W6Mo5Cr4V2/Q345 explosive welding composite material

Abstract

The invention discloses a novel composite material which takes W6Mo5Cr4V2 high-speed steel as a high wear-resistance, high hardness and high strength covering layer, and adopts Q345 and an explosive welding process. The unique production process comprises the following steps of: selecting researched main body explosive RB53 and denotation explosive cyclonite; overlapping three layers of explosive at a denotation point and peripheral parts, wherein the total thickness is increased by 10-15mm compared with that of other areas; and carrying out a secondary sectional annealing thermal treatment process. The composite material provided by the invention has the advantages that the covering layer has the complete advantages of the high-speed steel W6Mo5Cr4V2, and the substrate layer Q345 has a good mechanical property, so that the perfect combination of the two metal materials of different properties is realized, the property advantages of one single material is brought into full play, and particularly the composite material has wide application prospect in fields requiring cost conservation and producing knives, dies and the like of irregular structures.

Description

Technical field: [0001] The invention relates to wear-resistant, high-temperature, high-strength composite cutters and composite materials that can be used in industries such as explosive welding, machine manufacturing, and cutting tools for continuous high-temperature cutting, and can be used in the field of special processing environments (special and special-shaped cutters), belonging to tungsten and molybdenum. , chromium, vanadium alloy steel technical field. Background technique: [0002] W in high speed steel 6 Mo 5 Cr 4 V 2 High-speed steel and Q345 steel have good physical and chemical properties, but also have their own shortcomings. In order to seek new materials with comprehensive technical properties, it is proposed to use W 6 Mo 5 Cr 4 V 2 High-speed steel is used as the cladding plate, Q345 steel is used as the base plate, and the explosive welding method is used to obtain a new composite material with high temperature resistance, high strength and high...

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Problems solved by technology

[0002] W in high speed steel 6 Mo 5 Cr 4 V 2 High-speed steel and Q345 steel have good physical and chemical properties, but also have their own shortcomings. In order to seek new materials with comprehensive technical properties, it is proposed to use W 6 Mo 5 Cr 4 V 2 High-speed steel is used as the cladding plate, Q345 steel is used as the base plate, and the explosive welding method is used to obtain a new composite material with high temperature resistance, high strength and high bonding degree. However, due to the differences in physical and chemical properties between the two, the two The compounding of explosive welding is very difficult, and the key technology has not yet made a breakthrough. The composite material obtained by traditional surfacing technology and hot pressing or hot rolling technology has low bonding strength of the composite interface, high cost and high yield. Shortcomings such as low and short service life, so far, no relevant W 6 Mo 5 Cr 4 V 2 Literature reports on the successful implementation of explosive welding of high speed steel and Q345 steel

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