Cu/Mo/Cu laminated metal coiled strip and continuous machining method

Abstract

The invention discloses a Cu/Mo/Cu laminated metal coiled strip and a continuous machining method. The method comprises the steps of surface cleaning, hot-rolling compositing, semi-finished product surface cleaning, semi-finished product rolling, continuous bright annealing, finished product rolling, finishing and striping. The length of the finished Cu/Mo/Cu laminated metal coiled strip manufactured by the adoption of the method can reach dozens of meters and even hundreds of meters, production efficiency can be improved, production cost can be lowered, uniformity of product quality is ensured, and the Cu/Mo/Cu laminated metal coiled strip is suitable for large-scale continuous production and has high production and application value.

Description

technical field [0001] The patent of the invention relates to the field of processing layered metal coils and strips, in particular to a CMC layered metal coils and strips with high thermal conductivity and low expansion coefficient and a continuous processing method. Background technique [0002] Cu / Mo / Cu(CMC) layered metal is a new type of electronic packaging material with high thermal conductivity and low expansion coefficient. It has excellent thermal conductivity and adjustable thermal expansion coefficient. It is the first choice for electronic packaging of high-power electronic components at home and abroad. Materials and heat sink heat dissipation materials are widely used in microwave, communication, radio frequency, aerospace, power electronics, high-power semiconductor lasers, medical and other industries. For example, the internationally popular BGA package uses this material as a substrate in large quantities. In addition, in the field of microwave packaging a...

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Problems solved by technology

[0005] Commonly used preparation methods include welding compounding, electroplating compounding, explosive compounding, etc., such as the publication numbers CN1843691A and CN1850436A, and the public dates are October 11, 2006 and October 25, 2006. The plate-shaped copper-clad plate-shaped molybdenum is joined to form a compound Plates cannot be produced continuously, and need to undergo repeated annealing and rolling, the process is cumbersome, non-continuous large-scale production, low production efficiency, and difficult to control quality consistency

[0006] The invention patent of Zhu Yubin et al. "Preparation method of a copper-molybdenum-copper layered composite material", publication number CN102527747.A, cleans the surface of the copper plate and the molybdenum plate, cuts them into the same size, alternately superimposes and loads the pressing blocks, and stacks them Push it into the hydrogen furnace and keep it warm for (60-100) minutes to complete the three-metal diffusion bonding. The production efficiency is low and it is not suitable for large-scale production

[0007] The invention patent of Wang Zhifa and others "Manufacturing method of copper-molybdenum-copper three-layer composite board", such as publication number: CN1408485, adopts the principle of solid-liquid combination of melting and casting, places electrolytic copper plates on both sides of molybdenum ingots, and heats the copper plates to melt and molybdenum plates Solid-liquid combination of the billet, followed by hot rolling, annealing, and rolling to the finished product. The combination process is complicated, and the thickness ratio control of the molybdenum layer and the copper layer is limited, which cannot meet the product quality requirements

[0008] The invention patent of Wang Dezhi et al. "Preparation method of high bonding strength and high precision copper-molybdenum-copper laminated composite material", application number: 201210433614. Composite plates are thinned by cold rolling. Because molybdenum is easy to oxidize, the bonding strength of this process is not easy to control, and the product is only layered metal sheets, which leads to low production efficiency.

[0009] Zhang Jiayu and others invented the patent "A Preparation Method of Copper-Molybdenum-Copper Layered Composite Metal Material", patent number: CN102371719A, the method of obtaining a composite board through two explosive composites is relatively complicated, the production process is dangerous, and the cost is high. Suitable for large-scale production

[0010] U.S. patents (US4950554, US4988392, US4957823) use welding and rolling methods to prepare copper-molybdenum-copper materials, which have high requirements for welding equipment, are difficult to realize, and are prone to local welding defects, and the preparation cost is also high.

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