Recently, it was learned from the Municipal Bureau of Science and Technology that in 2009, the special fund project for the development of science and technology in Foshan City was formally launched. This year, the government's financial support will be tilted toward the four major areas of industrial aluminum industry common technology, ceramic industry common technology, energy conservation and emission reduction, and public safety science and technology support.
Foshan is a global aluminum enterprise, production capacity, talents and technology-intensive areas, with concentrated production capacity, talented personnel, advanced equipment, advanced technology, complete facilities, and cluster development. It has become a global aluminum production and processing center. Foshan has a high concentration of aluminum industry, a complete industrial chain, and strong supporting industries. It has formed a large industrial cluster with obvious industrial scale advantages and brand advantages. However, the aluminum industry in Foshan is still dominated by building profiles. The proportion of high value-added aluminum products is small, and the technical and economic indicators are not high. The gap between the overall technology and equipment level and the international advanced level is still relatively large.
At present, the development of the Guangdong aluminum industry is undergoing an important transformation period. While continuing to maintain Foshan's superior architectural aluminium profile aluminum processing industry, it is also accelerating the development of high-value-added, high-tech industrial aluminum processing to meet international financial needs. The impact of the crisis has enabled companies to change from output-based growth to quality-based efficiency, and then to technological innovations.
Based on this background, the city's science and technology department determined that this year will give the key support to overcome the "common technology of industrial aluminum industry."
It is understood that this project is based on the research and development needs of the “Aluminum Industry Technology Roadmap of Guangdong Province†to determine the “research and application of high-performance, high-precision, ultrafine microstructure aluminum alloy materials†and “development and application of infrared heating equipmentâ€. 4 major research and development topics.
Topic 101: Research and Application of High-Performance, High-precision, and Ultra-fine Microstructures of Aluminum Alloy Materials Contents: Study and design of novel micro-alloyed alloys for environmentally friendly free-machining alloys. Study of hot-working processes and heat-treatment processes has greatly improved the performance of alloy materials. Processed product rate, and replace imported products; Through high-precision molding die design and manufacturing technology, online quenching cooling control technology, profile extrusion process optimization and precision correction technology, to achieve the production of high-precision industrial profiles; research high-performance aluminum alloy heat The mechanism of coarsening and coarse-grained ring formation in the processing process is achieved through optimization of the chemical composition of the alloy, the homogenization treatment of the alloy, the graded solution treatment, and the reverse extrusion process to achieve fine grain crystallization of the alloy.
Project requirements:
(1) High-performance lead-free free-cutting 2 series aluminum alloy materials: tensile strength σb: 420 MPa, yield strength σ 0.2: 360 MPa, elongation δ: 12%; mechanical properties, cutting performance, and corrosion resistance all reach the conventional The level of lead containing alloy 2011, the product passed the EU ROHS test standards, product performance has reached the leading domestic level;
(2) Establish an extrusion production line for lead-free free-cutting 2 series aluminum alloy products for the electronics industry, which can achieve an annual production value of 20 million yuan.
(3) High-precision aluminum alloy aluminum alloy profiles: Twisting degree per unit length ≤ ± 0.2mm; tolerance accuracy range of assembly size parts ≤ 0.2mm; accuracy range of wall thickness tolerance ≤ 0.2mm; establishment of high-precision aluminum alloy profiles for the automotive industry The production line achieves an annual output value of 60 million yuan.
(4) Ultra-fine microstructure 6061 aluminum alloy material: The average grain size of the material is more than 50% more than the products produced by ordinary methods, reaching 30μm, which is at the leading domestic level; the material does not have coarse-grained ring production, solving the aluminum alloy extrusion processing The world's problems; the establishment of a 6061 aluminum alloy product line for the automotive industry, with a sales volume of 1,000 tons per year, and a production value of 35 million yuan per year.
Topic 102: Development and Industrial Application of Aluminum Extrusion Porous Mould Design Contents: The elastic deformation law under the working conditions of the porous die and the flow characteristics of the metal extrusion process, a well-designed die structure, and die hole design of the porous die, The choice of the number of die holes and the layout of the die holes are studied to ensure that the strength and rigidity of the die meet the production needs. The number of die holes should be selected to ensure that there are enough extrusion coefficients to ensure the mechanical properties of the material and that the design of the die holes avoids the appearance of profiles. Distortion of length, wave, distortion, etc., center symmetry principle for mold hole arrangement to ensure mold strength and profile quality; reasonable mold machining process line, study the influence of various parts of the mold hole on metal flow rate, adopt advanced technology Mold processing, to improve the accuracy of mold processing; the introduction of dual traction system to avoid different lengths of profiles, to ensure the smooth progress of the extrusion, while reducing the probability of mutual abrasion of the profile.
Project requirements:
1, equipped with no less than 10 sets of advanced double traction system demonstration extrusion production line;
2. The implementation unit has established a mold processing and manufacturing center, equipped with advanced complete sets of mold processing equipment, and organized a special design research team;
3. The total number of porous moulds put into use and testing shall not be less than 500 sets;
4. Establish long-term cooperation mechanism with well-known colleges and universities.
Topic 103: Development, Application and Promotion of Isothermal Rapid Extrusion Technology and Equipment Research content: Through the research and development of the closed-loop control of profile temperature and velocity in the extrusion process, a closed-loop control system for profile exit temperature-extrusion speed was established to achieve isothermal extrusion. Pressure.
Project requirements:
1. Profile outlet temperature difference: ± 10 °C; profile extrusion speed increased by more than 1 times, production costs reduced by more than 15%, extrusion energy consumption reduced to 100Kg standard coal / tons of profiles below;
2. The target product is to realize large-section high-performance aluminum profile products for transportation industry in large-scale extrusion machine production lines, establish demonstration production lines with an annual production capacity of 5,000 tons and an annual production value of ≥ 150 million yuan;
3, declare a company must have superior technology and equipment foundation.
Topic 104: Development and Application of Infrared Heating Equipment Research Content: Using infrared heat source instead of resistance wire heating to develop mold heating equipment Project requirements:
1, compared with the resistance heating furnace, saving more than 40%;
2. Shorten the heating time by more than 30%;
3, the mold temperature uniformity is good, the error range is controlled within ± 5%;
4, to avoid burning mold and generate oxide skin;
5, the establishment of mold infrared heating equipment more than four.