47 results about "Explosion welding" patented technology

The application relates to the technical field of image recognition, and discloses a method for detecting explosion welding defects of plated aluminum-zinc-silicon coil plates based on X-ray images. The method acquires an X-ray image sequence of an explosion welding interface of a plated aluminum-zinc-silicon coil plate and inputs the sequence into a physical constraint feature decoupling network, the network comprising a feature extraction backbone, a physical attenuation constraint branch and a defect identification branch. The physical attenuation constraint branch calculates a physical reconstruction loss of a multi-scale space feature map according to an X-ray mass attenuation coefficient matrix of the plated aluminum-zinc-silicon alloy, and reversely propagates the loss to the feature extraction backbone as a regularization term, so as to forcibly separate speckle background features conforming to the physical attenuation law. The application makes the feature decoupling comply with the physical attenuation law, eliminates the interference of speckle artifacts on micro-defect judgment, and avoids missed detection caused by micro-defects being covered by speckles.

The invention belongs to the technical field of metal explosive cladding manufacturing, and discloses an explosive welding initiating explosive forming mold, an initiating explosive column and an explosive welding method. The mold comprises a pipe body and a cone assembled in the pipe body. The top end of the cone is upward, and a gap is reserved between the bottom face of the cone and the lower end face of the tube body, so that an upper columnar charging cavity and a lower conical energy gathering cavity are formed in the tube body. By means of the simple split design, traditional manual explosive pit digging operation is converted into a standardized process, the energy-gathered initiating explosive column with the highly-consistent shape, size and explosive loading amount is prepared, personal errors are thoroughly eliminated, and repeatability of initiation energy is guaranteed. And meanwhile, the bottom energy gathering cavity structure is beneficial to improving the energy utilization rate, and is particularly suitable for explosive welding of the multi-layer metal plate with the medium thickness. The device has the remarkable technical advantages of simple structure, low cost, time-saving operation, safety, high efficiency, batch production and the like.

The invention discloses a preparation method of a bamboo-imitating modulation structure metal composite board, and belongs to the technical field of composite material preparation, and the method comprises the following steps: by taking one or more metal boards with adjustable hardness difference as raw materials, sequentially overlapping at least three layers according to design requirements through explosive welding, carrying out heat treatment according to requirements to regulate and control the hardness difference of each layer, and carrying out heat treatment to obtain the bamboo-imitating modulation structure metal composite board. Cold deformation or thermal deformation is conducted firstly, then heat treatment is conducted, the layer thickness and proportion and element, structure and hardness distribution characteristics of all layers are regulated and controlled, and the bamboo-imitating modulation structure metal composite plate is obtained. The main heterogeneous characteristics of the composite material prepared by the method imitate a staggered structure formed by hard thick-walled cells and soft parenchyma cells in bamboos, postweld treatment can be performed according to the thickness and the proportion of the thickness required by structure property coupling enhancement so as to perform controllable adjustment, and meanwhile, the heterogeneous characteristics such as components and structures can be designed; and higher-level strength and plasticity synergy can be realized.

The invention discloses a self-repairing heat dissipation wheel based on a double-response intelligent material and a preparation process thereof, the wheel adopts a three-layer gradient composite structure and a double-trigger control system, and the three-layer structure comprises a self-repairing layer, a transition interface layer and a heat dissipation layer from outside to inside; the surface of the self-repairing layer is provided with a diamond dot matrix, and the inner side of the self-repairing layer is provided with a heating sheet; the transition interface layer is formed by explosive welding of titanium and aluminum; the heat dissipation layer comprises an aluminum alloy base body, a composite phase change material, a directional heat dissipation micro-channel, heat dissipation fins and a micro electromagnetic valve. The double-trigger system comprises a sensing module, a control module and a power supply module. The preparation technology comprises the steps of alloy preparation, explosive welding, heat dissipation structure machining, vacuum diffusion welding, phase change material vacuum infusion, function integration and the like. Micro-damage self-repairing and efficient heat dissipation are achieved, it is guaranteed that the structure is stable and matched with working conditions, the service life of wheels is prolonged, driving safety is improved, and light weight and high strength are both considered.

A heat exchanger for use in a urea production system may include a first chamber, a second chamber adjacent to the first chamber, a first tubesheet provided between the first chamber and the second chamber, a first plurality of holes provided in the tubesheet, and a plurality of tubes in fluid communication with the first chamber and extending through the second chamber. The second chamber may be sealed from the first chamber. The first tubesheet may include a first base layer and a first clad layer explosively welded to the first base layer. The first base layer may include a first carbon steel. The first clad layer may include a stainless steel alloy, a austenitic stainless steel, a superaustenitic stainless steel, a duplex stainless steel, or a superduplex steel stainless steel. The heat exchanger may be configured for use in at least one step in a urea production process.

The combined type high-strength end socket comprises an end socket body, an outer edge plate is arranged on the outer side of the opening end of the end socket body, and an annular groove is formed in the inner side of the opening end of the end socket body; a reinforcing plate assembly is embedded in the end socket body. The reinforcing plate assembly comprises a base layer, a reinforcing layer and a functional layer which are sequentially compounded from inside to outside. The base layer serves as a supporting structure, the reinforcing layer serves as a weight reduction reinforcing structure, and the functional layer is corrosion-resistant; the base layer, the reinforcing layer and the functional layer are compositely molded through explosive welding; after the reinforcing plate assembly is connected with the end socket body, the surface of the opening end and the surface of the annular groove are located on the same horizontal plane. A locking ring in threaded connection with the end socket body is arranged on the annular groove and is used for limiting the degree of freedom of axial movement of the reinforcing plate assembly relative to the end socket body. The sealing head is simple in structure, reasonable in design, low in cost and high in efficiency, a multi-layer nesting assembly procedure is omitted, and the overall gravity of the sealing head is reduced while the strength of the sealing head is improved.

The invention discloses a 4J29 kovar alloy / 304 stainless steel composite plate and a preparation method thereof, and belongs to the technical field of metal composite plate production, a 4J29 kovar alloy plate and a 304 stainless steel plate in a cold rolling state are respectively subjected to recrystallization annealing treatment to obtain a soft 4J29 kovar alloy plate and a soft 304 stainless steel plate, then the soft 304 stainless steel plate is used as a base plate, and the 4J29 kovar alloy plate and the soft 304 stainless steel plate are subjected to heat treatment to obtain the 4J29 kovar alloy / 304 stainless steel composite plate. A soft 4J29 kovar alloy plate serves as a compound plate, the surface of the soft 4J29 kovar alloy plate is coated with a layer of water glass to serve as a protective layer, then an explosive layer is laid on the surface of the protective layer in a gradient explosive distribution mode, then explosive cladding is conducted, the composite plate is obtained, a bonding area of the composite plate has the uniform and continuous microwave shape characteristic, the interface bonding rate is larger than or equal to 98.9%, and the bonding strength is larger than 360 MPa. The explosive welding composite board with excellent performance is prepared, and corresponding technical conditions meet industrial production requirements.

The invention discloses a preparation method of a composite target inlaid with a non-metallic material and the composite target, and relates to the technical field of physical vapor deposition coating target materials, the preparation method comprises the following steps: a titanium plate and a copper plate are subjected to explosive welding to form a base material, and a plurality of blind holes are formed in the surface of the titanium plate of the base material; processing a to-be-inlaid non-metallic material into a shape matched with the blind hole; coating conductive silver adhesive in the plurality of blind holes, and placing the to-be-inlaid non-metallic material in the plurality of blind holes to obtain a to-be-cured composite target material; and the to-be-cured composite target material is put into a vacuum curing furnace to be subjected to stepped heating, heat preservation and curing treatment, and the target composite target material is obtained. The technical problems of poor conductivity and target explosion of the target material in the prior art are relieved.

A heat exchanger for use in a urea production system may include a first chamber, a second chamber adjacent to the first chamber, a first tubesheet provided between the first chamber and the second chamber, a first plurality of holes provided in the tubesheet, and a plurality of tubes in fluid communication with the first chamber and extending through the second chamber. The second chamber may be sealed from the first chamber. The first tubesheet may include a first base layer and a first clad layer explosively welded to the first base layer. The first base layer may include a first carbon steel. The first clad layer may include a stainless steel alloy, a austenitic stainless steel, a superaustenitic stainless steel, a duplex stainless steel, or a super-duplex steel stainless steel. The heat exchanger may be configured for use in at least one step in a urea production process.

The invention relates to an explosive welding preparation method of a high-strength steel / high-toughness steel layered composite material, and belongs to the technical field of metal layered composite materials. The maraging steel and the austenitic stainless steel which are subjected to solution treatment are subjected to explosive welding and aging treatment to obtain the composite material with matched strength and toughness. The maraging steel obtains a supersaturated low-carbon lath martensite structure through solution treatment, the hardness is low and the plasticity is good in the state, and a good bonding interface can be formed during explosive welding; aging treatment is integrally carried out after welding, so that nanoscale intermetallic compounds are separated out from martensite phases, the strength and toughness of a welded plate are remarkably improved, meanwhile, embrittlement of a welding heat affected zone is avoided, and overall toughness synergy of the composite material is achieved.

The invention belongs to the technical field of explosive welding metal composite plate production and manufacturing, and provides a Q490DRL1 explosive welding composite plate for a low-temperature storage tank and a preparation method of the Q490DRL1 explosive welding composite plate. The preparation method comprises the following steps: respectively pre-treating a substrate Q490DRL1 and clad plate stainless steel to obtain a pre-treated substrate and a pre-treated clad plate; the pretreated base plate is placed on a blasting bed, a pretreated covering plate is installed after a supporting piece is placed on the pretreated base plate, explosive welding is conducted after explosive is laid on the pretreated covering plate, and an explosive welding composite system is obtained; the supporting sheet is a W-shaped supporting sheet; and the explosive welding composite system is subjected to heat treatment, and the Q490DRL1 explosive welding composite board for the low-temperature storage tank is obtained. According to the Q490DRL1 explosive welding composite plate for the low-temperature storage tank, the dilemma that high strength and low-temperature toughness of a traditional material are difficult to consider at the same time is broken through, and excellent toughness can still be kept in a low-temperature environment while high strength is guaranteed.

The utility model provides a welding structure for explosive welding of a large-breadth composite tube plate, and relates to the technical field of explosive welding of metal composite plates. The lining plate is embedded in the blasting bed, and the upper surface of the lining plate is provided with a lining plate bearing surface; the lining plate bearing surface and the blasting bed bearing surface are coplanar and form a composite supporting surface together, and the composite supporting surface is used for supporting a base plate; the bottom of the foot pad is provided with a substrate abutting face used for abutting against the to-be-welded face of the substrate, and the top of the foot pad is provided with a covering plate supporting face used for supporting the covering plate. The explosive layer is arranged at the top of the covering plate, an exploder used for detonating is arranged in the explosive layer, the exploder is aligned with the geometric center of the covering plate, and the vertical projection of the exploder in the welding direction is overlapped with the lining plate; through a composite supporting surface formed by the lining plate pre-buried in the blasting bed and the blasting bed, the partition bearing of the blasting impact force is realized, and the deformation of the plate during the explosive welding of the large-breadth composite tube plate is reduced.

The invention discloses a coating process for improving the surface quality of an explosive welding metal composite plate, belongs to the technical field of metal composite material surface treatment, and solves the problems that in the prior art, the interface bonding force between a coating and a metal substrate is insufficient, so that peeling and cracking are easily caused, and the corrosion resistance and the mechanical property are poor. According to the process, the surface of a metal composite plate subjected to explosive welding is pretreated, a special coating agent and a curing agent are mixed according to a specific weight ratio to form a uniform composition, the surface of the plate is coated with the uniform composition, and a coating is formed through curing; the coating agent comprises epoxy resin, phosphorus-fluorine-boron miscellaneous ester, benzyl glycidyl ether, superfine mica powder, nano silicon dioxide, zinc phosphate and a plurality of auxiliaries and solvents, the phosphorus-fluorine-boron miscellaneous ester serves as a key component, interface adhesion can be enhanced through chemical bonding, corrosive media are blocked, and durability, hardness, wear resistance and impact resistance of a coating are improved; therefore, the surface quality and the service life of the composite board are obviously improved.

The invention provides an aluminum steel structure transition joint, a butt joint and a welding method of the aluminum steel structure transition joint. The welding method of the aluminum steel structure transition joint comprises the following steps that to-be-welded faces of a to-be-welded composite layer, a to-be-welded middle layer and a to-be-welded base layer are ground and polished; the composite layer is an aluminum alloy plate, the middle layer is an aluminum-manganese series aluminum alloy plate, and the base layer is a steel plate; the treated base layer and the treated middle layer are subjected to first-time explosive welding, and the aluminum alloy-steel composite plate is obtained; the aluminum alloy-steel composite plate is subjected to leveling and surface polishing treatment; and the aluminum alloy surface and the composite layer in the obtained aluminum alloy-steel composite plate are subjected to secondary explosive welding, and the welded composite plate is machined into the transition joint. According to the method, an aluminum-manganese series aluminum alloy plate serves as a middle layer, a composite plate is obtained through layered two-time explosive welding, a transition joint is prepared through a cold machining method, joint butt joint is achieved in combination with electromagnetic pulse welding, and transition connection between dissimilar metal aluminum alloy and steel is achieved.

This invention belongs to the field of composite pipe welding and manufacturing technology, specifically relating to a method for directly welding bimetallic composite plates to prepare composite pipes, the composite pipes themselves, and their applications. The method includes the following steps: 1) preparing a metallurgically bonded bimetallic composite plate using an explosive welding-rolling composite method; 2) milling a platform structure into the stainless steel cladding layer to ensure the exposure of the carbon steel base layer; subsequently, processing a bevel at the welding edge of the bimetallic composite plate, with a bevel angle of 30~80°; 3) cold-pressing the flat bimetallic composite plate into a circular tube shape, forming a weld gap at the welding edge; 4) performing transition layer welding, cladding layer welding, and base layer welding respectively; 5) performing solution treatment on the welded composite pipe to obtain the composite pipe. This invention can effectively improve the uniformity of mechanical properties between the weld zone and the base material zone and eliminate structural safety hazards, effectively ensuring that the overall service life of the composite pipe is more than doubled compared to existing technologies.

The present application belongs to the technical field of explosive welding, especially a metal composite plate explosive welding device, comprising a base, a clamping mechanism, a explosive placement system, a multi-sensor array and a control unit. The clamping mechanism adopts a heavy frame structure, and the hydraulic locking cylinder is used to firmly fix the periphery of the base plate and the composite plate during the welding process, and the initial installation distance between the two is accurately controlled. The control method establishes a unified physical reference for the welding process, collects explosive pressure, temperature and vibration data in real time, calculates the welding quality index and deviation, compares the weighted warning coefficient with the threshold value to generate adjustment instructions, and adjusts the explosive quantity and detonation parameters adaptively. The present application solves the problems of inaccurate parameter control and unstable welding quality in existing explosive welding, and ensures the bonding strength and consistency of the welding interface through intelligent feedback control.

The invention discloses a tin-phosphor bronze / Q235B composite sheet and a preparation method thereof, and belongs to the field of metal material forming. According to the method, an optimized process route of explosive cladding, stepped annealing, hot rolling and cold rolling is adopted, a tin-phosphor bronze plate and a Q235B steel plate are metallurgically bonded through an explosive welding composite method, a composite thick plate is obtained, then stepped annealing heat treatment is conducted, hot rolling is conducted after preheating, and finally the composite thin plate is obtained through cold rolling. The method breaks through the limitation of a single composite technology, has the characteristics of high efficiency, stability and low production cost, and can be used for preparing the composite thin plate with excellent performance. According to the prepared tin-phosphor bronze / Q235B composite thin plate, the yield strength at the room temperature reaches 580-640 MPa, the tensile strength reaches 660-700 MPa, and the percentage elongation after fracture is 5%-6.5%.

This invention discloses a tin-phosphorus bronze / Q235B composite thin plate and its preparation method, belonging to the field of metal material forming. The method employs an optimized process route of "explosive bonding—stepped annealing—hot rolling—cold rolling." Explosive welding is used to metallurgically bond tin-phosphorus bronze plates with Q235B steel plates to obtain a composite thick plate. This is followed by stepped annealing heat treatment, preheating, and hot rolling, and finally cold rolling to obtain the composite thin plate. This method overcomes the limitations of single-component technologies, featuring high efficiency, stability, and low production cost, and can produce composite thin plates with excellent performance. The prepared tin-phosphorus bronze / Q235B composite thin plate has a room temperature yield strength of 580~640MPa, a tensile strength of 660~700MPa, and an elongation after fracture of 5%~6.5%.

The invention discloses an explosive welding method for a five-layer composite plate based on stainless steel-titanium-aluminum, which comprises the following steps: by taking a 316L stainless steel plate I, a TA2 titanium alloy plate I, a 1060 aluminum alloy plate, a TA2 titanium alloy plate II and a 316L stainless steel plate II as raw materials, carrying out laser positioning under the auxiliary cooperation of a movable baffle plate assembly, a laser emitting device and a positioning block device; the five-layer composite board is prepared through multiple different explosive cladding modes, and the bonding strength and the overall fitting rate of the two ends of the composite board are remarkably improved; the four movable baffle assemblies which are installed in the explosion buffering area on the outer side of the explosion core area and form an annular shape in a surrounding mode are used for blocking the supporting blocks flying in the explosion process, the supporting blocks can be conveniently recycled in the later period, and safety and reliability are achieved; whether positioning of the base plate or the compound plate is deviated or not and whether installation is inclined or not can be visually judged through laser positioning, so that adaptive adjustment is carried out, and the method is simple, efficient, good in reliability and time-saving and labor-saving.

The utility model discloses a kind of high-strength high-conductivity steel-aluminum composite plate explosive welding block, it relates to explosive welding block technical field, including steel plate and aluminum plate, steel plate is located at the bottom of aluminum plate, the four corners of steel plate and the four corners of aluminum plate are all set with round angle, the upper surface of steel plate is set with multiple micron-level grooves, explosive welding connection between steel plate and aluminum plate;The bottom of steel plate is provided with buffer support plate.A kind of high-strength high-conductivity steel-aluminum composite plate explosive welding block of the utility model, by setting the several micron-level grooves of steel plate upper surface, in the fusion welding of steel plate and aluminum plate, the welding surface molten metal of aluminum plate can be infiltrated into several micron-level grooves, increase the "occlusal" force, improve welding strength, the multiple wave-shaped protrusions of aluminum plate lower surface, in explosion, can be inserted into steel plate upper surface, can form "mechanical lock catch" structure, increase interface friction, improve welding strength.

The present application relates to the field of metal composite plate explosion welding, and provides a sample, a tool and a method for Z-direction fatigue test of an explosion composite joint, the sample comprising at least a top layer and a bottom layer, and the sample comprising at least one interface, the sample comprising: a circumferential boss part composed of an upper part of the top layer; a central column part arranged below the circumferential boss part, the central column part comprising at least a lower part of the top layer and the bottom layer; a tapered transition part arranged between the circumferential boss part and the central column part; an upper central through hole opened downward from the top of the sample and extending to below the interface to be tested by more than 1mm; and a lower central through hole in communication with the upper central through hole. The sample for Z-direction fatigue test of the explosion composite joint, one, controls the fatigue failure surface at the interface, and realizes accurate determination of the Z-direction fatigue performance of the explosion composite joint; two, does not easily cause interface fracture during installation; and three, can satisfy tensile-tensile fatigue, tensile-compressive fatigue and compressive-compressive fatigue tests.

The invention discloses a method for efficient and energy-saving explosive welding of an ultrathin layered metal plate, and relates to the technical field of explosive welding. S2, carrying out isolation treatment; according to the method, welding of the two sets of base plates and the compound plates is achieved through one-time explosion, and compared with a traditional mode that one plate is composited through one-time explosion, the production efficiency is improved. The specific gap height between the base plate and the compound plate is arranged, under the action of energy generated by explosive explosion, good metallurgical bonding is formed between the compound plate and the base plate, the high-quality composite welded plate is obtained, and related performance requirements are met, for example, the bonding strength can reach 300 MPa, the bonding rate can reach 99%, and the flatness can reach 2 mm / m.

The present application relates to a kind of ship aluminum copper composite laminar flow plate manufacturing method, belong to plate welding technical field, solve the situation in complex surface structure, or already formed large or precision equipment is not suitable for directly carrying out explosive welding or hot-pressing composite preparation heterogeneous metal structural component, technical problem of obtaining aluminum copper composite laminar flow plate on equipment surface when complex surface structure, or already formed large or precision equipment is not suitable for directly carrying out explosive welding or hot-pressing composite preparation heterogeneous metal structural component.A kind of ship aluminum copper composite laminar flow plate manufacturing method includes: step 1, aluminum plate-copper pipe array-aluminum plate combination is formed aluminum copper composite laminar flow plate intermediate structural component using explosive welding method, wherein one aluminum plate is intermediate structure layer;Step 2, the intermediate structure layer side of aluminum copper composite laminar flow plate intermediate structural component and ship matrix one side are adhered and welded using laser or electron beam welding, from the other side of the ship matrix opposite the ship matrix one side, and the aluminum copper composite laminar flow plate is made.The present application is at least reached 90% above the conventional aluminum-aluminum penetration welding bonding strength of the bonding strength.

The application discloses a 4J29 Kovar alloy / 304 stainless steel composite plate and a preparation method thereof, and belongs to the technical field of metal composite plate production. Cold-rolled 4J29 Kovar alloy plates and 304 stainless steel plates are respectively subjected to recrystallization annealing treatment to obtain soft 4J29 Kovar alloy plates and soft 304 stainless steel plates, then the soft 304 stainless steel plates are used as base plates, the soft 4J29 Kovar alloy plates are used as composite plates, a layer of water glass is applied on the surface of the soft 4J29 Kovar alloy plates as a protective layer, then an explosive layer is laid on the surface of the protective layer by using a gradient drug laying mode, and then explosion compounding is carried out to obtain the composite plate, the bonding area of the composite plate presents a uniform and continuous micro-wave shape feature, the interface bonding rate is greater than or equal to 98.9%, and the bonding strength is greater than 360 MPa. The application prepares an explosion-welded composite plate with excellent performance, and the corresponding technical conditions meet the requirements of industrial production.

The utility model provides an energy -conserving structure section steel claw belongs to aluminium smelting technical field. Energy -consaving structure section steel claw includes guide rod, crossbeam and branch leg. The material of guide rod is configured as aluminium. Crossbeam includes first combination layer and second combination layer, the material of first combination layer is configured as aluminium, the material of second combination layer is configured as steel, first combination layer and second combination layer mutually close surface explosive welding, guide rod is welded with first combination layer, and the both ends of crossbeam along the length direction of itself have the groove, and the groove is set to one side of crossbeam close to guide rod. The one end of branch leg along the length direction of itself is welded with second combination layer, and the number of branch leg is multiple, and multiple branch legs are arranged along the length direction of crossbeam, and the one end of branch leg away from crossbeam is inserted in anode carbon block, and the material of branch leg is configured as steel. The energy -conserving structure section steel claw of the utility model can reduce the resistivity of steel claw, improve the even degree of current distribution in steel claw and improve the structural stability of steel claw.

The application discloses an explosion welding parameter optimization method for improving interface bonding strength of aluminum-steel composite plates, belongs to the technical field of metal composite explosion welding, and aims to solve the problems of low bonding strength and poor stability of traditional aluminum-steel explosion welding due to the fact that brittle intermetallic compounds are easily generated at the interface. The core of the method is to innovatively pretreat the surfaces to be combined of the aluminum plate and the steel plate, and the key innovation is to introduce germanium silicate lithium as a reactive modifier. The pretreatment layer can effectively purify the interface and promote atomic diffusion under the instantaneous high temperature and high pressure of explosion welding, so that the formation of brittle phases is significantly inhibited, and metallurgical bonding with high strength and high stability is realized. The application improves the interface bonding strength, process stability and long-term service performance of the composite plate from the root of interface modification.

The application provides an aluminum-steel structure transition joint, a butt joint and a welding method thereof. The welding method of the aluminum-steel structure transition joint comprises the following steps: polishing and polishing the to-be-welded surfaces of a complex layer, an intermediate layer and a base layer to be welded respectively; the complex layer is an aluminum alloy plate, the intermediate layer is an aluminum-manganese aluminum alloy plate, and the base layer is a steel plate; the treated base layer and intermediate layer are subjected to first explosive welding to obtain an aluminum alloy-steel composite plate; the aluminum alloy-steel composite plate is subjected to leveling and surface polishing treatment; the aluminum alloy surface of the obtained aluminum alloy-steel composite plate and the complex layer are subjected to second explosive welding, and the welded composite plate is processed into a transition joint. The aluminum-manganese aluminum alloy plate is used as the intermediate layer, the composite plate is obtained through layered two-time explosive welding, the transition joint is prepared through cold working, the joint butt joint is realized through electromagnetic pulse welding, and the transition connection between the dissimilar metals of the aluminum alloy and the steel is realized.

The invention belongs to the technical field of explosive welding, and particularly relates to a metal composite plate explosive welding device which comprises a base, a clamping mechanism, an explosive placing system, a multi-sensor array and a control unit. The clamping mechanism is of a heavy frame structure, the peripheries of the base plate and the compound plate are firmly fixed all the time through a hydraulic locking cylinder in the welding process, and the initial installation distance between the base plate and the compound plate is accurately controlled. The control method comprises the steps of establishing a unified physical reference in the welding process, collecting explosion pressure, temperature and vibration data in real time, calculating a welding quality index and a deviation value, generating an adjusting instruction based on comparison of a weighted reminding coefficient and a threshold value, and adaptively adjusting the explosive amount and detonation parameters. According to the method, the problems of inaccurate parameter control and unstable welding quality in existing explosive welding are solved, and the bonding strength and consistency of a welding interface are ensured through intelligent feedback control.

Provided is a method of connecting an austenitic steel pipe with a ferritic steel pipe. The method comprises providing the austenitic steel pipe and the ferritic steel pipe, such that an inner end section of the austenitic steel pipe has an outer diameter smaller than an inner diameter of an outer section of the ferritic steel pipe, inserting the inner end section into the outer end section, such that the inner and outer end sections overlap in a connection region, and welding the inner and outer end sections in the connection region by explosive welding or magnetic pulse welding. Further, a linear quench exchanger and a processing arrangement for processing a process fluid are provided.