Exactly what is Explosive Welding Plates?
Titanium Clad Copper Rod, that is, the metal composite plate produced by the explosive welding method (explosion welding method), explosive welding plate generally means the explosion from the metal composite plate. An explosive welding composite plate is a kind of composite material plate manufactured by using explosive forming technology, and its manufacturing process involves multiple steps like explosive forming, metal composite, and surface treatment.
Metal explosive welding technology is really a composite material processing technology that utilizes the huge energy generated from the instantaneous generation of explosives to instantly composite 2 or more kinds of similar or dissimilar materials together, which technology can weld alloys with various properties, particularly those which are not dissolved, into one piece.
In comparison with the direct rolling composite method:
(1) loading speed, that is, the loading process is instantaneous ;
(2) Applied to the workpiece high-pressure pulse load, loading stress is much higher than the yield strength from the metal material;
(3) The bonding area shows wave-like metallurgical bonding characteristics;
Explosive welding composite plate history
Explosive composite discovery is definitely the earliest in 1944, the American L.R. Karl (Carl) in a dynamite explosion test, accidentally found two bits of 1-inch diameter, thickness of .035 inches of thin brass discs, because of the sudden impact from the explosion and was welded together. In fact, in World War II, people in the repair of wounded tanks, but additionally often discovered that tilted impact to the tank on the shrapnel will be firmly welded to the tank armor phenomenon, just during the war individuals have no time to study it.
In 1947, the Siberian branch from the Soviet Academy of Sciences, the famous scientists M.A. Lavrentsev in the study of polymer bombs to penetrate the armor also found this phenomenon, within his dissertation formally referred to as “explosive welding”.
In the area of welding, the welding of various materials, like steel and aluminum, steel and copper, is technically very hard. And large welding depth of welding can also be very hard, if you want to use conventional welding, shielding welding as well as other welding methods will be two 40mm thick wide plate welded right into a 80mm thick wide plate, it really is estimated that no one can do. However, the explosive welding is perfect to solve the two problems simultaneously.
Explosive welding composite plate principle production method
Explosive welding is really a composite plate manufacturing method that mixes one or more materials right into a single piece using explosives as the energy source. After the explosion of explosives, the blast products form a higher-pressure pulse load, directly acting on the compound plate, promoting the top-speed movement from the compound plate, within the collision point of the compound plate and the substrate tilt collision, combined with violent plastic deformation and the formation from the jet, the jet eliminates the surface of the contamination layer, so the welded metal flat plate with a clean surface in contact with each other at high temperatures and pressures, the two kinds of plate will realize the strong metallurgical bonding.
Explosive welding composite plate-specific production methods:
1. Explosion molding
Explosion molding is the first step within the manufacture of explosive welding composite plates. Within the explosion forming process, explosives in some conditions instantly detonated, the resulting high-pressure gas will be pushed to the opposite side from the metal plate mold, so the metal plate in an instant to achieve the desired shape and size. This forming technique is characterized by high precision and efficiency.
2. Metal composite
Within the explosion molding, the need for metal composite. This task is generally utilized in explosion welding or explosion crimping as well as other methods, 2 or more metal plates through the explosion energy combined together to form a composite material. During the metal composite process, a metallurgical reaction occurs between different metals, forming a powerful metallurgical bond.
3.Surface treatment
Surface treatment is usually needed to enhance the surface quality and corrosion resistance from the explosive welding plate. Commonly used surface treatment methods include spraying, plating, chemical plating and so forth. These techniques can boost the wear resistance, corrosion resistance and aesthetics from the composite plate.
Explosive welding composite plate production process, although simple, flexible production, but the technical requirements are high, hard to accurately control, the parent material properties (toughness, impact properties, etc.), explosives properties (bursting speed stability, safety, etc.), the first parameters (the quantity of explosives per unit area, the base compound plate spacing, etc.) and the dynamic parameters (collision angle, the compound plate collision speed, etc.) from the choice and system coordination from the composite plate from the finished product yield and quality has a direct impact.
The composite interface consists of direct bonding area, melting layer and vortex. Atomic diffusion exists at the bonding interface, and severe plastic deformation with work hardening occurs in the bonding zone. The bonding surface has a wavy structure, that is helpful to the improvement of bonding strength and tensile strength.
Explosive welding plate performance
Explosive welding explosive welding plate will not alter the chemical composition and physical state from the original material, according to the actual needs from the composite material to become individually processed into the required optimal state.
Explosive welding plate application performance is superb, can withstand cold, hot processing without changing the thickness from the mixture of materials than the mixture of composite materials is very high strength, usually higher than the low side from the mixture of materials, that is unattainable by other technologies. The composite material will not delaminate or crack during subsequent heat treatment, leveling, cutting, rolling, spinning as well as other production.
For room temperature and 550 ? heat treatment of carbon steel surface layer (close to the interface layer) has serious deformation brought on by fibrous tissue and many fine particles, the center from the organization of ferrite plus pearlite; stainless steel interface for your second phase of point-like organization, the center from the needle-like organization. But by 650 ? treatment of carbon steel samples close to the interface section of small particles from the organization disappeared (that could occur decarburization), the grain becomes coarse, the center from the organization continues to be ferrite plus pearlite, but could not seen in the business from the slip line produced by deformation; as well as in the stainless steel interface there are a large number of small black particles, titanium steel composite plate may be the decarburization of chromium carbide particles formed after the advantages of the material right into a whole, giving full play to the use of different metal materials, and greatly save rare and rare materials, and the use of different metal materials. The use of performance greatly saves rare metal materials, thus lowering the production cost of equipment.
Weak demand and oversupply in Asia have pushed steelmakers in the area to build up supplies of low-carbon steel and iron, especially as the Jan. 31 reporting deadline for your European Union’s Carbon Boundary Adjustment Mechanism (CBAM) draws nearer, market participants said.
The problem is further complicated because other Western countries, namely the U.S., want to introduce similar policies.
A Singaporean trader said, “Asian steel producers have not slowed down production and want to increase output, so we expect capacity additions to outpace demand growth, especially in the post-epidemic recovery period.” . “…… Products have to go somewhere. Producers can export to Europe, but this means they have to offer low-carbon products at huge discounts.”
Asia’s path to decarbonization has seen several breakthroughs, particularly as policymakers have focused on various climate targets and dealt with public and private stakeholders to build up low-carbon technologies.
These investments have enabled steelmakers to explore commercially viable technologies and reliable causes of clean energy, namely direct decrease in iron from scrap or gas, or shifting to electric arc furnace steelmaking, that features a lower carbon intensity compared to blast furnaces.
Paolo Frediani, senior analyst at Fastmarkets, said the market is reacting to the steadily growing demand for green steel, given the quantity of pipeline investment.
“CBAM will surely provide a major boost [in creating a green steel supply chain], but despite the advanced regulating steel emissions in Europe, the green steel premium is essentially supported because increasingly more end-users are attempting to reduce their overall carbon footprint,” says Frediani. “Although this drive is stronger in certain regions than others, it really is being a global phenomenon.”
Explosive composite explosion welding advantages
Explosive composite this new process, new technology in a short period of time to obtain rapid development and wide application, the main reason is it has got the following four advantages:
(1) A variety of composite materials can be combined it can make the melting point, strength, coefficient of thermal expansion as well as other performance differences are incredibly disparate metal combinations to accomplish composite. Like aluminum – steel, titanium – steel. At present has realized the composite material combination of more than 300 kinds, that is incomparable to other methods.
(2) Excellent material properties
Composite plate from the general design principle would be to satisfy the mechanical properties from the structure from the base material, compound plate to meet the corrosion or wear resistance as well as other properties. Therefore, compared with just one metal plate, the composite plate makes full use of the best performance from the substrate, and the compound plate not only has got the required high strength but additionally has excellent corrosion resistance, wear resistance, as well as other properties of high production efficiency.
(3) High production efficiency/high bond strength.
Explosive composite in a very short period of time, and can be welded spanning a large area, an area of up to 20 square meters or more, within the composite interface, dissimilar metals through the metal bond to accomplish inter-atomic bonding is generally not under the minimum of the strength of the composite material constituting the respective parent body.
(4) Good economy
The use of explosion welding technology to produce composite plate products have both corrosion resistance from the compound layer as well as other functional characteristics and both the strength of the grass-roots level and plastic toughness indicators, it can save you precious metal resources, reduce costs.
Use of explosive welding plate
Composite materials produced by the explosive welding method continues to be commonly used in petroleum, chemical, shipbuilding, electronics, electric power, metallurgy, machinery, aerospace, atomic energy as well as other industrial fields. The composite plate is carbon steel as a substrate, single-sided or multi-faceted with precious metals as a double layer of high-efficiency energy-saving new composite materials, composite by explosion welding of special processing technology, both with the corrosion resistance of precious metals, wear resistance, but additionally with carbon steel, good weldability, molding, extensibility, thermal conductivity; explosive welding plate is currently commonly used within the petrochemical industry, metallurgy, salt production and alkali production, the water industry, Nuclear industry.
Shipbuilding
In shipbuilding, explosive welding plates may be used to manufacture hull structures, decks, bulkheads, etc. Because of its high strength and good corrosion resistance, the explosive welding plate can effectively enhance the durability and service life from the ship.
Aerospace
Within the aerospace field, explosive welding composite plates may be used to manufacture airplane fuselage, wings, engine parts, etc. Because of its good thermal stability and strength, explosive welding composite plate can enhance the performance and safety of aircraft.
Construction Industry
Within the construction industry, explosive welding composite plates may be used to manufacture structural parts for bridges, high-rise buildings, highways, and so forth. Because of its high strength and good corrosion resistance, explosive welding composite plate can enhance the safety and service life of buildings.
Automobile manufacturing
In automobile manufacturing, explosive welding composite plates may be used to manufacture body structural parts, engine parts, and so forth. Because of its lightweight, high strength, and good thermal stability, the explosive welding plate can enhance the performance and safety of automobiles.
Explosive welding plate cladding of metals supplier
Luoyang Trunnano Tech Co., Ltd has become a professional in cladding metal solutions for 10 years. It is a professional company with supply and marketing integration.
We offer different kinds of the cladding of metals, like nickel series clad plate, stainless steel series clad plate, aluminum series clad plate, copper series clad plate, refractory metal series clad plate, zirconium clad plate, niobium steel clad plate,Tantalum steel Clad Plate,Titanium Clad Copper etc.
We have a professional technical department and quality supervision department, a well-equipped laboratory with advanced testing equipment, as well as an after-sales customer service center. Send us an e-mail to [email protected] or click the needed products to send an inquiry.