The utility model relates to a small radius bending forming technology for a metal composite pipe. According to the bonding strength, material properties and relative bending radius requirements of the tube layer, the small radius bending forming of the metal composite pipe can be realized by using different core mold filling processes. The relative bending radius of the metal composite bending pipe obtained by this forming technology can be controlled within 2, which has smooth surface, no wrinkling, no interface collapse and delamination, and relatively evenly-distributed wall. The overall forming quality of metal composite bending pipe is excellent.At present, it has been realized: (1) stable forming Angle is less than 150°; (2) relative bending radius (tube billet outer diameter/bending radius) is more than 1.76, at this time, the maximum cross section distortion rate of composite pipe is less than 5%, the maximum wall thickness thinning rate is < 15%, no wrinkle and delamination.Most of the results are published in SCI journals in the form of academic papers. Such as the Size effect mechanism of cross-section deformation and section hollow coefficient-bending degree of the thin-walled composite bending tube, Three-dimensional finite element modeling of rotary-draw bending of copper-titanium composite tube, etc.Scope of application: Using this optimization technology can realize small radius bending of metal composite pipe of different materials, and can be popularized to metal plastic composite bending pipe forming field.Market prospect: The metal composite bend obtained by this technology has the advantages of compact structure, excellent performance, good surface quality and high dimensional precision, which can meet the application standards in the field of aerospace and aviation. Metal composite bending pipe can integrate the performance advantages of multi-materials and save cost, obtaining broad application prospects in field of machinery, household appliances, refrigeration, petrochemical, military, etc.Type of enterprises that want to cooperate: Enterprises that are willing to engage in technical cooperation and joint research and development.The product is shown below.

In the process of storage, agricultural products and food are easy to be infected by fungi and other harmful organisms due to condensation, fever, high environmental humidity and other reasons, which not only lead to the deterioration of quality, but even produce toxins, threatening the life and health of the consumers. Therefore, it is very important to detect the pest infection in the storage process of bulk agricultural products, which is conducive to timely implementation of effective pest control measures to reduce the loss of agricultural products.In order to effectively and rapidly monitor pests in bulk agricultural products, we proposed a rapid detection method based on nano sensing atlas, and carried out detailed modeling of typical pests, which mainly solved a series of key problems such as how to obtain pests, how to achieve nano sensing, how to improve the sensing efficiency and how to analyze the sensing atlas. Through the optimization of the preparation of nano sensors and the constructed database, we have applied for 4 related patents which have been authorized. The research results have also been published in Sensors and Actuators B Chemical, Food Chemistry and other famous international journals.

1. The technological advancement of the results  Common bonding methods of heterogeneous materials include welding, powder metallurgy, solid sintering and other processing processes. These traditional manufacturing techniques have limitations in forming heterogeneous materials and it is difficult to prepare structures with complex three-dimensional shapes to meet different application requirements. Additive manufacturing has great advantages in the preparation of heterogeneous material parts. It can achieve the desired performance and structure in different parts with complex shapes by changing the transportation or laying ratio of different materials in real time. The figure shows the additive manufacturing process diagram of heterogeneous materials based on ultrasonic vibration feeding powder. However, there are many defects such as pores, cracks and poor fusion at the interface of additive manufacturing of heterogeneous materials, which become the technical bottleneck restricting its development and hindering its industrial application. Therefore, it is necessary to reduce the interface defects in additive manufacturing of heterogeneous materials to realize the controlled preparation and property control of components.  By constructing the heterogeneous interface structure, the temperature and solute distribution in the heterogeneous interface molten pool can be controlled in a directional way, thus reducing the fluidity difference caused by the difference of material properties such as melting boiling point, density and viscosity. By constructing a numerical model of multi-physical field coupling, the development law of heterogeneous material molten pool under multiple laser reflection can be revealed, the evolution process of keyhole molten pool at the heterogeneous interface can be verified, and the forming mechanism of heterogeneous material interface can be clarified. At the same time, by deeply exploring the growth and distribution law of intermetallic compounds at the interface, we can precisely control the microstructure evolution and restrain the defects, and solve the core scientific problem behind the technical bottleneck. 2. Maturity of technology  This technique has been applied to the connection of tungsten/steel heterogeneous material members. Tungsten/steel heteromaterial components have become the preferred composite structure for diverters in future nuclear fusion reactors due to their excellent anti-ionization radiation properties. At the same time, tungsten/steel heteromaterial components have also been applied in armor-piercing shells, rocket thruster nozzles, penetration weapons, die casting molds, aerospace and many other fields. By constructing heterogeneous interfacial structures, this technique can optimize the non-uniform heat/mass distribution, deformation, delamination and crack caused by thermal stress and brittle intermetallic compounds (such as Fe-W), eliminate forming defects and improve the formability of heterogeneous structures. The figure shows a shaped sample of a tungsten/steel heterocomponent.  In addition, the technology has realized the processing of copper/steel, titanium/steel, tungsten/copper, steel/ceramic and other dissimilar material components, and has realized the integrated forming of complex structures. The picture shows the copper/steel goldfish pendant and steel/ceramic double helix structure.3. The intellectual property   Relying on Jiangsu University, this technical achievement has been approved by National Natural Science Foundation and Jiangsu Province Natural Science Foundation.We have also published five SCI papers. 4. Expected benefits and types of enterprises to cooperate with  This technology is expected to realize the joint forming of dissimilar materials in complex structures, including the direct forming of metal-metal, nonmetal-nonmetallic and metal-nonmetallic material combinations. The requirements of enterprises that want to cooperate include different physical and chemical properties in different parts of a single component, such as local high temperature resistance, high thermal conductivity, chemical corrosion resistance, high wear resistance, and complex shape of the component. The types of enterprises include medical, die casting mold, aerospace, automotive and parts, agricultural machinery and engineering machinery and new material fields.

Artificial muscle technology is a new type of flexible driving technology that converts various forms of energy input into mechanical energy output. There are some problems such as low output force and low energy. This technology breaks through the technical bottlenecks of artificial muscle such as low energy output, single output form and slow response speed, and realizes high energy output and fast drive of artificial muscle.(1) Low cost (nylon 66), large stress, large strain electric heat artificial muscle and its large-scale production equipmentThe automatic twisting collection device of fiber artificial muscle with independent property rights is developed and designed. The twisting stress and spring index can be adjusted, and the continuous production length is more than 1 km, promoting the automatic production of fiber artificial muscle. With a contraction rate of up to 20 percent and a stress rate of up to 26 MPa (93 times that of human muscle), the artificial muscle can be used in flexible robotic arms. An artificial muscle stress - strain test platform with dual - mode output was built.(2) Pneumatic artificial muscles that drive both waysAiming at the problems of low response frequency and low energy efficiency of electric thermal artificial muscle, the team prepared pneumatic winding polymer artificial muscle with large shrinkage rate (40%), low driving pressure (0.15MPa) and high response frequency (5 Hz) by improving the structure of McKibben pneumatic artificial muscle. By adjusting the key preparation technology, the pneumatic winding artificial muscle with bidirectional drive can be prepared.（3）Fast response sheath-core artificial muscleBecause the fibers naturally cool down slowly, electronic thermal artificial muscles cannot be used frequently. Our team developed a sheath-core artificial muscle, using the difference in sheath-core thermal conductivity to achieve a high frequency driving strain of 13% at 8 Hz. This technology lays a foundation for the application of bionic aircraft.The team has about 5 years of research experience in fiber artificial muscle, and is committed to reducing the production cost of CNT fiber, developing new driving technology of CNT and polymer fiber artificial muscle, and developing intelligent soft robot driven by artificial muscle, etc. It has made important breakthroughs in driving principle, humanoid robot, complete set of preparation equipment, intelligent rehabilitation gloves, etc.

Wear-resistant, corrosion-resistant, heat-conductive or biological coatings are prepared on the surface of parts by means of cold spraying, induction cladding and optical thermal cladding. In cold spraying technology, there does not exist high temperature oxidation, gasification, melting, crystallization and other effects affecting the coating performance. It  can be prepared on the surface of metal, glass, ceramic workpiece to produce corrosion resistance, friction resistance, insulation, conductive and magnetic coating.The production efficiency of induction cladding is about 10 times that of laser cladding, and the cost is only 1/5. It is especially suitable for the preparation of nickel-based wear-resistant and corrosion-resistant coatings.Photohot cladding is a new coating preparation process developed by our research group, which is the first of its kind in the world. It can prepare nickel base coating, cobalt foundation coating and ceramic coating, especially suitable for surface cladding in small spaces, such as the inner wall of fine pores.Among the coating preparation methods used, cold spraying and induction cladding technologies have been applied in industrial areas and have the characteristics of low cost and high efficiency. Photohot cladding has been completed in small batch trial production.The technologies used have their own intellectual property rights.Through the coating on the surface of the parts, the cost can be saved by 50%, energy saving by 60%, material saving by 70%, and the emission of air pollutants can be reduced by more than 80%.The enterprises we hope to cooperate with include agricultural machinery and machinery manufacturers, aluminum and magnesium component R&D enterprises, mold development enterprises, pipeline valve manufacturing enterprises, target material manufacturing enterprises, etc. 

Additive manufacturing technology, especially metal additive manufacturing technology, is regarded as a subversive advanced manufacturing technology in the 21st century. At present, additive manufacturing equipment and technology are developing rapidly in our country, but the additive manufacturing materials are relatively lagging behind.The powder core wire material in this work has the advantages of both powder and solid wire, and at the same time avoids their shortcomings. It has the following outstanding characteristics.(1) It can give full play to the diversity of the marketable powders, and reasonably prepare the metal skin and elemental or alloying powders, which can easily obtain the target alloy components of additive manufacturing. Moreover, it can also add various functional powders such as rare earth powder, nano powder, wear-resistant powder, etc., breaking through the limitation of existing additive manufacturing materials and easy to form serialized products.  (2) Remarkable burn resistance; The "coating powder" with high melting point coating and its unique "gradient heat transfer effect" can inhibit the uneven burning of alloying elements in the additive manufacturing process, especially to ensure the effectiveness of trace modified elements, so as to ensure the accuracy of additive manufacturing components.(3) Strong engineering adaptability; Without the restrictions of powder sphericity and particle size on the fluidity of powder delivery and the uniformity of powder laying, the additive manufacturing components have good organizational uniformity, and the additive manufacturing process can be properly adjusted to obtain no obvious stratification, no defects and dense metal solid components. The technology maturity of this product is relatively high. It can not only directly use the production line of flux-cored welding wire that has been mass-produced, that is, strip method (which has been tested by an enterprise), but also use the round tube method in the initial stage or new product development (laboratory preparation, as shown in Figure 1). In recent years, more than 10 kinds of Fe-based, Cu-based shape memory alloys, 304 series stainless steel, wear-resistant modified 65Mn and other powder core wire materials have been prepared. The samples made by arc additive manufacturing equipment and laser additive manufacturing equipment have excellent performance and quality, and some products show new characteristics.The powder core wire has 1 authorized international invention patent (Switzerland) (low function loss shape memory alloy micro-nano powder core wire for laser additive manufacturing and its preparation method) and 4 domestic invention patents (preparation method of ternary alloy powder core wire with specific filling rate prepared by circular tube method, preparation method of powder core wire for additive manufacturing with accurate composition obtained by adjusting powder particle size, etc.).  1 invention patent is in substantive examination stage. A relatively complete core patent group has been formed and is still continuing to improve.  Limited by the difference between the experimental conditions of the school and the actual production, we hope to cooperate with enterprises specializing in additive manufacturing, welding materials or memory alloy production and research and development. The way of cooperation can be interviewed according to the specific situation of the enterprise.

Technological advancement and maturity: Our research group has been engaged in the application research of high-grade CNC gear machining equipment for a long time. At present, we can realize the development and application of large-scale high-grade CNC gear grinding machine, miter gear compound milling center, and powerful gear turning machine. And the group has developed a series of gear machine automatic control software such as large CNC forming gear grinding machine software, herringbone gear G code generation software, gear milling machine disk milling cutter grinding G code generation software, powerful gear cutting tool design software. The above several kinds of machine tools with great maturity have been applied in some enterprises.Intellectual property: 2 invention patents, 2 independently developed software copyrights, and 2 invention patents owned by relevant cooperative units.Type of enterprise we hope to cooperate with: gear machine tool design and manufacturing enterprise.

Comprehensive introduction3D surface detection of transparent materials is always considered to be a challenging problem. The difficulty is that most light, when it encounters a transparent material, passes directly through the surface and is refracted. In addition, the environmental background will affect the detection by imaging on the surface of the transparent material. The most obvious solution is to spray a powder or dye on the surface of a transparent material to make it opaque. However, there are various disadvantages such as subsequent cleaning, and the thickness and uniformity of the surface powder or dye can easily affect the detection.Key points of innovationA simultaneous detection system and method for 3D surface and thickness distribution of large area and thickness transparent material are provided. Based on the physical model of polarized light, an industrial camera is used to collect polarizing images of the surface of a transparent material with large area and thickness by means of a rotatable linear polarizer with a scale. The relationship between pixel gray value and rotation angle of linear polarizer is obtained by fitting each pixel of polarization image. A TOF depth sensor is used to determine the correspondence between refracted light and surface normals. Specifically, the unique azimuth Angle is determined and used to correct the polarization normal vector by combining gray code encoding and decoding with baseline method, so as to reconstruct the whole three-dimensional surface for detection. The thickness distribution of large area transparent material surface is also measured to realize thickness detection.Technical indexThe whole three-dimensional surface is reconstructed to realize the detection. The thickness distribution of large area transparent material surface is also measured to realize thickness detection.

Comprehensive introductionChina has become the country with the largest number of Internet users, while the number of people with physical disabilities reached 24.77 million in 2010. How to help these disabled people easily and quickly use the Internet has become an urgent problem. At present, the virtual mouse system developed at home and abroad is based on gesture recognition or eye tracker. Our team has successfully realized the virtual mouse system based on facial organs, which is more maneuverable, more comfortable and convenient. In addition, this virtual system has low cost, easy to be transplanted to modern information equipment, and can be used more widely.  Key points of innovationBy taking the face image through the camera and taking the nose tip as the spatial control point, the product tracks and analyzes the image coordinates of the control point, and provides it to the computer system as the user's input for simple control and operation, thus playing the function of a real mouse. The system has the advantages of low cost, strong universality and wide range of application. It can be used in PC terminal, multimedia teaching, game entertainment and other human-computer interaction fields. Technical indexAs a real mouse function.

Comprehensive introductionWith the increasing degree of aging in China, the number of elderly population in the future will be huge. Because of the aging body, many elderly people are difficult to take care of themselves. And children are difficult to take care of their parents anytime and anywhere, nursing homes and other places being crowded. In addition to the elderly who are unable to take care of themselves, many paralyzed and disabled people have lost the ability to take care of themselves in daily life and need extra manual care to meet their basic needs.Key points of innovationThrough this product, patients can obtain the items they need according to their wishes, and then the robot arm can be guided and controlled by the vision module to deliver the items to their mouth. It realizes human-computer interaction in a fundamental sense, and provides an intelligent and humanized autonomous nursing for the special population. And it replaces human care, saving human resources.Technical indexIt provides an intelligent and humanized autonomous nursing for the special population.