Nb-V-Ti composite reinforced high-strength wear-resistant tank steel plate and production method

Abstract

The invention discloses an Nb-V-Ti composite reinforced high-strength wear-resistant tank steel plate and a production method, and belongs to the technical field of metallurgy. The steel plate comprises, by mass, 0.06% to 0.08% of C, 0.10% to 0.20% of Si, 1.75% to 1.85% of Mn, P being less than or equal to 0.018%, S being less than or equal to 0.008%, 0.060% to 0.070% of Nb, 0.015% to 0.030% of V,0.080% to 0.110% of Ti, 0.030% to 0.050% of Als and the balance Fe and inevitable impurity elements. The production method comprises procedures of vanadium extraction from vanadium-containing molteniron, semisteel smelting, LF refining, continuous casting, heating, rough rolling, finish rolling and curling. The steel plate provided in the invention has good wear resistance performance and excellent mechanical properties, weight reduction of a tank body can be realized, a transportation capacity is increased and transportation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a Nb-V-Ti composite strengthened high-strength wear-resistant tank steel plate and a production method. Background technique [0002] Wear-resistant tank steel plates are mainly used in the fields of construction machinery equipment such as powder transport tank trucks, powder transport pipelines, sand and gravel mixing tanks, etc. [0003] The tank body of the concrete mixer truck is generally welded by 4-12 mm steel plates after cold pressing. The steel plate inside the tank needs to be in constant contact with cement mortar during use, which requires the steel plate to have high strength, good wear resistance, excellent welding performance and formability. At present, most domestic automobile mixer manufacturers are still using low-alloy high-strength structural steel plates with a yield strength of 345MPa as tank materials. The steel used for mixer tanks gener...

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Problems solved by technology

However, the yield strength of its steel is only 600MPa, and due to the method of rolling and flattening, the performance difference between the same coil is generally obvious, and the internal stress is large, which is not good for cold forming during the production of the mixing tank, and because of the poor tensile and wear resistance

[0005] The document "Composite Concrete Mixer and Its Manufacturing Method Complete Vehicle and Bodywork" introduces the composite material mixing drum developed by the American oshkosh truck company to replace steel concrete mixing. It is manufactured by winding molding technology, with light weight, fewer seams, Corrosion resistance, easy maintenance, low noise, etc., but the cost of this material is high, special mold production is required, maintenance and spare parts are difficult, so it is not suitable for China's national conditions, and cannot be mass-produced

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