached to;It will be puffing
Ammonium nitrate composite explosives are layered on not equal thickness on the butter on the upside of 304 stainless steel plates, are laid with from initiation ends to explosion end fried
Drug thickness degree gradually successively decreases, and detonation side explosive thickness is 30mm, explosion ending end explosive thickness 20mm;Explosive layer is from initiation ends to quick-fried
Fried end seamlessly transits;Method is ignited using edge, detonator is inserted in detonating charge edge, detonator is inserted into detonating charge depth and is
20mm, and 2 ~ 5mg hexogen is added in 5 ~ 10mm radius around detonator, detonator lead is more than 40 meters;A long way off, it utilizes
Electromagnetic control apparatus detonating primer, explosive welding are completed;
(4)The 304/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;Annealing
It is carried out in resistance heating case, annealing temperature is 200 DEG C, soaking time 60min;Heat treatment temperature is with 10 DEG C of speed liters per second
Temperature is to 200 DEG C, after heat preservation, composite plate furnace cooling;
(5)The non-soldering region of composite plate surrounding is cut with plate shearing machine, the remaining butter of stainless steel upper surface side is cleared up, obtains
304/AZ31B composite plates.
(6)It detects a flaw to composite plate according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, result of detection
Show composite plate Percentage bound 99.8%;According to GB/T6369-2008, test compound board interface tensile-sbear strength, the tensile-sbear strength at interface
For 138.0Mpa, Surface scan analysis is carried out to tensile-shear crack interface, all magnesium of component of two planes of disruption illustrates to draw and cut
It splits and is happened at magnesium alloy position, rather than in joint location, it was demonstrated that explosive welding generation makes two kinds of materials of magnesium alloy and stainless steel
Material produces firm combination;Combination interface is observed using surface sweeping Electronic Speculum SEM, calmodulin binding domain CaM shows microwave shape, interface knot
Close it is intact, the defects of pore-free, crackle.Line surface sweeping analysis is done near interface using EDS, magnesium elements and ferro element expand
It dissipates, illustrates that two kinds of materials realize metallurgical binding by diffusion reaction.
Explanation:99.8% Surface bond rate of the present invention is the Percentage bound for removing edge and being not associated with behind region.
Gap column of the present invention is that a block length is 20mm, and the height of width=thin stainless steel substrates gap column is(1.5~
2.5)× stainless steel plate thickness, thickness are the rectangular sheets of 0.5mm, and several foldings are bent in the length direction of rectangular slab, curved
For song at curved edges shown in Fig. 4, bending angle is 100 ~ 120 degree;Curved edges are contacted with faying face.
Explanation:99.8% Surface bond rate of the present invention is the Percentage bound for removing edge and being not associated with behind region.
Claims (5)
1. a kind of explosion welding method of stainless steel magnesium alloy composite board is cladding using stainless steel, magnesium alloy is base, is used
Expanded ammonium nitrate composite explosives are as the explosion energy;
Explosive welding includes the following steps:
(1)Select magnesium alloy plate and stainless steel plate as the base material of explosive welding;And annealing toughening is carried out to magnesium alloy plate;
(2)It polishes magnesium alloy plate and stainless steel plate interface to be combined;
(3)Cushion rubber layer is padded below magnesium alloy plate, arranges gap column on magnesium alloy plate, the height of gap column=(1.5~
2.5)× stainless steel plate thickness, the spacing between the column of gap is 100mm, and in gap, stainless steel plate, stainless steel plate is placed above in column
Apply butter above, uniform thickness is not laid with one layer of explosive above butter, and initiation ends explosive thickness is more than explosion end explosive thickness, fries
Medicine layer is seamlessly transitted from initiation ends to explosion end;
(4)Detonator is inserted into explosive layer, be inserted into explosive layer cap length be more than initiation ends explosive thickness half, and
2 ~ 5mg hexogen is added around detonator in 5 ~ 10mm radius;
(5)Detonator lead is more than 40 meters, and using electromagnetic control apparatus detonating primer, explosive welding is completed.
2. a kind of explosion welding method of stainless steel magnesium alloy composite board according to claim 1, it is characterised in that:It is described
Gap column is that a block length is 20mm, and width is(1.5~2.5)× stainless steel plate thickness, thickness are that the rectangle of 0.5mm is stainless
Steel thin slice is bent several foldings in the length direction of rectangle stainless steel thin slice, and bending angle is 100 ~ 120 degree.
3. a kind of explosion welding method of stainless steel magnesium alloy composite board according to claim 1, it is characterised in that:Explosion
Welding includes the following steps:
(1)Select 1000mmX600mmX3mm AZ31B magnesium alloy plates and 1050 mmX650mmX2mm, 2205 stainless steel plates as
The base material of explosive welding;And annealing toughening, 300 DEG C of annealing temperature, soaking time 120min are carried out to AZ31B magnesium alloy plates;
(2)AZ31B magnesium alloy plates and 2205 stainless steel plates interface to be combined are just polished with angle grinder, then with the sand of 600 mesh
Paper is polished, and so that surface roughness Ra to be combined is no more than 2 μm, is then wiped clean face to be combined with dry wipe;
(3)By the AZ31B magnesium alloy plates and 2205 stainless steel plates progress explosive welding after polishing:Explosive welding is enterprising in soil
Row, 30 meters of periphery radius is interior without other objects, and the cushion rubber layer of 5mm thickness, cushion rubber layer and ground are placed on soil
It is fixed;AZ31B magnesium alloy plates are placed on cushion rubber layer, the arrangement gap column on AZ31B magnesium alloy plates, between the column of gap
Spacing be 100mm, gap pillar height degree is 5mm;2205 stainless steel plates are placed on the column of gap, 2205 stainless steel plates with
AZ31B magnesium alloy plates are parallel;Layer coating butter on stainless steel, thickness 2mm, and 2205 stainless steel plate edges all
Brown paper medicine frame and butter are bonded, are attached to 2205 stainless steel plate edges by coating butter;By expanded ammonium nitrate composite explosives with
Equal thickness is not layered on above butter, and being laid with explosive thickness to explosion end from initiation ends gradually successively decreases, initiation ends explosive thickness
For 27mm, explosion end explosive thickness 15mm;Explosive layer is seamlessly transitted from initiation ends to explosion end;Detonator has been inserted in
Bursting charge edge, it is 15mm that detonator, which is inserted into detonating charge depth, and 2 ~ 5mg of addition is black in 5 ~ 10mm radius around detonator
Suo Jin, detonator lead are more than 40 meters;A long way off, using electromagnetic control apparatus detonating primer, explosive welding is completed;
(4)The 2205/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;Annealing temperature
It is 200 DEG C, soaking time 60min;Heating rate of annealing is 10 DEG C per second, after heat preservation, composite plate furnace cooling;
(5)The non-soldering region of composite plate surrounding is cut with plate shearing machine, the remaining butter of stainless steel upper surface side is cleared up, obtains
2205/AZ31B composite plates;
(6)It detects a flaw to composite plate according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, composite plate Percentage bound
99.8%;Tensile-sbear strength according to GB/T6369-2008, test compound board interface tensile-sbear strength, interface is 130.0Mpa;To drawing
Shear fracture interface carries out Surface scan analysis, and all magnesium of component of two planes of disruption illustrates that tensile-shear crack is happened at magnesium alloy
Position, it was demonstrated that explosive welding makes two kinds of materials of magnesium alloy and stainless steel produce firm combination;It is seen using surface sweeping Electronic Speculum SEM
Combination interface is examined, calmodulin binding domain CaM shows microwave shape, does line surface sweeping analysis, magnesium elements and iron member near interface using EDS
Element is spread.
4. a kind of explosion welding method of stainless steel magnesium alloy composite board according to claim 1, it is characterised in that:Explosion
Welding includes the following steps:
(1)Select the 316L stainless steel plates of the AZ31B magnesium alloy plates and 1000 mmX600mmX2mm of 950mmX550mmX8mm
Base material as explosive welding;And annealing toughening, 300 DEG C of annealing temperature, soaking time are carried out to AZ31B magnesium alloy plates
120min;
(2)316L stainless steel plates and AZ31B magnesium alloy plates interface to be combined are just polished using angle grinder, then with 600 purposes
Sand paper is polished, and so that surface roughness Ra to be combined is no more than 2 μm, is then wiped clean face to be combined with dry wipe;
(3)The cushion rubber layer of 2000 mmX1600mmX5mm is placed on soil, cushion rubber layer is fixed with ground;By base
AZ31B magnesium alloy plates are placed on cushion rubber layer, arrange that magnesia gap column, the spacing between the column of gap are on magnesium alloy plate
100mm, gap pillar height degree are 5mm;
(4)316L stainless steel plates are placed on the column of gap, it is parallel with AZ31B magnesium alloy plates;In 316L stainless steels upper surface and
Surrounding smearing thickness is the butter of 2mm;Brown paper medicine frame is pasted onto 316L stainless steel plates surrounding by butter;
(5)Above the butter that expanded ammonium nitrate composite explosives are layered on not equal thickness above 316L stainless steel plates, from initiation ends to
Explosion end is laid with explosive thickness and gradually successively decreases, and initiation ends explosive thickness is 27mm, explosion end explosive thickness 15mm;It is fried
Medicine layer is seamlessly transitted from initiation ends to explosion end;
(6)Detonator is inserted in detonating charge edge, detonator is inserted into detonating charge depth as 15mm, and 5 ~ 10mm half around detonator
2 ~ 5mg hexogen is added within the scope of diameter, detonator lead is more than 40 meters;
(7)A long way off, using electromagnetic control apparatus detonating primer, explosive welding is completed, and 316L/AZ31B composite plates are obtained;
(8)316L/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;Annealing heat
It is 10 DEG C per second to handle heating rate, and annealing heat-treats temperature is 200 DEG C, soaking time 60min;It is compound after heat preservation
Plate furnace cooling;
(9)It detects a flaw to 316L/AZ31B composite plates according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, it is multiple
Plywood Percentage bound is 99.8%;According to GB/T6369-2008, the compound board interface tensile-sbear strengths of 316L/AZ31B are tested, interface
Tensile-sbear strength is 120.0Mpa;Surface scan analysis, all magnesium of component of two planes of disruption are carried out to tensile-shear crack interface;Profit
Combination interface is observed with surface sweeping Electronic Speculum SEM, calmodulin binding domain CaM shows microwave shape.
5. a kind of explosion welding method of stainless steel magnesium alloy composite board according to claim 1, it is characterised in that:Explosion
Welding includes the following steps:
(1)304 stainless steel plates of the AZ31B magnesium alloy plates and 800 mmX750mmX3mm that select 750mmX700mmX8mm are made
For the base material of explosive welding;And annealing toughening, 300 DEG C of annealing temperature, soaking time 120min are carried out to AZ31B magnesium alloy plates;
(2)304 stainless steel plates and AZ31B magnesium alloy plates interface to be combined are just polished using angle grinder, then with the sand of 600 mesh
Paper is polished, and so that surface roughness Ra to be combined is no more than 2 μm, is then wiped clean face to be combined with dry wipe;
(3)The cushion rubber layer of 2000 mmX1600mmX5mm is placed on soil, cushion rubber layer is fixed with ground;By base
AZ31B magnesium alloy plates are placed on cushion rubber layer, arrange that magnesia gap column, the spacing between the column of gap are on magnesium alloy plate
100mm, gap pillar height degree are 5mm;
(4)304 stainless steel plates are placed on the column of gap, it is parallel with AZ31B magnesium alloy plates;In 304 stainless steel upper surfaces and four
Periphery smearing thickness is the butter of 2mm;Brown paper medicine frame is pasted onto 304 stainless steel plate surroundings by butter;
(5)Above the butter that expanded ammonium nitrate composite explosives are layered on not equal thickness above 304 stainless steel plates, from initiation ends to quick-fried
Fried end is laid with explosive thickness and gradually successively decreases, and initiation ends explosive thickness is 30mm, explosion end explosive thickness 20mm;Explosive
Layer is seamlessly transitted from initiation ends to explosion end;
(6)Detonator is inserted in detonating charge edge, detonator is inserted into detonating charge depth as 20mm, and 5 ~ 10mm half around detonator
2 ~ 5mg hexogen is added within the scope of diameter, detonator lead is more than 40 meters;
(7)A long way off, using electromagnetic control apparatus detonating primer, explosive welding is completed, and 304/AZ31B composite plates are obtained;
(8)304/AZ31B composite plates of explosion synthesis are subjected to annealing heat-treats, are then smoothed on level(l)ing machine;At annealing heat
It is 10 DEG C per second to manage heating rate, and annealing heat-treats temperature is 200 DEG C, soaking time 60min;After heat preservation, composite plate
Furnace cooling;
(9)It detects a flaw to 304/AZ31B composite plates according to the requirement of GB/T 7734-2015 composite plate ultrasonic inspections, it is compound
Plate Percentage bound is 99.8%;According to GB/T6369-2008, the compound board interface tensile-sbear strengths of 304/AZ31B are tested, the drawing at interface is cut
Intensity is 138.0Mpa;Surface scan analysis, all magnesium of component of two planes of disruption are carried out to tensile-shear crack interface;Using sweeping
Face Electronic Speculum SEM observes combination interface, and calmodulin binding domain CaM shows microwave shape.
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CN109249121B (en) * | 2018-11-02 | 2021-10-26 | 南京昭邦金属复合材料有限公司 | Explosive welding method for large-breadth tool steel-steel composite plate |
CN109622967B (en) * | 2019-02-01 | 2021-03-12 | 上海交通大学 | Method for manufacturing stainless steel-magnesium interlocking bimetal complex-shaped part in additive manufacturing mode |
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