Manufacturing method of casting with wear resistance and corrosion resistance on surface
A manufacturing method and corrosion resistance technology, which is applied in the field of casting manufacturing, can solve problems such as long time-consuming, and achieve the effects of preventing cost increase, large alloy structure thickness, and increasing chemical composition content
Inactive Publication Date: 2015-05-13
JIAYING UNIV
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Problems solved by technology
It can be seen that the in-situ reaction of casting infiltration method can obtain dispersed carbide structure, but it needs subsequent heat treatment process to complete, which takes a long time
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0013] The composite wear-resistant material of the present invention obtains the required content of vanadium atoms and chromium atoms in the range of 10-20mm of the surface layer of a certain part on the matrix of alloy steel according to needs, and distributes a certain amount of carbonized vanadium and chromium. The performance of the alloy on the surface is better than that of the casting in terms of wear resistance and corrosion resistance. The specific production method is:
[0014] Choose stainless steel mesh, material grade 304. The diameter of the steel wire is 1.37mm, the diameter of the mesh is 7.09mm, and the stainless steel mesh is cut to the required size.
[0015] Paint preparation: artificially crush vanadium-iron blocks into 2-3mm particle size, put them into the ceramic tank of the ball mill, add ceramic balls of equal volume, start the ball mill, and process for 8 hours to make vanadium-iron powder. Mix ferrovanadium powder, water glass binder, and water i...
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Abstract
The invention discloses a manufacturing method of casting with wear resistance and corrosion resistance on the surface, and aims to provide a manufacturing method of the casting, which has the advantage of capability of obviously reducing the production cost of the casting under the condition of the same wear resistance and corrosion resistance. The technical key points are that the manufacturing method comprises the following steps of: (1) preparing vanadium iron alloy, a water glass adhesive and water into a paint according to the mass ratio of 9-11:1:1; (2) immersing a steel wire gauze in the paint prepared by the step (1); (3) placing the steel wire gauze coated with the paint in the step (2) on a wall of a casting mold, fixing the steel wire gauze to the wall of the casting mold and keeping the distance between the steel wire gauze and the wall of the casting mold at 4-6 mm; and (4) melting base metal, casting the molten base metal in the casting mold, and melting and diffusing the paint in the casting mold and the steel wire gauze under the action of high-temperature molten metal to form a plating layer containing vanadium chromium alloy, vanadium carbide and chromium carbide with thickness of 10-20 mm on the surface of the casting. The manufacturing method belongs to the technical field of manufacturing of the casting.
Description
technical field [0001] The invention relates to a method for manufacturing a casting, in particular to a method for manufacturing a casting with both wear resistance and corrosion resistance on the surface, and belongs to the technical field of casting manufacturing. Background technique [0002] The research on surface strengthening of materials by alloying treatment is divided into two categories, one is small-area tools and molds, such as salt bath metal infiltration method (TD method), and the other is casting infiltration method for large-area casting products. [0003] Sun Qikun et al. published the paper "Study on TD salt bath niobium infiltration process and coating performance" published in "Thermal Processing Technology" No. 04, 2012, pointing out that TD treatment is performed with different materials and different process parameters. The results show that: the thickness of the infiltrated layer is 4μm-10.5μm, and the niobium carbide coating with face-centered cub...
Claims
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IPC IPC(8): B22D19/14B22D19/08
Inventor 曾辉余世浩尉雪萍陈志雄
Owner JIAYING UNIV