Production process of rare earth alloy wear-resistant pipe

Rare earth alloy wear-resistant pipes are produced by a horizontal centrifugal casting process. Rare earth alloy wear-resistant pipe is produced by horizontal centrifugal casting, in which the smelted liquid metal is passed through the pouring riser and diverted into the rotating mold barrel (the speed of the mold barrel is generally 800-1000 rpm), under the action of centrifugal force A casting method for filling and solidifying into a casting. The horizontal centrifugal casting machine is used for casting various tubular castings and various carbon steel, alloy steel pipes and double-layer steel rolls that require different compositions of inner and outer layers.

Horizontal centrifugal casting

Characteristics

Liquid metal can form a hollow cylindrical free surface in a mold without a core. In the production process, the casting process is greatly simplified, with high productivity and low cost

Under the action of centrifugal force, the metal liquid improves the ability of metal to fill the mold, so some alloys and thin-walled castings with poor fluidity can be produced by centrifugal casting;

Due to the centrifugal force, casting defects are improved, shrinkage holes (shrinkage porosity), pores, inclusions and other defects are reduced, and the mechanical properties are improved;

Because centrifugal casting has no riser runway, etc., the utilization rate of metal is improved.

Rare earth wear-resistant alloy pipe material has strong anti-wear performance, so when choosing rare earth alloy wear-resistant pipe, higher wear resistance is required, how to improve it?

Material
after years of production, research and development in our factory, rare earth alloy wear-resistant pipes have a series of formulas, and different material series can be selected according to the requirements of wear resistance. In addition, when some elements such as fev, fenb, and cu are properly added, the metallographic structure of the material will change, the grains will be finer, the strength will be higher, the plasticity will be stronger, and the metal matrix will be further passivated, so that the original material is resistant to resistance. The abrasiveness is improved again, thereby increasing the service life of the rare earth alloy wear-resistant pipe.

Structurally
the thickness of the scouring surface of the pipeline can be increased or the guide block can be increased, so that the increased thickness or guide block can be worn first when the medium flows through, thereby improving the overall service life of the rare earth alloy wear-resistant pipeline.

Craftsmanship
in the casting process, heat treatment mainly changes the hardness of rare earth alloy wear-resistant pipes. Appropriate heat treatment can effectively improve the performance of pipe fittings, change the hardness of pipe fittings, and make them more wear-resistant.