A method for manufacturing a hollow insulation riser with a partition

Abstract

The invention relates to a production method of a hollow heat preserving feeder head with a separation plate. The method comprises the following steps: (1) producing a work layer material; (2) producing a heat-preserving layer material; (3) molding the feeder head; and (4) drying. Compared with the prior art, the production method has the beneficial effects (1) the working layer and the heat preserving layer are made of different raw materials, the working layer is resistant to washout of high-temperature liquid steel and resistant to erosion, and the heat preserving layer has a cold retardant and heat preserving effect; the strength of the working layer and the strength of the heat preserving layer are higher under the same thickness, and the high temperature resistance is better; (2) the heat conduction efficiency can be remarkably reduced by adopting the separation plate, and the heat preserving performance of the side wall of the heat preserving feeder head can be greatly improved; (3) multiple layers of independent and completely-closed hollow chambers are produced by adopting a mold and a solid gasification module, so that the sealing performance and completeness are good, and the heat insulation, heat preserving and high temperature resisting performance requirements of the feeder head can be met; (4) parts on two sides of the separation plate are respectively provided with a lengthened structure, so that the displacement in the compounding process can be prevented, and the separation plate is more firmly connected with a composite heat insulation layer; (5) the process flow is simple, and the operation is easy.

Description

technical field [0001] The invention relates to the technical field of special steel casting, in particular to a method for manufacturing a hollow insulation riser with a partition. Background technique [0002] The riser made of low thermal conductivity material is called thermal insulation riser. Compared with ordinary risers, the metal liquid in the thermal insulation riser has a longer solidification time and better feeding effect. At the same time, the thermal insulation riser has the advantages of good thermal insulation performance, high refractoriness, small shrinkage of reburning line, convenient use, no environmental pollution, and easy promotion. , Widely used in the production of various grades of cast steel, cast iron and non-ferrous alloy castings. [0003] The invention relates to a manufacturing method of a hollow thermal riser with partitions, which is a new type of riser device, which is composed of a composite heat insulation layer, a hollow air chamber a...

AI Technical Summary

Problems solved by technology

[0004] Because of the particularity of the structure of the hollow thermal insulation riser with partitions, the production of the hollow thermal insulation riser is different from the traditional riser consisting of a single refractory material, and there are certain difficulties in the production process.

Images