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[Technology Development Unit] Beijing Beiye Functional Materials Co., Ltd.
[Technical introduction] In order to solve the key technical problems in the localization of aircraft airborne equipment products and improve product performance, Beijing Beiye Functional Materials Co., Ltd. has undertaken the task of developing thermal bimetallic strips for hydraulic piston pump temperature compensators.
In view of the technical difficulties of using the existing temperature-sensitive bimetal strips to make the temperature compensator butterfly mat difficult to meet the temperature compensation requirements of the plunger pump, this technology is based on a comparative analysis of the composition and performance of existing hot bimetal materials, and is theoretically calculated. The alloy composition and thickness ratio of the component alloy were designed. The alloy alloy smelting and hot-cold machining process tests were conducted. The heat-bonding method, temperature compounding method and room-temperature solid-phase compounding method were used to produce three kinds of layered thermal bimetal composite materials. Thermal bimetallic strips combine strength, specific bending, temperature curvature and elastic modulus, and mastered the production technology of room temperature solid-phase composite hot bimetallic strips and thermal bimetal thermal characteristics control technology, and obtained a thickness of 1.5mm. The new type of heat-sensitive bimetallic cold-rolled strip, which has been installed by aerospace companies, can completely meet the technical requirements and have a good temperature compensation effect. At present, the material has been used in practice.
This technology is mature and stable, and can achieve batch and stable production. The annual output can reach 300 tons.
[Technical Features] There are more than ten units of domestic hot bimetals. Most manufacturers use temperature compound technology. Due to limited equipment capacity, thermal bimetals and special composite materials have a narrow range of width and thickness (width less than 110mm, thickness Not more than 1.2mm); In addition, some private enterprises using room temperature solid-phase composite production of hot bimetals based on competition considerations, the production of hot bimetallic materials is mainly for personal use, small external sales, product focus is traditional hot bimetallic materials, new materials Weak research and development capabilities. At the same time, domestic thermal double metal manufacturers do not have composite material blanks—component layer alloy production and R&D capabilities, and composite billets rely on outsourcing.
Beijing Beiye Functional Materials Co., Ltd. is the largest precision alloy manufacturer in China. It is a leading company of hot bimetallic billet-intumescent alloys and special composite material blanks-magnetic materials, special stainless steels, etc., and possesses strong material research and development capabilities. With smelting, thermal processing, cold processing and metal composite, physical and chemical testing and analysis of complete production lines. Product quality and new product R&D capabilities have been recognized by customers in Europe, America and Taiwan.
With this technology, it is possible to produce thermal double-metal strip products with thickness×width=0.1-2.0×100-300mm. The thickness and width of the materials are at the leading domestic level.
Technical Specifications
Material specifications (thickness x width): 0.1 to 2.0 x 100 to 300 mm.
Material properties: ratio bending 13.8±5%×10 -6 /°C, temperature curvature 24.0±5%×10 -6 /°C, resistivity 80±5%μΩ·cm, material should be combined firmly, repeated bending test, port No cracking may occur. The temperature range of the material used is -50 to 200°C.
[technical level] leading domestic
ã€Applicable area and scope】 The new type of thermal double metal can be widely used in the fields of aviation, aerospace, low-voltage electrical appliances, etc. to produce thermostats, temperature compensator components, etc., and has broad application prospects.
[technical state] mass production, mature application stage
ã€Cooperation mode】Cooperative development
[Input demand] 3 million yuan
[Conversion cycle] 1 to 2 years
[Expected benefits] The annual demand for hot bimetallic strips in the low-voltage electrical appliance market exceeds 5,000 tons, with an output value of nearly 500 million yuan. The new type of thermal double metal strip developed by this technology can be used not only for the production of thermostat components in the low-voltage electrical field, but also for the production of hydraulic pump temperature compensator components in aviation, aerospace and other fields. The annual demand is tens of tons, and the output value is over 3,000. Ten thousand yuan. The new type of thermal double metal strip can provide strong material support for the national economy and national defense industry. The promotion of this technology can not only achieve great economic benefits, but also has good social benefits.